阅读说明：本技术 一种环境光确定方法、装置、终端设备及介质 (Ambient light determination method, ambient light determination device, terminal equipment and medium ) 是由 虢礼 于 2020-05-29 设计创作，主要内容包括：本公开是关于一种环境光确定方法、装置、终端设备及介质,其中,应用于包括全面屏的终端设备,在终端设备的显示屏下设置有至少一个第一感应单元和至少一个第二感应单元,显示屏具有第一偏光部,第二感应单元与显示屏之间设置有第二偏光部,方法包括如下步骤：获取第二偏光部对第一感应单元和第二感应单元的影响因素信息；光源包括屏幕光和环境光时,获取第一感应单元的第一感光信息和第二感应单元的第二感光信息；根据第一感光信息、第二感光信息和所述影响因素信息,确定环境光信息。使用本公开中的方法确定具有全面屏的终端设备的环境光时,能够得到准确、可靠的环境光照度信息,进而根据环境光照度信息进行后续控制。(The disclosure relates to an ambient light determination method, an ambient light determination device, a terminal device and a medium, wherein the ambient light determination method is applied to the terminal device comprising a full-screen, at least one first sensing unit and at least one second sensing unit are arranged below a display screen of the terminal device, the display screen is provided with a first polarized part, and a second polarized part is arranged between the second sensing unit and the display screen, and the method comprises the following steps: acquiring influence factor information of the second polarizing part on the first sensing unit and the second sensing unit; when the light source comprises screen light and ambient light, acquiring first photosensitive information of the first sensing unit and second photosensitive information of the second sensing unit; and determining the ambient light information according to the first photosensitive information, the second photosensitive information and the influence factor information. When the method disclosed by the disclosure is used for determining the ambient light of the terminal equipment with the full screen, accurate and reliable ambient light illumination information can be obtained, and then follow-up control is carried out according to the ambient light illumination information.)

1. An ambient light determination method is applied to a terminal device comprising a full-screen, and is characterized in that at least one first sensing unit and at least one second sensing unit are arranged below a display screen of the terminal device, the display screen is provided with a first polarization part, a second polarization part is arranged between the second sensing unit and the display screen, and a predetermined included angle is formed between the transmission direction of the first polarization part and the transmission direction of the second polarization part, and the method comprises the following steps:

acquiring influence factor information of the second polarizing part on the first sensing unit and the second sensing unit;

when the light source comprises screen light and ambient light, acquiring first photosensitive information of the first sensing unit and second photosensitive information of the second sensing unit;

and determining ambient light information according to the first photosensitive information, the second photosensitive information and the influence factor information.

2. The ambient light determination method according to claim 1, wherein the acquiring of the information on the influence factors of the second polarizer on the first and second sensing units comprises:

when the light source is a screen light with a first preset illumination, first influence information of the second light bias part on the first sensing unit and the second sensing unit is obtained;

when the light source is the ambient light with the second preset illumination, second influence information of the second light bias part on the first sensing unit and the second sensing unit is obtained.

3. The ambient light determination method according to claim 2, wherein determining ambient light information based on the first exposure information, the second exposure information, and the influencing factor information comprises:

and determining the ambient light information according to the first photosensitive information, the second photosensitive information, the first influence information and the second influence information.

4. The ambient light determination method according to claim 1, wherein the first sensing unit includes a preset number of first sensing channels, the second sensing unit includes a preset number of second sensing channels, the first sensing channels are disposed corresponding to the second sensing channels, the corresponding first sensing channels and the corresponding second sensing channels form sensing channel groups, each sensing channel group corresponds to a preset photosensitive parameter, and the influencing factor information includes a preset number of preset photosensitive parameters.

5. The ambient light determination method of claim 4, wherein obtaining first exposure information of a first sensing unit and second exposure information of a second sensing unit when the light source comprises screen light and ambient light comprises:

acquiring first channel information of each first induction channel of the first induction units;

and acquiring second channel information of each second sensing channel of the second sensing unit.

6. The ambient light determination method according to claim 5, wherein determining ambient light information based on the first exposure information, the second exposure information, and the influencing factor information comprises:

determining an environment photoelectric signal of each first sensing channel of the first sensing units according to each first channel information of the first sensing units, each second channel information of the second sensing units and preset photosensitive parameters corresponding to the first channel information and the second channel information;

and obtaining ambient light information according to the ambient photoelectric signal of each first sensing channel of the first sensing unit.

7. The utility model provides an ambient light's confirming device, is applied to the terminal equipment including the whole screen, its characterized in that is provided with at least one first response unit and at least one second response unit under terminal equipment's display screen, the display screen has first partial light of polarization, the second response unit with be provided with second partial light of polarization between the display screen, the direction of the penetrating vibration of first partial light and the direction of the penetrating vibration of second partial light have predetermined contained angle, the device includes:

the first acquisition module is used for acquiring influence factor information of the second polarizing part on the first sensing unit and the second sensing unit;

the second acquisition module is used for acquiring first photosensitive information of the first sensing unit and second photosensitive information of the second sensing unit when the light source comprises screen light and ambient light;

and the determining module is used for determining the ambient light information according to the first photosensitive information, the second photosensitive information and the influence factor information.

8. The apparatus for determining ambient light according to claim 7, wherein the first obtaining module is specifically configured to:

when the light source is a screen light with a first preset illumination, first influence information of the second light bias part on the first sensing unit and the second sensing unit is obtained;

when the light source is the ambient light with the second preset illumination, second influence information of the second light bias part on the first sensing unit and the second sensing unit is obtained.

9. The apparatus for determining ambient light according to claim 8, wherein the determining module is specifically configured to: and determining the ambient light information according to the first photosensitive information, the second photosensitive information, the first influence information and the second influence information.

10. The apparatus according to claim 7, wherein the first sensing unit includes a predetermined number of first sensing channels, the second sensing unit includes a predetermined number of second sensing channels, the first sensing channels are disposed corresponding to the second sensing channels, the corresponding first sensing channels and the corresponding second sensing channels form sensing channel groups, each sensing channel group corresponds to a predetermined photosensitive parameter, and the influencing factor information includes a predetermined number of predetermined photosensitive parameters.

11. The apparatus for determining ambient light according to claim 10, wherein the second obtaining module is specifically configured to: acquiring first channel information of each first induction channel of the first induction units; and acquiring second channel information of each second sensing channel of the second sensing unit.

12. The apparatus for determining ambient light according to claim 11, wherein the determining module is specifically configured to: determining an environment photoelectric signal of each first sensing channel of the first sensing units according to each first channel information of the first sensing units, each second channel information of the second sensing units and preset photosensitive parameters corresponding to the first channel information and the second channel information; and obtaining ambient light information according to the ambient photoelectric signal of each first sensing channel of the first sensing unit.

13. A terminal device, comprising:

a processor;

a memory for storing executable instructions of the processor;

wherein the processor is configured to perform the ambient light determination method of any of claims 1 to 6.

14. A non-transitory computer-readable storage medium, wherein instructions in the storage medium, when executed by a processor of a terminal device, enable the terminal device to perform the ambient light determination method of any of claims 1 to 6.

Technical Field

The present disclosure relates to the field of terminals, and in particular, to a method and an apparatus for determining ambient light, a terminal device, and a medium.

Background

With the progress of technology, the screen occupation ratio of terminal equipment such as mobile phones and the like is higher and higher. As screen occupation becomes an important selling point of mobile phones, full-screen mobile phones gradually become the mainstream of future mobile phone markets.

In order to achieve a real one hundred percent screen ratio and obtain a better screen display effect, the problem that a photosensitive device under a screen is easily interfered by screen light must be solved, so as to obtain stable and accurate ambient light parameters.

Disclosure of Invention

To overcome the problems in the related art, the present disclosure provides an ambient light determination method, apparatus, terminal device, and medium.

According to a first aspect of the embodiments of the present disclosure, there is provided an ambient light determination method applied to a terminal device including a full-screen, where at least one first sensing unit and at least one second sensing unit are disposed below a display screen of the terminal device, the display screen has a first polarization portion, a second polarization portion is disposed between the second sensing unit and the display screen, and a predetermined included angle is formed between a transmission direction of the first polarization portion and a transmission direction of the second polarization portion, the method includes:

acquiring influence factor information of the second polarizing part on the first sensing unit and the second sensing unit;

when the light source comprises screen light and ambient light, acquiring first photosensitive information of the first sensing unit and second photosensitive information of the second sensing unit;

and determining ambient light information according to the first photosensitive information, the second photosensitive information and the influence factor information.

Optionally, the acquiring information of the influence factors of the second polarizer on the first sensing unit and the second sensing unit includes:

when the light source is a screen light with a first preset illumination, first influence information of the second light bias part on the first sensing unit and the second sensing unit is obtained;

when the light source is the ambient light with the second preset illumination, second influence information of the second light bias part on the first sensing unit and the second sensing unit is obtained.

Optionally, the determining ambient light information according to the first exposure information, the second exposure information, and the influence factor information includes:

and determining the ambient light information according to the first photosensitive information, the second photosensitive information, the first influence information and the second influence information.

Optionally, the first sensing unit includes a preset number of first sensing channels, the second sensing unit includes a preset number of second sensing channels, the first sensing channels correspond to the second sensing channels, the corresponding first sensing channels and the second sensing channels form sensing channel groups, each sensing channel group corresponds to a preset photosensitive parameter, and the influencing factor information includes a preset number of preset photosensitive parameters.

Optionally, when the light source includes screen light and ambient light, acquiring first photosensitive information of the first sensing unit and second photosensitive information of the second sensing unit includes:

acquiring first channel information of each first induction channel of the first induction units;

and acquiring second channel information of each second sensing channel of the second sensing unit.

Optionally, the determining ambient light information according to the first exposure information, the second exposure information, and the influence factor information includes:

determining an environment photoelectric signal of each first sensing channel of the first sensing units according to each first channel information of the first sensing units, each second channel information of the second sensing units and preset photosensitive parameters corresponding to the first channel information and the second channel information;

and obtaining ambient light information according to the ambient photoelectric signal of each first sensing channel of the first sensing unit.

According to a second aspect of the embodiments of the present disclosure, there is provided an ambient light determination apparatus applied to a terminal device including a full-screen, at least one first sensing unit and at least one second sensing unit are disposed below a display screen of the terminal device, the display screen has a first polarization portion, a second polarization portion is disposed between the second sensing unit and the display screen, and a predetermined included angle is formed between a transmission direction of the first polarization portion and a transmission direction of the second polarization portion, the apparatus includes:

the first acquisition module is used for acquiring influence factor information of the second polarizing part on the first sensing unit and the second sensing unit;

the second acquisition module is used for acquiring first photosensitive information of the first sensing unit and second photosensitive information of the second sensing unit when the light source comprises screen light and ambient light;

and the determining module is used for determining the ambient light information according to the first photosensitive information, the second photosensitive information and the influence factor information.

Optionally, the first obtaining module is specifically configured to:

when the light source is a screen light with a first preset illumination, first influence information of the second light bias part on the first sensing unit and the second sensing unit is obtained;

when the light source is the ambient light with the second preset illumination, second influence information of the second light bias part on the first sensing unit and the second sensing unit is obtained.

Optionally, the determining module is specifically configured to: and determining the ambient light information according to the first photosensitive information, the second photosensitive information, the first influence information and the second influence information.

Optionally, the first sensing unit includes a preset number of first sensing channels, the second sensing unit includes a preset number of second sensing channels, the first sensing channels correspond to the second sensing channels, the corresponding first sensing channels and the second sensing channels form sensing channel groups, each sensing channel group corresponds to a preset photosensitive parameter, and the influencing factor information includes a preset number of preset photosensitive parameters.

Optionally, the second obtaining module is specifically configured to: acquiring first channel information of each first induction channel of the first induction units; and acquiring second channel information of each second sensing channel of the second sensing unit.

Optionally, the determining module is specifically configured to: determining an environment photoelectric signal of each first sensing channel of the first sensing units according to each first channel information of the first sensing units, each second channel information of the second sensing units and preset photosensitive parameters corresponding to the first channel information and the second channel information; and obtaining ambient light information according to the ambient photoelectric signal of each first sensing channel of the first sensing unit.

According to a third aspect of the embodiments of the present disclosure, there is provided a terminal device, including:

a processor;

a memory for storing executable instructions of the processor;

wherein the processor is configured to perform any of the above described ambient light determination methods.

According to a fourth aspect of embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, wherein instructions, when executed by a processor of a terminal device, enable the terminal device to perform any one of the above-described ambient light determination methods.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: when the method disclosed by the invention is used for determining the ambient light of the terminal equipment with the full screen, the influence of the screen light on the photosensitive element can be accurately obtained, accurate and reliable ambient illuminance information is obtained, and then follow-up control is carried out according to the ambient illuminance information, so that the control reliability and stability are improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a display screen setup diagram of a terminal device having a full screen shown in the related art.

Fig. 2 is a schematic diagram of an application scenario of the ambient light determination method in the present disclosure.

Fig. 3 is a schematic diagram of the working principle of the polarization part in the application scenario in the present disclosure.

Fig. 4 is another schematic diagram of the working principle of the polarization part in the application scenario in the present disclosure.

Fig. 5 is a flow chart illustrating an ambient light determination method according to an example embodiment.

Fig. 6 is a flow chart illustrating an ambient light determination method according to another exemplary embodiment.

Fig. 7 is a flowchart illustrating an ambient light determination method according to another exemplary embodiment.

Fig. 8 is a flowchart illustrating an ambient light determination method according to another exemplary embodiment.

Fig. 9 is a block diagram illustrating an ambient light determination device according to an example embodiment.

Fig. 10 is a block diagram illustrating a terminal device according to an example embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

In the related art, in order to ensure the screen occupation ratio of the terminal device, a light sensing element such as a light sensor is usually disposed below the screen, and the terminal device can adjust the automatic backlight of the screen, the brightness of the screen, or the display of a keyboard lamp according to the ambient light detected by the light sensing element. However, the photosensitive element disposed under the screen is affected by the screen light emission, thereby affecting the sensing of the ambient light by the photosensitive element.

In the related art, in a low light section (which refers to a case where the illumination intensity is low), a PWM (pulse width modulation, 240Hz) driving mode is used for screen display, and when the photosensitive element operates in the low light section, sampling may be performed at Blanking Time (Blanking Time) displayed on the screen, and an integrated value corresponding to the ambient illumination is obtained through ADC (analog-to-digital converter) integration, so as to obtain the illumination information of the ambient light. However, in the high light section (indicating the case of high illumination intensity), the screen display adopts a DC driving (current driving) mode, the screen is refreshed at a frequency of 60Hz, there is no Blanking Time, and the values obtained by sampling and integrating the light sensing elements all include two parts, namely, ambient light and screen light, wherein the low light section and the high light section can be two light intensity ranges set by the user according to the illumination environment in which the terminal device operates.

In the high light section, because the light information obtained by the light sensing element in the related art contains the ambient light and the screen light at the same time, the size of the screen light cannot be directly known, and the ambient light information in the screen light cannot be accurately known, so that the terminal equipment cannot accurately perform screen display adjustment according to the ambient light.

In order to prevent the problem of screen reflection when a user uses the OLED panel, as shown in fig. 1, a first polarizer 1 'is disposed on the uppermost layer (in the direction of fig. 1) of the OLED panel, and an Encap glass 2', an organic self-luminescent layer 3 ', and a TFT glass substrate 4' are disposed below the first polarizer. The natural light in the external environment enters the screen below after passing through the first light deflecting part 1' of the OLED screen.

In the related art, the thickness of the organic layer of the screen from the light-emitting layer 3' is large, so that the transmittance of blue-band light from the layer is low. The poor luminousness of screen can influence the regulation that the screen shows and the luminous efficacy of screen, still can influence the shooting effect of the leading camera of full screen. For example, when the light transmittance of the display screen is low, the camera under the screen cannot obtain enough natural light; secondly, the display screen emits light, which causes the photographing effect of the camera under the screen to be whitish and unclear.

For the problem of low light transmittance of the display screen, the related art display can be solved by increasing the light transmittance of the screen and increasing the size and the light sensing amount of the light sensing element. Although the above measures can increase the transmittance of the screen to a certain extent, the screen light and the ambient light information still cannot be accurately known. If the transmittance of the screen is not good, the screen light is also attenuated by the screen, so that the difficulty of predicting the screen light is higher (for example, the amplitude of 60Hz is difficult to predict), the light information obtained by the photosensitive element contains the ambient light and the screen light, the screen light prediction difficulty is increased, the ambient light detected by the photosensitive element is difficult to obtain finally, and the terminal device cannot provide data reference for screen display adjustment according to the data of the photosensitive element.

In the related technology, the influence of screen light on the photosensitive element is eliminated by using an algorithm, if the used algorithm is simple, the robustness and the calculation efficiency of the algorithm are poor, and the influence of light emitted by an OLED display screen on the photosensitive element cannot be effectively eliminated; if the algorithm used is too complex, the processing speed of the handset will be reduced. This requires an algorithm for eliminating the influence of screen light, which is required to have better robustness and obtain better effect, and at the same time, the algorithm is not too complex.

The main method for eliminating the influence of screen light on the photosensitive element is as follows: and determining the illumination value of the natural light through an algorithm according to the detection result of the photosensitive element, and using the illumination value for display of a display screen or shooting of a camera under the screen. However, due to the hardware structure of the photosensitive element itself, when different contents are displayed on the display screen of the terminal device, the response of the photosensitive element to different colors of light displayed on the display screen is different. This causes that when the content displayed on the display screen is changed continuously, the data detected by the photosensitive element will fluctuate, which affects the accuracy of the illuminance value of the finally output ambient light, and further affects the display adjustment of the display screen or the effect of the image shot by the camera under the screen.

In order to solve the above problems, the present disclosure provides an ambient light determining method, which can accurately obtain the influence of screen light on a photosensitive element, obtain accurate and reliable ambient illuminance information, and further perform subsequent control according to the ambient illuminance information, thereby improving control reliability and stability.

For convenience of description of the ambient light determination method in the present disclosure, an application scenario of the ambient light determination method in the present disclosure is first described.

As shown in fig. 2, at least one first sensing unit 11 and at least one second sensing unit 12 are disposed under a display screen of a terminal device in the present disclosure. The first sensing unit 11 and the second sensing unit 12 may be, for example, light sensors; the display screen 2 may be, for example, an OLED screen, the display screen 2 comprising a first polarizer 21 and an organic self-emissive layer 22. The first polarizer 21 is located above the organic self-luminescent layer 22 in a state where the screen of the terminal device is facing upward and is in a flat state. The first sensing cell 11 and the second sensing cell 12 are disposed below the organic self-emissive layer 22. The first sensing unit 11 and the second sensing unit 12 are in the same environment, and the light received by the two sensing units is the same.

Still referring to fig. 2, a second polarization part 13 is disposed between the second sensing unit 12 and the display screen 2, and the second polarization part 13 is disposed upstream of the second sensing unit 12 along the light incident direction of the second sensing unit 12, that is, the second polarization part 13 is disposed above the second sensing unit 12, referring to fig. 2. The transmission direction of the first light polarization part 21 and the transmission direction of the second light polarization part 13 form a predetermined angle therebetween.

The first sensing unit 11 receives the screen light of the display screen 2 and the incident first polarized ambient light transmitted through the first polarizing part 21, and the second sensing unit 12 receives the screen light of the display screen 2 and the incident second polarized ambient light transmitted through the first polarizing part 21 and the second polarizing part 13. The first polarizer 21 may be a first polarizer, the second polarizer 13 may be a second polarizer, and the transmission direction of the first polarizer and the transmission direction of the second polarizer form a predetermined angle. The predetermined angle is not specifically limited in this embodiment, and is set to enable the second photosensitive element 12 to receive no natural light and only screen light under certain conditions; alternatively, the second sensing unit 12 receives only a small amount of natural light and receives the entire screen light. The angle of the preset included angle can be selected according to the actual situation in the implementation process, and the shooting effect of the camera 1 is not affected.

The operation principle of the first and second polarizing portions 21 and 13 will be described below.

Referring to fig. 3, a polarizer P is provided, the polarization direction of the polarizer P is inclined, natural light passes through the polarizer P and then propagates in the inclined direction until reaching the quarter-wave plate, and the quarter-wave plate can convert linearly polarized light polarized by the polarizer into circularly polarized light or elliptically polarized light.

Further referring to fig. 4, a polarizer P and a polarizer Q are disposed, and the polarization directions of the two polarizers have a predetermined angle. The first beam of light, the second beam of light and the third beam of light are the same natural light, the transmission vibration direction of the polaroid P is along the vertical direction through the polaroid P, the first beam of light is changed into the first vertical polarized light with the vibration direction along the vertical direction, and the light can be received on the background plate M and is bright. Second bundle of light passes through polaroid P and polaroid Q, wherein, polaroid P and polaroid Q's the direction of penetrating vibration is vertical direction, and second bundle of light becomes the first vertical polarized light of vibration direction along vertical direction after passing through polaroid P, because polaroid Q's the direction of penetrating vibration is the same with the vibration direction of first vertical polarized light, consequently, first vertical polarized light becomes the vertical polarized light of second after polaroid Q, still can receive light on the background board M, is bright. Third beam light passes through polaroid P and polaroid Q, wherein, polaroid P is vertical direction, polaroid Q is in horizontal state, its direction of penetrating vibration is horizontal direction, third beam light becomes the first vertical polarized light of vibration direction along vertical direction after passing through polaroid P, because polaroid Q's the direction of penetrating vibration is horizontal, only the light wave of vibrating along horizontal direction can the printing opacity polaroid Q propagate, and vertical vibration is followed to first vertical polarized light, can't see through polaroid Q, therefore, first vertical polarized light is all filtered after passing through polaroid Q, can't receive light on the background board M, background board M is dark.

Still referring to fig. 4, if the first polarizer 21 is a polarizer P and the second polarizer 13 is a polarizer Q, when an angle is formed between the transmission direction of the first polarizer 21 and the transmission direction of the second polarizer 13, and the ambient light in the environment passes through the first polarizer 21 and the second polarizer 13 in sequence, ideally, only a small amount of ambient light can be received by the second sensing unit 12. Then, in the present embodiment, the first sensing unit 11 receives the screen light of the display screen 2 and the incident first polarized ambient light transmitted through the first polarizing part 21, the second sensing unit 12 receives the screen light of the display screen 2 and the incident second polarized ambient light transmitted through the first polarizing part 21 and the second polarizing part 13, and the second polarized ambient light is negligible because the light is very little, and therefore, it can be considered that almost all the light received by the second photosensitive element 12 is the screen light.

The ambient light determination method in the present disclosure is explained below with specific examples.

In one exemplary embodiment, the ambient light determination method in the present embodiment is applied to a terminal device having a full screen. As shown in fig. 2, in one example, a first sensing unit 11 and a second sensing unit 12 are disposed under a display screen 2 of a terminal device, the display screen 2 has a first polarization portion 21, a second polarization portion 13 is disposed between the second sensing unit 12 and the display screen 2, and a transmission direction of the first polarization portion 21 and a transmission direction of the second polarization portion 13 have a predetermined angle therebetween. As shown in fig. 5, the method in this embodiment specifically includes the following steps:

and S110, acquiring influence factor information of the second polarizing part on the first sensing unit and the second sensing unit.

In step S110, the obtaining of the influencing factor information may be implemented under different conditions, for example, the first sensing unit and the second sensing unit are single-channel light sensors, or the first sensing unit and the second sensing unit are multi-channel light sensors, and under different conditions, the obtaining of the influencing factor information is implemented in different manners, which may be specifically described in the following embodiments.

S120, when the light source comprises screen light and ambient light, first photosensitive information of the first sensing unit and second photosensitive information of the second sensing unit are obtained.

In step S120, after the light source is polarized in different degrees, the light sources received by the first sensing unit and the second sensing unit both include screen light and ambient light, and the light sources include both screen light and ambient light as detection environments, and at this time, the first photosensitive information obtained by the first sensing unit and the second photosensitive information obtained by the second sensing unit may be used as references for further calculating the ambient light illuminance value.

And S130, determining the ambient light information according to the first photosensitive information, the second photosensitive information and the influence factor information.

In step S130, according to the light transmission characteristics of the first and second light polarizing portions, the ambient light and the screen light obtained by the first and second sensing units are different, the ambient light information can be accurately determined according to the first photosensitive information, the second photosensitive information, and the influence factor information, and after the accurate ambient light information is obtained, the terminal device can adjust screen display or screen camera shooting according to the detected ambient light information.

In another example, two or three first sensing units and two or three second sensing units may be further disposed under the display screen of the terminal device, and in the application process, the first photosensitive information includes an average value of data measured by each first sensing unit, and the second photosensitive information includes an average value of data measured by each second sensing unit.

In another exemplary embodiment, as shown in fig. 6, when the first sensing unit and the second sensing unit are both single-channel sensors, the method for determining the ambient light specifically includes the following steps:

s210, when the light source is the screen light with the first preset illumination, first influence information of the second light bias part on the first sensing unit and the second sensing unit is obtained.

And S220, when the light source is the ambient light with the second preset illumination, acquiring second influence information of the second light bias part on the first sensing unit and the second sensing unit.

And S230, when the light source comprises screen light and ambient light, acquiring first photosensitive information of the first sensing unit and second photosensitive information of the second sensing unit.

S240, determining the ambient light information according to the first photosensitive information, the second photosensitive information, the first influence information and the second influence information. The influence factor information in this embodiment includes first influence information and second influence information.

In this embodiment, the first sensing unit and the second sensing unit are both single-channel sensors (or only the case where two light sensing units are single-channel is considered), and the ambient light information is calculated in this case. It should be noted that, in an ideal situation, as shown in fig. 2, due to the arrangement of the first polarization part 21 and the second polarization part 13, it can be considered that the ambient light is filtered out at the second sensing unit 12 and only the screen light is received, and the first sensing unit 11 includes two parts of the ambient light and the screen light, so that the ambient light illumination information is equal to the subtraction of the first photosensitive information of the first sensing unit 11 and the second photosensitive information of the second sensing unit 12. However, in practical situations, the light reaching the second sensing unit 12 may not completely filter the ambient light, for example, some infrared light passes through, so the following manner may be adopted in the process of calculating the ambient light information in the embodiment:

assume that when the light source includes screen light and ambient light:

the first sensitization information satisfies: s₁＝a₁*A+b₁*L；

The second sensitization information satisfies: s₂＝a₂*A+b₂*L；

Wherein S is₁For data (or readings), S, collected by the first sensing unit₂Data (or readings) collected for the second sensing unit; a is₁、b₁、a₂And b₂Different weight values; a is the ambient light illumination value and L is the screen illumination value.

Then processing the above equation yields:

S₁b₂＝a₁*Ab₂+b₁*Lb₂ ①

S₂b₁＝a₂*Ab₁+b₂*Lb₁ ②

obtaining the following components:

S₁b₂-S₂b₁＝a₁*Ab₂+b₁*Lb₂-(a₂*Ab₁+b₂*Lb₁)＝(a₁b₂-a₂b₁)A

let b be₁＝nb₂(n is a constant), then

Then, in step S210, when the light source is a screen light with a first preset illuminance, for example, the screen is turned on to a preset brightness, and the screen is placed in a dark room, where the illuminance value a of the ambient light is 0, and n is S₂’/S₁', wherein S₁’、S₂' are data collected by the first sensing unit 11 and data collected by the second sensing unit 12 at this time, respectively. At this time, n is regarded as first influence information of the second polarization part 13 on the first sensing unit 11 and the second sensing unit 12;

in step S220, when the light source is ambient light with a second preset illumination, for example, the screen is turned off and set at illumination a₁Under the ambient light, when L is equal to 0, the data S collected by the first sensing unit is obtained₁And data S collected by the second sensing unit₂”：S₁”＝a₁*A₁，S₂”＝a₂*A₁Can find a₁And a₂. At this time, the second influence information of the second polarizer 13 on the first and second sensing units 11 and 12 includes a₁And a₂。

After the first and second influence information are determined, in step S230, the light source includes a screen light and an ambient light, and the current first photosensitive information S of the first sensing unit 11 at this time can be obtained₁And the current second sensing information S of the second sensing unit 12₂。

In step S240, according to the first photosensitive information S₁Second photosensitive information S₂First influence information n and second influence information a₁And a₂Then, according to the formula:

accurately calculating illuminance information of ambient light when the light source includes screen light and ambient light.

In another exemplary embodiment, the first sensing unit and the second sensing unit are both multi-channel sensors, for example, the first sensing unit includes a preset number of first sensing channels, the second sensing unit includes a preset number of second sensing channels, the first sensing channels and the second sensing channels are arranged correspondingly, the corresponding first sensing channels and the corresponding second sensing channels form a sensing channel group, each sensing channel group corresponds to a preset photosensitive parameter, and the influencing factor information includes a preset number of preset photosensitive parameters.

As shown in fig. 7, the method for determining ambient light in this embodiment specifically includes the following steps:

and S310, acquiring influence factor information of the second polarizing part on the first sensing unit and the second sensing unit.

S320, acquiring first channel information of each first sensing channel of the first sensing unit.

S330, second channel information of each second sensing channel of the second sensing unit is obtained.

S340, determining an environment photoelectric signal of each first sensing channel of the first sensing unit according to each first channel information of the first sensing unit, each second channel information of the second sensing unit and preset photosensitive parameters corresponding to the first channel information and the second channel information.

And S350, obtaining ambient light information according to the ambient photoelectric signal of each first sensing channel of the first sensing unit.

In step S310, the first sensing unit includes two first sensing channels a1 and a2, the second sensing unit also includes two sensing units B1 and B2, and the corresponding arrangement of the first sensing unit 11 and the second sensing unit 12 means that the number of sensing channels of the first sensing unit 11 and the second sensing unit 12 is equal. The first photosensitive channel A1 and the second photosensitive channel B1 form a first photosensitive channel group, and the first photosensitive channel A2 and the second photosensitive channel B2 form a second photosensitive channel group. Of course, it is understood that only the first photosensitive element and the second photosensitive element having two photosensitive channels are shown in this example, and besides, the first photosensitive element and the second photosensitive element may also have four photosensitive channels respectively, or five photosensitive channels respectively, as long as the number of photosensitive channels of the first photosensitive element and the second photosensitive element is ensured to be equal.

When the screen is under the preset condition, a preset photosensitive parameter can be determined according to the ambient light channel value (the first channel information under the condition) corresponding to the first photosensitive channel a1 and the ambient light channel value (the second channel information under the condition) corresponding to the second sensing unit B1, and similarly, a2 and B2 also correspond to a preset photosensitive parameter, and the influencing factor information in the embodiment includes two preset photosensitive parameters.

In step S320, the first channel information is an ambient light channel value under the detection environment, and an ambient light channel value corresponding to a1 and an ambient light channel value corresponding to a2 in the first sensing unit 11 are obtained.

In step S330, the second channel information is an ambient light channel value under the detection environment, and the ambient light channel value corresponding to B1 and the ambient light channel value corresponding to B2 in the second sensing unit 12 are obtained.

In step S340, an ambient photoelectric signal of each first sensing channel of the first sensing unit under the detection environment, such as the ambient photoelectric signal C of the first sensing channel a1 of the first sensing unit, can be determined according to each first channel information of the first sensing unit, each second channel information of the corresponding second sensing unit, and the preset photosensitive parameter determined by the corresponding first channel information and the corresponding second channel information_iSatisfies the following conditions:

C_i＝C₁-C₂*K

wherein, C₁For detecting the first channel information (channel value), C of the first photosensitive channel A1 of the first sensing unit under the environment₂Second channel information of a second light sensing passing B1 of a second sensing unit under the detection environment;

k is an ambient light channel value (first channel information) C corresponding to the first photosensitive channel a1 under a preset condition (e.g., a preset color is displayed on a screen in a dark room)_A1An ambient light channel value (second channel information) C corresponding to the second sensing unit B1_B1Definable preset photosensitive parameterNumber:

similarly, the environmental photoelectric signal C of the first sensing channel a2 of the first sensing unit can be obtained according to the above formula_ii。

In step S350, the ambient photoelectric signal C of the first sensing channel a1 of the first sensing unit is obtained_iAnd the environmental photoelectric signal C of the first sensing channel A2 of the first sensing unit_iiMixing C with_iAnd C_iiThe fitting can obtain the ambient light information, the ambient light information obtained at this time is the illuminance value information (light signal) of the ambient light of the first sensing unit, and the adjustment of the screen display and the adjustment of the under-screen image pickup effect can be realized according to the illuminance value information. The way of fitting the channel values to the illumination values lux may be matrix operation or linear operation.

In another exemplary embodiment, as shown in fig. 8, the present embodiment defines a detailed description for implementing step S340 in the above embodiment. In this embodiment, the method for determining the preset photosensitive parameters corresponding to the first channel information and the second channel information includes:

and S410, controlling the display screen to respectively display a plurality of monochromatic lights under the condition of no ambient light.

In this step, in order to guarantee the accuracy of the predetermined sensitization parameter that determines, can place sensitization device's first induction element and second induction element under the dark surrounds, for example can place terminal equipment in the darkroom, with the received ambient light of light sensing element that reduces as far as, under ideal circumstances, the received external ambient light of light sensing element is zero, that is, light sensing element can only receive the display screen, can not receive the influence of external ambient light, in order to guarantee to reflect the influence of the illumination value of the detection out of the multiple monochromatic light that shows respectively in the display screen to light sensing element accurately.

The monochromatic light can be four monochromatic lights of red, green, blue and white, and the four monochromatic lights and the black screen state are display modes commonly used by those skilled in the art when determining the display effect of the screen. However, in the black screen state, the light receiving device cannot receive the light of the content displayed on the display screen, and therefore, in the present embodiment, the black screen state is discarded.

And S420, under each monochromatic light, respectively acquiring a first channel value (first channel information) of a first photosensitive channel and a second channel value (second channel information) of a second photosensitive channel in each photosensitive channel group.

In step S410, the monochromatic light includes four colors, i.e., red, green, blue, and white. Taking the first sensing unit and the second sensing unit with two channels as an example, the present embodiment includes two photosensitive channel groups, a first photosensitive channel group is formed by the first photosensitive channel a1 and the second photosensitive channel B1, and a second photosensitive channel group is formed by the first photosensitive channel a2 and the second photosensitive channel B2. In this step, a first channel value a1 of the first photosensitive channel a1 is acquired, a second channel value B1 of the second photosensitive channel B1 is acquired, and a first channel value a2 of the first photosensitive channel a2 is acquired, and a second channel value B2 of the second photosensitive channel B2 is acquired. Then, for each color, one sensing device includes two photosensitive channel groups, and each photosensitive channel group includes two channel values, so that a total of 4 channel values are obtained for each color. Then under four monochromatic lights, a total of 16 channel values are obtained.

And S430, determining preset photosensitive parameters of each group of photosensitive channels under each monochromatic light according to the first channel value and the second channel value corresponding to each group of photosensitive channels under each monochromatic light.

In this step, under each monochromatic light, the ratio of the first channel value to the second channel value corresponding to each group of photosensitive channel groups is used as the preset photosensitive parameter of the group of photosensitive channels under the monochromatic light.

In one example, the first channel value of the first photosensitive element in the first set of photosensitive channel groups is Q under red light_r1The second channel value of the second photosensitive element is P_r1The first channel value of the first photosensitive element in the second photosensitive channel group is Q_r2Of a second photosensitive elementThe second channel value is P_r2. Because the first photosensitive element can receive all red light and the second photosensitive element can only receive polarized red light in a darkroom environment, the preset photosensitive parameter of the first photosensitive channel group under the red light is K_r1＝Q_r1/P_r1The preset photosensitive parameter of the second photosensitive channel group under red light is K_r2＝Q_r2/P_r2。

Similarly, under the green light, the preset photosensitive parameter of the first photosensitive channel group is calculated to be K_g1＝Q_g1/P_g1The preset photosensitive parameter of the second photosensitive channel group is K_g2＝Q_g2/P_g2. Under blue light, calculating the preset photosensitive parameter of the first photosensitive channel group to be K_b1＝Q_b1/P_b1The preset photosensitive parameter of the second photosensitive channel group is K_b2＝Q_b2/P_b2. Under the condition of white light, calculating the preset photosensitive parameter of the first photosensitive channel group to be K_w1＝Q_w1/P_w1The preset photosensitive parameter of the second photosensitive channel group is K_w2＝Q_w2/P_w2。

In one example, for each set of photosensitive channel groups, the preset photosensitive parameters may include preset photosensitive parameters for multiple colors, and in the detection environment (including both the ambient light and the corresponding color screen light), when calculating the channel value of the first set of photosensitive channel groups (which may be understood as the channel value corresponding to the first photosensitive channel a1 of the first sensing unit), the preset photosensitive parameters for multiple colors may be averaged (as K) according to C_i＝C₁-C₂K calculates the channel values of the first set of photosensitive channel groups.

In another example, in the detection environment (including both the ambient light and the screen light of the corresponding color), the channel value of the first set of photosensitive channel sets (which can be understood as the channel value corresponding to the first photosensitive channel a1 of the first sensing unit) is calculated, according to the preset photosensitive parameter of each color, according to C_i＝C₁-C₂K, channel values of a first set of photosensitive channel groups under four colors are obtained by calculation:

C_r1＝C₁-C₂*K_r1

C_g1＝C₁-C₂*K_g1

C_b1＝C₁-C₂*K_b1

C_w1＝C₁-C₂*K_w1

similarly, when calculating the channel value of the second set of photosensitive channels (which can be understood as the channel value corresponding to the first photosensitive channel a2 of the first sensing unit), according to the preset photosensitive parameter for each color, according to C_i＝C₁-C₂And calculating to obtain channel values of four second photosensitive channel groups:

C_r2＝C₁-C₂*K_r2

C_g2＝C₁-C₂*K_g2

C_b2＝C₁-C₂*K_b2

C_w2＝C₁-C₂*K_w2

from the above, it can be determined that the channel values of the two first sensing channels (a1 and a2) of the first sensing unit under the same monochromatic light correspond to the channel values under the monochromatic light (e.g. C under red light)_r1And C_r2) The fit determines a sensed illumination value for one of the photosensitive devices. The fitting mode can adopt a method of calculating Lux by matrix operation or linear operation. By analogy, an illumination value can be fitted for each color. It is worth emphasizing that C in the above calculation formula₁、C₂The values are not necessarily the same, but represent the channel values measured by the two sensing elements under the corresponding detection environment.

In this embodiment, when the first sensing unit and the second sensing unit are both multi-channel sensors, after obtaining the ambient light information (current ambient light illuminance value) according to the ambient photoelectric signal (channel value) of each first sensing channel of the first sensing unit, the illuminance value output by the photosensitive element may be updated and optimized, for example:

acquiring a reference ambient light illumination value, where the reference ambient light illumination value is a first average value of N consecutive ambient light illumination values adjacent to the current ambient light illumination value, where N may be 16, 10, 20, or the like, and may be set according to actual conditions in the implementation process. And when N is 10, the first average value of 10 continuous ambient light illumination values which are adjacent to the current ambient light illumination value and are forward along the time axis. For example, the current ambient illuminance value is M, the nth ambient illuminance value that is adjacent to the current ambient illuminance value and is output before the current ambient illuminance value is 10 th, then the nth-1 ambient illuminance value that is output is 9 th, and so on, the nth-9 ambient illuminance value that is output is 1 st, the 10 ambient illuminance values that are output before the current ambient illuminance value are summed and then averaged to obtain a first average value, which is the reference ambient illuminance value.

For example, before the current ambient light illuminance value is output, 10 times of ambient light illuminance values, which are Y1, Y2, Y3, Y4, Y5, Y6, Y7, Y8, Y9, and Y10, respectively, are output, and then the first average value is obtained by summing up Y1, Y2, Y3, Y4, Y5, Y6, Y7, Y8, Y9, and Y10, and the first average value is the reference ambient light illuminance value.

A second average of N-1 ambient light illumination values adjacent to the current ambient light illumination value is determined from the current ambient light illumination value. Referring to the above example when the first average value is determined, when the second average value is determined, the current ring light illuminance value and the 10 th to 2 nd continuous ambient light illuminance values that have been output before the current ambient light illuminance value on the time axis are summed, and the second average value is obtained after further averaging calculation.

For example, before the current ambient light illuminance value is output, 10 times of ambient light illuminance values, which are Y1, Y2, Y3, Y4, Y5, Y6, Y7, Y8, Y9, and Y10, respectively, are output, and the output current ambient light illuminance value is Y11, when a second average value is calculated, the sum of Y2, Y3, Y4, Y5, Y6, Y7, Y8, Y9, Y10, and Y11 is calculated, and the average value is the second average value, that is, the reference ambient light illuminance value used when the current ambient light illuminance value is determined next time.

The second average value is directly substituted for the first average value to be used as a reference ambient light illumination value for the next time of determining the current ambient light illumination value, where it is to be noted that, after the current ambient light illumination value, when ambient light in the environment where the terminal device is located changes, the current ambient light illumination value needs to be determined again. That is, the reference ambient light illumination value needs to be determined again each time the current ambient light illumination value is output, so that the reference ambient light illumination value can be used as a reference when the current ambient light illumination value is determined again. The illumination value of the ambient light applied to the terminal equipment control process is guaranteed to be more stable and accurate, and the control stability and reliability of the terminal equipment are guaranteed.

In another exemplary embodiment, the present embodiment discloses an ambient light determination apparatus for implementing the above-described ambient light determination method. As shown in fig. 9, the ambient light determination device in the present embodiment includes: a first obtaining module 100, a second obtaining module 200, and a determining module 300, the apparatus in this embodiment is used to implement the ambient light determining method shown in fig. 5. In an implementation process, the first obtaining module 100 in this embodiment is configured to obtain influence factor information of the second polarizer on the first sensing unit and the second sensing unit. The second obtaining module 200 is configured to obtain first photosensitive information of the first sensing unit and second photosensitive information of the second sensing unit when the light source includes the screen light and the ambient light. A determining module 300, configured to determine ambient light information according to the first exposure information, the second exposure information, and the influence factor information.

In another exemplary embodiment, still referring to fig. 9, the ambient light determination apparatus in this embodiment includes a first acquisition module 100, a second acquisition module 200, and a determination module 300, and the apparatus in this embodiment is used to implement the method shown in fig. 6. In an implementation process, the first obtaining module in this embodiment is specifically configured to:

when the light source is a screen light with a first preset illumination, first influence information of the second light bias part on the first sensing unit and the second sensing unit is obtained;

when the light source is the ambient light with the second preset illumination, second influence information of the second light bias part on the first sensing unit and the second sensing unit is obtained.

In another exemplary embodiment, still referring to fig. 9, the ambient light determination apparatus in this embodiment includes a first acquisition module 100, a second acquisition module 200, and a determination module 300, and the apparatus in this embodiment is used to implement the method shown in fig. 6. In an implementation process, the determining module in this embodiment is specifically configured to: and determining the ambient light information according to the first photosensitive information, the second photosensitive information, the first influence information and the second influence information.

In another exemplary embodiment, still referring to fig. 9, the ambient light determination apparatus in this embodiment includes a first acquisition module 100, a second acquisition module 200, and a determination module 300, and the apparatus in this embodiment is used to implement the method shown in fig. 7. The second obtaining module is specifically configured to:

acquiring first channel information of each first induction channel of the first induction units; and acquiring second channel information of each second sensing channel of the second sensing unit.

In this embodiment, the first sensing unit includes the first sensing channel of presetting quantity, and the second sensing unit includes the second sensing channel of presetting quantity, first sensing channel with the second sensing channel corresponds, and corresponding first sensing channel and second sensing channel form the sensing channel group, and every sensing channel group of group corresponds a preset sensitization parameter, and the influence factor information includes that the quantity of presetting is photosensitive parameter.

In another exemplary embodiment, still referring to fig. 9, the ambient light determination apparatus in this embodiment includes a first acquisition module 100, a second acquisition module 200, and a determination module 300, and the apparatus in this embodiment is used to implement the method shown in fig. 7. Wherein the determining module is specifically configured to: determining an environment photoelectric signal of each first sensing channel of the first sensing unit according to each first channel information of the first sensing unit, each second channel information of the second sensing unit and preset photosensitive parameters corresponding to the first channel information and the second channel information; and obtaining ambient light information according to the ambient photoelectric signal of each first sensing channel of the first sensing unit.

As shown in fig. 10, it is a block diagram of a terminal device. The present disclosure also provides for a terminal device, for example, device 500 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.

Device 500 may include one or more of the following components: a processing component 502, a memory 504, a power component 506, a multimedia component 508, an audio component 510, an input/output (I/O) interface 512, a sensor component 514, and a communication component 516.

The processing component 502 generally controls overall operation of the device 500, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 502 may include one or more processors 520 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 502 can include one or more modules that facilitate interaction between the processing component 502 and other components. For example, the processing component 502 can include a multimedia module to facilitate interaction between the multimedia component 508 and the processing component 502.

The memory 504 is configured to store various types of data to support operation at the device 500. Examples of such data include instructions for any application or method operating on device 500, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 504 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

Power component 506 provides power to the various components of device 500. The power components 506 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the apparatus 500.

The multimedia component 508 includes a screen that provides an output interface between the device 500 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 508 includes a front facing camera and/or a rear facing camera. The front-facing camera and/or the rear-facing camera may receive external multimedia data when the device 500 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 510 is configured to output and/or input audio signals. For example, the audio component 510 includes a Microphone (MIC) configured to receive external audio signals when the device 500 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 504 or transmitted via the communication component 516. In some embodiments, audio component 510 further includes a speaker for outputting audio signals.

The I/O interface 512 provides an interface between the processing component 502 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor assembly 514 includes one or more sensors for providing various aspects of status assessment for the device 500. For example, the sensor assembly 514 may detect an open/closed state of the device 500, the relative positioning of the components, such as a display and keypad of the device 500, the sensor assembly 514 may also detect a change in the position of the device 500 or a component of the device 500, the presence or absence of user contact with the device 500, orientation or acceleration/deceleration of the device 500, and a change in the temperature of the apparatus 500. The sensor assembly 514 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 514 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 514 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 516 is configured to facilitate communications between the device 500 and other devices in a wired or wireless manner. The device 500 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 516 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 516 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the apparatus 500 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

A non-transitory computer readable storage medium, such as the memory 504 including instructions executable by the processor 520 of the device 500 to perform the method, is provided in another exemplary embodiment of the present disclosure. For example, the computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like. The instructions in the storage medium, when executed by a processor of the terminal device, enable the terminal device to perform the above-described method.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.