阅读说明：本技术 图像数据传输方法、图像显示方法、芯片及穿戴设备 (Image data transmission method, image display method, chip and wearable device ) 是由 董梦 杨文刚 于 2020-06-23 设计创作，主要内容包括：本申请公开了一种图像数据传输方法,应用于主板的处理芯片,所述主板还包括主板NFC芯片,主板NFC芯片用于与屏幕装置传输数据,图像数据传输方法包括：若接收到目标屏幕装置连接至主板时产生的中断信号,则通过主板NFC芯片向目标屏幕装置发送参数获取指令；通过主板NFC芯片接收目标屏幕装置返回的屏幕参数,并根据屏幕参数确定目标分辨率；通过主板NFC芯片向目标屏幕装置发送目标分辨率的图像数据,以便目标屏幕装置显示目标分辨率的画面。本申请能够避免更换屏幕后画面显示质量下降。本申请还公开了一种图像显示方法、一种主板的处理芯片、一种目标屏幕装置的屏幕IC芯片及一种穿戴设备,具有以上有益效果。(The application discloses image data transmission method is applied to a processing chip of a mainboard, the mainboard further comprises a mainboard NFC chip, the mainboard NFC chip is used for transmitting data with a screen device, and the image data transmission method comprises the following steps: if an interrupt signal generated when the target screen device is connected to the mainboard is received, sending a parameter acquisition instruction to the target screen device through the NFC chip of the mainboard; receiving screen parameters returned by the target screen device through the NFC chip of the mainboard, and determining target resolution according to the screen parameters; and sending the image data of the target resolution to the target screen device through the NFC chip of the mainboard so that the target screen device can display the picture of the target resolution. According to the method and the device, the image display quality can be prevented from being reduced after the screen is replaced. The application also discloses an image display method, a processing chip of the mainboard, a screen IC chip of the target screen device and a wearable device, which have the beneficial effects.)

1. An image data transmission method is characterized in that the method is applied to a processing chip of a mainboard, the mainboard further comprises a mainboard NFC chip, the mainboard NFC chip is used for transmitting data with a screen device, and the image data transmission method comprises the following steps:

if an interrupt signal generated when a target screen device is connected to the mainboard is received, sending a parameter acquisition instruction to the target screen device through the mainboard NFC chip;

receiving screen parameters returned by the target screen device through the mainboard NFC chip, and determining a target resolution according to the screen parameters;

and sending the image data of the target resolution to the target screen device through the mainboard NFC chip so that the target screen device can display the picture of the target resolution.

2. The image data transmission method according to claim 1, further comprising, after transmitting the image data of the target resolution to the target screen device via the motherboard NFC chip:

judging whether response information returned by the target screen device is received within preset time;

if so, sending the next frame of image data of the target resolution to the target screen device through the mainboard NFC chip;

and if not, repeatedly sending the current frame image data of the target resolution to the target screen device through the mainboard NFC chip.

3. The image data transmission method according to claim 2, wherein, in repeatedly transmitting the current frame image data of the target resolution to the target screen device via the motherboard NFC chip, the method further comprises:

recording the sending times of repeatedly sending the current frame image data with the target resolution;

and if the sending times are greater than the preset times, generating screen abnormity prompt information.

4. The image data transmission method according to claim 1, wherein the screen parameter is extended display identification data of the target screen device;

correspondingly, the determining the target resolution according to the screen parameter comprises:

determining the screen model of the target screen device according to the extended display identification data, and inquiring the target resolution of the target screen device according to the screen model.

5. The image data transmission method according to claim 1, further comprising:

and if an interrupt signal generated when the target screen device is disconnected from the mainboard is received, stopping the operation of sending the image data of the target resolution to the target screen device through the mainboard NFC chip.

6. An image display method is applied to a screen IC chip of a target screen device, the target screen device further comprises a screen NFC chip, the screen NFC chip is used for transmitting data with a mainboard, and the image display method comprises the following steps:

if a parameter acquisition instruction sent by a mainboard is received, sending screen parameters to the mainboard through the screen NFC chip; the parameter obtaining instruction is an instruction sent by a processing chip of the mainboard after receiving an interrupt signal generated when the target screen device is connected to the mainboard;

receiving image data sent by the mainboard through the screen NFC chip; wherein the resolution of the image data is determined according to the screen parameter;

displaying a picture of the image data on the target screen device.

7. The utility model provides a processing chip of mainboard, its characterized in that, the mainboard still includes mainboard NFC chip, mainboard NFC chip is used for transmitting data with the screen device, the processing chip of mainboard includes:

the parameter acquisition module is used for sending a parameter acquisition instruction to the target screen device through the mainboard NFC chip if an interrupt signal generated when the target screen device is connected to the mainboard is received;

the resolution determination module is used for receiving the screen parameters returned by the target screen device through the mainboard NFC chip and determining the target resolution according to the screen parameters;

and the data transmission module is used for sending the image data of the target resolution to the target screen device through the mainboard NFC chip so that the target screen device can display the picture of the target resolution.

8. A screen IC chip of a target screen device, the target screen device further comprising a screen NFC chip, the screen NFC chip being configured to communicate data with a motherboard, the screen IC chip of the target screen device comprising:

the parameter sending module is used for sending the screen parameters to the mainboard through the screen NFC chip if a parameter obtaining instruction sent by the mainboard is received; the parameter obtaining instruction is an instruction sent by a processing chip of the mainboard after receiving an interrupt signal generated when the target screen device is connected to the mainboard;

the receipt receiving module is used for receiving the image data sent by the mainboard through the screen NFC chip; wherein the resolution of the image data is determined according to the screen parameter;

and the display module is used for displaying the picture of the image data on the target screen device.

9. The wearable device is characterized by comprising a mainboard and a target screen device, wherein the mainboard comprises a processing chip and a mainboard NFC chip, and the target screen device comprises a screen IC chip and a screen NFC chip;

the process of transmitting the image data to the target screen device by the mainboard for displaying comprises the following steps:

if the processing chip receives an interrupt signal generated when a target screen device is connected to the mainboard, sending a parameter acquisition instruction to the screen NFC chip through the mainboard NFC chip;

the screen NFC chip analyzes the parameter acquisition instruction and transmits a data acquisition request to the screen IC chip;

the screen IC chip transmits a data packet corresponding to the data acquisition request to the screen NFC chip;

the screen NFC chip analyzes the data packet to obtain screen parameters, and transmits the screen parameters to the processing chip through the mainboard NFC chip;

the processing chip determines a target resolution according to the screen parameters and sends image data of the target resolution to the mainboard NFC chip;

and the mainboard NFC chip transmits the image data of the target resolution to the screen NFC chip so that the screen NFC chip transmits the image data of the target resolution to the screen IC chip for display.

10. The wearable device of claim 9, wherein the target screen assembly and the motherboard are coupled via magnetically attractive contacts.

Technical Field

The application relates to the technical field of intelligent wearable equipment, in particular to an image data transmission method, an image display method, a processing chip of a mainboard, a screen IC chip of a target screen device and wearable equipment.

Background

Along with the development of the technology, the functions of electronic equipment such as a mobile phone, a tablet personal computer and an intelligent bracelet are gradually enriched, and a user can realize more convenient human-computer interaction and information acquisition based on the electronic equipment.

In electronic devices, users mainly acquire and input information through a screen device. Due to the material of the screen, the situation of screen fragmentation of the electronic device often occurs, after the screen is replaced, the main chip of the electronic device still outputs the picture of the original resolution to the screen, and if the resolution of the replaced screen is not consistent with that of the original screen, the situation of display blurring will occur.

Therefore, how to avoid the degradation of the display quality of the picture after the screen is replaced is a technical problem that needs to be solved by those skilled in the art.

Disclosure of Invention

The present application aims to provide an image data transmission method, an image display method, a processing chip of a main board, a screen IC chip of a target screen device, and a wearable device, which can prevent the image display quality from being degraded after the screen is replaced.

In order to solve the above technical problem, the present application provides an image data transmission method, which is applied to a processing chip of a motherboard, where the motherboard further includes a motherboard NFC chip, and the motherboard NFC chip is used to transmit data with a screen device, and the image data transmission method includes:

if an interrupt signal generated when a target screen device is connected to the mainboard is received, sending a parameter acquisition instruction to the target screen device through the mainboard NFC chip;

receiving screen parameters returned by the target screen device through the mainboard NFC chip, and determining a target resolution according to the screen parameters;

and sending the image data of the target resolution to the target screen device through the mainboard NFC chip so that the target screen device can display the picture of the target resolution.

Optionally, after the sending the image data of the target resolution to the target screen device by the motherboard NFC chip, the method further includes:

judging whether response information returned by the target screen device is received within preset time;

if so, sending the next frame of image data of the target resolution to the target screen device through the mainboard NFC chip;

and if not, repeatedly sending the current frame image data of the target resolution to the target screen device through the mainboard NFC chip.

Optionally, in the process of repeatedly sending the current frame image data of the target resolution to the target screen device through the motherboard NFC chip, the method further includes:

recording the sending times of repeatedly sending the current frame image data with the target resolution;

and if the sending times are greater than the preset times, generating screen abnormity prompt information.

Optionally, the screen parameter is extended display identification data of the target screen device;

correspondingly, the determining the target resolution according to the screen parameter comprises:

determining the screen model of the target screen device according to the extended display identification data, and inquiring the target resolution of the target screen device according to the screen model.

Optionally, the method further includes:

and if an interrupt signal generated when the target screen device is disconnected from the mainboard is received, stopping the operation of sending the image data of the target resolution to the target screen device through the mainboard NFC chip.

Optionally, the target screen device and the main board are connected through a magnetic attraction contact.

The application also provides an image display method, which is applied to a screen IC chip of a target screen device, the target screen device further comprises a screen NFC chip, the screen NFC chip is used for transmitting data with a mainboard, and the image display method comprises the following steps:

if a parameter acquisition instruction sent by a mainboard is received, sending screen parameters to the mainboard through the screen NFC chip; the parameter obtaining instruction is an instruction sent by a processing chip of the mainboard after receiving an interrupt signal generated when the target screen device is connected to the mainboard;

receiving image data sent by the mainboard through the screen NFC chip; wherein the resolution of the image data is determined according to the screen parameter;

displaying a picture of the image data on the target screen device.

The application also provides a processing chip of mainboard, the mainboard still includes mainboard NFC chip, mainboard NFC chip be used for with screen device transmission data, the processing chip of mainboard includes:

the parameter acquisition module is used for sending a parameter acquisition instruction to the target screen device through the mainboard NFC chip if an interrupt signal generated when the target screen device is connected to the mainboard is received;

the resolution determination module is used for receiving the screen parameters returned by the target screen device through the mainboard NFC chip and determining the target resolution according to the screen parameters;

and the data transmission module is used for sending the image data of the target resolution to the target screen device through the mainboard NFC chip so that the target screen device can display the picture of the target resolution.

The application also provides a screen IC chip of target screen device, target screen device still includes screen NFC chip, screen NFC chip is used for with mainboard transmission data, the screen IC chip of target screen device includes:

the parameter sending module is used for sending the screen parameters to the mainboard through the screen NFC chip if a parameter obtaining instruction sent by the mainboard is received; the parameter obtaining instruction is an instruction sent by a processing chip of the mainboard after receiving an interrupt signal generated when the target screen device is connected to the mainboard;

the receipt receiving module is used for receiving the image data sent by the mainboard through the screen NFC chip; wherein the resolution of the image data is determined according to the screen parameter;

and the display module is used for displaying the picture of the image data on the target screen device.

The application also provides wearable equipment, which comprises a mainboard and a target screen device, wherein the mainboard comprises a processing chip and a mainboard NFC chip, and the target screen device comprises a screen IC chip and a screen NFC chip;

the process of transmitting the image data to the target screen device by the mainboard for displaying comprises the following steps:

if the processing chip receives an interrupt signal generated when a target screen device is connected to the mainboard, sending a parameter acquisition instruction to the screen NFC chip through the mainboard NFC chip;

the screen NFC chip analyzes the parameter acquisition instruction and transmits a data acquisition request to the screen IC chip;

the screen IC chip transmits a data packet corresponding to the data acquisition request to the screen NFC chip;

the screen NFC chip analyzes the data packet to obtain screen parameters, and transmits the screen parameters to the processing chip through the mainboard NFC chip;

the processing chip determines a target resolution according to the screen parameters and sends image data of the target resolution to the mainboard NFC chip;

and the mainboard NFC chip transmits the image data of the target resolution to the screen NFC chip so that the screen NFC chip transmits the image data of the target resolution to the screen IC chip for display.

Optionally, the target screen device and the main board are connected through a magnetic attraction contact.

The application provides an image data transmission method, which is applied to a processing chip of a mainboard, wherein the mainboard further comprises a mainboard NFC chip, the mainboard NFC chip is used for transmitting data with a screen device, and the image data transmission method comprises the following steps: if an interrupt signal generated when a target screen device is connected to the mainboard is received, sending a parameter acquisition instruction to the target screen device through the mainboard NFC chip; receiving screen parameters returned by the target screen device through the mainboard NFC chip, and determining a target resolution according to the screen parameters; and sending the image data of the target resolution to the target screen device through the mainboard NFC chip so that the target screen device can display the picture of the target resolution.

The method and the device for processing the image resolution of the target screen device have the advantages that when the interrupt signal generated when the target screen device is connected to the mainboard is received, the target screen device is connected with the contact on the mainboard, at the moment, the screen parameter of the target screen device is obtained through the NFC chip of the mainboard, the target resolution is determined according to the screen parameter, and the most suitable image resolution of the target screen device is obtained. And the processing chip sends the image data of the target resolution to the target screen device through the NFC chip of the mainboard, so that the target screen device displays the picture corresponding to the target resolution. According to the method and the device, after the screen connected with the main board is detected to be replaced, the screen parameters of the target screen device are obtained, the target resolution ratio adaptive to the target screen device is further determined, and the image data of the target resolution ratio are sent to the target screen device, so that the target screen device can display the picture with the appropriate resolution ratio, and therefore the problem that the picture display quality is reduced after the screen is replaced can be solved. The application also provides an image display method, a processing chip of the mainboard, a screen IC chip of the target screen device and a wearable device, and the method has the beneficial effects and is not repeated herein.

Drawings

In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.

Fig. 1 is a flowchart of an image data transmission method according to an embodiment of the present application;

fig. 2 is a flowchart of another image data transmission method according to an embodiment of the present application;

fig. 3 is a flowchart of an image display method according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram illustrating a principle of a method for hot swapping a bracelet screen according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, fig. 1 is a flowchart of an image data transmission method according to an embodiment of the present disclosure.

The specific steps may include:

s101: if an interrupt signal generated when the target screen device is connected to the mainboard is received, sending a parameter acquisition instruction to the target screen device through the NFC chip of the mainboard;

the present embodiment may be applied to a processing chip in a motherboard, where the motherboard may be a motherboard of an electronic device; as a possible embodiment, the main board may be a generic name of other devices in the electronic apparatus besides the screen device. The electronic devices include, but are not limited to, a mobile phone, a tablet computer, a smart bracelet, a smart watch, and the like. The main board further includes a main board NFC (Near Field Communication) chip, and the main board NFC chip is used for transmitting data with the screen device.

The mainboard and the target screen device can be provided with magnetic attraction contacts, the target screen device is connected with the mainboard through the magnetic attraction contacts, and when the target screen device is correctly installed on the mainboard, the magnetic attraction contacts can generate interrupt signals and send the interrupt signals to a processing chip of the mainboard. When an interrupt signal generated when the target screen device is connected to the motherboard is received, it can be stated that a new screen (i.e., the target screen device) is connected to the motherboard at this time.

It can be understood that, before receiving an interrupt signal generated when the target screen device is connected to the motherboard, there may be an operation of disconnecting the original screen device from the motherboard, and after the original screen device is disconnected from the motherboard, the processing chip of the motherboard may enter a sleep state so as to reduce power consumption; accordingly, after receiving an interrupt signal generated when the target screen device is connected to the motherboard, the processing chip of the motherboard can be woken up to enter a normal operating state.

After detecting that the target screen device is connected to the motherboard, the embodiment sends a parameter acquisition instruction to the target screen device through the motherboard NFC chip. Specifically, the target screen device may include a screen NFC chip and a screen IC chip, and after the motherboard NFC chip sends a parameter acquisition instruction to the screen NFC chip, the screen NFC chip parses the parameter acquisition instruction and transmits a data acquisition request to the screen IC chip, so that the screen IC chip returns a screen parameter to the motherboard NFC chip through the screen NFC chip.

S102: receiving screen parameters returned by the target screen device through the NFC chip of the mainboard, and determining target resolution according to the screen parameters;

the mainboard NFC chip can analyze the data packet transmitted by the target screen device to obtain the screen parameters, and returns the screen parameters to the processing chip of the mainboard. The main board NFC chip may also directly return the data packet transmitted by the target screen device to the processing chip, so that the processing chip analyzes the data packet to obtain the screen parameter of the target screen device.

The screen parameter may include Extended Display Identification Data (EDID) of the target screen device, and the present embodiment may determine the target resolution corresponding to the target screen device according to a corresponding relationship between the screen parameter and the resolution. As a possible implementation manner, the present embodiment may determine the screen model of the target screen device according to the screen parameters, and query the target resolution of the target screen device according to the screen model. The target resolution mentioned in this embodiment is the most suitable resolution of the target screen device, and the picture display quality of the target screen device at the target resolution meets the preset requirement. The present embodiment can evaluate the picture display quality based on the definition, sharpening and color uniformity of the display picture of the target screen device.

S103: and sending the image data of the target resolution to the target screen device through the NFC chip of the mainboard so that the target screen device can display the picture of the target resolution.

On the basis of determining the target resolution according to the screen parameters of the target screen device, the embodiment may send the image data of the target resolution to the target screen device through the NFC chip of the motherboard, and the target screen device may display the picture of the target resolution after receiving the image data.

In this embodiment, when receiving an interrupt signal generated when the target screen device is connected to the motherboard, it indicates that the target screen device is already connected to the contact on the motherboard, and at this time, the screen parameter of the target screen device is obtained through the motherboard NFC chip, and the target resolution is determined according to the screen parameter, that is, the most suitable picture resolution of the target screen device is obtained. And the processing chip sends the image data of the target resolution to the target screen device through the NFC chip of the mainboard, so that the target screen device displays the picture corresponding to the target resolution. In the embodiment, after the screen connected with the main board is detected to be replaced, the screen parameters of the target screen device are obtained, the target resolution suitable for the target screen device is further determined, and the image data of the target resolution are sent to the target screen device, so that the target screen device can display the picture with the suitable resolution, and therefore the problem of the reduction of the picture display quality after the screen is replaced can be solved.

Fig. 1 illustrates a scheme for transmitting image data after a target screen device is connected to a motherboard, where the target screen device is detachably mounted on the motherboard in this embodiment, and therefore, if an interrupt signal generated when the target screen device is disconnected from the motherboard is received, which indicates that the target screen device is detached from the motherboard, the processing chip may stop sending the image data of the target resolution to the target screen device through the motherboard NFC chip.

As a possible implementation manner, after stopping sending the image data, the processing chip may further send a reset instruction to the motherboard NFC chip, so as to initialize the motherboard NFC chip, and reduce power consumption. In daily use, a screen of an electronic device can cause damage to a circuit of the screen under the conditions of impact, water inflow and the like. However, since a part of other devices is added to the inside of the device screen in the related art, the device screen needs to be replaced together during replacement, which results in high cost for replacing the screen. The electronic equipment in the embodiment comprises the target screen device and the main board, and other additional components irrelevant to image display do not exist in the target screen device, so that the embodiment can reduce the screen replacement cost to a certain extent. Furthermore, because the screen of the embodiment supports hot plug and multi-screen switching, on the basis of breaking one screen, other uses are not affected, the screen can be changed for continuous use, the situation that the equipment cannot be used due to the damage of the screen is avoided, and the use cost is reduced.

Referring to fig. 2, fig. 2 is a flowchart of another image data transmission method provided in an embodiment of the present application, where this embodiment is a further description of sending, in the embodiment corresponding to fig. 1, the image data with the target resolution to the target screen device by S103, and a further implementation may be obtained by combining this embodiment with the embodiment corresponding to fig. 1, where this embodiment may include the following steps:

s201: sending image data of a frame of target resolution to the target screen device through the mainboard NFC chip;

s202: judging whether response information returned by the target screen device is received within preset time; if yes, entering S203; if not, entering S204;

s203: sending next frame image data of the target resolution to the target screen device through the mainboard NFC chip;

s204: and repeatedly sending the current frame image data of the target resolution to the target screen device through the mainboard NFC chip.

After sending one frame of image data to the target screen device, if the target screen device receives the image data, the response information may be returned to the processing chip, so that the processing chip sends the next frame of image data. If the target screen device is damaged or water enters, the target screen device cannot return response information to the processing chip. At this time, the same image data can be repeatedly sent to the target screen device, and the sending times of the current frame image data with the target resolution can be repeatedly sent are recorded; and if the sending times are greater than the preset times, generating screen abnormity prompt information. The form of the screen abnormality prompt message includes, but is not limited to, voice, vibration, and LED (Light Emitting Diode) lamp flashing.

Referring to fig. 3, fig. 3 is a flowchart of an image display method according to an embodiment of the present disclosure, where the embodiment provides an implementation manner of a target screen device receiving image data and displaying a picture, and the embodiment may include the following steps:

s301: if a parameter acquisition instruction sent by a mainboard is received, sending screen parameters to the mainboard through the screen NFC chip;

the parameter obtaining instruction is an instruction sent by a processing chip of the mainboard after receiving an interrupt signal generated when the target screen device is connected to the mainboard, so that the operation of connecting the target screen device to a magnetic attraction contact on the mainboard can be performed before the step, and the magnetic attraction contact can send a corresponding interrupt signal to the processing chip of the mainboard.

The target screen device mentioned in this embodiment may include a screen IC (Integrated Circuit) chip and a screen NFC chip, where the screen NFC chip is configured to transmit data with a motherboard, and the screen IC chip in this embodiment may receive a parameter acquisition instruction sent by the motherboard through the screen NFC chip, and then send a screen parameter to the motherboard through the screen NFC chip.

S302: receiving image data sent by the mainboard through the screen NFC chip;

after the mainboard receives the screen parameters of the target screen device, the target resolution corresponding to the target screen device can be determined according to the screen parameters, and the image data of the target resolution is sent to the target screen device through the NFC technology, namely, the screen IC chip receives the image data of the target resolution sent by the host through the screen NFC chip.

S303: displaying a picture of the image data on the target screen device.

After receiving the image data sent by the main board, the screen IC chip can display a corresponding picture. The screen parameters of the target screen device are sent to the processing chip of the mainboard, and the processing chip sends image data of the target resolution to the target screen device through the NFC chip of the mainboard, so that the target screen device displays the picture corresponding to the target resolution. In the embodiment, after the screen connected with the main board is detected to be replaced, the screen parameters of the target screen device are obtained, the target resolution suitable for the target screen device is further determined, and the image data of the target resolution are sent to the target screen device, so that the target screen device can display the picture with the suitable resolution, and therefore the problem of the reduction of the picture display quality after the screen is replaced can be solved.

The embodiment of the application also provides wearable equipment, which can comprise a mainboard and a target screen device, wherein the mainboard comprises a processing chip and a mainboard NFC chip, and the target screen device comprises a screen IC chip and a screen NFC chip;

the process of transmitting the image data to the target screen device by the mainboard for displaying comprises the following steps: if the processing chip receives an interrupt signal generated when a target screen device is connected to the mainboard, sending a parameter acquisition instruction to the screen NFC chip through the mainboard NFC chip; the screen NFC chip analyzes the parameter acquisition instruction and transmits a data acquisition request to the screen IC chip; the screen IC chip transmits a data packet corresponding to the data acquisition request to the screen NFC chip; the screen NFC chip analyzes the data packet to obtain screen parameters, and transmits the screen parameters to the processing chip through the mainboard NFC chip; the processing chip determines a target resolution according to the screen parameters and sends image data of the target resolution to the mainboard NFC chip; and the mainboard NFC chip transmits the image data of the target resolution to the screen NFC chip so that the screen NFC chip transmits the image data of the target resolution to the screen IC chip for display. Further, the target screen device and the main board in this embodiment are connected through a magnetic contact.

Above-mentioned embodiment is through the fixed target screen device of magnetism technique of inhaling, and the installation and the dismantlement of the dial plate of being convenient for. The wearable device provided by the embodiment is a screen device with a size corresponding to different use scenes, and the specific supported scenes can include: a dial (i.e., a screen device) of a smaller size is used for outdoor sports, and a dial of a large size is used for expansion in a company or at home for office study. Can realize work through this embodiment, the motion and life configure through a tractor serves several screens, have expanded wearing equipment's range of application.

Referring to fig. 4, fig. 4 is a schematic diagram illustrating a principle of a method for hot swapping a bracelet screen according to an embodiment of the present application, which may specifically include the following steps:

step 1: when the magnetic attraction contact of the screen is connected to the magnetic attraction contact corresponding to the bracelet mainboard, an interrupt signal is generated; the magnetic attraction point sends an interrupt signal to the main chip so as to wake up the main chip.

Step 2: after the main chip is awakened, an instruction is sent to the NFC chip of the mainboard, and the EDID information of the screen is required to be acquired.

And step 3: and the NFC chip of the mainboard sends information of the specified data format. And after the screen NFC chip receives the information sent by the mainboard NFC chip, the data format information is analyzed.

And 4, step 4: the screen NFC chip obtains the EDID information through a designated mipi (Mobile industry processor Interface) or spi (Serial Peripheral Interface) with the screen IC chip.

And 5: and after the screen IC chip acquires the data request sent by the mipi interface or the spi interface, feeding back screen EDID information to the screen NFC chip.

Step 6: and the screen NFC chip sends the information of the specified data format. The mainboard NFC chip receives the information sent by the screen NFC chip and analyzes the returned EDID information.

And 7: and the mainboard NFC chip feeds back the EDID information of the screen loaded at the moment to the main chip.

And 8: and the main chip selects a picture with a corresponding resolution ratio to send frame data (namely image data) according to the EDID information loaded on the screen.

And step 9: and the main board NFC chip sends the frame data transmitted by the main chip.

Step 10: after receiving the frame data sent by the mainboard NFC chip, the screen NFC chip sends the frame data to the screen IC chip after the frame data is analyzed, and sends ACK (response information) to the mainboard NFC chip to indicate that the frame data is received.

Step 11: and the main chip continuously sends frame data to the main board NFC chip after receiving the ACK.

Step 12: and the main board NFC chip continuously sends the frame data under the condition that the former frame data ACK is normal.

Step 13: after receiving the frame data sent by the mainboard NFC chip, the screen NFC chip sends the frame data to the screen IC chip after the analysis is completed, and sends ACK to the mainboard NFC chip to indicate that the receiving is completed.

Step 14: when the screen is removed, the screen magnetic attraction contact is disconnected with the mainboard magnetic attraction contact, and an interrupt signal is generated to the main chip at the moment.

Step 15: and the main chip stops sending frame data and informs the main board of resetting the NFC chip.

Step 16: the NFC chip of the mainboard receives the reset signal sent by the main chip, resets and waits for next sending.

Further, in this embodiment, the EDID information may also be sent based on other communication ports, for example, uart (Universal Asynchronous Receiver/Transmitter), i2c (Inter-Integrated Circuit, two-wire serial bus), and other ports, which are not limited in this embodiment, and may be flexibly adjusted according to an actual application scenario.

According to the embodiment, the wearable device transmits the image data through the NFC, dynamic switching of the screen supporting multi-resolution can be achieved, and the problem that the display quality of the picture is reduced after the screen is replaced can be avoided.

The embodiment of the present application further provides a processing chip of a motherboard, where the motherboard further includes a motherboard NFC chip, the motherboard NFC chip is used for transmitting data with a screen device, and the processing chip of the motherboard includes:

the parameter acquisition module is used for sending a parameter acquisition instruction to the target screen device through the mainboard NFC chip if an interrupt signal generated when the target screen device is connected to the mainboard is received;

the resolution determination module is used for receiving the screen parameters returned by the target screen device through the mainboard NFC chip and determining the target resolution according to the screen parameters;

and the data transmission module is used for sending the image data of the target resolution to the target screen device through the mainboard NFC chip so that the target screen device can display the picture of the target resolution.

In this embodiment, when receiving an interrupt signal generated when the target screen device is connected to the motherboard, it indicates that the target screen device is already connected to the contact on the motherboard, and at this time, the screen parameter of the target screen device is obtained through the motherboard NFC chip, and the target resolution is determined according to the screen parameter, that is, the most suitable picture resolution of the target screen device is obtained. And the processing chip sends the image data of the target resolution to the target screen device through the NFC chip of the mainboard, so that the target screen device displays the picture corresponding to the target resolution. In the embodiment, after the screen connected with the main board is detected to be replaced, the screen parameters of the target screen device are obtained, the target resolution suitable for the target screen device is further determined, and the image data of the target resolution are sent to the target screen device, so that the target screen device can display the picture with the suitable resolution, and therefore the problem of the reduction of the picture display quality after the screen is replaced can be solved.

Further, the method also comprises the following steps:

the response detection module is used for judging whether response information returned by the target screen device is received within preset time after the image data of the target resolution is sent to the target screen device through the mainboard NFC chip; if so, sending the next frame of image data of the target resolution to the target screen device through the mainboard NFC chip; and if not, repeatedly sending the current frame image data of the target resolution to the target screen device through the mainboard NFC chip.

The abnormity prompting module is used for recording the sending times of repeatedly sending the current frame image data with the target resolution; and the display device is also used for generating screen abnormity prompt information if the sending times are more than the preset times.

Further, the screen parameter is extended display identification data of the target screen device;

correspondingly, the resolution determining module is used for determining the screen model of the target screen device according to the extended display identification data, and inquiring the target resolution of the target screen device according to the screen model.

Further, the method also comprises the following steps:

and the screen disassembly detection module is used for stopping the operation of sending the image data of the target resolution to the target screen device through the mainboard NFC chip if an interrupt signal generated when the target screen device is disconnected from the mainboard is received.

Further, the method also comprises the following steps:

and the reset module is used for sending a reset instruction to the mainboard NFC chip after stopping the operation of sending the image data of the target resolution to the target screen device through the mainboard NFC chip.

The embodiment of the present application further provides a screen IC chip of a target screen device, where the target screen device further includes a screen NFC chip, the screen NFC chip is used for transmitting data with a motherboard, and the screen IC chip of the target screen device includes:

the parameter sending module is used for sending the screen parameters to the mainboard through the screen NFC chip if a parameter obtaining instruction sent by the mainboard is received; the parameter obtaining instruction is an instruction sent by a processing chip of the mainboard after receiving an interrupt signal generated when the target screen device is connected to the mainboard;

the receipt receiving module is used for receiving the image data sent by the mainboard through the screen NFC chip; wherein the resolution of the image data is determined according to the screen parameter;

and the display module is used for displaying the picture of the image data on the target screen device.

In this embodiment, the screen parameters of the target screen device are sent to the processing chip of the motherboard, and the processing chip sends the image data of the target resolution to the target screen device through the NFC chip of the motherboard, so that the target screen device displays the picture corresponding to the target resolution. In the embodiment, after the screen connected with the main board is detected to be replaced, the screen parameters of the target screen device are obtained, the target resolution suitable for the target screen device is further determined, and the image data of the target resolution are sent to the target screen device, so that the target screen device can display the picture with the suitable resolution, and therefore the problem of the reduction of the picture display quality after the screen is replaced can be solved.

Since the embodiments of the apparatus portion and the method portion correspond to each other, please refer to the description of the embodiments of the method portion for the embodiments of the apparatus portion, which is not repeated here.

The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.

It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.