阅读说明：本技术 一种显示设备及投屏系统 (Display device and screen projection system ) 是由 王正刚 于 2020-06-30 设计创作，主要内容包括：本发明实施例涉及显示技术领域,公开了一种显示设备及投屏系统。本发明中,显示设备包括：用于与终端设备相连的第一Type-C口、与所述第一Type-C口相连的第一协议管理芯片和显示模块；所述第一协议管理芯片用于在所述显示设备和所述终端设备相连时、利用CC逻辑以将所述显示设备判定为从设备,并协调所述第一Type-C口与所述终端设备建立握手连接；所述第一Type-C口用于在握手连接成功后、接收所述终端设备发送的、利用CC逻辑控制转换的DP信号,并传输给所述显示模块；所述显示模块用于接收所述DP信号并进行显示。本发明提供的显示设备及投屏系统,通过Type-C连接线将显示设备和终端设备相连以实现二者之间的通信,减少了外围接口及桥接设备,使用和携带更加便捷。(The embodiment of the invention relates to the technical field of display, and discloses a display device and a screen projection system. In the present invention, a display device includes: the device comprises a first Type-C port used for being connected with terminal equipment, a first protocol management chip connected with the first Type-C port and a display module; the first protocol management chip is used for judging the display equipment as slave equipment by utilizing CC logic when the display equipment is connected with the terminal equipment, and coordinating the first Type-C port to establish handshake connection with the terminal equipment; the first Type-C port is used for receiving DP signals which are sent by the terminal equipment and are converted by utilizing CC logic control after the handshake connection is successful, and transmitting the DP signals to the display module; and the display module is used for receiving and displaying the DP signal. According to the display device and the screen projecting system, the display device and the terminal device are connected through the Type-C connecting line to achieve communication between the display device and the terminal device, peripheral interfaces and bridging devices are reduced, and the display device and the screen projecting system are convenient to use and carry.)

1. A display device, comprising: the device comprises a first Type-C port used for being connected with terminal equipment, a first protocol management chip connected with the first Type-C port and a display module;

the first protocol management chip is used for judging the display equipment as slave equipment by utilizing CC logic when the display equipment is connected with the terminal equipment, and coordinating the first Type-C port to establish handshake connection with the terminal equipment;

the first Type-C port is used for receiving DP signals which are sent by the terminal equipment and are converted by utilizing CC logic control after the handshake connection is successful, and transmitting the DP signals to the display module;

and the display module is used for receiving and displaying the DP signal.

2. The display device according to claim 1, further comprising a data acquisition module connected to the first protocol management chip, the data acquisition module configured to acquire externally input data;

the first Type-C port comprises a first data port and a second data port, and the first protocol management chip is used for establishing handshake connection between the first data port and the terminal equipment and establishing handshake connection between the second data port and the terminal equipment after the handshake connection between the first data port is successful;

the first data port is used for transmitting the data acquired by the data acquisition module to the terminal equipment, and the second data port is used for transmitting the DP signal from the terminal equipment to the display module.

3. The display device of claim 2, wherein the data acquisition module comprises: the system comprises an SOC chip and a data collector connected with the SOC chip, wherein the data collector comprises any one of a camera, a touch screen, a leather sheath keyboard and a microphone or any combination thereof.

4. The display device according to claim 1, further comprising a fast charging unit, the fast charging unit comprising: the system comprises a second Type-C port, a quick charging chip, a second protocol management chip, a battery and a power management chip, wherein the second Type-C port is connected with a quick charging adapter;

the second protocol management chip is used for controlling the quick charging chip to charge the battery;

and the power management chip is used for controlling the quick charging chip to supply power to the system of the display equipment.

5. The display device according to claim 4, wherein the fast charging chip comprises a main charging chip and at least one slave charging chip which are respectively connected with the second Type-C port, and the main charging chip and the slave charging chip are connected in parallel and then connected with the battery.

6. The display device according to claim 5, wherein the fast charging unit further comprises an overvoltage protection chip, and the main charging chip and the auxiliary charging chip are both connected with the second Type-C port through the overvoltage protection chip.

7. The display device of claim 4, further comprising a reverse charging module comprising a boost power chip connected to both the battery and the first Type-C port;

the boost power supply chip is used for controlling the first Type-C port to charge the terminal equipment;

the first protocol management chip is further used for adjusting the charging voltage and the charging current for charging the terminal equipment.

8. The display device according to claim 7, wherein the reverse charging module further comprises an overcurrent protection chip, and the boost power supply chip is connected to the first Type-C port via the overcurrent protection chip.

9. A screen projection system, comprising: a display device as claimed in any one of claims 1 to 8, a Type-C connection line and a terminal device, the display device being connected to the terminal device via the connection line.

Technical Field

The embodiment of the invention relates to the technical field of display, in particular to a display device and a screen projection system.

Background

The development of intelligent terminals is changing day by day, and the demand for real-time mapping of terminal display content to a large-size display screen under a specific scene is increasing. In the prior art, a terminal is connected with a screen projection box in a wired or wireless mode, the screen projection box outputs the image to be externally connected to a display device, and the display device displays the image.

The inventor finds that at least the following problems exist in the prior art: because the display equipment and the terminal need to communicate through the screen projection box, the screen projection box must be additionally carried and installed in the using process of the display equipment, and the use and the carrying are inconvenient.

Disclosure of Invention

The display device and the screen projection system are connected through the Type-C connecting line to achieve communication between the display device and the terminal device, so that peripheral interfaces and bridging devices are reduced, and the display device and the screen projection system are convenient to use and carry.

To solve the above technical problem, an embodiment of the present invention provides a display device including: the device comprises a first Type-C port used for being connected with terminal equipment, a first protocol management chip connected with the first Type-C port and a display module; the first protocol management chip is used for judging the display equipment as slave equipment by utilizing CC logic when the display equipment is connected with the terminal equipment, and coordinating the first Type-C port to establish handshake connection with the terminal equipment; the first Type-C port is used for receiving DP signals which are sent by the terminal equipment and are converted by utilizing CC logic control after the handshake connection is successful, and transmitting the DP signals to the display module; and the display module is used for receiving and displaying the DP signal.

The embodiment of the invention also provides a screen projection system, which comprises: like display device, Type-C connecting wire and terminal equipment as above, the display device via the connecting wire with terminal equipment links to each other.

Compared with the prior art, the display device provided by the embodiment of the invention comprises the following components: the display device comprises a first Type-C port, a first protocol management chip and a display module, wherein the first Type-C port is used for being connected with a terminal device, the first protocol management chip is connected with the first Type-C port and is used for utilizing CC logic to judge the display device as a slave device when the display device is connected with the terminal device and coordinating the first Type-C port to establish handshake connection with the terminal device, the first Type-C port is used for receiving DP signals which are sent by the terminal device and are controlled and converted by the CC logic after the handshake connection is successful and transmitting the DP signals to the display module, the display module is used for receiving and displaying the DP signals, and in the using process of the display device, only a Type-C connecting line needs to be carried, the display device is connected with the terminal device by the Type-C connecting line, compared with the prior art, the communication between the display device and the terminal is realized by a screen projection box, peripheral interfaces and bridging equipment are reduced, and the use and carrying are more convenient.

In addition, the display device further comprises a data acquisition module connected with the first protocol management chip, wherein the data acquisition module is used for acquiring externally input data; the first Type-C port comprises a first data port and a second data port, and the first protocol management chip is used for establishing handshake connection between the first data port and the terminal equipment and establishing handshake connection between the second data port and the terminal equipment after the handshake connection between the first data port is successful; the first data port is used for transmitting the data acquired by the data acquisition module to the terminal equipment, and the second data port is used for transmitting the DP signal from the terminal equipment to the display module. According to the arrangement, when the user is in video call, the user is not limited by the screen range of the terminal and does not need to hold the terminal, the data acquisition module can be directly utilized to acquire the image information of the user, the moving range of the user is enlarged, the hands of the user are liberated, and the video call is more convenient for teaching, learning, meeting and other works.

In addition, the data acquisition module includes: the system comprises an SOC chip and a data collector connected with the SOC chip, wherein the data collector comprises any one of a camera, a touch screen, a leather sheath keyboard and a microphone or any combination thereof.

In addition, the display device further includes a fast charging unit, the fast charging unit includes: the system comprises a second Type-C port, a quick charging chip, a second protocol management chip, a battery and a power management chip, wherein the second Type-C port is connected with a quick charging adapter; the second protocol management chip is used for controlling the quick charging chip to charge the battery; and the power management chip is used for controlling the quick charging chip to supply power to the system of the display equipment.

In addition, fill the chip soon including respectively with a main chip and at least one from filling the chip that the second Type-C mouth links to each other, main fill the chip with fill the chip parallelly connected back with from with the battery links to each other.

In addition, fill the unit soon and still include the overvoltage protection chip, mainly fill the chip with fill the chip from the company and all via the overvoltage protection chip with second Type-C mouth links to each other.

In addition, the display device further comprises a reverse charging module, wherein the reverse charging module comprises a boosting power supply chip connected with the battery and the first Type-C port; the boost power supply chip is used for controlling the first Type-C port to charge the terminal equipment; the first protocol management chip is further used for adjusting the charging voltage and the charging current for charging the terminal equipment. According to the arrangement, the whole system can realize simultaneous charging of the display equipment and the terminal equipment by only one charging interface, the interface is simplified, the endurance of the system is guaranteed, and the user experience is improved.

In addition, the reverse charging module further comprises an overcurrent protection chip, and the boosting power supply chip is connected with the first Type-C port through the overcurrent protection chip.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

Fig. 1 is a schematic structural diagram of a display device provided in a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a screen projection system provided in a second embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.

A first embodiment of the present invention relates to a display device 100, as shown in fig. 1, including: a first Type-C port (Type-C2 port) used for connecting with a terminal device, a first protocol management chip (PD/CC1 chip) connected with the first Type-C port and a display module 11; the first protocol management chip is configured to determine the display device 100 as a slave device by using CC logic when the display device 100 is connected to the terminal device, and coordinate the first Type-C port to establish a handshake connection with the terminal device; the first Type-C port is configured to receive a DP signal sent by the terminal device and converted by CC logic control after the handshake connection is successful, and transmit the DP signal to the display module 11; the display module 11 is configured to receive the DP signal and perform display.

In this embodiment, the display device 100 further includes a data acquisition module 12 connected to the first protocol management chip, where the data acquisition module 12 is configured to acquire externally input data; the first Type-C port comprises a first data port (USB2.0) and a second data port (USB3.0TX/RX), and the first protocol management chip is used for establishing handshake connection between the first data port and the terminal equipment, and establishing handshake connection between the second data port and the terminal equipment after the handshake connection between the first data port is successfully and stably established; the first data port is configured to transmit data acquired by the data acquisition module 12 to the terminal device, and the second data port is configured to transmit the DP signal from the terminal device to the display module 11. With the arrangement, when the user is in video call, the user is not limited by the screen range of the terminal and does not need to hold the terminal, the image information of the user can be directly acquired by the data acquisition module 12, the moving range of the user is enlarged, the hands of the user are liberated, and the video call is more convenient for teaching, learning, meeting and other works.

Specifically, the data acquisition module 12 may include: the system comprises an SOC chip (SOC embedded chip), a data collector and a Memory (Memory), wherein the data collector and the Memory are connected with the SOC chip, the data collector comprises any one of a camera (camera CAM), a touch screen (touch screen TP), a leather sheath keyboard and a microphone (audio microphone DSP, CODEC) or any combination thereof, and the display module 11 comprises an image processing chip, a display screen and a loudspeaker, wherein the display screen and the loudspeaker are connected with the image processing chip.

By the arrangement, the diversity of human-computer interaction of the display device 100 is enriched, for example, through the addition of the camera and the microphone, the user does not need to operate the terminal device during video call, and the user can interact with the display device 100 in the face of the user, so that both hands are liberated, and multi-thread work can be carried out.

In practical application, the data acquisition part mainly encodes data such as CAM/TP/intelligent voice (microphone and loudspeaker)/keyboard mounted on an SOC chip, and then transmits the encoded data back to the terminal equipment for processing through USB2.0 in an H.264/HID format, and the terminal equipment transmits the processed data to the image processing chip for processing through DP signals of USB3.0, and finally displays the processed data on a display screen.

After the display device 100 and the terminal device are connected through a Type-C connection line, the first protocol management chip may utilize CC logic to determine the display device 100 as a slave device, and coordinate and preferentially establish a handshake connection between the first data Port and the terminal device, and establish a handshake connection between the second data Port and the terminal device after the handshake connection of the first data Port is successfully stabilized, after the handshake connection of the first data Port and the second data Port is successfully established with the terminal, the terminal may change a signal of the USB3.0 into a Dispaly Port signal (DP signal) through CC logic control (Alternate mode) and transmit the signal to the display module 11 for screen projection display.

For the data transmission of the data acquisition module 12, the data can be transmitted back to the terminal device via the USB2.0 for processing, displaying, and projecting to the display device 100. For example, after the terminal opens the CAM application of the camera, the CAM module of the DATA acquisition module 12 on the display device 100 is opened to perform DATA acquisition, and at the same time, the DATA is processed by the ISP unit on the SOC chip and then encoded and transmitted back to the terminal device, at this time, the DATA is transmitted through the USB DATA1 signal of USB2.0, the DATA transmitted back to the terminal is subjected to priority processing and then transmitted to the image processing chip on the display device 100 as the DP signal of USB3.0, the image processing chip performs image scaling processing according to images with different resolutions, and finally, the image is projected on the display screen (the screen resolution can support 2K at the maximum, and the screen size can be more than 12 inches).

Data transmission of the display module 11 is mainly realized through an image processing chip, the image processing chip can convert an input DP signal into an eDP signal and output the eDP signal to a display screen for display, and meanwhile, the processing chip is also connected with a loudspeaker and a screen backlight driving chip, the loudspeaker is used for controlling the sound intensity of the loudspeaker, and the screen backlight driving chip is used for adjusting the backlight brightness.

Optionally, the display device 100 may further include a fast charging unit 13 (capable of performing 50W fast charging), where the fast charging unit 13 may include: the second Type-C port (Type-C2 port) that is used for linking to each other with the adapter that fills soon, with the chip and the second agreement management chip (PD/CC2 chip of taking PD3.0 charge management agreement certainly) are filled soon that the second Type-C mouth links to each other, and respectively with Battery (Battery) and power management chip (PMIC) that the chip links to each other fill soon, the second agreement management chip is used for controlling the chip that fills soon gives Battery (Battery capacity 10000mAH) charge, the power management chip is used for control fill soon the chip give display device 100's system power supply.

Specifically, the quick charging chip may include a main charging chip and at least one slave charging chip respectively connected to the second Type-C port (Type-C1 port), and the main charging chip and the slave charging chip are connected in parallel and then connected to the battery, in this embodiment, the quick charging chip includes a main charging chip (charging current is 4A) and two slave charging chips (charging current of each slave charging chip is 3A), so as to support a charging current of 4A, 7A or 10A.

In practical application, the fast charging unit 13 may further include an overvoltage protection chip (OVP), and the main charging chip and the slave charging chip are both connected to the second Type-C port via the overvoltage protection chip, so that the reliability of the circuit can be improved.

In this embodiment, the display device 100 may further include a reverse charging module 14, the reverse charging module 14 includes a Boost power chip (VBAT is a battery voltage in fig. 1) connected to both the battery and the first Type-C port, the Boost power chip is configured to control the first Type-C port to charge the terminal device, the first protocol management chip is further configured to adjust a charging voltage and a charging current for charging the terminal device, that is, the Boost power chip (power supply IC, Boost) on the display device 100 boosts the voltage for charging the terminal device, the Boost power chip supports 5V/3A output at maximum, and thus, the display device 100 performs fast charging through the Type-C1 port and then performs power compensation on the terminal through the Type-C2 port, so that it is ensured that the power supply of the whole screen projection system is not intermittent, the device can continuously and stably work, improves user experience, simplifies a charging interface between two devices, and improves the convenience of user use.

Optionally, the reverse charging module 14 may further include an overcurrent protection chip (OCP), and the boost power supply chip is connected to the first Type-C port via the overcurrent protection chip, so that the reliability of the circuit can be improved.

Compared with the prior art, the display device 100 comprises: the device comprises a first Type-C port, a first protocol management chip and a display module 11, wherein the first Type-C port is used for being connected with a terminal device, the first protocol management chip is connected with the first Type-C port and is used for utilizing CC logic to judge the display device 100 as a slave device when the display device 100 is connected with the terminal device and coordinating the first Type-C port to establish handshake connection with the terminal device, the first Type-C port is used for receiving DP signals which are sent by the terminal device and converted by utilizing the CC logic control after the handshake connection is successful and transmitting the DP signals to the display module 11, the display module 11 is used for receiving and displaying the DP signals, and only a Type-C connecting wire needs to be carried in the using process of the display device 100, and the display device 100 is connected with the terminal device by utilizing the Type-C connecting wire, the terminal and the display device 100 form a small computer system, the terminal is used as a host, compared with the prior art that the display device 100 and the terminal are communicated by using a screen projection box, peripheral interfaces and bridging devices (screen projection boxes or conversion bridges) are reduced, the terminal is more convenient to use and carry, and is very suitable for application scenes such as education, traveling/outgoing and the like.

A second embodiment of the present invention relates to a screen projection system, as shown in fig. 2, including: as the display device 100, the Type-C connection line 200 and the terminal device 300 as described above, the display device 100 is connected to the terminal device 300 via the Type-C connection line 200.

It should be understood that this embodiment is a system example corresponding to the first embodiment, and may be implemented in cooperation with the first embodiment. The related technical details mentioned in the first embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the first embodiment.

It should be noted that each module referred to in this embodiment is a logical module, and in practical applications, one logical unit may be one physical unit, may be a part of one physical unit, and may be implemented by a combination of multiple physical units. In addition, in order to highlight the innovative part of the present invention, elements that are not so closely related to solving the technical problems proposed by the present invention are not introduced in the present embodiment, but this does not indicate that other elements are not present in the present embodiment.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.