CN116743952B

CN116743952B - Host device, head-mounted display device, and data transmission method

Info

Publication number: CN116743952B
Application number: CN202311007540.8A
Authority: CN
Inventors: 刘志能; 郑晓慧; 周森
Original assignee: Hangzhou Companion Technology Co ltd
Current assignee: Hangzhou Companion Technology Co ltd
Priority date: 2023-08-11
Filing date: 2023-08-11
Publication date: 2024-04-30
Anticipated expiration: 2043-08-11
Also published as: CN116743952A

Abstract

Embodiments of the present disclosure disclose a host device, a head-mounted display device, and a data transmission method. One embodiment of the host device includes: the host device includes: host computer digital interface, audio/video signal conversion module and host computer chip, wherein: the host device is in communication connection with the display device through a host digital interface; the host chip and the audio-video signal conversion module are connected in communication, wherein the audio-video signal conversion module is configured to: receiving a device identification signal of the display device, and switching an output video format of the media signal according to the device identification signal; the audio/video signal conversion module included in the host device includes: the first video format is converted into a second video format and the bypass control circuit. This embodiment may reduce power consumption of the host device.

Description

Host device, head-mounted display device, and data transmission method

Technical Field

Embodiments of the present disclosure relate to the technical field of head-mounted display devices, and in particular, to a host device, a head-mounted display device, and a data transmission method.

Background

The head-mounted display device includes an AR (Augmented Reality ) device (e.g., AR glasses) that can be worn on the head, and an optical display system of the AR device generally includes a micro display screen and optical elements, so that preset display contents can be displayed in a real environment by superimposing them through an optical path design on the basis of not blocking the real environment, and interactive feedback is enabled. Current AR glasses devices typically require a connection to a host device and content provided by the host device for display on the optical display system of the AR glasses.

When data transmission is performed between the host device and the display device (e.g., AR glasses), the display device supports only media signals input in the second video format (DP) through the digital interface (DP, displayPort), and the host chip in the host device supports only media signals output in the first video format (HDMI) through the media interface (HDMI, high Definition Multimedia Interface, high-definition multimedia interface). Currently, when data is transmitted between a host device and a display device, the following methods are generally adopted: a dedicated signal conversion chip is provided on the host device to convert the media signal into a digital signal to output the Digital (DP) signal to the head-mounted display device through a digital interface (DP).

However, the inventors found that when data transmission is performed in the above manner, there are often the following technical problems:

For a display device supporting both a first video format (HDMI) and a second video format (DP), if a dedicated signal conversion chip provided on a host device continuously converts a media signal of the first video format (HDMI) into a media signal of the second video format (DP) according to an existing hardware design, the signal conversion chip continuously operates, resulting in an increase in power consumption of the host device.

The above information disclosed in this background section is only for enhancement of understanding of the background of the inventive concept and, therefore, may contain information that does not form the prior art that is already known to those of ordinary skill in the art in this country.

Disclosure of Invention

The disclosure is in part intended to introduce concepts in a simplified form that are further described below in the detailed description. The disclosure is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.

Some embodiments of the present disclosure propose a host device, a head-mounted display device, and a data transmission method to solve one or more of the technical problems mentioned in the background section above.

In a first aspect, some embodiments of the present disclosure provide a host device comprising: host computer digital interface, audio/video signal conversion module and host computer chip, wherein: the host device is in communication connection with the display device through the host digital interface, wherein the host chip is used for controlling the output of the media signal in the first video format, and the host digital interface is used for outputting the media signal to the display device; the host chip and the audio/video signal conversion module included in the host device are in communication connection, wherein the audio/video signal conversion module is configured to: receiving the device identification signal of the display device, and switching the output video format of the media signal according to the device identification signal; the audio/video signal conversion module included in the host device includes: the device comprises a first video format-to-second video format module and a bypass control circuit, wherein the bypass control circuit is used for directly outputting the media signal in the first video format to the display device.

Optionally, the above host device further includes: an equipment patch cord, the display device includes: display interface and audio/video signal conversion module, wherein: the host chip included in the host device is in communication connection with the display interface included in the display device through the host digital interface and the device patch cord; the display equipment comprises a display interface and an audio/video signal conversion module which are in communication connection, wherein the display interface is used for receiving media signals; the host chip is configured to: in response to determining that the device identification signal received from the audio/video signal conversion module included in the host device meets a preset identification condition, identifying the display device as an adaptive display device, and transmitting transmission mode switching information to control the audio/video signal conversion module included in the adaptive display device to receive a media signal in a first video format, and transmitting the media signal in the first video format to the adaptive display device through the device patch cord via a first communication protocol, wherein the first communication protocol is used for transmitting the media signal in the first video format.

Optionally, the host chip included in the host device is in communication connection with an audio/video signal conversion module, where the host chip is configured to control the audio/video signal conversion module, and the video audio/video signal conversion module is configured to convert the media signal in the first video format into the media signal in the second video format; the host chip is configured to: in response to determining that the device identification signal received from the audio-video signal conversion module included in the host device does not satisfy the preset identification condition, identifying the display device as a non-adaptive display device, controlling the audio-video signal conversion module included in the host device to convert a media signal in a first video format into a media signal in a second video format, and transmitting the media signal in the second video format to the non-adaptive display device through the device patch cord via a second communication protocol, wherein the second communication protocol is used for transmitting the media signal in the second video format.

Optionally, the host digital interface includes: a downstream communication interface pin and a downstream data interface pin set, wherein the device patch cord comprises: a digital upstream interface, said digital upstream interface comprising: an upstream communication interface pin and a set of upstream data interface pins, wherein: the host digital interface comprises a downlink communication interface pin which is in communication connection with an uplink communication interface pin which is arranged on the equipment patch cord; the digital uplink interface comprises an uplink communication interface pin which is provided with a pull-up resistor, wherein the uplink communication interface pin is used for generating a communication confirmation signal in a connection state; and the downlink data interface pins in the downlink data interface pin set are in one-to-one communication connection with the uplink data interface pins in the uplink data interface pin set included in the equipment patch cord, wherein each downlink data interface pin in the downlink data interface pin set is used for sending media signals, and each uplink data interface pin in the uplink data interface pin set is used for receiving and transmitting media signals.

Optionally, the host digital interface further includes: the downlink identification interface pin, the above digital uplink interface further comprises: the uplink identification interface pin set and the uplink identification pull-up resistor, wherein: the uplink identification interface pins in the uplink identification interface pin set are in communication connection with each other and then are in communication connection with the uplink identification pull-up resistor, wherein each uplink identification interface pin in the uplink identification interface pin set and the uplink identification pull-up resistor are used for generating a wire identification signal in a connection state; the downlink identification interface pin is provided with a series resistor and a pull-down resistor, wherein the downlink identification interface pin is used for receiving the wire identification signal; the downlink identification interface pin is in communication connection with the uplink identification interface pin set through the series resistor and the uplink identification pull-up resistor; the audio/video signal conversion module included in the host device is configured to: and in response to receiving the wire identification signal, transmitting the media signal in the first video format to the display device through the device patch cord via the first communication protocol according to the communication acknowledgement signal.

In a second aspect, some embodiments of the present disclosure provide a head-mounted display device comprising: display device and equipment patch cord, wherein, above-mentioned display device includes: display digital interface and audio/video signal conversion module, above-mentioned equipment patch cord includes: a digital upstream interface, wherein: the display device is in communication connection with the host device through the device patch cord; the display digital interface included in the display device is communicatively connected with the digital uplink interface included in the device patch cord, where the display digital interface is configured to: receiving a media signal in a first video format from the host device in response to identifying a wire identification signal from a digital upstream interface included in the device patch cord; the display device comprises a display digital interface and an audio-video signal conversion module which are in communication connection, wherein the audio-video signal conversion module is used for converting a media signal into a display signal.

Optionally, the display digital interface includes: the downlink identification interface pin, the above-mentioned digital uplink interface includes: the uplink identification interface pin set and the uplink identification pull-up resistor, wherein: the uplink identification interface pins in the uplink identification interface pin set are in communication connection with each other and then are in communication connection with the uplink identification pull-up resistor, wherein each uplink identification interface pin in the uplink identification interface pin set and the uplink identification pull-up resistor are used for generating a wire identification signal in a connection state; the downlink identification interface pin is provided with a series resistor and a pull-down resistor, wherein the downlink identification interface pin is used for identifying the wire identification signal; the downlink identification interface pin is in communication connection with the uplink identification interface pin set through the series resistor and the uplink identification pull-up resistor.

Optionally, the display digital interface further includes: the downlink communication interface pin, the above-mentioned digital uplink interface also includes: an upstream communication interface pin, wherein: the digital uplink interface comprises an uplink communication interface pin which is provided with a pull-up resistor, wherein the uplink communication interface pin is used for generating a communication confirmation signal in a connection state; the display digital interface comprises a downlink communication interface pin which is in communication connection with an uplink communication interface pin which is arranged in the digital uplink interface, wherein the downlink communication interface pin is used for identifying the communication confirmation signal; the audio/video signal conversion module is configured to: and receiving a media signal in a first video format from the host device through the device patch cord according to the communication acknowledgement signal in response to receiving the wire identification signal.

In a third aspect, some embodiments of the present disclosure provide a data transmission method, the data transmission method including: acquiring a media signal to be transmitted; acquiring a device identifier list from a display device through a device patch cord; performing identification processing on the equipment identifier list to obtain an identification result; and transmitting the media signal to be transmitted and preset transmission mode switching information to display equipment in response to determining that the identification result meets a preset identification condition.

The above embodiments of the present disclosure have the following advantageous effects: by the host device of some embodiments of the present disclosure, power consumption of the host device may be reduced. Specifically, the cause of the increase in power consumption of the host device is that: a special signal conversion chip arranged on the host device continuously converts a media signal in a first video format (HDMI) into a media signal in a second video format (DP), and the signal conversion chip continuously works. Based thereon, the host device of some embodiments of the present disclosure includes a host digital interface, an audio-video signal conversion module, and a host chip, wherein: the host device is in communication connection with the display device through the host digital interface, wherein the host chip is used for controlling the output of the media signal in the first video format, and the host digital interface is used for outputting the media signal to the display device; the host chip and the audio/video signal conversion module included in the host device are in communication connection, wherein the audio/video signal conversion module is configured to: receiving the device identification signal of the display device, and switching the output video format of the media signal according to the device identification signal; the audio/video signal conversion module included in the host device includes: the device comprises a first video format-to-second video format module and a bypass control circuit, wherein the bypass control circuit is used for directly outputting the media signal in the first video format to the display device. Thus, the host device can determine that the display device is an adaptive display device through the received device identification signal of the display device. When the display device is identified as an adapted display device, a media signal of a first video format (HDMI) may be directly output to the display device through the bypass control circuit. When the display device is not adapted to the display device, the media signal of the first video format (HDMI) can be converted into the media signal of the second video format (DP) through the first video format-to-second video format module, and then the media signal is output to the display device. Therefore, the host device can convert the media signal of the first video format (HDMI) into the media signal of the second video format (DP) without a first video format-to-second video format module when the display device is determined to be the adaptive display device, so that the power consumption of the host device can be reduced.

Drawings

The above and other features, advantages, and aspects of embodiments of the present disclosure will become more apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings. The same or similar reference numbers will be used throughout the drawings to refer to the same or like elements. It should be understood that the figures are schematic and that elements and components are not necessarily drawn to scale.

FIG. 1 is a schematic structural diagram of some embodiments of a host device according to the present disclosure;

FIG. 2 is a schematic structural diagram of further embodiments of a host device according to the present disclosure;

FIG. 3 is a schematic diagram of the architecture of some embodiments of a host digital interface and device patch cord according to the present disclosure;

FIG. 4 is a schematic structural view of some embodiments of a head mounted display device according to the present disclosure;

Fig. 5 is a schematic diagram illustrating the structure of some embodiments of a digital interface and device patch cord according to the present disclosure;

Fig. 6 is a flow chart of some embodiments of a data transmission method according to the present disclosure;

fig. 7 is a product schematic diagram of some embodiments of a data transmission method according to the present disclosure.

Detailed Description

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It should be understood that the drawings and embodiments of the present disclosure are for illustration purposes only and are not intended to limit the scope of the present disclosure.

In the description of the present disclosure, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art in the specific context.

It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. Embodiments of the present disclosure and features of embodiments may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in this disclosure are merely used to distinguish between different devices, modules, or units and are not used to define an order or interdependence of functions performed by the devices, modules, or units.

It should be noted that references to "one", "a plurality" and "a plurality" in this disclosure are intended to be illustrative rather than limiting, and those of ordinary skill in the art will appreciate that "one or more" is intended to be understood as "one or more" unless the context clearly indicates otherwise.

The names of messages or information interacted between the various devices in the embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.

The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring first to fig. 1, fig. 1 illustrates a schematic diagram of some embodiments of a host device according to the present disclosure. As shown in fig. 1, the host device 1 includes: a host digital interface 11, an audio/video signal conversion module 12 and a host chip 13, wherein: the host device 1 is communicatively connected to the display device 2 via the host digital interface 11, wherein the host chip 13 is configured to control output of media signals in the first video format, and the host digital interface 11 is configured to output media signals to the display device 2. The first video format may be an HDMI (High Definition Multimedia Interface, high-definition multimedia interface) format. The media signal may include, but is not limited to, at least one of: audio signals and video signals. The host digital interface 11 may be a USB Type-C (Universal Serial Bus Type-C, universal serial bus Type C) interface. The host chip 13 may be a computing chip.

By way of example, the above-described computing chip may be, but is not limited to, at least one of: a CPU (Central Processing Unit ) or MCU (Micro controller Unit, micro control unit). The display device 2 may be, but is not limited to, at least one of: a head mounted display device, a television or a display.

In some embodiments, the host device 1 includes a host chip 13 and an audio/video signal conversion module 12 that are communicatively connected, where the audio/video signal conversion module 12 is configured to: receiving the device identification signal of the display device 2 and switching the output video format of the media signal according to the device identification signal. Wherein the device identification signal may characterize device type information of the display device. The above device type information may be information characterizing "adapted display device" or information characterizing "non-adapted display device". The output video format may be HDMI format or DP (digital multimedia interface) format.

The audio/video signal conversion module 12 included in the host device 1 includes: the first video format to second video format module 121 and bypass control circuit 122. Wherein, the bypass control circuit 122 is configured to directly output the media signal in the first video format to the display device 2. The first video format to second video format module 121 may be configured to convert a media signal in a first video format into a media signal in a second video format. Here, the second video format may be a DP format.

The above-described host device 1 is further described below with reference to fig. 2 and 1. Fig. 2 is a schematic structural diagram of further embodiments of the host device 1 according to the present disclosure. As shown in fig. 2, the above-mentioned host device 1 further includes: the device patch cord 3, the display device 2 includes: a display interface 21 and an audio-video signal conversion module 22, wherein: the host chip 13 included in the host device 1 is communicatively connected to the display interface 21 included in the display device 2 via the host digital interface 11 and the device patch cord 3. The display device 2 includes a display interface 21 and an audio/video signal conversion module 22 that are communicatively connected. Wherein the display interface 21 is used for receiving media signals. The host chip 13 described above is configured to: in response to determining that the device identification signal received from the audio/video signal conversion module 12 included in the host device 1 meets a preset identification condition, the display device 2 is identified as an adaptive display device, and transmission mode switching information is transmitted to control the audio/video signal conversion module 2 included in the adaptive display device to receive a media signal in a first video format, and the media signal in the first video format is transmitted to the adaptive display device through the device patch cord 3 via a first communication protocol. Wherein the first communication protocol is used for transmitting the media signal in the first video format.

Specifically, the preset identification condition may be that the device type information represented by the device identification signal is information representing "adapted display device". The transmission mode switching information may characterize that the host chip 13 wants to switch the format of the media signal received by the adapted display device. The first communication protocol may be an HDMI communication protocol.

Optionally, the device patch cord 3 may further include: an upstream interface 32 is shown, wherein: the display uplink interface 32 may be communicatively connected to the display interface 21 included in the display device 2. The display uplink interface 32 may be used to transmit media signals. The display uplink interface 32 may be, but is not limited to, at least one of: USB Type-C interface or HDMI interface. The display interface 21 may be, but is not limited to, at least one of: USB Type-C interface or HDMI interface.

Optionally, the host device 1 includes a host chip 13 communicatively connected to the audio/video signal conversion module 12. The host chip 13 is configured to control the audio/video signal conversion module 12, where the video audio/video signal conversion module 12 is configured to convert the media signal in the first video format into the media signal in the second video format. The host chip 13 is configured to: in response to determining that the device identification signal received from the audio/video signal conversion module 12 included in the host device 1 does not satisfy the preset identification condition, identifying the display device 2 as a non-adaptive display device, controlling the audio/video signal conversion module 12 included in the host device 1 to convert a media signal in a first video format into a media signal in a second video format, and transmitting the media signal in the second video format to the non-adaptive display device through the device patch cord 3 via a second communication protocol. Wherein the second communication protocol transmits the media signal in the second video format. The second communication protocol may be a DP communication protocol.

The host digital interface 11 and the device patch cord 3 described above are further described below in conjunction with fig. 3 and 2. Fig. 3 is a schematic diagram of the architecture of some embodiments of a host digital interface 11 and a device patch cord 3 according to the present disclosure. As shown in fig. 3, the host digital interface 11 includes: the device patch cord 3 includes: a digital upstream interface 31, wherein the digital upstream interface 31 includes: an upstream communication interface pin 311 and an upstream data interface pin set 312, wherein: the downstream communication interface pin 111 included in the host digital interface 11 is communicatively connected to the upstream communication interface pin 311 included in the device patch cord 31. The digital uplink interface 31 includes an uplink communication interface pin 311 provided with a pull-up resistor 3111, wherein the uplink communication interface pin 311 is configured to generate a communication acknowledgement signal in a connected state. The downstream data interface pins in the downstream data interface pin set 112 included in the host digital interface 11 are in one-to-one communication connection with the upstream data interface pins in the upstream data interface pin set 312 included in the device patch cord, where each downstream data interface pin in the downstream data interface pin set 112 is used to send a media signal, and each upstream data interface pin in the upstream data interface pin set 312 is used to receive and transmit a media signal.

Specifically, the downlink data interface pin set 112 may include, but is not limited to, at least one of the following: a downstream data interface pin 1121, a downstream data interface pin 1122, and a downstream data interface pin 1123. The set of uplink data interface pins 312 may include, but is not limited to, at least one of: uplink data interface pin 3121, uplink data interface pin 3122, and uplink data interface pin 3123. The downstream data interface pin 1121 in the downstream data interface pin set 112 may be communicatively connected to the upstream data interface pin 3121 in the upstream data interface pin set 312. The downstream data interface pins 1122 in the downstream data interface pin set 112 may be communicatively coupled to the upstream data interface pins 3122 in the upstream data interface pin set 312. The downstream data interface pin 1123 of the downstream data interface pin set 112 may be communicatively connected to the upstream data interface pin 3123 of the upstream data interface pin set 312. The communication confirmation signal may be used to identify the direction of insertion of the device connection line.

As an example, the resistance value of the pull-up resistor 3111 provided on the upstream communication interface pin 311 may be 10kΩ (kilo ohm). The communication acknowledgement signal may be a CC (Configuration Channel ) signal.

Optionally, the host digital interface 11 further includes: the downstream identification interface pin 113, the digital upstream interface 31 further includes: an upstream identification interface pin set 313 and an upstream identification pull-up resistor 314, wherein: each of the plurality of ul interface pins 313 is communicatively connected to each other and then to the ul pull-up resistor 314. Wherein, each uplink identification interface pin in the uplink identification interface pin set 313 and the uplink identification pull-up resistor 314 are used to generate a wire identification signal in a connected state. The downstream identification interface pin 113 is provided with a series resistor 1131 and a pull-down resistor 1132. The downstream identification interface pin 113 is configured to receive the wire identification signal. The downstream identification interface pin 113 is communicatively connected to the upstream identification interface pin set 313 through the series resistor 1131 and the upstream identification pull-up resistor 314. The above-mentioned host device 1 includes an audio-video signal conversion module 12 configured to: and in response to receiving the wire identification signal, transmitting the media signal in the first video format to the display device through the device patch cord via the first communication protocol according to the communication acknowledgement signal.

Specifically, the uplink identification interface pin set 313 may include, but is not limited to, at least one of the following: an upstream identification interface pin 3131 (a 12 interface) and an upstream identification interface pin 3132 (B12 interface). The wire identification signal may be used to characterize the wire type information of the equipment patch cord as information characterizing "custom wires".

As an example, the resistance value of the above-described upstream identification pull-up resistor 314 may be 10kΩ. The resistance value of the series resistor 1131 provided on the downstream identification interface pin 113 may be 10kΩ. The resistance value of the pull-down resistor 1132 provided on the downstream identification interface pin 113 may be 100kΩ. When the wire Type information is information representing "custom wire", the device patch cord may be a data cord with one end being a USB Type-C interface and the other end being an HDMI interface.

Therefore, when the host device recognizes that the display device is a 'non-adaptive device', the host device can determine that only a media interface (HDMI) is arranged on the display device connected with the device conversion line to transmit the media signal in the first video format by recognizing the wire identification signal on the device conversion line, so that the host device can directly transmit the media signal in the first video format to the display device through the bypass control circuit, and further, the power consumption of the host device can be reduced.

Fig. 4 is a schematic structural view of some embodiments of a head mounted display device according to the present disclosure. As shown in fig. 4, the head-mounted display device includes: a display device 2 and a device patch cord 3, wherein the display device 2 comprises: the display digital interface 23 and the audio/video signal conversion module 22, and the device patch cord 3 includes: a digital upstream interface 31, wherein: the display device 2 is communicatively connected to the host device 1 via the device patch cord. The display digital interface may be a female port of an USB Type-C interface, and the digital uplink interface is a male port of the USB Type-C interface.

In some embodiments, the display digital interface 23 included in the display device 2 is communicatively connected to the digital uplink interface 31 included in the device patch cord 3. Wherein the display digital interface 23 is configured to: in response to identifying the wire identification signal from the digital upstream interface 31 included in the device patch cord 3, a media signal in a first video format is received from the host device 1.

The display device 2 includes a display digital interface 23 in communication with the audio/video signal conversion module 22. The audio/video signal conversion module 22 is configured to convert a media signal into a display signal. The display signal may be, but is not limited to, at least one of: MIPI (Mobile Industry Processor Interface), mobile industry processor interface) signals or LVDS (Low Voltage differential signaling) signals.

The above-described display digital interface 23 and device patch cord 3 are further described below in conjunction with fig. 5 and 4. Fig. 5 is a schematic diagram showing the structure of some embodiments of the digital interface 23 and the device patch cord 3 according to the present disclosure. As shown in fig. 5, the display digital interface 23 includes: the downstream identification interface pin 231, the digital upstream interface 31 includes: an upstream identification interface pin set 313 and an upstream identification pull-up resistor 314, wherein: each of the plurality of ul interface pins 313 is communicatively connected to each other and then to the ul pull-up resistor 314. Wherein, each uplink identification interface pin in the uplink identification interface pin set 313 and the uplink identification pull-up resistor 314 are used to generate a wire identification signal in a connected state. The downstream identification interface pin 231 is provided with a series resistor 2311 and a pull-down resistor 2312. The downstream identification interface pin 231 is used for identifying the wire identification signal. The downstream identification interface pin 231 is communicatively connected to the upstream identification interface pin set 313 through the series resistor 2311 and the upstream identification pull-up resistor 314.

Optionally, the display digital interface 23 further includes: the downstream communication interface pin 232, the digital upstream interface 31 further includes: an upstream communication interface pin 311. Wherein: the digital upstream interface 31 includes an upstream communication interface pin 311 provided with a pull-up resistor 3111. The uplink communication interface pin 311 is used for generating a communication acknowledgement signal in a connection state. The downstream communication interface pin 232 included in the display digital interface 23 is communicatively connected to the upstream communication interface pin 311 included in the digital upstream interface 31, wherein the downstream communication interface pin 232 is used for identifying the communication acknowledgement signal. The audio-video signal conversion module 22 included in the display device 2 is configured to: in response to receiving the wire identification signal, a media signal in a first video format is received from the host device 1 via the device patch cord 3 according to the communication acknowledgement signal via a first communication protocol.

In practice, the above-described host device 1 may be configured to perform the steps of:

First, a media signal to be transmitted is acquired. The media signal to be sent can be obtained from the storage terminal in a wired connection or wireless connection mode. The storage terminal may be a terminal for storing the media signal to be transmitted. The media signal to be transmitted may be a media signal in a first video format. The first video format may be an HDMI format. The media signal may include, but is not limited to, at least one of: audio signals and video signals.

And a second step of acquiring a device identifier list from the display device through the device patch cord. Wherein the list of device identifiers may uniquely identify a display device. The list of device identifiers may include, but is not limited to, at least one of: the device identifies the signal. The device identification signal may characterize device type information of the display device. The above device type information may be information characterizing "adapted display device" or information characterizing "non-adapted display device".

And thirdly, performing identification processing on the equipment identifier list to obtain an identification result. The identifying the device identifier list to obtain an identifying result may be: and when the equipment type information of the equipment identification signal characterization included in the equipment identifier list is the information of the equipment characterization of the 'adapting display equipment', determining the information of the characterization of the 'identification success' as a recognition result, and when the equipment type information of the equipment identification signal characterization included in the equipment identifier list is the information of the characterization of the 'non-adapting display equipment', determining the information of the characterization of the 'identification failure' as a recognition result.

And a fourth step of transmitting the media signal to be transmitted and preset transmission mode switching information to a display device in response to determining that the identification result meets a preset identification condition. The host device may identify the display device as an adaptive display device, send, through a bypass control circuit included in an audio/video signal conversion module included in the host device, a media signal in a first video format to the display device through the device patch cord via a first communication protocol, and then send a preset transmission mode switching (DDC) command to the adaptive display device to control the audio/video signal conversion module included in the adaptive display device to be configured to receive the first video format. The preset recognition condition may be that the recognition result is information indicating "recognition success". The transmission mode switching information to be set may indicate that the host device wants the display device to receive the media signal in the first video format. The first communication protocol may be HDMI protocol.

The above data transmission method solves the technical problem of "accuracy and speed reduction of data transmission" as an invention point of the embodiments of the present disclosure. Factors that lead to reduced accuracy and speed of data transmission tend to be as follows: the mode of converting the media signal in the first video format into the second media signal through the signal conversion chip increases the time of signal conversion and can cause the loss of the media signal. If the above factors are solved, the accuracy and speed of data transmission can be improved. To achieve this, the data transmission method included in the present disclosure may first acquire a media signal to be transmitted. Thereby, a media signal in the first video format can be obtained. Next, a list of device identifiers is obtained from the display device via the device patch cord. Thus, display device type information can be obtained for subsequent identification of the display device. Then, the device identifier list is subjected to identification processing, and an identification result is obtained. Therefore, the identification result of the type information of the display equipment can be obtained, so that different data transmission modes can be switched according to different identification results. And transmitting the media signal to be transmitted and preset transmission mode switching information to display equipment in response to determining that the identification result meets a preset identification condition. Thus, the media signal in the first video format may be directly transmitted to the display device, and the display device may be controlled to directly receive the media signal in the first video format. Therefore, the host device does not need to convert the media signal in the first video format into the media signal in the second video format under the condition of being connected with the adaptive display device, thereby improving the accuracy and speed of data transmission.

Fig. 6 illustrates a flow 600 of some embodiments of a data transmission method according to the present disclosure. The data transmission method comprises the following steps:

Step 601, a media signal to be transmitted is acquired.

In some embodiments, the host device may obtain the media signal to be sent from the storage terminal through a wired connection or a wireless connection. The storage terminal may be a terminal for storing the media signal to be transmitted. The media signal to be transmitted may be a media signal in a first video format. The first video format may be an HDMI format. The media signal may include, but is not limited to, at least one of: audio signals and video signals.

It should be noted that the wireless connection may include, but is not limited to, 3G/4G connection, wiFi connection, bluetooth connection, wiMAX connection, zigbee connection, UWB (ultra wideband) connection, and other now known or later developed wireless connection.

Step 602, a list of device identifiers is obtained from a display device via a device patch cord.

In some embodiments, the host device may obtain the list of device identifiers from the display device via a device patch cord. Wherein the list of device identifiers may uniquely identify a display device. The list of device identifiers may include, but is not limited to, at least one of: the device identifies the signal. The device identification signal may characterize device type information of the display device. The above device type information may be information characterizing "adapted display device" or information characterizing "non-adapted display device".

Step 603, performing identification processing on the device identifier list to obtain an identification result.

In some embodiments, the host device may perform an identification process on the device identifier list to obtain an identification result. The identifying the device identifier list to obtain an identifying result may be: and when the equipment type information of the equipment identification signal characterization included in the equipment identifier list is the information of the equipment characterization of the 'adapting display equipment', determining the information of the characterization of the 'identification success' as a recognition result, and when the equipment type information of the equipment identification signal characterization included in the equipment identifier list is the information of the characterization of the 'non-adapting display equipment', determining the information of the characterization of the 'identification failure' as a recognition result.

In step 604, in response to determining that the recognition result meets a preset recognition condition, the media signal to be transmitted and preset transmission mode switching information are transmitted to the display device.

In some embodiments, the host device may send the media signal to be sent and preset transmission mode switching information to the display device in response to determining that the identification result satisfies a preset identification condition. The host device may identify the display device as an adaptive display device, send, through a bypass control circuit included in an audio/video signal conversion module included in the host device, a media signal in a first video format to the display device through the device patch cord via a first communication protocol, and then send a preset transmission mode switching (DDC) command to the adaptive display device to control the audio/video signal conversion module included in the adaptive display device to be configured to receive the first video format. The preset recognition condition may be that the recognition result is information indicating "recognition success". The transmission mode switching information to be set may indicate that the host device wants the display device to receive the media signal in the first video format. The first communication protocol may be HDMI protocol.

Optionally, the above host device may further perform the steps of:

And a first step of receiving a device transfer signal through the device transfer line in response to determining that the identification result does not meet the preset identification condition. Wherein, the device transfer signal may include, but is not limited to, at least one of the following: a Communication Confirmation (CC) signal and a wire identification signal. The wire identification signal may be used to characterize the wire type information of the equipment patch cord as information characterizing "custom wires".

And secondly, checking the equipment switching signal to obtain a checking result. The foregoing performing a verification process on the device switching signal to obtain a verification result may be: and when the equipment switching signal comprises the wire identification signal, determining information representing 'successful inspection' as the verification result. And when the equipment switching signal does not comprise the wire identification signal, determining information representing 'inspection failure' as the inspection result.

And thirdly, determining the sequence information of the communication interface based on the communication confirmation signal included in the equipment switching signal in response to determining that the verification result meets the preset verification condition. The communication interface sequence information can be determined through a preset interface communication protocol. The preset verification condition may be that the verification result is information indicating "verification success".

As an example, the above-mentioned preset interface communication protocol may be a CC (Configuration Channel ) protocol.

And a fourth step of transmitting the media signal to be transmitted and the preset transmission mode switching information to a display device based on the communication interface sequence information. The host device may send a media signal in a first video format to the display device through a bypass control circuit included in an audio/video signal conversion module included in the host device via a first communication protocol through the device patch cord, and then may send a preset transmission mode switching (DDC) command to the adaptive display device to control the audio/video signal conversion module included in the adaptive display device to be configured to receive the first video format.

Therefore, under the condition that the host is connected with the non-adaptive display device, the connected display device is determined to be provided with a media interface (HDMI) only to transmit the media signal in the first video format by identifying the wire identification signal on the device switching wire, so that the host device can directly send the media signal in the first video format to the display device without converting the media signal in the first video format into the media signal in the second video format, and the accuracy and the speed of data transmission can be improved.

Optionally, the audio/video signal conversion module included in the display device may receive the media signal to be sent through the device patch cord in response to receiving the media signal to be sent and the preset transmission mode switching information. Therefore, the audio/video signal conversion module included in the display device may receive the media signal in the first video format sent by the host device directly through the device patch cord in response to receiving the media signal to be sent and the preset transmission mode switching information.

Optionally, the audio/video signal conversion module included in the display device may further perform signal conversion processing on the media signal to be sent to obtain a display signal to be sent, and send the display signal to be sent to a display. The display signal to be sent may be, but is not limited to, at least one of the following: MIPI signals or LVDS signals. The audio/video signal conversion module can send the display signal to be sent to a display in a wired connection or wireless connection mode. The display may be a display for displaying the signal to be transmitted.

Optionally, the host device may further perform signal conversion processing on the media signal to be sent to obtain a digital signal to be sent, and send the digital signal to be sent to the display device in response to determining that the verification result does not meet the preset verification condition. The audio/video signal conversion module comprises a first video format to second video format module, and the first video format to second video format module is used for converting the media signal to be sent to obtain a digital signal to be sent, and then the digital signal to be sent can be sent to the display device through the device patch cord. Here, the digital signal to be transmitted may be a media signal of the second video format. The second video format may be a DP format.

According to one or more embodiments of the present invention, a two-way switch (ALT) HDMI and DP mode can be implemented in a single port of a head-mounted display device host and head-mounted glasses, so that a host device having an HDMI function can be directly connected to a USB Type-C connector or a magnetic connector of the head-mounted glasses, and HDMI signals can be transmitted through a simple connection line without format conversion, connector adapter or hardware protection device, thereby reducing the use cost of customers. The host equipment does not need the format conversion from HDMI to DP, can reduce the cost, reduce the heat generated by signal conversion, and reduce the layout area of the PCB (Printed Circuit Board ). Thus, one or more embodiments of the present disclosure may increase the endurance of the machine. According to the related experimental results, for a host device with a battery capacity of 5000mAh (MILLIAMPERE HOUR milliamp hours), when the power consumption of the head-mounted glasses is about 2w (watts), the duration of continuously playing the video increases by about 1.5 hours.

Fig. 7 illustrates a product schematic diagram of some embodiments of a data transmission method according to the present disclosure. As shown in fig. 7, a schematic structural diagram of a particular product is shown, including 1-5 cases, in accordance with one or more embodiments of the present invention. The 1 st case is with standard double-end TYPE-C line, when display device inserts host computer equipment through the line, host computer equipment can discern display device's exclusive ID (Identity document, identification number) number, and the host computer box can initiatively switch into HDMI output this moment (the HDMI of host computer box changes the chip of DP and switches into direct mode) to inform head-mounted glasses to switch into HDMI input, realize that glasses normal display and data communication. The 2 nd case is with standard double-end TYPE-C line, when display device inserts host computer equipment through the line, and the exclusive ID number of display device is not discerned to the host computer equipment, and host computer equipment keeps default standard TYPE-C display protocol to show and signal communication with display device this moment. In case 3, with the customized device patch cord according to one or more embodiments of the present invention, when TYPE-C is inserted into the host device, a specific IO (Input/Output) interface on the host device is connected high, and at this time, the host device switches to a standard HDMI Output, and at the same time, the line sequence of the HDMI Output is adjusted by implementing the positive and negative plug identification of the TYPE-C interface through the CC signal, so as to implement handshaking and display. The 4 th condition is with standard double-end TYPE-C line, inserts host computer equipment through double-end TYPE-C line when display device, and host computer equipment and display device can keep standard TYPE-C to show the agreement and communicate and show this moment. In the 5 th case, when the TYPE-C interface is plugged into the display device by using the custom equipment patch cord of one or more embodiments of the invention, a specific IO interface of the display device is connected high, the display device is switched to be standard HDMI input, and meanwhile, the line sequence of HDMI output is adjusted by implementing positive and negative plug identification of the TYPE-C interface through CC1, so that handshake and display are realized.

The foregoing description is only of the preferred embodiments of the present disclosure and description of the principles of the technology being employed. It will be appreciated by those skilled in the art that the scope of the invention in the embodiments of the present disclosure is not limited to the specific combination of the above technical features, but encompasses other technical features formed by any combination of the above technical features or their equivalents without departing from the spirit of the invention. Such as the above-described features, are mutually substituted with (but not limited to) the features having similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A host device, the host device comprising: host computer digital interface, audio/video signal conversion module and host computer chip, wherein:

The host device is in communication connection with the display device through the host digital interface, wherein the host chip is used for controlling the output of media signals in HDMI format, and the host digital interface is used for outputting media signals to the display device;

The host chip included in the host device is in communication connection with the audio/video signal conversion module included in the host device, wherein the audio/video signal conversion module included in the host device is configured to: receiving a device identification signal of the display device and switching an output video format of a media signal according to the device identification signal;

The audio/video signal conversion module included in the host device includes: the device comprises an HDMI format-to-DP format module and a bypass control circuit, wherein the bypass control circuit is used for directly outputting the media signal in the HDMI format to the display device;

wherein the host device further comprises: an equipment patch cord;

The host device obtains a device identifier list from a display device through a device patch cord, wherein the device identifier list uniquely identifies a display device, and the device identifier list comprises: a device identification signal characterizing device type information of the display device, the device type information being information characterizing "adapted display device" or information characterizing "non-adapted display device";

The host digital interface is a USB Type-C (Universal Serial Bus Type-C, universal serial bus Type C) interface;

The display device includes: a display interface and an audio/video signal conversion module;

the display interface is: USB Type-C interface or HDMI interface;

the audio/video signal conversion module is used for carrying out signal conversion processing on the media signal in the HDMI format to obtain a display signal to be sent;

the display signal is an MIPI signal or an LVDS signal;

the host chip included in the host device is in communication connection with the display interface included in the display device through the host digital interface and the device patch cord;

The display device comprises a display interface which is in communication connection with an audio/video signal conversion module, wherein the display interface is used for receiving media signals;

The host chip is configured to: in response to determining that the device identification signal received from the audio-video signal conversion module included in the host device meets a preset identification condition, identifying the display device as an adaptive display device, and sending transmission mode switching information to control the audio-video signal conversion module included in the adaptive display device to receive media signals in an HDMI format, directly sending the media signals in the HDMI format to the adaptive display device through the device patch cord by the bypass control circuit through a first communication protocol, wherein the first communication protocol is used for transmitting the media signals in the HDMI format, and the preset identification condition is that device type information represented by the device identification signal is information representing "adaptive display device";

The host chip is further configured to: and under the condition of being connected with the non-adaptive display equipment, determining that the connected display equipment is only provided with the HDMI interface to transmit the media signal in the first video format by identifying the wire identification signal on the equipment switching line, and directly transmitting the media signal in the HDMI format to the display equipment through the bypass control circuit.

2. The host device according to claim 1, wherein a host chip included in the host device is communicatively connected to an audio/video signal conversion module included in the host device, wherein the host chip is configured to control the audio/video signal conversion module included in the host device, and the audio/video signal conversion module included in the host device is configured to convert the media signal in the HDMI format into the media signal in the DP format;

The host chip is configured to: in response to determining that the device identification signal received from the audio-video signal conversion module included in the host device does not meet the preset identification condition, identifying the display device as a non-adaptive display device, controlling the audio-video signal conversion module included in the host device to convert a media signal in an HDMI format into a media signal in a DP format, and transmitting the media signal in the DP format to the non-adaptive display device through the device patch cord via a second communication protocol, wherein the second communication protocol is used for transmitting the media signal in the DP format.

3. The host device of claim 1, wherein the host digital interface comprises: a downstream communication interface pin and a downstream data interface pin set, the device patch cord comprising: a digital upstream interface, the digital upstream interface comprising: an upstream communication interface pin and a set of upstream data interface pins, wherein:

The host digital interface comprises a downlink communication interface pin which is in communication connection with an uplink communication interface pin which is arranged on the equipment patch cord;

The digital uplink interface comprises an uplink communication interface pin which is provided with a pull-up resistor, wherein the uplink communication interface pin is used for generating a communication confirmation signal in a connection state;

The host digital interface comprises downlink data interface pins in a downlink data interface pin set, which are in one-to-one communication connection with uplink data interface pins in an uplink data interface pin set, which are included in the equipment patch cord, wherein each downlink data interface pin in the downlink data interface pin set is used for sending media signals, and each uplink data interface pin in the uplink data interface pin set is used for receiving and transmitting media signals.

4. The host device of claim 3, wherein the host digital interface further comprises: the downlink identification interface pin, the digital uplink interface further comprises: the uplink identification interface pin set and the uplink identification pull-up resistor, wherein:

the uplink identification interface pins in the uplink identification interface pin set are in communication connection with each other and then are in communication connection with the uplink identification pull-up resistor, wherein each uplink identification interface pin in the uplink identification interface pin set and the uplink identification pull-up resistor are used for generating a wire identification signal in a connection state;

The downlink identification interface pin is provided with a series resistor and a pull-down resistor, wherein the downlink identification interface pin is used for receiving the wire identification signal;

the downlink identification interface pin is in communication connection with the uplink identification interface pin set through the series resistor and the uplink identification pull-up resistor;

the host device includes an audio/video signal conversion module configured to: and in response to receiving the wire identification signal, transmitting the media signal in the HDMI format to the display device through the device patch cord by the first communication protocol according to the communication acknowledgement signal.

5. A head-mounted display device coupled to the host device of claim 1, comprising: display device and equipment patch cord, wherein, display device includes: and the display digital interface and audio/video signal conversion module, and the equipment patch cord comprises: a digital upstream interface, wherein:

the display equipment is in communication connection with the host equipment through the equipment patch cord;

The display device comprises a display digital interface in communication connection with a digital uplink interface comprised by the device patch cord, wherein the display digital interface is configured to: receiving a media signal in an HDMI format from the host device in response to identifying a wire identification signal from a digital upstream interface included in the device patch cord;

The display device comprises a display digital interface and an audio/video signal conversion module, wherein the display digital interface is in communication connection with the audio/video signal conversion module, and the audio/video signal conversion module is used for converting a media signal into a display signal;

the display signal is an MIPI or LVDS signal;

the equipment patch cord is a data line with one end being an USB Type-C interface and the other end being an HDMI interface.

6. The head mounted display device of claim 5, wherein the display digital interface comprises: the downlink identification interface pin, the digital uplink interface includes: the uplink identification interface pin set and the uplink identification pull-up resistor, wherein:

The downlink identification interface pin is provided with a series resistor and a pull-down resistor, wherein the downlink identification interface pin is used for identifying the wire identification signal;

And the downlink identification interface pin is in communication connection with the uplink identification interface pin set through the series resistor and the uplink identification pull-up resistor.

7. The head mounted display device of claim 6, wherein the display digital interface further comprises: the downlink communication interface pin, the digital uplink interface further includes: an upstream communication interface pin, wherein:

the display digital interface comprises a downlink communication interface pin which is in communication connection with an uplink communication interface pin which is arranged in the digital uplink interface, wherein the downlink communication interface pin is used for identifying the communication confirmation signal;

The audio-video signal conversion module included in the display device is configured to: and receiving a media signal in an HDMI format from the host device through the device patch cord according to the communication confirmation signal in response to receiving the wire identification signal.

8. A data transmission method applied to the host device according to any one of claims 1 to 4 or the head-mounted display device according to any one of claims 5 to 7, comprising:

Acquiring a media signal to be transmitted;

acquiring a device identifier list from a display device through a device patch cord;

Performing identification processing on the equipment identifier list to obtain an identification result;

and transmitting the media signal to be transmitted and preset transmission mode switching information to display equipment in response to the fact that the identification result meets the preset identification condition.

9. The method of claim 8, wherein the method further comprises:

And receiving, by the device patch cord, a device patch signal in response to determining that the identification result does not satisfy the preset identification condition, wherein the device patch signal includes: a communication confirmation signal;

performing verification processing on the equipment switching signal to obtain a verification result;

determining communication interface sequence information based on a communication confirmation signal included in the equipment transfer signal in response to determining that the verification result meets a preset verification condition;

And transmitting the media signal to be transmitted and the preset transmission mode switching information to display equipment based on the communication interface sequence information.

10. The method of claim 9, wherein the method further comprises:

And the audio and video signal conversion module is used for receiving the media signal to be sent through the equipment patch cord in response to receiving the media signal to be sent and the preset transmission mode switching information.

11. The method of claim 9, wherein the method further comprises:

And responding to the fact that the verification result does not meet the preset verification condition, performing signal conversion processing on the media signal to be sent to obtain a digital signal to be sent, and sending the digital signal to be sent to the display device.