CN110062186B - Data transmission method and system and touch display - Google Patents

Data transmission method and system and touch display Download PDF

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Publication number
CN110062186B
CN110062186B CN201910458541.1A CN201910458541A CN110062186B CN 110062186 B CN110062186 B CN 110062186B CN 201910458541 A CN201910458541 A CN 201910458541A CN 110062186 B CN110062186 B CN 110062186B
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interface
type
audio
usb
display
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CN110062186A (en
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李岩
白冠珏
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Ke Technology
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Ke Technology
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/4104—Peripherals receiving signals from specially adapted client devices
    • H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
    • H04N21/43635—HDMI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Databases & Information Systems (AREA)
  • Human Computer Interaction (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

The invention provides a data transmission method, a system and a touch display, wherein the data transmission method comprises the following steps: under the condition that a first USB Type-C interface of a display is connected with a second USB Type-C interface of an external device, determining that the second USB Type-C interface does not support a Type C optional mode, wherein the first USB Type-C interface supports the Type C optional mode; audio and video data from the second USB Type-C interface is transmitted through the first audio and video transmission channel, and the screen projection from the external equipment to the display can be realized through the interface which does not support the Type-C selectable mode.

Description

Data transmission method and system and touch display
Technical Field
The invention relates to the technical field of data transmission, in particular to a data transmission method and system and a touch display.
Background
The USB Type-C has become one of the main interfaces of market smart phones and notebooks due to the advantages of stronger function, double-sided pluggable capability, strong power supply capability and the like. The USB Type-C interface full function can support the USB Type-C optional mode, and the higher video resolution ratio is transmitted. However, not all USB Type-C interfaces in the market support full functions, and many USB Type-C interfaces only support USB functions and transmit audio and video through a USB protocol.
In order to seek better visual experience, the demand of projecting the screen of the mobile phone onto the display is increasingly strong. The display is used as a video display device, and in order to meet the video display requirement of the USB Type-C interface device, displays supporting the USB Type-C interface are also increasing, and generally support video display in the USB Type-C selectable mode. The interface device which does not support the USB Type-C selectable mode cannot realize screen projection, and inconvenience is brought to a user.
Disclosure of Invention
In view of this, embodiments of the present invention provide a data transmission method, a data transmission system, and a touch display, which enable an interface that does not support a Type-C selectable mode to also implement screen projection from an external device to the display.
According to a first aspect of the embodiments of the present invention, there is provided a data transmission method, including: under the condition that a first USB Type-C interface of a display is connected with a second USB Type-C interface of an external device, determining that the second USB Type-C interface does not support a Type-C optional mode, wherein the first USB Type-C interface supports the Type-C optional mode; and audio and video data from the second USB Type-C interface are transmitted through the first audio and video transmission channel.
In an embodiment of the present invention, the data transmission method further includes: determining that the second USB interface supports a Type-C optional mode; and adopting a Type-C optional mode to transmit audio and video data through a second audio and video transmission channel.
In an embodiment of the present invention, the first audio/video transmission channel is an HDMI channel, where the transmitting the audio/video data from the second USB Type-C interface through the first audio/video transmission channel includes: switching the USB channel into an HDMI channel; decoding the audio and video data through a USB-HDMI converter; and receiving the decoded audio and video data sent by the USB-HDMI converter through the HDMI interface.
In an embodiment of the present invention, the display is a touch display, and the data transmission method further includes: receiving touch operation input by a user on a touch display; generating a touch instruction according to the touch operation; and sending the touch instruction to the external equipment through the USB-HDMI converter.
In an embodiment of the present invention, the Type-C selectable mode is a DP selectable mode, and the second audio/video transmission channel is a DP channel, where the transmitting audio/video data through the second audio/video transmission channel includes: and transmitting audio and video data through the DP channel.
In an embodiment of the present invention, the display is a touch display, and the data transmission method further includes: receiving touch operation input by a user on a touch display; generating a touch instruction according to the touch operation; and sending the touch instruction to the external equipment through the USB channel.
According to a second aspect of the embodiments of the present invention, there is provided a data transmission system including: the device comprises a determining module, a judging module and a judging module, wherein the determining module is used for determining that a second USB Type-C interface does not support a Type-C optional mode under the condition that a first USB Type-C interface of a display is connected with the second USB Type-C interface of an external device, and the first USB Type-C interface supports the Type-C optional mode; and the transmission module is used for transmitting the audio and video data from the second USB Type-C interface through the first audio and video transmission channel.
According to a third aspect of the embodiments of the present invention, there is provided a touch display, including: the first USB Type-C interface supports a Type-C optional mode and is used for being connected with a second USB Type-C interface of external equipment; the control chip is used for determining that the second USB Type-C interface does not support the Type-C optional mode under the condition that the first USB Type-C interface of the display is connected with the second USB Type-C interface of the external device; the USB-HDMI converter is used for receiving audio and video data from the second USB Type-C interface; decoding audio and video data; the decoded audio and video data are transmitted to the control chip through the HDMI interface; a display screen for presenting video data; the touch control panel is used for generating a touch control instruction according to touch control operation input by a user; the USB-HDMI converter is further used for sending a touch instruction to the external device.
In an embodiment of the present invention, the control chip is further configured to determine that the second USB interface supports a Type-C optional mode, and transmit audio and video data through the second audio and video transmission channel by using the Type-C optional mode.
According to a fourth aspect of embodiments of the present invention, there is provided a computer-readable storage medium having stored thereon computer-executable instructions that, when executed by a processor, implement the data transmission method as described above.
According to the technical scheme provided by the embodiment of the invention, under the condition that the first USB Type-C interface of the display is connected with the second USB Type-C interface of the external device, the second USB Type-C interface is determined not to support the Type-C optional mode; under the condition that the first USB Type-C interface supports the Type-C optional mode and the second USB Type-C interface does not support the Type-C optional mode, the first audio and video transmission channel is selected to transmit audio and video data from the second USB Type-C interface, the Type-C optional mode and the USB function of the USB Type-C interface can be simultaneously supported, the interface which does not support the Type-C optional mode can also achieve screen projection from external equipment to a display, and therefore more types of equipment can project screens to the display, and user experience is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a data transmission method according to an embodiment of the present invention.
Fig. 2 is a schematic flow chart of a data transmission method according to another embodiment of the present invention.
Fig. 3 is a schematic flow chart of a data transmission method according to another embodiment of the present invention.
Fig. 4 is a block diagram of a data transmission system according to an embodiment of the present invention.
Fig. 5 is a block diagram of a touch display according to an embodiment of the invention.
Fig. 6 is a block diagram of a touch display according to another embodiment of the invention.
Fig. 7 is a schematic control flow diagram of an audio/video data transmission channel and a touch command return channel of the touch display shown in fig. 6.
Fig. 8 is a block diagram of a data transmission system according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The touch display can enable a user to operate the host machine by only lightly touching icons or characters on a computer display screen with fingers, so that the operation of a keyboard and a mouse is avoided, the man-machine interaction is more straightforward, and the touch display can be applied to scenes such as electronic games, song ordering, dish ordering, multimedia teaching and the like. In brief, a touch display is a display having a touch function and a touch screen mounted on the display, and the touch screen may be classified into a resistive type, a capacitive type, an acoustic wave type, an infrared type, and the like. The data transmission method provided by the invention can be implemented by a display device with a touch function, such as a mobile phone, a tablet computer, a touch display and the like, and the data transmission method is not limited by the invention.
Fig. 1 is a schematic flow chart of a data transmission method according to an embodiment of the present invention. The method may be performed by a computer device (e.g., a display). As shown in fig. 1, the method includes the following.
S110: and under the condition that the first USB Type-C interface of the display is connected with the second USB Type-C interface of the external device, determining that the second USB Type-C interface does not support the Type-C optional mode.
The first USB Type-C interface supports a Type-C optional mode. Specifically, when the second USB Type-C interface is inserted into the first USB Type-C interface, namely the external device is connected with the display, whether the second USB Type-C interface of the external device supports the Type-C selectable mode or not is determined. The Type-C option Mode may also be referred to as a Type-C alternative Mode (Alternate Mode, Alt Mode), and includes a DP option Mode (DisplayPort Alt Mode), an HDMI option Mode (HDMI Alt Mode), and the like.
S120: and audio and video data from the second USB Type-C interface are transmitted through the first audio and video transmission channel.
And when the second USB Type-C interface of the external equipment does not support the Type-C optional mode, selecting the first audio and video transmission channel to transmit audio and video data from the external equipment. The first audio/video transmission channel may be a DVI channel, an HDMI channel, or the like, which is not specifically limited in this respect.
According to the technical scheme provided by the embodiment of the invention, under the condition that the first USB Type-C interface of the display is connected with the second USB Type-C interface of the external device, the second USB Type-C interface is determined not to support the Type-C optional mode; under the condition that the first USB Type-C interface supports the Type-C optional mode and the second USB Type-C interface does not support the Type-C optional mode, the first audio and video transmission channel is selected to transmit audio and video data from the second USB Type-C interface, the Type-C optional mode and the USB function of the USB Type-C interface can be simultaneously supported, the interface which does not support the Type-C optional mode can also achieve screen projection from external equipment to a display, and therefore more types of equipment can project screens to the display, and user experience is improved.
In another embodiment of the present invention, the data transmission method further includes: determining that the second USB Type-C interface supports a Type-C optional mode; and adopting a Type-C optional mode to transmit audio and video data through a second audio and video transmission channel.
Specifically, when a second USBType-C interface of the external device supports a Type-C optional mode, audio and video data from the external device are transmitted through a second audio and video transmission channel corresponding to the Type-C optional mode. For example, when the Type-C optional mode is the DP optional mode, the second audio/video transmission channel is a DP channel. It is to be understood that the above description is intended to be illustrative, and not restrictive.
In another embodiment of the present invention, the first audio/video transmission channel is an HDMI channel, where the transmitting the audio/video data from the second USB Type-C interface through the first audio/video transmission channel includes: switching the USB channel into an HDMI channel; decoding the audio and video data through a USB-HDMI converter; and receiving the decoded audio and video data sent by the USB-HDMI converter through the HDMI interface.
The USB function supports a USB channel and an HDMI channel, the USB channel can realize data transmission, and the HDMI channel can realize transmission and screen projection of audio and video data. For example, the USB channel is a default channel, and when the USB Type-C interface of the display supports the DP option mode and the USB Type-C interface of the external device does not support the DP option mode to transmit the audio/video data, the default USB channel is switched to the HDMI channel, and the audio/video data is transmitted through the HDMI channel.
The USB-HDMI converter is connected with the USB interface and the HDMI interface, and specifically, the USB-HDMI converter receives and decodes audio and video data from external equipment through the USB interface, and sends the decoded audio and video data to the control chip through the HDMI interface to realize an interface conversion function. The USB-HDMI converter may be implemented by software, hardware or firmware, which is not limited by the invention. Furthermore, the control chip can control the display screen to display video data, control the loudspeaker to play audio data and the like.
In another embodiment of the present invention, the display is a touch display, and the data transmission method further includes: receiving touch operation input by a user on a touch display; generating a touch instruction according to the touch operation; and sending the touch instruction to the external equipment through the USB-HDMI converter.
Specifically, after receiving the audio/video data decoded by the USB-HDMI converter through the HDMI channel, the user may also receive a touch operation input by the user on the touch display, and the user may adjust the volume of the video through the touch operation, fast forward, rewind, pause, and the like, which is not limited in this disclosure. Further, a touch instruction may be generated through the touch operation, the touch instruction may be sent to an external device through the USB-HDMI converter, and the external device executes the touch instruction. For example, the user clicks a video pause key on the touch display, the touch display generates a video pause instruction and transmits the video pause instruction to the external device, and the external device receives the video pause instruction and controls video pause on the screen. By generating the touch instruction according to the touch operation and sending the touch instruction to the external equipment through the USB-HDMI converter, a user can realize the inverse control of the external equipment through the operation on the touch display, the operating area of the external equipment is expanded, and better control experience is brought to the user.
In another embodiment of the present invention, the Type-C selectable mode is a DP selectable mode, and the second audio/video transmission channel is a DP channel, where the transmitting audio/video data through the second audio/video transmission channel includes: and transmitting audio and video data through the DP channel.
Specifically, under the condition that a first USB Type-C interface and a second USB Type-C both support a DP optional mode, a DP channel is selected to transmit audio and video data, higher video resolution can be transmitted, a better visual effect is brought to a user, and user experience is improved.
In another embodiment of the present invention, the display is a touch display, and the data transmission method further includes: receiving touch operation input by a user on a touch display; generating a touch instruction according to the touch operation; and sending the touch instruction to the external equipment through the USB channel.
Specifically, when the DP channel is selected to transmit audio and video data, and therefore screen projection from the external device to the display in the DP selectable mode is supported, a touch instruction can be transmitted back to the external device through the USB channel, a user can realize counter control of the external device through operation on the touch display, the operating area of the external device is expanded, and better control experience is brought to the user.
Fig. 2 is a schematic flow chart of a data transmission method according to another embodiment of the present invention. The method may be performed by a computer device (e.g., a touch display). As shown in fig. 2, the method includes the following.
S210: under the condition that a first USB Type-C interface of the touch display is connected with a second USB Type-C interface of the external device, the second USB Type-C interface is determined not to support the DP optional mode.
The USB Type-C interface of the touch display supports the DP optional mode, and the USB Type-C interface of the external device does not support the DP optional mode.
S220: and switching the USB channel into the HDMI channel.
S230: and decoding the audio and video data through the USB-HDMI converter.
Specifically, the USB-HDMI converter receives and decodes audio/video data from an external device, and transmits the decoded audio/video data to the HDMI interface.
S240: and receiving the decoded audio and video data sent by the USB-HDMI converter through the HDMI interface.
Specifically, the control module can receive the decoded audio and video data through the HDMI interface, and control the display screen to display the video data, control the speaker to play the audio data, and the like.
S250: and receiving touch operation input by a user on the touch display.
S260: and generating a touch instruction according to the touch operation.
S270: and sending a touch instruction to the external equipment through the USB-HDMI converter.
According to the technical scheme provided by the embodiment of the invention, under the condition that the USB Type-C interface of the touch display supports the DP optional mode and the USB Type-C interface of the external equipment does not support the DP optional mode, the audio and video data are decoded through the USB-HDMI converter, and the decoded audio and video data are received through the HDMI interface, so that screen projection from the external equipment which does not support the DP optional mode to the touch display can be realized, more types of equipment are supported to be projected to the display, the display area of the external equipment is expanded, and the user experience is improved. In addition, by receiving the touch operation of the user on the touch display and generating the touch instruction and returning the touch instruction to the external device through the USB-HDMI converter, the user can realize the inverse control of the external device through the operation on the touch display, the operating area of the external device is expanded, and better control experience is brought to the user.
Fig. 3 is a schematic flow chart of a data transmission method according to another embodiment of the present invention. The method may be performed by a computer device (e.g., a touch display). As shown in fig. 3, the method includes the following.
S310: under the condition that a first USB Type-C interface of the touch display is connected with a second USB Type-C interface of the external device, it is determined that the second USB Type-C interface supports a Type-C DP optional mode.
The first USB Type-C interface and the second USB Type-C interface both support a Type-C DP optional mode.
S320: and transmitting audio and video data through the DP channel.
Specifically, under the condition that a first USB Type-C interface and a second USB Type-C interface both support a Type-C DP optional mode, a DP channel is selected to transmit audio and video data.
S330: and receiving touch operation input by a user on the touch display.
S340: and generating a touch instruction according to the touch operation.
S350: and sending a touch instruction to the external equipment through the USB channel.
According to the technical scheme provided by the embodiment of the invention, the DP channel is selected to transmit audio and video data under the condition that the USB Type-C interfaces of the touch display and the external device both support the DP optional mode, so that the screen projection from the external device supporting the DP optional mode to the touch display can be realized, the display area of the external device is expanded, the DP channel supports higher video resolution, better visual experience is brought to a user, in addition, the touch operation of the user on the touch display is received and a touch instruction is generated, and the touch instruction is returned to the external device through the USB channel, so that the user can realize the counter control of the external device through the operation on the touch display, the operation area of the external device is expanded, and better control experience is brought to the user.
All the above-mentioned optional technical solutions can be combined arbitrarily to form the optional embodiments of the present invention, and are not described herein again.
The following are embodiments of the apparatus of the present invention that may be used to perform embodiments of the method of the present invention. For details which are not disclosed in the embodiments of the apparatus of the present invention, reference is made to the embodiments of the method of the present invention.
Fig. 4 is a block diagram of a data transmission system according to an embodiment of the present invention. As shown in fig. 4, the data transmission system 400 includes:
the determining module 410 is configured to determine that the second USB Type-C interface does not support the Type-C optional mode when the first USB Type-C interface of the display is connected to the second USB Type-C interface of the external device, where the first USB Type-C interface supports the Type-C optional mode.
And the transmission module 420 is configured to transmit the audio and video data from the second USB Type-C interface through the first audio and video transmission channel.
According to the technical scheme provided by the embodiment of the invention, under the condition that the first USB Type-C interface of the display is connected with the second USB Type-C interface of the external device, the second USB Type-C interface is determined not to support the Type-C optional mode; under the condition that the first USB Type-C interface supports the Type-C optional mode and the second USB Type-C interface does not support the Type-C optional mode, the first audio and video transmission channel is selected to transmit audio and video data from the second USB Type-C interface, the Type-C optional mode and the USB function of the USB Type-C interface can be simultaneously supported, the interface which does not support the Type-C optional mode can also achieve screen projection from external equipment to a display, and therefore more types of equipment can project screens to the display, and user experience is improved.
In another embodiment of the present invention, the determining module 410 is further configured to determine that the second USB interface supports a Type-C option mode; the transmission module 420 is further configured to transmit the audio and video data through the second audio and video transmission channel in a Type-C selectable mode.
In another embodiment of the present invention, the first audio/video transmission channel is an HDMI channel, and the data transmission system further includes a switching module 430, configured to switch the USB channel into the HDMI channel; the decoding module 440 is used for decoding the audio and video data through the USB-HDMI converter; and a receiving module 450, configured to receive, through the HDMI interface, the decoded audio/video data sent by the USB-HDMI converter.
In another embodiment of the present invention, the display is a touch display, and the receiving module 450 is further configured to receive a touch operation input by a user on the touch display; the data transmission system further includes a generating module 460, configured to generate a touch instruction according to the touch operation; and a sending module 470, configured to send the touch command to the external device through the USB-HDMI converter.
In another embodiment of the present invention, the Type-C selectable mode is a DP selectable mode, the second audio/video transmission channel is a DP channel, and the transmission module 420 is further configured to transmit audio/video data through the DP channel.
In another embodiment of the present invention, the display is a touch display, and the sending module 470 is further configured to send a touch command to an external device through a USB channel.
The implementation process of the functions and actions of each module in the above device is specifically described in the implementation process of the corresponding step in the above method, and is not described herein again.
Fig. 5 is a block diagram of a touch display according to an embodiment of the invention. As shown in fig. 5, the touch display 500 includes:
the first USB Type-C interface 510 supports a Type-C optional mode and is used for being connected with a second USB Type-C interface of external equipment;
the control chip 520 is configured to determine that the second USB Type-C interface does not support the Type-C optional mode when the first USB Type-C interface of the display is connected to the second USB Type-C interface of the external device;
a USB-HDMI converter 530 for receiving audio and video data from the second USB Type-C interface; decoding audio and video data; the decoded audio and video data are transmitted to the control chip through the HDMI interface;
a display screen 540 for presenting video data;
a Touch Pad (TP) 550, configured to generate a touch instruction according to a touch operation input by a user;
the USB-HDMI converter is further used for sending a touch instruction to the external device.
According to the technical scheme provided by the embodiment of the invention, under the condition that the USB Type-C interface of the touch display supports the DP optional mode and the USB Type-C interface of the external device does not support the DP optional mode, the control chip selects the HDMI channel to transmit the audio and video data, decodes the audio and video data through the USB-HDMI converter, and sends the decoded audio and video data to the control chip through the HDMI interface, so that screen projection from the external device which does not support the DP optional mode to the touch display can be realized, screen projection from more types of devices to the display is supported, the display area of the external device is expanded, and the user experience is improved. In addition, by receiving the touch operation of the user on the touch display and generating the touch instruction, and returning the touch instruction to the external device through the USB-HDMI converter, the user can realize the inverse control of the external device through the operation on the touch display, thereby expanding the operating area of the external device and bringing better control experience to the user.
In another embodiment of the present invention, the control chip 520 is further configured to determine that the second USB interface supports a Type-C optional mode, and transmit audio and video data through the second audio and video transmission channel by using the Type-C optional mode.
In another embodiment of the present invention, the Type-C selectable mode is a DP selectable mode, the second audio/video transmission channel is a DP channel, and the control chip 520 is further configured to transmit audio/video data through the DP channel.
In another embodiment of the present invention, the control chip 520 is further configured to send a touch command to an external device through the USB channel.
Fig. 6 is a block diagram of a touch display according to another embodiment of the invention. The touch display of fig. 6 is an example of the touch display of fig. 5, and detailed descriptions thereof are omitted here as appropriate.
In this embodiment, the control chip may be a display (Monitor, MNT) Module 620, the USB-HDMI converter may be a USB projection Module 630, the display screen may be a liquid Crystal display Module (LCM) 620, and the MNT Module 620 outputs video data by using a Low Voltage Differential Signaling (LVDS) interface and controls the LCM 620 to display the video data. The Type-C selectable mode is a DP selectable mode, the second audio/video transmission channel is a DP channel, where USB pin control is performed through the MNT module 620, and data is transmitted through the DP channel, as shown in fig. 6. The MNT module 620 can implement the video display function of the display, the control interface function, the selection and control of the audio/video transmission channel, and the power control of each module. In the embodiment of the present invention, a system power supply 660 is further included, which supplies power to the MNT module 620, receives a power control signal sent by the MNT module 620, and supplies power to each module of the display. In the embodiment of the present invention, a control flow of the audio/video transmission channel and the touch instruction return channel is shown in fig. 7, and includes the following contents.
710, the first USB Type-C interface 610 defaults to channel two.
720, the external device is plugged into the first USB Type-C interface.
730, preferentially judging whether the second USB Type-C interface of the external equipment supports audio and video transmission. 740 is performed when the second USB Type-C interface supports audio/video transmission, and 750 and 760 are performed when the second USB Type-C interface does not support audio/video transmission.
740, audio and video transmission is supported by the DP function of the first USB Type-C interface, that is, audio and video data is transmitted through the DP channel.
750, the first USB Type-C interface channel is switched to the channel (i.e., HDMI channel), and the TP backhaul channel is switched to the channel (iii), i.e., USB channel.
760 supporting audio and video transmission via the USB function of the first USB Type-C interface.
Fig. 8 is a block diagram of a data transmission system 800 according to an embodiment of the invention.
Referring to fig. 8, system 800 includes a processing component 810 that further includes one or more processors and memory resources, represented by memory 820, for storing instructions, such as applications, that are executable by processing component 810. The application programs stored in memory 820 may include one or more modules that each correspond to a set of instructions. Further, the processing component 810 is configured to execute instructions to perform the data transmission method described above.
The system 800 may also include a power supply component configured to perform power management of the system 800, a wired or wireless network interface configured to connect the system 800 to a network, and an input-output (I/O) interface. The system 800 may operate based on an operating system, such as Windows Server, stored in the memory 820TM，Mac OS XTM，UnixTM，LinuxTM，FreeBSDTMOr the like.
A non-transitory computer readable storage medium having instructions therein which, when executed by a processor of the system 800, enable the system 800 to perform a data transfer method, comprising: under the condition that a first USB Type-C interface of a display is connected with a second USB Type-C interface of an external device, determining that the second USB Type-C interface does not support a Type-C optional mode, wherein the first USB Type-C interface supports the Type-C optional mode; and audio and video data from the second USB Type-C interface are transmitted through the first audio and video transmission channel.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention or a part thereof, which essentially contributes to the prior art, can be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program check codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
It should be noted that the combination of the features in the present application is not limited to the combination described in the claims or the combination described in the embodiments, and all the features described in the present application may be freely combined or combined in any manner unless contradictory to each other.
It should be noted that the above-mentioned embodiments are only specific examples of the present invention, and obviously, the present invention is not limited to the above-mentioned embodiments, and many similar variations exist. All modifications which would occur to one skilled in the art and which are, therefore, directly derived or suggested from the disclosure herein are deemed to be within the scope of the present invention.
It should be understood that the terms such as first, second, etc. used in the embodiments of the present invention are only used for clearly describing the technical solutions of the embodiments of the present invention, and are not used to limit the protection scope of the present invention.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A method of data transmission, comprising:
under the condition that a first USB Type-C interface of a display is connected with a second USB Type-C interface of an external device, the display determines whether the second USB Type-C interface supports a Type-C optional mode, wherein the first USB Type-C interface supports the Type-C optional mode;
when the second USB Type-C interface is determined not to support the Type-C optional mode, the display transmits audio and video data from the second USB Type-C interface through a first audio and video transmission channel;
when the second USB Type-C interface is determined to support the Type-C optional mode, the Type-C optional mode is adopted, the display transmits audio and video data from the second USB Type-C interface through a second audio and video transmission channel, the first audio and video transmission channel is an HDMI channel,
the display transmits audio and video data from the second USB Type-C interface through a first audio and video transmission channel, and the method comprises the following steps:
the display switches a USB channel to the HDMI channel;
the display decodes the audio and video data through a USB-HDMI converter for realizing an interface conversion function; and
and the display receives the decoded audio and video data sent by the USB-HDMI converter through an HDMI interface.
2. The data transmission method of claim 1, wherein the display is a touch display, the data transmission method further comprising:
the display receives touch operation input by a user on the touch display;
the display generates a touch instruction according to the touch operation; and
the display sends the touch instruction to the external device through the USB-HDMI converter.
3. The data transmission method according to claim 1, wherein the Type-C optional mode is a DP optional mode, the second audio/video transmission channel is a DP channel,
wherein, the display transmits the audio and video data through a second audio and video transmission channel, including:
and the display transmits the audio and video data through the DP channel.
4. The data transmission method of claim 3, wherein the display is a touch display, the data transmission method further comprising:
the display receives touch operation input by a user on the touch display;
the display generates a touch instruction according to the touch operation; and
and the display sends the touch instruction to the external equipment through a USB channel.
5. A data transmission system, comprising:
the device comprises a determining module, a judging module and a judging module, wherein the determining module is used for determining whether a second USB Type-C interface of an external device supports a Type-C optional mode or not under the condition that the first USB Type-C interface of a display is connected with the second USB Type-C interface of the external device, and the first USB Type-C interface supports the Type-C optional mode;
the transmission module is used for transmitting audio and video data from the second USB Type-C interface under the condition that the second USB Type-C interface does not support the Type-C optional mode through a first audio and video transmission channel; transmitting audio and video data from the second USB Type-C interface supporting the Type-C optional mode through a second audio and video transmission channel, wherein the first audio and video transmission channel is an HDMI channel,
the transmission module is specifically used for switching a USB channel into the HDMI channel when the second USB Type-C interface does not support a Type-C optional mode; decoding the audio and video data through a USB-HDMI converter for realizing an interface conversion function; and receiving the decoded audio and video data sent by the USB-HDMI converter through an HDMI interface.
6. A touch display, comprising:
the first USB Type-C interface supports a Type-C optional mode and is used for being connected with a second USB Type-C interface of external equipment;
the control chip is used for determining whether the second USB Type-C interface supports a Type-C optional mode or not under the condition that the first USB Type-C interface of the display is connected with the second USB Type-C interface of the external equipment;
the USB-HDMI converter is used for receiving audio and video data from the second USB Type-C interface; decoding the audio and video data; the interface conversion function is realized; the decoded audio and video data are transmitted to the control chip through the HDMI interface;
a display screen for presenting video data;
the touch control panel is used for generating a touch control instruction according to touch control operation input by a user;
the USB-HDMI converter is further used for sending the touch instruction to the external device.
7. The touch display of claim 6, wherein the control chip is further configured to determine that the second USB Type-C interface supports the Type-C option mode, and transmit the audio and video data through a second audio and video transmission channel by using the Type-C option mode.
8. A computer-readable storage medium having computer-executable instructions stored thereon, which when executed by a processor implement the data transmission method of any one of claims 1 to 4.
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