CN107948569A - Realize the method and device of wired biography screen - Google Patents

Realize the method and device of wired biography screen Download PDF

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Publication number
CN107948569A
CN107948569A CN201611048840.0A CN201611048840A CN107948569A CN 107948569 A CN107948569 A CN 107948569A CN 201611048840 A CN201611048840 A CN 201611048840A CN 107948569 A CN107948569 A CN 107948569A
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CN
China
Prior art keywords
port
equipment
usb interface
audio
local terminal
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Granted
Application number
CN201611048840.0A
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Chinese (zh)
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CN107948569B (en
Inventor
庞远杨
侯旻翔
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Guangzhou Shiyuan Electronics Thecnology Co Ltd
Guangzhou Shirui Electronics Co Ltd
Original Assignee
Guangzhou Shiyuan Electronics Thecnology Co Ltd
Guangzhou Shirui Electronics Co Ltd
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Application filed by Guangzhou Shiyuan Electronics Thecnology Co Ltd, Guangzhou Shirui Electronics Co Ltd filed Critical Guangzhou Shiyuan Electronics Thecnology Co Ltd
Priority to PCT/CN2017/103472 priority Critical patent/WO2018090724A1/en
Publication of CN107948569A publication Critical patent/CN107948569A/en
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Classifications

    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • 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 or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
    • 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 or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
    • H04N21/43632—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or 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 or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
    • H04N21/43632—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network involving a wired protocol, e.g. IEEE 1394
    • H04N21/43635—HDMI

Abstract

The present invention relates to the method and device for realizing wired biography screen.The described method includes：One embedded unit for being used for realization biography screen is set in local terminal in advance, there is provided have the first USB interface；By embedded unit some communication protocol ports are provided to the first equipment；Establish local terminal by the communication protocol port, the first USB interface and be connected with the usb communication of the first equipment；Detect that the first USB interface has the information from the first equipment, the port for transmitting the information is detected by embedded unit, if the port for being used for transmission audio, video data, then the information audio, video data is identified as and is transmitted to local terminal MCU；Obtain the manipulation signal to the first equipment that local terminal detects and be sent to embedded unit；The manipulation signal adaptation is arrived by embedded unit and is used for transmission the port for manipulating signal, and is sent by first USB interface to the first equipment.The present invention can simplify wiring when passing screen, reduce to terminal block difficulty.

Description

Realize the method and device of wired biography screen
Technical field
The present invention relates to technical field of data transmission, more particularly to the method and device for realizing wired biography screen.
Background technology
Pass screen and be achieved in that computer etc. shows screen page and voice data of the source device by intercepting system, and send To display device, display device decodes and shows and play the picture and sound that send over.Pass screen be frequently used in meeting or Person's teaching field, user needs to project the audio-video signal of computer to carry out on the liquid crystal electronic whiteboard or projector of large-size screen monitors Show, the audio, video data on computer is sent to display device by corresponding data cable.But traditional biography screen display pattern In, display device only as information displaying function, without reception user operation instruction and returns the function of display source, not side Just user does demonstration operation.
Based on this, in based on the biography screen pattern for touching screen display device, it is proposed that the touch for detecting display device Signal feedback to the computer end is manipulated, it is corresponding, need increase by one to be used for transmission control between computer and the display device The connecting line of signal.Therefore need to need between computer and display device two or more than two connecting line (HDMI wire+USB line/ RS232 lines, VGA line+tone frequency channel wire+USB line or RS232 lines etc.) it could realize.It is complicated in the presence of wiring, will to user's professional standards Ask the problem of higher.
The content of the invention
Based on this, the method and device provided in an embodiment of the present invention for realizing wired biography screen, when can simplify biography screen display Wiring, reduce to terminal block difficulty.
One aspect of the present invention provides the method for realizing wired biography screen, including：
One embedded unit for being used for realization biography screen is set in local terminal in advance, the embedded unit is provided with the first USB Interface, the embedded unit are communicated to connect with local terminal MCU；
The method for realizing wired biography screen includes：
By the embedded unit of local terminal some communication protocol ports, communication protocol port energy are provided to the first equipment Enough general drivings by the first equipment identify；The general driving of first equipment provides the first equipment and standard USB device Between the common communication protocol that communicates, the communication protocol port includes at least：It is used for transmission port and the use of audio, video data In the port of transmission manipulation signal；
Establish local terminal by the communication protocol port, first USB interface and be connected with the usb communication of the first equipment；
Detect that the first USB interface has the information from the first equipment, detected by the embedded unit and transmit the letter The port of breath, if the port for being used for transmission audio, video data, is then identified as audio, video data, and be transmitted to local terminal by the information MCU, to play corresponding audio and video in local terminal；
The manipulation signal to the first equipment that local terminal detects is obtained, and is sent to the embedded unit；By described Embedded unit sends out the manipulation signal adaptation to the port for being used for transmission manipulation signal, and by first USB interface Send to the first equipment, the first equipment of instruction performs the corresponding action of the manipulation signal after the manipulation signal is received.
Another aspect of the present invention provides a kind of method for realizing wired biography screen, including：
The communication protocol end provided by the second equipment of the general driving identification access local terminal secondary USB interface of pre-installation Mouthful；The general driving provides the common communication protocol to communicate between local terminal and standard USB device, the communication protocol port Include at least：It is used for transmission the port of audio, video data and is used for transmission the port of manipulation signal；Set in second equipment There is one to be used for realization the embedded unit for passing screen, the embedded unit is provided with the first USB interface, the embedded unit with Second equipment MCU communicate to connect, the embedded unit by the first USB interface provide it is some can by general driving identify Communication protocol port；
Intercept and capture picture and/or the audio that local terminal plays；
The audio, video data intercepted is sent to the first USB by the designated port of local terminal secondary USB interface and is connect Mouthful, the designated port is adapted with being used for transmission the port of audio, video data, to be transmitted to the by the embedded unit Two equipment MCU, so that the corresponding audio and video of the second device plays；
Information from first USB interface is received by local terminal secondary USB interface, the end of the information is transmitted in detection Mouthful；If the port for being used for transmission manipulation signal, then the information is identified as manipulation signal, local terminal is performed the manipulation signal Corresponding action.
Another aspect of the invention provides a kind of device for realizing wired biography screen, including：
The embedded unit for passing screen, the embedded unit and the second equipment are used for realization including the second equipment MCU and one MCU is communicated to connect；
Wherein, the embedded unit includes：
Port analog module, for providing some communication protocol ports to the first equipment, the communication protocol port can Identified by the general driving of the first equipment；The general driving of first equipment provide the first equipment and standard USB device it Between the common communication protocol that communicates, the communication protocol port includes at least：It is used for transmission the port of audio, video data and is used for The port of transmission manipulation signal；
Connection establishment module, for being established by the first USB interface of the communication protocol port, the embedded unit The embedded unit is connected with the usb communication of the first equipment；
Audio, video data forwarding module, for detecting that the first USB interface has the information from the first equipment, detection transmission The port of the information, if the port for being used for transmission audio, video data, is then identified as audio, video data by the information；By the sound Video data is forwarded to the second equipment MCU, so that the corresponding audio and video of the second device plays；
Signal return module is manipulated, for the local terminal got by the second equipment MCU of system communication interface reception The manipulation signal to the first equipment detected, the manipulation signal adaptation is arrived and is used for transmission the port for manipulating signal, and is led to Cross first USB interface to send to the first equipment, indicate that the first equipment performs the behaviour after the manipulation signal is received Control the corresponding action of signal.
Another aspect of the invention provides a kind of device for realizing wired biography screen, including：
USB identification modules, the second equipment for the general driving identification access local terminal secondary USB interface by pre-installation The communication protocol port of offer, the general driving provide the common communication protocol to communicate between local terminal and standard USB device, The communication protocol port includes at least：It is used for transmission the port of audio, video data and is used for transmission the port of manipulation signal；Institute To state and an embedded unit for being used for realization biography screen is provided with the second equipment, the embedded unit is provided with the first USB interface, The embedded unit and the second equipment MCU are communicated to connect, and second equipment accesses local terminal the by first USB interface Two USB interfaces simultaneously provide some communication protocol ports that can be identified by general driving；
Audio and video interception module, for intercepting and capturing the picture and/or audio of local terminal broadcasting；
Audio and video sending module, for the designated port by the audio, video data intercepted by local terminal secondary USB interface Send to first USB interface, the designated port is adapted with being used for transmission the port of audio, video data；
Signal receiving module is manipulated, for receiving the information from first USB interface, the end of the information is transmitted in detection Mouthful；If the port for being used for transmission manipulation signal, then the information is identified as manipulation signal, local terminal is performed the manipulation signal Corresponding action.
Above-mentioned technical proposal, sets one to be used for realization the embedded unit for passing and shielding, passes through by embedded in the display device The embedded unit is modeled to the USB device of standard, and is display source device by the USB interface that the embedded unit provides Multiple communication protocol ports needed for providing, display device is established with showing the USB of source device by the communication protocol port Communication connection；When the USB interface for detecting that the embedded unit provides has the information from display source device, by described embedding Enter the port that the information is transmitted in the detection of formula unit, if the port for being used for transmission audio, video data, then the information is identified as sound Video data, is sent to display device MCU, to play corresponding audio and video in display device；Obtain at the same time to showing source device Manipulation signal, the manipulation signal adaptation is arrived by the embedded unit and is used for transmission the port for manipulating signal, and is led to Cross the USB interface that the embedded unit provides to send to display source device, so that display device performs the manipulation signal pair The action answered.For a user, show that source device and display device only need a USB connecting line to realize audio and video number According to biography screen show, while can also realize display device manipulation signal passback, simplify pass screen display wiring, reduce to Family wiring difficulty.
Brief description of the drawings
Fig. 1 is the system environments schematic diagram for implementing the method that the present invention realizes wired biography screen；
Fig. 2 is the indicative flowchart of the method for realizing wired biography screen of an embodiment；
Fig. 3 is the detail flowchart of the method for realizing wired biography screen of an embodiment；
Fig. 4 is the indicative flowchart of the method for realizing wired biography screen of second embodiment；
Fig. 5 is the detail flowchart that the display source device of second embodiment realizes the method for wired biography screen；
Fig. 6 is the schematic diagram of the device for realizing wired biography screen of an embodiment；
Fig. 7 is the schematic diagram of the device for realizing wired biography screen of second embodiment.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
Fig. 1 is the system environments schematic diagram for the method for implementing the wired biography screen of the present invention.As shown in Figure 1, the embodiment of the present invention System environments include display source device (i.e. the first equipment) and display device (i.e. the second equipment).Wherein, show that source device can There are the equipment or system of MCU for operations such as PC, mobile phones, the general driving of at least one pre-installation is possessed in its system, it is described logical The common communication protocol to communicate between display source device and standard USB device is provided with driving.The display source device is also extremely A USB interface (i.e. secondary USB interface) is provided with less, and the attribute of the USB interface is set to USB host.
Wherein, display device has the equipment or system of operating system, such as large-size screen monitors electronic whiteboard for operation.The display is set It is standby to include MCU, the embedded unit (shown in dotted line frame) for passing and shielding that is used for realization with MCU communication connections is further included, it is described embedding Enter formula unit and specifically include memory, processor, the first system communication interface and the first USB interface；Transported in the processor Row has corresponding processor program, and the processor program can identify the information type that the first USB interface receives；It is described to deposit One of purposes of reservoir is under the specific program or specific program used for storing display source device or display device needs Carry device；Corresponding, the display device is additionally provided with corresponding second system communication interface, by the first system communication interface, Second system communication interface realizes the communication of the embedded unit and display device MCU；The attribute of first USB interface is set For USB device, for showing that the secondary USB interface of source device is connected.
Based on the system environments schematic diagram shown in Fig. 1, Fig. 2 is the schematic of the method for realizing wired biography screen of an embodiment Flow chart；In this embodiment it is that it is applied to illustrate exemplified by display device end in this way.
As shown in Fig. 2, the present embodiment realizes that the method for wired biography screen includes step：
S11, some communication protocol ports, the communication protocol end are provided by the embedded unit of local terminal to the first equipment Mouth can be identified by the general driving of the first equipment；The general driving of first equipment provides the first equipment and standard USB The common communication protocol of communication between devices, the communication protocol port include at least：It is used for transmission the port of audio, video data With the port for being used for transmission manipulation signal；
In the present embodiment, local terminal refers to display device, if the embedded unit in display device can be modeled to dry type Standard USB device, and provide corresponding communication protocol port；First equipment is to show source device, and display source device is pacified in advance The general driving of dress can independently drive different types of standard USB device, can be also provided with display source device corresponding Client software, the biography screen for receiving user operate.
USB interface is concept physically in the present embodiment, and is then face by the communication protocol port that USB interface provides To the abstract concept of USB Connection Services, different communication protocol ports can be identified by corresponding port and be distinguished, such as logical Port numbers are crossed to distinguish.In the present embodiment, the port-mark of each communication protocol port can be driven by Universal USB and know Not, also by the port-mark of communication protocol port, to carry out polytype information, (including sound regards the processor of embedded unit Frequency according to or manipulation signal) transmitting-receiving, to realize the transmitting-receiving for realizing by same physical interface a variety of different types of information.
It is corresponding, if embedded unit can be modeled to the standard USB device of dry type, refer to that embedded unit can be based on General standard USB communication protocol enumerates several standard USB communication protocol ports, and different USB communication protocol ports are not using Same port-mark distinguishes.
S12, the usb communication that local terminal and the first equipment are established by the communication protocol port, first USB interface connect Connect；
In the present embodiment, local terminal is display device, if the standard USB that the embedded unit of local terminal can be modeled to dry type is set It is standby, and corresponding communication protocol port is provided, display source device energy free drive is recognized (i.e. by showing source device system generally certainly The Universal USB driving of band just can identify, without specific general driving).
Preferably, the communication protocol port further includes：It is used for transmission the port of link information.It is corresponding, when connecting into After work(, display device can also generate successful connection instruction, and successful connection instruction is sent to the embedded unit；Pass through institute State embedded unit and successful connection instruction is fitted to the port for being used for transmission link information, connect by the first USB Mouth is sent to display source device, is successfully established with informing that display source device connects.
S13, detects that the first USB interface has the information from the first equipment, is detected and transmitted by the embedded unit The port of the information, if the port for being used for transmission audio, video data, is then identified as audio, video data, and be transmitted to by the information Local terminal MCU, so that local terminal plays corresponding audio and video；
Preferably, after local terminal MCU receives audio, video data, also need to parse audio, video data, decompressed and/or Decoding process.
S14, obtains the manipulation signal to the first equipment that local terminal detects, and is sent to the embedded unit；Pass through The manipulation signal adaptation is arrived and is used for transmission the port for manipulating signal by the embedded unit, and is connect by the first USB Mouthful send to the first equipment, it is corresponding dynamic that the first equipment of instruction performs the manipulation signal after the manipulation signal is received Make.
Wherein, the manipulation signal action accordingly can be any action that local terminal is able to carry out.
It should be noted that the execution sequence of above-mentioned steps S13 and S14 are not limited to said sequence, two-part execution is suitable Sequence interchangeable, or can also perform at the same time.
Preferably, the communication protocol port further includes：For accessing the port of memory space.In display source device with showing After showing equipment successful connection, if display source device is mounted with the software program for intercepting and capturing display picture and/or audio in advance, Currently playing display picture and/or audio are then intercepted and captured by the software program, is sent after being carried out packing processing to display Equipment.If display source device does not install such software program in advance, depositing for the embedded unit can be accessed by USB interface Reservoir (memory space), it is currently playing aobvious to intercept and capture to run the program that is prestored in the memory of the embedded unit Show the software program of picture and/or audio, and carried out packing processing, the audio, video data video after packing is handled arrives Corresponding port, and sent by secondary USB interface to the first USB interface of the embedded unit, by described embedded Unit forwards are to display device MCU.Requirement of the second way to showing source device is lower, even if it is corresponding without installation in advance Program, for display source device (such as PC), when the display device of the embedded unit is inserted with, It can see one " moveable magnetic disc " in " my computer " root, be the memory space of the embedded unit, thus show Show that source device can just run the application program prestored from " moveable magnetic disc ", and then realize the effect of plug and play Fruit.Display device receives audio, video data from the first USB interface, is played out after being handled, realizes audio, video data Pass screen display.
On the other hand, the manipulation signal to showing source device can be also obtained by display device system program, by the behaviour Control signal is sent to the system communication interface of the embedded unit；By the embedded unit by the manipulation signal adaptation To the port for being used for transmission manipulation signal, and returned by the first USB interface so that display source device can be by the behaviour Control signal is converted to corresponding manipulation event and performs corresponding action.Such as：The embedded unit is touched display device The event of touching is converted into HID touch events, it is modeled to HID touch apparatus, by the first USB interface by the HID touch events Submit to display source device system.For display source device system, according to the action event of conventional treatment HID touch apparatus Mode, perform corresponding action.
Based on above-mentioned wired screen transmission method, on the one hand can be provided for common display source device need to use it is all kinds of USB communication protocol port, common display source device can free drive identification, moreover it is possible to by the storage for running the embedded unit The program prestored in device completes corresponding audio, video data and intercepts and captures function, realizes the effect of plug and play；Only need one USB connecting lines can realize that display source device is connected with the limited biography screen of display device, while can also realize that display device manipulates The passback of signal, simplifies the wiring for passing screen display.
It is understood that the port of link information is used for transmission in the present embodiment, is used for transmission the end of audio/video information Mouth can be respectively HID1 ports, HID2 ports；The port for being used for transmission memory space access instruction can be the port of Mac types. In other words, the embedded unit can be made to be modeled to by its first USB interface a variety of according to actual needs in the present embodiment Type, the communication protocol port of source device system free drive identification can be shown, and some communication protocol ports can The driving of the general driving of shown source device independently, is respectively used to transmit different data messages.
Fig. 3 is the detail flowchart of the method for realizing wired biography screen of an embodiment；With reference to figure 3, the detection of display device end There is the information from display source device to the first USB interface, the port for transmitting the information is detected by the embedded unit, if To be used for transmission the port of passback request, then the information is identified as passback request instruction, is sent to by system communication interface Display device MCU, and then open display device and be used to obtain the function of detecting the manipulation information to showing source device.Specifically , the step of display device end need to perform, is as follows：
S101, the processor program operation of embedded unit, detects whether first USB interface meets in display device The display source device access of condition.
Detect whether the first USB interface has equipment connection, if so, further detecting whether the equipment is to meet the requirements Display source device.Specifically, whether the equipment that access can be detected by specific ID (PID/VID) is satisfactory display source Equipment.
S102, if detecting display source device access, the processor program of the embedded unit passes through the first USB interface Standard USB device is modeled to, enables to have the display source device free drive of general driving to identify.
S103, the processor program generation successful connection instruction of the embedded unit, confirms to pass screen successful connection；
Successful connection instruction is fitted to and is used for transmission by the processor program of embedded unit described in the present embodiment The port of link information, and sent by the first USB interface to the secondary USB interface of display source device, inform display source device Pass screen successful connection.
S104, the processor program of the embedded unit detect whether the first USB interface has from display source device sound Video file stream；
In the present embodiment, if the processor program of the embedded unit detects that the first USB interface has from display source After the information of equipment, the port of the information is transmitted in further detection, then can should if the port for being used for transmission audio, video data Information is identified as audio, video data.
In the present embodiment, the embedded unit also provides the port for being used for accessing memory space to display source device. Before this step, if the processor program of the embedded unit detects that the first USB interface has the letter from display source device Breath, further detection transmit the port of the information, if the port for accessing memory space, then are identified as storing by the information Space access instructs；The default memory space of the embedded unit is showed into display source device so that display source device system System interface is used to intercept and capture the picture and/or audio that show that source device plays by running the program of the memory space.It is described pre- If the exe executable programs for intercepting and capturing audio, video data are stored with memory space or store the lower information carrying of corresponding program Breath.Therefore the display source device can realize the picture played to it by accessing the memory space or audio is intercepted and captured Function.
S105, the audio-video document stream that the processor program of the embedded unit will be received by the first USB interface Be sent to display device MCU, display device MCU by decompression and/or decoding, played at display device end corresponding picture and/ Or audio.
As a preferred embodiment, which is identified as audio, video data by the processor program of the embedded unit Afterwards, whether have default Trig control signal for configured information forwarding, if listening to the triggering control if can also monitor Signal, then be transmitted to local terminal MCU by the audio, video data, to play corresponding picture and/or audio at display device end.Its In, the Trig control signal can be the operation signal that pre-set button is pressed or default human-computer interaction interface The specific touch manipulation signal of upper generation, i.e. user can be by hardware trigger mode/software triggering mode, to control the insertion Forwarding of the formula unit to audio, video data, the effect of screen displaying is passed with flexible control.
S106, the processor program of the embedded unit detect whether the first USB interface has from display source device Return request instruction；
In the present embodiment, if the processor program of the embedded unit detects that the first USB interface has from display source The port of the information is transmitted in the information of equipment, further detection, then can be by the information if the port for being used for transmission passback request It is identified as passback request instruction.
S107, if receiving the passback request instruction from display source device, the processor program of the embedded unit leads to Cross and the passback request instruction is sent to display device MCU, to open the function of being used to return manipulation information of display device (or the corresponding thread of operation), obtains the manipulation signal to showing source device detected.
It is understood that the above-mentioned trigger mechanism to audio, video data forwarding, is also applied for triggering embedded unit pair Return the forwarding of request instruction, i.e., can also be by hardware trigger mode/software triggering mode, to control embedded unit to passback The forwarding of request instruction.
The manipulation signal is sent to the embedded unit by S108, display device MCU, passes through the embedded unit Processor program by it is described manipulation signal adaptation arrive be used for transmission manipulation signal port, and pass through the first USB interface transmission To display source device, so that display source device performs the corresponding action of the manipulation signal.
It is understood that the above-mentioned trigger mechanism to audio, video data forwarding, is also applied for triggering embedded unit pair Manipulate the forwarding of signal, i.e., can also be by hardware trigger mode/software triggering mode, to control embedded unit to manipulating signal Forwarding, with flexibly control distal end manipulation effect.
It is understood that step S104~S105, the execution sequence of step S106~S108 are not limited to example in figure, Step S106~S108 can be first carried out, then performs step S104~S105；Or two parts are according between the time each set Performed every parallel.
Wired screen transmission method of the present embodiment, sets one to be used for realization the embedded of biography screen by embedded in the display device Unit, is by the way that the embedded unit to be modeled to the USB device of standard, and by the USB interface that the embedded unit provides Show that source device provides required multiple communication protocol ports, display device and display source are established by the communication protocol port The usb communication connection of equipment；When the USB interface for detecting that the embedded unit provides has the information from display source device, The port for transmitting the information is detected by the embedded unit, if the port for being used for transmission audio, video data, is then believed this Breath is identified as audio, video data, is sent to display device MCU, to play corresponding audio and video in display device；Obtain at the same time aobvious Show the manipulation signal to showing source device that equipment end detects, arrived the manipulation signal adaptation by the embedded unit The port of manipulation signal is used for transmission, and is sent by the USB interface that the embedded unit provides to display source device, so that Display device performs the corresponding action of the manipulation signal.For a user, show that source device and display device only need one Bar USB connecting lines can realize the biography screen displaying of audio, video data, while can also realize the passback of display device manipulation signal, letter The wiring for passing screen display is changed, has reduced to terminal block difficulty.
Fig. 4 is the indicative flowchart of the method for realizing wired biography screen of second embodiment；The present embodiment realizes wired biography The method of screen is mainly used in display source device end.Refering to what is shown in Fig. 4, the present embodiment realizes that the method for wired biography screen includes step It is as follows.
Step S21, provided by the second equipment of general driving identification the first equipment secondary USB interface of access of pre-installation Communication protocol port；The general driving provides the common communication protocol to communicate between the first equipment and standard USB device； The communication protocol port includes at least：It is used for transmission the port of audio, video data and is used for transmission the port of manipulation signal；Institute To state and an embedded unit for being used for realization biography screen is provided with the second equipment, the embedded unit is provided with the first USB interface, The embedded unit and the second equipment MCU are communicated to connect, and second equipment accesses local terminal the by first USB interface Two USB interfaces simultaneously provide some communication protocol ports that can be identified by general driving；
The first equipment is display source device in the present embodiment, and display source device refers to the equipment as display source；Second Equipment is display device；First USB interface is with showing that the secondary USB interface of source device docks；The secondary USB interface Attribute is USB host, and the attribute of the first USB interface is USB device.
Step S22, the picture and/or audio of the first device plays are intercepted and captured；
In the present embodiment, intercept and capture and show that the picture of source device broadcasting and/or the mode of audio can be：It is described embedding by accessing Enter the data stored in formula unit or program realizes that corresponding, the communication protocol port further includes：For accessing memory space Port.Specifically for example：Show that source device generates memory space access instruction according to user's operation, the access instruction is adapted to Sent to the port for accessing memory space, and by secondary USB interface to first USB interface, it is described embedding to access Enter the default memory space of formula unit, and run what the program of the memory space was played to intercept and capture local terminal by its system interface Picture and/or audio.Thus, without installing corresponding program in advance in display source device, plug and play is realized, is carried for user Convenience is supplied.
Step S23, the audio, video data intercepted is sent to described first by the designated port of secondary USB interface USB interface, the designated port are adapted with being used for transmission the port of audio, video data；
Preferably, source device is shown before audio, video data is sent, and can also be run by its system interface described default The audio, video data intercepted is compressed the corresponding program of memory space and/or coded treatment, to facilitate transmission.
Step S24, the information from first USB interface is received by local terminal secondary USB interface, the letter is transmitted in detection The port of breath；If the port for being used for transmission manipulation signal, then the information is identified as manipulation signal, local terminal is performed the behaviour Control the corresponding action of signal.
Preferably, show that the user at source device end may choose whether to open the function of manipulation signal return, if user selects The function of manipulation signal return is opened, then shows that source device after USB biography screen connections are successfully established, can pass through its 2nd USB Interface sends passback request to display device；Corresponding, the communication protocol port further includes：It is used for transmission the end of passback request Mouthful.Concrete mode is for example：Obtain and show the default passback request flag information of source device, flag information is asked according to passback Whether the passback request function for determining display source device is opening；If so, generation passback request instruction；Please by the passback Ask instruction to be fitted to the port for being used for transmission passback request, sent by secondary USB interface to first USB interface, with logical The system communication interface for crossing the embedded unit is sent to display device system, to notify display device to carry out manipulation signal Passback.
It should be noted that the execution sequence of above-mentioned steps S23 and S24 are not limited to said sequence, two-part execution is suitable Sequence interchangeable, or can also perform at the same time.
Fig. 5 is the detail flowchart of the method for realizing wired biography screen of second embodiment；With reference to figure 5, display source device end The step of need to performing, is as follows：
S201, operation show the universal driver of source device, detect whether to meet setting feature in system background USB device (i.e. display device) accesses；
Whether the USB device that access can be identified by specific ID (PID and/or VID) is that the display for meeting setting feature is set It is standby.
S202, if so, being then confirmed whether there is the successful connection for receiving and being sent by the embedded unit of display device to instruct；
In the present embodiment, show that the general driving of source device detects that secondary USB interface is received from the first USB interface Information, detection transmit the information port, if the port for being used for transmission link information, then may recognize that according to signal content Whether the information is successful connection instruction.
S203, if receiving successful connection instruction, the picture currently playing to display source device and/or audio are cut Take, through overcompression or be encoded into particular file format, the secondary USB interface by showing source device is sent to display device Embedded unit；
Preferably, show that source device can generate memory space access instruction according to user's operation, from the insertion of display device Formula unit is supplied to the port for being obtained in the port of display source device and being used for accessing memory space, and the access instruction is fitted to The port for being used to access memory space, is sent to first USB interface at display device end by secondary USB interface, to visit Ask display device end corresponding memory space；And cut by showing the program of the source device system interface operation memory space Obtain picture and/or the audio that display source device plays.Thus, show that source device without installing corresponding program in advance, realizes Plug and play, provides users with the convenient.
The program for the embedded unit that can be also run by showing source device system interface is compressed audio, video data And/or coding, in order to transmit.Interception code is storable in the USB flash disk of display device end embedded unit simulation, in display source Equipment can be checked by corresponding communication protocol port after first USB interface at access display device end and be stored in display The correspondence memory of equipment end, by show source device system interface run relative program with intercept and capture display source device play picture Face and/or audio (including voice data, further include the audios such as volume, sound channel and adjust information).
S204, confirm show source device passback request function switch whether open (user may be selected beat on or off Close)；
In the present embodiment, after successful connection, it can show that the default passback request flag of source device is believed by reading Breath, whether the passback request function for determining display source device is opening.
S205, if opening, by passback request instruction by showing that the secondary USB interface of source device is sent to display device Embedded unit；
If showing, the current passback request function of source device is opening, and request instruction is returned according to generation；By described in Passback request instruction is fitted to the port for being used for transmission passback request, and the secondary USB interface by showing source device is sent to aobvious Show the first USB interface of equipment end.
S206, detection show whether the secondary USB interface of source device receives the embedded unit passback of display device Manipulate signal；
S207, if receiving, performs corresponding response action.
In the present embodiment, the secondary USB interface by showing source device is received from the first USB interface of display device end The port of the information is transmitted in information, detection, then can be external according to conventional processing if the port for being used for transmission manipulation signal HID device manipulates the mode of event, identifies the manipulation signal of passback, and perform corresponding action.
It is understood that step S204 and S205, the execution sequence of step S206~S207 are not limited to example in figure, Step S206~S207 can be first carried out, then performs step S204 and S205；Or two parts are according between the time each set Performed every parallel.
Wired screen transmission method of the present embodiment, the embedded single for passing and shielding is used for realization by the way that display device end is added one Member, standard USB device is modeled to by the embedded unit, and the USB interface provided by the embedded unit is display source device Some communication protocol ports needed for providing, show that source device is connected with wired biography screen of display device to establish；It can reduce pair Show the requirement of source device, realize plug and play, and show that one USB connecting line of need is just between source device and display device The biography screen displaying of audio, video data can be achieved, while can also realize the passback of display device end manipulation signal, simplify biography screen display The wiring shown, reduces to terminal block difficulty.
By the method for realizing wired biography screen of above-described embodiment, what display device can be provided by the embedded unit If USB interface is modeled to the USB device of dry type, special driving identification can be exempted from by being provided with the display source device of general driving.It is aobvious Show that source device can also obtain the data flow of manipulation signal from display device end, the code for intercepting and capturing audio, video data can be display source The system interface of equipment, but corresponding routine data can be stored in the corresponding memory in display device end, the memory In prestore be useful for data communication and intercept and capture show source device audio, video data routine data or Program download. Display source device and first USB interface at display device end are established after USB is connected, and the addressable memory, passes through operation Wherein corresponding routine data is used to intercept and capture the picture or audio of display source device.Display source device can also pass through fortune Protocol packing of the wherein corresponding routine data of row by audio, video data according to agreement, is then passed by corresponding communication protocol port Send to display device end, display device end and receive data packet from the first USB interface, identified and be forwarded to aobvious by embedded unit Show device systems, through display device system program analysis protocol and bag content, decoding audio, video data plays out.
The system software at display device end can also detect user to show source device touch operation (or other manipulation Signal), the embedded unit is sent to by system communication interface, corresponding end is fitted to by the embedded unit Mouthful, and display source device is returned to by the first USB interface.Show that source device can be passed according to corresponding communication protocol port identification The touch operation signal to come over, is converted into the similar manipulation event of corresponding HID device and performs corresponding response (this Process is that the MCU for showing source device supports that WINDOWS/MAC has this function), it is achieved at display device end to display The effect that source device is manipulated.
It should be noted that for foregoing each method embodiment, describe, it is all expressed as a series of for simplicity Combination of actions, but those skilled in the art should know, the present invention and from the limitation of described sequence of movement, because according to According to the present invention, some steps can use other orders or be carried out at the same time.
It is wired the present invention also provides realizing based on the thought identical with the method for realizing wired biography screen in above-described embodiment The apparatus and system of screen is passed, apparatus and system can be used for performing the above-mentioned method for realizing wired biography screen.For convenience of description, realize In the structure diagram of the apparatus and system embodiment of wired biography screen, illustrate only with the relevant part of the embodiment of the present invention, It will be understood by those skilled in the art that schematic structure does not form the restriction to apparatus and system, can include more more than illustrating Or less component, either combine some components or different components arrangement.
Fig. 6 is the schematic diagram of the device for realizing wired biography screen of one embodiment of the invention, as shown in fig. 6, this reality The device for realizing wired biography screen for applying example specifically includes the embedded unit that the second equipment MCU100 and one is used for realization biography screen 200,200 and second equipment MCU100 of the embedded unit communication connections；Wherein, the second equipment MCU100, for connecing The audio, video data of the embedded unit forwarding is received, makes the corresponding audio and video of the second device plays；And for obtaining to the The picture of two device plays and/or the manipulation signal of audio, and it is sent to the embedded unit；Wherein, the embedded single Member 200 includes：Port analog module 510, connection establishment module 520, audio, video data forwarding module 530 and manipulation signal return Transmission module 540, details are as follows for each module：
The port analog module 510, for providing some communication protocol ports, the communication protocol end to the first equipment Mouth can be identified by the general driving of the first equipment；The general driving of first equipment provides the first equipment and standard USB The common communication protocol of communication between devices, the communication protocol port include at least：It is used for transmission the port of audio, video data With the port for being used for transmission manipulation signal；
The connection establishment module 520, for by the communication protocol port, the embedded unit 200 first USB interface is established the embedded unit 200 and is connected with the usb communication of the first equipment；
The audio, video data forwarding module 530, for detecting that the first USB interface has the information from the first equipment, The port of the information is transmitted in detection, if the port for being used for transmission audio, video data, then the information is identified as audio, video data； The audio, video data is forwarded to the second equipment MCU；
The manipulation signal return module 540, the manipulation signal sent for receiving the second equipment MCU, by the manipulation Signal adaptation is sent to the first equipment, instruction first to the port for being used for transmission manipulation signal, and by first USB interface Equipment performs the corresponding action of the manipulation signal after the manipulation signal is received.
Preferably, the communication protocol port further includes：It is used for transmission the port of link information；It is corresponding, the insertion Formula unit 200 further includes：Connection confirms module (not shown), instructs and is fitted to for generating successful connection and is used for transmission The port of link information, is sent to the first equipment by first USB interface, to inform that the connection of the first equipment is successfully established.
Preferably, the communication protocol port further includes：It is used for transmission the port of passback request；It is corresponding, the insertion Formula unit 200 further includes passback request module (not shown), for detecting that the first USB interface has from the first equipment The port of the information is transmitted in information, detection；If the port for being used for transmission passback request, which is identified as passback request and is referred to Order, and it is sent to the second equipment MCU100；Corresponding, the second equipment MCU100, is additionally operable to receive the embedded unit The passback request instruction of transmission, opens the function that the second equipment is used to return manipulation information.
Preferably, the communication protocol port further includes：For accessing the port of memory space；It is corresponding, the insertion Formula unit 200 further includes：Memory module 550, for detecting that the first USB interface has the information from the first equipment, detection passes The port of the defeated information；If the port for accessing memory space, then by the default memory space exhibition of the embedded unit Showing to the first equipment, makes the first device systems interface be used to intercept and capture the first device plays by running the program of the memory space Picture and/or audio.
In the present embodiment, the first equipment is display source device, and the second equipment is display device；The attribute of first USB interface For USB device.
Fig. 7 is the schematic diagram of the device for realizing wired biography screen of second embodiment.As shown in fig. 7, the present embodiment The device for realizing wired biography screen include：
USB identification modules 610, the secondary USB interface for general driving identification the first equipment of access by pre-installation The second equipment provide communication protocol port, the general driving provides to communicate between the first equipment and standard USB device Common communication protocol, the communication protocol port includes at least：It is used for transmission the port of audio, video data and is used for transmission behaviour Control the port of signal；One is provided with second equipment and is used for realization the embedded unit for passing screen, the embedded unit carries The first USB interface is provided with, the embedded unit and the second equipment MCU are communicated to connect, and second equipment passes through described first USB interface accesses the first equipment secondary USB interface and provides some communication protocol ports that can be identified by general driving；
Audio and video interception module 620, for intercepting and capturing the picture and/or audio of the first device plays；
Audio and video sending module 630, for the audio, video data intercepted to be sent out by the designated port of secondary USB interface Send to first USB interface, the designated port is adapted with being used for transmission the port of audio, video data.
And manipulation signal receiving module 640, for receiving the information from first USB interface, detection transmission should The port of information；If the port for being used for transmission manipulation signal, then the information is identified as manipulation signal, and performed corresponding dynamic Make.
Preferably, the communication protocol port further includes：For accessing the port of memory space；Corresponding, the sound regards Frequency interception module 620：Access instruction specifically for generation is simultaneously fitted to for accessing the port of memory space, and passes through second USB interface is sent to first USB interface, to access the default memory space of the embedded unit, and is set by first Standby system interface runs the program of the memory space to intercept and capture the picture and/or audio of local terminal broadcasting.
Preferably, the communication protocol port further includes：It is used for transmission the port of passback request；Corresponding, described reality The device that existing line passes screen further includes：Request module (not shown) is returned, please for obtaining the default passback of the first equipment Flag information is sought, determines whether the passback request function of the first equipment is opening according to passback request flag information； If so, generation passback request instruction；The passback request instruction is fitted to the port for being used for transmission passback request, and passes through the Two USB interfaces are sent to first USB interface, to be sent by the embedded unit to the second equipment MCU, to open Two equipment are used for the function of returning manipulation signal.
In the present embodiment, the first equipment is display source device, and the second equipment is display device；The attribute of first USB interface For USB device, the attribute of secondary USB interface is USB host.
It should be noted that in the embodiment of the device for realizing wired biography screen of above-mentioned example, between each module/unit Information exchange, the content such as implementation procedure, due to being based on same design, its technology brought with preceding method embodiment of the present invention Effect is identical with preceding method embodiment of the present invention, and particular content can be found in the narration in the method for the present invention embodiment, herein not Repeat again.
In addition, in the embodiment of the device for realizing wired biography screen of above-mentioned example, the logical partitioning of each function module is only It is the realization of the configuration requirement or software for example, can be as needed in practical application, such as corresponding hardware It is convenient to consider, above-mentioned function distribution is completed by different function modules, described will realize the inside of the device of wired biography screen Structure is divided into different function modules, to complete all or part of function described above.Wherein each function mould both can be with Realized, can also be realized in the form of software function module in the form of hardware.
It will appreciated by the skilled person that realizing all or part of flow in above-described embodiment method, being can To instruct relevant hardware to complete by computer program, the program can be stored in a computer-readable storage and be situated between In matter, as independent production marketing or use.Described program upon execution, can perform the complete of such as embodiment of above-mentioned each method Portion or part steps.Wherein, the storage medium can be magnetic disc, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access Memory, RAM) etc..
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and does not have the portion being described in detail in some embodiment Point, it may refer to the associated description of other embodiments.It is appreciated that wherein used term " first ", " second " etc. are at this It is used to distinguish object in text, but these objects should not be limited by these terms.
Embodiment described above only expresses the several embodiments of the present invention, it is impossible to is interpreted as to the scope of the claims of the present invention Limitation.It should be pointed out that for those of ordinary skill in the art, without departing from the inventive concept of the premise, Various modifications and improvements can be made, these belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention It should be determined by the appended claims.

Claims (22)

  1. A kind of 1. method for realizing wired biography screen, it is characterised in that set one to be used for realization in local terminal in advance and pass the embedded of screen Unit, the embedded unit are provided with the first USB interface, and the embedded unit is communicated to connect with local terminal MCU；
    The method for realizing wired biography screen includes the following steps：
    Some communication protocol ports are provided to the first equipment, the communication protocol port can be by by the embedded unit of local terminal The general driving identification of first equipment；The general driving of first equipment is provided between the first equipment and standard USB device The common communication protocol of communication；The communication protocol port includes at least：It is used for transmission the port of audio, video data and for passing The port of defeated manipulation signal；
    Establish local terminal by the communication protocol port, first USB interface and be connected with the usb communication of the first equipment；
    Detect that the first USB interface has the information from the first equipment, detected by the embedded unit and transmit the information Port, if the port for being used for transmission audio, video data, is then identified as audio, video data by the information, and is transmitted to local terminal MCU, So that local terminal plays corresponding audio and video；
    The manipulation signal to the first equipment that local terminal detects is obtained, and is sent to the embedded unit；Pass through the insertion Formula unit by it is described manipulation signal adaptation arrive be used for transmission manipulate signal port, and by first USB interface send to First equipment, the first equipment of instruction perform the corresponding action of the manipulation signal after the manipulation signal is received.
  2. 2. the method according to claim 1 for realizing wired biography screen, it is characterised in that also wrap the communication protocol port Include：It is used for transmission the port of link information；
    Established by the communication protocol port, first USB interface after local terminal is connected with the usb communication of the first equipment also Including：
    Generation successful connection is instructed and sent to the embedded unit；The successful connection is referred to by the embedded unit Order is fitted to the port for being used for transmission link information, and is sent by the first USB interface to the first equipment.
  3. 3. the method according to claim 1 for realizing wired biography screen, it is characterised in that also wrap the communication protocol port Include：It is used for transmission the port of passback request；
    Detect that the first USB interface has the information from the first equipment, detected by the embedded unit and transmit the information Further included after port：
    If the port for being used for transmission passback request, then the information is identified as passback request instruction, and is transmitted to local terminal MCU, With open local terminal be used for return manipulate information function.
  4. 4. the method according to claim 1 for realizing wired biography screen, it is characterised in that also wrap the communication protocol port Include：For accessing the port of memory space；The embedded unit also provides a memory space, is at least deposited in the memory space Contain for intercepting and capturing the picture of the first device plays and/or the program of audio；
    Detect that the first USB interface has the information from the first equipment, detected by the embedded unit and transmit the information Further included after port：
    If the port for accessing memory space, then the information is identified as memory space access instruction；Will be described embedded The memory space of unit shows the first equipment so that the first device systems interface is used by running the program of the memory space In the picture and/or audio of intercepting and capturing the first device plays.
  5. 5. the method according to any one of claims 1 to 4 for realizing wired biography screen, it is characterised in that
    First equipment is display source device, and local terminal is display device；
    The attribute of first USB interface is USB device.
  6. 6. the method according to claim 1 for realizing wired biography screen, it is characterised in that the information is identified as audio and video number According to, and be transmitted to local terminal MCU and further include afterwards：
    The audio, video data is decompressed and/or is solved by local terminal MCU volume processing.
  7. 7. the method according to claim 1 for realizing wired biography screen, it is characterised in that the type bag of the manipulation signal Include：Touch control signal or infrared remote-controlled signal.
  8. 8. the method according to any one of claims 1 to 7 for realizing wired biography screen, it is characterised in that described to know the information Not Wei audio, video data, and the step of being transmitted to local terminal MCU include：
    The information is identified as audio, video data, if listening to the default Trig control signal for configured information forwarding, The audio, video data that will identify that is transmitted to local terminal MCU.
  9. A kind of 9. method for realizing wired biography screen, it is characterised in that including：
    The communication protocol port provided by the second equipment of the general driving identification access local terminal secondary USB interface of pre-installation； The general driving provides the common communication protocol to communicate between local terminal and standard USB device, and the communication protocol port is extremely Include less：It is used for transmission the port of audio, video data and is used for transmission the port of manipulation signal；It is provided with second equipment One is used for realization the embedded unit for passing screen, and the embedded unit is provided with the first USB interface, the embedded unit and the Two equipment MCU are communicated to connect, if second equipment accesses local terminal secondary USB interface by first USB interface and provides The dry communication protocol port that can be identified by general driving；
    Intercept and capture picture and/or the audio that local terminal plays；
    The audio, video data intercepted is sent to first USB interface, institute by the designated port of local terminal secondary USB interface State designated port and be adapted with being used for transmission the port of audio, video data, to be transmitted to the second equipment by the embedded unit MCU, so that the corresponding audio and video of the second device plays；
    Information from first USB interface is received by local terminal secondary USB interface, the port of the information is transmitted in detection；If To be used for transmission the port of manipulation signal, then the information is identified as manipulation signal, it is corresponding that local terminal performs the manipulation signal Action.
  10. 10. the method according to claim 9 for realizing wired biography screen, it is characterised in that also wrap the communication protocol port Include：For accessing the port of memory space；The embedded unit also provides a memory space, is stored with the memory space For intercepting and capturing the picture of local terminal broadcasting and/or the program of audio；
    The step of intercepting and capturing picture and/or the audio that local terminal plays includes：
    The access instruction of generation is simultaneously fitted to the port for accessing memory space, is sent by local terminal secondary USB interface to institute The first USB interface is stated, to access the memory space of the embedded unit, and the storage sky is run by local terminal system interface Between program with intercept and capture local terminal broadcasting picture and/or audio.
  11. 11. the method according to claim 9 for realizing wired biography screen, it is characterised in that also wrap the communication protocol port Include：It is used for transmission the port of passback request；
    The communication protocol port provided by the second equipment of the general driving of pre-installation identification access local terminal secondary USB interface it After further include：
    The default passback request flag information of local terminal is obtained, determines that the passback of local terminal is asked according to passback request flag information Whether function is opening；If so, generation passback request instruction；
    The passback request instruction is fitted to the port for being used for transmission passback request, and is sent by local terminal secondary USB interface To first USB interface, to be sent by the embedded unit to the second equipment MCU.
  12. 12. the method according to claim 10 for realizing wired biography screen, it is characterised in that the audio, video data that will be intercepted It is fitted to before being used for transmission the port of audio, video data and further includes：
    The corresponding program of the memory space of the embedded unit is run by local terminal system interface to the audio and video number that intercepts According to being compressed and/or coded treatment.
  13. 13. according to any method for realizing wired biography screen of claim 9 to 12, it is characterised in that local terminal is display source Equipment；Second equipment is display device；
    The attribute of first USB interface is USB device, and the attribute of secondary USB interface is USB host.
  14. 14. a kind of device for realizing wired biography screen, it is characterised in that be used for realization including the second equipment MCU and one and pass the embedding of screen Enter formula unit, the embedded unit and the second equipment MCU are communicated to connect；
    Wherein, the second equipment MCU, for receiving the audio, video data of the embedded unit forwarding, broadcasts the second equipment Put corresponding audio and video；And for obtaining to the picture of the second device plays and/or the manipulation signal of audio, and it is sent to institute State embedded unit；
    The embedded unit includes：
    Port analog module, for providing some communication protocol ports to the first equipment, the communication protocol port can be by the The general driving identification of one equipment；The general driving of first equipment provides leads between the first equipment and standard USB device The common communication protocol of letter, the communication protocol port include at least：It is used for transmission the port of audio, video data and is used for transmission Manipulate the port of signal；
    Connection establishment module, described in being established by the first USB interface of the communication protocol port, the embedded unit Embedded unit is connected with the usb communication of the first equipment；
    Audio, video data forwarding module, for detecting that the first USB interface has the information from the first equipment, the letter is transmitted in detection The port of breath, if the port for being used for transmission audio, video data, is then identified as audio, video data by the information；By the audio and video Data forwarding is to the second equipment MCU；
    Signal return module is manipulated, the manipulation signal sent for receiving the second equipment MCU, by the manipulation signal adaptation to use In the port of transmission manipulation signal, and sent to the first equipment, the first equipment of instruction and received by first USB interface The corresponding action of the manipulation signal is performed after the manipulation signal.
  15. 15. the device according to claim 14 for realizing wired biography screen, it is characterised in that also wrap the communication protocol port Include：It is used for transmission the port of link information；
    The embedded unit further includes:
    Connection confirms module, instructs and is fitted to for generating successful connection and is used for transmission the port of link information, by described First USB interface is sent to the first equipment.
  16. 16. the device according to claim 14 for realizing wired biography screen, it is characterised in that also wrap the communication protocol port Include：It is used for transmission the port of passback request；
    The embedded unit further includes：
    Request receiving module is returned, for detecting that the first USB interface has the information from the first equipment, the information is transmitted in detection Port；If the port for being used for transmission passback request, which is identified as passback request instruction, and be sent to the second equipment MCU；
    The second equipment MCU, is additionally operable to receive the passback request instruction that the embedded unit is sent, and opens the second equipment and uses In the function of passback manipulation information.
  17. 17. the device according to claim 14 for realizing wired biography screen, it is characterised in that also wrap the communication protocol port Include：For accessing the port of memory space；
    The embedded unit further includes：
    The memory module, for detecting that the first USB interface has the information from the first equipment, the end of the information is transmitted in detection Mouthful；If the port for accessing memory space, then the default memory space of the embedded unit is showed into the first equipment, The picture and/or sound for the first device systems interface is intercepted and captured the first device plays by running the program of the memory space to be used for Frequently.
  18. 18. according to any device for realizing wired biography screen of claim 14 to 17, it is characterised in that the first equipment is aobvious Show source device, the second equipment is display device；
    The attribute of first USB interface is USB device.
  19. A kind of 19. device for realizing wired biography screen, it is characterised in that including：
    USB identification modules, the second equipment for the general driving identification access local terminal secondary USB interface by pre-installation provide Communication protocol port；The general driving provides the common communication protocol to communicate between local terminal and standard USB device, described Communication protocol port includes at least：It is used for transmission the port of audio, video data and is used for transmission the port of manipulation signal；Described One is provided with two equipment and is used for realization the embedded unit for passing screen, the embedded unit is provided with the first USB interface, described Embedded unit and the second equipment MCU are communicated to connect, and second equipment accesses local terminal second by first USB interface USB interface simultaneously provides some communication protocol ports that can be identified by general driving；
    Audio and video interception module, for intercepting and capturing the picture and/or audio of local terminal broadcasting；
    Audio and video sending module, for the audio, video data intercepted to be sent by the designated port of local terminal secondary USB interface To first USB interface, the designated port is adapted with being used for transmission the port of audio, video data；
    Signal receiving module is manipulated, for receiving the information from first USB interface, the port of the information is transmitted in detection； If the port for being used for transmission manipulation signal, then the information is identified as manipulation signal, local terminal is performed the manipulation signal pair The action answered.
  20. 20. the device according to claim 19 for realizing wired biography screen, it is characterised in that also wrap the communication protocol port Include：For accessing the port of memory space；
    The audio and video interception module：For generation access instruction and be fitted to for accessing the port of memory space, and lead to Local terminal secondary USB interface is crossed to send to first USB interface, to access the default memory space of the embedded unit, and The program of the memory space is run by local terminal system interface to intercept and capture the picture and/or audio that local terminal plays.
  21. 21. the device according to claim 19 for realizing wired biography screen, it is characterised in that also wrap the communication protocol port Include：It is used for transmission the port of passback request；
    The device for realizing wired biography screen further includes：
    Request module is returned, for obtaining the default passback request flag information of local terminal, flag information is asked according to passback Whether the passback request function for determining local terminal is opening；It is used for transmission back if so, generation returns request instruction and is fitted to The port of request is passed, is sent by local terminal secondary USB interface to first USB interface, to be sent out by the embedded unit Send to the second equipment MCU.
  22. 22. according to any device for realizing wired biography screen of claim 19 to 21, it is characterised in that local terminal is display source Equipment, the second equipment are display device；
    The attribute of first USB interface is USB device, and the attribute of secondary USB interface is USB host.
CN201611048840.0A 2016-10-12 2016-11-21 Method and device for realizing wired screen transmission Active CN107948569B (en)

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PCT/CN2017/103472 WO2018090724A1 (en) 2016-10-12 2017-09-26 Method and apparatus for wired screen transmission

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CN2016108902775 2016-10-12

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