CN103595944A - Wi-Fi display switching device and method among terminals - Google Patents
Wi-Fi display switching device and method among terminals Download PDFInfo
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Abstract
The invention provides a Wi-Fi display switching device and method among terminals. The device comprises an HDMI/MHL signal receiving module, a wireless audio/video signal conversion module and a wireless audio/video signal sending module, wherein the HDMI/MHL signal receiving module is used for receiving HDMI/MHL signals output from the HDMI/MHL signal output interfaces of audio/video signal sending terminals, the wireless audio/video signal conversion module is connected to the HDMI/MHL signal receiving module and is used for converting the obtained HDMI/MHL signals into wireless audio/video signals, and the wireless audio/video signal sending module is connected to the wireless audio/video signal conversion module and is used for sending the converted wireless audio/video signals to wireless audio/video signal receiving modules of audio/video signal receiving terminals. The invention further provides a device and method for interaction control over a vehicle-mounted system and smart mobile terminals based on the Wi-Fi display technology. The Wi-Fi display switching device and method among the terminals achieve the fact that wired audio/video signals are converted into the wireless audio/video signals, greatly increase the number of the smart mobile terminals supported by the Wi-Fi display, can further provide a smart mobile terminal charging function while the Wi-Fi display is carried out, and prolong the continuous working hours of devices carrying out interaction control among terminals through the Wi-Fi display.
Description
Technical field
The present invention relates to the mutual control field of terminal equipment, be specifically related to the wireless biography screen switching device of a kind of terminal room and method, and the onboard system based on wireless biography screen and the mutual device and method of controlling of intelligent mobile terminal.
Background technology
At present, with respect to wired biography screen technical scheme, as adopt connecting line that intelligent mobile terminal is passed through to HDMI (High Definition Multimedia Interface) (High Definition Multimedia Interface, be called for short: HDMI) be connected with onboard system, just can on onboard system, show the screen content of intelligent mobile terminal, wireless biography screen technical scheme utilizes WIFI that the screen content of a terminal is shown in another terminal.
Use wireless biography screen technology (Wi-Fi Display), mobile phone, mobile PC-TV, display can be realized wireless connections, and this standard is formulated by WiFi wireless industry alliance, can compress 3D video, thereby transmit by Wi-Fi.Miracast be WiFi alliance (WiFi Alliance) to supporting the authentication name of the equipment of wireless biography screen function, the equipment authenticating by Miracast, can provide simplify to arrange, and realizes equipment room high-speed transfer video.
The existing intelligent mobile terminal of part is supported wireless biography screen function, as part is provided with in the smart mobile phone of Android system, is provided with wireless audio and video signal transmitting module; But the smart mobile phone that wireless audio and video signal transmitting module is not installed cannot be realized wireless biography screen function at present, the apple smart mobile phone of installation iOS system also needs to walk around apple authentication chip and Airplay scheme just can be carried out wireless biography screen, therefore, support that at present the scope of the smart mobile phone that wireless biography is shielded is little.
In addition, for the smart mobile phone with wireless biography screen function, because wireless biography screen process need carries out mass data transmission, so power consumption is very big, causes the smart mobile phone operating time to shorten.
In current onboard system and the mutual technical scheme of controlling of intelligent mobile terminal, as being called in the Chinese patent application of " onboard system and intelligent mobile terminal interaction control device and method " in the name of application on August 2nd, 2013 the applicant, onboard system is connected by the HDMI/MHL interface arranging with intelligent mobile terminal, carry out wired biography screen, then bluetooth module or USB driver module transmission control protocol are set and return control by control protocol.Above-mentioned patent application is not described by wireless biography screen technology and is carried out the mutual technical scheme of controlling.
Summary of the invention
The invention provides the wireless biography screen switching device of a kind of terminal room and method, the technical problem solving is: the HDMI/MHL signal that audio-video signal transmitting terminal is sent is converted into after audio-video wireless signal, send it to audio-video signal receiving terminal, expand the scope of the terminal of supporting wireless biography screen;
The present invention also provides onboard system and the mutual device and method of controlling of intelligent mobile terminal based on wireless biography screen, the technical problem solving is: by described wireless biography screen switching device and method realizes onboard system and intelligent mobile terminal is controlled alternately,, intelligent mobile terminal audio/video information is sent to onboard system and displays the play, and onboard system and intelligent mobile terminal can be controlled mutually.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
One aspect of the present invention provides the wireless biography screen of a kind of terminal room switching device, comprising:
HDMI/MHL signal receiving module, for receiving from the HDMI/MHL signal of the HDMI/MHL signal output interface output of audio-video signal transmitting terminal;
Wireless audio and video signal conversion module, connects described HDMI/MHL signal receiving module, for the described HDMI/MHL signal obtaining is converted into wireless audio and video signal;
Wireless audio and video signal transmitting module, connects described wireless audio and video signal conversion module, for the wireless audio and video signal after transforming being sent to the wireless audio and video signal receiving module of audio-video signal receiving terminal.
Further, also comprise supply module, by USB, connect the USB interface of audio-video signal transmitting terminal, for charging for described audio-video signal transmitting terminal.
Further, described audio-video signal transmitting terminal is the intelligent mobile terminal that Android system or iOS system are installed; Described audio-video signal receiving terminal is onboard system.
Further, while being provided with wireless audio and video signal transmitting module as the intelligent mobile terminal of described audio-video signal transmitting terminal, for the wireless audio and video signal of described audio-video signal transmitting terminal being sent to the wireless audio and video signal receiving module of audio-video signal receiving terminal.
One aspect of the present invention also provides the wireless biography screen of a kind of terminal room forwarding method, comprising:
Reception is from the HDMI/MHL signal of the HDMI/MHL signal output interface output of audio-video signal transmitting terminal;
Obtain described HDMI/MHL signal, and described HDMI/MHL signal is converted into wireless audio and video signal;
Described wireless audio and video signal after transmission transforms is to the wireless audio and video signal receiving module of audio-video signal receiving terminal.
Further, also comprise power supply step, by USB, connect for described audio-video signal transmitting terminal and charge.
The present invention provides onboard system and the mutual device of controlling of intelligent mobile terminal based on wireless biography screen on the other hand, on described onboard system, be provided with main control unit, described main control unit is connected with microprocessor, described microprocessor is connected with bluetooth module or USB driver element, and the bluetooth module arranging in described onboard system or USB driver element are connected with the bluetooth module arranging in intelligent mobile terminal or USB driver element;
Its key is:
Described main control unit is connected with described wireless audio and video signal and receives converting unit, the signal output that described wireless audio and video signal receives converting unit connects video decoding unit and audio digital to analog converter, described video decoding unit connects driver module, audio processing unit connects main control unit, described audio digital to analog converter and power amplifier module, and the signal input that described wireless audio and video signal receives converting unit is connected with the wireless audio and video signal transmitting module wireless telecommunications of the wireless biography screen of described terminal room switching device.
Further, described wireless audio and video signal reception converting unit comprises described wireless audio and video signal receiving module, wireless audio and video signal converter;
Described wireless audio and video signal receiving module, the wireless audio and video signal sending for receiving the wireless audio and video signal transmitting module of the wireless biography screen of described terminal room switching device;
Wireless audio and video signal converter, for described wireless audio and video signal is converted to digital video signal and digital audio and video signals, and outputs to respectively video decoding unit and audio digital to analog converter.
The present invention provide again on the other hand based on wireless biography screen by onboard system, control the method for intelligent mobile terminal, comprise step:
D. onboard system is connected by bluetooth module or USB driver module with intelligent mobile terminal;
E. onboard system sends the control protocol of packing to intelligent mobile terminal;
F. described onboard system is controlled intelligent mobile terminal by described control protocol.
Its key is, also comprises:
A. the wireless audio and video signal receiving module of onboard system is connected with the wireless audio and video signal transmitting module wireless telecommunications of the wireless biography screen of described terminal room switching device, and the HDMI/MHL signal receiving module of biography that described terminal room is wireless screen switching device receives from the HDMI/MHL signal of the HDMI/MHL signal output interface output of intelligent mobile terminal;
B. the wireless audio and video signal receiving module of onboard system receives the wireless audio and video signal of the wireless audio and video signal transmitting module transmission of the wireless biography screen of described terminal room switching device;
C. described wireless audio and video signal is converted to digital video signal and digital audio and video signals, and on onboard system display video playing sound.
The present invention also provide on the other hand based on wireless biography screen by intelligent mobile terminal, control the method for onboard system, comprise step:
D0. intelligent mobile terminal is connected by bluetooth module or USB driver module with onboard system;
E0. intelligent mobile terminal packing control protocol send to onboard system;
F0. described intelligent mobile terminal is controlled described onboard system by described control protocol.
Its key is, comprising:
A0. the HDMI/MHL signal output interface of intelligent mobile terminal connects the HDMI/MHL signal receiving module of the wireless biography screen of described terminal room switching device, biography that described terminal room the is wireless screen wireless audio and video signal transmitting module of switching device and the wireless audio and video signal receiving module wireless telecommunications of onboard system are connected
B0. the wireless audio and video signal transmitting module of the wireless biography screen of described terminal room switching device sends wireless audio and video signal to the wireless audio and video signal receiving module of onboard system;
C0. described wireless audio and video signal is converted to digital video signal and digital audio and video signals, and on onboard system display video playing sound.
The present invention, with respect to original wireless biography screen mode, uses wireless biography screen switching device to realize wired audio-video signal and is converted to wireless audio and video signal, greatly increases the quantity of the intelligent mobile terminal of wireless biography screen support; And also provide intelligent mobile terminal charge function in the process that realizes wireless biography screen, increased the stream time that carries out terminal room interaction control device by wireless biography screen; In the onboard system based on wireless biography screen and the mutual device and method of controlling of intelligent mobile terminal, by wireless biography screen switching device, undertaken after wireless biography screen, intelligent mobile terminal is connected by bluetooth module or USB driver module with onboard system, realize intelligent mobile terminal and onboard system is controlled alternately, make interface refresh soon, support multiclass mobile terminal, for user provides the service experience of onboard system and intelligent mobile terminal synergistic application, and it is low to realize cost.
Accompanying drawing explanation
Fig. 1 is the general structure schematic diagram of the wireless biography screen of terminal room of the present invention switching device;
Fig. 2 is the structural representation of the wireless biography screen of the terminal room of the first execution mode of the present invention switching device;
Fig. 3 is the structural representation of the wireless biography screen of the terminal room of the second execution mode of the present invention switching device;
Fig. 4 is the structural representation of the wireless biography screen of the terminal room of the 3rd execution mode of the present invention switching device;
Fig. 5 is the structural representation of the wireless biography screen of the terminal room of the 4th execution mode of the present invention switching device;
Fig. 6 is the schematic flow sheet of the wireless biography screen of terminal room of the present invention forwarding method;
Fig. 7 is the structural representation of the onboard system shielding based on wireless biography of the present invention and the mutual device of controlling of intelligent mobile terminal;
Fig. 8 is the structural representation that the wireless audio and video signal in the present invention receives converting unit;
Fig. 9 of the present inventionly controls the schematic flow sheet of the method for intelligent mobile terminal based on wireless biography screen by onboard system;
Figure 10 of the present inventionly controls the schematic flow sheet of the method for onboard system based on wireless biography screen by intelligent mobile terminal.
Embodiment
Below in conjunction with accompanying drawing, specifically illustrate embodiments of the present invention, accompanying drawing is only for reference and use is described, does not form the restriction to scope of patent protection of the present invention.
embodiment 1:
As shown in Figure 1, embodiments of the invention provide the wireless biography screen of a kind of terminal room switching device, comprising:
HDMI/MHL signal receiving module, for receiving from the HDMI/MHL signal of the HDMI/MHL signal output interface output of audio-video signal transmitting terminal;
Wireless audio and video signal conversion module, connects described HDMI/MHL signal receiving module, for the described HDMI/MHL signal obtaining is converted into wireless audio and video signal;
Wireless audio and video signal transmitting module, connects described wireless audio and video signal conversion module, for the wireless audio and video signal after transforming being sent to the wireless audio and video signal receiving module of audio-video signal receiving terminal.
In an embodiment of the present invention, also comprise supply module, by USB, connect the USB interface of audio-video signal transmitting terminal, for charging for described audio-video signal receiving terminal.Described supply module is used wireless biography screen switching device internal electric source or from the power taking of third party's power supply.
As shown in Figure 2-5, described audio-video signal transmitting terminal is the intelligent mobile terminal that Android system or iOS system are installed; Described audio-video signal receiving terminal is onboard system.
As shown in Figure 2, intelligent mobile terminal as described audio-video signal transmitting terminal is provided with wireless audio and video signal transmitting module, for the wireless audio and video signal of described audio-video signal transmitting terminal being sent to the wireless audio and video signal receiving module of audio-video signal receiving terminal.In the present embodiment, on Android smart mobile phone, be provided with wireless audio and video signal transmitting module, directly wireless audio and video signal sent to the wireless audio and video signal receiving module of onboard system, without sending by the wireless biography screen of terminal room switching device.In the present embodiment, the supply module on wireless biography screen switching device is for the charging of Android smart mobile phone.
As shown in Figure 3, the HDMI signal output interface output HDMI signal that Android smart mobile phone arranges is to the HDMI signal receiving module of the wireless biography screen of terminal room switching device, wireless audio and video signal conversion module is converted into wireless audio and video signal by described HDMI/MHL signal, and send to the wireless audio and video signal receiving module on onboard system by wireless audio and video signal transmitting module, and audio frequency and video are being shown to screen display and broadcasting; Supply module is that Android smart mobile phone charges by USB simultaneously.
As shown in Figure 4, the MHL signal output interface output MHL signal that Android smart mobile phone arranges is to the MHL signal receiving module of the wireless biography screen of terminal room switching device, wireless audio and video signal conversion module is converted into wireless audio and video signal by described MHL signal, and send to the wireless audio and video signal receiving module on onboard system by wireless audio and video signal transmitting module, and audio frequency and video are being shown to screen display and broadcasting; Supply module is also that Android smart mobile phone charges by MHL connecting line simultaneously.
As shown in Figure 5, the apple smart mobile phone of iOS system transfers apple 30 pins (Pin) interface/lightnings (Lightning) interface to HDMI signal output interface by the patchcord of apple official, the HDMI signal output interface output HDMI signal of the apple smart mobile phone of iOS system is to the HDMI signal receiving module of the wireless biography screen of terminal room switching device, wireless audio and video signal conversion module is converted into wireless audio and video signal by described HDMI signal, and send to the wireless audio and video signal receiving module on onboard system by wireless audio and video signal transmitting module, and audio frequency and video are being shown to screen display and broadcasting, the apple smart mobile phone that supply module is iOS system by USB simultaneously charges.
As shown in Figure 6, embodiments of the invention also provide the wireless biography screen of a kind of terminal room forwarding method, comprising:
Reception is from the HDMI/MHL signal of the HDMI/MHL signal output interface output of audio-video signal transmitting terminal;
Obtain described HDMI/MHL signal, and described HDMI/MHL signal is converted into wireless audio and video signal;
Described wireless audio and video signal after transmission transforms is to the wireless audio and video signal receiving module of audio-video signal receiving terminal.
In the present embodiment, also comprise power supply step, by USB, connect for described audio-video signal transmitting terminal and charge.
embodiment 2:
As shown in Figure 7, embodiments of the invention provide onboard system and the mutual device of controlling of intelligent mobile terminal based on wireless biography screen, on described onboard system, be provided with main control unit, described main control unit is connected with microprocessor, described microprocessor is connected with bluetooth module or USB driver element, and the bluetooth module arranging in described onboard system or USB driver element are connected with the bluetooth module arranging in intelligent mobile terminal or USB driver element; Its key is:
Described main control unit is connected with described wireless audio and video signal and receives converting unit, the signal output that described wireless audio and video signal receives converting unit connects video decoding unit and audio digital to analog converter, described video decoding unit connects driver module, audio processing unit connects main control unit, described audio digital to analog converter and power amplifier module, and the signal input that described wireless audio and video signal receives converting unit is connected with the wireless audio and video signal transmitting module wireless telecommunications of the wireless biography screen of described terminal room switching device.
Described microprocessor is MPU processor, by embedded high-level operation system of software, realizes the communication function of driving, MFi agreement and the Bluetooth protocol of USB, realizes by BT protocol emulation mouse or usb protocol mobile phone is returned to control operation.
Described main control unit is also connected with power management module.
Described main control unit is CPU processor, carries out the unified above-mentioned component units module of controlling, and described onboard system and mutual device degree of the having height of controlling of intelligent mobile terminal based on wireless biography screen is integrated, the feature of high efficient and reliable.
In the present embodiment, use ST8bit51 kernel STM8S105MCU as master control IC, utilize it to enrich and efficient communication interface, by direct or indirect communication modes, each functional module in control system effectively, as: power management, input, wireless audio and video signal receive converting unit control, display screen drive chip control etc., and can realize real-time upgrading function by reserved serial ports.
In the present embodiment, described video decoding unit, for decoding to the described digital video signal receiving;
Described driver module, for passing through TCON drives display screen display video.
Use TW8836 video AD C and the TCON chip of intersil, as video input and the use of TFT screen display driver of engine end.The input of its highest support 24bit digital video signal and the maximum ability of supporting the output of WXGA (1366x768)/85Hz resolution, can meet most of smart mobile phone and the needs of demonstration are put in car machine sowing.
In the present embodiment, described audio digital to analog converter, for being converted to simulated audio signal by the digital audio and video signals receiving;
Described audio processing unit, for the treatment of described simulated audio signal, to control volume;
Described power amplifier module, for the power of amplified analog audio signal, and plays sound by loud speaker.
Described audio digital to analog converter adopts the audio frequency DAC conversion chip of high sampling rate, coordinates the digital audio and video signals of the MHL/HDMI Receiver IC output of front end, has ensured the voice output of high-fidelity.
In the present embodiment, use the 24bit audio frequency DAC conversion chip of Cirrus Logic company, the I of receiving front-end output
2s digital audio and video signals, the simulated audio signal that changes into standard supplies after power amplifier amplification, and the sound that restores high-fidelity is play.
In the present embodiment, when the bluetooth module arranging in described onboard system is connected with the bluetooth module arranging in intelligent mobile terminal, described onboard system is controlled intelligent mobile terminal by BT agreement;
When the USB driver module arranging in described onboard system is connected with the USB driver module arranging in intelligent mobile terminal, described onboard system is controlled intelligent mobile terminal by usb protocol.
As shown in Figure 8, in the present embodiment, described wireless audio and video signal receives converting unit and comprises described wireless audio and video signal receiving module, wireless audio and video signal converter;
Described wireless audio and video signal receiving module, the wireless audio and video signal sending for receiving the wireless audio and video signal transmitting module of the wireless biography screen of described terminal room switching device;
Wireless audio and video signal converter, for described wireless audio and video signal is converted to digital video signal and digital audio and video signals, and outputs to respectively video decoding unit and audio digital to analog converter.
Embodiments of the invention also provide based on wireless biography screen by onboard system controls the method for intelligent mobile terminal and based on wireless biography, shield by intelligent mobile terminal, control the method for onboard system.
As shown in Figure 9, embodiments of the invention also provide based on wireless biography screen by onboard system, control the method for intelligent mobile terminal, comprise step:
A. the wireless audio and video signal receiving module of onboard system is connected with the wireless audio and video signal transmitting module wireless telecommunications of the wireless biography screen of described terminal room switching device, and the HDMI/MHL signal receiving module of biography that described terminal room is wireless screen switching device receives from the HDMI/MHL signal of the HDMI/MHL signal output interface output of intelligent mobile terminal;
B. the wireless audio and video signal receiving module of onboard system receives the wireless audio and video signal of the wireless audio and video signal transmitting module transmission of the wireless biography screen of described terminal room switching device;
C. described wireless audio and video signal is converted to digital video signal and digital audio and video signals, and on onboard system display video playing sound.
D. onboard system is connected by bluetooth module or USB driver module with intelligent mobile terminal;
E. onboard system sends the control protocol of packing to intelligent mobile terminal;
F. described onboard system is controlled intelligent mobile terminal by described control protocol.
In an embodiment of the present invention, adopt the transmission means of digital video signal and digital audio and video signals, can avoid being subject to electromagnetic environment complicated in car, the impact of numerous interference sources, and the long Distance Transmission of general analogue signal is easily disturbed, thereby make digital video signal and digital audio and video signals be difficult for being disturbed, realized the technique effect of the undistorted high image quality tonequality simultaneous display of intelligent mobile terminal and onboard system.
In step D, when onboard system is connected by bluetooth module with intelligent mobile terminal, the control protocol in step e, F is BT agreement;
In step D, when onboard system is connected by USB driver module with intelligent mobile terminal, the control protocol in step e, F is usb protocol.
As shown in figure 10, the present invention also provide on the other hand based on wireless biography screen by intelligent mobile terminal, control the method for onboard system, comprise step:
A0. the HDMI/MHL signal output interface of intelligent mobile terminal connects the HDMI/MHL signal receiving module of the wireless biography screen of described terminal room switching device, biography that described terminal room the is wireless screen wireless audio and video signal transmitting module of switching device and the wireless audio and video signal receiving module wireless telecommunications of onboard system are connected
B0. the wireless audio and video signal transmitting module of the wireless biography screen of described terminal room switching device sends wireless audio and video signal to the wireless audio and video signal receiving module of onboard system;
C0. described wireless audio and video signal is converted to digital video signal and digital audio and video signals, and on onboard system display video playing sound.
D0. intelligent mobile terminal is connected by bluetooth module or USB driver module with onboard system;
E0. intelligent mobile terminal packing control protocol send to onboard system;
F0. described intelligent mobile terminal is controlled described onboard system by described control protocol.
In step D0, when intelligent mobile terminal is connected by bluetooth module with onboard system, the control protocol in step e, F is BT agreement;
In step D0, when intelligent mobile terminal is connected by USB driver module with onboard system, the control protocol in step e, F is usb protocol.
Above disclosed is only preferred embodiment of the present invention, can not limit the scope of the present invention with this, and the equivalent variations of therefore doing according to the present patent application the scope of the claims, still belongs to the scope that the present invention is contained.
Claims (10)
1. the wireless biography screen of a terminal room switching device, is characterized in that, comprising:
HDMI/MHL signal receiving module, for receiving from the HDMI/MHL signal of the HDMI/MHL signal output interface output of audio-video signal transmitting terminal;
Wireless audio and video signal conversion module, connects described HDMI/MHL signal receiving module, for the described HDMI/MHL signal obtaining is converted into wireless audio and video signal;
Wireless audio and video signal transmitting module, connects described wireless audio and video signal conversion module, for the wireless audio and video signal after transforming being sent to the wireless audio and video signal receiving module of audio-video signal receiving terminal.
2. the wireless biography of terminal room according to claim 1 is shielded switching device, it is characterized in that:
Also comprise supply module, by USB, connect the USB interface of audio-video signal transmitting terminal, for charging for described audio-video signal transmitting terminal.
3. the wireless biography of terminal room according to claim 1 and 2 is shielded switching device, it is characterized in that:
Described audio-video signal transmitting terminal is the intelligent mobile terminal that Android system or iOS system are installed;
Described audio-video signal receiving terminal is onboard system.
4. the wireless biography of terminal room according to claim 3 is shielded switching device, it is characterized in that:
While being provided with wireless audio and video signal transmitting module as the intelligent mobile terminal of described audio-video signal transmitting terminal, for the wireless audio and video signal of described audio-video signal transmitting terminal being sent to the wireless audio and video signal receiving module of audio-video signal receiving terminal.
5. the wireless biography screen of a terminal room forwarding method, is characterized in that, comprising:
Reception is from the HDMI/MHL signal of the HDMI/MHL signal output interface output of audio-video signal transmitting terminal;
Obtain described HDMI/MHL signal, and described HDMI/MHL signal is converted into wireless audio and video signal;
Described wireless audio and video signal after transmission transforms is to the wireless audio and video signal receiving module of audio-video signal receiving terminal.
6. the wireless biography of terminal room according to claim 5 is shielded forwarding method, it is characterized in that:
Also comprise power supply step, by USB, connect for described audio-video signal transmitting terminal and charge.
7. the device that the onboard system based on wireless biography screen and intelligent mobile terminal are controlled alternately, on described onboard system, be provided with main control unit, described main control unit is connected with microprocessor, described microprocessor is connected with bluetooth module or USB driver element, and the bluetooth module arranging in described onboard system or USB driver element are connected with the bluetooth module arranging in intelligent mobile terminal or USB driver element;
It is characterized in that:
Described main control unit is connected with described wireless audio and video signal and receives converting unit, the signal output that described wireless audio and video signal receives converting unit connects video decoding unit and audio digital to analog converter, described video decoding unit connects driver module, audio processing unit connects main control unit, described audio digital to analog converter and power amplifier module, and the signal input that described wireless audio and video signal receives converting unit is connected with the wireless audio and video signal transmitting module wireless telecommunications of the wireless biography screen of described terminal room switching device.
8. the device that the onboard system shielding based on wireless biography according to claim 7 and intelligent mobile terminal are controlled alternately, is characterized in that:
Described wireless audio and video signal receives converting unit and comprises described wireless audio and video signal receiving module, wireless audio and video signal converter;
Described wireless audio and video signal receiving module, the wireless audio and video signal sending for receiving the wireless audio and video signal transmitting module of the wireless biography screen of described terminal room switching device;
Wireless audio and video signal converter, for described wireless audio and video signal is converted to digital video signal and digital audio and video signals, and outputs to respectively video decoding unit and audio digital to analog converter.
Based on wireless biography screen by onboard system, control the method for intelligent mobile terminal, comprise step: D.
Onboard system is connected by bluetooth module or USB driver module with intelligent mobile terminal;
E. onboard system sends the control protocol of packing to intelligent mobile terminal;
F. described onboard system is controlled intelligent mobile terminal by described control protocol.
It is characterized in that, also comprise:
A. the wireless audio and video signal receiving module of onboard system is connected with the wireless audio and video signal transmitting module wireless telecommunications of the wireless biography screen of described terminal room switching device, and the HDMI/MHL signal receiving module of biography that described terminal room is wireless screen switching device receives from the HDMI/MHL signal of the HDMI/MHL signal output interface output of intelligent mobile terminal;
B. the wireless audio and video signal receiving module of onboard system receives the wireless audio and video signal of the wireless audio and video signal transmitting module transmission of the wireless biography screen of described terminal room switching device;
C. described wireless audio and video signal is converted to digital video signal and digital audio and video signals, and on onboard system display video playing sound.
Based on wireless biography screen by intelligent mobile terminal, control the method for onboard system, comprise step:
D0. intelligent mobile terminal is connected by bluetooth module or USB driver module with onboard system;
E0. intelligent mobile terminal packing control protocol send to onboard system;
F0. described intelligent mobile terminal is controlled described onboard system by described control protocol.
It is characterized in that, comprising:
A0. the HDMI/MHL signal output interface of intelligent mobile terminal connects the HDMI/MHL signal receiving module of the wireless biography screen of described terminal room switching device, biography that described terminal room the is wireless screen wireless audio and video signal transmitting module of switching device and the wireless audio and video signal receiving module wireless telecommunications of onboard system are connected
B0. the wireless audio and video signal transmitting module of the wireless biography screen of described terminal room switching device sends wireless audio and video signal to the wireless audio and video signal receiving module of onboard system;
C0. described wireless audio and video signal is converted to digital video signal and digital audio and video signals, and on onboard system display video playing sound.
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