CN108924455A - A kind of superposed transmission system based on FPD-Link bus - Google Patents
A kind of superposed transmission system based on FPD-Link bus Download PDFInfo
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- CN108924455A CN108924455A CN201810630907.4A CN201810630907A CN108924455A CN 108924455 A CN108924455 A CN 108924455A CN 201810630907 A CN201810630907 A CN 201810630907A CN 108924455 A CN108924455 A CN 108924455A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
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Abstract
The present invention relates to field of information transmission, more particularly to a kind of superposed transmission system based on FPD-Link bus, the superposed transmission system includes coding module, FPD-Link bus and decoder module, picture signal, voice signal and vision signal are converted into hexadecimal byte code signal by the coding module, and pass through FPD-Link bus transfer to decoder module, byte code signal is converted into playing character signal by the decoder module, wherein, the broadcasting character signal includes picture character signal, phonetic characters signal and video character signal；Meanwhile picture character signal and phonetic characters signal are converted into byte code signal by the decoder module, and by FPD-Link bus transfer to coding module, byte code signal is converted into picture signal and voice signal by the coding module.Realize the mutual real-time synchronization transmission of picture, voice and video.
Description
Technical field
The present invention relates to field of information transmission, and in particular to a kind of superposed transmission system based on FPD-Link bus.
Background technique
In current automobile equipment, it is equipped with multiple multimedias, wherein navigator and instrument board the two modules are all not
It can or lack.Driver can be good at differentiating front road conditions, moreover it is possible to give and drive in terms of the amusement by observation navigator
Member is spiritual to be loosened, and plays good booster action to driver；In addition, driver can be obtained by observation instrument board
Each real time data, such as travel speed, engine speed of automobile etc..If needing to carry out data between navigator and instrument board
Interaction, needs to realize by way of soft or hard combination.
With the development and progress of automobile industry technology, data transfer mode in the prior art is typically all separately to pass
It is defeated, video, picture and voice can not be transmitted in real time together simultaneously.For example, to be often based upon CAN total for the transmission of picture
Wire protocol transmission, needs first to store the image in a buffer area, is then transferred to instrumentation module again, picture can be shown
On instrumentation module, transmission efficiency is low；And it cannot achieve the synchronous transfer of video, image and voice, poor user experience.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, providing a kind of based on FPD-
The superposed transmission system of Link bus solves the problems, such as the mutual real-time synchronization transmission of picture, voice and video.
To solve this technical problem, the present invention provides a kind of superposed transmission system based on FPD-Link bus, described folded
Adding Transmission system includes coding module, FPD-Link bus and decoder module, is passed through between the coding module and decoder module
Picture signal, voice signal and vision signal are converted into hexadecimal word by the connection of FPD-Link bus, the coding module
Code signal is saved, and by FPD-Link bus transfer to decoder module, byte code signal is converted into playing by the decoder module
Character signal, wherein the broadcasting character signal includes picture character signal, phonetic characters signal and video character signal；Together
When, picture character signal and phonetic characters signal are converted into byte code signal by the decoder module, and total by FPD-Link
Line is transferred to coding module, and byte code signal is converted into picture signal and voice signal by the coding module.
Wherein, preferred version is：The superposed transmission system further includes navigation main control module, and the navigation main control module connects
Coding module is connect, the navigation main control module is equipped with the first SPI interface, and the coding module is equipped with corresponding second SPI interface,
First SPI interface and the second SPI interface mutually transmit picture signal and voice signal.
Wherein, preferred version is：The navigation main control module is additionally provided with the first HDMI interface, and the coding module is equipped with pair
The second HDMI interface answered, first HDMI interface is by video signal transmission to the second HDMI interface.
Wherein, preferred version is：The superposed transmission system further includes instrument main control module, and the instrument main control module connects
Decoder module is connect, the decoder module is equipped with third SPI interface, and the instrument main control module is equipped with corresponding 4th SPI interface,
The third SPI interface and the 4th SPI interface mutually transmit picture character signal and phonetic characters signal.
Wherein, preferred version is：The decoder module is equipped with the first MIPI interface, and the instrument main control module, which is equipped with, to be corresponded to
The 2nd MIPI interface, video character signal is transferred to the 2nd MIPI interface by the first MIPI interface.
Wherein, preferred version is：The superposed transmission system further includes display module, and the display module connects instrument master
Module is controlled, the instrument main control module is equipped with the first LVDS interface, and the display module is equipped with corresponding second LVDS interface, institute
It states the first LVDS interface and picture character signal, phonetic characters signal and video character signal is transferred to the second LVDS interface.
Wherein, preferred version is：The superposed transmission system further includes MCU module, the MCU module connection navigation master control
Module, the navigation main control module are equipped with the first UART interface, and the MCU module is equipped with corresponding second UART interface, described
First UART interface is by picture signal and transmitting voice signal to the second UART interface.
Wherein, preferred version is：The superposed transmission system further includes MUC module, and the MUC module connects instrument master control
Module, the instrument main control module are equipped with the first I2C interface, and the MCU module is equipped with corresponding second I2C interface, and described the
Picture character signal and phonetic characters signal are transferred to the second I2C interface by one I2C interface.
Wherein, preferred version is：The superposed transmission system further includes CAN bus, the MCU module and MUC module it
Between connected by CAN bus, the MCU module is by CAN bus by picture signal and transmitting voice signal to MUC module, institute
It states MUC module and picture character signal and phonetic characters signal is transferred to by MCU module by CAN bus.
The beneficial effects of the present invention are compared with prior art, the present invention is a kind of total based on FPD-Link by designing
The superposed transmission system of line is separately connected coding module and decoder module by FPD-Link bus, and the coding module can
Picture, voice and video are transferred to decoder module by FPD-Link bus real-time synchronization, the decoder module can also will scheme
Piece and voice are by FPD-Link bus feedback to coding module, so that coding module is also receiving number while sending data
According to raising working efficiency improves integrated degree, reduces the cumbersome and dimensional problem of line；In addition, applying on automobile parts
When, the coding module connection navigation main control module, the decoder module connects instrument main control module, realizes navigator and instrument
Data interaction between disk can reduce detour, flexible Application for auto-maker in the design process；And institute
It states coding module and is equipped with the interface for being exclusively used in receiving picture and voice signal, be additionally provided with the interface for being exclusively used in receiving vision signal,
The decoder module is equipped with the interface for being exclusively used in transmission picture character signal and phonetic characters signal, is additionally provided with and is exclusively used in transmission view
The interface of frequency character signal, does not involve mutually, guarantees data accurate delivery.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing：
Fig. 1 is the structural block diagram of superposed transmission system of the present invention；
Fig. 2 is the structural block diagram of present invention navigation main control module and coding module data interaction；
Fig. 3 is the structural block diagram of instrument main control module and decoder module data interaction of the present invention；
Fig. 4 is that the invention shows the structural block diagrams of module and the data interaction of instrument main control module；
Fig. 5 is the structural block diagram of MCU module of the present invention and navigation main control module data interaction；
Fig. 6 is the structural block diagram of MUC module of the present invention Yu the data interaction of instrument main control module；
Fig. 7 is the structural block diagram that MCU module of the present invention is interacted with MUC module data.
Specific embodiment
Now in conjunction with attached drawing, elaborate to presently preferred embodiments of the present invention.
As shown in Figures 1 to 7, the present invention provides a kind of preferred implementation of superposed transmission system based on FPD-Link bus
Example.
Specifically, and Fig. 1, a kind of superposed transmission system based on FPD-Link bus 30, the superposed transmission system are referred to
System includes coding module 10, FPD-Link bus 30 and decoder module 20, is led between the coding module 10 and decoder module 20
Cross the connection of FPD-Link bus 30.
Picture signal, voice signal and vision signal are converted into hexadecimal word by algorithm by the coding module 10
Code signal is saved, algorithm described herein meets FPD-Link agreement, and the byte code signal being finally converted into also meets FPD-Link association
View；Then, byte code signal is transferred to decoder module 20 by FPD-Link bus 30 by the coding module 10, realizes data
Real-time Transmission；Then, byte code signal is converted into show by the decoder module 20 by the inverse operation of the algorithm
Broadcasting character signal, realize the superposed transmission of a variety of data, guarantee the subsequent real-time broadcasting that can be realized a variety of data.Its
In, the broadcasting character signal includes picture character signal, phonetic characters signal and video character signal, and picture character signal
It is the character signal for playing pictures, phonetic characters signal is the character signal for playing voice, video character letter
It number is the character signal for playing video.
Meanwhile picture character signal and phonetic characters signal are converted into byte code signal by the decoder module 20, and are led to
It crosses FPD-Link bus 30 and is transferred to coding module 10, byte code signal is converted into picture signal and language by the coding module 10
Sound signal.The coding module 10 is in the data for transmitting four bytes to decoder module 20, while also in decoder module 20
The data of four bytes are obtained, the double-direction control based on FPD-Link bus 30 is realized, reduces asking for the cumbersome and size of connection
Topic, and offset issue is eliminated significantly.
Further, and Fig. 2 is referred to, the superposed transmission system further includes navigation main control module 40, the navigation master control
40 connect coding module 10 of module, the navigation main control module 40 be equipped with the first SPI interface 41, the coding module 10 be equipped with pair
The second SPI interface 11 answered, first SPI interface 41 and the second SPI interface 11 mutually transmission picture signal and voice signal,
It is that the first SPI interface 41 can transmit picture signal and voice signal to the second SPI interface 11, second SPI interface 11 is also
Picture signal and voice signal can be transmitted to the first SPI interface.The navigation main control module 40 is additionally provided with the first HDMI interface 42,
The coding module 10 is equipped with corresponding second HDMI interface 12, and first HDMI interface 42 is by video signal transmission to second
HDMI interface 12.The information of picture and voice is transmitted by SPI interface between navigation main control module 40 and coding module 10, and
The information that video is transmitted by HDMI interface realizes multidata superposed transmission, improves efficiency of transmission, and mutual signal
It will not be interfered.The navigation main control module 40 connects the navigator of automotive interior, and user is carrying out navigation behaviour to navigator
When making, corresponding picture, voice and video can be obtained, for example, user indicates the picture of forward path, voice and video, described
The main control module 40 that navigates can obtain corresponding picture signal, voice signal and vision signal from this.
Still further, and refer to Fig. 3, the superposed transmission system further includes instrument main control module 50, the instrument master
It controls module 50 and connects decoder module 20, the decoder module 20 is equipped with third SPI interface 21, and the instrument main control module 50 is equipped with
Corresponding 4th SPI interface 51, the third SPI interface 21 and the 4th SPI interface 51 mutually transmission picture character signal and language
Sound character signal is that third SPI interface 21 can transmit picture character signal and phonetic characters signal to the 4th SPI interface 51,
4th SPI interface 51 can also transmit picture character signal and phonetic characters signal to third SPI interface 21.The decoding mould
Block 20 be equipped with the first MIPI interface 22, the instrument main control module 50 be equipped with corresponding 2nd MIPI interface 52, described first
Video character signal is transferred to the 2nd MIPI interface 52 by MIPI interface 22.Between decoder module 20 and instrument main control module 50
The information of picture and voice is transmitted by SPI interface, and transmits the information of video by MIPI interface, realizes multidata superposition
Transmission improves efficiency of transmission, and signal will not be interfered between each other.
Wherein, and Fig. 4 is referred to, the superposed transmission system further includes display module 60, and the display module 60 connects instrument
Table main control module 50, the instrument main control module 50 are equipped with the first LVDS interface 53, and the display module 60 is equipped with corresponding the
Two LVDS interfaces 61, first LVDS interface 53 transmit picture character signal, phonetic characters signal and video character signal
To the second LVDS interface 61.The coding module 10 and the decoder module 20 pass through FPD-Link bus 30 transmission picture, language
The information of sound and video, finally, the display module 60 is according to picture character signal, phonetic characters signal and video character signal
It is exported, is played out accordingly.
Superposed transmission system is applied on automobile parts, the connection of the coding module 10 navigation main control module 40 is described
Decoder module 20 connects instrument main control module 50, passes through FPD-Link bus 30 between the coding module 10 and decoder module 20
The superposed transmission of data is carried out, realizes that the data interaction between navigator and instrument board is designing for auto-maker
Detour, flexible Application can be reduced in the process.
In the present embodiment, and Fig. 5 is referred to, the superposed transmission system further includes MCU module 70, and MCU is miniature control
It makes (Micro Control Unit), the connection of the MCU module 70 navigation main control module 40, the navigation main control module 40 is equipped with
First UART interface 43, the MCU module 70 are equipped with corresponding second UART interface 71, and first UART interface 43 is by picture
Signal and transmitting voice signal are to the second UART interface 71.And Fig. 6 is referred to, the superposed transmission system further includes MUC module 80,
MUC is multi-functional coordination (Multi unit coordination), and the MUC module 80 connects instrument main control module 50, institute
Instrument main control module 50 is stated equipped with the first I2C interface 54, the MCU module 70 is equipped with corresponding second I2C interface 81, and described the
Picture character signal and phonetic characters signal are transferred to the second I2C interface 81 by one I2C interface 54.And refer to Fig. 7, the superposition
Transmission system further includes CAN bus 90, is connected between the MCU module 70 and MUC module 80 by CAN bus 90, the MCU
Picture signal and transmitting voice signal are arrived MUC module 80 by CAN bus 90 by module 70, and the MUC module 80 passes through the again
Picture signal and transmitting voice signal to the first I2C interface 54, that is, are transmitted to instrument main control module 50 by two I2C interfaces 81,
And instrument main control module 50 can by the 4th SPI interface by picture signal and transmitting voice signal to third SPI interface 21, be
It is transferred to decoder module 20, the decoder module 20 can convert picture signal and voice signal；The MUC module 80 is logical
It crosses CAN bus 90 and picture character signal and phonetic characters signal is transferred to MCU module 70, the MCU module 70 is again by the
Picture character signal and phonetic characters signal are transferred to the first UART interface 43 by two UART interfaces 71, that is, are transmitted to navigation master
Module 40 is controlled, and picture character signal and phonetic characters signal are transferred to by the main control module 40 that navigates by the first SPI interface 41
Second SPI interface 11, that is, be transmitted to coding module 10, and the coding module 10 can believe picture character signal and phonetic characters
It number is converted.Picture and voice can also be transmitted between MCU module 70 and MUC module 80 by CAN bus 90, realize into
One step ground superposed transmission.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
Any modification made all within the spirits and principles of the present invention, equivalent replacement, improve etc., it should be included in guarantor of the invention
It protects in range.
Claims (9)
1. a kind of superposed transmission system based on FPD-Link bus, it is characterised in that：The superposed transmission system includes coding
Module, FPD-Link bus and decoder module, are connected between the coding module and decoder module by FPD-Link bus, institute
It states coding module and picture signal, voice signal and vision signal is converted into hexadecimal byte code signal, and pass through FPD-
To decoder module, byte code signal is converted into playing character signal Link bus transfer by the decoder module, wherein described to broadcast
Putting character signal includes picture character signal, phonetic characters signal and video character signal；Meanwhile the decoder module is by picture
Character signal and phonetic characters signal are converted into byte code signal, and by FPD-Link bus transfer to coding module, described
Byte code signal is converted into picture signal and voice signal by coding module.
2. superposed transmission system according to claim 1, it is characterised in that：The superposed transmission system further includes navigation master
Module, the navigation main control module connect coding module are controlled, the navigation main control module is equipped with the first SPI interface, the coding
Module is equipped with corresponding second SPI interface, and first SPI interface and the second SPI interface mutually transmit picture signal and voice
Signal.
3. superposed transmission system according to claim 2, it is characterised in that：The navigation main control module is additionally provided with first
HDMI interface, the coding module are equipped with corresponding second HDMI interface, and first HDMI interface arrives video signal transmission
Second HDMI interface.
4. superposed transmission system according to claim 2 or 3, it is characterised in that：The superposed transmission system further includes instrument
Table main control module, the instrument main control module connect decoder module, and the decoder module is equipped with third SPI interface, the instrument
Main control module is equipped with corresponding 4th SPI interface, and the third SPI interface and the 4th SPI interface mutually transmit picture character letter
Number and phonetic characters signal.
5. superposed transmission system according to claim 4, it is characterised in that：The decoder module is equipped with the first MIPI and connects
Mouthful, the instrument main control module is equipped with corresponding 2nd MIPI interface, and the first MIPI interface transmits video character signal
To the 2nd MIPI interface.
6. superposed transmission system according to claim 5, it is characterised in that：The superposed transmission system further includes display mould
Block, the display module connect instrument main control module, and the instrument main control module is equipped with the first LVDS interface, the display module
Equipped with corresponding second LVDS interface, first LVDS interface is by picture character signal, phonetic characters signal and video character
Signal is transferred to the second LVDS interface.
7. superposed transmission system according to claim 1, it is characterised in that：The superposed transmission system further includes MCU mould
Block, the MCU module connection navigation main control module, the navigation main control module are equipped with the first UART interface, and the MCU module is set
There is corresponding second UART interface, first UART interface is by picture signal and transmitting voice signal to the second UART interface.
8. superposed transmission system according to claim 7, it is characterised in that：The superposed transmission system further includes MUC mould
Block, the MUC module connect instrument main control module, and the instrument main control module is equipped with the first I2C interface, and the MCU module is set
There is corresponding second I2C interface, picture character signal and phonetic characters signal are transferred to the 2nd I2C by first I2C interface
Interface.
9. superposed transmission system according to claim 8, it is characterised in that：The superposed transmission system further includes CAN total
Line is connected between the MCU module and MUC module by CAN bus, the MCU module by CAN bus by picture signal and
Transmitting voice signal to MUC module, transmitted picture character signal and phonetic characters signal by CAN bus by the MUC module
To MCU module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810630907.4A CN108924455B (en) | 2018-06-19 | 2018-06-19 | Overlay transmission system based on FPD-Link bus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810630907.4A CN108924455B (en) | 2018-06-19 | 2018-06-19 | Overlay transmission system based on FPD-Link bus |
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| Publication Number | Publication Date |
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| CN108924455A true CN108924455A (en) | 2018-11-30 |
| CN108924455B CN108924455B (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810630907.4A Active CN108924455B (en) | 2018-06-19 | 2018-06-19 | Overlay transmission system based on FPD-Link bus |
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Cited By (1)
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| CN109497918A (en) * | 2018-12-14 | 2019-03-22 | 深圳市博盛医疗科技有限公司 | A kind of transmission of fujinon electronic video endoscope high-speed video and isolating device |
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| Publication number | Publication date |
|---|---|
| CN108924455B (en) | 2021-03-26 |
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