CN206524849U - A kind of anterior entertainment systems for supporting MOST buses - Google Patents
A kind of anterior entertainment systems for supporting MOST buses Download PDFInfo
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- CN206524849U CN206524849U CN201720090637.3U CN201720090637U CN206524849U CN 206524849 U CN206524849 U CN 206524849U CN 201720090637 U CN201720090637 U CN 201720090637U CN 206524849 U CN206524849 U CN 206524849U
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Abstract
The utility model discloses a kind of anterior entertainment systems for supporting MOST buses, belong to vehicle body on-vehicle information entertainment bus technical field, including anterior amusement main frame main control unit, DVD functional modules, HDMI functional modules, USB functional modules, MOST network interface control units；The MOST network interfaces control unit interacts control with anterior amusement main frame main control unit, DVD, HDMI, USB functional modules by serial ports UART.By MOST network interface controllers, using a pair of transmitting-receiving MOST bus wire harness, control information is both transmitted, digital synchronous audio/video flow data message is transmitted again.Digital TV tuner is designed to independent MOST network nodes by the utility model, can not only support front and rear part entertainment systems to share the audio, video data resource of digital TV tuner, also reduce the development amount of front and rear part entertainment systems.
Description
Technical field
The utility model belongs to vehicle body on-vehicle information entertainment bus technical field, and in particular to a kind of MOST buses of supporting
Anterior entertainment systems.
Background technology
At present, the vehicle-mounted information and entertainment system of middle and high end passenger car is generally using front-seat amusement main frame, center display screen, work(
The combination of rate amplifier and loudspeaker.Integrated on-board navigation, CD/DVD disc players, multimedia interface, numeral in front row amusement main frame
The function such as TV and radio.Increase with user to the on-vehicle information amusement function demand of middle and high end passenger car, it is desirable to after
Seat entertainment systems share whole vehicle information amusement function, and terminal display screen and center display screen independent control are rested the head on behind left and right and aobvious
Show.Existing most anterior entertainment systems and rear seat entertainment system functional independence, front and rear part amusement host information entertainment resource is not common
Enjoy；Rear seat entertainment system in order to possess with anterior entertainment systems identical Infotainment resource, make behind its left and right pillow screen with it is anterior
Center display screen can independently select audio-video source, and anterior entertainment systems need increase multi-channel analog or digital audio-video data to connect
Mouthful, audio, video data is transferred to by rear seat entertainment system by analog or digital audio frequency and video wire harness, so as to reach that Infotainment is provided
Share in source；Or rear seat entertainment system increase and anterior entertainment systems identical Infotainment functional module, front and rear part amusement system
System is without audio/video information interaction.Above mentioned problem causes whole vehicle information entertainment systems redundancy big, and cost is high, controls complexity, line
Shu Chongliang, arrangement difficulty and the increase of vehicle EMI, EMC difficulty.
Utility model content
MOST bussing techniques are new vehicle body on-vehicle information entertainment bus technologies, utilize a pair of transmitting-receiving unshielded twisted pairs
Or optical fiber cable, simultaneous transmission control, Multi-path synchronous audio/video flow data and asynchronous bag data.Support the anterior amusement of MOST buses
Systemic-function is stable and flexible, and it can not only control local audio and video resources, additionally it is possible to passes through MOST buses and shares network audio
Audiovisual frequency in digital TV resource in audio and video resources inside video resource, including anterior amusement main frame, network etc..Back seat is given pleasure to
Pillow screen can coordinate to control the Infotainment resource in anterior entertainment systems and MOST networks behind the left and right of music system, and independently of
Front, center display screen.The anterior entertainment systems solve Infotainment resource-sharing, and functional module redundancy, control unit interface is multiple
It is miscellaneous, the problems such as system controls complexity, wire harness weight and complicated strand design；Improve whole vehicle information entertainment systems feature and
Technology sense, is that on-vehicle information amusement intellectuality is laid a good foundation.
In order to solve shortcoming of the prior art, the utility model provides a kind of front portion for supporting MOST buses and entertains system
System.
The utility model is achieved through the following technical solutions：
A kind of anterior entertainment systems for supporting MOST buses, including anterior amusement main frame main control unit, DVD functional modules,
HDMI functional modules, USB functional modules, MOST network interface control units；MOST network interfaces control unit is entertained with anterior
Main frame main control unit interacts control by serial ports UART, and with DVD, HDMI, USB functional modules are carried out also by serial ports UART
Interactive controlling.
The anterior amusement main frame main control unit, for control anterior amusement host display show locally (such as DVD,
HDMI, USB etc.) and MOST networks (such as DTV telegon) video data there is provided audio-source (such as radio) number
According to；
DVD, HDMI, USB functional module is as the anterior local audio, video data module for entertaining main frame, to MOST nets
Network provides audio-video source data；
The MOST network interfaces control unit, including main control module, audio frequency and video handover module, audio frequency and video digital-to-analogue conversion mould
Block (8835 chipset), audio/video coding compress/decoded decompression module (OS85623 chipsets) and the control of MOST network interfaces
Device OS81092；Switching, conversion, coding for controlling local audio-video source data are compressed and are sent in MOST networks；And connect
Receive, decode decompression, conversion, switching MOST network video datas, be additionally operable to control and switch local and network video data, output
Main frame main control unit is entertained to front portion, video data is shown for display screen；
The audio frequency and video handover module, for selecting switching input and output audio, video data；
The audio frequency and video D/A converter module, for the conversion of the analog video digitizer such as CVBS, YPrPb and RGB form, left and right
The simulation numeral such as stereo and IIS audio format is changed；
The audio/video coding compresses/decompression module is decoded, for controlling the volume between RGB, IIS and MLB data format
Code compression/decoding decompression；
The MOST network interface controllers, are responsible for the audio, video data channel in distribution MOST networks, send MediaLB
The audio, video data of data format receives MediaLB numbers to the audio, video data channel specified, or from specified audio frequency and video channel
According to the audio, video data of form.
Further, described anterior main frame main control unit, DVD, HDMI, USB functional module of entertaining is by CVBS, YPrPb
The analog video data of form is input to MOST network interface control units, and the analog audio data of left-right stereo form is defeated
Enter to MOST network interface control units, and receive from MOST network interfaces control units the rgb format of MOST network transmissions
Digital of digital video data, MOST network video datas are shown for front portion amusement host display.
Further, in described MOST network interface control units, main control module MCU PIC32MX795F128L pass through
Serial ports UART control audio frequency and video handover module, audio frequency and video D/A converter module, audio/video coding compression/decoding is controlled by IIC
Decompression module and MOST network interface controllers.Audio frequency and video analog-to-digital conversion module receives the mould that audio frequency and video handover module has been selected
Intend audio, video data, analog audio-video is converted into digital video rgb format and DAB IIS forms, audio frequency and video are input to
Compression/decoding decompression module is encoded, audio/video coding compresses/decoded decompression module reconvert and controlled into MOST network interfaces
The digital audio-video data of the supported MediaLB forms of device, is output in a pair of unshielded twisted pairs or optical fiber MOST networks.
Compared with prior art, advantage of the present utility model is as follows:
The anterior entertainment systems of support MOST buses of the present utility model, by the audio, video data of Infotainment functional module
It is digitized after coding compression, utilizes a pair of transmitting-receiving unshielded twisted pairs or optical fiber cable, simultaneous transmission control, Multi-path synchronous sound
Video stream data and asynchronous bag data.In addition, anterior entertainment systems can be by controlling center display screen, and selection plays this
Audio, video data in ground audio, video data or reception MOST networks, is played after decoding decompression.
Brief description of the drawings
Fig. 1 is a kind of hardware schematic for the anterior entertainment systems for supporting MOST buses of the present utility model；
Fig. 2 shows for a kind of hardware of the Video Quality Metric unit for the anterior entertainment systems for supporting MOST buses of the present utility model
It is intended to；
Fig. 3 shows for a kind of hardware of the audio conversion unit for the anterior entertainment systems for supporting MOST buses of the present utility model
It is intended to.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings.
Embodiment 1
A kind of anterior entertainment systems for supporting MOST buses, including anterior amusement main frame main control unit, DVD functional modules,
HDMI functional modules, USB functional modules, MOST network interface control units；MOST network interfaces control unit is entertained with anterior
Main frame main control unit interacts control by serial ports UART, and with DVD, HDMI, USB functional modules are carried out also by serial ports UART
Interactive controlling.
The anterior amusement main frame main control unit, for control anterior amusement host display show locally (such as DVD,
HDMI, USB etc.) and MOST networks (such as DTV telegon) video data there is provided audio-source (such as radio) number
According to；
DVD, HDMI, USB functional module is as the anterior local audio, video data module for entertaining main frame, to MOST nets
Network provides audio-video source data；
The MOST network interfaces control unit, including main control module, audio frequency and video handover module, audio frequency and video digital-to-analogue conversion mould
Block (8835 chipset), audio/video coding compress/decoded decompression module (OS85623 chipsets) and the control of MOST network interfaces
Device OS81092；Switching, conversion, coding for controlling local audio-video source data are compressed and are sent in MOST networks；And connect
Receive, decode decompression, conversion, switching MOST network video datas, be additionally operable to control and switch local and network video data, output
Main frame main control unit is entertained to front portion, video data is shown for display screen；
The audio frequency and video handover module, for selecting switching input and output audio, video data；
The audio frequency and video D/A converter module, for the conversion of the analog video digitizer such as CVBS, YPrPb and RGB form, left and right
The simulation numeral such as stereo and IIS audio format is changed；
The audio/video coding compresses/decompression module is decoded, for controlling the volume between RGB, IIS and MLB data format
Code compression/decoding decompression；
The MOST network interface controllers, are responsible for the audio, video data channel in distribution MOST networks, send MediaLB
The audio, video data of data format receives MediaLB numbers to the audio, video data channel specified, or from specified audio frequency and video channel
According to the audio, video data of form.
Further, described anterior main frame main control unit, DVD, HDMI, USB functional module of entertaining is by CVBS, YPrPb
The analog video data of form is input to MOST network interface control units, and the analog audio data of left-right stereo form is defeated
Enter to MOST network interface control units, and receive from MOST network interfaces control units the rgb format of MOST network transmissions
Digital of digital video data, MOST network video datas are shown for front portion amusement host display.
Further, in described MOST network interface control units, main control module MCU PIC32MX795F128L pass through
Serial ports UART control audio frequency and video handover module, audio frequency and video D/A converter module, audio/video coding compression/decoding is controlled by IIC
Decompression module and MOST network interface controllers.Audio frequency and video analog-to-digital conversion module receives the mould that audio frequency and video handover module has been selected
Intend audio, video data, analog audio-video is converted into digital video rgb format and DAB IIS forms, audio frequency and video are input to
Compression/decoding decompression module is encoded, audio/video coding compresses/decoded decompression module reconvert and controlled into MOST network interfaces
The digital audio-video data of the supported MediaLB forms of device, is output in a pair of unshielded twisted pairs or optical fiber MOST networks.
From fig. 1, it can be seen that anterior entertainment systems MOST network interfaces control unit is using 32bits's
PIC32MX795F128L, it is compiled by IIC Interface Controllers MOST network interface controller INIC OS81092 all the way and video and solved
Code chip VIOC OS85623, audio frequency and video handover module and audio frequency and video digital-to-analogue conversion mould are controlled by two-way serial ports UART interface
Block, interacts control with anterior amusement main frame main control unit by serial ports UART interface all the way, is connect by serial ports UART all the way
Mouth interacts control with DVD functional modules.
As can be seen from Figure 2, the analog video data source warp of DVD functional modules, HDMI functional modules and the output of USB functional modules
Cross one turn of three switch and input to three road video switchings and analog-digital chip respectively, be converted into the original figure of uncoded compression
Rgb video data.Wherein, two-way is input in coding compression unit VIOC.VIOC is according to MPEG4/H.264 coding compression lattice
Rgb video data are carried out coding compression, and the digital of digital video data for encoding the MediaLB forms after compression is passed through by formula
MOST network interface controllers INIC is transferred in MOST networks；Another road is input to three elections switch and is transferred to anterior amusement system
In the center display screen of system.
In addition, the MOST network interfaces of anterior entertainment systems can receive video data all the way from MOST networks, pass through
Decompression unit is decoded, original figure rgb video data are reduced into.It is transferred to by three elections switch in anterior entertainment systems
Entreat in display screen.
As can be seen from Figure 3, DVD functional modules, HDMI functional modules export the digital audio-frequency data of IIS forms, USB function moulds
Block exports left-right stereo analog audio data, and audio A/D modular converter carries out analog-to-digital conversion to usb audio data.Audio is compiled
Code compression module, as reference clock, is carried out using MOST Network Synchronizations master clock to the digital audio-frequency data of three road IIS forms
Resampling is encoded, and the voice data after coding is transferred in MOST networks by MOST network interface controllers INIC.
Claims (3)
1. a kind of anterior entertainment systems for supporting MOST buses, it is characterised in that including front portion amusement main frame main control unit, DVD
Functional module, HDMI functional modules, USB functional modules, MOST network interface control units；
The anterior amusement main frame main control unit, for controlling anterior amusement host display to show local and MOST Internet videos
There is provided audio source data for data；
DVD, HDMI, USB functional module, as the anterior local audio, video data module for entertaining main frame, to MOST networks
Audio-video source data are provided；
The MOST network interfaces control unit, for controlling the switching, conversion, coding compression of local audio-video source data concurrent
It is sent in MOST networks, and receives, decodes decompression, conversion, switching MOST network video datas, is additionally operable to control switching local
And network video data, anterior amusement main frame main control unit is output to, video data is shown for display screen；
The MOST network interfaces control unit interacts control with anterior amusement main frame main control unit by serial ports UART, with
DVD, HDMI and USB functional module interact control also by serial ports UART；Front portion amusement main frame main control unit, DVD,
HDMI, USB functional module are by CVBS, and the analog video data of YPrPb forms is input to MOST network interface control units, by a left side
The analog audio data of right stereo format is input to MOST network interface control units, and from MOST network interface control units
The digital of digital video data of the rgb format of MOST network transmissions is received, MOST network videos are shown for front portion amusement host display
Frequency evidence.
2. a kind of anterior entertainment systems for supporting MOST buses as claimed in claim 1, it is characterised in that the MOST networks
Interface control unit, including main control module, audio frequency and video handover module, audio frequency and video D/A converter module, audio/video coding compression/solution
Code decompression module and MOST network interface controllers；
The main control module controls audio frequency and video handover module, audio frequency and video D/A converter module by serial ports UART, passes through IIC controls
Audio/video coding compresses/decoded decompression module and MOST network interface controllers；Audio frequency and video analog-to-digital conversion module receives sound and regarded
The analog audio-video data that frequency handover module has been selected, digital video rgb format and DAB are converted into by analog audio-video
IIS forms, are input to audio/video coding and compress/decode decompression module, audio/video coding compresses/decoded decompression module and turns again
Change the digital audio-video data of the supported MediaLB forms of MOST network interface controllers into, be output to a pair of unmasked double
In twisted wire or optical fiber MOST networks；
The audio frequency and video handover module, for selecting switching input and output audio, video data；
The audio frequency and video D/A converter module, for the conversion of the analog video digitizer such as CVBS, YPrPb and RGB form, left and right is three-dimensional
The simulation numeral such as sound and IIS audio format is changed；
The audio/video coding compresses/decompression module is decoded, for controlling the coding pressure between RGB, IIS and MLB data format
Contracting/decoding decompression；
The MOST network interface controllers, are responsible for the audio, video data channel in distribution MOST networks, send MediaLB data
The audio, video data of form receives MediaLB data lattice to the audio, video data channel specified, or from specified audio frequency and video channel
The audio, video data of formula.
3. a kind of anterior entertainment systems for supporting MOST buses as claimed in claim 2, it is characterised in that described master control mould
Block uses 32bits PIC32MX795F128L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720090637.3U CN206524849U (en) | 2017-01-20 | 2017-01-20 | A kind of anterior entertainment systems for supporting MOST buses |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720090637.3U CN206524849U (en) | 2017-01-20 | 2017-01-20 | A kind of anterior entertainment systems for supporting MOST buses |
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| CN206524849U true CN206524849U (en) | 2017-09-26 |
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| CN201720090637.3U Active CN206524849U (en) | 2017-01-20 | 2017-01-20 | A kind of anterior entertainment systems for supporting MOST buses |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109640139A (en) * | 2018-12-12 | 2019-04-16 | 北京长城华冠汽车技术开发有限公司 | Multi-screen sharing method and system based on MOST |
| CN112995543A (en) * | 2021-05-19 | 2021-06-18 | 北京小鸟科技股份有限公司 | Distributed video switching system, method and equipment |
-
2017
- 2017-01-20 CN CN201720090637.3U patent/CN206524849U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109640139A (en) * | 2018-12-12 | 2019-04-16 | 北京长城华冠汽车技术开发有限公司 | Multi-screen sharing method and system based on MOST |
| CN109640139B (en) * | 2018-12-12 | 2021-04-23 | 北京长城华冠汽车技术开发有限公司 | MOST-based multi-screen sharing method and system |
| CN112995543A (en) * | 2021-05-19 | 2021-06-18 | 北京小鸟科技股份有限公司 | Distributed video switching system, method and equipment |
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