CN201528379U - Multifunctional vehicle-mounted digital television set-top box - Google Patents
Multifunctional vehicle-mounted digital television set-top box Download PDFInfo
- Publication number
- CN201528379U CN201528379U CN2009201831685U CN200920183168U CN201528379U CN 201528379 U CN201528379 U CN 201528379U CN 2009201831685 U CN2009201831685 U CN 2009201831685U CN 200920183168 U CN200920183168 U CN 200920183168U CN 201528379 U CN201528379 U CN 201528379U
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- top box
- main control
- control chip
- bus
- multifunctional vehicle
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Abstract
The utility model provides a multifunctional vehicle-mounted digital television set-top box comprising an antenna, a tuner and a main control chip, wherein the main control chip comprises an I2C bus, a serial port, a video graph-processing subsystem and an audio subsystem; and the set-top box also comprises an FM receiving module connected with the I2C bus of the main control chip. The set-top box also comprises a GPRS receiving module connected with the main control chip by the serial port. The multifunctional vehicle-mounted digital television set-top box receives GPRS data in real time by connecting the serial port with the GPRS receiving module, when a set station is reached station, voice announcement is carried out automatically, and drivers do not need to manually press buttons. By integrating the FM receiving module with the bus voice announcement, the set-top box has the FM receiving function and the voice announcement function and is integrated with common equipment of the bus into a whole, thereby realizing the multifunction of the set-top box.
Description
[technical field]
The utility model relates to a kind of set-top box, particularly multifunctional vehicle mounted digital TV set-top box, and belonging to audio frequency and video, mobile reception at a high speed and sound broadcast is the digitlization terminal equipment of one.
[background technology]
At present, set-top box technique is developed faster, not only is used widely in fixing environment, also progressively is applied in the mobile environment, as public transit vehicle etc., to satisfy the demand that mobile crowd receives real time information.
The digital TV set-top box of prior art comprises antenna, tuner TUNER, demodulation chip 8G42, main control chip ST5105, and this main control chip ST5105 comprises CPU, I
2C bus, transmission stream interface, demultiplexing functional module, frequency division multiple access (FDMA), audio decoder and Video Decoder, PES analyzer, blender, DDR memory and audio frequency digital to analog conversion module etc.Its operation principle is as follows:
Tuner TUNER is by connecting the antenna receiving digital signals, and front end passes through I under the control of main control chip ST5105 innernal CPU
2The C bus tuner TUNER be tuned to certain digital channel, carry out demodulation by the demodulation chip 8G42 that is connected with tuner, become TS stream input main control chip ST5105 to decode ground GB digital demodulation signal.The transport stream that demodulates (TS stream) data are by transmitting stream interface input main control chip ST5105.TS flow data in the main control chip ST5105 is isolated sound, video PES stream by the demultiplexing functional module, under the control of frequency division multiple access (FDMA), be sent to inner audio decoder and Video Decoder, the demultiplexing functional module also extracts the PCR information in the code stream simultaneously, is used for clock recovery.Audio frequency PES stream through the simulated audio signal of maximum six sound channels of output after the audio frequency digital to analog conversion, or is directly exported the SPDIF light signal by the PCM signal of audio decoder decode output audio; Video PES stream is unpacked into video ES stream through the PES analyzer, after the processing through Video Decoder and blender under the cooperation of DDR memory, and output analog video YPbPr of digital to analog conversion module again or rgb video component signal.
Above-mentioned digital TV set-top box has realized moving the function that receives, watches the real-time television program on automobile, but its function is perfect not enough, as not listening to the function of FM broadcasting, there are not abilities such as integrated automobile satellite navigation system, do not have display device yet, can not satisfy the multi-functional requirement of present user.
[utility model content]
The technical problems to be solved in the utility model is to provide a kind of multifunctional vehicle mounted digital TV set-top box, and integrated FM receiver module, connection GPRS module become one some common equipments of set-top box and vehicle, realize the multifunction of set-top box.
The utility model solves the problems of the technologies described above by the following technical solutions:
Multifunctional vehicle mounted digital TV set-top box comprises antenna, tuner and main control chip, and this main control chip comprises I
2C bus, serial ports, video and graphic processing subsystem and audio subsystem, this set-top box also comprise a FM receiver module, the I of this FM receiver module and described main control chip
2The C bus connects.
This set-top box also comprises the GPRS receiver module, and this GPRS receiver module is connected with described main control chip by serial ports.
Advantage of the present utility model is: connect the GPRS receiver module by serial ports, receive the GPRS data in real time, when the website that arrival was provided with, carry out the sound broadcast of this website automatically, do not need the driver to carry out manual button.Its integrated FM receiver module, public transport sound broadcast make set-top box have FM receiving function and sound broadcast function, and some common equipments of itself and vehicle become one, and realize the multifunction of set-top box.
[description of drawings]
In conjunction with the embodiments the utility model is further described with reference to the accompanying drawings.
Fig. 1 is the structured flowchart of the utility model vehicle-mounted digital television set-top box.
[embodiment]
See also shown in Figure 1, multifunctional vehicle mounted digital TV set-top box 100 comprises antenna 1, tuner (TUNER) 2, main control chip 3, FM receiver module 4, GPRS receiver module 5, flash memory (FLASH) 6, memory (DDR) 7, EEPROM (Electrically Erasable Programmable Read Only Memo) (EEPROM) 9 and demodulation chip 200.
Main control chip 3 is the ST5105 chip, and it comprises CPU301, transmits stream interface 302, demultiplexing functional module 303, frequency division multiple access (FDMA) 304, audio decoder 305 and Video Decoder 306, PES analyzer 307, blender 308 and audio frequency digital to analog conversion module 309, video digital to analog conversion module 310, I2C bus 311, serial ports (RS232) 312, video and graphic processing subsystem 313 and audio subsystem 314.
Wherein FM receiver module 4 is connected with the I2C bus 311 of main control chip 3, and GPRS receiver module 5 is connected with the serial ports 312 of main control chip 3.Tuner (TUNER) 2 is connected with demodulation chip 200 respectively again with main control chip 3, and this tuner 2 is connected with antenna 1 again.
Operation principle of the present utility model is:
When the user selects to listen to the FM broadcast program, select to want the radio station (such as FM100.6) of listening to by the man-machine interface on the LCDs, under the control of main control chip 3 innernal CPUs 301, pass through I2C bus 311, according to the intrinsic algorithm of module, the frequency configuration that needs are tuning is to FM receiver module 4,4 pairs of frequency tunings that set of FM receiver module, carry out demodulating and decoding again, at last by LCDs output video and audio frequency, so realize the whole receiving function of FM and with the function of user interaction.
The GPRS electronics is received module 5 and is whenever fixed a time interval and just receive a data structured data (time+data validity (the effective V-of A-is invalid)+latitude+polarity (south poles)+longitude+polarity (the thing utmost point)+speed+angle+date), and main control chip 3 innernal CPUs 301 read these data structures by serial ports 312.The monitoring serial port 312 that has a process not stopping in the main program of main control chip 3 innernal CPUs 31, after receiving data, pass through fixedly algorithm, obtain necessary message, compare with the bus station information (longitude, latitude) that was stored in originally in the flash memory (FLASH) 6 again, if received data are identical with warp, the latitude of the website of depositing in the storehouse, then earlier original TV programme sound is cut off this moment, obtain the sound bank data and carry out sound broadcast, station to be reported finishes and recovers the voice of TV programme again, finishes the function of calling out the stops that automaticallyes switch this moment.
In addition, the software solidification of the utility model set-top box is 6 li of flash memories, and start back program is transferred to operation in the EEPROM (Electrically Erasable Programmable Read Only Memo) 7; System and user's interface is front panel and OSD menu.Front panel has button and infrared reception and emitter.The user watches the information on the OSD menu, by button or remote controller operation operation information is sent among the CPU301, realizes concrete controlled function by CPU301.The various information stores of system access channel, program and complete machine state are in middle EEPROM (Electrically Erasable Programmable Read Only Memo) 7, and this makes the various useful data in shutdown back can not lose.Simultaneously, when starting shooting, information such as various states, setting and program data can therefrom directly be read by system next time, recover the various states of the preceding system of shutdown last time automatically.
The utility model connects the GPRS receiver module by serial ports, receives the GPRS data in real time, when the website that arrival was provided with, carries out the sound broadcast of this website automatically, does not need the driver to carry out manual button.Its integrated FM receiver module, public transport sound broadcast make set-top box have FM receiving function and sound broadcast function, and some common equipments of itself and vehicle become one, and realize the multifunction of set-top box.
Claims (2)
1. multifunctional vehicle mounted digital TV set-top box comprises antenna, tuner and main control chip, and this main control chip comprises I
2C bus, serial ports, video and graphic processing subsystem and audio subsystem is characterized in that: this set-top box also comprises a FM receiver module, the I of this FM receiver module and described main control chip
2The C bus connects.
2. multifunctional vehicle mounted digital TV set-top box according to claim 1 is characterized in that: this set-top box also comprises the GPRS receiver module, and this GPRS receiver module is connected with described main control chip by serial ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201831685U CN201528379U (en) | 2009-09-30 | 2009-09-30 | Multifunctional vehicle-mounted digital television set-top box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201831685U CN201528379U (en) | 2009-09-30 | 2009-09-30 | Multifunctional vehicle-mounted digital television set-top box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201528379U true CN201528379U (en) | 2010-07-14 |
Family
ID=42519660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201831685U Expired - Fee Related CN201528379U (en) | 2009-09-30 | 2009-09-30 | Multifunctional vehicle-mounted digital television set-top box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201528379U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102602346A (en) * | 2012-03-16 | 2012-07-25 | 四川长虹电器股份有限公司 | Method for automatically switching audio and video signals of bus |
| KR101795122B1 (en) | 2011-11-15 | 2017-11-07 | 그로츠-베케르트 카게 | Metallic card wire |
-
2009
- 2009-09-30 CN CN2009201831685U patent/CN201528379U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101795122B1 (en) | 2011-11-15 | 2017-11-07 | 그로츠-베케르트 카게 | Metallic card wire |
| CN102602346A (en) * | 2012-03-16 | 2012-07-25 | 四川长虹电器股份有限公司 | Method for automatically switching audio and video signals of bus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Mawei Development Zone, Fujian province Fuzhou Ru Jiang Road 350000, No. 70 (Scud Industrial Park) 6 floor and 5 floor two to four Patentee after: Fujian Newland Communication Science Technology Co., Ltd. Address before: 350000 Fuzhou Province, Mawei District, west of the Confucian Road, No. 1 Patentee before: Fujian Newland Communication Science & Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100714 Termination date: 20150930 |
|
| EXPY | Termination of patent right or utility model |