CN102910118A - Support for fixing vehicle-mounted multimedia equipment - Google Patents
Support for fixing vehicle-mounted multimedia equipment Download PDFInfo
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- CN102910118A CN102910118A CN2011102259657A CN201110225965A CN102910118A CN 102910118 A CN102910118 A CN 102910118A CN 2011102259657 A CN2011102259657 A CN 2011102259657A CN 201110225965 A CN201110225965 A CN 201110225965A CN 102910118 A CN102910118 A CN 102910118A
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- control chip
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Abstract
The invention relates to the technical field of radio, in particular to a support for fixing vehicle-mounted multimedia equipment. The invention provides the support for fixing the vehicle-mounted multimedia equipment. The support comprises an intelligent multimedia system, wherein the intelligent multimedia system comprises an MPEG (Moving Pictures Experts Group) master control chip, a digital television receiving module, a GPS (Global Position System) antenna receiver, an extension interface, a display screen and a touch screen; and the digital television receiving module, the GPS antenna receiver, the extension interface, the display screen and the touch screen are respectively connected with the MPEG master control chip. Therefore, the bracket disclosed by the invention can provide an infortainment system with functions of supporting audio/video playing, picture browsing, text reading, sharing with contents of an IPOD, digital television receiving, GPS navigation and the like, so that the life of people in a vehicle is enriched.
Description
Technical field
The present invention relates to technical field of radio, relate in particular to a kind of bracket for fixing vehicle-mounted multimedia equipment.
Background technology
Onboard system refers to the product that can use at automobile or other self-propelled vehiclees, conveniently uses in automobile sport, and modal is vehicle mounted MP 3, MP4, GPS, DVD, vehicle power, in-car TV etc.The usefulness of these vehicle-mounted products generally need to be powered by vehicle-mounted cigarette lighter, and vehicle-mounted product has goed deep into daily life, has also made things convenient for everybody life.Automobile has had the history in 120 years as people's the daily vehicle, and along with the development of science and technology, automobile has also experienced the variation of making rapid progress during this period.Onboard system has comprised vehicle-mounted monitoring system, vehicle GPS, 3G onboard system, inter-vehicle information system etc.
Vehicle-mounted information and entertainment system (In-Vehicle Infotainment is called for short IVI) is to adopt vehicle-mounted special-purpose central process unit, based on Vehicle Body Bus system and Internet service, and the vehicle integrated information disposal system of formation.IVI can realize comprising three-dimensional navigation, real-time road, IPTV, auxiliary driving, fault detection, information of vehicles, Body Control, mobile office, wireless telecommunications, based on a series of application such as online amusement function and TSP services, greatly Cartronic, networking and the intelligent level of lifting.
But all there is function singleness in existing most onboard system, and is intelligent low, do not support IPOD to play, the shortcoming such as can not teleview, along with the construction of digital moving-tv, the application of multimedia technology, the in-vehicle multi-media system device that gathers multi-function in integral whole arises at the historic moment.
Summary of the invention
Technical matters to be solved by this invention is, existing onboard system all exist function singleness, intelligent low, do not support the shortcomings such as IPOD plays, can not teleview.
For solving the problems of the technologies described above, the present invention proposes a kind of bracket for fixing vehicle-mounted multimedia equipment, this support comprises the intelligent multimedia system, and this system comprises: MPEG main control chip, digital TV receiver module, gps antenna receptor, expansion interface, read-out and touch-screen; Described digital TV receiver module, gps antenna receptor, expansion interface, read-out are connected with touch-screen and are connected with described MPEG main control chip respectively.
Further, described MPEG main control chip comprises: audio processing modules, video processing module, picture processing module, document process module, interface module; Audio processing modules is for the treatment of the audio file of MP3, WMA, WAV, ASF or AVI form; Video processing module is for the treatment of the video file of MPEG1, MPEG2, MPEG4, DIVX3, DIVX5 or XVID form; The picture processing module is for the treatment of the picture of JPEG, BMP form; The document process module is for the treatment of the document of TXT form; Interface module is used for supporting I
2C bus, support USB-OTG function.
Further, described digital TV receiver module is for the digital moving-tv signal that receives DVB-T, DMB-TH or ATSC; Described digital TV receiver module comprises: radio-frequency tuner and demoder; Radio-frequency tuner for the radiofrequency signal of a plurality of wave bands that will receive, after low noise amplification, mixing, DC correction, LPF and gain amplification, sends to described demoder; Demoder is used for the zero intermediate frequency signals that receives, and through forming the TS stream of standard format after channel demodulation and the forward error correcting, and is used for described TS stream is sent to the reduction of decoding of described MPEG main control chip, plays out telecast by read-out again.
Further, described gps antenna receptor is connected with described MPEG main control chip by the USB2.0 high-speed interface with OTG function; Described gps antenna receptor, the GPS that is used for the reception satellite locates longitude and latitude information.
Further, described expansion interface comprises: memory interface, USB interface, memory card interface, utilizing camera interface, hard-disk interface, display interface, network interface, IPOD interface.
Further, described read-out is 7 cun TFT-LCD screens.
Further, described touch-screen passes through I
2C interface is connected with described MPEG main control chip.
Further, this system also comprises: internal memory, booting ROM, hard disk.
Further, described support also comprises: permanent seat, and it is configured as a crossbeam shape, mainly plays a supportive role; Bracket component is captiveed joint with described permanent seat; Clip is flexibly connected with described permanent seat, and is located on the support of back seat; Described intelligent multimedia system is arranged in the described permanent seat.
In sum, the invention provides a kind of bracket for fixing vehicle-mounted multimedia equipment, this support can provide the broadcast of a kind of support audio frequency and video, picture browsing, text reading, share with the IPOD content, and the information entertainment of the functions such as Digital TV Receiving, GPS navigation enriches people's the interior life of car.
Description of drawings
Fig. 1 is the structured flowchart of medium-height trestle of the present invention;
Fig. 2 is the inner structure block diagram of the MPEG main control chip among the present invention;
Fig. 3 is the inner structure block diagram of the digital TV receiver module among the present invention;
Fig. 4 is the structured flowchart of the intelligent multimedia system among the present invention;
Fig. 5 is support for fixing vehicle-mounted multimedia constructional drawing of the present invention;
Fig. 6 is support for fixing vehicle-mounted multimedia block diagram of the present invention.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, the present invention proposes a kind of bracket for fixing vehicle-mounted multimedia equipment, comprise the intelligent multimedia system, this system comprises: MPEG main control chip, digital TV receiver module, gps antenna receptor, expansion interface, read-out and touch-screen; Described digital TV receiver module, gps antenna receptor, expansion interface, read-out are connected with touch-screen and are connected with described MPEG main control chip respectively.
Such as Fig. 5, shown in Figure 6, described support also comprises: permanent seat, and it is configured as a crossbeam shape, mainly plays a supportive role; Bracket component is captiveed joint with described permanent seat; Clip is flexibly connected with described permanent seat, and is located on the support of back seat; Described intelligent multimedia system is arranged in the described permanent seat.
This intelligent multimedia system is an embedded system, is take the dedicated system of micro-computer technology as the software and hardware combining on basis, and whole system is pressed the hierarchy design:
1) application layer: GUI Design, playback of media files etc.;
2) operating system layer: thread scheduling, file system etc.;
3) multimedia decoding: media accelerating engine, the decoding of MPEG-1/2/4, WMV9 etc.;
4) drive layer: audio frequency, IDE, LCD, USB2.0 etc.
One, the Hardware Design
Such as Fig. 4, system mainly partly is made of MPEG main control chip treater, internal memory, booting ROM, hard disk, LCD screen, peripheral expansion interface, gps antenna receptor, digital TV receiver module etc.
What native system adopted is that Linux drives, and Linux makes and drives change, upgrading is more flexible.In when design, data, address, the control three large buses of MPEG main control chip treater are connected and change.
Two, Design of System Software
The software of system is comprised of 3 parts: built-in Linux operating system, drive program and application program.Built-in Linux operating system is the platform of user's control system; Drive program adopts modular form, and upwards the decoding application program for client layer provides api function, downwards by system hardware AP1 function control system hardware.
Wherein, built-in Linux operating system be designed with 3 levels: Boot loader, linux kernel and graphics system:
1) Boot loader
The first paragraph code that Boot loader is normally carried out at hardware.System adopts a special software JFlash-Linux as Boot loader, can be directly and the flash memory device on the remote system carry out alternately, and Boot loader is installed in the given position of flash memory.
2) linux kernel
Linux kernel checks hardware and loads root device, then searches the init program of root file system and carry out this program.Select during the configuration kernel: module is enrolled kernel, treater, physical memory off, support ELF, Standard PC floppy disk, is supported ram disc, support initial RAMdisk, virtual terminal, virtual terminal control desk, standard serial port, ext2 file system, control desk to drive, and VGAtext console, DOS FAT, the MSDOS file system.
3) graphics system
Built-in Linux operating system adopts a kind of GUI of lightweight, have light-duty, take that resource is few, the characteristics of high reliability.The system layer design, the bottom is the abstraction interface of a group screen curtain, touch-screen; Interlayer is transplantable graphics engine; Top is various API, calls for graphics application program.The SCREEN abstraction interface of the bottom is based upon on Linux Framebuffer (frame buffer) Equipment Foundations.
Below in conjunction with specific embodiment the hardware module development in the intelligent multimedia of the present invention system is realized being described in detail:
Embodiment one
As shown in Figure 2, described MPEG main control chip comprises: audio processing modules, video processing module, picture processing module, document process module, interface module; Audio processing modules is for the treatment of the audio file of MP3, WMA, WAV, ASF or AVI form; Video processing module is for the treatment of the video file of MPEG1, MPEG2, MPEG4, DIVX3, DIVX5 or XVID form; The picture processing module is for the treatment of the picture of JPEG, BMP form; The document process module is for the treatment of the document of TXT form; Interface module is used for supporting I
2C bus, support USB-OTG function.
The MPEG main control chip is based on the treater of DSP processing and ARM12 disposal system, and performance is more powerful, and the audio frequency and video form of support has MPEG-1/2/4, WMV9, DivX, XVID, MP3, WMA, WAV, ASF, AVI, JPEG etc.The peripheral interface of MPEG main control chip mainly comprises memory interface, USB interface, memory card interface, utilizing camera interface, hard-disk interface, display interface, network interface etc.Support SDRAM, support the DDR memory device, support USB2.0, support two kinds of storage card formats, such as MMC/SD or SD/CF etc.Support (SuSE) Linux OS, also have in addition middleware (such as media player), codec and application program etc.
The MPEG main control chip is built-in audio frequency DAC can directly export decoded stereo analog signal (Line-out), but its horsepower output is very low, and essential plug-in suitable audio amplifier (AMP) could drive loudspeaker.Built-in audio frequency DAC capable of regulating volume, therefore plug-in audio amplifier can be selected the fixed gain type.
Embodiment two
As shown in Figure 3, described digital TV receiver module is for the digital moving-tv signal that receives DVB-T, DMB-TH or ATSC; Described digital TV receiver module comprises: radio-frequency tuner and demoder; Radio-frequency tuner for the radiofrequency signal of a plurality of wave bands that will receive, after low noise amplification, mixing, DC correction, LPF and gain amplification, sends to described demoder; Demoder is used for the zero intermediate frequency signals that receives, and through forming the TS stream of standard format after channel demodulation and the forward error correcting, and is used for described TS stream is sent to the reduction of decoding of described MPEG main control chip, plays out telecast by read-out again.
Because the digital TV receiver module inside of native system is comprised of two parts, be respectively radio-frequency tuner (RF Tuner front-end chip) and demoder (Demodulator demodulation chip), as shown in Figure 3, RF Tuner can receive the radiofrequency signal of a plurality of wave bands (VHFIII/UHF/L1/L2/S), sends to Demodulator after amplifying through low noise amplification (LNA), mixing, DC correction, LPF and gain.RF Tuner onboard clock shaping synchronousing circuit and LDO circuit, so external clock and operating voltage (1.8V) can directly be inputted RF Tuner.
Demodulator can receive the zero intermediate frequency signals from RF Tuner, after channel demodulation and forward error correcting, form the TS stream of standard format, send to the reduction of decoding of MPEG main control chip, play out TV by the read-out that links to each other with the MPEG main control chip again.The built-in programmable DSP of Demodulator hardware system has the multiple interfaces function, such as USB, SDIO, SPI and BUS bus, and built-in MPE-FEC internal memory.Demodulator is to realize by loading different firmwares to the selection of digital television signal standards such as CMMB/DVB-T/ATSC; And the selection of docking port is to realize by built-in configuration pin.In addition, Demodulator passes through I
2The C bus can realize the control to RF Tuner.
Embodiment three
As shown in Figure 4, described gps antenna receptor is connected with described MPEG main control chip by the USB2.0 high-speed interface with OTG function; Described gps antenna receptor, the GPS that is used for the reception satellite locates longitude and latitude information.
The hard disk of native system is equipped with electronic chart, and optimum routing algorithm is housed in the flash memory.The gps antenna receptor can receive GPS location longitude and the latitude information of five satellites, and error is no more than 10 meters, then calculates route by software, shows at 7 cun TFT LCD.
This system's energy real-time tracking road information, which car goes to, and road sign figure just can calculate the information at next crossing, is driver's navigation.
Embodiment four
As shown in Figure 4, described expansion interface comprises: memory interface, USB interface, memory card interface, utilizing camera interface, hard-disk interface, display interface, network interface, IPOD interface.
The built-in SD/MS/MMC card reader of MPEG main control chip can be used to program recording or play multimedia file.
In addition, the MPEG main control chip can become main control end (Host) or equipment end (Device) according to the different set of using also with USB 2.0 OTG interfaces.
The USB interface bus power source can be used as the interface of outside 5V direct supply input.
Native system has an IPOD 30PIN interface, can connect IPOD equipment by this interface, and audio or video in the IPOD is input to the MPEG main control chip.The MPEG main control chip can directly be exported decoded stereo analog signal (Line-out) after processing, and by audio amplifier (AMP), drives loudspeaker and play back; By built-in video encoder, can directly export CVBS and play back to read-out.
Embodiment five
As shown in Figure 4, described read-out is 7 cun TFT-LCD screens.The MPEG main control chip can directly drive 7 cun TFT-LCD screens, supports 24 colored screens, and in addition, built-in TV coder can directly be exported CVBS, S-Video, YPbPr, RGB TV signal.Fig. 4 is output as example with CVBS commonly used.
Described touch-screen passes through I
2C interface is connected with described MPEG main control chip; The MPEG main control chip passes through I
2C comes the software control touch-screen.
Embodiment six
This system also comprises: internal memory, booting ROM, hard disk.
In sum, the intelligent multimedia system among the present invention comprises the MPEG main control chip, and it has powerful multi-media player function.The main innovation thought of this intelligent multimedia system is, has increased information management function, makes multiple multimedia equipment reach intelligent degree, and the entertainment applications field in present automobile is driven has wide market outlook.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a bracket for fixing vehicle-mounted multimedia equipment is characterized in that, comprises the intelligent multimedia system,
This system comprises: MPEG main control chip, digital TV receiver module, gps antenna receptor, expansion interface, read-out and touch-screen;
Described digital TV receiver module, gps antenna receptor, expansion interface, read-out are connected with touch-screen and are connected with described MPEG main control chip respectively.
2. bracket for fixing vehicle-mounted multimedia equipment as claimed in claim 1 is characterized in that described MPEG main control chip comprises: audio processing modules, video processing module, picture processing module, document process module, interface module;
Audio processing modules is for the treatment of the audio file of MP3, WMA, WAV, ASF or AVI form;
Video processing module is for the treatment of the video file of MPEG1, MPEG2, MPEG4, DIVX3, DIVX5 or XVID form;
The picture processing module is for the treatment of the picture of JPEG, BMP form;
The document process module is for the treatment of the document of TXT form;
Interface module is used for supporting the I2C bus, supports the USB-OTG function.
3. bracket for fixing vehicle-mounted multimedia equipment as claimed in claim 1 or 2 is characterized in that, described digital TV receiver module is used for receiving the digital moving-tv signal of DVB-T, DMB-TH or ATSC;
Described digital TV receiver module comprises: radio-frequency tuner and demoder;
Radio-frequency tuner for the radiofrequency signal of a plurality of wave bands that will receive, after low noise amplification, mixing, DC correction, LPF and gain amplification, sends to described demoder;
Demoder is used for the zero intermediate frequency signals that receives, and through forming the TS stream of standard format after channel demodulation and the forward error correcting, and is used for described TS stream is sent to the reduction of decoding of described MPEG main control chip, plays out telecast by read-out again.
4. bracket for fixing vehicle-mounted multimedia equipment as claimed in claim 3 is characterized in that described gps antenna receptor is connected with described MPEG main control chip by the USB2.0 high-speed interface with OTG function;
Described gps antenna receptor, the GPS that is used for the reception satellite locates longitude and latitude information.
5. bracket for fixing vehicle-mounted multimedia equipment as claimed in claim 4 is characterized in that described expansion interface comprises: memory interface, USB interface, memory card interface, utilizing camera interface, hard-disk interface, display interface, network interface, IPOD interface.
6. bracket for fixing vehicle-mounted multimedia equipment as claimed in claim 5 is characterized in that, described read-out is 7 cun TFT-LCD screens.
7. bracket for fixing vehicle-mounted multimedia equipment as claimed in claim 6 is characterized in that described touch-screen is connected with described MPEG main control chip by the I2C interface.
8. bracket for fixing vehicle-mounted multimedia equipment as claimed in claim 7 is characterized in that this system also comprises: internal memory, booting ROM, hard disk.
9. bracket for fixing vehicle-mounted multimedia equipment as claimed in claim 8 is characterized in that, described support also comprises: permanent seat, and it is configured as a crossbeam shape, mainly plays a supportive role; Bracket component is captiveed joint with described permanent seat; Clip is flexibly connected with described permanent seat, and is located on the support of back seat;
Described intelligent multimedia system is arranged in the described permanent seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110225965.7A CN102910118B (en) | 2011-08-05 | 2011-08-05 | A kind of bracket for fixing vehicle-mounted multimedia equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110225965.7A CN102910118B (en) | 2011-08-05 | 2011-08-05 | A kind of bracket for fixing vehicle-mounted multimedia equipment |
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| Publication Number | Publication Date |
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| CN102910118A true CN102910118A (en) | 2013-02-06 |
| CN102910118B CN102910118B (en) | 2016-08-10 |
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| CN201110225965.7A Expired - Fee Related CN102910118B (en) | 2011-08-05 | 2011-08-05 | A kind of bracket for fixing vehicle-mounted multimedia equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107770581A (en) * | 2016-08-17 | 2018-03-06 | 重庆长安汽车股份有限公司 | Vehicle mounted multimedia split air conditioner |
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| CN200994256Y (en) * | 2006-12-18 | 2007-12-19 | 中国电子科技集团公司第三十八研究所 | Automobile comprehensive information platform |
| CN201532201U (en) * | 2009-10-28 | 2010-07-21 | 黄维权 | Core module of vehicle-mounted navigation system |
| CN201788700U (en) * | 2010-08-20 | 2011-04-06 | 深圳市索菱实业有限公司 | Vehicle-mounted multimedia system |
| US20120002355A1 (en) * | 2010-07-01 | 2012-01-05 | Kuo Hsiung Chen | Vehicle-Mounted Electronic Product with Magnetic Connector and its Mounting Bracket |
| CN202138310U (en) * | 2011-08-05 | 2012-02-08 | 深圳市奥尼电子工业有限公司 | Bracket for fixing vehicle-mounted multimedia equipment |
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2011
- 2011-08-05 CN CN201110225965.7A patent/CN102910118B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200994256Y (en) * | 2006-12-18 | 2007-12-19 | 中国电子科技集团公司第三十八研究所 | Automobile comprehensive information platform |
| CN201532201U (en) * | 2009-10-28 | 2010-07-21 | 黄维权 | Core module of vehicle-mounted navigation system |
| US20120002355A1 (en) * | 2010-07-01 | 2012-01-05 | Kuo Hsiung Chen | Vehicle-Mounted Electronic Product with Magnetic Connector and its Mounting Bracket |
| CN201788700U (en) * | 2010-08-20 | 2011-04-06 | 深圳市索菱实业有限公司 | Vehicle-mounted multimedia system |
| CN202138310U (en) * | 2011-08-05 | 2012-02-08 | 深圳市奥尼电子工业有限公司 | Bracket for fixing vehicle-mounted multimedia equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107770581A (en) * | 2016-08-17 | 2018-03-06 | 重庆长安汽车股份有限公司 | Vehicle mounted multimedia split air conditioner |
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Address after: Baoan District Xin'an street Shenzhen city Guangdong province 518102 Liuxian road two Honghui Industrial Park No. 5 building floor Patentee after: SHENZHEN AONI ELECTRONIC Co.,Ltd. Address before: Baoan District Xin'an street Shenzhen city Guangdong province 518102 Liuxian road two Honghui Industrial Park No. 5 building floor Patentee before: Shenzhen Aoni Electronic Industry Co.,Ltd. |
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Granted publication date: 20160810 Termination date: 20210805 |