CN101605245B - Self-adaptive wireless video backing system - Google Patents
Self-adaptive wireless video backing system Download PDFInfo
- Publication number
- CN101605245B CN101605245B CN2008100388929A CN200810038892A CN101605245B CN 101605245 B CN101605245 B CN 101605245B CN 2008100388929 A CN2008100388929 A CN 2008100388929A CN 200810038892 A CN200810038892 A CN 200810038892A CN 101605245 B CN101605245 B CN 101605245B
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- circuit module
- wireless video
- rear end
- microprocessor
- mainboard
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Abstract
The invention relates to a self-adaptive wireless video backing system which comprises a system front end and a system back end. The system is characterized in that the system front end is provided with a front end mainboard and a display screen; the front end mainboard is provided with a front end microprocessor, a 2.4G wireless video receiving circuit module, a 315M or 433M emission circuit module, a synchronous separation circuit module and a liquid crystal driver circuit module; and the system back end is provided with a back end mainboard and a video acquisition circuit module; and the back end mainboard is provided with a back end microprocessor, a 315M or 433M receiving circuit module and a 2.4G wireless video emission circuit module. The system has the advantages of simple mounting, fewer faults and easy maintenance and can be automatically adjusted according to a frequency point occupied by an adjacent wireless video backing system, reduces the probability of interferences and mixed stations among the wireless video backing systems and guarantees good backing safety effect.
Description
Technical field
The present invention relates to a kind of video backing system, particularly a kind of self-adaptive wireless video backing system.
Background technology
Along with the develop rapidly of Chinese national economy, automobile and driver's quantity is all in continuous growth.All drivers, particularly fresh driver and oversize vehicle driver pay attention to the safety issue of moveing backward very much.The back-sight visual system of automobile is one of effective equipment that guarantees reversing safety.Most vehicles in the market are not equipped with back-sight visual system when dispatching from the factory; The back-sight visual system of oneself installing behind car owner's buying car generally all is wired back-sight visual system; Wired back-sight visual system is installed pretty troublesome, break down easily, and some full-sized car can't be installed.Some wireless back-sight visual systems are also arranged now, but analog signal interferes with each other easily when transmission, even get two or more radio stations at once, have a strong impact on the backsight effect.
Summary of the invention
The present invention provides a kind of self-adaptive wireless video backing system, has solved prior art problems such as trouble, fault are many, interference free performance difference are installed.The present invention relates to a kind of self-adaptive wireless video backing system; Comprise system front end and system rear end; It is characterized in that: system front end is provided with front end mainboard and display screen; The front end mainboard is provided with front end microprocessor, 2.4G wireless video receiving circuit module, 315M or 433M radiating circuit module, synchronizing separator circuit module and liquid crystal display drive circuit module; The front end microprocessor is connected with 2.4G wireless video receiving circuit module, 315M or 433M radiating circuit module, synchronizing separator circuit module and liquid crystal display drive circuit module respectively; The synchronizing separator circuit module is connected with 2.4G wireless video receiving circuit module with the front end microprocessor respectively; The liquid crystal display drive circuit module is connected with display screen, front end microprocessor and 2.4G wireless video receiving circuit module; The system rear end is provided with rear end mainboard and video capture circuit module; The rear end mainboard is provided with rear end microprocessor, 315M or 433M receiving circuit module and 2.4G wireless video radiating circuit module, and the rear end microprocessor is connected with 2.4G wireless video radiating circuit module with 315M or 433M receiving circuit module respectively, and 2.4G wireless video radiating circuit module is connected with the video capture circuit module.Described display screen is the TFT LCDs.Described video capture circuit module is a camera.Described liquid crystal display drive circuit module is a lcd drive chip.The invention has the advantages that: the present invention installs simply, few, the easy care of fault; Can come to regulate automatically according near the shared a certain frequency of wireless video backing system; Reduce between the wireless video backing system probability that disturbs and get two or more radio stations at once, ensure that the reversing safe effect is good.
Description of drawings
Accompanying drawing 1 is the structural representation of system front end of the present invention,
Accompanying drawing 2 is the structural representation of system of the present invention rear end,
Accompanying drawing 3 is an operation principle flow chart of the present invention.
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated.
Embodiment
Comprise system front end 1 and system rear end 2 among the figure; It is characterized in that: system front end 1 is provided with front end mainboard 3 and display screen 4; Front end mainboard 3 is provided with front end microprocessor 5,2.4G wireless video receiving circuit module 6,315M or 433M radiating circuit module 7, synchronizing separator circuit module 8 and liquid crystal display drive circuit module 9; Front end microprocessor 5 is connected with 2.4G wireless video receiving circuit module 6,315M or 433M radiating circuit module 7, synchronizing separator circuit module 8 and liquid crystal display drive circuit module 9 respectively; Synchronizing separator circuit module 8 is connected with 2.4G wireless video receiving circuit module 6 with front end microprocessor 5 respectively; Liquid crystal display drive circuit module 9 is connected with display screen 4, front end microprocessor 5 and 2.4G wireless video receiving circuit module 6; System rear end 2 is provided with rear end mainboard 10 and video capture circuit module 11; Rear end mainboard 10 is provided with rear end microprocessor 12,315M or 433M receiving circuit module 13 and 2.4G wireless video radiating circuit module 14; Rear end microprocessor 12 is connected with 2.4G wireless video radiating circuit module 14 with 315M or 433M receiving circuit module 13 respectively, and 2.4G wireless video radiating circuit module 14 is connected with video capture circuit module 11.Described display screen 4 is the TFT LCDs.Described video capture circuit module 11 is a camera.Described liquid crystal display drive circuit module 9 is a lcd drive chip.
The present invention is installed on the automobile, and system front end is contained in the driver's cabin, and the system rear end is contained in automobile tail.During reversing, first energized, system front end and system rear end switch on simultaneously.The video capture circuit module also is a camera, starts working after the energising, takes the situation at vehicle body rear.After the energising, the front end microprocessor is that 2.4G wireless video receiving circuit module is set initial frequency according to the address code of this covering device, and 315M or 433M receiving circuit are started working simultaneously, prepares to receive control signal;
If initial frequency does not have occupied (promptly not having other wireless video backing systems using this frequency to carry out wireless transmission), the front end microprocessor sends control command signal through 315M or 433M radiating circuit module; If initial frequency is occupied; The front end microprocessor is set at 2.4G wireless receiving working frequency points with next frequency; Between 4 frequencies, move in circles, up to finding one not have occupied frequency, the control command signal of front end microprocessor is sent through 315M or 433M transtation mission circuit module;
The 315M of system rear end or 433M receiving circuit module receive the control command signal (having only the system front end of this covering device to control the system rear end) that the front end microprocessor sends; The rear end microprocessor is handled the control command signal that receives; Set working frequency points according to control command signal; Start 2.4G wireless video radiating circuit module, the 2.4G wireless video receiving circuit of system front end is received composite video signal.
The synchronizing separator circuit module is carried out separated in synchronization to the composite video signal of receiving, the front end microprocessor is monitored have or not vision signal indication and isolated synchronizing signal that the liquid crystal display drive circuit module provides.If liquid crystal display drive circuit module indication has vision signal, then vision signal is sent on the display screen, and the driver can learn the situation behind the vehicle body from display screen.
Front end microprocessor in a single day note abnormalities (signal disturb or get two or more radio stations at once) with frequency; Switch frequency at once; Send control command signal; The 315M of system rear end or 433M receiving circuit module receive control command signal, and the rear end microprocessor is set working frequency points once more according to control command, start 2.4G wireless video radiating circuit module simultaneously.
The liquid crystal display drive circuit module is a lcd drive chip; Can driving be provided for TFT LCDs (TFT LCD); Provide simultaneously and have or not video high-low level signal indication, provide with special-purpose drive circuit and have or not vision signal to indicate to improve the speed that the present invention gets into operating state.
Claims (4)
1. self-adaptive wireless video backing system; Comprise system front end and system rear end; It is characterized in that: system front end is provided with front end mainboard and display screen; The front end mainboard is provided with front end microprocessor, 2.4G wireless video receiving circuit module, 315M or 433M radiating circuit module, synchronizing separator circuit module and liquid crystal display drive circuit module; The front end microprocessor is connected with 2.4G wireless video receiving circuit module, 315M or 433M radiating circuit module, synchronizing separator circuit module and liquid crystal display drive circuit module respectively; The synchronizing separator circuit module is connected with 2.4G wireless video receiving circuit module with the front end microprocessor respectively; The liquid crystal display drive circuit module is connected with display screen, front end microprocessor and 2.4G wireless video receiving circuit module, and the system rear end is provided with rear end mainboard and video capture circuit module, and the rear end mainboard is provided with rear end microprocessor, 315M or 433M receiving circuit module and 2.4G wireless video radiating circuit module; The rear end microprocessor is connected with 2.4G wireless video radiating circuit module with 315M or 433M receiving circuit module respectively; 2.4G wireless video radiating circuit module is connected with the video capture circuit module, 315M or 433M emission, receiving circuit module are used for sending the reception control command signal, and the synchronizing separator circuit module is carried out separated in synchronization to the composite video signal of receiving; The front end microprocessor is monitored have or not vision signal indication and isolated synchronizing signal that the liquid crystal display drive circuit module provides; In a single day the front end microprocessor notes abnormalities, and switches frequency, sends control command signal at once; The rear end microprocessor is set working frequency points once more according to control command, starts 2.4G wireless video radiating circuit module simultaneously.
2. a kind of self-adaptive wireless video backing system as claimed in claim 1 is characterized in that: described display screen is the TFT LCDs.
3. a kind of self-adaptive wireless video backing system as claimed in claim 1 is characterized in that: described video capture circuit module is a camera.
4. a kind of self-adaptive wireless video backing system as claimed in claim 1 is characterized in that: described liquid crystal display drive circuit module is a lcd drive chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100388929A CN101605245B (en) | 2008-06-12 | 2008-06-12 | Self-adaptive wireless video backing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100388929A CN101605245B (en) | 2008-06-12 | 2008-06-12 | Self-adaptive wireless video backing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101605245A CN101605245A (en) | 2009-12-16 |
| CN101605245B true CN101605245B (en) | 2012-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100388929A Expired - Fee Related CN101605245B (en) | 2008-06-12 | 2008-06-12 | Self-adaptive wireless video backing system |
Country Status (1)
| Country | Link |
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| CN (1) | CN101605245B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2506030Y (en) * | 2001-08-07 | 2002-08-14 | 峰鼎电子股份有限公司 | Radio type monitoring device for back running car |
| US6542182B1 (en) * | 2000-11-21 | 2003-04-01 | Lear Corporation | System for displaying an area outside a normal viewing area to a vehicle driver |
| CN1744140A (en) * | 2004-09-03 | 2006-03-08 | 侯康 | Long-distance visual anti-theft alarming system and its anti-theft alarming method |
| CN1912649A (en) * | 2005-08-10 | 2007-02-14 | 关富宏 | Radio video vehicle back radar |
| CN101009492A (en) * | 2007-01-16 | 2007-08-01 | 吴中活 | Wireless microphone system |
| CN201051143Y (en) * | 2007-05-22 | 2008-04-23 | 东莞德英电子通讯设备有限公司 | Radio car backing monitoring device |
-
2008
- 2008-06-12 CN CN2008100388929A patent/CN101605245B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6542182B1 (en) * | 2000-11-21 | 2003-04-01 | Lear Corporation | System for displaying an area outside a normal viewing area to a vehicle driver |
| CN2506030Y (en) * | 2001-08-07 | 2002-08-14 | 峰鼎电子股份有限公司 | Radio type monitoring device for back running car |
| CN1744140A (en) * | 2004-09-03 | 2006-03-08 | 侯康 | Long-distance visual anti-theft alarming system and its anti-theft alarming method |
| CN1912649A (en) * | 2005-08-10 | 2007-02-14 | 关富宏 | Radio video vehicle back radar |
| CN101009492A (en) * | 2007-01-16 | 2007-08-01 | 吴中活 | Wireless microphone system |
| CN201051143Y (en) * | 2007-05-22 | 2008-04-23 | 东莞德英电子通讯设备有限公司 | Radio car backing monitoring device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101605245A (en) | 2009-12-16 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120718 Termination date: 20200612 |
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| CF01 | Termination of patent right due to non-payment of annual fee |