CN102572392A - Digital signal processor (DSP)-based wired and wireless transmission digital video acquisition system - Google Patents
Digital signal processor (DSP)-based wired and wireless transmission digital video acquisition system Download PDFInfo
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- CN102572392A CN102572392A CN2011104313069A CN201110431306A CN102572392A CN 102572392 A CN102572392 A CN 102572392A CN 2011104313069 A CN2011104313069 A CN 2011104313069A CN 201110431306 A CN201110431306 A CN 201110431306A CN 102572392 A CN102572392 A CN 102572392A
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- saa7120h
- saa7111a
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Abstract
The invention provides a digital signal processor (DSP)-based wired and wireless transmission digital video acquisition system. The system comprises an analogue/digital (A/D) video input chip SAA7111A, a D/A video output chip SAA7120H, an inter-integrated circuit (I2C) bus, a 39VF800 type FLASH memory, a data memory and a controller area network (CAN) bus, all of which are connected with a control chip TMS320VC5402, wherein the A/D video input chip SAA7111A and the D/A video output chip SAA7120H are connected with the I2C bus. The system has a simple circuit and real-time processing capability, is low in cost, and can output an analogue signal which can be directly used for analogue display.
Description
Technical field
The present invention relates to electronic technology field, provides a kind of based on the wired of DSP and wireless transmission digital video acquisition system.
Background technology
Video acquisition is the problem of obtaining that solves video information, and video acquisition and processing system mainly is divided into two kinds on acquisition mode at present:
First kind of collection of adopting special picture decoding chip to accomplish image automatically, the time that processor is taken is few.But shortcoming is its grey scale accuracy to be restricted in the special image acquisition chip, and the video signal video adaptability that generally can only gather standard is bad, generally adopts CPLD (CPLD) to control, and integrated level is low, complicated circuit, and cost is high.
Second kind, to adopt and look screen special external high-speed A, decoding is accomplished through logical device, and the interface of processor requirement and outside AD converter is also stored data.Shortcoming is to carry out precision control to clock signal, and processing capability in real time is poor.Complicated circuit, cost is high.
Summary of the invention
The objective of the invention is to the deficiency to prior art, provide a kind of circuit simple, with low cost, can handle in real time based on the wired of DSP and wireless transmission digital video acquisition system.
The present invention is for realizing that above-mentioned purpose adopts following technical scheme:
A kind of based on the wired of DSP and wireless transmission digital video acquisition system, it is characterized in that comprising:
Control chip TMS320VC5402: control each module co-ordination and to the processing of data;
A/D video input chip SAA7111A: with the COMS camera collection to the simulation model convert digital signal to;
D/A video pio chip SAA7120H: be converted into analog video signal to the digital video signal after handling again, send common conformable display to;
12C bus: adopt chip PCF8584 as the 12C bus control unit, A/D video input chip SAA7111A and D/A video pio chip SAA7120H are carried out initialization;
39VF800 model FLASH memory: program storage;
Data storage: be used for the video information that storage of collected arrives, adopt 4 HM628512 to constitute the expansion of 1M * 16bit;
The CAN bus: be used for communicating by letter of native system and other system, its composition comprises controller SJA1000, and controller SJA1000 is connected with control chip TMS320VC5402;
GPRS module: be used for sending the video data that collects to PC through wireless network;
Said A/D video input chip SAA7111A, D/A video pio chip SAA7120H, 12C bus, 39VF800 model FLASH memory, data storage, CAN bus all are connected with control chip TMS320VC5402, and said A/D video input chip SAA7111A is connected with the 12C bus with D/A video pio chip SAA7120H.
The present invention has following beneficial effect:
One, circuit of the present invention is simple, and is with low cost, can handle in real time, and the analog signal of output can directly supply simulation to show to use.
Two, the present invention adopts wired and wireless 2 kinds of video signal transmission modes, makes whole system conveniently be suitable for and various environment.
Description of drawings
Fig. 1 is a system construction drawing of the present invention.
Embodiment
A kind of based on the wired of DSP and wireless transmission digital video acquisition system, it is characterized in that comprising:
Control chip TMS320VC5402: control each module co-ordination and to the processing of data;
A/D video input chip SAA7111A: with the COMS camera collection to the simulation model convert digital signal to;
D/A video pio chip SAA7120H: be converted into analog video signal to the digital video signal after handling again, send common conformable display to;
12C bus: adopt chip PCF8584 as the 12C bus control unit, A/D video input chip SAA7111A and D/A video pio chip SAA7120H are carried out initialization;
39VF800 model FLASH memory: program storage;
Data storage: be used for the video information that storage of collected arrives, adopt 4 HM628512 to constitute the expansion of 1M * 16bit;
The CAN bus: be used for communicating by letter of native system and other system, its composition comprises controller SJA1000, and controller SJA1000 is connected with control chip TMS320VC5402;
GPRS module: be used for sending the video data that collects to PC through wireless network;
Said A/D video input chip SAA7111A, D/A video pio chip SAA7120H, 12C bus, 39VF800 model FLASH memory, data storage, CAN bus all are connected with control chip TMS320VC5402, and said A/D video input chip SAA7111A is connected with the 12C bus with D/A video pio chip SAA7120H.
Claims (1)
1. one kind based on the wired of DSP and wireless transmission digital video acquisition system, it is characterized in that comprising:
Control chip TMS320VC5402: control each module co-ordination and to the processing of data;
A/D video input chip SAA7111A: with the COMS camera collection to the simulation model convert digital signal to;
D/A video pio chip SAA7120H: be converted into analog video signal to the digital video signal after handling again, send common conformable display to;
12C bus: adopt chip PCF8584 as the 12C bus control unit, A/D video input chip SAA7111A and D/A video pio chip SAA7120H are carried out initialization;
39VF800 model FLASH memory: program storage;
Data storage: be used for the video information that storage of collected arrives, adopt 4 HM628512 to constitute the expansion of 1M * 16bit;
The CAN bus: be used for communicating by letter of native system and other system, its composition comprises controller SJA1000, and controller SJA1000 is connected with control chip TMS320VC5402;
GPRS module: be used for sending the video data that collects to PC through wireless network;
Said A/D video input chip SAA7111A, D/A video pio chip SAA7120H, 12C bus, 39VF800 model FLASH memory, data storage, CAN bus all are connected with control chip TMS320VC5402, and said A/D video input chip SAA7111A is connected with the 12C bus with D/A video pio chip SAA7120H.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104313069A CN102572392A (en) | 2011-12-21 | 2011-12-21 | Digital signal processor (DSP)-based wired and wireless transmission digital video acquisition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011104313069A CN102572392A (en) | 2011-12-21 | 2011-12-21 | Digital signal processor (DSP)-based wired and wireless transmission digital video acquisition system |
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| CN102572392A true CN102572392A (en) | 2012-07-11 |
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| CN2011104313069A Pending CN102572392A (en) | 2011-12-21 | 2011-12-21 | Digital signal processor (DSP)-based wired and wireless transmission digital video acquisition system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107041020A (en) * | 2017-04-13 | 2017-08-11 | 安徽新宇生态园林股份有限公司 | A kind of urban landscaping information management system |
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| CN201237824Y (en) * | 2008-07-22 | 2009-05-13 | 北京康达永宜科技有限公司 | Intelligent monitoring alarm system for oil well |
| CN201860384U (en) * | 2010-08-02 | 2011-06-08 | 华南师范大学 | Video encryption camera |
| CN202424914U (en) * | 2011-12-21 | 2012-09-05 | 成都众询科技有限公司 | Digital video acquisition system based on wire transmission and wireless transmission of DSP (digital signal processor) |
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2011
- 2011-12-21 CN CN2011104313069A patent/CN102572392A/en active Pending
Patent Citations (4)
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| CN201237824Y (en) * | 2008-07-22 | 2009-05-13 | 北京康达永宜科技有限公司 | Intelligent monitoring alarm system for oil well |
| CN101415113A (en) * | 2008-11-21 | 2009-04-22 | 深圳市共进电子有限公司 | Apparatus for transmitting and monitoring remote network video based on WiMax wireless network |
| CN201860384U (en) * | 2010-08-02 | 2011-06-08 | 华南师范大学 | Video encryption camera |
| CN202424914U (en) * | 2011-12-21 | 2012-09-05 | 成都众询科技有限公司 | Digital video acquisition system based on wire transmission and wireless transmission of DSP (digital signal processor) |
Non-Patent Citations (1)
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| 张海涛等: "基于DM642的图像处理系统设计及应用", 《现代电子技术》 * |
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| CN107041020A (en) * | 2017-04-13 | 2017-08-11 | 安徽新宇生态园林股份有限公司 | A kind of urban landscaping information management system |
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Application publication date: 20120711 |