CN202424914U - Digital video acquisition system based on wire transmission and wireless transmission of DSP (digital signal processor) - Google Patents
Digital video acquisition system based on wire transmission and wireless transmission of DSP (digital signal processor) Download PDFInfo
- Publication number
- CN202424914U CN202424914U CN 201120538452 CN201120538452U CN202424914U CN 202424914 U CN202424914 U CN 202424914U CN 201120538452 CN201120538452 CN 201120538452 CN 201120538452 U CN201120538452 U CN 201120538452U CN 202424914 U CN202424914 U CN 202424914U
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- China
- Prior art keywords
- video
- chip
- bus
- saa7120h
- saa7111a
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a digital video acquisition system based on wire transmission and wireless transmission of a DSP (digital signal processor), which comprises an A/D (analog/digital) video input chip SAA7111A, a D/A (digital/analog) video output chip SAA7120H, a 12C bus, a 39VF800 type FLASH memory, a data memory and a CAN (controller area network) bus which are all connected with a control chip TMS320VC5402. The A/D video input chip SAA7111A and the D/A video output chip SAA7120H are connected with the 12C bus. The digital video acquisition system based on wire transmission and wireless transmission of the DSP is simple in circuit, low in cost and capable of performing real-time processing, and outputted analog signals can be directly used for analog display.
Description
Technical field
The utility model 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.
The utility model content
The purpose of the utility model is 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 utility model 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 analog signal conversion become digital signal;
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 utlity model has following beneficial effect:
One, the utility model circuit 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 utility model 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 the system construction drawing of the utility model.
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 analog signal conversion become digital signal;
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 analog signal conversion become digital signal;
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 |
|---|---|---|---|
| CN 201120538452 CN202424914U (en) | 2011-12-21 | 2011-12-21 | Digital video acquisition system based on wire transmission and wireless transmission of DSP (digital signal processor) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120538452 CN202424914U (en) | 2011-12-21 | 2011-12-21 | Digital video acquisition system based on wire transmission and wireless transmission of DSP (digital signal processor) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202424914U true CN202424914U (en) | 2012-09-05 |
Family
ID=46749633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120538452 Expired - Fee Related CN202424914U (en) | 2011-12-21 | 2011-12-21 | Digital video acquisition system based on wire transmission and wireless transmission of DSP (digital signal processor) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202424914U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102572392A (en) * | 2011-12-21 | 2012-07-11 | 成都众询科技有限公司 | Digital signal processor (DSP)-based wired and wireless transmission digital video acquisition system |
-
2011
- 2011-12-21 CN CN 201120538452 patent/CN202424914U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102572392A (en) * | 2011-12-21 | 2012-07-11 | 成都众询科技有限公司 | Digital signal processor (DSP)-based wired and wireless transmission digital video acquisition system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20121221 |