CN102438106A - Video acquisition system - Google Patents
Video acquisition system Download PDFInfo
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- CN102438106A CN102438106A CN2011104313196A CN201110431319A CN102438106A CN 102438106 A CN102438106 A CN 102438106A CN 2011104313196 A CN2011104313196 A CN 2011104313196A CN 201110431319 A CN201110431319 A CN 201110431319A CN 102438106 A CN102438106 A CN 102438106A
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Abstract
The invention provides a video acquisition system, which comprises an analog to digital (A/D) video input chip SAA7113, a coder-and-decoder chip ASICVW2010, an A/D video output chip SAA7121, a joint test action group (JTAG) interface, a system power supply, a secure digital (SD) memory card, a synchronous dynamic random access memory (SDRAM), and a Flash memory, which are connected with a master core unit S3C2410, wherein the A/D video input chip SAA7113 and the A/D video output chip SAA7121 are connected with the coder-and-decoder chip ASICVW2010. The system has the advantages that: the circuit is simple, the cost is low, real-time processing can be realized and an output analog signal can be directly used for analog display.
Description
Technical field
The present invention relates to field of electric control, a kind of video acquisition system
is provided.
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 deficiency, a kind of video acquisition system based on S3C2410 that a kind of circuit is simple, with low cost, can handle in real time is provided to prior art.
The present invention is for realizing that above-mentioned purpose adopts following technical scheme:
A kind of video acquisition system is characterized in that comprising:
Simulation camera: gather video data;
A/D video input chip SAA7113: with camera collection to vision signal convert digital video signal into,
Encoding and decoding ASICVW2010: the compression coding vision signal, convert vision signal into the MPEG-4 form,
D/A video pio chip SAA7121: will pass through digital video signal and convert analog video signal into,
S3C2410 master control core cell: to the control of the system data flow direction and the control and the management of peripheral module.
Jtag interface: and the serial communication between PC.
System power supply: be the whole system power supply;
SD card storage: be used for the video information that storage of collected arrives;
SDRAM memory: as storage and the operation and the dynamic buffering space of program;
FLASH memory: mainly stored operating system nucleus and root file system;
Said A/D video input chip SAA7113, encoding and decoding ASICVW2010, A/D video pio chip SAA7121, jtag interface, system power supply, the storage of SD card, SDRAM memory all are connected with S3C2410 master control core cell with the FLASH memory;
Said simulation camera sends the video data that collects to; After A/D video input chip SAA7113 carries out obtaining after analog-to-digital conversion and the decoding the unpressed ITU656 digital video signal that meets encoding and decoding ASICVW2010 video interface standard; Give encoding and decoding ASICVW2010; ASICVW2010 compression coding vision signal; Convert vision signal into the MPEG-4 form; Under the control of S3C2410 master control core cell, on the one hand deposit the video data behind the compressed encoding in the SD card with the form of file then and realize local storage, on the other hand video data is outputed to D/A video pio chip SAA7121 and carry out digital-to-analogue conversion, obtain the analog video signal that supplies conformable display to use.
The present invention has following beneficial effect:
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.
Description of drawings
Fig. 1 is a system block diagram of the present invention.
Embodiment
A kind of video acquisition system is characterized in that comprising:
Simulation camera: gather video data;
A/D video input chip SAA7113: with camera collection to vision signal convert digital video signal into,
Encoding and decoding ASICVW2010: the compression coding vision signal, convert vision signal into the MPEG-4 form,
D/A video pio chip SAA7121: will pass through digital video signal and convert analog video signal into,
S3C2410 master control core cell: to the control of the system data flow direction and the control and the management of peripheral module.
Jtag interface: and the serial communication between PC.
System power supply: be the whole system power supply;
SD card storage: be used for the video information that storage of collected arrives;
SDRAM memory: as storage and the operation and the dynamic buffering space of program;
FLASH memory: mainly stored operating system nucleus and root file system;
Said A/D video input chip SAA7113, encoding and decoding ASICVW2010, A/D video pio chip SAA7121, jtag interface, system power supply, the storage of SD card, SDRAM memory all are connected with S3C2410 master control core cell with the FLASH memory;
Said simulation camera sends the video data that collects to; After A/D video input chip SAA7113 carries out obtaining after analog-to-digital conversion and the decoding the unpressed ITU656 digital video signal that meets encoding and decoding ASICVW2010 video interface standard; Give encoding and decoding ASICVW2010; ASICVW2010 compression coding vision signal; Convert vision signal into the MPEG-4 form; Under the control of S3C2410 master control core cell, on the one hand deposit the video data behind the compressed encoding in the SD card with the form of file then and realize local storage, on the other hand video data is outputed to D/A video pio chip SAA7121 and carry out digital-to-analogue conversion, obtain the analog video signal that supplies conformable display to use.
Claims (1)
1. video acquisition system is characterized in that comprising:
Simulation camera: gather video data;
A/D video input chip SAA7113: with camera collection to vision signal convert digital video signal into,
Encoding and decoding ASICVW2010: the compression coding vision signal, convert vision signal into the MPEG-4 form,
D/A video pio chip SAA7121: will pass through digital video signal and convert analog video signal into,
S3C2410 master control core cell: to the control of the system data flow direction and the control and the management of peripheral module;
Jtag interface: and the serial communication between PC;
System power supply: be the whole system power supply;
SD card storage: be used for the video information that storage of collected arrives;
SDRAM memory: as storage and the operation and the dynamic buffering space of program;
FLASH memory: mainly stored operating system nucleus and root file;
Said A/D video input chip SAA7113, encoding and decoding ASICVW2010, A/D video pio chip SAA7121, jtag interface, system power supply, the storage of SD card, SDRAM memory all are connected with S3C2410 master control core cell with the FLASH memory, and said A/D video input chip SAA7113 is connected with encoding and decoding ASICVW2010 with A/D video pio chip SAA7121;
Said simulation camera sends the video data that collects to; After A/D video input chip SAA7113 carries out obtaining after analog-to-digital conversion and the decoding the unpressed ITU656 digital video signal that meets encoding and decoding ASICVW2010 video interface standard; Give encoding and decoding ASICVW2010; ASICVW2010 compression coding vision signal; Convert vision signal into the MPEG-4 form; Under the control of S3C2410 master control core cell, on the one hand deposit the video data behind the compressed encoding in the SD card with the form of file then and realize local storage, on the other hand video data is outputed to D/A video pio chip SAA7121 and carry out digital-to-analogue conversion, obtain the analog video signal that supplies conformable display to use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104313196A CN102438106A (en) | 2011-12-21 | 2011-12-21 | Video acquisition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104313196A CN102438106A (en) | 2011-12-21 | 2011-12-21 | Video acquisition system |
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| CN102438106A true CN102438106A (en) | 2012-05-02 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103241A (en) * | 2014-08-04 | 2014-10-15 | 上海斐讯数据通信技术有限公司 | LED (Light Emitting Diode) display screen control system based on ARM (Asynchronous Response Mode) processor |
| CN105427513A (en) * | 2015-11-20 | 2016-03-23 | 华迪计算机集团有限公司 | Fire-proof video infrared monitoring system for large-area remote sensing forest |
| CN105939470A (en) * | 2015-12-24 | 2016-09-14 | 森玛特(天津)自动化技术有限公司 | Multi-angle three-dimensional image acquiring and processing control system |
| CN107450388A (en) * | 2017-06-29 | 2017-12-08 | 华中光电技术研究所（中国船舶重工集团公司第七七研究所） | A kind of small-sized man-machine aobvious control platform based on flush type LINUX operating system |
| CN107948614A (en) * | 2017-12-29 | 2018-04-20 | 北京九方广维科技有限公司 | A kind of video signal transmission system and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103241A (en) * | 2014-08-04 | 2014-10-15 | 上海斐讯数据通信技术有限公司 | LED (Light Emitting Diode) display screen control system based on ARM (Asynchronous Response Mode) processor |
| CN105427513A (en) * | 2015-11-20 | 2016-03-23 | 华迪计算机集团有限公司 | Fire-proof video infrared monitoring system for large-area remote sensing forest |
| CN105939470A (en) * | 2015-12-24 | 2016-09-14 | 森玛特(天津)自动化技术有限公司 | Multi-angle three-dimensional image acquiring and processing control system |
| CN107450388A (en) * | 2017-06-29 | 2017-12-08 | 华中光电技术研究所（中国船舶重工集团公司第七七研究所） | A kind of small-sized man-machine aobvious control platform based on flush type LINUX operating system |
| CN107948614A (en) * | 2017-12-29 | 2018-04-20 | 北京九方广维科技有限公司 | A kind of video signal transmission system and method |
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Application publication date: 20120502 |