CN104104844A - Digital video acquisition card - Google Patents
Digital video acquisition card Download PDFInfo
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- CN104104844A CN104104844A CN201310121754.8A CN201310121754A CN104104844A CN 104104844 A CN104104844 A CN 104104844A CN 201310121754 A CN201310121754 A CN 201310121754A CN 104104844 A CN104104844 A CN 104104844A
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- signal processor
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- data interaction
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Abstract
The invention discloses a digital video acquisition card which includes a high-speed A/D converter, a data interaction unit, a digital signal processor and a PCI bridge. An input end of the high-speed A/D converter is connected to an external simulating video signal generation end and output of the high-speed A/D converter is connected to the data interaction unit. An output end of the data interaction unit is connected to the digital signal processor. The PCI bridge is connected to the digital signal processor through a PCI bridge bonding logic unit. The digital signal processor is also connected with a communication state detection module. The beneficial effects of the digital video acquisition card are that digital video acquisition is completed and at the same time the digital video acquisition card also has an automatic real-time digital video processing function.
Description
Technical field
The present invention relates to a kind of Digital Video collection card.
Background technology
Video frequency collection card, " Video Capture Card ", its function be by video signal collective in computer, be kept on hard disk with the form of data file.It is that we carry out the requisite hardware device of Video processing, by it, the vision signal that we just can take video camera dumps in computer from camera tape, utilize relevant video editing software, to digitized vision signal carry out later stage compilation processing, such as shear picture, add filter ytterbium, captions and audio, transitions is set and adds various special video effects etc., the vision signal finally editor being completed converts the form such as VCD, DVD and web stream media of standard to, convenient propagation
Video frequency collection card, according to video signal source, can be divided into Data Acquisition Card (use digital interface) and analog acquisition card.Traditional Digital Video collection cartoon often only possesses video acquisition function, and does not possess video processing function.
Summary of the invention
Object of the present invention is to overcome the deficiency of present technology, and a kind of Digital Video collection card is provided, and overcomes existing Digital Video collection card and do not possess the shortcoming of video processing function.
The present invention is achieved through the following technical solutions: Digital Video collection card, comprise high-speed a/d converter, data interaction unit, digital signal processor and PCI bridge, the input of described high-speed a/d converter is connected to outside analog video signal and produces end, its output is connected to data interaction unit, the output of data interaction unit is connected to digital signal processor, PCI bridge is connected to digital signal processor by a PCI bridge adhesive logic unit, is also connected with a communications status detection module on digital signal processor.
Described data interaction unit comprises a FPGA and a dual port RAM, and the control end of FPGA is connected to data signal processor, and the output of dual port RAM is connected to digital signal processor.
Described digital signal processor adopts the chip that model is TMS320C6201.
On described digital signal processor, be connected with SDRAM memory and SBSRAM memory.
On described digital signal processor, be connected with a real-time clock (RTC) module.
The invention has the beneficial effects as follows: this device, in completing Digital Video collection, also possesses autonomous real-time digital video processing capacity.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but structure of the present invention is not limited only to following examples:
[embodiment]
As shown in Figure 1, Digital Video collection card, comprise high-speed a/d converter, data interaction unit, digital signal processor and PCI bridge, the input of described high-speed a/d converter is connected to outside analog video signal and produces end, its output is connected to data interaction unit, the output of data interaction unit is connected to digital signal processor, PCI bridge is connected to digital signal processor by a PCI bridge adhesive logic unit, is also connected with a communications status detection module on digital signal processor.
Described data interaction unit comprises a FPGA and a dual port RAM, and the control end of FPGA is connected to data signal processor, and the output of dual port RAM is connected to digital signal processor.
On described digital signal processor, be connected with SDRAM memory and SBSRAM memory, for storing intermediate object program data, final data and working procedure.
On described digital signal processor, be connected with a real-time clock (RTC) module, for be provided fiducial time.
In the present embodiment, high-speed a/d converter adopts the SAA7111 chip of PHILIP company; In data interaction unit, FPGA has the function to high-speed a/d converter control, comprise the start and stop of controlling sampling, the conversion of sampled data form etc., also there is the generation that control that dual port RAM data are write and data send interrupt signal, but also form the data path from high-speed a/d converter to dual port RAM, can realize on this basis the pretreated function of some data; Digital signal processor adopts the TMS320C6201 of TI company, this processor is applicable to graph and image processing, and its outer setting has memory interface EMIF, direct memory access passage DMA, multichannel buffered serial port McBSP, main frame mouth HPI and chip that pin, timer, interruption control, lower electric logic and GPIO etc. are set; It is AMCC S5933 chip that PCI bridge adopts model; PCI bridge adhesive logic unit adopts a complex programmable logic device (CPLD); Communications status module is for showing outward the interface communication situation of mainboard, and the present embodiment adopts LED lamp, and docking port communication conditions shows one by one.
In this enforcement, FPGA sets up after the data channel between dual port RAM and high-speed a/d converter, the digital signal that high-speed a/d converter converts analog video signal to sends in dual port RAM, when accepting data, dual port RAM also sends data to digital signal processor, digital signal processor, by after digital video signal processing, sends on host computer by PCI bridge.
Claims (5)
1. Digital Video collection card, it is characterized in that: comprise high-speed a/d converter, data interaction unit, digital signal processor and PCI bridge, the input of described high-speed a/d converter is connected to outside analog video signal and produces end, its output is connected to data interaction unit, the output of data interaction unit is connected to digital signal processor, PCI bridge is connected to digital signal processor by a PCI bridge adhesive logic unit, is also connected with a communications status detection module on digital signal processor.
2. Digital Video collection card according to claim 1, it is characterized in that: described data interaction unit comprises a FPGA and a dual port RAM, the control end of FPGA is connected to data signal processor, and the output of dual port RAM is connected to digital signal processor.
3. Digital Video collection card according to claim 1, is characterized in that: described digital signal processor adopts the chip that model is TMS320C6201.
4. Digital Video collection card according to claim 3, is characterized in that: on described digital signal processor, be connected with SDRAM memory and SBSRAM memory.
5. Digital Video collection card according to claim 4, is characterized in that: on described digital signal processor, be connected with a real-time clock (RTC) module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310121754.8A CN104104844A (en) | 2013-04-10 | 2013-04-10 | Digital video acquisition card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310121754.8A CN104104844A (en) | 2013-04-10 | 2013-04-10 | Digital video acquisition card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104104844A true CN104104844A (en) | 2014-10-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310121754.8A Pending CN104104844A (en) | 2013-04-10 | 2013-04-10 | Digital video acquisition card |
Country Status (1)
| Country | Link |
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| CN (1) | CN104104844A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106131591A (en) * | 2016-06-30 | 2016-11-16 | 广州华多网络科技有限公司 | Live broadcasting method, device and terminal |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09284806A (en) * | 1996-04-19 | 1997-10-31 | Hitachi Ltd | Video camera equipment |
| CN103067650A (en) * | 2013-01-28 | 2013-04-24 | 四川华通工程技术研究院 | Digital video acquisition card |
-
2013
- 2013-04-10 CN CN201310121754.8A patent/CN104104844A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09284806A (en) * | 1996-04-19 | 1997-10-31 | Hitachi Ltd | Video camera equipment |
| CN103067650A (en) * | 2013-01-28 | 2013-04-24 | 四川华通工程技术研究院 | Digital video acquisition card |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106131591A (en) * | 2016-06-30 | 2016-11-16 | 广州华多网络科技有限公司 | Live broadcasting method, device and terminal |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141015 |
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| WD01 | Invention patent application deemed withdrawn after publication |