CN201444682U - Video decoding device - Google Patents
Video decoding device Download PDFInfo
- Publication number
- CN201444682U CN201444682U CN 200920027095 CN200920027095U CN201444682U CN 201444682 U CN201444682 U CN 201444682U CN 200920027095 CN200920027095 CN 200920027095 CN 200920027095 U CN200920027095 U CN 200920027095U CN 201444682 U CN201444682 U CN 201444682U
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- video
- pci
- pcie
- chip
- video encoder
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Abstract
The utility model discloses a video decoding device, which has the advantages of simple structure, low cost and convenient use. The device comprises a PCIE interface, wherein the PCIE interface is connected with a PCI bus through a PCIE bridge, the PCI bus is connected with a group of PCI multimedia bridge chips, each PCI multimedia bridge chip is respectively connected with an independent video coder, each video coder outputs the independent compound video broadcasting signals after converting digital video into analog video.
Description
Technical field
The utility model relates to a kind of video decoder.
Background technology
Common video decode card in the existing market, it is decoded with dsp chip, the cost height.Decoding program is realized in DSP, is difficult to upgrading.Do not have the PCI-E interface, can not conform to development of computer.
Summary of the invention
The purpose of this utility model is exactly in order to address the above problem, provide a kind of have simple in structure, the video decoder of advantage such as cost is low, and is easy to use.
A kind of video decoder, it comprises a PCIE interface, the PCIE interface is connected with pci bus by the PCIE bridge, pci bus is connected with one group of PCI multimedia bridge chip, each PCI multimedia bridge chip is connected with separately video encoder respectively, each video encoder changes digital video into output video broadcast signal separately behind the analog video, the compound output of each video broadcast signal.
Described PCI multimedia bridge chip has four, and its model is SAA7146, and each chip output digital video stream BT.656 arrives each video encoder, and passes through I separately
2The corresponding video encoder of C bus initialization.
The utility model adopts the PCIE interface, and the PCI-PCIE bridge transfers pci bus to PCIE.On pci bus, articulate 4 SAA7146 (a chip of NXP company).SAA7146 is through access system internal memory behind the PCI-PCIE bridge, and the data of Installed System Memory are transported among the FIFO of SAA7146 inside.SAA7146 transfers the data among the FIFO to digital video frequency flow (BT.656) output.The digital video of SAA7146 output flows to video encoder.Video encoder transfers digital video to analog video, exports with composite video broadcast singal (CVBS).SAA7146 passes through I
2C bus initialization video encoder.
The beneficial effects of the utility model are: use PCI multimedia bridge chip to substitute dsp chip first, reduced cost.Utilize interchangeable soft decoding technique, realized the decoding of multiple compressed format.The decoding card uses the PCI-E interface first.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
1.PCLE interface, 2.PCIE bridge, 3.PCI bus, 4.PCI chip, 5. video encoder.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
Among Fig. 1, it comprises a PCIE interface 1, PCIE interface 1 is connected with pci bus 3 by PCIE bridge 2, pci bus 3 and one group of PCI multimedia bridge chip 4, each PCI multimedia bridge chip 4 is connected with separately video encoder 5 respectively, each video encoder 5 changes digital video into output video broadcast signal separately behind the analog video, the compound output of each video broadcast signal.Wherein PCI chip 4 has four, and its model is SAA7146, and each PCI multimedia bridge chip 4 output digital videos stream BT.656 arrives each video encoder 5, and passes through I separately
2The corresponding video encoder 5 of C bus initialization.
Claims (2)
1. video decoder, it is characterized in that, it comprises a PCIE interface, the PCIE interface is connected with pci bus by the PCIE bridge, pci bus is connected with one group of PCI multimedia bridge chip, each PCI multimedia bridge chip is connected with separately video encoder respectively, and each video encoder changes digital video into output video broadcast signal separately behind the analog video, the compound output of each video broadcast signal.
2. video decoder as claimed in claim 1 is characterized in that, described PCI multimedia bridge chip has four, and its model is SAA7146, and each chip output digital video stream BT.656 arrives each video encoder, and passes through I separately
2The corresponding video encoder of C bus initialization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920027095 CN201444682U (en) | 2009-06-19 | 2009-06-19 | Video decoding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920027095 CN201444682U (en) | 2009-06-19 | 2009-06-19 | Video decoding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201444682U true CN201444682U (en) | 2010-04-28 |
Family
ID=42549361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920027095 Expired - Fee Related CN201444682U (en) | 2009-06-19 | 2009-06-19 | Video decoding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201444682U (en) |
-
2009
- 2009-06-19 CN CN 200920027095 patent/CN201444682U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100428 Termination date: 20160619 |