CN204465758U - A kind of Video Decoder - Google Patents
A kind of Video Decoder Download PDFInfo
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- CN204465758U CN204465758U CN201520224479.7U CN201520224479U CN204465758U CN 204465758 U CN204465758 U CN 204465758U CN 201520224479 U CN201520224479 U CN 201520224479U CN 204465758 U CN204465758 U CN 204465758U
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- video decoder
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Abstract
The utility model relates to a kind of decoder, more specifically to a kind of Video Decoder, is applied to the decoding of H.264 code stream, and can blocking effect after removal of images process, improves the definition of image.Sound card is used for the transmitted in both directions of voice signal.Video frequency collection card is used for the transmitted in both directions of picture signal.Block elimination effect filter to be had ready conditions filtering to needing the border of filtering, for removing the border distortion that H.264 code stream block processing procedure produces, improves pixel.Buffer is as the data buffer storage in filter process, and processor data in direct access cache device in filtering, reduce the clock periodicity needed for processor.Processor arranges the reserved of memory headroom and distributes, authority data type.PC end be used for optimized processor, and for video-stream processor transmission vision signal.Utilize Ethernet chip, the video in processor can networking transport to long-range receiving terminal, extending video transmission channel.
Description
Technical field
The utility model relates to a kind of decoder, more specifically to a kind of Video Decoder.
Background technology
Multimedia communication terminal is with a wide range of applications, and can be applied to video conference, video telephone, the every field such as video conference and Digital Television.The research of the communication terminal device of high efficient and reliable is a hot topic always.The realization of multimedia communication terminal needs 2 key elements: a kind of is the hardware platform of supported data communication, and a kind of is the communication protocol of standard.At present along with the development of dsp processor, provide possibility for realizing efficient audio frequency and video process, and the appearance of the H.264 video compression standard of code stream, provide suitable algorithm standard rules, design a kind of decoder, be applied to the decoding of H.264 streaming video.
Summary of the invention
The technical problem that the utility model mainly solves is: provide a kind of Video Decoder, is applied to the decoding of H.264 code stream, and can blocking effect after removal of images process, improves the definition of image.
For solving the problems of the technologies described above, the utility model relates to a kind of decoder, more specifically to a kind of Video Decoder, comprise sound card, video frequency collection card, block elimination effect filter, buffer, processor, pci bus, PC end, memory, JTAG emulation interface and Ethernet chip, be applied to the decoding of H.264 code stream, and can blocking effect after removal of images process, improve the definition of image.
Sound card is used for the transmitted in both directions of voice signal.Video frequency collection card is used for the transmitted in both directions of picture signal.Block elimination effect filter to be had ready conditions filtering to needing the border of filtering, for removing the border distortion that H.264 code stream block processing procedure produces, improves pixel.Buffer as the data buffer storage in filter process, processor data in direct access cache device in filtering, reduce needed for processor clock periodicity.Processor arranges the reserved of memory headroom and distributes, and authority data type, realizes the decoding of H.264 code stream, realizes the real-time process of video image.Pci bus is as the data transmission channel between PC end and processor.PC end be used for optimized processor, and for video-stream processor transmission vision signal.Memory is as the extension storage unit of processor, and storage of processor inputs data.JTAG emulation interface as the expansion interface of functional processor, for follow-up artificial debugging provides interface.Utilize Ethernet chip, the video in processor can networking transport to long-range receiving terminal, extending video transmission channel.
As the further optimization of this programme, the sound card that the sound card described in a kind of Video Decoder of the utility model adopts Creative Technology Ltd. to produce, its model is SBO610.
As the further optimization of this programme, the video frequency collection card that the video frequency collection card described in a kind of Video Decoder of the utility model selects Tian Min Co., Ltd to produce, its model is SDK3000.
As the further optimization of this programme, the processor that the processor described in a kind of Video Decoder of the utility model selects Texas Instrument to produce, its model is C6416.
As the further optimization of this programme, the Ethernet chip that the Ethernet chip described in a kind of Video Decoder of the utility model selects Mai Rui Semiconductor Co., Ltd to produce, its model is KSZ8721BL.
The beneficial effect of a kind of Video Decoder of the utility model is:
A. can decode to H.264 code stream;
B. improve the definition of video.
Accompanying drawing explanation
Fig. 1 is the system block diagram of a kind of Video Decoder of the utility model.
Embodiment
In FIG, the utility model relates to a kind of decoder, more specifically to a kind of Video Decoder, comprise sound card, video frequency collection card, block elimination effect filter, buffer, processor, pci bus, PC end, memory, JTAG emulation interface and Ethernet chip, be applied to the decoding of H.264 code stream, and can blocking effect after removal of images process, improve the definition of image.
Sound card is used for the transmitted in both directions of voice signal.The sound card that sound card adopts Creative Technology Ltd. to produce, its model is SBO610.SBO610 provides two-way dual-channel audio to export, and has stereo interface, by the voice signal input collected.
Video frequency collection card is used for the transmitted in both directions of picture signal.The video frequency collection card that video frequency collection card selects Tian Min Co., Ltd to produce, its model is SDK3000.At input, SDK3000 gathers the analog video signal of Phase Alternation Line system or TSC-system, and analog signal is converted into digital signal.The digital data transmission transformed is to processor.
Block elimination effect filter to be had ready conditions filtering to needing the border of filtering, for removing the border distortion that H.264 code stream block processing procedure produces, improves pixel.H.264 coding is block-based coded system, and the coding of each block is separate, and due to prediction, compensate, change and quantification etc. cause boundary between block and block discontinuous.Block elimination effect filter is filter mode in loop, using filtered frame as prediction reference frame below, to have ready conditions filtering to needing the macroblock boundaries of filtering.Block elimination effect filter first carries out filtering to vertical boundary, carries out filtering to horizontal boundary afterwards, and after vertical boundary filtering and horizontal boundary filtering complete, ability carries out filtering process to next macro block.
Buffer as the data buffer storage in filter process, processor data in direct access cache device in filtering, reduce needed for processor clock periodicity.When filtering converts from vertical boundary to horizontal boundary, the memory access conveniently in filtering, utilizes buffer buffer memory intermediate data, and the pixel obtaining a row or column after adopting buffer needs 1 clock cycle, otherwise needs 4 clock cycle.
Processor arranges the reserved of memory headroom and distributes, and authority data type, realizes the decoding of H.264 code stream, realizes the real-time process of video image.The processor that processor selects Texas Instrument to produce, its model is C6416.C6416 is a dsp processor.Pci bus is as the data transmission channel between PC end and processor.PC end be used for optimized processor, and for video-stream processor transmission vision signal.In C6416, project level optimization is carried out to signal, complete the parallel processing of vision signal, the reading time can be saved, improve the speed of Video processing.Memory is as the extension storage unit of processor, and storage of processor inputs data.Memory is that processor device provides memory headroom and Memory Distribution Map flexibly.Improve the flexibility of processor.
JTAG emulation interface as the expansion interface of functional processor, for follow-up artificial debugging provides interface.The Ethernet chip that Ethernet chip selects Mai Rui Semiconductor Co., Ltd to produce, its model is KSZ8721BL.Utilize Ethernet chip, the video in processor can networking transport to long-range receiving terminal, extending video transmission channel.KSZ8721BL by Signal transmissions to remote port, can realize video conference, the communication functions such as video telephone after connecting ethernet line.
Certain above-mentioned explanation is not limitation of the utility model; the utility model is also not limited only to above-mentioned citing; the change that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement, also belong to protection range of the present utility model.
Claims (5)
1. a Video Decoder, comprise sound card, video frequency collection card, block elimination effect filter, buffer, processor, pci bus, PC end, memory, JTAG emulation interface and Ethernet chip, it is characterized in that: sound card is used for the transmitted in both directions of voice signal; Video frequency collection card is used for the transmitted in both directions of picture signal; Block elimination effect filter to be had ready conditions filtering to needing the border of filtering, for removing the border distortion that H.264 code stream block processing procedure produces, improves pixel; Buffer as the data buffer storage in filter process, processor data in direct access cache device in filtering, reduce needed for processor clock periodicity; Processor arranges the reserved of memory headroom and distributes, and authority data type, realizes the decoding of H.264 code stream, realizes the real-time process of video image; Pci bus is as the data transmission channel between PC end and processor; PC end be used for optimized processor, and for video-stream processor transmission vision signal; Memory is as the extension storage unit of processor, and storage of processor inputs data; JTAG emulation interface as the expansion interface of functional processor, for follow-up artificial debugging provides interface; Utilize Ethernet chip, the video in processor can networking transport to long-range receiving terminal, extending video transmission channel.
2. a kind of Video Decoder according to claim 1, is characterized in that: the sound card that described sound card adopts Creative Technology Ltd. to produce, its model is SBO610.
3. a kind of Video Decoder according to claim 1, is characterized in that: the video frequency collection card that described video frequency collection card selects Tian Min Co., Ltd to produce, and its model is SDK3000.
4. a kind of Video Decoder according to claim 1, is characterized in that: the processor that described processor selects Texas Instrument to produce, its model is C6416.
5. a kind of Video Decoder according to claim 1, is characterized in that: the Ethernet chip that described Ethernet chip selects Mai Rui Semiconductor Co., Ltd to produce, and its model is KSZ8721BL.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520224479.7U CN204465758U (en) | 2015-04-14 | 2015-04-14 | A kind of Video Decoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520224479.7U CN204465758U (en) | 2015-04-14 | 2015-04-14 | A kind of Video Decoder |
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| Publication Number | Publication Date |
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| CN204465758U true CN204465758U (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520224479.7U Expired - Fee Related CN204465758U (en) | 2015-04-14 | 2015-04-14 | A kind of Video Decoder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106447599A (en) * | 2015-08-11 | 2017-02-22 | 瑞萨电子株式会社 | Semiconductor device |
| CN107155109A (en) * | 2017-03-31 | 2017-09-12 | 武汉斗鱼网络科技有限公司 | The filtering method and device of a kind of frame of video |
-
2015
- 2015-04-14 CN CN201520224479.7U patent/CN204465758U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106447599A (en) * | 2015-08-11 | 2017-02-22 | 瑞萨电子株式会社 | Semiconductor device |
| CN106447599B (en) * | 2015-08-11 | 2021-10-08 | 瑞萨电子株式会社 | semiconductor device |
| CN107155109A (en) * | 2017-03-31 | 2017-09-12 | 武汉斗鱼网络科技有限公司 | The filtering method and device of a kind of frame of video |
| CN107155109B (en) * | 2017-03-31 | 2021-01-01 | 武汉斗鱼网络科技有限公司 | Filtering method and device for video frame |
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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 |
Granted publication date: 20150708 Termination date: 20160414 |
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| CF01 | Termination of patent right due to non-payment of annual fee |