CN101466030B - Set-top box and method for decoding video stream - Google Patents
Set-top box and method for decoding video stream Download PDFInfo
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- CN101466030B CN101466030B CN200710125200XA CN200710125200A CN101466030B CN 101466030 B CN101466030 B CN 101466030B CN 200710125200X A CN200710125200X A CN 200710125200XA CN 200710125200 A CN200710125200 A CN 200710125200A CN 101466030 B CN101466030 B CN 101466030B
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Abstract
The invention provides a set-top box, comprising a main control unit and an AVS decoding module, a dynamic access memory module, a flash module, an audio-video input processing module, an audio-video output processing module and a remote module. The AVS decoding module, the dynamic access memory module, flash module, the audio-video input processing module, the audio-video output processing module and the remote module are connected with the main control unit. The set-top box has the beneficial effects that: the set-top box is connected with the AVS decoding module by a PCI interface and an XIO interface, the functions are expanded in the set-top box which can only decode H.264 format, thus the video stream in AVS format can be decoded.
Description
Technical field
The invention belongs to the television set top box field, relate in particular to a kind of set-top box and method for decoding video stream.
Background technology
At present, set-top box is only with the video flowing of a kind of form of decoding, H.264 form as main flow, but can't the decode video flowing of AVS form, after the user has bought this set-top box, for the video flowing of AVS form, user's set-top box can't be decoded, and therefore can not watch the video frequency program of AVS form.
Summary of the invention
The object of the present invention is to provide a kind of set-top box and method for decoding video stream, be intended to solve in the prior art set-top box H.264 form of can only decoding, the problem of video flowing that can't encoding and decoding AVS form.
The present invention realizes like this, a kind of set-top box, comprise main control unit, the AVS decoder module, the dynamic random memory module, flash memory module, the audio frequency and video input processing module, audio frequency and video output processing module and remote controller module, described AVS decoder module, the dynamic random memory module, flash memory module, the audio frequency and video input processing module, the audio frequency and video output processing module all directly links to each other with main control unit with remote controller module, audio-video signal is input to the audio frequency and video input processing module, through outputing to the audio frequency and video output processing module after the described main control unit processing, wherein, described main control unit is not to being that the video flowing of AVS is directly decoded the back by the output of audio frequency and video output processing module, and the AVS video flowing is passed to the AVS decoder module decode, again decoded data read is returned, export decoded video stream by the audio frequency and video output processing module then.
Technical scheme of the present invention also comprises: described AVS decoder module connects main control unit by pci interface and XIO interface.
Technical scheme of the present invention also comprises: described AVS decoder module comprises AVS decoder, metadata cache, address caching and CTR buffer memory, and described AVS decoder links to each other with metadata cache, address caching, CTR buffer memory respectively.
Technical scheme of the present invention also comprises: described AVS decoder also links to each other with SDRAM.
Technical scheme of the present invention also comprises: described flash memory module is the flash memory module of 64M 8bit.
Technical scheme of the present invention also comprises: described dynamic random memory module is a 128M SDRAM chip.
Another technical scheme that the present invention taked comprises a kind of method for decoding video stream, steps A: main control unit is intercepted network packet, sign according to the Streaming Media type field of the packet in the video flowing judges whether the video flowing into AVS, and the AVS video flowing is sent to the AVS decoder module decode, if the packet that listens to is not the AVS video flowing, then main control unit is directly decoded to video flowing; Step B: main control unit reads decoded data by pci interface and XIO interface from the AVS decoder module; Step C: main control unit is exported decoded video streams by the audio frequency and video output module.
Technical scheme of the present invention has following advantage or beneficial effect: set-top box of the present invention and method for decoding video stream connect the AVS decoder module by pci interface and XIO interface, in the set-top box of form H.264 of can only decoding, expanded function, make the video flowing of its AVS form of can decoding, realized to support simultaneously H.264 and the AVS video stream format.
Feature of the present invention and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
Description of drawings
Fig. 1 is a set-top-box system structural representation of the present invention;
Fig. 2 is the structural representation of AVS decoder module in the set-top box of the present invention;
Fig. 3 is the flow chart of method for decoding video stream of the present invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer,, the embodiment of the invention is further elaborated below in conjunction with drawings and Examples.
See also Fig. 1, be the system configuration schematic diagram of set-top box of the present invention.Set-top box of the present invention mainly comprises main control unit, and the AVS decoder module that links to each other with main control unit.Main control unit connects the AVS decoder module by pci interface and XIO interface.
Except that above-mentioned main control unit and AVS decoder module, set-top box of the present invention also comprises necessary conventional module of set-top box or the interface such as dynamic random memory module, flash memory module, audio frequency and video input processing module, audio frequency and video output processing module, remote controller module and Man Machine Interface that does not illustrate in the drawings.Dynamic random memory module, flash memory module, audio frequency and video input processing module, audio frequency and video output processing module, remote controller module link to each other with main control unit respectively.Flash memory module is the flash memory module of 64M 8bit, and the dynamic random memory module is a 128M SDRAM chip.Audio-video signal is input to the audio frequency and video input processing module after handling by mould/number, handles outputing to the audio frequency and video output processing module accordingly through main control unit; Remote controller module is by I2C and main control unit communication, and remote controller module receives remote information, and information is sent to the main control unit processing.Main control unit also connects SATA controller, USB controller, ethernet controller and MINI pci interface by pci bus.
Set-top box of the present invention has realized following function: live telecast, time-moving television, information, online and VOD.Set-top box of the present invention has realized as lower interface: USB, PCI, Minipci, Sata, RJ45, RCA Video, RCAAudio, Scart, Hdmi, RS232 and HDMI interface etc.
See also Fig. 2, be the structural representation of the AVS decoder module of set-top box of the present invention.The AVS decoder module comprises AVS decoder, metadata cache, address caching and CTR buffer memory.The AVS decoder links to each other with metadata cache, address caching, CTR buffer memory respectively.Metadata cache connects the AVS decoder by data wire.The AVS decoder utilizes PCI partial bus signal, and XIO8_XIO15, XIO_SEL1 form the needed address of control AVS decoder, data and control signal.The communication of AVS decoder meets the FLASH/SRAM communication standard, and for to the AVS decoding video stream, the AVS decoder also connects SDRAM by data wire.Concrete connected mode is: the AVS decoder module is connected to PCI_AD24 to the PCI_AD31 mouth line of pci bus and XIO8 to the XIO15 data wire of XIO interface, forms 16 data wire jointly.The AVS decoder module also is connected to PCI_AD18 to the PCI_AD23 mouth line of pci bus and forms 6 address wire.In addition, the AVS decoder module also is connected to PCI_CBE1#, PCI_CBE2# and the XIO_SEL1 mouth line of pci bus, forms to write respectively to enable, read to enable, and chip selection signal.
Accordingly, main control unit generates the required signal of visit AVS decoder to PCI_AD24 to the PCI_AD31 mouth line of pci bus and XIO8 to the XIO15 data wire of XIO interface, and control AVS decoder.The mode of main control unit control AVS decoder mainly is that the needs decoded video stream is passed to the AVS decoder decode, and decoded data read is returned, and exports decoded video streams by the audio frequency and video output module then.
See also Fig. 3, be the flow chart of method for decoding video stream of the present invention.Method for decoding video stream of the present invention may further comprise the steps:
Step 100: intercept network packet.
Step 200: judge whether video flowing,,, then change step 600 over to if not the AVS video flowing if the AVS video flowing then forwards step 300 to into AVS.In the present embodiment, can judge whether video flowing according to the sign of " Streaming Media type " field of the packet in the video flowing into AVS.
Step 300: send AVS video flowing to AVS decoder module and decode.In the present embodiment, the AVS video flowing is to be sent to the AVS decoder module by pci interface and XIO interface.
Step 400: main control unit reads decoded data from the AVS decoder module.In the present embodiment, main control unit is to read decoded data by pci interface and XIO interface from the AVS decoder module.
Step 500: export decoded video streams by the audio frequency and video output module.
Step 600: main control unit is directly decoded to video flowing.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. set-top box, comprise main control unit, it is characterized in that, also comprise the AVS decoder module, the dynamic random memory module, flash memory module, the audio frequency and video input processing module, audio frequency and video output processing module and remote controller module, described AVS decoder module, the dynamic random memory module, flash memory module, the audio frequency and video input processing module, the audio frequency and video output processing module all directly links to each other with main control unit with remote controller module, audio-video signal is input to the audio frequency and video input processing module, through outputing to the audio frequency and video output processing module after the described main control unit processing, wherein, described main control unit is not to being that the video flowing of AVS is directly decoded the back by the output of audio frequency and video output processing module, and the AVS video flowing is passed to the AVS decoder module decode, again decoded data read is returned, export decoded video stream by the audio frequency and video output processing module then.
2. set-top box as claimed in claim 1 is characterized in that, described AVS decoder module connects main control unit by pci interface and XIO interface.
3. set-top box as claimed in claim 1 or 2 is characterized in that, described AVS decoder module comprises AVS decoder, metadata cache, address caching and CTR buffer memory, and described AVS decoder links to each other with metadata cache, address caching, CTR buffer memory respectively.
4. set-top box as claimed in claim 3 is characterized in that, described AVS decoder also links to each other with SDRAM.
5. set-top box as claimed in claim 1 is characterized in that, described flash memory module is the flash memory module of 64M 8bit.
6. set-top box as claimed in claim 1 is characterized in that, described dynamic random memory module is a 128M SDRAM chip.
7. method for decoding video stream comprises:
Steps A: main control unit is intercepted network packet, sign according to the Streaming Media type field of the packet in the video flowing judges whether the video flowing into AVS, and the AVS video flowing is sent to the AVS decoder module decode, if the packet that listens to is not the AVS video flowing, then main control unit is directly decoded to video flowing;
Step B: main control unit reads decoded data by pci interface and XIO interface from the AVS decoder module;
Step C: main control unit is exported decoded video streams by the audio frequency and video output module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200710125200XA CN101466030B (en) | 2007-12-21 | 2007-12-21 | Set-top box and method for decoding video stream |
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| CN200710125200XA CN101466030B (en) | 2007-12-21 | 2007-12-21 | Set-top box and method for decoding video stream |
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| CN101466030B true CN101466030B (en) | 2011-03-30 |
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| CN104506913B (en) * | 2014-12-09 | 2018-08-03 | 中国航空工业集团公司第六三一研究所 | A kind of audio/video decoding chip controls device based on software architecture |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1710940A (en) * | 2005-06-29 | 2005-12-21 | 上海广电（集团）有限公司中央研究院 | Satellite digital TV receiving apparatus and receiving method |
| CN1976391A (en) * | 2006-12-19 | 2007-06-06 | 上海广电（集团）有限公司中央研究院 | Advanced audio frequency standard network TV set set-top box based on digital signal processing |
| CN101086881A (en) * | 2006-06-07 | 2007-12-12 | 武汉博圣信息科技有限公司 | AVS audio coding and decoding system |
| CN101188708A (en) * | 2007-12-14 | 2008-05-28 | 四川长虹电器股份有限公司 | A ground digital TV receiving |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1710940A (en) * | 2005-06-29 | 2005-12-21 | 上海广电（集团）有限公司中央研究院 | Satellite digital TV receiving apparatus and receiving method |
| CN101086881A (en) * | 2006-06-07 | 2007-12-12 | 武汉博圣信息科技有限公司 | AVS audio coding and decoding system |
| CN1976391A (en) * | 2006-12-19 | 2007-06-06 | 上海广电（集团）有限公司中央研究院 | Advanced audio frequency standard network TV set set-top box based on digital signal processing |
| CN101188708A (en) * | 2007-12-14 | 2008-05-28 | 四川长虹电器股份有限公司 | A ground digital TV receiving |
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