CN201813499U - Digital set top box with multimedia movie playing function - Google Patents
Digital set top box with multimedia movie playing function Download PDFInfo
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- CN201813499U CN201813499U CN 201020575928 CN201020575928U CN201813499U CN 201813499 U CN201813499 U CN 201813499U CN 201020575928 CN201020575928 CN 201020575928 CN 201020575928 U CN201020575928 U CN 201020575928U CN 201813499 U CN201813499 U CN 201813499U
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- top box
- set top
- digital set
- decoding
- playing
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Abstract
The utility model provides a digital set top box with a multimedia movie playing function, which comprises a digital set top box body and is characterized in that the interior of the digital set top box is internally provided with a central processor, and the central processor is respectively connected with an audio/video decoding module and a USB (Universal Serial Bus) interface module and is connected with mobile storage equipment through the USB interface module. In the utility model, the function of playing multimedia movie files on a common household digital set top box is realized, a soft decoding mode is improved, multiple processes and multiple buffer zones are adopted, decoding and playing can be carried out simultaneously through the scheduling of an embedded operation system, and the multimedia movie files can be randomly operated in a fast forward or a fast backward way, therefore, a smoother playing effect can be achieved under the condition that occupied internal memory and other resources are reduced.
Description
[technical field]
The utility model relates to the top box of digital machine technical field, particularly a kind of top box of digital machine with the multi media show playing function.
[background technology]
Along with the development of Digital Television, the popularization of top box of digital machine is with universal, and every household is realized digital to television substantially.And along with the update of set-top box, realized the functional module of band USB interface substantially, on hardware, allowed to carry out multi-functional expansion.But, present existing digital TV set-top box can only be finished the function of watching program substantially, but development and development of technology along with society, the mankind only do not see TV on TV being satisfied with, and see a film in computer, because the limitation of computer screen, influence visual effect, therefore require a kind of energy by the broadcast of set-top box USB interface realization, integrate DVD player, realize multimedization multimedia file.
[utility model content]
The technical problems to be solved in the utility model is to provide a kind of top box of digital machine with the multi media show playing function, realizes seeing a film on the TV, realize that DVD in one, has independently player, functional diversities, simple in structure, the novel set-top box of easy operating.
The utility model is a kind of top box of digital machine with the multi media show playing function, comprise the top box of digital machine body, it is characterized in that: be provided with central processing unit in the described top box of digital machine body, described central processing unit is connected with audio/video decoding module, usb interface module respectively, and described central processing unit is connected with movable storage device by usb interface module.
Usefulness of the present utility model is: the function that has realized play multimedia movie file on the average family top box of digital machine, and improved soft decoding schema, sampling multi-process and multiple buffer, scheduling by embedded OS makes the decoding broadcast carry out simultaneously, can carry out fast arbitrarily advance and retreat operation to the multi media show file, make that result of broadcast is smooth more under the situation of a resource shrinkages such as committed memory.
[description of drawings]
Fig. 1 is the utility model structural representation.
Fig. 2 is a multi media show decoding playing flow schematic diagram of the present utility model.
[embodiment]
Below in conjunction with drawings and Examples the utility model is described further.
As shown in Figure 1, the top box of digital machine of band multi media show playing function, comprise the top box of digital machine body, be provided with central processing unit in the described top box of digital machine body, described central processing unit is connected with audio/video decoding module, usb interface module respectively, and described central processing unit is connected with movable storage device by usb interface module.
This top box of digital machine should have usb interface module, can discern each movable storage device automatically.Communicate to connect by usb interface module and top box of digital machine body, central processing unit reads the movie file of memory device and (supports AVI, MP4 or the like formatted file), the audio/video decoding module is decoded to its file, in decoding, movie file is play, pass through AV again, HDMI exports, and finishes the function of movie.
Its instrument principle as shown in Figure 2, concrete steps are as follows:
Top box of digital machine is set up with movable storage device by usb interface module and is communicated by letter, and the set-top box central processing unit reads the multi media show file, and it is given in homemade friendly player list.Set-top box receives the message of user's control module, can play F.F., operations such as rewind down to the multi media show file.When the user selects corresponding multi media show file to play, cooperate the audio/video decoding module of set-top box, set up two process, two buffer memorys are decoded to the multi media show file and are play.In the decode procedure, according to the analysis of decoding of the international standard of H264, audio decoder is the PCM data with multi media show file video, and the data of decoding are put in the round-robin queue broadcast of stand by tone video.When the multi media show file begins to play, read head pointer in the buffer area, the data of decoding are put in tail pointer, up to play to finish promptly end to end pointer overlapping till.By the thread scheduling of OS, the two-wire journey is communicated by information, guarantee the synchronism of two-wire journey, the decoding of enhanced system and ability to play guarantee real-time decoding and broadcast, improve the effect of tonequality and picture.
What deserves to be mentioned is: the audio/video decoding module is carried out the decoding of audio frequency and video to multimedia file, mainly adopts the H264 standard to decode.H264 comprises video coding layer (VCL) and network abstraction layer (NAL), and VCL comprises other definition of syntactic level of core compression engine and piece, red and sheet, and the target that it relates to is to carry out encoding and decoding efficiently under the situation that is independent of network as much as possible.The NAL decoder is responsible for meeting the compressing video frequency flow decoding of H264 code stream standard, and carries out image reconstruction.Decoder is accepted the bit stream of compression from NAL, obtain a series of quantization parameter X through code stream being carried out the entropy decoding; These coefficients obtain residual error data D through inverse transformation and inverse quantization; Decoder uses the header that decoding obtains from code stream to create a prediction piece FRED, and FRED and residual error data D summation obtain image block data UF; Last each UF obtains the decoding block F of reconstructed image by deblocking filtering.By the powerful audio/video decoding of set-top box master chip, realize the tonequality and the picture of better quality, satisfy the effect of home theater.
In a word, the utility model has been realized the function of play multimedia movie file on the average family top box of digital machine, and improved soft decoding schema, sampling multi-process and multiple buffer, scheduling by embedded OS makes the decoding broadcast carry out simultaneously, can carry out fast arbitrarily advance and retreat operation to the multi media show file, make that result of broadcast is smooth more under the situation of a resource shrinkages such as committed memory.
The above only is preferred embodiment of the present utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (1)
1. top box of digital machine with the multi media show playing function, comprise the top box of digital machine body, it is characterized in that: be provided with central processing unit in the described top box of digital machine body, described central processing unit is connected with audio/video decoding module, usb interface module respectively, and described central processing unit is connected with movable storage device by usb interface module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020575928 CN201813499U (en) | 2010-10-26 | 2010-10-26 | Digital set top box with multimedia movie playing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020575928 CN201813499U (en) | 2010-10-26 | 2010-10-26 | Digital set top box with multimedia movie playing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201813499U true CN201813499U (en) | 2011-04-27 |
Family
ID=43896434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020575928 Expired - Fee Related CN201813499U (en) | 2010-10-26 | 2010-10-26 | Digital set top box with multimedia movie playing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201813499U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102984587A (en) * | 2011-09-05 | 2013-03-20 | 深圳市快播科技有限公司 | An optimization method, an optimization device and an on-demand terminal for video playing |
| CN103905783A (en) * | 2012-12-25 | 2014-07-02 | 杭州海康威视数字技术股份有限公司 | Method and device for performing decoding and displaying on video stream |
-
2010
- 2010-10-26 CN CN 201020575928 patent/CN201813499U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102984587A (en) * | 2011-09-05 | 2013-03-20 | 深圳市快播科技有限公司 | An optimization method, an optimization device and an on-demand terminal for video playing |
| CN102984587B (en) * | 2011-09-05 | 2016-05-25 | 深圳市快播科技有限公司 | A kind of optimization method, device and terminal of video playback |
| CN103905783A (en) * | 2012-12-25 | 2014-07-02 | 杭州海康威视数字技术股份有限公司 | Method and device for performing decoding and displaying on video stream |
| CN103905783B (en) * | 2012-12-25 | 2017-09-01 | 杭州海康威视数字技术股份有限公司 | The method and apparatus of decoding display is carried out to video flowing |
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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: 20110427 Termination date: 20141026 |
|
| EXPY | Termination of patent right or utility model |