CN105635620A - Device and method in support of audio transparent transmission SDI output - Google Patents
Device and method in support of audio transparent transmission SDI output Download PDFInfo
- Publication number
- CN105635620A CN105635620A CN201610029490.7A CN201610029490A CN105635620A CN 105635620 A CN105635620 A CN 105635620A CN 201610029490 A CN201610029490 A CN 201610029490A CN 105635620 A CN105635620 A CN 105635620A
- Authority
- CN
- China
- Prior art keywords
- audio
- video
- module
- sdi
- code stream
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
Abstract
The invention relates to the technical field of radio and television application, especially relates to a device and method in support of audio transparent transmission SDI output. The device comprises a system control module, a video and audio code stream input module, a video decoding module, an audio processing module, an SDI processing module and a power supply module. The system control module is respectively connected with the video and audio code stream input module, the video decoding module, the audio processing module, the SDI processing module and the power supply module. According to the device and the method provided by the invention, video ES code streams in the TS code streams are independently decoded; audio ES (Element Stream) streams are repackaged in an AES3 format and then are directly transparently transmitted; decoded base band digital video signals and transparently transmitted AES3 audio signals are synthesized according to SDI standards and then are output; the complexity and the cost of the coding and decoding devices can be reduced; and the original tone quality of the audio can be maintained to the maximum extent.
Description
Technical field
The present invention relates to radio and television applied technical field, support the audio frequency transparent transmission SDI apparatus and method exported particularly to a kind of.
Background technology
Along with quickly popularizing of digital TV in high resolution, particularly the wideling popularize of domestic AVS+ encoding and decoding standard, television station adopts AVS+ coding techniques to carry out the coding transmission of program one after another, operator's cable network considers that existing subscriber computer top box does not mostly support that AVS+ decodes, it is H.264 or MPEG2 coded format therefore, numerous and confused that to adopt transcoding technology be by AVS+ coded format transcoding.
Transcoding technology mainly has two kinds, and one is first with AVS+ decoder, AVS+ compressed signal to be decoded into base-band digital video/audio signal, then uses H.264 or mpeg 2 encoder coding output; H.264 or MPEG2 another kind is with AVS+ receiver output AVS+ clear stream signal, is then by transcoder by AVS+ transcoding, and two kinds of transcoding technologies are respectively arranged with pluses and minuses.
For audio signal, present high-definition television program mostly adopts DD (DolbyDigital) or DD+ (DolbyDigitalPlus) compressed audio coding form, if adopting DD or DD+ coding, needs to pay high license expense by encoded audio channels number to Dolby company. Therefore, when transcoding, if able to provide a kind of apparatus and method that TV programme original audio signal transparent transmission can be exported, then can save license expense, it is also possible to reducing coding/decoding apparatus complexity, reducing the original tonequality being maintained with audio frequency of cost.
Summary of the invention
Present invention aims to the defect of prior art and deficiency, a kind of simple in construction is provided, reasonable in design, easy to use a kind of support the audio frequency transparent transmission SDI apparatus and method exported, it increases support audio frequency transparent transmission SDI output function on existing video-audio decoder, by the video ES code stream in TS code stream is independently decoded, audio ES code stream is direct transparent transmission after being re-packaged into AES3 form, then output after the baseband digital video signal of decoding and the AES3 audio signal of transparent transmission being processed according to SDI specification synthesis, complexity and the cost of coding/decoding apparatus so both can be reduced, and keep the original tonequality of audio frequency to greatest extent.
For achieving the above object, the technical solution used in the present invention is:
Of the present invention a kind of supporting the audio frequency transparent transmission SDI apparatus and method exported, it includes system control module, video/audio code stream input module, Video decoding module, audio processing modules, SDI processing module and power module; Described system control module respectively with video/audio code stream input module, Video decoding module, audio processing modules, SDI processing module and power module.
It adopts following method step:
S1: adopt video/audio code stream input module, converts the video and audio serial bit stream signal that ASI form or TS/IP form input to SPI form parallel stream signal, it is simple to rear class processes;
S2: adopt Video decoding module, takes out video ES code stream from the video and audio parallel stream signal of input, delivers to video decoding chip, decoding output baseband digital video signal;
S3: adopt audio processing modules, takes out audio ES code stream from the video and audio parallel stream signal of input, then takes out compression voice data from audio code stream, and is encapsulated as AES3 audio format;
S4: adopt SDI processing module, baseband digital video signal and AES3 audio signal are packaged according to SDI specification, then carry out again serializing, driving output.
After adopting said structure, present invention have the beneficial effect that and of the present invention a kind of support the audio frequency transparent transmission SDI apparatus and method exported, it increases support audio frequency transparent transmission SDI output function on existing video-audio decoder, by the video ES code stream in TS code stream is independently decoded, audio ES code stream is direct transparent transmission after being re-packaged into AES3 form, then output after the baseband digital video signal of decoding and the AES3 audio signal of transparent transmission being processed according to SDI specification synthesis, complexity and the cost of coding/decoding apparatus so both can be reduced, and keep the original tonequality of audio frequency to greatest extent.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the FB(flow block) of the present invention.
Description of reference numerals:
1, system control module; 2, video/audio code stream input module; 3, Video decoding module; 4, audio processing modules; 5, SDI processing module; 6, power module.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further illustrated.
A kind of supporting the audio frequency transparent transmission SDI apparatus and method exported as it is shown in figure 1, of the present invention, it includes system control module 1, video/audio code stream input module 2, Video decoding module 3, audio processing modules 4, SDI processing module 5 and power module 6; Described system control module 1 respectively with video/audio code stream input module 2, Video decoding module 3, audio processing modules 4, SDI processing module 5 and power module 6.
Described video/audio code stream input module 2 converts the video and audio serial bit stream signal that ASI (AsynchronousSerialInterface) form or TS/IP form input to SPI (SynchronousParallelInterface) form parallel stream signal, for device inside.
Described Video decoding module 3 takes out video ES (ElementStream) code stream from the video and audio parallel stream signal of input, delivers to video decoding chip, decoding output baseband digital video signal.
Described audio processing modules 4 takes out audio ES code stream from the video and audio parallel stream signal of input, then takes out compression voice data from audio code stream, and is encapsulated as AES3 audio format.
First baseband digital video signal and AES3 audio signal are packaged by described SDI processing module 5 according to SDI specification, then carry out serializing, driving output again.
Described system control module 1 provides control signal to video/audio code stream input module 2, Video decoding module 3, audio processing modules 4, SDI processing module 5, so that the work that each module coordination is consistent. Described power module 6 provides power supply supply for this device.
As in figure 2 it is shown, it adopts following method step:
S1: adopt video/audio code stream input module, converts the video and audio serial bit stream signal that ASI form or TS/IP form input to SPI form parallel stream signal, it is simple to rear class processes;
S2: adopt Video decoding module, takes out video ES code stream from the video and audio parallel stream signal of input, delivers to video decoding chip, decoding output baseband digital video signal;
S3: adopt audio processing modules, takes out audio ES code stream from the video and audio parallel stream signal of input, then takes out compression voice data from audio code stream, and is encapsulated as AES3 audio format;
S4: adopt SDI processing module, baseband digital video signal and AES3 audio signal are packaged according to SDI specification, then carry out again serializing, driving output.
Sending control signal by system control module 1 in the present invention commands video/audio code stream input module 2, Video decoding module 3, audio processing modules 4, SDI processing module 5 to process data; Power module 6 then provides stable power supply supply.
The present invention increases support audio frequency transparent transmission SDI output function on existing video-audio decoder, by the video ES code stream in TS code stream is independently decoded, audio ES code stream is direct transparent transmission after being re-packaged into AES3 form, then output after the baseband digital video signal of decoding and the AES3 audio signal of transparent transmission being processed according to SDI specification synthesis, so both can reduce complexity and the cost of coding/decoding apparatus, and keep the original tonequality of audio frequency to greatest extent.
The above is only the better embodiment of the present invention, therefore all equivalences done according to the structure described in present patent application scope, feature and principle change or modify, and are all included within the scope of present patent application.
Claims (1)
1. support the audio frequency transparent transmission SDI apparatus and method exported for one kind, it is characterised in that: it includes system control module, video/audio code stream input module, Video decoding module, audio processing modules, SDI processing module and power module; Described system control module respectively with video/audio code stream input module, Video decoding module, audio processing modules, SDI processing module and power module;
It adopts following method step:
S1: adopt video/audio code stream input module, converts the video and audio serial bit stream signal that ASI form or TS/IP form input to SPI form parallel stream signal, it is simple to rear class processes;
S2: adopt Video decoding module, takes out video ES code stream from the video and audio parallel stream signal of input, delivers to video decoding chip, decoding output baseband digital video signal;
S3: adopt audio processing modules, takes out audio ES code stream from the video and audio parallel stream signal of input, then takes out compression voice data from audio code stream, and is encapsulated as AES3 audio format;
S4: adopt SDI processing module, baseband digital video signal and AES3 audio signal are packaged according to SDI specification, then carry out again serializing, driving output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610029490.7A CN105635620A (en) | 2016-01-18 | 2016-01-18 | Device and method in support of audio transparent transmission SDI output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610029490.7A CN105635620A (en) | 2016-01-18 | 2016-01-18 | Device and method in support of audio transparent transmission SDI output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105635620A true CN105635620A (en) | 2016-06-01 |
Family
ID=56050064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610029490.7A Pending CN105635620A (en) | 2016-01-18 | 2016-01-18 | Device and method in support of audio transparent transmission SDI output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105635620A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107155115A (en) * | 2017-06-09 | 2017-09-12 | 浙江广播电视集团 | Video/audio processing system and method |
| CN107369457A (en) * | 2017-09-04 | 2017-11-21 | 成都德芯数字科技股份有限公司 | The voice data transmitting methods of AC 3 and device |
| CN108322777A (en) * | 2018-01-10 | 2018-07-24 | 成都驰通数码系统有限公司 | A kind of system and processing method for supporting AC-3, AAC, DRA audio transparent transmission |
| CN110087086A (en) * | 2019-05-07 | 2019-08-02 | 北京流金岁月文化传播股份有限公司 | A kind of device and method for supporting 4K SDI to export |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201878285U (en) * | 2010-11-24 | 2011-06-22 | 北京格非科技发展有限公司 | High standard definition video server |
| CN102119420A (en) * | 2008-04-16 | 2011-07-06 | 松下电器产业株式会社 | Recording medium, recording device, recording method, and reproduction device |
| EP2521367A1 (en) * | 2009-02-19 | 2012-11-07 | Panasonic Corporation | Recording medium, playback device, and integrated circuit |
| CN204291273U (en) * | 2014-12-31 | 2015-04-22 | 北京流金岁月文化传播有限公司 | A kind of Polymera deciphering high definition satellite decoder supporting AVS+ to decode |
-
2016
- 2016-01-18 CN CN201610029490.7A patent/CN105635620A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102119420A (en) * | 2008-04-16 | 2011-07-06 | 松下电器产业株式会社 | Recording medium, recording device, recording method, and reproduction device |
| EP2521367A1 (en) * | 2009-02-19 | 2012-11-07 | Panasonic Corporation | Recording medium, playback device, and integrated circuit |
| CN201878285U (en) * | 2010-11-24 | 2011-06-22 | 北京格非科技发展有限公司 | High standard definition video server |
| CN204291273U (en) * | 2014-12-31 | 2015-04-22 | 北京流金岁月文化传播有限公司 | A kind of Polymera deciphering high definition satellite decoder supporting AVS+ to decode |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107155115A (en) * | 2017-06-09 | 2017-09-12 | 浙江广播电视集团 | Video/audio processing system and method |
| CN107369457A (en) * | 2017-09-04 | 2017-11-21 | 成都德芯数字科技股份有限公司 | The voice data transmitting methods of AC 3 and device |
| CN108322777A (en) * | 2018-01-10 | 2018-07-24 | 成都驰通数码系统有限公司 | A kind of system and processing method for supporting AC-3, AAC, DRA audio transparent transmission |
| CN110087086A (en) * | 2019-05-07 | 2019-08-02 | 北京流金岁月文化传播股份有限公司 | A kind of device and method for supporting 4K SDI to export |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8330866B2 (en) | Multi-program viewing in a wireless apparatus | |
| CN105635620A (en) | Device and method in support of audio transparent transmission SDI output | |
| CN110661752A (en) | Plug-in-free real-time video playing system and method | |
| CN105611317A (en) | Video-audio transcoding device and method capable of supporting audio unvarnished transmission | |
| CN102724551A (en) | Video encoding system and video encoding method | |
| CN104661044A (en) | Broadcasting and TV OTT (over the top) integration terminal and implementing method thereof | |
| CN103024519A (en) | Set-top box for supporting multiple devices to receive different programs and implementation method thereof | |
| US20180249204A1 (en) | Apparatus for transmitting tv signals using wifi | |
| CN103731672A (en) | Audio and video decoding method and smart television | |
| CN102811382A (en) | Method and device for collecting multimedia signals | |
| WO2016035731A1 (en) | Transmitting device, transmitting method, receiving device and receiving method | |
| KR101659992B1 (en) | Video signal transmission method, device, system and terminal | |
| CN201039303Y (en) | Wireless digital STB | |
| CN202334699U (en) | Multi-channel high standard definition video server system | |
| CN103747249A (en) | Audio and video decoding method and android mobile terminal | |
| CN104869474A (en) | Expansible mobile streaming media system and application method thereof | |
| CN207802170U (en) | A kind of multi-path HDMI interfaces codec terminal system | |
| CN107493505B (en) | Device and method for video and audio transcoding supporting dual audio output | |
| CN204334853U (en) | A kind of controller rotary-push type Set Top Box | |
| CN107566894A (en) | A kind of apparatus and method for the video and audio transcoding for supporting double transcodings to export | |
| CN102263941A (en) | Transcoding method and device for video file | |
| CN212211119U (en) | HDR-supporting H.2654K ultra-high-definition double-path encoder | |
| CN212969918U (en) | AVS2 to H.2654K coding and transcoding all-in-one machine | |
| CN212211232U (en) | AVS 2-H.264 high-definition transcoder | |
| CN104539997B (en) | A kind of DVB systems based on android |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160601 |
|
| RJ01 | Rejection of invention patent application after publication |