CN100440980C - A multiplexer, digital TV network system and its method for regulation of sound volume - Google Patents
A multiplexer, digital TV network system and its method for regulation of sound volume Download PDFInfo
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- CN100440980C CN100440980C CNB200610157092XA CN200610157092A CN100440980C CN 100440980 C CN100440980 C CN 100440980C CN B200610157092X A CNB200610157092X A CN B200610157092XA CN 200610157092 A CN200610157092 A CN 200610157092A CN 100440980 C CN100440980 C CN 100440980C
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Abstract
The provided multiplexer comprises: a transmission de-multiplex unit to de-multiplex data flow of digital TV and electric menus for guide information, at least one menu adjust module to adjust menu sound volume, and a transmission multiplex unit to multiplex and output adjusted menus.
Description
Technical field
The present invention relates to the digital television techniques field, relate in particular to a kind of multiplexer, digital TV network system and method for regulation of sound volume thereof.
Background technology
See also Fig. 1, be the schematic diagram of digital TV network system in the prior art.This digital TV network system 80 comprises: multiplexer 81, digital television program source 82, electronic program guides (EPG, ElectronicProgram Guide) system 83, transmission network 84, digital TV terminal set-top box (STB, Set Top Box) 85 and Digital Television 86.Digital television program is through gathering, handle coding formation digital television program source, back 82, and with the form of transport stream (TS, Transport Stream), as the TS of MPEG-2 or MPEG-4, transfers to multiplexer 81.EPG system 83 also transfers to multiplexer 81 with EPG information with the form of TS.Multiplexer 81 spreads out of multichannel TS after multiplexing.Pass through transmission network 84 again, finally deliver to set-top box 85.This STB85 carries out demultiplexing to TS, obtains digital television program and EPG information, and represents to spectators by Digital Television 86.
But because digital television program source 82 differences, the default volume of program has nothing in common with each other, thereby when may cause STB85 to switch between different programs, it is very big, perhaps very little suddenly sound to occur, and then makes troubles to the user.
Solution of the prior art is: by the EPG system 83 of digital TV front-end, carry a privately owned descriptor information in the EPG information that issues.In this descriptor information, weights of each program volume are described.These weights generally are at front end, manually are provided with by each program of listening testing.The original value of volume can be represented with the level amplitude of average volume.As shown in the table:
| Program | Original sound volume | Weights | Volume after the weighting |
| CCTV-1 | 100 | 1 | 100 |
| CCTV-news | 150 | 0.67 | 100 |
| HNTV | 60 | 1.67 | 100 |
| Guangdong satellite TV | 120 | 0.83 | 100 |
STB85 resolves this descriptor information of acquisition after receiving EPG information.When switching program, the default volume of each program can be represented with these weights.Hypothesis weights is 1, and then the yield value of the default volume of corresponding program is 1; If weights are 0.67, then the default volume gain value of corresponding program is 0.67, and other by that analogy.Thereby prevent STB85 in the process that program switches, it is very big or very little suddenly volume to occur.
Yet, may there be the STB85 of a plurality of manufacturers in a digital tv network, the above-mentioned weights that are used for the volume adjustment are to send by privately owned descriptor information, promptly adopt proprietary protocol, the STB85 of the manufacturer that has can't resolve this descriptor because of not supporting this proprietary protocol, thereby can't realize the volume adjustment.And, when the volume of certain program changes, then need each STB85 is upgraded descriptor information, thereby make this volume adjustment complicated.
Summary of the invention
Method for regulation of sound volume provides a kind of multiplexer that can realize that volume is adjusted than complicated problems in the prior art in order to solve.
A kind of better simply method for regulation of sound volume also is provided.
Also provide a kind of method for regulation of sound volume better simply digital TV network system.
A kind of multiplexer, it comprises transmission demultiplexing unit, at least one program adjusting module and transmission Multiplexing Unit; This transmission demultiplexing unit is used for the transport stream of digital television program and electronic program guides is carried out demultiplexing, obtains digital television program and electronic program guide information; This program adjusting module is used for according to electronic program guide information digital television program being carried out the volume adjustment; This transmission Multiplexing Unit is used for adjusted digital television program and electronic program guide information multiplexing back output.
A kind of method for regulation of sound volume comprises the steps: the transport stream of digital television program and the transport stream of electronic program guide information are transmitted demultiplexing, obtains digital television program and electronic program guide information; According to electronic program guide information the volume of digital television program is adjusted; Transmit adjusted digital television program and electronic program guide information multiplexing.
A kind of digital TV network system, it comprises: digital television program source, electronic program guidance system and multiplexer, this digital television program source is used to provide the digital television program transport stream, this electronic program guidance system is used to provide the electronic program guide information transport stream, this multiplexer is used for the transport stream that digital tv programme source and electronic program guidance system provide is carried out multiplexing, and this multiplexer comprises transmission demultiplexing unit, at least one program adjusting module and transmission Multiplexing Unit.
Above-mentioned multiplexer carries out demultiplexing by the transmission demultiplexing unit to digital television program transport stream and electronic program guide information transport stream, obtains digital television program and electronic program guide information; According to this electronic program guide information this digital television program is carried out the volume adjustment by the program adjusting module again, and then make this multiplexer can realize the adjustment of volume.
Because a multiplexer can transmit digital television signal for numerous STB, said method is adjusted the volume of program in the multiplexing process of digital television signal, then STB need not to support the adjustment of volume, can satisfy the needs of different manufacturers or different model STB, and then make that this method for regulation of sound volume is simpler, realize being easier to.And, in a digital TV network system, the number of multiplexer is less than the number of STB far away, therefore, source at digital television signal, carry out the volume adjustment in the time of just multiplexing, more than being easy at digital television signal terminal STB, and then make that the method for regulation of sound volume of this digital TV network system is simpler.
Description of drawings
Fig. 1 is the schematic diagram of digital TV network system in the prior art.
Fig. 2 is the schematic diagram of digital TV network system first execution mode of the present invention.
Fig. 3 is the schematic diagram of program adjusting module shown in Figure 2.
Fig. 4 is the schematic diagram of digital TV network system second execution mode of the present invention.
Embodiment
See also Fig. 2, be the schematic diagram of digital TV network system first execution mode of the present invention.This digital TV network system 10 comprises: multiplexer 1, digital television program source 2, EPG system 3, transmission network 4, STB5 and Digital Television 6.Wherein, this multiplexer 1 comprises: transmission demultiplexing unit 12, program adjusting module 16 and transmission Multiplexing Unit 18.These digital TV network system 10 operation are as follows:
The EPG transmission of Information stream TSn that the transport stream TS of the digital television program that this digital television program source 2 provides and EPG system 3 generate transfers to this multiplexer 1.12 couples of TS of the transmission demultiplexing unit of this multiplexer 1 and TSn demultiplexing obtain program and EPG information.This program reaches program adjusting module 16, and this EPG information reaches this program adjusting module 16 and transmission Multiplexing Unit 18, and this program adjusting module 16 is adjusted the volume of program according to this EPG information, obtains adjusted program.At last, transmission Multiplexing Unit 18 is TS ' with adjusted program and EPG information multiplexing.This TS ' finally delivers to STB5 through transmission network 4.STB5 carries out demultiplexing to TS ', obtains digital television program and EPG information, and represents to spectators by Digital Television 86.
See also Fig. 3, be the schematic diagram of program adjusting module shown in Figure 2.This program adjusting module 16 comprises program demultiplexing unit 161, decoding unit 162, adjustment unit 163, coding unit 164, video processing unit 165 and program multiplexing unit 166.The operation principle of this program adjusting module 16 is as follows:
The program of transmission demultiplexing unit 12 outputs is through program demultiplexing unit 161 program demultiplexings, obtain audio transmission bag (Audio Transport Stream Packet, A_TSP), video transport packet (VideoTransport Stream Packet, V_TSP) and program clock reference (Program ClockReference, PCR).This A_TSP is again through decoding unit 162 decoding, obtain audio stream and reproduction time mark (Presentation Time Stamp, PTS); Adjustment unit 163 is resolved the EPG information acquisition and is described volume descriptor information, adjusts the expression audio volume coding factor in the audio stream according to descriptor information again, to realize the volume adjustment.Then, coding unit 164 obtains A_TSP ' with reference to PTS with adjusted audio stream coding.This V_TSP obtains V_TSP ' through video processing unit 165 as delay process, makes V_TSP ' and A_TSP ' synchronous.This A_TSP ', V_TSP ' and PCR all reach the adjusted program of program multiplexing unit 166 multiplexing outputs.
Above-mentioned multiplexer 1 carries out demultiplexing by transmission 12 pairs of digital television program transport stream of demultiplexing unit and EPG message transmission stream, obtains digital television program and EPG information; According to this EPG information this digital television program is carried out the volume adjustment by program adjusting module 16 again, and then make this multiplexer 1 can realize the adjustment of volume.Because a multiplexer 1 can transmit digital television signal for numerous STB5, in the multiplexing process of digital television signal, adjust the volume of program, then STB5 need not to support the adjustment of volume, can satisfy the needs of different manufacturers or different model STB5, and then make that the volume adjustment is simpler, realize being easier to.And, in a digital TV network system 10, the number of multiplexer 1 is less than the number of STB5 far away, therefore, source at digital television signal, carry out the volume adjustment in the time of just multiplexing, easy more than STB5 in the digital television signal terminal, and then make that the method for regulation of sound volume of this digital TV network system 10 is simpler.
See also Fig. 4, be the schematic diagram of digital TV network system second execution mode of the present invention.This execution mode and the first execution mode difference are:
This digital TV network system 20 comprises: multiplexer 21, digital television program source 22 and 24 and EPG system 23, comprise program 1 and program 2 in the transport stream TS 1 in this digital television program source 22, and comprise program 3 in the transport stream TS 2 in this digital television program source 24; This digital television program source 22 and 24 shared these EPG systems 23.Wherein, this multiplexer 21 comprises: transmission demultiplexing unit 212, program adjusting module 215,216 and 217, and transmission Multiplexing Unit 218.Digital television program source 22 and 24 transport stream TS 1 and TS2 obtain program 1, program 2 and program 3 through demultiplexing; The transport stream TS n that EPG system 23 provides obtains EPG information through these transmission demultiplexing unit 212 demultiplexings, and this EPG information transfers to program adjusting module 215,216 and 217 respectively by distribution, and transmission Multiplexing Unit 218.This program adjusting module 215,216 and 217 is adjusted the volume of program 1, program 2 and program 3 according to EPG information, and generates program 1 ', program 2 ' and program 3 '.218 pairs of adjusted programs 1 ' of this transmission Multiplexing Unit, program 2 ', program 3 ' and EPG information are transmitted multiplexing, generate transport stream TS '.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1. a multiplexer is characterized in that: comprise transmission demultiplexing unit, at least one program adjusting module and transmission Multiplexing Unit;
Described transmission demultiplexing unit is used for that the transport stream of digital television program and electronic program guides is carried out demultiplexing and obtains digital television program and electronic program guide information;
Described program adjusting module is used for according to electronic program guide information digital television program being carried out the volume adjustment;
Described transmission Multiplexing Unit is used for adjusted digital television program and electronic program guide information multiplexing back output.
2. multiplexer as claimed in claim 1 is characterized in that: described program adjusting module comprises program demultiplexing unit, decoding unit, adjustment unit, coding unit, video processing unit and program multiplexing unit;
Described program demultiplexing unit is used for program is carried out demultiplexing, obtains audio transmission bag and video transport packet;
Described decoding unit is used for audio transmission bag decoding acquisition audio stream; Described adjustment unit is used for according to electronic program guide information audio stream being adjusted;
Described coding unit is used for adjusted audio stream coding is generated adjusted audio transmission bag;
Described video processing unit is used for video transport packet is made delay process;
Described program multiplexing unit is used for the video transport packet after adjusted audio transmission bag and the delay multiplexing, generates adjusted program.
3. multiplexer as claimed in claim 2 is characterized in that: described decoding unit also is used for obtaining the reproduction time mark when decoding, and passes to coding unit; Described coding unit also is used for reference to the reproduction time mark audio stream being encoded.
4. digital TV network system, it comprises: digital television program source, electronic program guidance system and multiplexer, described digital television program source is used to provide the digital television program transport stream, described electronic program guidance system is used to provide the electronic program guide information transport stream, it is characterized in that described multiplexer is a claim 1-3 described multiplexer arbitrarily.
5. a method for regulation of sound volume comprises the steps:
The transport stream of digital television program and the transport stream of electronic program guide information are transmitted demultiplexing, obtain digital television program and electronic program guide information;
According to electronic program guide information the volume of digital television program is adjusted;
Transmit adjusted digital television program and electronic program guide information multiplexing.
6. method for regulation of sound volume as claimed in claim 5 is characterized in that: the described step that the volume of digital television program is adjusted comprises,
From digital television program, obtain audio stream;
Resolve electronic program guide information, obtain volume descriptor information;
According to volume descriptor information audio stream is carried out the volume adjustment.
7. method for regulation of sound volume as claimed in claim 6 is characterized in that: the described step that obtains audio stream from digital television program comprises by digital television program is carried out the program demultiplexing, obtains audio transmission bag and video transport packet; Again to the audio transmission bag acquisition audio stream of decoding.
8. method for regulation of sound volume as claimed in claim 6 is characterized in that: the described step that audio stream is carried out the volume adjustment comprises according to described descriptor information adjusts the expression audio volume coding factor in the audio stream, realizes the volume adjustment.
9. method for regulation of sound volume as claimed in claim 7 is characterized in that: the described step that the volume of digital television program is adjusted further comprises to be done to postpone to handle to video transport packet.
10. method for regulation of sound volume as claimed in claim 7 is characterized in that: the described step that obtains audio stream from digital television program further is included in the audio transmission bag decoded and obtains the reproduction time mark; It further comprises encodes to audio stream, and with reference to the reproduction time mark audio stream is encoded.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610157092XA CN100440980C (en) | 2006-11-24 | 2006-11-24 | A multiplexer, digital TV network system and its method for regulation of sound volume |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610157092XA CN100440980C (en) | 2006-11-24 | 2006-11-24 | A multiplexer, digital TV network system and its method for regulation of sound volume |
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| Publication Number | Publication Date |
|---|---|
| CN1964498A CN1964498A (en) | 2007-05-16 |
| CN100440980C true CN100440980C (en) | 2008-12-03 |
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| CNB200610157092XA Expired - Fee Related CN100440980C (en) | 2006-11-24 | 2006-11-24 | A multiplexer, digital TV network system and its method for regulation of sound volume |
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| CN106792370B (en) * | 2017-02-20 | 2021-01-29 | 广州视源电子科技股份有限公司 | Volume control method and device |
Citations (8)
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| WO1999053688A2 (en) * | 1998-04-08 | 1999-10-21 | Koninklijke Philips Electronics N.V. | A television receiver with an electronic program guide (epg) |
| JP2001346116A (en) * | 2000-05-31 | 2001-12-14 | Toshiba Corp | Information receiver |
| WO2001099416A2 (en) * | 2000-06-21 | 2001-12-27 | Bellsouth Intellectual Property Corporation | System and method for formulating, delivering and managing data concerning programming content and portions thereof |
| CN1411663A (en) * | 1999-10-18 | 2003-04-16 | 金钟海 | Addressable television broadcasting system |
| JP2004166294A (en) * | 2003-12-24 | 2004-06-10 | Victor Co Of Japan Ltd | Transmitting apparatus and receiving apparatus for electronic program guide |
| US20050034174A1 (en) * | 2003-08-08 | 2005-02-10 | Kabushiki Kaisha Toshiba | Digital receiving device and digital broadcasting receiving method |
| JP2005347893A (en) * | 2004-05-31 | 2005-12-15 | Toshiba Corp | Operation terminal and method for browsing web page of broadcast program thereof |
| US7140033B1 (en) * | 2000-06-21 | 2006-11-21 | Bellsouth Intellectual Property Corporation | Methods and systems for controlling consumer electronics external devices via data delivered to a device |
-
2006
- 2006-11-24 CN CNB200610157092XA patent/CN100440980C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999053688A2 (en) * | 1998-04-08 | 1999-10-21 | Koninklijke Philips Electronics N.V. | A television receiver with an electronic program guide (epg) |
| CN1411663A (en) * | 1999-10-18 | 2003-04-16 | 金钟海 | Addressable television broadcasting system |
| JP2001346116A (en) * | 2000-05-31 | 2001-12-14 | Toshiba Corp | Information receiver |
| WO2001099416A2 (en) * | 2000-06-21 | 2001-12-27 | Bellsouth Intellectual Property Corporation | System and method for formulating, delivering and managing data concerning programming content and portions thereof |
| US7140033B1 (en) * | 2000-06-21 | 2006-11-21 | Bellsouth Intellectual Property Corporation | Methods and systems for controlling consumer electronics external devices via data delivered to a device |
| US20050034174A1 (en) * | 2003-08-08 | 2005-02-10 | Kabushiki Kaisha Toshiba | Digital receiving device and digital broadcasting receiving method |
| JP2004166294A (en) * | 2003-12-24 | 2004-06-10 | Victor Co Of Japan Ltd | Transmitting apparatus and receiving apparatus for electronic program guide |
| JP2005347893A (en) * | 2004-05-31 | 2005-12-15 | Toshiba Corp | Operation terminal and method for browsing web page of broadcast program thereof |
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| CN1964498A (en) | 2007-05-16 |
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