CN1897459A - Volume automatic adjusting device for digital program system and its method - Google Patents
Volume automatic adjusting device for digital program system and its method Download PDFInfo
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- CN1897459A CN1897459A CNA2006101068384A CN200610106838A CN1897459A CN 1897459 A CN1897459 A CN 1897459A CN A2006101068384 A CNA2006101068384 A CN A2006101068384A CN 200610106838 A CN200610106838 A CN 200610106838A CN 1897459 A CN1897459 A CN 1897459A
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- program
- recording amount
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- volume
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
- H04N5/602—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for digital sound signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/52—Automatic gain control
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Television Receiver Circuits (AREA)
Abstract
The invention discloses a volume automatic adjusting device for digital program system and its method, comprising a part for transmitting recording volume of currently programe when broadcasting the program; a part for audio treatment of the program to broadcaste and looking up missive recording volume of above program; a gaining part for adjusting the missive volume of the program based on the recording volume in looking up step. According to the recording volume generated in programming the program, this invention can adjust the fifferent missive volume of each program in a certain degree.
Description
One, technical field
The present invention relates to a kind ofly in digital program system, the recording amount that can generate when programming is especially to a certain degree adjusted the volume automatic adjusting device and the method thereof of the digital program system of each program alternative sounds output variable.
Two, background technology
In the broadcasting mode of digital television, the digital television programme signal is that TV station utilizes compression algorithm, for example after compression audio frequency such as Dao Erbei AC-3 audio compression encryption algorithm or MPEG-2 video recording compression algorithm etc. and the video recording data, be loaded in to transmit on the ripple by enfeoffmentization and in transport stream multiplexed on the bit element flow (Transport Stream:TS) form with one and transmit.
Simultaneously, the receiver of digital television is supplied to audio frequency and the video encoding section makes it revert to original audio frequency and video signal from the transport stream that transmits side and send after separating audio data and the video recording data separately.At this moment, the control data that the digital television receiver contains by the transport stream packet of enfeoffmentization only carries out multichannel to the selected channel program the multiplexed transport stream that sends and decomposes the reorganization back and provide programme information to spectators after the transmission ripple automatic tuning of involved selected channel program.
If simulation is broadcast, then the channel number because of VHF band territory only is distributed in the designated television platform, so its channel number is correct consistent with the TV station name, it is according to mpeg 2 transport stream (TransportStream) specification basically that but digital program transmits, and each TV station all uses according to detail specifications separately.
And the channel number in the digital program is represented program code, so the channel in the digital television program then represents a program promptly, audio frequency/video recording stream or additional data service flow etc., but these can be along with situation continueds change of program or current repeater.
And, each TV station, each channel is all different to the setting of the digital television program audio standard that TV station sends.Thus, the digital television receiver needs to make the user all the time in same standard, listens to the device of setting the audio frequency of sending in the program stream differently.
Original analog volume automatic regulating apparatus is after getting the mean value of audio standard, adjusts gain and makes its value be presented as desirable fiducial value.
When this original analog volume automatic regulating apparatus is applied to digital television, if the volume change of institute's sound import is than the output outside then can wishing greatly.
Three, summary of the invention
The purpose of this invention is to provide a kind of after the recording amount of transmitter side insertion programme signal, after receiver side is then found the above-mentioned recording amount that is inserted in the programme signal, adjust the gain volume automatic adjusting device and the correlation technique of digital program system of the gain (gain) of audio frequency amount of amplification according to above-mentioned recording amount.
The objective of the invention is to be achieved through the following technical solutions:
A kind of volume automatic adjusting device of digital program system is characterized in that: the part that transmits the recording amount of current program when it comprises broadcast program; Handle for the program of preparing to play carries out respective audio during program receiving, find the part of the above-mentioned recording amount of sending; Adjust the part of gain of the voice output amount of respective program according to the above-mentioned recording amount found.
The recording amount of above-mentioned current program is best being characteristics in the network information table (NTT) that is included in program-related information (PSI).
Above-mentioned gain is adjusted means and is preferably had following characteristics:
If the above-mentioned recording amount of finding is lower than benchmark, the gain that then improves the voice output amount is if the above-mentioned recording amount of finding than benchmark height, then reduces the gain of voice output amount.
Simultaneously, the method for automatically adjusting volume of the digital program system in another example of the present invention with comprise as the next stage be characteristics:
To the recording amount of broadcast program, audio frequency and video signal decode stage that the back transmits and;
To the broadcast of decoding of the above-mentioned audio frequency that sends and video signal, and the stage of finding after the recording amount of above-mentioned program decoded;
Adjust the gain stage of voice output amount according to the above-mentioned section directory volume of finding.
In the best network information table with the program-related information that is included in program-related information of above-mentioned recording amount is characteristics.
Preferably have following characteristics:
If the above-mentioned recording amount of finding is lower than benchmark, the gain that then improves the voice output amount is if the above-mentioned recording amount of finding than benchmark height, then reduces the gain of voice output amount.
The invention has the beneficial effects as follows: the volume automatic adjusting device of the digital program system in according to the present invention and method thereof, after then can finding the recording amount that sends from transmitting system, automatically regulate the voice output volume, can keep certain volume all the time thus.
Four, description of drawings
Fig. 1 is the simple knot composition of digital program transmitting system in the example of the present invention.
Figure 2 shows that the structure chart of digital television volume automatic adjusting device among the present invention.
Figure 3 shows that the method for automatically adjusting volume flow chart of the digital television system among the present invention.
Figure 4 shows that the method for automatically adjusting volume flow chart of the digital television system in the example of the present invention.
Major part description of symbols in the accompanying drawing
110: image coding portion 120: acoustic coding portion
130: additional data encoding section 140: recording amount insertion section
150: multiplex adapter 160: modulation portion
170: sending part 210: tuning portion
220: demodulation section 230: demultiplexer
240: image-decoding portion 250: display part
260: acoustic coding portion 270: audio treatment part
280: loud speaker 290: data decode
300: programme information generating unit 310: the recording amount is found portion
Five, embodiment
Below, introduce the present invention in conjunction with the accompanying drawings and embodiments.
Fig. 1 is the simple knot composition of digital program transmitting system among the present invention, Figure 2 shows that the structure chart of digital television volume automatic adjusting device among the present invention.
With reference to figure 1, then the structure of transmitting system is for comprising following assembly:
The image coding portion 110 that image data is encoded, the acoustic coding portion 120 that voice data is encoded, additional data to the programme information correspondence carries out coded data encoding section 130, the recording amount of tut data is outputed to the recording amount insertion section 140 of digital coding portion 130, above-mentioned coded data is carried out multiplexed multiplex adapter 150, to the modulation portion 160 that above-mentioned multiplexed data are modulated, send the sending part 170 of above-mentioned modulating data.
The structure of receiving system is for comprising following assembly:
Tuning 210 of program receiving one or more information, the program data of above-mentioned reception is carried out the demodulation section 220 of demodulation, the program data multichannel of above-mentioned demodulation is decomposed into image, sound, the demultiplexer 230 of additional data, output to the image-decoding portion 240 of display part 250 after the data decode with above-mentioned multichannel decomposition, the voice codec portion 260 that exports behind the audio data decoding with above-mentioned multichannel decomposition, the data decoding part 270 that the additional data that above-mentioned multichannel is decomposed is decoded, utilize the additional data of above-mentioned decoding to generate the programme information generating unit 300 that export electronic program information (EPG) back, from above-mentioned additional data, extract the recording amount of recording amount out and find portion 310, find recording amount that portion 310 finds according to above-mentioned recording amount and adjust the audio treatment part 270 that outputs to loud speaker 280 after the output variable of voice data.
With additional picture is reference, and it is as follows to introduce in the example of the present invention with said structure the volume automatic adjusting device in the digital program system.
With reference to figure 1, then for broadcasting digital program, transmitting system is encoded by 110 pairs of image datas of image coding portion, after acoustic coding portion 120 voice datas are encoded, with video recording and the output of audio-video transmission package (TP:TransportPacket) form.
And, in 130 pairs of required additional service information of program of digital coding portion, believe that promptly program specific information and additional information encode.Additional service information comprises: channel number, and the current time, program grade, monophony/stereo, captions, sound is multiplexed, and programm name, program begin/concluding time, program travel direction information etc.These Additional Services data are made up of the program correlation table, and this table has PMT, PAT, CAT, NIT etc.PMT is program Program Map Table (Program mab table), PAT is Program Association Table (PAT:Program Association Table), CAT is CAT Conditional Access Table (Conditional Access Table), and NIT is network information table (NetworkInformation Table).Wherein can transmit a stream of people (Private stream) in the network information table, transmit the recording amount of the program that table is corresponding therewith.Such as, this recording is measured 8 bits and is transmitted.
Above-mentioned program specific information (PSI:Program Specific Information) is the required information of basic operation of operation receiver, PAT (Program Association Table) is arranged, CAT (Conditional Access Table), PMT (Program Management Table) etc., additional information then is made up of the actual information of guiding program, NIT (NetworkInformation Table), SDT (Service Description Table), TDT (Time DateTable), EIT (Event Information Table) etc. belongs to its additional information.
The recording amount of inserting when TV station is absorbed in wherein, recording amount insertion section 140 outputs to digital coding portion 130 and inserts it into to above-mentioned network information table (NIT).Thus, the actual recording amount of current broadcast program will be inserted in the network information table (NIT).
As mentioned above, audio frequency, video recording, additional service information is after being encoded to the MPEG form, is undertaken multiplexedly by multiplex adapter 150, sends by sending part 170 by modulation portion 160 modulation back.Wherein, modulation portion is according to earthwave, cable, and the satellite programming mode is modulated the back and is sent from the RF end of sending part 170.
Simultaneously, receiving system has possessed more than one tuning 210, can select the channel of broadcasting user selection from the programme signal that receives.Demodulation section 220 is broadcast programme information with the modulation system of transmitting system to above-mentioned choosing and is carried out demodulation.That is, according to earthwave, cable, the satellite programming mode is carried out demodulation to modulating data.Above-mentioned demodulation section 220 is built in tuning 210.
After demultiplexer 230 carries out the multichannel decomposition with data multiplexed in the above-mentioned transmitting system, with image, sound, the output of Additional Services data mode.
The image data that above-mentioned multichannel is decomposed outputs to display part 250 after by 240 decodings of image-decoding portion, and voice data outputs to loud speaker 280 after adjusting volumes through audio treatment part 270 after by 260 decodings of voice codec portion.And additional service information is by being output as PSI information and program guiding information after data decoding part 290 decodings.Above-mentioned PSI information and program guiding information comprise PMT, PAT, and CAT, information such as NIT are processed into by programme information (EPG) generating unit 300 and output to display part 250 when the user needs behind the programme information.
Simultaneously, above-mentioned by data decoding part 290 decodings, the recording amount that is recorded in the network information table (NIT) is to find portion 310 by the recording amount to find, and above-mentioned recording amount is found portion 310 will output to audio treatment part 270 by the recording amount that the recording amount is found the current program that portion 310 finds.At this, the recording amount find portion 310 from transmitting system, extract out be inserted into the respective program in the network information table (NIT) the recording amount (for example: 8 bits), can realize thus finding.
At this moment, audio treatment part 270 is to find gain (gain) the back output of voice output amount that recording amount that portion 310 finds is adjusted the program of the current broadcasting that the user sets according to above-mentioned recording amount.That is, if the recording amount is low, the gain that then improves the voice output amount is if recording amount height then reduces the gain of voice output amount.Wherein, the increase and decrease degree of the gain of recording amount depends on the fiducial value of recording amount, and the fiducial value of recording amount can be default value or user defined value.For example, all recording amount sizes are 10 o'clock, and the fiducial value of recording amount can be got its median amount 5.
Figure 3 shows that the method for automatically adjusting volume flow chart of the digital television system among the present invention.
With reference to Fig. 3, find the wave volume that its program recording amount accordingly and user set by receiving system when then the camera of transmitting system setting absorbs respectively, stage S101.
And, above-mentioned recording amount and the preset reference value of finding compared stage S103.At this moment,, then belong to recording amount condition with higher, therefore utilize the gain of gain reduction coefficient reduction tut output volume, stage S105 if the recording amount is bigger than fiducial value.Wherein reducing gain can realize by gain reduction coefficient and sound output volume are taken advantage of in predefined yield value.
And, if the recording amount is lower than fiducial value, then belong to recording amount condition with higher, the gain that therefore utilizes gain amplification coefficient to improve the tut output volume, stage S107.Wherein improving gain can realize by gain amplification coefficient and sound output volume are taken advantage of in predefined yield value.
Above-mentioned gain reduction coefficient and gain amplification coefficient are default constant value, preferably get and the fiducial value contrast, with the numerical value of recording volume inverse ratio.
And, the output adjustment and sound that adopt the gain of tut output volume, stage S109.That is, increase or the attenuation degree according to yield value increases or reduces the voice output amount.
Wherein, if above-mentioned recording amount is identical with fiducial value, then get output sound after the gain of original voice output volume.
As mentioned above, can utilize the recording amount of camera shooting program to adjust the voice output volume of receiver, can stablize the volume that the output user wishes thus all the time.
Figure 4 shows that, more specifically introduce the flow chart of the method for automatically adjusting volume of the digital television system in the example of the present invention.
With reference to figure 4, input recording amount (I) and input volume (vol) during stage S111, deduct preset reference value (ref), thereby calculate recording amount poor (Diff=I-ref) S113 from above-mentioned recording amount (I) in receiving system.
Above-mentioned recording amount difference and 0 is compared, and stage S115 if be set at the 1st selection mode (sel=0) greater than 0, calculates the 1st yield value (Gain0).Wherein the 1st yield value is to take advantage of in benchmark yield value (ref_gain) divided by the value of recording amount poor (Diff) by gain reduction coefficient (x) to calculate stage S117 again.Therefore the 1st all yield values (Total_Gain0) are to take advantage of in above-mentioned input volume (vol) by above-mentioned first yield value (Gain0) to calculate stage S119.That is, by Gain0=ref_gain* (x/Diff), the Total_Gain0=Gain0*vol formula calculates.
But if the comparative result of S115 is that above-mentioned recording amount poor (Diff) is less than or equal to 0, then the 2nd selection mode (sel=1) calculates the 2nd yield value (Gain1), stage S121.Wherein the 1st yield value is to take advantage of in benchmark yield value (ref_gain) divided by the value of recording amount poor (Diff) by gain amplification coefficient (y) to calculate again.Therefore the 2nd all yield values (Total_Gain1) are to take advantage of in above-mentioned input volume (vol) by above-mentioned first yield value (Gain1) to calculate stage S123.That is, by Gain1=ref_gain* (y/Diff), the Total_Gain1=Gain1*vol formula calculates.
Thus, calculate the 1st or the 2nd all yield values, then its yield value becomes all yield values, can adjust the voice output amount according to this yield value, stage S125, and the voice output amount can not stablized output with the recording quantitative changeization.
By the content of above explanation, those skilled in the art can carry out various change and modification in the scope that does not depart from the technology of the present invention thought.Therefore, technical scope of the present invention is not limited to the content of putting down in writing among the embodiment, and must be determined by claims.
Claims (6)
1, a kind of volume automatic adjusting device of digital program system is characterized in that: the part that transmits the recording amount of current program when it comprises broadcast program; Handle for the program of preparing to play carries out respective audio during program receiving, find the part of the above-mentioned recording amount of sending; Adjust the part of gain of the voice output amount of respective program according to the above-mentioned recording amount found.
2, the volume automatic adjusting device of digital program system according to claim 1 is characterized in that: the recording amount is included in the network information table of program-related information.
3, the volume automatic adjusting device of digital program system according to claim 1, it is characterized in that it comprises following gain and adjusts means: if the above-mentioned recording amount of finding is lower than benchmark, then improve the gain of voice output amount, if the above-mentioned recording amount of finding than benchmark height, then reduces the gain of voice output amount.
4, the method for automatically adjusting volume in a kind of digital program system is characterized in that it comprised as the next stage:
To the recording amount of broadcast program, audio frequency and video signal are decoded the stage that transmit the back;
To the broadcast of decoding of the above-mentioned audio frequency that sends and video signal, and the stage of finding after the recording amount of above-mentioned program decoded;
Adjust the gain stage of voice output amount according to the above-mentioned section directory volume of finding.
5, the method for automatically adjusting volume in the digital program system according to claim 4, it is characterized in that: the recording amount is included in the network information table of program-related information.
6, the method for automatically adjusting volume in the digital program system according to claim 4, it is characterized in that: if the above-mentioned recording amount of finding is lower than benchmark, then improve the gain of voice output amount, if the above-mentioned recording amount of finding than benchmark height, then reduces the gain of voice output amount.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050077964 | 2005-08-24 | ||
| KR1020050077964A KR20070023411A (en) | 2005-08-24 | 2005-08-24 | Control apparatus and method for automatic volume level of digital broadcasting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1897459A true CN1897459A (en) | 2007-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101068384A Pending CN1897459A (en) | 2005-08-24 | 2006-07-31 | Volume automatic adjusting device for digital program system and its method |
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| Country | Link |
|---|---|
| KR (1) | KR20070023411A (en) |
| CN (1) | CN1897459A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105163237A (en) * | 2015-10-14 | 2015-12-16 | Tcl集团股份有限公司 | Multi-channel automatic balance adjusting method and system |
-
2005
- 2005-08-24 KR KR1020050077964A patent/KR20070023411A/en not_active Application Discontinuation
-
2006
- 2006-07-31 CN CNA2006101068384A patent/CN1897459A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105163237A (en) * | 2015-10-14 | 2015-12-16 | Tcl集团股份有限公司 | Multi-channel automatic balance adjusting method and system |
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| Publication number | Publication date |
|---|---|
| KR20070023411A (en) | 2007-02-28 |
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