CN103731715A - Television receiver capable of automatically adjusting signal synchronization - Google Patents
Television receiver capable of automatically adjusting signal synchronization Download PDFInfo
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- CN103731715A CN103731715A CN201310700455.XA CN201310700455A CN103731715A CN 103731715 A CN103731715 A CN 103731715A CN 201310700455 A CN201310700455 A CN 201310700455A CN 103731715 A CN103731715 A CN 103731715A
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Abstract
The invention relates to a television receiver capable of automatically adjusting synchronization of image signals and audio signals. The television receiver comprises a control structure and a signal synchronization structure. The control structure is used for controlling synchronization of the image signals output from a video processing part and the audio signals output by an audio processing part. The signal synchronization structure is used for detecting frame delay values of the image signals provided by the video processing part according to control of the control structure and delaying frames of the audio signals output by the audio processing part according to the detected frame delay values of the image signals and outputting the synchronized image signals and the synchronized audio signals. According to the television receiver, synchronization of the image signals and the audio signals can be automatically adjusted, the synchronized image signals and the synchronized audio signals are output, the lip synchronization problem is solved, the frames of the audio signals are automatically delayed according to the number of the delayed frames of the image signals, the scene feeling is provided for audiences, and therefore the product performance of products is remarkably improved.
Description
Technical field
The present invention relates to television receiver, especially relate to the synchronization that can automatically regulate picture signal and audio signal, then go output to obtain a kind of television receiver of synchronous picture signal and audio signal.
Background technology
Along with the develop rapidly of the technology such as electricity, electronics, computer and communication, comprise that image or sound equipment etc. carry out synthetic MultiMedia Field to the information of various forms and also obtained huge development.In the process developing rapidly in information communication, be called as the current era of digital revolution, the storage of information and the form of existence, be just transitioned into digitlization from analog form.Image need to be than relatively large information; Along with being used for the development of dynamic image compression standard MPEG (Moving Picture Experts Group) technology of compressed digital video information, the size of DID is diminishing gradually; Progressively in all fields, in every field such as computer, broadcast, household electrical appliance, communication, be suitable for widely digital video and audio frequency at present; And there is the digital device of a collection of applicable digital technology.
Wherein, broadcast and TV in daily life, as information spreading medium easily and effectively, have very important status.
This traditional television receiver structure as shown in Figure 1.
As shown in Figure 1, television receiver consists of following several parts, that is: be provided with an analog to digital converter 101, be used for analog picture signal to convert data image signal to: be provided with a Video processing portion 102, it will be processed into the signal form that an energy shows at picture (not shown) the data image signal of exporting from analog to digital converter 101; Be provided with an audio treatment part 103, it will become one Audio Signal Processing.Can be at the signal form of the enterprising line output of loud speaker (not shown); Be provided with an image efferent 104, it,, by the picture signal of Video processing portion 102 outputs, outputs to picture; Also be provided with an amplifier 105, it outputs to loud speaker after the audio signal of audio treatment part 103 outputs is amplified.
But, as described above, be worth to make audio signal and picture signal to carry out in synchronous situation the signal delay time of check by experiment, if allow Video processing portion 102 work long hours, its performance will decline so, and also can change the time of delay of picture signal.Therefore, if in traditional television receiver, do like that, according to postponing audio signal the signal delay time of prior setting, make picture signal and audio signal that can not be correct be carried out synchronously, result can produce shape of the mouth as one speaks stationary problem.
Summary of the invention
The present invention develops in order to solve the above problems.The object of the present invention is to provide and a kind ofly can automatically regulate picture signal and the synchronized television receiver of audio signal and control method thereof.
Another object of the present invention is to provide a kind of television receiver and control method thereof, and it can regulate automatically according to the frame number of the picture signal being delayed the time of delay of the frame of audio signal, so that output obtains synchronous picture signal and audio signal.
Another object of the present invention is to provide a kind of television receiver and control method thereof, and it can regulate the synchronization of picture signal and audio signal automatically, then goes output to obtain synchronous picture signal and audio signal, to prevent shape of the mouth as one speaks stationary problem.
The problem existing in order to solve prior art, the technical solution used in the present invention is:
The television receiver of automatic regulating signal synchronization, receives by tuner the composite picture signal sending from TV station; Then by Video processing portion, the image signal transformation of exporting from tuner is become to a signal that is suitable for picture; Also by audio treatment part, the audio signal of exporting will be transformed into a television receiver that is suitable for the signal of loud speaker from tuner, comprise following structure: be provided with control structure, with Song, control from the synchronization of the picture signal of Video processing portion output and the audio signal of audio treatment part output; Also be provided with signal synchronization structure, it is by according to the control of control structure, the frame delay value of the picture signal that Video processing portion provides will be detected, and according to the frame delay value of the picture signal detecting, postpone from the frame of the audio signal of audio treatment part output, so that one of output obtains synchronous picture signal and audio signal.
Described signal synchronization structure comprises following structure, that is: be provided with a frame count portion, it is by according to the control requirement of control part, Song Jilu, from the frame number of the picture signal of Video processing portion output with from the frame number of the audio signal of audio treatment part output, then outputs to control part by the frame number value of record; Be provided with a signal delay portion, it is by according to the requirement of control part, the delayed audio signal regular hour from audio treatment part output;
Described frame count portion, by the picture signal of going record to be transfused to and the frame number of audio signal, still only goes to record certain number.
Described frame count portion goes record from the frame number of the audio signal of audio treatment part output; If recorded a certain number of above frame number, so just remove to stop record from the frame number of the picture signal of Video processing portion output.
Described control part removes the frame number of the picture signal frame number being relatively recorded and the audio signal being recorded;
Then by control signal delay portion, the frame that postpones audio signal according to the poor corresponding requirements of frame number more out.
The control method of the television receiver of automatic regulating signal synchronization, be used for regulating from the picture signal of Video processing portion output and the synchronized method of audio signal of exporting from audio treatment part, comprise following several step, that is: be provided with one and go respectively record from Video processing portion with from the frame number of picture signal of audio treatment part output and the step of the frame number of audio signal; Be provided with a frame number when the audio signal frame number being recorded and regulation when consistent, will go the step of interruption logging; Also be provided with one and remove the picture signal that more recorded and the frame number of audio signal, see that the frame number of picture signal is few more how many than the frame number of audio signal, then poorly how much just go to postpone the how many step of audio signal.
When the described audio signal frame number when being recorded is 10, remove the frame number of recording image signal and audio signal.
If the frame number of the picture signal being recorded and audio signal is identical, with regard to not going to postpone audio signal, directly export so.Advantage and effect that the present invention has are: the present invention is by controlling Video processing portion, the frame of delaying automatically audio signal according to the frame number of the picture signal being delayed, therefore can export synchronous picture signal and audio signal, for a kind of sense of being in the action is provided depending on hearer, thereby significantly improve the commodity performance of product.
Accompanying drawing explanation
Fig. 1 is the structure chart of traditional tv receiver.
Fig. 2 is the structure chart of the television receiver of automatic regulating signal synchronization of the present invention.
Fig. 3 is picture signal and the characteristic audio signal curve chart of television receiver of the present invention.
Fig. 4 is the control method flow chart of the television receiver of automatic regulating signal synchronization of the present invention.
The symbol description of accompanying drawing major part
200: television receiver 201: tuner
202: picture 203: loud speaker
204: analog to digital converter 205: Video processing portion
206: audio treatment part 207: control part 208: 209. signal delay portions of frame count portion
210. image efferents 211: amplifier
Embodiment
Below, with reference to accompanying drawing, describe embodiments of the invention in detail.
Fig. 2 is the television receiver structure chart of automatic regulating signal synchronization of the present invention.
As shown in Figure 2, television receiver 200 of the present invention comprises control structure and signal synchronization structure, is provided with a tuner 201 that is:, and it will receive the composite picture signal sending from TV station, and picture signal and the audio signal of output simulation; Be provided with a picture 202 that is used for display image signals: be provided with a loud speaker 203 that is used for output audio signal; Be provided with an analog to digital converter 204, it will be transformed into data image signal the analog picture signal of exporting from tuner 201; Be provided with a Video processing portion 205, it will be processed into a signal form that is suitable for picture 202 the data image signal of exporting from analog to digital converter 204; Be provided with an audio treatment part 206, it will become a signal that is suitable for loud speaker 203 the Audio Signal Processing of exporting from tuner 201; Also be provided with a control part 207, it will be controlled and receive and output composite picture signal, and go to control the synchronization of the picture signal of exporting from Video processing portion 205 and the audio signal of exporting from audio treatment part 206.
And, television receiver 200 of the present invention also comprises following several part, that is: be provided with a frame count portion 208, it is by according to the control of control part 207, the frame number of the audio signal that records the frame number of the picture signal of exporting from Video processing portion 205 and export from audio treatment part 206, then outputs to control part 207 by the frame number value of record; Be provided with a signal delay portion 209, it is by according to the requirement of control part 207, the delayed audio signal regular hour from audio treatment part 206 outputs; Be provided with an image efferent 210, it,, by the picture signal from 205 outputs of Video processing portion, outputs to picture 202; Also be provided with an amplifier 211, it outputs to loud speaker 203 after the audio signal that obtains by signal delay portion 209 postponing is amplified.Tuner 201 will receive the composite picture signal transmitting by a plurality of channels, and goes output composite picture signal by the specified channel of control part 207 in receiving channels.At this moment, tuner 201 will output to analog to digital converter 204 the analog picture signal being included in composite picture signal, and audio signal is outputed to audio treatment part 206: still, as shown in Figure 3, picture signal and audio signal synchronously will be gone afterwards to export again.That is to say, Fig. 3 shows by tuner 201 and obtains the synchronous picture signal of output afterwards and the characteristic of audio signal; To go respectively pictorial images signal and audio signal according to different frame numbers.
Video processing portion 205, for the data image signal that obtains conversion by analog to digital converter 204 is become to a signal scheme that is suitable for picture 202, will carry out a series of signal processing; In the process of processing at this signal, picture signal will postpone the regular hour.
Audio treatment part 206 is exported after the audio signal from tuner 201 output being transformed into an audio signal that is suitable for loud speaker 203.At this moment, audio treatment part 206 is in the process of figure signal, and audio signal is also obtained delay.
Like this, picture signal and audio signal by Video processing portion 205 and audio treatment part 206, postponed respectively; But the characteristic of signal, compare with audio treatment part 206, in Video processing portion 205, will carry out more complicated signal processing, therefore compare with audio signal, picture signal will postpone manyly.In order to prevent this shape of the mouth as one speaks stationary problem causing due to the delay of picture signal, in the present invention, by according to the length of delay of the frame number of picture signal, automatically remove to postpone the frame number of audio signal, thereby go output to obtain synchronous picture signal and audio signal.
Control part 207, in order to play the channel of user's appointment, goes to control the channel selection of tuner 201, allows it receive and exports the composite picture signal of user's specified channel.In addition, when tuner 201 receives the composite picture signal of specific channel, and then go output image signal and audio signal, so, will go to drive frame count portion 208 by control structure, allow the frame number of its recording image signal and audio signal.If recorded the frame number of picture signal and audio signal by frame count portion 208, so, by control structure, remove the frame number of movement images signal and audio signal, and according to result relatively, by 209 Song of signal delay portion, postpone audio signal.
Frame count portion 208, according to the requirement of control part 207, goes record from the frame number of the picture signal of Video processing portion 205 outputs, goes record from the frame number of the audio signal of audio treatment part 206 outputs simultaneously, then, by the frame number of record, outputs to control part 207.Wherein, frame count portion 208 will remove the picture signal of record input and the frame number of audio signal; But the frame number of the audio signal from audio treatment part 206 outputs, only remove to record 10 frame numbers.In recording the process of frame number, if recorded the frame number of 10 audio signals, frame count portion 208 just removes to stop record from the frame number of the picture signal of Video processing portion 205 outputs so, and the frame number of the audio signal up to the present having recorded and picture signal is outputed to control part 207.
Only remove to record in the present invention the frame number of 10 audio signals, this is because the frame number of the audio signal conventionally occurring due to the delay of signal and picture signal is poor 4～6 degree, and the audio signal that the frame number that therefore only goes to record 10 audio signals also can correct judgement be delayed and the frame number of picture signal are poor.But, do not stipulate only to go to record in the present invention the frame number of 10 audio signals.
Signal delay portion 209 is the control requirements according to control part 207, the delayed audio signal regular hour; Now this is described in detail as follows.
The picture signal frame number that control part 207 is relatively recorded by frame count portion 208 and the frame number of audio signal; But the frame number of the picture signal that 10 frame numbers of the audio signal that is recorded are relatively recorded as benchmark will be take.
The result of comparison, compares with the frame number of the audio signal being recorded, if the frame number of picture signal lacks 2, control part 207 will go to control signal delay portion 209 so, make 2 frame numbers of delayed audio signal.Then,
Signal delay portion 209 delays 2 frame numbers of audio signal from audio treatment part 206 outputs by going, and then outputs to amplifier 211.
If result relatively, compares with the frame number of the audio signal being recorded, few 4 of the frame number of the picture signal being recorded, control part 207 will go to control signal delay portion 209 so, make 4 frame numbers of delayed audio signal.Signal delay portion 209, according to the control requirement of the delay of control part 207, goes to delay 4 frame numbers of audio signal from audio treatment part 206 outputs, and then outputs to amplifier 211.
Below with reference to flow chart, the synchronization process that forms audio signal and picture signal in having the television receiver of the present invention of said structure and function is described.
Fig. 4 is a flow chart of the television receiver control method of automatic regulating signal synchronization of the present invention.
As shown in Figure 4, if from tuner 201 output image signals and audio signal, control part 207 will go to drive frame count portion 208 (S401) so.Under this driving condition, frame count portion 208 is by the picture signal frame number and the audio signal frame number (S402) that go respectively record from Video processing portion 205 and audio treatment part 206 outputs.
At this moment, whether frame count portion 208 has reached 10 frame numbers (S403) by the audio signal frame number that goes judgement to be recorded; If the result of judgement, the frame number being recorded not yet reaches 10, and frame count portion 208 will continue the frame number of recorde audio signal so.
If the frame number of the audio signal that the result of judgement is recorded has reached 10, frame count portion 208 stops record from the picture signal frame number of Video processing portion 205 outputs by going so; And up to the present the audio signal of record and the frame number value of picture signal output to control part 207 (S404).
Then, it is benchmark that control part 207 will be take 10 of audio signal frame numbers, carrys out the frame number of movement images signal; And by result relatively, several frame numbers (S405) have been compared delayed image signal with audio signal in Song's judgement.If the result images signal of judgement does not postpone, control part 207 will go to control signal delay portion 209 not go to postpone audio signal (S406) so.
Judged result in deterministic process (S405), if 3 frame numbers of having compared delayed image signal with audio signal, control part 207 will go to control signal delay portion 209 so, allow 3 frame numbers of delayed audio signal; Signal delay portion 209 will control requirement according to the delay of control part 207, after the audio signal of exporting from audio treatment part 206 is delayed to 3 frame numbers, then output to amplifier 211 (S407).
According to embodiment, technological thought of the present invention has been carried out to specific description; But embodiment is only used for illustrating use, notice that it does not limit with Song.In addition, if the personnel of technical field of the present invention can understand in the scope of technological thought of the present invention, can make various embodiments.
Claims (4)
1. the television receiver of automatic regulating signal synchronization, receives by tuner the composite picture signal sending from TV station; Then by Video processing portion, the image signal transformation of exporting from tuner is become to a signal that is suitable for picture; Also by audio treatment part, the audio signal of exporting from tuner is transformed into a television receiver that is suitable for the signal of loud speaker, it is characterized in that comprising following structure:
Control part, is used for controlling the synchronization from the picture signal of Video processing portion output and the audio signal of audio treatment part output;
Signal synchronization structure, according to the control of control structure, the frame delay value of the picture signal that Video processing portion provides will be detected, and according to the frame delay value of the picture signal detecting, postpone from the frame of the audio signal of audio treatment part output, so that one of output obtains synchronous picture signal and audio signal.
2. the television receiver of automatic regulating signal synchronization according to claim 1, is characterized in that described signal synchronization structure comprises following structure:
Frame count portion, it is according to the control requirement of control part, records from the frame number of the picture signal of Video processing portion output with from the frame number of the audio signal of audio treatment part output, then the frame number value of record is outputed to control part;
Signal delay portion, it is by according to the requirement of control part, the delayed audio signal regular hour from audio treatment part output.
3. the television receiver of automatic regulating signal synchronization according to claim 2, is characterized in that: described frame count portion removes to record the frame number of the picture signal being transfused to and the audio signal of exporting from audio treatment part; If recorded a certain number of above frame number, so just remove to stop record from the frame number of the picture signal of Video processing portion output.
4. the television receiver of automatic regulating signal synchronization according to claim 2, is characterized in that: described control part removes the frame number of the picture signal frame number being relatively recorded and the audio signal being recorded; Then by described signal delay portion, according to the frame of the poor delay audio signal of frame number more out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310700455.XA CN103731715A (en) | 2013-12-19 | 2013-12-19 | Television receiver capable of automatically adjusting signal synchronization |
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| CN201310700455.XA CN103731715A (en) | 2013-12-19 | 2013-12-19 | Television receiver capable of automatically adjusting signal synchronization |
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| CN103731715A true CN103731715A (en) | 2014-04-16 |
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| CN201310700455.XA Withdrawn CN103731715A (en) | 2013-12-19 | 2013-12-19 | Television receiver capable of automatically adjusting signal synchronization |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114938456A (en) * | 2022-01-20 | 2022-08-23 | 上海瞳观智能科技有限公司 | VR live broadcast system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114938456A (en) * | 2022-01-20 | 2022-08-23 | 上海瞳观智能科技有限公司 | VR live broadcast system and method |
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Application publication date: 20140416 |