CN101282438A

CN101282438A - Method for synchronization of image and sound as well as video apparatus using the same

Info

Publication number: CN101282438A
Application number: CNA2007101145718A
Authority: CN
Inventors: 陈杰; 李兵
Original assignee: Qingdao Hisense Electronics Co Ltd
Current assignee: Qingdao Hisense Electronics Co Ltd
Priority date: 2007-12-29
Filing date: 2007-12-29
Publication date: 2008-10-08

Abstract

The invention provides a video equipment, which solves problem of asynchronism between pictures and sound by adjusting retardation time of sound. The video equipment comprises a audio processing circuit, a power amplification circuit and a main processor, which also includes a sound retarding device connected between the audio processing circuit and the power amplification circuit, the main processor controls retardation time of the sound retarding device. Compared to the prior video equipment, sound retardation parameters of the video equipment of the invention can be adjusted, thereby essentially solving problem of asynchronism between pictures and sound.

Description

The video equipment of video tone method for synchronous and this method of application

Technical field

The present invention relates to a kind of video tone method for synchronous, relate to a kind of video tone method for synchronous that is used for video equipment more specifically.

Background technology

Along with the raising day by day of living standard and the continuous development of video technique, various video equipments emerge in an endless stream, and its function is also more and more, and the user is also more and more higher to the requirement of video equipment simultaneously.With the television set is example, initial user televiews and only requires TV clear, yet along with the continuous development of TV tech, television function from strength to strength, various video files be can play from original can only TV reception developing into now, DVD, DVB, HDMI or the like comprised.The continuous development of Audiotechnica makes television product perfect more in the performance of sound equally, the user also is more and more higher to the requirement of sound simultaneously, the movie theatre effect of some user in order better to experience video files such as watching film the time, also for television set has been equipped with special audio amplifier, or similar household audio and video system.A lot of users are aspiring after perfection, yet the defective of television system existence at present itself may make these effort that aspire after perfection of user become futile.

The synchronism problem that current television system, especially panel TV system all exist sound playing and image to show.With the LCD TV is example, and generally speaking, voice signal in the liquid crystal television system and picture signal all are to import simultaneously, and voice signal passes through Audio Processing after power amplifier directly plays sound by speaker operation.And picture signal generally need be passed through the two-stage Video processing, at first video processing circuits is to the processing such as decoding video signal of input, issue LCD MODULE with the form of LVDS signal then, the processing of circuit part of LCD MODULE is converted to the data format that is fit to liquid crystal display with the LVDS data and shows.Because picture signal handles than the sound signal processing complexity, adds that image processing step is many that this has just caused sound playing to show situation in advance than image, just the synchronous problem of sound picture.

For above-mentioned defective, current common solution is to increase the sound delay chip or make fixedly duration of sound delay, the drawback of these methods is apparent: for example to different language, because the characteristics difference of speech, the user needs the duration of sound delay to have nothing in common with each other, and the different requirements to sound delay of custom of listening to of different user also have nothing in common with each other.

Summary of the invention

In order to address the above problem, the invention provides a kind of video equipment, comprise audio frequency processing circuit, power amplifier and primary processor, described video equipment also comprises the sound delay device, described sound delay device is connected between described audio frequency processing circuit and the power amplifier, and described primary processor is controlled the delay time of described sound delay device.

Above-mentioned video equipment comprises user's input interface, and described primary processor is controlled the delay time of described sound delay device by the data that read user's input interface.

The data of above-mentioned user's input interface comprise the distance between described video equipment and the user, described primary processor according to video equipment and between user's the delay time of the described sound delay device of distance control.

Above-mentioned video equipment can also comprise the picture time-delay mechanism.

The present invention also provides a kind of video tone method for synchronous of video equipment, comprising: the explicit user interactive interface; Receive the sound delay data; The control sound delay.

The tut delay data can comprise the distance between user and the video equipment.

Said method can also comprise: send test data.This test data can be audio, video data.

Said method can also comprise: receive the picture delay data; The time-delay of control picture.

Compare with existing video equipment,, thereby fundamentally solving the nonsynchronous problem of video equipment video tone because the sound delay parameter of video equipment of the present invention is adjustable.

Description of drawings

Figure 1 shows that the schematic diagram of a common television set 100;

Figure 2 shows that the schematic diagram of television set 100;

Figure 3 shows that a schematic diagram with television set 200 of sound delay chip.

Figure 4 shows that a kind of schematic diagram of using the television set embodiment of video tone method for synchronous of the present invention.

Embodiment

In order to make those skilled in the art person understand the present invention program better, and above-mentioned purpose of the present invention, feature and advantage can being become apparent more, is example with the television set below, and the present invention is further detailed explanation with embodiment in conjunction with the accompanying drawings.

Figure 1 shows that the schematic diagram of a common television set.Television set 100 comprises display screen 190 and loud speaker 180.Figure 2 shows that the theory diagram of television set 100, as shown in the figure, television set 100 comprises video input interface 110, video processing circuits 120, audio input interface 130, audio frequency processing circuit 140, primary processor 150, power amplifier 160, loud speaker 170, display driver circuit 180 and display screen 190.Video input interface 110 receives external data and it is flowed to video processing circuits 120 and carries out Video processing such as video decode, the processed video signal is transported to display driver circuit 180, display driver circuit 180 is that display screen 190 can the data presented form and be delivered to display screen 190 with the processed video conversion of signals, and display screen 190 shows for the user it to be watched.Audio input interface 130 receives the external audio data and it is flowed to audio frequency processing circuit 140, the voice data of 140 pairs of inputs of audio frequency processing circuit carries out processing such as audio decoder, decoded audio signal is flowed to power amplifier 160, power amplifier amplifies this audio signal, be delivered to loud speaker 170 and play, listen to for the user.Each part of 150 pairs of television sets 100 of primary processor is controlled.Because Video processing is bigger than Audio Processing data volume, calculation of complex, therefore, vision signal that receives from video input interface 110 and audio input interface 130 and audio signal are through after the above-mentioned processing simultaneously, and the time that arrives display screen 190 and loud speaker 170 may be variant, promptly has the nonsynchronous problem of video tone, because generally speaking, such difference is not easy to be awared by the user, and therefore, common television set does not all have this is taked any measure.

Figure 3 shows that a theory diagram with television set of sound delay chip.As shown in the figure, television set 200 and television set 100 are compared, many sound delay chips 210, and sound delay chip 210 is connected between audio frequency processing circuit 140 and the power amplifier 160.Different with television set 100, when the voice data of 140 pairs of inputs of audio frequency processing circuit carries out after audio decoder etc. handles, at first decoded audio signal is delivered to sound delay chip 210, audio signal through delay process is fed to power amplifier 160, power amplifier amplifies this audio signal, is delivered to loud speaker 170 and plays.Because the existence of sound delay chip 210, the processing time of audio signal between from the audio input interface to the loud speaker increased, like this, by regulating the sound delay time of sound delay chip 210, the time that audio signal arrives loud speaker just may reach consistent with the time that vision signal arrives display screen, thereby has solved the nonsynchronous problem of video tone to a certain extent.Yet because sound delay chip 210 is arranged on the inside of television set, just can't regulate after appearing on the scene generally speaking, because the television set individuality there are differences, the nonsynchronous problem of video tone can not obtain basic solution again.

Figure 4 shows that the theory diagram of an embodiment of television set of the present invention.Television set 300 comprises video input interface 310, video processing circuits 320, audio input interface 330, audio frequency processing circuit 340, primary processor 350, power amplifier 360, loud speaker 370, display driver circuit 380, display screen 390, sound delay device 400 and user's input interface 410.Video input interface 310 receives external data and it is flowed to video processing circuits 320 and carries out Video processing such as video decode, the processed video signal is transported to display driver circuit 380, display driver circuit 380 is that display screen 390 can the data presented form and be delivered to display screen 390 with the processed video conversion of signals, and display screen 390 shows for the user it to be watched.Audio input interface 330 receives the external audio data and it is flowed to audio frequency processing circuit 340, the voice data of 340 pairs of inputs of audio frequency processing circuit carries out processing such as audio decoder, decoded audio signal is flowed to sound delay device 400,400 pairs of audio signals of sound delay device are carried out delay process, audio signal after the time-delay is flowed to power amplifier 360, power amplifier amplifies this audio signal, is delivered to loud speaker 370 and plays, and listens to for the user.Primary processor 350 is controlled except each part to television set 300.Wherein the time-delay of 400 pairs of audio signals of sound delay device can be adjusted by delay parameter, and primary processor 350 is by controlling the delay time of sound time-delay mechanism 400 to the control of delay parameter.The setting of delay parameter generally has a default value when television set 300 dispatches from the factory, also can be made amendment by primary processor 350, and primary processor 350 can be determined this delay parameter by the data that read user's input interface 410.

Television set 300 can be adjusted delay parameter by following process.At first television set 300 shows a user interface of adjusting delay parameter by display screen 390, this user interface is used for the user is pointed out, to make things convenient for the time that the user imports needs time-delay, after the user is according to the relevant data of the needs input of oneself, primary processor 350 reads this data, and according to these data the delay parameter of sound delay device 400 is made amendment.Primary processor 350 can be made amendment to the delay parameter of sound delay device 400 by iic bus, also can be undertaken by other modes.In order to make the user determine what of time-delay more easily, television set 300 can answer user's requirement to produce a test signal in the explicit user interface, the user according to this test signal determine time-delay how much.Test signal can be the signal of a pair of while input video input interface 310 and audio input interface 330, and its vision signal and audio signal have obvious characteristics and judge that for the user it arrives the time of display screen 390 and loud speaker 370.

Television set 300 also can obtain by other calculating except determining the delay parameter of sound delay device 400 by the data that directly read user interface.For same television set, because aerial transmission of sound and the aerial transmission speed of picture are variant, the sound conversation structure will be come lately when the television set distance users was distant, therefore, television set 300 can be by reading user input the distance that televiews usually of television set and user calculate the delay parameter of sound delay device 400, to reach the audio visual effect of the best.Based on same reason, it is Zao that the eyes that picture is transferred to the user might be sent to user's ear than sound, and this just requires television set 300 to increase a picture time-delay mechanism.The picture time-delay mechanism can be adjusted delay parameter by primary processor equally, and its principle is identical with sound time-delay mechanism 400, no longer describes in detail here.

Compare with common television set, because the delay parameter of television set 300 is adjustable, thereby fundamentally separating The nonsynchronous problem of television set video tone of having determined.

Certainly, above-mentioned explanation is not to be limitation of the present invention, and the present invention also is not limited in above-mentioned giving an example, The variation that those skilled in the art make in essential scope of the present invention, remodeling, interpolation Or replace, also should belong to protection scope of the present invention.

Claims

1, a kind of video equipment, comprise audio frequency processing circuit, power amplifier and primary processor, it is characterized in that: described video equipment also comprises the sound delay device, described sound delay device is connected between described audio frequency processing circuit and the power amplifier, and described primary processor is controlled the delay time of described sound delay device.

2, video equipment according to claim 1 is characterized in that: described video equipment comprises user's input interface, and described primary processor is controlled the delay time of described sound delay device by the data that read user's input interface.

3, video equipment according to claim 2, it is characterized in that: the data of described user's input interface comprise the distance between described video equipment and the user, described primary processor according to video equipment and between user's the delay time of the described sound delay device of distance control.

4, according to claim 2 or 3 described video equipments, it is characterized in that: described primary processor is controlled described sound delay device by iic bus.

5, according to claim 2 or 3 described video equipments, it is characterized in that: described video equipment also comprises the picture time-delay mechanism.

6, a kind of video tone method for synchronous of video equipment comprises:

The explicit user interactive interface;

Receive the sound delay data;

The control sound delay.

7, video tone method for synchronous according to claim 6 is characterized in that: described sound delay data comprise the distance between user and the video equipment.

8, video tone method for synchronous according to claim 6, it is characterized in that: described method also comprises:

Send test data.

9, video tone method for synchronous according to claim 8 is characterized in that: described test data is an audio, video data.

10, video tone method for synchronous according to claim 6, it is characterized in that: described method also comprises:

Receive the picture delay data;

The time-delay of control picture.