Lip synchronization detection device and method

A detection device and detection method technology, which is applied in the direction of television, electrical components, image communication, etc., can solve the problem of being unable to objectively detect sound-lip synchronization errors, etc., and achieve the effects of simple structure, fast response, and high test accuracy

Inactive Publication Date: 2013-09-18
SANYO TECH CENT SHENZHEN +1
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a detection device and method for the size of the lip synchroniza

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  • Lip synchronization detection device and method
  • Lip synchronization detection device and method
  • Lip synchronization detection device and method

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Embodiment Construction

[0039] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0040] figure 1 Shown is a lip synchronization detection device 100 according to an embodiment of the present invention, and the lip synchronization detection device 100 is used to detect a lip synchronization error of an audio and video player 200 . The audio and video player 200 mentioned here includes televisions (such as LCD TVs, plasma TVs, etc.), projectors, home theaters, and other devices capable of simultaneously playing video and audio. In addition, the connection mentioned herein includes electrical connection and communication connection, as well as direct connection and coupling conne...

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Abstract

The invention discloses a lip synchronization detection device and a lip synchronization detection method, which are used for detecting lip synchronization error of an audio and video player. The device comprises an audio and video signal generator, a photoelectric sensor and a detector, wherein the audio and video signal generator is used for generating a video signal and an audio signal and periodically outputting the video signal and the audio signal to the audio and video player at the same frequency, so that the audio and video player correspondingly plays a video test signal and an audio test signal; the photoelectric sensor is used for receiving the video test signal and converting the video test signal into an electric signal from an optical signal; and the detector is used for receiving the audio test signal from the audio and video player, receiving the video test signal from the photoelectric sensor and determining the lip synchronization error of the audio and video player by comparing the curves for changes of the voltages of the audio test signal and the video test signal over time. The lip synchronization detection device and the lip synchronization detection method have the advantages of quick detection response, high test accuracy and capabilities of directly reflecting whether the lip synchronization error exists in data and obtaining a specific value of the lip synchronization error.

Description

technical field [0001] The invention relates to an audio and video signal detection device and method, in particular to a lip synchronization detection device and method. Background technique [0002] In audio and video players (such as television receivers), image signals (or video signals) and sound signals (or audio signals) have different encoding and decoding methods, and the transmission and processing channels are also different. Image and sound signals are processed by the receiver. Finally, when it is finally presented to the audience, it is not completely synchronized, and there will be deviations. When this deviation is within a small range, due to the characteristics of human eyes and ears, ordinary people basically cannot feel it, and this basically does not affect people's audio-visual experience. However, with the high resolution of image signals, the codec and processing of image signals become more and more complicated, resulting in a relatively large delay...

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Application Information

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IPC IPC(8): H04N17/00H04N17/02
Inventor 廖瑛强温学萍
Owner SANYO TECH CENT SHENZHEN
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