Television and audio external play control circuit thereof

Abstract

The invention is applied to the field of television control, and provides a television and an audio external play control circuit thereof. The audio external play control circuit of the television comprising a power supply module, an on and off detection module, a power amplification module and an audio output control module is adopted, so that the working condition of the power amplification module can be controlled according to voltage change of the power supply module, so the television is prevented from outputting current surge sound to a built-in loudspeaker or an external passive speaker when being turned on and off, meanwhile, output channel handover can be carried out on a left sound channel digital audio signal and a right sound channel digital audio signal according to an access state of the external passive speaker, so that the phenomenon of mixcellaneous interferences occurring when audio play is carried out is avoided. The whole audio external play control circuit of the television has the advantages of simple structure, low cost and small power consumption so as to solve the problems of low audio external play definition, high cost and large power consumption in the prior art.

Description

technical field [0001] The invention belongs to the field of television control, and in particular relates to a television and an audio output control circuit thereof. Background technique [0002] With the continuous development of science and technology, the integration of electronic circuits is getting higher and higher, and the volume is getting smaller and smaller, which greatly promotes the development of TV products from the previous thick and heavy to thin and light, thus giving birth to flat-panel TVs. It has the characteristics of light weight and small volume. Then, for a flat panel TV, its built-in speaker is also becoming smaller and smaller due to volume limitations. However, an unreasonable fixed position of the speaker will lead to problems such as low external sound, large distortion, and large body vibration, which seriously affects the audio playback effect of the TV. [0003] In order to solve the above problems, in the prior art, the flat-panel TV is e...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a TV audio output control circuit, which aims to solve the problems of low audio clarity, high cost and high power consumption in the prior art.

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