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Method and device for shutdown management

A technology of equipment, testing equipment, applied in the field of electronics

Active Publication Date: 2019-09-20
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, if the power supply of the audio op amp circuit is not completely turned off, the audio op amp circuit will play the pulse wave input to it, and will produce a popping sound

Method used

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  • Method and device for shutdown management
  • Method and device for shutdown management
  • Method and device for shutdown management

Examples

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Embodiment Construction

[0042] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0043] The embodiment of the present invention provides a shutdown management method, which can be implemented by a device. Wherein, the device may be a TV or the like in the embodiment of the present invention. The device may include components such as a power detection circuit, a main control circuit, an audio operational amplifier circuit, and a memory. The power supply detection ...

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Abstract

The disclosure relates to a shutdown management method and equipment, and belongs to the technical field of electrons. The method comprises the steps of: by a power supply detection circuit, detecting a shutdown event of preset power supplies in a plurality of power supplies of equipment, wherein the preset power supplies are power supplies in a power supply shutdown time sequence before power supplies of a main control circuit and an audio operational amplification circuit; and when detecting out the shutdown event of the preset power supplies, interrupting audio output from the main control circuit to the audio operational amplification circuit so as to enable the operational amplification circuit to stop playing an audio. By adopting the shutdown management method and equipment disclosed by the disclosure, when the shutdown event of the preset power supplies is detected out, audio output from the main control circuit to the audio operational amplification circuit can be immediately interrupted, and when no audio is output, a pulse wave cannot be generated, so that the possibility of generating the pulse wave is cut off from the root.

Description

technical field [0001] The present disclosure relates to the field of electronic technology, in particular to a shutdown management method and device. Background technique [0002] In daily life, the application of TV is ubiquitous. [0003] Generally, audio is transmitted on the audio signal path inside the TV. The audio signal path is located between the main control circuit and the audio operational amplifier circuit. When the user presses the power-off button of the TV set, multiple power supplies of the main control circuit, the audio operational amplifier circuit and other circuits on the TV set are sequentially turned off according to a predetermined sequence. For example, there are 12V, 8V, 5V, 3.3V power supplies on the motherboard. In the power off sequence, the power supplies that are turned off sequentially from the first to the last are: 3.3V, 8V, 5V, 12V. When the power supply of the main control circuit is turned off, a sharp pulse wave will be generated i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/63H04N5/60
Inventor 董泽鑫
Owner HISENSE VISUAL TECH CO LTD