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mcu reset control circuit and tv

A reset control and circuit technology, applied in the reset field, can solve the problems of high cost, poor stability and reliability, complex reset control scheme, etc., and achieve the effect of low cost, avoiding false reset operation, and simple scheme

Active Publication Date: 2017-12-22
创维集团智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to solve the technical problems of complex, high cost, poor stability and reliability of the existing MCU reset control scheme

Method used

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  • mcu reset control circuit and tv
  • mcu reset control circuit and tv

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Embodiment Construction

[0029] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] The present invention provides an MCU reset control circuit, which is connected with the MCU (not shown in the figure). refer to figure 1 , in the first embodiment, the MCU reset control circuit includes: a monitoring module 10, which is used to receive the input of the DC power supply voltage, and output a valid monitoring signal / invalid monitoring signal according to whether the DC power supply voltage fluctuates or not; The shaking module 20 is used to receive the input of the DC power supply voltage, and according to whether the DC power supply voltage is / is within the allowable voltage range (the allowable voltage range can be pre-set in the anti-shake module 20 according to the actual situation), and the corresponding output is effectively anti-shake Signal / invalid anti-shake signal; voltage conversion m...

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Abstract

The invention discloses an MCU reset control circuit. The MCU reset control circuit includes: a monitoring module for receiving the input of a DC power supply voltage, and correspondingly outputting valid monitoring signals / invalid monitoring signals according to whether or not the DC power supply voltage fluctuates; The anti-shake module is used to receive the input of the DC power supply voltage, and output the valid anti-shake signal / invalid anti-shake signal according to whether the DC power supply voltage is within the allowable voltage range; the voltage conversion module is used to receive the DC power supply voltage Input, convert the input voltage into the MCU power supply voltage and output it to the MCU, and disconnect the output of the MCU power supply voltage according to the received valid monitoring signal and invalid anti-shake signal, so that the MCU can be reset. The invention also discloses a TV set. The solution of the invention is simple and easy to implement, low in cost, does not need to occupy the I / O port of the MCU for reset, occupies less resources, and has wider applicability.

Description

technical field [0001] The invention relates to the technical field of reset, in particular to an MCU reset control circuit and a television. Background technique [0002] Instantaneous abnormality of the TV's AC power supply (for example, the voltage fluctuation of the AC power grid is too large or the TV's power cord is not in good contact with the AC socket, resulting in an abnormal TV's AC power supply) will cause the DC voltage output of the TV power supply to temporarily drop or disappear. , Returning to normal again is called voltage sag. The voltage sag may cause the TV system to enter an abnormal state and cannot be automatically restored. It needs to be turned on again to return to normal, causing inconvenience to users and affecting the overall performance of the TV. [0003] In order to avoid the voltage sag of TV power output caused by abnormal AC power supply, the following methods are often used at present: 1) Add a special AC voltage detection circuit at the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/443H04N21/41
Inventor 徐遥令
Owner 创维集团智能科技有限公司