Standby wake up circuit of electronic device

Abstract

A standby wake-up circuit is configured for determining whether to wake an electronic device which is powered by a power-supplying module. The power-supply module is able to supply a standby power to the electronic device when the electronic device is in standby, and supply a main power to the electronic device when the electronic device is wakened. The standby wake-up circuit comprises an input-signal detecting circuit and a processing module. The input-signal detecting circuit comprises a power-key detecting module, an input-signal detecting module, a multiplexer and a power controller. The power-key detecting module and the input-signal detecting module are configured for detecting whether a signal is inputted. When inputting the signal, the power controller sends out a waken signal for supplying the main power to the electronic device.

Description

【Technical field】 [0001] The present invention relates to the field of display technology, and in particular, to a standby wake-up circuit applied to a liquid crystal television. 【Background technique】 [0002] With the development of science and technology, LCD TVs have gradually replaced traditional TVs and become mainstream TV products because of their high picture quality, light weight and small footprint. However, since most TVs use microprocessors to control the operation process during standby, it is difficult to comply with the EU Eup regulations that the power consumption of TV products in standby mode shall not exceed 0.5W / hour. However, although most manufacturers attach great importance to the issue of reducing the power consumption of microprocessors, the microprocessor itself is not the specialized field of TV manufacturers, so the related improvements have not been able to achieve good results. [Content of the invention] [0003] The purpose of the present ...

AI Technical Summary

Problems solved by technology

However, since most TVs use microprocessors to control the operation process during standby, it is difficult to comply with the relevant regulations in EU Eup that the power consumption of TV products in standby mode should not exceed 0.5 watts per hour

However, although most manufacturers attach great importance to the issue of reducing the power consumption of microprocessors, the microprocessor itself is not the field of expertise of TV manufacturers, so they have not been able to achieve good results in related improvements.

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