Standby, timing shutdown and timing boot controlling device of set top box

Abstract

The invention discloses a standby, timing shutdown and timing boot controlling device of a set top box. The device comprises a mainboard, a front control plate and a power strip. The power strip connects with the mainboard through a flat cable. The front control plate connects with the power strip and the mainboard respectively through two flat cables. The front control plate is provided with a one-chip microcomputer processor used for controlling standby and boot. A host on the mainboard monitors a standby button signal and sends a command to the one-chip microcomputer, the one-chip microcomputer sends a standby signal to the power strip, the power strip reduces power supplied to the mainboard, operation of the mainboard is stopped, only power supply of the one-chip microcomputer and an infrared receiving terminal are reserved, thus low-power standby is realized. A standby control command is sent by the mainboard, an abnormal condition appeared at next boot time caused by that a plurality of state information is not saved timely when power is off is avoided. When detecting a timing shutdown time period, the host sends a command to the one-chip microcomputer, the one-chip microcomputer outputs low level to the power strip, the power strip starts power supply of the mainboard, the set top box restarts, thus timing boot and shutdown functions are realized.

Description

technical field [0001] The invention relates to the technical field of digital TV set-top boxes, in particular to a set-top box standby and timing switch control device. Background technique [0002] In recent years, China's digital TV industry, especially the cable digital TV industry, has continued to develop rapidly. The digital TV set-top box market has developed simultaneously with the overall conversion of digital TV, and the market size has continued to grow. Therefore, the set-top box is becoming an indispensable household device for more and more users. [0003] At present, the normal working power consumption of most digital TV set-top boxes in my country is generally 8 to 15 watts. When most set-top boxes are in the standby state, they only turn off the audio and video output of the set-top box, and then display the indicator light as the standby state. The power consumption in standby mode is almost the same as that in normal operation. The circuit design of thi...

AI Technical Summary

Problems solved by technology

For most set-top boxes, the main CPU needs to be timed to start up regularly after standby, and it is difficult to achieve low power consumption if the CPU needs to work.

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