System for realizing standby and awakening of set top box by utilizing singlechip

Abstract

The invention discloses a system for realizing standby and awakening of a set top box by utilizing a singlechip, comprising a microcontroller, an RTC (Real Time Clock) clock chip, a state indication module and a controllable power supply, wherein the microcontroller detects whether a power on / off signal returned by the set top box or an RTC timing awake signal sent by the RTC clock chip is available or not; if the power on signal is available, the microcontroller controls the controllable power supply to supply electricity to a control mainboard of the set top box; the set top box further judges that where the signal comes from and performs corresponding action so as to realize video output or backstage downloading of the set top box; and once the microcontroller detects the power off signal, the set top box writes the timing time to the RTC clock chip, the microcontroller controls the controllable power supply to cut off electricity for each module on the control mainboard of the set top box. The system has lower standby power consumption and can ensure that the effective service life of the set top box is prolonged. Because the system has simple structure and low cost, and is convenient for production and alternation of the prior art, the system is suitable for wide popularization in the field of the set top box.

Description

technical field [0001] The invention relates to a system for realizing standby and wake-up of a set-top box by using a single-chip microcomputer. Background technique [0002] With the development of digital satellite TV and IP TV, the market demand for set-top boxes is increasing; at the same time, global energy is becoming increasingly tense, and environmental protection is becoming increasingly urgent. Therefore, considering the factors of energy saving and environmental protection, how to realize the power-saving design of the set-top box so as to lower the power consumption during standby has become the focus of the industry. [0003] In addition, for a new type of PUSH TV service mode implemented by satellite, it is not only required to realize energy saving in the standby mode of the set-top box, but also requires the set-top box to be able to start automatically at the set time and perform background download tasks, so as to receive the latest information forwarded b...

AI Technical Summary

Problems solved by technology

[0005] The inventor finds that the prior art has at least the following disadvantages in the process of realizing the present invention: the power consumption of the set-top box when it is in the standby state is basically equivalent to the power consumption of the normal operation

[0007] The inventor finds that the prior art has the following disadvantages at least in the process of realizing the present invention: although the power consumption of the set-top box is relatively low when the set-top box is in this standby state, it is still difficult to meet the requirements of Energy Star certification

[0009] In the process of realizing the present invention, the inventor found that the prior art 3 has at least the following disadvantages: After the set-top box is on standby, it cannot automatically wake up and perform background actions, such as background downloading, etc.

At the same time, after the CPU completes the download task, it cannot automatically turn off the power of all modules and enter the standby state automatically.

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