Patent ID: 8508072

Claim:
A standby wake-up circuit configured for determining whether to wake an electronic device powered by a power-supplying module, the power-supplying module being 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 waken, the standby wake-up circuit comprising: an input-signal detecting circuit, comprising: a power-key detecting module having a power key, a first power-on signal terminal and a power-off signal terminal, the standby power being used as an operation-energy source of the power-key detecting module, the first power-on signal terminal being enabled when the power key is adjusted to turn on the electronic device, and the power-off signal terminal being enabled when the power key is adjusted to turn off the electronic device; an input-signal detecting module having a signal-receiving terminal, a signal-outputting terminal and a second power-on signal terminal, the standby power being used as an operation-energy source of the input-signal detecting module, the second power-on signal terminal being enabled when the signal-receiving terminal receiving a signal, and the signal received by the signal-receiving terminal being outputted from the signal-outputting terminal; a multiplexer having a plurality of input terminals and an output terminal, the standby power being used as an operation-energy source of the multiplexer, the power-off signal terminal and the signal-outputting terminal being electrically coupled to a corresponding one of the input terminals of the multiplexer respectively, the multiplexer being configured for selecting one of signals received by the input terminals to the output terminal; and a power controller electrically coupled to the first power-on signal terminal, the second power-on signal terminal and the power-supplying module, the power controller being configured for generating a corresponding waken signal to the power-supplying module according to a status of one of the first power-on signal terminal and the second power-on signal terminal; and a processing module electrically coupled to the power-supplying module and the output terminal of the multiplexer, the main power being used as an operation-energy source of the processing module, and being configured for processing a signal outputted from the output terminal of the multiplexer.