Patent ID: 8319895

Claim:
A signal detection method for an electronic device comprising a plurality of terminals to receive signals from a plurality of sources corresponding to the terminals, comprising the following steps: providing a sequence index for each terminal; providing a plurality of weighting numbers for the electronic device; comparing the sequence indexes of the terminals to determine a detection sequence when the electronic device is turned on or the sources change; detecting the terminals according to the detection sequence; adding one of the weighting numbers to the sequence index of the terminal with signal traffic; wherein the detection sequence begins at the terminal with a largest sequence index and ends at the terminal with a smallest sequence index; and wherein the weighting numbers comprise a first weighting number added to the sequence index of the terminal with the signal traffic, a second weighting number added to the sequence index of the terminal without the signal traffic but connected to a corresponding source, and a third weighting number added to the sequence index of the terminal not connected to a corresponding source.