Patent ID: 7765564

Claim:
A method of detecting a television channel change event, the method comprising: capturing a television audio signal in a memory device; and indicating that the television channel change event is detected if (i) a first portion of the television audio signal in the memory device represents sounds above a volume threshold, (ii) a second portion of the television audio signal in the memory device represents sounds below the volume threshold for at least a majority of the second portion of the television audio signal in the memory device, (iii) a third portion of the television audio signal in the memory device represents sounds above the volume threshold, (iv) if the second portion of the television audio signal in the memory device is longer than a first predetermined duration, (v) if the second portion of the television audio signal in the memory device is shorter than a second predetermined duration, and (vi) if the first portion of the television audio signal in the memory device is longer than a third predetermined duration.