Patent ID: 7529466
Filing Date: 2009-05-05
Classification: H04N

Abstract:
1. A signal processing method comprising the steps of: reading a signal having a predetermined time length from signals of content recorded on recording means, assuming the signal to be a candidate signal, reading a signal differing from said candidate signal having said predetermined time length from the signals of content and assuming the signal to be a comparison signal; comparing said candidate signal with said comparison signal in sequence by shifting a signal reading position of said candidate signal and a signal reading position of said comparison signal to generate a comparison result; and detecting, based on the comparison result, a signal of identical content from said recording means, wherein, when the signals are determined to be signals with identical content, a signal with the identical content is stored as said candidate signal in candidate signal storage means, and wherein, when said candidate signal is stored in said candidate signal storage means, noise of said candidate signal is eliminated by using said comparison signal which is determined to be said signal with identical content.