Patent ID: 8315505
Filing Date: 2012-11-20
Classification: H04N

Abstract:
1. A signal discriminating device comprising: a comparing section comparing a motion magnitude between two fields of an input video signal with one or more predetermined motion magnitude patterns which are provided in correspondence with one or more signal sources, so as to determine one or more degrees of match or mismatch between the motion magnitude and the motion magnitude patterns; and a discriminating section discriminating a signal source of the input video signal in consideration of a degree of certainty or uncertainty of discrimination, the degree of certainty or uncertainty being determined on the basis of the degrees of match or mismatch determined in the comparing section, wherein a plurality of motion magnitude patterns are provided in correspondence with a plurality of signal sources, and wherein the comparing section compares the motion magnitude with each of the plurality of motion magnitude patterns, so as to determine a plurality of degrees of match or mismatch each corresponding to the plurality of signal sources, the discriminating section discriminates, by one operation, the input video signals each corresponding to the plurality of signal sources, on the basis of the plurality of degrees of match or mismatch determined, and the discriminating section performs a weighting process by use of weighting coefficients on the plurality of degrees of match or mismatch, and then calculates the degree of certainty or uncertainty based on the plurality of degrees of match or mismatch which are weighted, in which each of the weighting coefficients has a value in accordance with a kind of signal source.