Patent ID: 7812868

Claim:
A signal processing apparatus comprising: a first generating unit configured to generate at least two high-frequency signals using luminance signals of at least two different color components in a video signal, wherein the at least two high-frequency signals include a first high-frequency signal generated by using a first color component concerning first color signals having a first spectral sensitivity and a second high-frequency signal generated by using a second color component concerning second color signals having a second spectral sensitivity lower than the first spectral sensitivity; and a second generating unit configured to generate a high-frequency signal for edge emphasizing processing from the at least two high-frequency signals based upon a relationship between values of the at least two high-frequency signals generated by said first generating unit, the relationship being between values of the first high-frequency signal generated by using the luminance signals of the first color component concerning first color signals having the first spectral sensitivity, and of the second high-frequency signal generated by using the luminance signals of the second color component concerning second color signals having the second spectral sensitivity.