Patent ID: 7659945

Claim:
A video display device comprising: a first unit that processes an input signal provided from a transmission side to make a prescribed video signal; a second unit that modifies a color reproduction of the video signal by using a signal source information and a display device information; and a display unit coupled to the second unit and configured to display the modified color reproduction of the signal; a storage unit to store inverse gamma information for each of a plurality of signal sources and gamma information for each of a plurality of display devices, wherein the second unit comprises: a plurality of first correction circuits that perform a first gamma correction to the input signal according to a type of the signal source, a first switching circuit that correlates a signal corresponding to a predetermined signal source type from among the first corrected gamma signals, wherein the predetermined signal source type is determined by at least one of user operation, a signal source mode selected by a user and prescribed identification information, an error correction circuit for correcting colorimetric error with respect to the correlated signal and to provide a corrected colorimetric error signal, a plurality of second correction circuits that perform a second gamma correction on the corrected colorimetric error signal according to a type of the display device, and a second switching circuit that correlates a signal corresponding to a predetermined display device type from among the gamma-corrected signals.