Patent ID: 8384828

Claim:
A video display device comprising: a content control unit for displaying a video content on a display screen; a user specifying unit for specifying a user viewing the video content displayed on the display screen; a preference information generation unit being configured to perform a selecting operation a plurality of times so as to generate preference information in which in each said selecting operation a plurality of sample videos is displayed on the display screen to the specified user, where each sample video is displayed on the display screen having at least one different image quality characteristic than another sample video displayed on the display screen; the preference information generation unit receiving an operation from the specified user indicating which of the plurality of sample videos displayed on the display screen is most preferred by the specified user for each said selecting operation, the preference information generation unit being further configured to determine whether the preference information can be generated based on a result or results of the selecting operation or operations which have been performed up to a present time and when a determination result thereof indicates that the preference information can be generated, to terminate a remaining one or ones of the selecting operations, and to generate the preference information based on the result or results of the selecting operation or operations which have been performed up to the present time; and an image quality adjustment unit for adjusting, based on the preference information generated by the preference information generation unit, an image quality for the video content displayed on the display screen to the specified user.