Patent ID: 8212930

Claim:
A television receiver, comprising: a display module configured to display a video signal; an illuminance sensor configured to detect an ambient illuminance; a controller configured to automatically determine, based on the detected ambient illuminance, one of a plurality of predetermined primary display grades for controlling at least one display characteristic of the display module, to provide information to allow for user selection of one of a plurality of predetermined secondary display grades corresponding to the determined primary display grade, and to adjust the at least one display characteristic according to the selected secondary display grade, wherein: each predetermined primary display grade includes a first number of values, each predetermined secondary display grade includes a second number of values, the first number of values is greater than the second number of values, the predetermined primary display grades are different from the predetermined secondary display grades that are selectable by a user, the predetermined primary display grades and predetermined secondary display grades are stored in a memory before the ambient illuminance is detected, said one of the plurality of predetermined primary display grades is automatically selected by the controller without user input, and the information provided by the controller to allow for user selection of said one of the plurality of predetermined secondary display grades is automatically displayed after the ambient illuminance is detected by the sensor.