Patent ID: 7626566

Claim:
An apparatus for adjusting brightness of an inputted video sequence, the inputted video sequence being displayed with an initial brightness at a first time and corresponding to a present control signal level, and, before adjustment, the inputted video sequence being displayed with a decayed brightness at a second time after the first time, the apparatus comprising: an input unit for inputting the present control signal level; a counter for counting time and outputting a notification signal at the second time; a controller, respectively coupled to the input unit and the counter, for receiving the present control signal level and the notification signal, the controller comprising: a first memory unit for storing a first look-up table and a second look-up table, the controller, according to the first look-up table together with the present control signal level, the first time and the second time, determining the initial brightness and the decayed brightness, and, according to the second look-up table together with the initial brightness and the decayed brightness, generating a present compensating parameter, the first look-up table comprising: M time, the first time and the second time being respectively selected from one of the M time, M being a natural number; N control signal levels, the present control signal level being selected from one of the N control signal levels, N being a natural number; and M*N brightness, each of the M*N brightness being respectively corresponding to one of the M time and one of the N control signal levels; and a brightness control unit, coupled to the controller, for receiving the present compensating parameter, adjusting the present control signal level according to the present compensating parameter, and generating an adjusted control signal level to adjust the brightness of the inputted video sequence at the second time from the decayed brightness to the initial brightness.