Patent ID: 7605782

Claim:
A method for adjusting a brightness of a display screen of a display of a system, the method comprising: determining whether a processor is being powered by an internal power source; switching the system into a power conservation mode if the processor is being powered by an internal power source determining whether there is a user signal input into the system; switching the system into an IDLE mode if there is no user signal input; determining whether at least one of certain display related processes is running when in the IDLE mode; maintaining the brightness of the display screen and periodically checking whether at least one of the certain display related processes is running, if at least one of the certain display related processes is running; checking processor usage if at least one of the certain display related processes is not running; and adjusting the brightness of the display screen when in the IDLE mode based on processor usage without turning the display screen off, wherein the certain display related processes are indicative of a user watching a video or program on the display screen, and wherein the certain display related processes include at least one of: playing a CD-ROM; playing a DVD; playing a MPEG file; or playing a video file.