Method and apparatus for adjusting a brightness of a display screen
AssigneeLG Electronics Inc.
InventorSung Jin Park
Life of this patent
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Abstract
A method and apparatus are provided for adjusting the brightness of a display screen, such as an LCD screen. The method and apparatus are capable of reducing power consumption of the display in a system by determining whether a video intensive operation is being performed on the basis of various parameters such as a CPU usage, operation key words, operation of memory devices such as a hard disk or a CD-ROM device, etc. The method and apparatus adjust the brightness of the display screen an appropriate amount in accordance with the machine's use without user input, and without interfering with video intensive processes.
Claims54
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.
A computer-readable medium having stored thereon a sequence of computer executable instructions which, when executed by a processor, cause the processor to perform the steps of:
- monitoring a system to determine whether at least one of certain display related processes is running;
- maintaining a brightness of a display screen of a display 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;
- and
- reducing the brightness of the display screen if at least one of the certain display related processes is not running without turning the display screen off, 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.
A method for reducing electrical power consumed by a processor controlled display screen, the method comprising:
- checking display screen usage by determining whether a certain device related to screen operation is in use;
- maintaining a brightness of the display screen if the certain device is in use, and checking the display usage by determining whether the certain device is in use after a predetermined delay;
- and
- reducing the brightness of the display screen or turning the display screen off if the certain device is not in use, wherein the certain device includes at least one of:
- a device for playing a CD-ROM;
- a device for playing a DVD;
- a device for playing a MPEG file;
- or
- a device for playing a video file.
An apparatus for reducing electrical power consumed by a processor controlled display screen, the apparatus comprising:
- a processor comprising:
- means for checking display screen usage by determining whether a certain device related to screen operation is in use;
- means for maintaining a brightness of the display screen if the certain device is in use, and checking the display usage by determining whether the certain device is in use after a predetermined delay;
- and
- means for reducing the brightness of the display screen or turning the display screen off if the certain device is not in use, wherein the certain device includes at least one of:
- a device for playing a CD-ROM;
- a device for playing a DVD;
- a device for playing a MPEG file;
- or
- a device for playing a video file.
An apparatus, comprising:
- a processor comprising:
- means for monitoring a system to determine whether at least one of certain display related processes is running;
- means for maintaining a brightness of a display screen of a display 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;
- and
- means for reducing the brightness of the display screen if at least one of certain display related processes is not running without turning the display screen off, 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.
A method for adjusting a brightness of a display screen of a display of a system, the method comprising:
- monitoring the system to determine whether at least one of certain display related processes is running;
- 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;
- and
- reducing the brightness of the display screen if at least one of the certain display related processes is not running without turning the display screen off, 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.
Dependencies are inferred from the claim text.