Method and apparatus for power level control in a display...

Details Method and apparatus for power level control in a display... Method and apparatus for power level control in a display...

2011-07-26

2011-07-26

Hjerpe, Richard (Department: 2629)

Computer graphics processing and selective visual display system

Display driving control circuitry

Display power source

C345S060000, C345S061000, C345S062000, C345S063000

Reexamination Certificate

active

07986316

ABSTRACT:
The invention relates to a method for power level control of a display device and an apparatus for carrying out the method. Classically, a power level mode defining a subfield organization to be used for subfield coding is selected as a function of the average power level of the picture to be displayed for keeping constant the power consumption of the display device. According to the invention, it is proposed to select the power level mode as a function of the input frame frequency in such a way as to have as little as possible deviations from nominal peak white and full white values at the same time that an overloading of the panel power supply is prevented. More particularly, the number of sustain pulses within the video frame and selected by the power level mode is modified as a function of the input frame frequency.

REFERENCES:
patent: 2002/0003522 (2002-01-01), Baba et al.
patent: 0 852 400 (1998-01-01), None
patent: 0 851 400 (1998-07-01), None
patent: 1 437 706 (2004-07-01), None
patent: WO 00/46782 (2000-08-01), None
Search Report Dated May 30, 2006.

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