Apparatus and method for controlling backlight

Details Apparatus and method for controlling backlight Apparatus and method for controlling backlight

2011-08-09

2011-08-09

Nguyen, Kimnhung (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S087000

Reexamination Certificate

active

07995027

ABSTRACT:
An apparatus and a method for controlling backlight are provided. The apparatus for controlling backlight is adapted for driving a backlight module of a display panel, and the backlight module includes M luminance-controlling blocks, in which an ithluminance-controlling block corresponds to an ithluminance data. The apparatus for controlling backlight includes a calculation unit and a driving circuit. The calculation unit receives the ithluminance data to output an ithcontrolling data according to the proportion of the ithluminance data and a maximum luminance data, in which M and i are natural numbers, and i<=M. The driving circuit receives the ithcontrolling data to determine and drive the backlight luminance of the ithluminance-controlling block.

REFERENCES:
patent: 2007/0152949 (2007-07-01), Sakai
patent: 2007/0216636 (2007-09-01), Lo
patent: 2007/0222740 (2007-09-01), Hanada
patent: 2008/0018571 (2008-01-01), Feng
patent: 2008/0129677 (2008-06-01), Li et al.
patent: 2009/0040171 (2009-02-01), Ishizumi et al.
patent: 2009/0268105 (2009-10-01), Kohashikawa et al.

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