Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2007-06-27
2011-10-25
Osorio, Ricardo L (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S102000
Reexamination Certificate
active
08044899
ABSTRACT:
Methods and apparatuses for backlight calibration are described. The apparatus100comprises a backlight unit102comprising a plurality of light sources120, at least one photo-sensor103adapted to measure the light emitted by the backlight unit102, a photo-sensor controller112coupled to the photo-sensor103for controlling the photo-sensor(s)103, a backlight driving circuit104coupled to the light sources120for providing individual driving on each light source, a signal generator114coupled to the photo-sensor controller112and the backlight driving circuit104for controlling the operation timing of photo-sensors103and each of the light source120such that lighting conditions from each of the light source can be acquired, and a processing unit111coupled to the photo-sensor103and the backlight driving circuit104for analyzing the measurement data from the photo-sensors103and providing an adjustment signal to the backlight driving circuit104to achieve uniform lighting conditions of the backlight unit102. Also described is a method comprising the steps of providing saved settings for backlight driver, providing a modified timing sequence to backlight driver and photo sensor202, measuring light conditions of each individual light source or each individual group of light sources in backlight unit203, comparing measurement data with predefined light conditions205, calculating the adjustment required on backlight drivel to achieve desired light conditions, and saving calculated adjustment as new settings for backlight driver207.
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Chen Shou Lung
Ng Pak Hong
Tsai Chen Jung
Burke Margaret A.
Hong Kong Ella Cheong
Hong Kong Applied Science and Technology Research Institute Comp
Osorio Ricardo L
Yip Sam T.
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