Computer graphics processing and selective visual display system – Display driving control circuitry – Intensity or color driving control
Reexamination Certificate
2008-01-08
2008-01-08
Mengistu, Amare (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
Intensity or color driving control
C345S089000
Reexamination Certificate
active
07317462
ABSTRACT:
A method for luminance compensation of liquid crystal display includes: measuring the original gamma curve of the panel, setting a target gamma curve, inputting an initial gray level to obtain a luminance corresponding to the target gamma curve, finding the adjusted gray level for expressing the luminance from the original gamma curve, repeating the steps stated above to make a lookup table containing plural groups of proportion array. Then calculating the quantity distribution of input gray levels of images, selecting a corresponding proportion array from the lookup table according to the proportion value between dark level and bright level, substituting the adjusted gray levels in the proportion array for the input gray levels, outputting the adjusted gray levels for adjusting the signal intensity can improve the image quality. The method and the device for luminance compensation can adjust the intensity of input signals to obtain better image quality and suit for the image adjustment of various liquid crystal displays or similar displays.
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Chen Cheng-jung
Chen Yi-Fan
Lu Yih-Liang
Shen Yuh-Ren
Lowe Hauptman & Ham & Berner, LLP
Mengistu Amare
Nadkarni Sarvesh J
Vastview Technologies, Inc.
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