Grayscale voltage generating circuit and method

Details Grayscale voltage generating circuit and method Grayscale voltage generating circuit and method

2005-08-24

2008-12-09

Robinson, Mark A. (Department: 4163)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C330S148000, C377S065000, C377S075000, C345S690000

Reexamination Certificate

active

07463231

ABSTRACT:
The grayscale voltage generating circuit comprises an input/driving stage circuit amplifying an input voltage and output stage circuits receiving a output voltage from the input/driving stage circuit, outputting one of the grayscale voltages, and having a capacitor to keep a voltage level of the grayscale voltage. The output stage circuits are sequentially switched to be connected with the input/driving stage circuit, and an output voltage from the input/driving stage circuit is fed to the plurality of output stage circuits in order. Each of the output stage circuits outputs the grayscale voltage based on a voltage held in the capacitor irrespective of connection with the input/driving stage circuit.

REFERENCES:
patent: 6967531 (2005-11-01), Seymour
patent: 2002/0050970 (2002-05-01), Kajihara et al.
patent: 6-348235 (1994-12-01), None
patent: 11-281953 (1999-10-01), None
patent: 2002-366112 (2002-12-01), None

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