Computer graphics processing and selective visual display system – Display driving control circuitry
Reexamination Certificate
2006-02-07
2006-02-07
Eisen, Alexander (Department: 2674)
Computer graphics processing and selective visual display system
Display driving control circuitry
C345S211000, C345S098000
Reexamination Certificate
active
06995757
ABSTRACT:
A level converter circuit includes an input terminal adapted to be supplied with a signal swinging from a first voltage to a second voltage lower than the first voltage; a first transistor having a gate electrode connected to the input terminal, and a source electrode connected to ground potential; a second transistor having a gate electrode connected to a drain electrode of the first transistor, a source electrode connected to a supply voltage, and a drain electrode connected to an output terminal; a load circuit connected between the gate electrode of the second transistor and the supply voltage; a third transistor having a source electrode connected to the input terminal, a drain electrode connected to the output terminal, and a gate electrode supplied with a DC voltage higher than the second voltage and lower than the first voltage. The level converter circuit outputs a third voltage higher than the second voltage when the input terminal is supplied with the first voltage, and the level converter circuit outputs the second voltage when the input terminal is supplied with the second voltage.
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Ode Yukihide
Okumura Haruhisa
A. Marquez, Esq. Juan Carlos
Eisen Alexander
Fisher Esq. Stanley P.
Hitachi , Ltd.
Hitachi Device Engineering & Co., Ltd.
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