Computer graphics processing and selective visual display system – Display driving control circuitry – Display power source
Reexamination Certificate
2006-11-14
2006-11-14
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
Display power source
C345S080000, C345S087000, C345S098000, C345S100000, C345S204000, C345S205000, C345S206000, C345S212000, C345S213000, C330S127000, C330S199000, C330S250000
Reexamination Certificate
active
07136058
ABSTRACT:
A signal line drive circuit according to the present invention has: a latch circuit which latches digital pixel data; a D/A converter which converts a latch output from the latch circuit into an analog video signal; an AMP which amplifies the analog video signal converted by the D/A converter; and a signal selection circuit which selects a signal line to which the analog video signal amplified by the AMP is supplied. The AMP has: an odd number of inverters which are cascade-connected; capacitor elements which are respectively connected between stages of the inverters and between an input terminal of the inverter on a first stage and an output terminal of the inverter on a last stage; a first power supply line which supplies a power supply voltage to the inverter on the first stage; and a second power supply line which supplies a power supply voltage to inverters other than the inverter on the first stage. The accuracy of the AMP can be improved by separating the power supply line for only the inverter on the first stage.
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patent: 2001/0035862 (2001-11-01), Nakamura et al.
Fujiwara Hisao
Hayashi Hirotaka
Karube Masao
Kitani Masakatsu
Nakamura Kazuo
Hjerpe Richard
Nguyen Jennifer T.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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