Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Patent
1997-03-20
1999-05-04
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
327108, 327575, 323316, 348678, G09G 128, G05F 304
Patent
active
059007745
ABSTRACT:
A direct current controlled differential base voltage generating circuit, applicable to a gain control of an RGB video amplifier for controlling a contrast by a voltage generating circuit in which an input control signal has a voltage within a set range, has a high input impedance. Since a differential base voltage is controlled by an input control signal applied thereto through bases of PNP Darlington-connected transistors, the circuits high input impedance can provide operation when a voltage of the input control signal is about 0 volts. Therefore, the direct current controlled differential base voltage generating circuit can easily interface with a computer controlled alignment system.
REFERENCES:
patent: 4081838 (1978-03-01), Wheeler
patent: 4658205 (1987-04-01), Yamada
patent: 5140181 (1992-08-01), Yoshino
patent: 5339020 (1994-08-01), Siligoni et al.
patent: 5483151 (1996-01-01), Yamashita
patent: 5606339 (1997-02-01), Tsong et al.
patent: 5661530 (1997-08-01), Honda et al.
patent: 5686823 (1997-11-01), Rapp
patent: 5686825 (1997-11-01), Suh et al.
Callahan Timothy P.
Daewoo Electronics Co. Ltd.
Englund Terry L.
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