Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1998-06-16
2000-10-31
Saras, Steven J.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345204, 327 94, G09G 336
Patent
active
061409936
ABSTRACT:
A circuit for transferring high voltage analog video signals while enabling the use of conventional low voltage logic levels includes a first transistor powered by a high voltage power source to bias a pass transistor at a high voltage level. The pass transistor receives a high voltage video signal and because of the high voltage bias is able to pass the video signal without attenuation of the signal due to feedthrough effects, thus preserving the fidelity of the video signal. A second transistor provides a ground potential which operates to turn OFF the pass transistor, thus disabling the transfer of the video signal therethrough. A third transistor operatively coupled to the first transistor operates to turn OFF the first transistor when the second transistor is in operation.
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Hangzo Nianglamching
Pathak Saroj
Payne James E.
Rosendale Glen A.
Atmel Corporation
Kumar Srilakshmi
Saras Steven J.
Schneck Thomas
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