Sustain driver, sustain control system, and display device

Details Sustain driver, sustain control system, and display device Sustain driver, sustain control system, and display device

2011-06-28

2011-06-28

Beck, Alexander S (Department: 2629)

Computer graphics processing and selective visual display system

Display driving control circuitry

C257S197000, C257S206000, C257S207000, C257S208000, C330S250000, C330S300000, C345S205000, C345S206000, C345S214000, C345S055000, C345S060000, C345S061000, C345S068000, C345S069000

Reexamination Certificate

active

07969429

ABSTRACT:
The collector, emitter, and base of a bipolar transistor circuit are connected to a high side power supply terminal, the drain of a level shift transistor, and a floating power supply terminal, respectively. When a high side output transistor is on, the floating power supply terminal is at the potential of a high potential power supply terminal. The high side power supply terminal is at a potential higher than the potential of the floating power supply terminal by a constant voltage. Turning the level shift transistor on, its drain potential drops below the potential of the floating power supply terminal; The base current flows through the bipolar transistor circuit and the drain potential of the level shift transistor is clamped near the potential of the floating power supply terminal; The bipolar transistor circuit is turned on and its collector current supplies the drain current of the level shift transistor.

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