Electronic digital logic circuitry – Signal sensitivity or transmission integrity – Input noise margin enhancement
Reexamination Certificate
2005-10-25
2005-10-25
Tan, Vibol (Department: 2819)
Electronic digital logic circuitry
Signal sensitivity or transmission integrity
Input noise margin enhancement
C326S081000, C326S119000, C326S121000, C327S206000, C327S427000
Reexamination Certificate
active
06958623
ABSTRACT:
A noninverting transistor switch having only a first terminal, a second terminal and a third terminal includes a transistor connected to the second and third terminals, the transistor having an on switching state in which current is able to pass between the second and third terminals and an off switching state in which current is interrupted from passing between the second and third terminals. The transistor switch also includes a voltage stabilizer connected to the second and third terminals. The transistor switch further includes a CMOS inverter connected to the first terminal, the second terminal, the transistor and the voltage stabilizer. In use, the CMOS inverter interrupts the passing of current between the voltage stabilizer and the second terminal when the transistor is in its off switching state.
REFERENCES:
patent: 5594361 (1997-01-01), Campbell
patent: 6259292 (2001-07-01), Congdon
patent: 6639777 (2003-10-01), Congdon
Kriegsman & Kriegsman
Tan Vibol
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