Electronic digital logic circuitry – Interface – Logic level shifting
Reexamination Certificate
2007-07-10
2007-07-10
Le, Don (Department: 2819)
Electronic digital logic circuitry
Interface
Logic level shifting
C326S081000, C326S083000
Reexamination Certificate
active
11062874
ABSTRACT:
A signal transmitting system comprising a signal outputting unit and a signal receiving unit is provided. The signal outputting unit receives a first signal and outputs a second signal. The signal receiving unit receives the second signal and outputs a third signal. The signal outputting unit comprises an inverting device which receives the first signal and outputs a first inverted signal, and a signal driving device which receives the first inverted signal and outputs the second signal. The signal driving device comprises two NMOS transistors. The first NMOS transistor has a drain biased by a first voltage, and a gate receiving a control signal. The second NMOS transistor has a gate receiving the first inverted signal, a source biased by a second voltage, and a drain electronically coupled to the source of the first transistor. The drain of the second NMOS transistor outputs the second signal.
REFERENCES:
patent: 5095230 (1992-03-01), Takai et al.
patent: 5896044 (1999-04-01), Walden
patent: 6133757 (2000-10-01), Huang et al.
AU Optronics Corp.
Le Don
Rabin & Berdo P.C.
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