Electronic digital logic circuitry – Interface
Reexamination Certificate
2005-12-20
2005-12-20
Chang, Daniel D. (Department: 2819)
Electronic digital logic circuitry
Interface
C327S166000, C327S176000
Reexamination Certificate
active
06977522
ABSTRACT:
A first converter circuit converts a state signal, whose level is constant or slowly varies during a predetermine period of time, into a pulse signal to allow the signal to propagate across an electrically insulating area. A second converter circuit converts the pulse signal, which has propagated through an insulating circuit, into the original state signal or a signal having the same characteristics as the original state signal.
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Amishiro Masatsugu
Kikuchi Mutsumi
Murabayashi Fumio
Sase Takashi
Tabuchi Kenji
Chang Daniel D.
Hitachi , Ltd.
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