Electronic digital logic circuitry – Signal sensitivity or transmission integrity
Reexamination Certificate
2006-07-11
2006-07-11
Tan, Vibol (Department: 2819)
Electronic digital logic circuitry
Signal sensitivity or transmission integrity
C363S017000, C327S564000, C327S510000, C257S531000
Reexamination Certificate
active
07075329
ABSTRACT:
A logic signal isolator comprising a transformer having a primary winding and a secondary winding; a transmitter circuit which drives said primary winding in response to a received logic signal, such that in response to a first type of edge in the logic signal, a signal of a first predetermined type is supplied to the primary winding and in response to a second type of edge in the logic signal, a signal of a second predetermined type is supplied to said primary winding, the primary winding and the transmitter being referenced to a first ground; and the secondary winding being referenced to a second ground which is galvanically isolated from the first ground and said secondary winding supplying to a receiver circuit signals received in correspondence to the signals provided to the primary winding, the receiver reconstructing the received logic signal from the received signals.
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Chen Baoxing
Haigh Geoffrey
Analog Devices Inc.
Iandiorio & Teska
Tan Vibol
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