Telephonic communications – Subscriber line or transmission line interface
Reexamination Certificate
2006-09-19
2006-09-19
Tsang, Fan (Department: 2614)
Telephonic communications
Subscriber line or transmission line interface
C379S399020, C379S413020, C379S413040
Reexamination Certificate
active
07110531
ABSTRACT:
An isolation system with analog communication across an isolation barrier includes an isolation barrier circuit having at least one isolation element; a digital to analog circuit having an analog output connected to the isolation barrier and an input for receiving an input digital signal to be communicated across the isolation barrier; and an analog to digital circuit having an input coupled to the analog output of the isolation barrier circuit for providing a digital output signal.
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Boyko Daniel T.
Josefsson Olafur
Prendergast Colm J.
Wilson James
Analog Devices Inc.
Iandiorio & Teska
Singh Ramnandan
Tsang Fan
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