DC restoration circuit for multi-level transmission signals

Details DC restoration circuit for multi-level transmission signals DC restoration circuit for multi-level transmission signals

1996-03-13

1998-12-01

Chan, Jason

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

375287, 375319, 375219, H03L 500

Patent

active

058444394

ABSTRACT:
A DC restoration circuit to correct for baseline wandering in a data receiver is provided. A voltage correction circuit is connected to the received data line to adjust the voltage level of the received data dynamically. The voltage correction circuit is controlled by a feedback circuit which includes a voltage detection circuit configured to detect the peak voltage levels or envelope of the received data. This detected level is then compared to a reference level, and the result of the comparison is used as a control signal for the voltage correction circuit.

REFERENCES:
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patent: 4691235 (1987-09-01), Okui et al.
patent: 4829267 (1989-05-01), Sandusky
patent: 4991034 (1991-02-01), Sato
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patent: 5426389 (1995-06-01), Webster
patent: 5465272 (1995-11-01), Smith
patent: 5486869 (1996-01-01), Cooper
patent: 5663998 (1997-09-01), Neustadt

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