Circuit for restoring bits transmitted by a series signal

Details Circuit for restoring bits transmitted by a series signal Circuit for restoring bits transmitted by a series signal

1995-12-13

1999-05-04

Vo, Don N.

Pulse or digital communications

Receivers

Automatic baseline or threshold adjustment

375371, 375375, H04L 2506, H04L 2510

Patent

active

059011815

ABSTRACT:
The present invention relates to a circuit for restoring bits transmitted by an asynchronous signal, including a comparator of the signal level with a discrimination threshold; a sampling circuit taking several samples from the comparator output for each time interval corresponding to a bit; a circuit for generating an analysis signal at a frequency substantially equal to the bit transmission speed; and an analysis circuit to correct the discrimination threshold according to the difference between two phase values corresponding to the phase relationships with respect to the analysis signal of two consecutive sample transitions, and/or correct the phase of the analysis signal with respect to the bit transmission depending on the sum of the two said phase values.

REFERENCES:
patent: 4418406 (1983-11-01), Ogawa
patent: 5105447 (1992-04-01), Iwane
patent: 5233930 (1993-08-01), Zato
French Search Report from French Patent Application 94 16012, filed Dec. 30, 1994.

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