Burst signal receiving apparatus with different holding times of

Details Burst signal receiving apparatus with different holding times of Burst signal receiving apparatus with different holding times of

1996-03-18

1997-02-04

Chin, Stephen

Pulse or digital communications

Receivers

Automatic baseline or threshold adjustment

348405, H04L 2506

Patent

active

056006799

ABSTRACT:
In receiving an optical digital burst signal in an optical communication system, an optical digital burst signal is converted into an electric digital burst signal. A threshold level is determined from the electric digital burst signal. Based on a threshold signal having the determined threshold level whether each of bits of the electric digital burst signal is in a high level or a low level is identified by an identifying circuit. When a sync pattern is detected from the electric digital burst signal, a hunting signal is generated by a synchronization detecting circuit. The duration time of the threshold signal is selected as one of short and long duration times based on whether the hunting signal is significant or insignificant.

REFERENCES:
patent: 4501022 (1985-02-01), Oswald
patent: 4520480 (1985-05-01), Kawai
patent: 4686709 (1987-08-01), Nawaki
patent: 4769760 (1988-09-01), Kroll
patent: 5014231 (1991-05-01), Reinhardt
patent: 5134632 (1992-07-01), Fletcher
patent: 5461422 (1995-10-01), Hsieh

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