Data signal timing correction device, filter device, and wireles

Details Data signal timing correction device, filter device, and wireles Data signal timing correction device, filter device, and wireles

1997-08-21

1999-12-07

Chin, Stephen

Pulse or digital communications

Synchronizers

375371, 375372, 370516, H04L 700

Patent

active

059995807

ABSTRACT:
A data signal timing correcting device has a timing difference detecting circuit that detects a direction and magnitude of a timing shift of a data signal relative to a reference clock signal by calculating a difference between a number of reference signal clock pulses and one symbol of the data signal. A timing correction circuit receives a detection result from the timing difference detecting circuit and provides a trigger signal to a data memory that has stored in it the data signal. A counter loads a value of the difference from the different detecting circuit and, depending upon the magnitude and direction of a detected timing shift, the trigger signal is shifted to an earlier or later timing by one clock pulse of the reference clock signal.

REFERENCES:
patent: 3676585 (1972-07-01), Kaneko et al.
patent: 4691248 (1987-09-01), Nishimoto
patent: 5699391 (1997-12-01), Mazzurco et al.
patent: 5835543 (1998-11-01), Mazzurco et al.

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