Interpolation pulse generating device with two-step interpolatio

Details Interpolation pulse generating device with two-step interpolatio Interpolation pulse generating device with two-step interpolatio

1995-10-27

1998-03-31

Chin, Stephen

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

377 24, 364561, 364723, G01B 700

Patent

active

057346887

ABSTRACT:
Signals S.sub.j and S.sub.j-1 that are deviate from each other by a phase value of 2 .pi./M are generated by combining two sinusoidal detection signals. A reference signal .DELTA.S is generated which represents a difference between the signals S.sub.j and S.sub.j-1. An up-pulse or a down-pulse is generated every time the signal S.sub.j or S.sub.j-1 varies by .DELTA.S
. An n-ary reversible ring counter outputs a first count value and a carry or borrow pulse by counting the up-pulse and the down-pulse, and the first count value is used to control the operation of generating the up-pulse or down-pulse. An M-ary reversible ring counter outputs a second count value by counting the carry pulse or the borrow pulse, and the second count value is used to control the operation of generating the signals S.sub.j and S.sub.j-1.

REFERENCES:
patent: 4225931 (1980-09-01), Schwefel
patent: 4307346 (1981-12-01), Kurosawa et al.
patent: 4814704 (1989-03-01), Zerrien, Jr. et al.
patent: 5067089 (1991-11-01), Ishii et al.
patent: 5123742 (1992-06-01), Takizawa et al.
patent: 5218295 (1993-06-01), Nakazato et al.
patent: 5452425 (1995-09-01), Childers et al.

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