Digital variable in-lock range phase comparator

Details Digital variable in-lock range phase comparator Digital variable in-lock range phase comparator

1995-10-10

1997-04-08

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By phase

327 9, 327 10, 327 12, H03K 522

Patent

active

056191480

ABSTRACT:
A novel method and apparatus providing an all digital phase comparator of two binary signals which employs a type of cross correlation of two binary signals and provides a 2bit binary word uniquely representative of phase alignment. The method can be carried out using a pair of flip-flop (FF) circuits, each FF having a docking input and a data input, and where each FF has a delay in series with its data input.

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