Digital phase detector with integrated phase detection

Details Digital phase detector with integrated phase detection Digital phase detector with integrated phase detection

1996-10-07

1998-05-26

Chin, Wellington

Pulse or digital communications

Synchronizers

Self-synchronizing signal

375328, 375354, 375375, 327145, 327151, 331 1R, H03D 318

Patent

active

057578680

ABSTRACT:
A digital phase detector 100 receives a limited input signal 108 and inputs it and a reference oscillation 112 into an EXCLUSIVE NOR gate 102. The output 110 of the EXCLUSIVE NOR gate 102 is input to a gated N-bit counter 104, which produces an N-bit representation of the magnitude of the phase 115 of the signal 108. A sign detector 105 determines the sign of the phase of the signal by sampling the resultant 110 and combines the magnitude of the phase 115 with the sign of the phase to produce a digital numeric representation of the phase of the signal 116.

REFERENCES:
patent: 3843931 (1974-10-01), Sarkilahti
patent: 4736386 (1988-04-01), Nichols
patent: 4773085 (1988-09-01), Cordell
patent: 4849991 (1989-07-01), Arnold et al.
patent: 5084669 (1992-01-01), Dent
patent: 5313170 (1994-05-01), Kojima
patent: 5367538 (1994-11-01), La Rosa et al.
patent: 5369374 (1994-11-01), Kojima

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