NRZ Data phase detector

Details NRZ Data phase detector NRZ Data phase detector

1981-02-25

1983-02-01

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

307516, 328133, 329 50, 375120, H03L 706

Patent

active

043719740

ABSTRACT:
A digital phase detector is provided for NRZ data phase detection. In a phase locked loop application, the detector generates a variable duration pulse between a data transition and a positive transition of the recovered clock, and generates a fixed duration pulse between the positive clock transition and the next negative clock transition. The difference in duration between the variable and fixed pulses provides phase indication.

REFERENCES:
patent: 2521789 (1950-09-01), Grosdoff
patent: 3986125 (1976-10-01), Eibner
patent: 3989931 (1976-11-01), Phillips
patent: 4017803 (1977-04-01), Baker
patent: 4184122 (1980-01-01), Clark et al.
patent: 4191976 (1980-03-01), Braun

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