Digitally controlled bit synchronizer

Details Digitally controlled bit synchronizer Digitally controlled bit synchronizer

1990-04-27

1992-12-29

Logan, Sharon D.

Coded data generation or conversion

Digital code to digital code converters

To or from particular bit symbol

375106, 375111, H03M 700, H04L 700

Patent

active

051755440

ABSTRACT:
A digitally controlled bit synchronizer and method for converting a pulse code modulated input signal having a known IRIG code into a filtered NRZ-L formatted output signal in phase with a predetermined clock signal. The bit synchronizer and method utilize a four-pole filter element, peak detector and reset circuits for removing AC offset, a variable controlled oscillator for adjusting the phase of the clock, Miller, Bi-Phase, and NRZ decoders, and a microprocessor for digitally controlling their operation and interconnection.

REFERENCES:
patent: 4020282 (1977-04-01), Halpern
patent: 4112372 (1978-09-01), Holmes et al.
patent: 4617674 (1986-10-01), Mangulis et al.
"Vol. 1, Technical Proposal" submitted to the Navy by Veda, Inc. and dated Jul. 7, 1988.

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