Synchronization extractor responsive to digital signals

Details Synchronization extractor responsive to digital signals Synchronization extractor responsive to digital signals

1980-08-15

1983-01-25

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307269, 307273, 328139, 328 72, 375118, H03K 117, H03B 100

Patent

active

043706177

ABSTRACT:
In order to extract from a digital signal a train of sync pulses faithfully reproducing any phase jitter to which that signal is subjected, a pulse generator with a cadence equal to the reciprocal of the mean bit period is interrupted and restarted by a pulse shaper such as a monoflop in response to each incoming "1" bit. The pulse generator may comprise a second monoflop, triggerable by the first monoflop and provided with a feedback loop including a third monoflop which is inhibited by the first one in the presence of a "1" bit, or a free-running oscillator working into a frequency divider in the form of a pulse counter which is reset by the pulse shaper while the latter inhibits the oscillator.

REFERENCES:
patent: 3713145 (1973-01-01), Butler et al.
patent: 4001716 (1977-01-01), Swanson et al.
patent: 4002987 (1977-01-01), Kuhn

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