Frequency detector circuit

Details Frequency detector circuit Frequency detector circuit

1989-02-28

1990-12-04

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307522, 307525, 307269, 328109, 328120, H03L 700, H03K 906

Patent

active

049755943

ABSTRACT:
A circuit for determining the validity of the frequency of a clock signal is shown. The circuit includes a frequency detector circuit having a synchronizer which receives the clock signal and synchronizes it to a synchronous clock signal. A pattern detector detects an error pattern from the synchronizer and generates an error signal which is transmitted to a latch and stored.

REFERENCES:
patent: 3350580 (1967-10-01), Harrison
patent: 4144448 (1979-03-01), Pisciotta et al.
patent: 4427948 (1984-01-01), Rinaldi
"Variable Frequency Missing Pulse Detector", by Admas, IBM Technical Disclosure Bulletin, vol. 6, No. 7, Dec. 1963.

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