Frequency converter outputting a clock signal having a stable an

Details Frequency converter outputting a clock signal having a stable an Frequency converter outputting a clock signal having a stable an

1994-09-14

1997-03-04

Wambach, Margaret Rose

Electrical pulse counters, pulse dividers, or shift registers: c

Systems

Pulse multiplication or division

377 26, 377 39, 377 52, H03K 2100, G01F 2328

Patent

active

056087705

ABSTRACT:
A frequency converter is provided of which a frequency-dividing ratio is arbitrarily altered and retained after a power is turned off. The frequency converter has a programmable counter which outputs a signal having a desired frequency, a non-volatile memory for storing data for setting the frequency-dividing ratio and a control unit for controlling a writing operation of data stored into the non-volatile memory. The programmable counter, the non-volatile memory and the control unit are accommodated in a single package. The frequency converter may comprise a resonator and an oscillating circuit within the package so that the frequency converter can be treated as a single frequency generator such as a quartz-crystal oscillator.

REFERENCES:
patent: 4251779 (1981-02-01), Kellogg et al.
patent: 4947410 (1990-08-01), Lippmann et al.

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