Frequency-ratio apparatus

Details Frequency-ratio apparatus Frequency-ratio apparatus

1979-03-05

1981-09-22

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

Modulating or demodulating

Frequency

G11B 504

Patent

active

042913438

ABSTRACT:
An apparatus for producing a signal which varies as the ratio of the frequency of a first stream to a second stream. In a preferred embodiment of the apparatus, the first stream is transformed into a first signal of value proportional to the frequency of the first stream, and the second stream is transformed into a second signal that has a value proportional to the product of the second stream frequency times a feedback value. The feedback value is derived from a combination of the first and second signals.

REFERENCES:
patent: 2713677 (1955-07-01), Scott et al.
patent: 2807797 (1957-09-01), Shoemaker
patent: 3181133 (1965-04-01), Seitner
patent: 3488452 (1970-01-01), Gunning et al.

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