Electronic velocity measurement especially for self-clocking wri

Details Electronic velocity measurement especially for self-clocking wri Electronic velocity measurement especially for self-clocking wri

1980-12-08

1983-07-19

Krawczewicz, Stanley T.

Electricity: measuring and testing

Electrical speed measuring

Including speed analog electrical signal generator

360 73, G01P 346, G01P 352

Patent

active

043946216

ABSTRACT:
A time base signal for controlling the recording of binary data is developed by measuring the velocity of a magnetic record.
The velocity is measured by providing an inductive read head and a magnetoresistive read head which sense the same flux field on the magnetic record. The difference in the outputs of these read heads is a measure of the record velocity.

REFERENCES:
patent: 3479659 (1969-11-01), Chedaker et al.
patent: 4188576 (1980-02-01), Jacobs
patent: 4264934 (1981-04-01), Mattes
M. G. Wilson, "System for Varying Oscillator Frequency", IBM Technical Disclosure Bulletin, vol. 5, No. 11, Apr. 1963.

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