Method and apparatus for testing VCR servos

Details Method and apparatus for testing VCR servos Method and apparatus for testing VCR servos

1991-04-16

1993-11-30

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

324161, G01R 3102

Patent

active

052668932

ABSTRACT:
The capstan and drum servo systems of a VCR are tested by processing the capstan reference signal and the drum reference signal in a microprocessor and displaying information which is useful in diagnosing any defects in either of the servo systems.

REFERENCES:
patent: 4316143 (1982-02-01), Castle
Zimmerman, R. H.; "Measuring Frequency Deviation"; Electronic Industries; Jun. 1965; pp. 100, 101, 107; copy in 324-161.

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