Method of measuring track displacement on a magnetic tape

Details Method of measuring track displacement on a magnetic tape Method of measuring track displacement on a magnetic tape

1991-06-07

1993-02-23

Rosenberger, Richard A.

Optics: measuring and testing

By polarized light examination

With light attenuation

356373, 356375, 324214, 324216, G01B 1114, G01N 2784

Patent

active

051894912

ABSTRACT:
A method and an apparatus for obtaining a displacement condition of a track in a longitudinal direction thereof on a magnetic tape on which a periodic signal is recorded by detecting a signal position from image information obtained by imaging said track while moving the magnetic tape and/or the image device in the longitudinal direction of the track.

REFERENCES:
patent: 2530564 (1950-11-01), Blanky
patent: 3825821 (1974-07-01), Forster
patent: 3988530 (1976-10-01), Ikegami et al.
"Interchangeability of Recorded Magnetic Video Tapes for Video Tape Recorders" Standards of Electronic Industries Association of Japan, Magnetic Tape Format, Sep. 1969, Prepared By VTR Technical Commitee, pp. 12, 18.

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