Optical card apparatus for re-seeking by moving an optical head

Details Optical card apparatus for re-seeking by moving an optical head Optical card apparatus for re-seeking by moving an optical head

1991-08-14

1993-09-21

McElheny, Jr., Donald E.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 4428, 235476, G11B 700

Patent

active

052474992

ABSTRACT:
In case an optical card having a plurality of tracks parallel with each other and having discriminating numbers inherent to the tracks recorded in the track width direction is moved in the track width direction to read the discriminating numbers and seek the target discriminating number, when the target discriminating number is judged to be unable to be [sought] found within the set number of times or the set time, the optical card will be moved by a minute amount in the tracking direction to make the seeking operation again.

REFERENCES:
patent: 4786792 (1988-11-01), Pierce et al.
patent: 4817067 (1989-03-01), Takahashi et al.
patent: 4885458 (1989-12-01), Horiguchi et al.
patent: 4958339 (1990-09-01), Koyama et al.

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