Dynamic magnetic information storage or retrieval – Recording on or reproducing from an element of diverse utility – Card
Patent
1982-08-06
1986-03-25
Richardson, Robert L.
Dynamic magnetic information storage or retrieval
Recording on or reproducing from an element of diverse utility
Card
360100, 360 84, 360 87, 360 722, 360101, 360107, G11B 5004, G11B 580
Patent
active
045787174
ABSTRACT:
A magnetic recording and reproduction apparatus are provided employing a flat, flexible magnetic record member, such as a plastic sheet or card coated with or containing a magnetic recording material and having parallel closely spaced record tracks. In one form, a flexible record card is arcuately deformed into the configuration of a cylinder or a partial cylinder and one or more magnetic transducers are caused to scan a selected circular track of the card and to record on and/or reproduce from the selected track. Rapid relative axial movement between the arcuately deformed card and the transducer is effected until the transducer becomes aligned with a selected track of the card, whereupon transducing is automatically effected for scanning at least a selected portion of such selected track. In a particular form, the selected track is attained by scanning marker recordings provided along, aligned with or between respective of the parallel tracks and generating pulse signals which are fed to an electronic counter. When a selected count of such signals is made, a control signal is generated by the counter, which signal is employed to controllably operate the transducer and/or its movement into engagement of the selected track of the card.
REFERENCES:
patent: 2710191 (1955-06-01), Williams
patent: 2812948 (1957-11-01), Roberts
patent: 3275328 (1966-09-01), Varga
patent: 3286033 (1966-11-01), Lemelson
patent: 3925815 (1975-12-01), Lemelson
patent: 3964095 (1976-06-01), Kihara et al.
patent: 4084198 (1978-04-01), Lemelson
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