Method for scanning a card with video signal

Details Method for scanning a card with video signal Method for scanning a card with video signal

1978-03-10

1980-07-08

Moffitt, James W.

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

360 2, 360101, 360 10, 360 81, 360 35, 358127, 235449, H04N 578, G11B 2504

Patent

active

042120373

ABSTRACT:
An apparatus and method are provided for transducing information with respect to record cards such as oblong cards containing magnetic recording material. In one form, a magnetic record card is made to conform or extend parallel to the cylindrical surface of a drum supporting a magnetic transducer which rotates to scan one or more selected tracks of the card. The card may extend in a circular or helical path while scanning occurs or may be driven in such a path during scanning.

REFERENCES:
patent: 1792264 (1931-02-01), Alexanderson
patent: 2900132 (1959-08-01), Burns
patent: 2915596 (1959-12-01), Lyon
patent: 2923921 (1960-02-01), Shapin
patent: 3051777 (1962-08-01), Lemelson
patent: 3218077 (1965-11-01), Morrison
patent: 3803350 (1974-04-01), Lemelson
patent: 3943563 (1976-03-01), Lemelson
patent: 4084198 (1978-04-01), Lemelson

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