Information reading device for a multitrack storage device

Details Information reading device for a multitrack storage device Information reading device for a multitrack storage device

1978-11-21

1980-09-09

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of the amplifier

360 63, G11B 502, G11B 1512

Patent

active

042220815

ABSTRACT:
The difference between the two gain control signals for two amplifiers which correspond to two of a plurality of read heads which have the maximum and minimum output levels is detected. Whether or not the difference exceeds a predetermined value indicates an abnormality of the outputs of the read heads due to dust adhering thereto.

REFERENCES:
patent: 3660821 (1972-05-01), Weber et al.
patent: 3662365 (1972-05-01), Rodriguez et al.
patent: 3879674 (1975-04-01), Dragon
patent: 4091380 (1978-05-01), Yu

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