Head shifting apparatus

Details Head shifting apparatus Head shifting apparatus

1984-01-03

1986-12-02

Stephan, Steven L.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Having power driven transducer assembly

360 78, 369 33, G11B 547, G11B 2102

Patent

active

046270434

ABSTRACT:
Disclosed is a head shifting apparatus for shifting a head relative to a recording medium, which includes a shifting mechanism for shifting the head stepwise, and detecting apparatus for detecting when the head reaches a predetermined reference position. Control apparatus controls the shifting mechanism in such a manner that the head is shifted in a first shifting mode where the head is shifted on the basis of a predetermined first shifting step unit increment until the head reaches the reference position. Then it performs normal recording or reproducing. The head is shifted in a second shifting mode where it is shifted on the basis of a predetermined second shifting step unit increment larger than the first shifting step unit increment.

REFERENCES:
patent: 4290088 (1981-09-01), Beecroft
patent: 4399477 (1983-08-01), Bryer
patent: 4473898 (1984-09-01), Ono
patent: 4488187 (1984-12-01), Alaimo
patent: 4514837 (1985-04-01), Rosmalen

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