Track access apparatus having high-speed random access using a s

Details Track access apparatus having high-speed random access using a s Track access apparatus having high-speed random access using a s

1986-10-15

1989-02-07

Cardillo, Raymond F.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

G11B 555

Patent

active

048035734

ABSTRACT:
Disclosed is an apparatus for gaining high-speed random access to a track in an existing magnetic recording/playback system of the type in which a magnetic head is shifted one track at a time to an adjacent track in response to a forward-feed/reverse-feed signal and the head is positioned at the center of this track by tracking control. When the track number of a track to be accessed is designated, the designated track number is compared with a track number at which the magnetic head is presently located. An apparatus is provided for fast-feeding the magnetic head to a track adjoining the designated track on the basis of the comparison, and for subsequently outputting the forward-feed/reverse-feed signal for the purpose of tracking control.

REFERENCES:
patent: 4536863 (1985-08-01), Giddings
patent: 4630145 (1986-12-01), Thompson et al.

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