Magnetic recording/reproducing device which discriminates record

Details Magnetic recording/reproducing device which discriminates record Magnetic recording/reproducing device which discriminates record

1988-08-31

1990-10-30

Faber, Alan

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7804, 360 7808, G11B 555

Patent

active

049672940

ABSTRACT:
A magnetic recording/reproducing device which has a track search function to discriminate a recorded track from an unrecorded track for all tracks formed in a magnetic disc. In the magnetic recording/reproducing device, in accordance with signals output from a magnetic head when the magnetic head is moved to positions lying at least adjacent to the central position of a track accessed, with a predetermined position on the magnetic disc designated as a reference position, it is determined whether each accessed track is a recorded track or an unrecorded track. Data representing the check results are stored in memory corresponding to the track numbers respectively given to the tracks. This assures an accurate track search.

REFERENCES:
patent: 4698702 (1987-10-01), Miyake
patent: 4710832 (1987-12-01), Itoh
patent: 4734799 (1988-03-01), Miyake
patent: 4811133 (1989-03-01), Nakadai et al.
patent: 4825324 (1989-04-01), Miyake et al.
patent: 4843496 (1989-06-01), Marchetti

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