Information storage disc and information recording and reproduci

Details Information storage disc and information recording and reproduci Information storage disc and information recording and reproduci

1997-01-03

1999-01-12

Sniezek, Andrew L.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7804, 360 48, G11B 5596

Patent

active

058597409

ABSTRACT:
An information recording and reproducing apparatus and an information storage disc for use therewith. The information storage disc has ID storage areas formed in predetermined locations in the radial direction of the disc, the ID storage areas storing either sector or track numbers previously and magnetically. In this setup, if the read head is dislodged from the center line of a given track, the read head still reads the sector number correctly. The information recording and reproducing apparatus has the read head and the write head arranged so that they are positioned on a given intermediate track in a substantially aligned manner. With the write head positioned on a given track, the read head is dislodged from that track only by a negligible distance. This allows the read head to read sector and track numbers unfailingly from the disc.

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IBM Technical Disclosure Bulletin, Nov. 1975, vol. 18, pp. 1744-1745.
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