Information recording and reproducing apparatus

Details Information recording and reproducing apparatus Information recording and reproducing apparatus

1987-05-13

1988-12-06

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

G11B 555, G11B 2018

Patent

active

047899115

ABSTRACT:
In an information and recording and reproducing apparatus using a disc-shaped information recording medium having a plurality of recording tracks, each of which recording tracks is divided into a plurality of sectors, to record and reproduce information on and from the information recording medium on a sector-by-sector basis, when a target sector is detected to be a defective sector whose address can not be reproduced, in the first place, a reference sector, which is positioned preceding the defective target sector and whose address can be reproduced, is detected. Then, a rotational latency time from the detected reference sector to the defective target sector is measured by using:

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