Information recording and reading apparatus having recording err

Details Information recording and reading apparatus having recording err Information recording and reading apparatus having recording err

1985-07-03

1987-06-09

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

360 43, G11B 509

Patent

active

046724834

ABSTRACT:
An information recording and reading apparatus for a recording medium, such as a magnetic disc or optical disc, which operates under the control of a central controller. The information recorded in the medium is stored in a memory and checked for errors during a time period subsequent to the recording operation by reading the recorded data in a read-after-write process. A comparator compares the content of the memory and the read-after-write signal to determine whether an error has occurred. If an error is detected, the data is re-recorded in a different part of the recording medium.

REFERENCES:
patent: 3827078 (1974-07-01), Bauer
patent: 4167760 (1979-09-01), Decker

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