Dynamic magnetic information storage or retrieval – Monitoring or testing the progress of recording
Patent
1986-12-05
1989-02-28
Canney, Vincent P.
Dynamic magnetic information storage or retrieval
Monitoring or testing the progress of recording
360 45, 360 31, G11B 2736, G11B 509
Patent
active
048090883
ABSTRACT:
An integrated system for use in a disk drive system for the implementation of write precompensation for recording of data and read window margining for accelerated testing of the disk drive. Both functions are provided by a common delay-line circuitry. The output of the delay line circuit is applied to both window shifting and write precompensation. An on-board read detection error analysis can be performed after installation of the drive in a computer system in its final configuration. Actual read error tolerance based on the overall system in its actual operating condition can thus be obtained. Enhanced data recovery techniques are also facilitated.
REFERENCES:
patent: 4612586 (1986-09-01), Sordello
patent: 4641207 (1987-02-01), Green et al.
Lofgren Karl M. J.
Wilson Ronald E.
Canney Vincent P.
Western Digital Corporation
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