Track jump controller for correcting information read errors

Details Track jump controller for correcting information read errors Track jump controller for correcting information read errors

1994-12-06

1996-12-31

Epps, Georgia Y.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 32, 369 4428, 369 58, G11B 2734, G11B 700

Patent

active

055901123

ABSTRACT:
A rotation control section rotates a compact disk about twice as fast as a reproduction speed. Data read out by a pickup section are stored into a cache memory and then sequentially read out by a reproduction address generation circuit at a predetermined reproduction speed. When the cache memory runs out of empty storage space, a control circuit returns the pickup section to an inner track. Further, when some error is present in the read-out data, the pickup section is returned to a track where the error has originated so as to reread the data.

REFERENCES:
patent: 4796247 (1989-01-01), Vogelsang
patent: 5195069 (1993-03-01), Nakano
patent: 5420839 (1995-05-01), Tateishi
patent: 5465244 (1995-11-01), Kobayashi et al.

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