Write-once type storage apparatus, control circuit, and...

Details Write-once type storage apparatus, control circuit, and... Write-once type storage apparatus, control circuit, and...

2011-03-08

2011-03-08

Sniezek, Andrew L (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S076000, C360S077040, C360S078040

Reexamination Certificate

active

07903366

ABSTRACT:
A recording processing unit sets a track pitch narrower than a writing width of a recording element so that part of the recorded track overlapped with the unused track is overwritten, and continuously records information on a disk medium toward one direction in accordance with the track pitch. A first offset correcting unit reads a write/read offset from a storage table, in which the write/read offset is measured and saved in advance, and corrects the write/read offset in the state that a reading element is positioned at a target track. A second offset correcting unit corrects a write-once center offset, which is a positional deviation between a read center position of the reading element, which has undergone correction of the write/read offset by the first offset correcting unit, and a center position of an effective track width caused by write-once recording.

REFERENCES:
patent: 6421197 (2002-07-01), Abdelnour
patent: 6483658 (2002-11-01), Nguyen
patent: 2007/0258165 (2007-11-01), Ahn et al.
patent: A 2002-157850 (2002-05-01), None
patent: A 2004-95078 (2004-03-01), None
patent: A 2004-227735 (2004-08-01), None

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