Optical information recording medium and information recording m

Details Optical information recording medium and information recording m Optical information recording medium and information recording m

1998-04-06

2000-10-03

Huber, Paul W.

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

3692753, G11B 509

Patent

active

06128260&

ABSTRACT:
Information is recorded/reproduced on/from an information recording medium in units of sectors each having a preformatted header field and a recording field using a change in optical characteristics due to a phase change. The recording field includes an actual recording field rewritably records information, and a gap field arranged before the actual recording field, having a length set on the basis of a random number, and having no information. The recording start position of the actual recording field is set at random. A guard field recording dummy data and having a length set on the basis of a random number is formed next to the gap field. Start portion degradation in the recording layer due to overwrite is generated only in the guard field.

REFERENCES:
patent: 5216657 (1993-06-01), Nishiuchi et al.
Patent Abstracts of Japan, vol. 013, No. 032 (P-817), Jan. 1989 re JP 63229625A.
Patent Abstracts of Japan, vol. 017, No. 454 (P-1596), Aug. 1993 re JP 05101389A.
Patent Abstracts of Japan, vol. 015, No. 382 (P-1257), Sep. 1991 re JP 03150725A.
Patent Abstracts of Japan, vol. 097, No. 011, Nov. 1997 re JP 09180190A.

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