Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Patent
1998-06-22
1999-09-21
Edun, Muhammad N.
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
369 59, 369 47, G11B 700
Patent
active
059563095
ABSTRACT:
An apparatus and method for detecting and replacing a defective sector on an optical disk. Recording data and error correction data are recorded on an optical disk at a manufacturing time or an initial time. The recorded data and the error correction data are reproduced in units of one sector. A defective sector is determined when address data in an address field cannot be reproduced or when a number of errors in at least one sector exceeds a specified value. Address data of the defective sector is recorded in a defect list on the optical disk. Recording data and error correction data are successively recorded on the optical disk in a plurality of successive block areas. Defective sectors are skipped and recording data and error correction data are recorded in a unit of one block beginning in a next sector area. When a defective sector is detected after recording the recording data and the error correction data at a time other that the initial time or the manufacturing time, the recording data and the error correction data are recorded in a block area being different than a block area containing the defective sector.
REFERENCES:
patent: 4730290 (1988-03-01), Takasago et al.
patent: 4742507 (1988-05-01), Kuroki et al.
patent: 4774700 (1988-09-01), Satoh et al.
patent: 4791622 (1988-12-01), Clay et al.
patent: 4821254 (1989-04-01), Satoh et al.
patent: 4835757 (1989-05-01), Abiko
patent: 4841498 (1989-06-01), Sugimura et al.
patent: 4885735 (1989-12-01), Fukushima et al.
patent: 4935825 (1990-06-01), Worrell et al.
patent: 4949326 (1990-08-01), Takagi et al.
patent: 4986668 (1991-01-01), Fukushima et al.
patent: 5111444 (1992-05-01), Fukushima et al.
patent: 5130969 (1992-07-01), Sako
patent: 5132956 (1992-07-01), Ichikawa
patent: 5202876 (1993-04-01), Takagi et al.
patent: 5233584 (1993-08-01), Kulakowski et al.
patent: 5235585 (1993-08-01), Bish et al.
patent: 5237553 (1993-08-01), Fukushima et al.
patent: 5271018 (1993-12-01), Chan
patent: 5303219 (1994-04-01), Kulakowski et al.
patent: 5319626 (1994-06-01), Ozaki et al.
patent: 5319627 (1994-06-01), Shinno et al.
patent: 5343453 (1994-08-01), Ogino
patent: 5357381 (1994-10-01), Yasuda et al.
patent: 5418767 (1995-05-01), Gaudet et al.
patent: 5442614 (1995-08-01), Tamegai
patent: 5471449 (1995-11-01), Kaneko et al.
patent: 5508989 (1996-04-01), Funahashi et al.
patent: 5526335 (1996-06-01), Tamegai
patent: 5528571 (1996-06-01), Funahashi et al.
patent: 5541903 (1996-07-01), Funahashi et al.
patent: 5553045 (1996-09-01), Obata
patent: 5574708 (1996-11-01), Kawakami
patent: 5666335 (1997-09-01), Horibe
patent: 5715221 (1998-02-01), Ito et al.
Toshiba Corp. Partial Translation of Jpn. Appln. Kokai Publication No. Hei 8-129458.
"Improving Direct Access Storage Device Reclaim," IBM Technical Disclosure Bulletin, vol. 30, No. 4, Sep. 1987, pp. 1850-1851.
Gregory Hite, "Disk Sparing Methods Affect Capacity And Transfer Rates," Computer Technology Review, pp. 39-42 and 44.
Andrew D. Hospodor, "The Changing Nature of Disk Controllers," Proceedings of IEEE, vol. 81, No. 4, Apr. 1993, pp. 586-594.
"High-Speed Formatting Operation for a Disk File," IBM Technical Disclosure Bulletin, vol. 36, No. 08, Aug. 1993, pp. 673-674.
Hashimoto, Abstract of JP Appln. No. 4-114371.
European Search Report, dated Aug. 18, 1998.
Edun Muhammad N.
Kabushiki Kaisha Toshiba
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