Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Patent
1997-03-24
1999-01-12
Tran, Thang V.
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
369 48, G11B 700
Patent
active
058598235
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: 5442614 (1995-08-01), Tamegai
patent: 5471449 (1995-11-01), Kaneko 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.
Hospodor, et al., "The Changing Nature of Disk Controllers", Proceedings of the IEEE, vol. 81, No. 4, Apr. 1, 1993, pp. 586-594.
"High-Speed Formatting Operation for a Disk File", IBM Technical Disclosure Bulletin, vol. 36, No. 8, Aug. 1, 1993, pp. 673-674.
Hashimoto, Japanese patent abstract for 4-114371, filed Sep. 5, 1990, published Apr. 15, 1992.
Toshiba Corporation, partial translation of Japanese patent application 8-129458, filed Oct. 31, 1994, published May, 1996.
Improving Direct Access Storage Device Reclaim, "700 IBM Technical Disclosure Bulletin", vol. 3, No. 4, Sep. 1987, Armonk, NY, 1849 and 1851.
Gregory Hite, Disk Sparing Methods Affect Capacity and Transfer Rates, "Computer Technology Review", vol. 11, No. 14, Dec. 11,1991, Los Angeles, 39-42 and 44.
Kabushiki Kaisha Toshiba
Tran Thang V.
LandOfFree
Optical disk device method for detecting and replacing a defecti does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical disk device method for detecting and replacing a defecti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disk device method for detecting and replacing a defecti will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1522253