Dynamic information storage or retrieval – Binary pulse train information signal – Binary signal gain processing
Patent
1998-11-18
1999-11-23
Edun, Muhammad
Dynamic information storage or retrieval
Binary pulse train information signal
Binary signal gain processing
369 58, 369 47, G11B 700
Patent
active
059912537
ABSTRACT:
In this invention, in an optical disk on which data is to be recorded in units of one ECC block constructed by 16 sectors, dummy data is recorded at the manufacturing time or at the initial time such as the application starting time, then the dummy data is reproduced to determine a sector with primary defect, the address of the sector which is determined to have the primary defect is recorded on the optical disk, and at the time of data recording, data recording is effected in units of one ECC block while skipping over the sector with the primary defect. The determining condition for the primary defect is a case where address data of the address field cannot be reproduced, or where the number of rows in which the number of error bytes is four or more is five or more. Further, in the optical disk on which data is to be recorded in units of one ECC block, data is recorded at the time of data recording other than the initial time, then the data is reproduced to determine an ECC block having a sector with secondary defect, and data of the ECC block which is determined to have the sector with secondary defect is recorded in an ECC block which is separately prepared. The determining condition for the secondary defect is a case where address data of the address field cannot be reproduced (first condition), where the number of rows in which the number of error bytes is four or more is five or more (second condition), where the number of rows in which the number of error bytes is four or more is not larger than five, the number of rows in which the number of error bytes is four or more is three or more and the number of rows in which the number of error bytes in one block area is four or more is ten or more, or where at least two sector areas in which the number of rows in which the number of error bytes is four or more is five or less and the number of rows in which the number of error bytes is four or more is three or more are present in one block area.
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
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), Funahashi 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.
patent: 5793724 (1998-08-01), Ichikawa et al.
patent: 5805547 (1998-09-01), Yamamuro
Improving Direct Access Storage Device Reclaim, "700 IBM Technical Disclosure Bulletin", vol. 3, No. 4, Sep. 1987, Armonk, NY, 11849 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.
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 Formation 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. 5, 1992.
Toshiba Corporation, partial translation of Japanese patent application 8-129458, filed Oct. 31, 1994, published May 21, 1996.
Edun Muhammad
Kabushiki Kaisha Toshiba
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