Method for controlling a magnetic disk memory

Details Method for controlling a magnetic disk memory Method for controlling a magnetic disk memory

1986-03-17

1987-11-10

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

360 53, G11B 509

Patent

active

047061367

ABSTRACT:
The storage tracks lying respectively above one another in a disk pack and yielding a cylinder are divided into sectors, whereby a respective plurality of sectors have one respective alternate sector assigned thereto, the latter serving as a useful sector in case a defective sector occurs along the track. The assignment of the defective sectors to the alternate sectors is controlled in such a manner that every occurring defective sector effects a shift of the defective sector and of the following sectors by respectively one sector up to the respectively next, following alternate sector, the shift amplitude after every alternate sector being reduced by one sector length or, respectively, to zero and, in turn, corresponding increased at every following defective sector within the cylinder up to the next alternate sector following thereupon.

REFERENCES:
patent: 3771143 (1973-11-01), Taylor
patent: 4405952 (1983-09-01), Slakmon
patent: 4558446 (1985-12-01), Banba
Wilken, "Two High-Capacity Disc Drives", 1226 Hewlett-Packard Journal, vol. 35, No. 1, Jan. 1984.
Dohermann, "Defect Skipping . . . Devices", IBM Technical Disclosure Bulletin, vol. 19, No. 4, Sep. 1976, pp. 1424-1426.
Boscove et al., "Scattering of . . . Storage Devices", IBM Technical Disclosure Bulletin, vol. 25, No. 10, 1983, pp. 5193-5194.
Seisakusho, "Controlling System for a Rotating Storage Device", Japanese Patent Abstract 56-1967393, 6/11/83.
Fujitsu, "Defect Avoiding Mechanism" Japanese Patent Abstract 56-197080, 6/11/83.
Kitamura, "Format System of a Disk Drive", Japanese Patent Abstract 57-145676.
Takeshitz, "Defective Sector Replacement System", Japanese Patent Abstract 53-111007.
Watkinson, "Data Integrity in Disc Drives", Wireless World, vol. 39, No. 1564, Jan. 1983, pp. 76-78.

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