Optical servo system for magnetic disk

Details Optical servo system for magnetic disk Optical servo system for magnetic disk

1995-02-14

1996-10-08

Hindi, Nabil Z.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369103, 369112, G11B 700

Patent

active

055638686

ABSTRACT:
Coherent light passing through slits produces an optical interference pattern having a fringe spacing related to the spacing of the servo tracks on a magnetic disk. The convolution of the interference pattern with the servo tracks generates a servo error signal.

REFERENCES:
patent: 3720924 (1973-03-01), Aagard
patent: 4104489 (1978-08-01), Satoh et al.
patent: 4123788 (1978-10-01), Kruger
patent: 4253723 (1981-03-01), Kojima et al.
patent: 4486870 (1984-12-01), Pettigrew et al.
patent: 4525826 (1985-06-01), Nakamura et al.
patent: 4558383 (1985-12-01), Johnson
patent: 4794585 (1988-12-01), Lee
patent: 4832464 (1989-05-01), Kato et al.
patent: 4843494 (1989-06-01), Cronin et al.
patent: 4879706 (1989-11-01), Lee
patent: 4879707 (1989-11-01), Getreuer et al.
patent: 4879708 (1989-11-01), Getreuer et al.
patent: 4914645 (1990-04-01), Getreuer et al.
patent: 4961123 (1990-10-01), Williams et al.
patent: 5121371 (1992-06-01), Farnsworth et al.
"Optical Servo Technique Using Moire Fringes," D. M. Hart, IBM Technical Disclosure Bulletin, vol. 16, No. 9, Feb. 1974.
"Optical Servo of Magnetic Recording", A. S. Hoagland, IBM Technical Disclosure Bulletin, Vo. 20, No. 10, Mar. 1979; pp. 4108-4109.
"Monolithic Optical Track Scanner For Magnetic Recording System", R. A. Scranton, IBM Technical Disclosure Bulletin, vol. 25, No. 12, May 1983 pp. 6432-6433.
"Holographically Generated High Resolution Track Servo Pattern For Optical or Capacitive Readout", H. W. Werlich and P. Young, IBM Technical Disclosure Bulletin, vol. 26, No. 6, Nov. 1983; pp. 2951-2952.
"Optical Recording of Servo Pattern on Magnetic Discs", A. Aviram and R. A. Myers, IBM Technical Disclosure Bulletin, vol. 27, No. 7A, Dec. 1984; pp. 3994-3995.

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