Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Mechanism control by the control signal
Patent
1995-05-23
1996-11-19
Hindi, Nabil Z.
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Mechanism control by the control signal
369 59, G11B 700
Patent
active
055770126
ABSTRACT:
In recording information by shifting the positions of the front edge and the rear edge of each pit on a medium stepwise from specified reference positions according to recording data, the edges of each pit are displaced stepwise with a unit of macro-step of 0.04 .mu.m, to express the data. The positions of the edges with macro-step are further adjusted to be displaced stepwise with a unit of micro-step of 256 kinds, thus suppressing the Inter Symbol Interference. With this adjustment, it is possible to reduce the influence of the Inter Symbol Interference, and hence to perform the recording with high density.
REFERENCES:
patent: 4646103 (1987-02-01), Sugiyama et al.
patent: 4809251 (1989-02-01), Collomby et al.
patent: 4866692 (1989-09-01), Saito et al.
patent: 4928187 (1990-05-01), Rees
patent: 5031168 (1991-07-01), Moore
patent: 5109373 (1992-04-01), Ohno et al.
patent: 5111443 (1992-05-01), Yokogawa
patent: 5161145 (1992-11-01), Ogawa et al.
patent: 5206853 (1993-04-01), Tanaka
patent: 5218591 (1993-06-01), Shimamoto et al.
patent: 5241524 (1993-08-01), Lee
patent: 5345434 (1994-09-01), Ide et al.
patent: 5347505 (1994-09-01), Moritsugu et al.
patent: 5400318 (1995-03-01), Nakayama et al.
patent: 5414689 (1995-05-01), Maeda et al.
patent: 5450381 (1995-09-01), Tsukamura et al.
Journal of the Optical Society of America, vol. 69, No. 1, Jan. 1979, pp. 4-24, H. H. Hopkins; "Diffraction theory of laser read-out systems for optical video discs."
Applied Optics, vol. 26, No. 18, 15 Sep. 1987, pp. 3961-3973, Shigeo Kubota, "Aplanatic condition required to reproduce jitter-free signals in an optical digital disk system."
Patent Abstracts of Japan, vol. 13, No. 129 (P-849), 30 Mar. 1989 & JP-A-63 298 818 (Asahi Chem Ind Co Ltd) 6 Dec. 1988.
SPIE Optical Data Storage '91, vol. 1499, 27 Feb. 1991, Colorado Springs, Co., USA, pp. 419-425, Sukeda et al.: "High speed recording technologies for a magneto-optical disk system."5
Limbach & Limbach
Kobayashi Seiji
Kock Joost D.
Hindi Nabil Z.
Sony Corporation
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