Optical information recording media and optical information read

Details Optical information recording media and optical information read Optical information recording media and optical information read

1994-05-25

1995-09-05

Epps, Georgia Y.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specific detail of storage medium support or motion production

369273, 369116, G11B 726

Patent

active

054485517

ABSTRACT:
Both guide grooves and lands of an optical information recording medium constitute information tracks, the depth of the guide groove being between approximately .lambda./8 and approximately .lambda./4.7 in optical length and the width of the guide groove being between 0.34R and R, where R represents the beam diameter of a write laser beam on the record film and the power for writing information on each guide groove being differentiated from that for writing information on each land.

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patent: 5084860 (1992-01-01), Maeda et al.
patent: 5109373 (1992-04-01), Ohno et al.
patent: 5199022 (1993-03-01), Suzuki et al.
patent: 5249175 (1993-09-01), Akahira et al.
Mitsuro et al., Optical Recording And Reproducing Device, Mar. 24, 1982, Abstract of Laid Open Japanese Patent Publication No. 57-050330, corresponding to Japanese Patent No. 63-057859.
Kayanuma et al., High Track Density Magneto-Optical Recording Using A Crosstalk Canceler, SPIE vol. 1316 Optical Data Storage (1990), pp. 35-39.
Yamada et al., High Speed Overwritable Phase Change Optical Disk Material, Japanese Journal of Applied Physics, vol. 26 (1987) Supplement 26-4, pp. 61-66.
Jipson et al., Two-Dimensional Modeling Of An Optical Disk Readout, Applied Optics, vol. 22, No. 14, Jul. 15, 1983, pp. 2202-2209.

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