Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1998-06-30
2000-07-18
Neyzari, Ali
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
369 13, 369 4413, 369 4426, 3692751, 3692754, 369277, G11B 1110
Patent
active
060916931
ABSTRACT:
An optical recording medium is made up of an optically transparent substrate having a groove and a land which have approximately the same width and are formed spirally or concentrically, where the groove has an optical depth described by (1/8+(1/2)n).lambda., n is 0 or a positive integer and .lambda. is a wavelength of a laser. At least one of two walls defining the groove is zigzag shaped and the groove is capable of having digital information recorded thereon.
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High Density Land & Groove Recording with Modified Optics and PA-MFM Recording; N. Aoyama, Y. Morimoto and T. Miyahara; The Magnetics Society of Japan; pp. 233-238; 1996.
Chu Kim-Kwok
Fujitsu Limited
Neyzari Ali
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