Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1992-09-21
1994-07-19
Psitos, Aristotelis
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
369109, 369120, 369 4426, 3692753, 3692754, G11B 700
Patent
active
053316231
ABSTRACT:
In the optical recording element of the invention, alignments of long thin pits inclined in various directions with respect to the track direction are formed on the tracks and information is recorded therein according to the different inclines of the pits, thereby performing higher-density and larger-volume recording without reducing the spacing between each pit and the track pitch. The invention also discloses an optical data retrieval system for use with the above optical recording element, which scans the pit alignments with a laser beam spot, detects the inclines of the pits by obtaining the distribution of the intensity of reflected light which is caused by light diffraction at the pits, and plays back information in accordance with the inclines. Therefore, not only can the substantially same structure as that of a standard type optical data retrieval system be applied to the invention without making any complicated change, but also cross-talk is less likely to be produced in the read out signals.
REFERENCES:
patent: 4310916 (1982-01-01), Dil
patent: 4562564 (1985-12-01), Bricot et al.
patent: 4707648 (1987-11-01), Minami
patent: 4961182 (1990-10-01), Saito et al.
patent: 4967403 (1990-10-01), Ogawa et al.
patent: 4998234 (1991-03-01), Rees et al.
patent: 5200941 (1993-04-01), Matoba et al.
Deguchi Toshihisa
Matoba Hirotsugu
Terashima Shigeo
Yamaoka Hideyoshi
Huber P. W.
Psitos Aristotelis
Sharp Kabushiki Kaisha
LandOfFree
Optical retrieval system for encoding pit angular data and optic does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical retrieval system for encoding pit angular data and optic, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical retrieval system for encoding pit angular data and optic will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-525899