Multi-layer optical information detection by two laser beam and

Details Multi-layer optical information detection by two laser beam and Multi-layer optical information detection by two laser beam and

1994-03-25

1996-09-24

Epps, Georgia Y.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369107, 369112, 369120, 369 4437, 369283, 369288, G11B 700

Patent

active

055597840

ABSTRACT:
An optical information reproducing apparatus having an optical recording medium in which information is recorded in a state that it is optically reproduced, and an optical head for reproducing the recorded information from the recording medium while moving relatively to the recording medium. In the apparatus, images are formed on the recording medium by two laser beams emitted from a light source of the optical head, and the difference between the two laser beams transmitted through the recording medium or reflected by the recording medium is detected.

REFERENCES:
patent: 4465767 (1984-08-01), Oba et al.
patent: 5105410 (1992-04-01), Maeda et al.
patent: 5144606 (1992-09-01), Kadowaki
patent: 5315573 (1994-05-01), Nakao et al.
patent: 5381391 (1995-01-01), Yanagisawa et al.
Y. Hashimoto, Y. Kawata, S. Kawata, "Three-dimensional Cconfocal Optical Memory with Photorefractive Materials," Optics Joint Symposium Kyoto '92, 1992, pp. 39-40.
T. Suhara, H. Nishihara, "Possibility of Super-Resolution Readout in Optical Disc Pickup Heads," Optics, vol. 21, No. 7, 1992, pp. 442-450.

Affiliated with

Also associated with

Rating

Multi-layer optical information detection by two laser beam and does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi-layer optical information detection by two laser beam and , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-layer optical information detection by two laser beam and will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1934953