Optical recording medium having recording pits of different shap

Details Optical recording medium having recording pits of different shap Optical recording medium having recording pits of different shap

1996-03-25

1998-03-03

Dinh, Tan

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

3692751, G11B 724

Patent

active

057243395

ABSTRACT:
The present invention provides a light-reproduction medium, data stored therein being reproduced by detecting light transmitted therethrough and/or light reflected therefrom, including (a) a substrate formed on a surface thereof with at least two recording pits having different level from the surface of the substrate, each of the recording pits having a cross-section selected from at least two different shapes, the cross-section being defined as viewed in a direction perpendicular to a direction in which the light-reproduction medium is moved relative to an optical head, and (b) a magnetic film formed on the surface of the substrate. The present invention provides high density without improving mastering technology. That is, the present invention provides a light-reproduction medium having memory density several times greater than a conventional CD-ROM without changing CD-ROM fabrication technique, driving method and an optical head structure, resulting in significantly increased capacity of an optical disc or an optical card.

REFERENCES:
patent: 5204852 (1993-04-01), Sakagawa et al.
patent: 5357499 (1994-10-01), Nomoto
patent: 5359591 (1994-10-01), Nomoto
patent: 5453969 (1995-09-01), Psaltis et al.
patent: 5471455 (1995-11-01), Jabr
patent: 5528576 (1996-06-01), Nishikawa
patent: 5559787 (1996-09-01), Nomoto
patent: 5572508 (1996-11-01), Satoh et al.
patent: 5577016 (1996-11-01), Inagaki et al.

Affiliated with

Also associated with

Rating

Optical recording medium having recording pits of different shap 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 recording medium having recording pits of different shap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical recording medium having recording pits of different shap will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2255779