Optical disc

Details Optical disc Optical disc

1995-11-29

1997-08-12

Hindi, Nabil

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

G11B 724

Patent

active

056573103

ABSTRACT:
An optical disc comprising transparent substrate, a phase-changing material layer disposed on the transparent substrate and made of a material which is phase-changeable by radiation of a light beam, a reflecting film layer disposed on the phase-changing material layer, and a cooling layer disposed between the phase-changing material layer and the reflecting layer, wherein the cooling layer has a heat conductivity ranging from 0.25 J/cmKs to 20.00 J/cmKs. The optical disc of the present invention has such a structure that a crystal phase portion of the phase-changing material layer shows a higher light absorptivity than that of the amorphous phase portion and exhibits a high carrier to noise ratio (C/N ratio) irrespective of a line speed upon rotational driving of the optical disc.

REFERENCES:
patent: 5341358 (1994-08-01), Kobayashi et al.

Affiliated with

Also associated with

Rating

Optical disc 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 disc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disc will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-166229