Optical storage in discs having multiple data layers

Details Optical storage in discs having multiple data layers Optical storage in discs having multiple data layers

2008-06-24

2008-06-24

Neyzari, Ali (Department: 2627)

Dynamic information storage or retrieval

Systems having plural physically distinct independent tracks...

Having layered storage medium

C369S112020

Reexamination Certificate

active

07391700

ABSTRACT:
Optical pick-up apparatus for retrieving data stored on an optical storage disc having a plurality of record layers (6, 7), the radiation beam reflected back from the disc when a first layer (7) is irradiated comprising radiation reflected back from the first layer (7) and radiation reflected back from one or more of the other layers(6). A spatial filter (8) is provided which is arranged and configured to spatially filter the radiation beam so as to cause the radiation reflected by the first record layer (7) and the radiation reflected by any of the other record layers (6) of the optical storage disc to be spatially separated, such that at least a substantial portion of the radiation reflected back from the other layers (6) can be selectively eliminated from the radiation beam prior to retrieval therefrom of the data.

REFERENCES:
patent: 5202875 (1993-04-01), Rosen et al.
patent: 5255262 (1993-10-01), Best et al.
patent: 6385157 (2002-05-01), Nakano
patent: 7082093 (2006-07-01), Magnitskii et al.

Affiliated with

Also associated with

Rating

Optical storage in discs having multiple data layers 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 storage in discs having multiple data layers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical storage in discs having multiple data layers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2798079