EP 1090391 A1 20010411 - MULTI-LAYERED PHOTOCHROMIC OPTICAL DATA DISK
Title (en)
MULTI-LAYERED PHOTOCHROMIC OPTICAL DATA DISK
Title (de)
MEHRSCHICHTIGE PHOTOCHROMISCHE OPTISCHE DATENPLATTE
Title (fr)
DISQUE OPTIQUE PHOTOCHROME MULTICOUCHE DE MEMORISATION DE DONNEES
Publication
Application
Priority
- US 9823194 W 19981102
- US 6379797 P 19971031
Abstract (en)
[origin: WO9923650A1] A 2.5-dimensional optical storage medium (101) is formed from multiple layers of photochromic molecules embedded in a polymer matrix separated by transparent separating layers (107). The medium (101) is moved into position in three dimensions for two-photon single beam information writing. The information thus written can be read bit-by-bit or page-by-page. In the latter case, an area is illuminated, and the fluorescence is detected by a CCD camera.
IPC 1-7
IPC 8 full level
B32B 3/00 (2006.01); G11B 7/004 (2006.01); G11B 7/0045 (2006.01); G11B 7/005 (2006.01); G11B 7/0055 (2006.01); G11B 7/24 (2006.01); G11B 7/244 (2006.01); G11B 7/257 (2006.01); G11B 7/00 (2006.01); G11B 7/006 (2006.01); G11B 7/14 (2006.01)
CPC (source: EP)
B82Y 10/00 (2013.01); G11B 7/00455 (2013.01); G11B 7/0052 (2013.01); G11B 7/00552 (2013.01); G11B 7/244 (2013.01); G11B 7/245 (2013.01); G11B 7/257 (2013.01); G11B 7/006 (2013.01); G11B 7/14 (2013.01); G11B 2007/0013 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9923650 A1 19990514; WO 9923650 A9 19991202; AU 1582199 A 19990524; EP 1090391 A1 20010411; EP 1090391 A4 20010411; JP 2001522119 A 20011113
DOCDB simple family (application)
US 9823194 W 19981102; AU 1582199 A 19981102; EP 98960155 A 19981102; JP 2000519427 A 19981102