EP 0858657 A1 19980819 - SINGLE SURFACED SUPER-DENSITY OPTICAL DISCS
Title (en)
SINGLE SURFACED SUPER-DENSITY OPTICAL DISCS
Title (de)
EINSEITIGE OPTISCHE PLATTEN MIT SEHR HOHER DICHTE
Title (fr)
DISQUES OPTIQUES A TRES HAUTE DENSITE A UNE FACE
Publication
Application
Priority
- IB 9701237 W 19970905
- US 70888696 A 19960905
Abstract (en)
[origin: WO9810418A1] A compact disc with digital data optically recorded thereon has two thickness regions. The first thickness region is a central cylindrical region (1.2 mm), the second thickness region is the remaining annular region of the disc (0.6 mm) having a label area (label applied) and has less than 3/4 and more than 1/4 with the thickness of the first region.
IPC 1-7
IPC 8 full level
G11B 7/007 (2006.01); G11B 7/24 (2013.01)
CPC (source: EP)
G11B 7/24 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9810418 A1 19980312; AU 4317197 A 19980326; AU 718994 B2 20000504; EP 0858657 A1 19980819; EP 0858657 A4 20000705; JP H11515131 A 19991221
DOCDB simple family (application)
IB 9701237 W 19970905; AU 4317197 A 19970905; EP 97941171 A 19970905; JP 51242898 A 19970905