High density information disc
Hybrid disc and method and apparatus for discriminating same
Information disk of grooved, metal-coated crosslinked polymeric
Information read/write medium
Information recording disc having an anti-reflection layer...
Information recording disc having an anti-reflection layer...
Information recording discs
Information recording disk
Information recording medium and information recording device
Information recording medium with concentric spacers and cut-awa
Information storage medium
Irreversible optical recording medium by formation of...
Limited play data storage media and associated methods of...
Machine-readable optical disc with reading-inhibit agent
Machine-readable optical disc with reading-inhibit agent
Machine-readable optical disc with reading-inhibit agent
Machine-readable optical disc with reading-inhibit agent
Magneto-optical recording medium and process for producing...
Method and apparatus for correcting focus in an optical recordin
Method and structure for intensifying track seeking signals...