Record carriers

Full Title

Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor > Record carriers

Classification Context

Section:

PHYSICS

Class:

INFORMATION STORAGE

Subclass:

INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER

Child Classifications

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• G11B 3/7 characterised by the selection of material or structure; Processes or apparatus specially adapted for manufacturing record carriers
• G11B 3/72 Groove formations, e.g. run-in groove, run-out groove
• G11B 3/78 Multiple-track arrangements
• G11B 3/8 incorporating subsidiary guide means for heads, other than modulated grooves; Part-formed unmodulated grooves for conversion into transducing grooves
• G11B 3/9 with means indicating prior or unauthorised use