IPC Main Group
G11B 23/00 Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PHYSICS
- Class:
- INFORMATION STORAGE
- Subclass:
- INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
Related Keywords
CARTRIDGES for record carriersCASSETTES for record carriers
9 direct subcodes
Child Classifications
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- G11B 23/02 Containers; Storing means
- G11B 23/14 providing ability to repeat location, e.g. using sprocket holes
- G11B 23/16 Record carriers with single track for recording at spaced intervals along the track thereof, e.g. for speech or language training
- G11B 23/18 Record carriers with multiple tracks, e.g. with complementary and partial tracks such as paired "stereo" tracks
- G11B 23/2 with provision for splicing to provide permanent or temporary connections
- G11B 23/28 indicating prior or unauthorised use
- G11B 23/3 with provision for auxiliary signals
- G11B 23/38 Visual features other than those contained in record tracks or represented by sprocket holes
- G11B 23/5 Reconditioning of record carriers; Cleaning of record carriers