IPC Subgroup
G11B 7/0037 with discs
Introduced: January 2000
Last revised: January 2006
Full Title
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor > Recording, reproducing or erasing systems characterised by the shape of the carrier > with discs
Classification Context
- Section:
- PHYSICS
- Class:
- INFORMATION STORAGE
- Subclass:
- INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER