IPC Subgroup
G11B 19/28 Speed controlling, regulating or indicating
Introduced: September 1968
Last revised: January 2006
Full Title
Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function > Driving; Starting; Stopping; Control thereof > Speed controlling, regulating or indicating
Classification Context
- Section:
- PHYSICS
- Class:
- INFORMATION STORAGE
- Subclass:
- INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER