DIFF Subgroup
G11B 19/20 Driving; Starting; Stopping; Control thereof
Introduced: September 1968
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
Of 8 combined children, 4 exist in both systems.
4 codes are CPC-only extensions.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- G11B 19/24 Arrangements for providing constant relative speed between record carrier and head IPC+CPC Available in IPC and CPC
- G11B 19/26 Speed-changing arrangements; Reversing arrangements; Drive-transfer means therefor IPC+CPC Available in IPC and CPC
- G11B 19/28 Speed controlling, regulating, or indicating (G11B19/24 takes precedence) IPC+CPC Available in IPC and CPC