DIFF Subgroup
G11B 27/19 by using information detectable on the record carrier
Introduced: January 1985
Full Title
Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel > Indexing; Addressing; Timing or synchronising; Measuring tape travel > by using information detectable on the record carrier
IPC and CPC are identically structured here. All 3 subcodes exist in both systems.
Child Classifications
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- G11B 27/22 Means responsive to presence or absence of recorded information signals IPC+CPC Available in IPC and CPC
- G11B 27/24 by sensing features on the record carrier other than the transducing track IPC+CPC Available in IPC and CPC
- G11B 27/28 by using information signals recorded by the same method as the main recording IPC+CPC Available in IPC and CPC