on separate auxiliary tracks of the same or an auxiliary record carrier

Introduced: September 1968

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 > by using information signals recorded by the same method as the main recording > on separate auxiliary tracks of the same or an auxiliary record carrier

Of 4 combined children, 0 exist in both systems.

4 codes are CPC-only extensions.

Child Classifications

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G11B 27/321 CPC only CPC only
G11B 27/322 +3 CPC CPC only CPC only
G11B 27/326 CPC only CPC only
G11B 27/327 +2 CPC CPC only CPC only