by using information detectable on the record carrier

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

Child Classifications

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• G11B 27/22 Means responsive to presence or absence of recorded information signals
• G11B 27/24 by sensing features on the record carrier other than the transducing track
• G11B 27/28 by using information signals recorded by the same method as the main recording