Method and apparatus for detecting an edit point on a record med

Details Method and apparatus for detecting an edit point on a record med Method and apparatus for detecting an edit point on a record med

1981-08-05

1984-08-14

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

360 13, G11B 1518, G11B 2702

Patent

active

044660294

ABSTRACT:
An edit point, such as a splice edit point on a record medium of the type having data recorded in at least one data track and a periodic control signal recorded in a control track, is detected. The periodic control signal includes an address signal for identifying recurring intervals on the record medium, with data being recorded in the data tracks in successive ones of such recurring intervals. The address signal normally is incremented from one interval to the next. Upon reproduction, the address signal is reproduced, and successive predictive address signals are generated, from one interval to the next, as a function of at least an initial one of the reproduced address signal. When an address signal reproduced in an interval differs from the predictive address signal generated for that interval, the occurrence of the splice point is detected.

REFERENCES:
patent: 3714382 (1973-01-01), Sykes
patent: 3727203 (1973-04-01), Crossman

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