System for playing back a programme recorded on a...

H - Electricity – 04 – N

Patent

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352/32.2, 352/10

H04N 5/76 (2006.01) G11B 5/82 (2006.01) G11B 7/007 (2006.01)

Patent

CA 1228416

ABSTRACT: Prerecorded video discs will generally be provided with a programme which has originally been recorded on film,which programme is transformed into a television signal by scanning the film frames. Owing to the difference between the standards for film and television employed in the United States consecutive film frames always result in sets of un- equal numbers of fields on the record carrier. Pre- ferably an indication signal is added to each set of fields on the record carrier. The read apparatus comprises detection means for detecting said indi- cation signal. This signal is used to ensure that in the still picture mode, during which the same two fields on a track circumference of the record carrier are repeatedly read, two fields are read which belong to the same set and consequently stem from the same film frame, - 34 -

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