Recording and/or playback apparatus which prevents erasure of th

Details Recording and/or playback apparatus which prevents erasure of th Recording and/or playback apparatus which prevents erasure of th

1975-07-15

1977-01-25

Konick, Bernard

Dynamic magnetic information storage or retrieval

General recording or reproducing

Recording-or erasing-prevention

360 66, G11B 1504

Patent

active

040054810

ABSTRACT:
The invention relates to a recording and/or playback apparatus for video signals, equipped with a rotary head system with at least one recording and/or playback head and at least one erase head for the trackwise erasing of a video signal recorded in the video tracks, which tracks cross a further track, specifically a synchronization track, the erase signal being applied to the rotating erase head via a time-controlled gate circuit, which interrupts the path of the erase signal to the erase head while said head scans the further track, thus preventing a signal recorded in the further track from being erased.

REFERENCES:
patent: 3084215 (1963-04-01), Bounsall
patent: 3342949 (1967-09-01), Wessels
patent: 3504116 (1970-03-01), Sato

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