Variable-speed regeneration compensating apparatus for double az

Details Variable-speed regeneration compensating apparatus for double az Variable-speed regeneration compensating apparatus for double az

1991-08-28

1994-06-07

Pascal, Robert J.

Dynamic magnetic information storage or retrieval

Record editing

360 102, 360 103, 358312, H04N 578

Patent

active

053194993

ABSTRACT:
A variable-speed regeneration compensating apparatus for a double azimuth 4-head type video tape recorder comprises first and second standard speed regenerating heads, first and second low speed regenerating heads, a standard speed regeneration head switching part, a standard speed regeneration envelope detecting part, a low speed regeneration envelope detecting part, an envelope comparing part, a standard speed recorded medium regeneration signal switching part, first and second time constant circuits, a time constant circuit switching part, and a low speed recorded medium variable speed regeneration compensating circuit. Compensation is provided not only to the case where the picture data having undergone a standard speed recording which is subjected to variable speed reproduction, but also to the medium having undergone a low speed recording, and therefore the stripe shaped optical noise is eliminated making the low speed recording/regenerating of video tapes easier.

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