Dynamic magnetic information storage or retrieval – Monitoring or testing the progress of recording
Patent
1978-07-14
1980-05-13
Konick, Bernard
Dynamic magnetic information storage or retrieval
Monitoring or testing the progress of recording
360 64, 358172, 358150, H04N 578
Patent
active
042031389
ABSTRACT:
A video recording system for use in recording video information with a helical scan recorder coupled to a portable camera includes a delayed vertical sync generator receiving video information including normal vertical and horizontal synchronization signals from the camera. The delayed sync generator delays vertical synchronization signals with respect to the start of each vertical banking interval such that the head switching point of the helical scanning tape recording apparatus occurs during the vertical blanking interval before the delayed synchronization signals. This eliminates line distortion which otherwise occurs during the video signal information of each scanning frame of the video signal and places it in the vertical blanking interval where it is not displayed as a line distortion in the reproduced video signal on a television screen.
REFERENCES:
patent: 3488433 (1970-01-01), Iwai
patent: 3798364 (1974-03-01), Hayashi
patent: 3845326 (1974-10-01), Godden
patent: 3995112 (1976-11-01), Owen
patent: 4120007 (1978-10-01), Sato
patent: 4121242 (1978-10-01), Janko
Faber Alan
Konick Bernard
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