Video tape recorder for recording and reproducing high-definitio

Facsimile and static presentation processing – Facsimile – Recording apparatus

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Details

358311, 358343, 360 191, H04N 5782, H04N 979

Patent

active

053174127

ABSTRACT:
In a helical scan type magnetic recording/reproducing apparatus in which a magnetic tape is wound on a rotary cylinder through about 350.degree. for recording/reproducing each of the component color video signals, two magnetic heads in a reverse azimuth relation to each other are provided in a symmetrical relation at 180.degree. on the rotary cylinder having a diameter half that of a conventional rotary cylinder, with the cylinder being adapted to make two rotations during one field period of the color video signal. By selecting input/output timings of four memories at a predetermined rate to be determined by a specific rule, strongly correlated video signal is disposed in the tracks neighboring the track recorded with video signal so as to obtained high reproducing S/N ratio. As a result, magnetic head attachment and positioning for a two channel two segment video tape recorder are simplified at high accuracy, while by the reduction of the rotary cylinder to half the conventional size, the apparatus can be made very compact in size. Furthermore, by employing two magnetic heads for the recording and reproduction of the video signal and audio signal, the apparatus can be used in a plurality of recording and reproducing modes e.g. at the standard mode and long time mode.

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patent: 5138500 (1992-08-01), Haikawa et al.

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