VIDEO SIGNAL RECORDER

PURPOSE:To record with two heads alternately, and to attain small-sized, by holding a diameter of a rotary drum of two-head helical scanning system or a rotary plate, in a specified relation with the diameter of a rotary drum of the conventional system. CONSTITUTION:Video heads H3, H4 having a gap w...

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Bibliographic Details
Main Author OOTA YOSHIHIKO
Format Patent
LanguageEnglish
Published 16.06.1983
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary:PURPOSE:To record with two heads alternately, and to attain small-sized, by holding a diameter of a rotary drum of two-head helical scanning system or a rotary plate, in a specified relation with the diameter of a rotary drum of the conventional system. CONSTITUTION:Video heads H3, H4 having a gap with different azimuth angle are fitted to a rotary drum 12 closely with a prescribed interval. A magnetic tape 1 is wound on the drum 12 over about 300 deg. with poles 3, 4 and 13-15. The relation of D2 180/alphaXD1 is obtained, where D2 is a diameter of the drum 12, alpha is an effective winding angle of the tape 1, and D1 is a diameter of the conventional two-head type helical system. The picture information having the horizontal scanning period numbers equal to the horizontal period numbers reproduced from one track and a vertical synchronizing signal are recorded on the tape 1 having the angle alpha or the vicinity with the heads H3, H4 by taking about 1.5 revolution of the drum 12 as the period, to attain small-sized.
Bibliography:Application Number: JP19810201060