JPS5927677U

JPS5927677U - Video signal recording and playback device

Info

Publication number: JPS5927677U
Application number: JP12292282U
Authority: JP
Inventors: 鶴田　雅彦
Original assignee: 日本ビクター株式会社
Priority date: 1982-08-13
Filing date: 1982-08-13
Publication date: 1984-02-21

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来装置のヘッド配置関係の一例を示す図、第
２図は本考案装置のヘッド配置関係の一実施例を示す図
、第３図は本考案装置のヘッド走　　　　“査軌跡の一
例を示す図、第４図は本考案装置の一実施例を示すブロ
ック系統図、第５図は第４図図示装置の各スイッチの開
閉成動作を説明するタイムチャート、第６図は本考案装
置により記録形成されたテープパターンの一例を示す図
である。１．４・・・ヘッド取付用回転体、２．５・・・磁気テ
ープ、１３・・・被周波数変調輝度信号入力端子、１４
・・・低域変換搬送色信号入力端子、１６・・・記録ア
ンプ、１７〜２０・・・再生アンプ、Ａ、　Ｂ、　Ｃ。Ｄ・・・ビデオヘッド、５ａ１１．Ｓａ□２，５ｂ１１
．Ｓｂ１□。Ｓｃ１□、　５ｃｍ２．　Ｓｄ□１．　Ｓｄ□２・・・
ビデオヘッド記録動作用スイッチ、Ｓａ、　Ｓｂ２．　
Ｓｃ２．５ｄ２−ビデオヘッド再生動作用スイッチ、Ｓ
３・・・再生出力選択用スイッチ。Fig. 1 is a diagram showing an example of the head arrangement of the conventional device, Fig. 2 is a diagram showing an example of the head arrangement of the device of the present invention, and Fig. 3 is an example of the head scanning trajectory of the device of the present invention. 4 is a block system diagram showing one embodiment of the device of the present invention, FIG. 5 is a time chart explaining the opening/closing operation of each switch of the device shown in FIG. 4, and FIG. 6 is a diagram of the device of the present invention. 1.4... Rotating body for head attachment, 2.5... Magnetic tape, 13... Frequency modulated luminance signal input terminal, 14.
...Low frequency conversion carrier color signal input terminal, 16...Recording amplifier, 17-20...Reproducing amplifier, A, B, C. D...Video head, 5a11. Sa□2,5b11
．． Sb1□. Sc1□, 5cm2. Sd□1. Sd□2...
Video head recording operation switch, Sa, Sb2.
Sc2.5d2-video head playback operation switch, S
3...Switch for playback output selection.

Claims

[Scope of utility model registration request]

Four recording and reproducing heads 1 are installed at equal angular intervals of 90° on a rotary body whose diameter is smaller than that of the head mounting rotary body of a two-head heli force scanning type recording and reproducing device. A video signal is supplied cyclically to the rotating body.
A first switch group for sequentially recording video signals on tracks inclined with respect to the longitudinal direction of the magnetic tape wound over an angular range greater than 80 degrees, and the four recording/reproducing heads. A second recording/reproducing head which operates as a reproducing head (scans) on the magnetic tape after the recording/reproducing head (-) which is currently recording and forming a track on the magnetic tape; The recording and reproducing head is operated as a reproducing head by switching the transmission path of the reproduced video signal of the four recording and reproducing heads every one track scanning period and using the second switch group. A video signal recording and reproducing device comprising a switch for selectively outputting a reproduced video signal extracted from a video signal.