JPS6031709U - Head switching signal generator - Google Patents

Head switching signal generator

Info

Publication number
JPS6031709U
JPS6031709U JP12116583U JP12116583U JPS6031709U JP S6031709 U JPS6031709 U JP S6031709U JP 12116583 U JP12116583 U JP 12116583U JP 12116583 U JP12116583 U JP 12116583U JP S6031709 U JPS6031709 U JP S6031709U
Authority
JP
Japan
Prior art keywords
switching signal
head switching
preset counter
position detection
pulse generator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP12116583U
Other languages
Japanese (ja)
Inventor
保 青木
Original Assignee
シャープ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Priority to JP12116583U priority Critical patent/JPS6031709U/en
Publication of JPS6031709U publication Critical patent/JPS6031709U/en
Pending legal-status Critical Current

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  • Television Signal Processing For Recording (AREA)

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

【図面の簡単な説明】[Brief explanation of drawings]

第1図は従来一般のVTRの回転ドラムの底面図、第2
図は従来一般のVTRに使用されているヘッド切換信号
発生装置の動作説明のための信号波形図、第3図は本考
案に係るヘッド切換信号発生装置の1実施例の構成図、
第4図は同実施例の動作説明のための信号波形図である
。 1・・・回転ドラム、2.2′・・・ビデオヘッド、3
・・・位置検出パルス発生器、5・・・単安定マルチバ
イブレータ、6・・・クロックパルス発生器、7・・・
アンドゲート、訃・・リセットパルス発生器、9・・・
プリセットカウンタ。
Figure 1 is a bottom view of the rotating drum of a conventional general VTR;
The figure is a signal waveform diagram for explaining the operation of a head switching signal generating device conventionally used in a general VTR, and FIG. 3 is a configuration diagram of one embodiment of the head switching signal generating device according to the present invention.
FIG. 4 is a signal waveform diagram for explaining the operation of the same embodiment. 1...Rotating drum, 2.2'...Video head, 3
... Position detection pulse generator, 5... Monostable multivibrator, 6... Clock pulse generator, 7...
AND gate, death...reset pulse generator, 9...
Preset counter.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 2個のビデオヘッドが互いに180’の間隔を以って取
付けられるとともに1個の位置検出パルス発生器を取付
けられた回転ドラムと、回転ドラムの回転時に前記位置
検出パルス発生器より得られる位置検出信号によりトリ
ガーされ任意の時間遅延した遅延パルスを発生するこ′
とができる単安定マルチパイブレ′−夕と、所定の周波
数のクロスパルスを発生するクロックパルス発生器と、
前記遅延パルスによりリセットされ予め設定された値ま
でのクロックパルスのカウント動作を行なうプリセット
カウンタと、前記クロックパルス発生器とプリセットカ
ウンタとの間に挿入されプリセットカウンタのオーバー
フロ一時にクロックパルスのカウンタへの供給を遮断す
るゲート手段とからなり、前記プリセットカウンタより
ヘッド切換信号を得ることを特徴とするヘッド切換信号
発生装置。
a rotating drum on which two video heads are mounted at a distance of 180' from each other and a position detection pulse generator is attached; and a position detection obtained from the position detection pulse generator during rotation of the rotating drum; Generates a delayed pulse triggered by a signal and delayed by an arbitrary time
a monostable multi-pipe generator that can generate
a preset counter that is reset by the delay pulse and performs a clock pulse counting operation up to a preset value; and a preset counter that is inserted between the clock pulse generator and the preset counter and that counters clock pulses when the preset counter overflows. 1. A head switching signal generating device comprising: gate means for cutting off supply of the head switching signal, and obtaining a head switching signal from the preset counter.
JP12116583U 1983-08-02 1983-08-02 Head switching signal generator Pending JPS6031709U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12116583U JPS6031709U (en) 1983-08-02 1983-08-02 Head switching signal generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12116583U JPS6031709U (en) 1983-08-02 1983-08-02 Head switching signal generator

Publications (1)

Publication Number Publication Date
JPS6031709U true JPS6031709U (en) 1985-03-04

Family

ID=30277419

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12116583U Pending JPS6031709U (en) 1983-08-02 1983-08-02 Head switching signal generator

Country Status (1)

Country Link
JP (1) JPS6031709U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH044690A (en) * 1990-04-23 1992-01-09 Rohm Co Ltd Signal generating circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH044690A (en) * 1990-04-23 1992-01-09 Rohm Co Ltd Signal generating circuit

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