JPS6031709U - Head switching signal generator - Google Patents
Head switching signal generatorInfo
- 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
Links
Landscapes
- 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
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)
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.
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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH044690A (en) * | 1990-04-23 | 1992-01-09 | Rohm Co Ltd | Signal generating circuit |
-
1983
- 1983-08-02 JP JP12116583U patent/JPS6031709U/en active Pending
Cited By (1)
| 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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