JPS6164646U - - Google Patents
Info
- Publication number
- JPS6164646U JPS6164646U JP14717884U JP14717884U JPS6164646U JP S6164646 U JPS6164646 U JP S6164646U JP 14717884 U JP14717884 U JP 14717884U JP 14717884 U JP14717884 U JP 14717884U JP S6164646 U JPS6164646 U JP S6164646U
- Authority
- JP
- Japan
- Prior art keywords
- time constant
- output
- signal
- standard mode
- discrimination output
- 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
- 230000003111 delayed effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
Description
第１図は本考案の１実施例を示す回路図、第２
図は従来例を示す回路図、第３図は第２図の各部
の波形図である。
１…第１信号の入力端子、３…遅延回路、４…
積分手段、５…制御信号発生手段、２０…時定数
回路。
Figure 1 is a circuit diagram showing one embodiment of the present invention, Figure 2 is a circuit diagram showing one embodiment of the present invention.
The figure is a circuit diagram showing a conventional example, and FIG. 3 is a waveform diagram of each part of FIG. 2. 1... Input terminal for first signal, 3... Delay circuit, 4...
Integrating means, 5... Control signal generating means, 20... Time constant circuit.
Claims (1)
録がなされた磁気テープを各標準モードを示す判
別出力により再生時のサーボ制御を行うビデオテ
ープレコーダにおいて、 キヤプスタンモータの回転に比例した周波数の
第１の信号を入力して積分する積分手段と、 印加される前記判別出力に応じて前記判別出力
の示す標準モードに対応する時定数が設定され、
該設定された時定数を前記判別出力を示す標準モ
ードのＮ（Ｎは２以上の整数）倍のテープ走行速
度の再生モードに対応する時定数に切換可能なス
イツチ手段を有する時定数回路と、 前記第１信号を入力して前記時定数回路の時定
数に応じた遅延出力を得る遅延回路と、 前記積分手段の出力を前記遅延出力でサンプリ
ングして前記キヤプスタンモータの速度誤差を示
す制御信号を取出す制御信号発生手段とを具備し
たことを特徴とするビデオテープレコーダの速度
制御装置。[Scope of Claim for Utility Model Registration] In a video tape recorder that performs servo control during playback of a magnetic tape recorded in multiple standard modes with different tape running speeds by a discrimination output indicating each standard mode, an integrating means that inputs and integrates a first signal having a frequency proportional to the rotation; and a time constant corresponding to a standard mode indicated by the discrimination output is set in accordance with the applied discrimination output;
a time constant circuit having a switch means capable of switching the set time constant to a time constant corresponding to a playback mode with a tape running speed N (N is an integer of 2 or more) times the standard mode indicating the discrimination output; a delay circuit that receives the first signal and obtains a delayed output according to the time constant of the time constant circuit; and a control that samples the output of the integrating means with the delayed output to indicate a speed error of the capstan motor. 1. A speed control device for a video tape recorder, comprising control signal generating means for extracting a signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14717884U JPS6164646U (en) | 1984-09-28 | 1984-09-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14717884U JPS6164646U (en) | 1984-09-28 | 1984-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6164646U true JPS6164646U (en) | 1986-05-02 |
Family
ID=30705415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14717884U Pending JPS6164646U (en) | 1984-09-28 | 1984-09-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6164646U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61154379A (en) * | 1984-12-27 | 1986-07-14 | Toshiba Corp | High speed reproducing device of video tape recorder |
-
1984
- 1984-09-28 JP JP14717884U patent/JPS6164646U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61154379A (en) * | 1984-12-27 | 1986-07-14 | Toshiba Corp | High speed reproducing device of video tape recorder |
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