JPS60155037U - magnetic recording and reproducing device - Google Patents
magnetic recording and reproducing deviceInfo
- Publication number
- JPS60155037U JPS60155037U JP4189484U JP4189484U JPS60155037U JP S60155037 U JPS60155037 U JP S60155037U JP 4189484 U JP4189484 U JP 4189484U JP 4189484 U JP4189484 U JP 4189484U JP S60155037 U JPS60155037 U JP S60155037U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- motor
- control signal
- control
- phase
- 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
- Motor And Converter Starters (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図は従来の磁気記録再生装置のヘッドモーターサー
ボ系のブロック図、第２図は本考案の磁 □気記録
再生装置の一実施例を示すブロック図である。
１−・・定速制御装置、２・・・回転位相制御装置、３
・・・電動機、７・・・定速制御回路、１６・・・直流
増幅器、１７・・・制御電圧検出回路。FIG. 1 is a block diagram of a head motor servo system of a conventional magnetic recording/reproducing apparatus, and FIG. 2 is a block diagram showing an embodiment of the magnetic recording/reproducing apparatus of the present invention. 1 - Constant speed control device, 2... Rotation phase control device, 3
. . . Electric motor, 7. Constant speed control circuit, 16. DC amplifier, 17. Control voltage detection circuit.
Claims (1)
ープ上のコントロール信号の位相とを比較し、その位相
差により形成する回転位相制御信号と、電動機に備えた
発電機の出力電圧と基準速度電圧とを比較しその電圧差
により形成する定速回転制御信号とを重畳し、定速制御
回路に加える、ことにより電動機の回転速度を制御する
ヘッドモーターサーボ系において、前記重畳された両制
御゛信号を検出し回転位相制御信号の直流増幅器の増幅
度を可変する制御電圧検出回路を設け１．電動機の立ち
上がり時に制御用部ｉ電圧を強（印加することを特徴と
する磁気記録再生装置。The rotational phase of the motor is compared with the synchronization signal during recording and the phase of the control signal on the tape during playback, and the rotational phase control signal formed by the phase difference, the output voltage of the generator installed in the motor, and the reference speed voltage are compared. The two superimposed control signals are used in a head motor servo system that controls the rotational speed of the electric motor by comparing the voltage difference between the voltages and the constant speed rotation control signal formed by the voltage difference and adding it to the constant speed control circuit. A control voltage detection circuit is provided to detect and vary the amplification degree of the DC amplifier of the rotational phase control signal.1. A magnetic recording/reproducing device characterized in that a strong control part i voltage is applied when a motor starts up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4189484U JPS60155037U (en) | 1984-03-23 | 1984-03-23 | magnetic recording and reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4189484U JPS60155037U (en) | 1984-03-23 | 1984-03-23 | magnetic recording and reproducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60155037U true JPS60155037U (en) | 1985-10-16 |
Family
ID=30552138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4189484U Pending JPS60155037U (en) | 1984-03-23 | 1984-03-23 | magnetic recording and reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60155037U (en) |
-
1984
- 1984-03-23 JP JP4189484U patent/JPS60155037U/en active Pending
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