JPS60155037U - magnetic recording and reproducing device - Google Patents

magnetic recording and reproducing device

Info

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
Application number
JP4189484U
Other languages
Japanese (ja)
Inventor
秀雄 高橋
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 JP4189484U priority Critical patent/JPS60155037U/en
Publication of JPS60155037U publication Critical patent/JPS60155037U/en
Pending legal-status Critical Current

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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 the drawing]

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)

【実用新案登録請求の範囲】[Scope of utility model registration request] 電動機の回転位相と記録時には同期信号を再生時にはテ
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.
JP4189484U 1984-03-23 1984-03-23 magnetic recording and reproducing device Pending JPS60155037U (en)

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)

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