JPS5641561A - Tracking control unit - Google Patents

Tracking control unit

Info

Publication number
JPS5641561A
JPS5641561A JP11640579A JP11640579A JPS5641561A JP S5641561 A JPS5641561 A JP S5641561A JP 11640579 A JP11640579 A JP 11640579A JP 11640579 A JP11640579 A JP 11640579A JP S5641561 A JPS5641561 A JP S5641561A
Authority
JP
Japan
Prior art keywords
signal
scale
generator
generates
lamp wave
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.)
Granted
Application number
JP11640579A
Other languages
Japanese (ja)
Other versions
JPS6143782B2 (en
Inventor
Isao Hoshino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP11640579A priority Critical patent/JPS5641561A/en
Publication of JPS5641561A publication Critical patent/JPS5641561A/en
Publication of JPS6143782B2 publication Critical patent/JPS6143782B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Control Of Position Or Direction (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE: To make it possible to smoothly retrieve the documentary information, by detecting its recording track position in accordance with a signal of the scale signal generator provided on the linear motor.
CONSTITUTION: The scale signal generator 45 provided on the linear motor 30 generates two scale signals of (X+0°) and (X+90°) which are 90° out of phase and inputs them to the signal transducer 46, makes them a saw tooth waveform reference signal of 1/4 pitch, and also it is transmitted to the scale lamp wave generator 47, by which a lamp wave signal is obAtined based upon the reset timing. Also, the radial send signal generator 48 generates a lamp wave signal that is opposite in polarity from the signal from the generator 47 by the voltage change amount corresponding to the moving amount of the motor per track. The compound amplifier 49 generates a linear motor control signal by compounding the aforesaid lamp wave signals, it is fed back to the motor 30 through the power amplifier 50, and its position is subject to servo-control and is moved along the track. Thus, the documentary information can be retrieved smoothly.
COPYRIGHT: (C)1981,JPO&Japio
JP11640579A 1979-09-11 1979-09-11 Tracking control unit Granted JPS5641561A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11640579A JPS5641561A (en) 1979-09-11 1979-09-11 Tracking control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11640579A JPS5641561A (en) 1979-09-11 1979-09-11 Tracking control unit

Publications (2)

Publication Number Publication Date
JPS5641561A true JPS5641561A (en) 1981-04-18
JPS6143782B2 JPS6143782B2 (en) 1986-09-30

Family

ID=14686229

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11640579A Granted JPS5641561A (en) 1979-09-11 1979-09-11 Tracking control unit

Country Status (1)

Country Link
JP (1) JPS5641561A (en)

Also Published As

Publication number Publication date
JPS6143782B2 (en) 1986-09-30

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