JPS6439639A - Optical disk recording and reproducing device - Google Patents

Optical disk recording and reproducing device

Info

Publication number
JPS6439639A
JPS6439639A JP19471887A JP19471887A JPS6439639A JP S6439639 A JPS6439639 A JP S6439639A JP 19471887 A JP19471887 A JP 19471887A JP 19471887 A JP19471887 A JP 19471887A JP S6439639 A JPS6439639 A JP S6439639A
Authority
JP
Japan
Prior art keywords
output
linear motor
optical
counter
position signal
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
JP19471887A
Other languages
Japanese (ja)
Inventor
Yasuaki Edahiro
Noboru Kikuchi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP19471887A priority Critical patent/JPS6439639A/en
Publication of JPS6439639A publication Critical patent/JPS6439639A/en
Pending legal-status Critical Current

Links

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To obtain the high gain of a linear motor servo by adding the output of a counter controlled by the output of a window comparator with the radial direction position signal of an optical beam as an input to a linear motor target position. CONSTITUTION:The reflected light of an optical beam 2 from an optical disk 1 is made incident on an optical head 4 and the position signal in a radial direction of the beam 2 is detected. The position signal is inputted to a tracking servo circuit 7, executes a track servo, is inputted to a window comparator 8 and the dislocation of an optical axis is detected. A counter in which an up-and-down are controlled by the output of the comparator 8 executes a counting by the clock of the output of a clock generator 10 and the output of the counter 9 is added to the output of a target value generator 11. A linear motor 5 moves the optical head 4 with the output of a D/A converter 13 as the target value and the correction of the optical axis is executed. Thus, the interference of a tracking servo system and a linear motor system is eliminated and a stable control can be executed.
JP19471887A 1987-08-04 1987-08-04 Optical disk recording and reproducing device Pending JPS6439639A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19471887A JPS6439639A (en) 1987-08-04 1987-08-04 Optical disk recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19471887A JPS6439639A (en) 1987-08-04 1987-08-04 Optical disk recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS6439639A true JPS6439639A (en) 1989-02-09

Family

ID=16329091

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19471887A Pending JPS6439639A (en) 1987-08-04 1987-08-04 Optical disk recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS6439639A (en)

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