JPS6478475A - Optical disk accessing method - Google Patents

Optical disk accessing method

Info

Publication number
JPS6478475A
JPS6478475A JP23645787A JP23645787A JPS6478475A JP S6478475 A JPS6478475 A JP S6478475A JP 23645787 A JP23645787 A JP 23645787A JP 23645787 A JP23645787 A JP 23645787A JP S6478475 A JPS6478475 A JP S6478475A
Authority
JP
Japan
Prior art keywords
optical disk
speed detected
accessing method
servo
speed
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
JP23645787A
Other languages
Japanese (ja)
Inventor
Shigeru Kogure
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP23645787A priority Critical patent/JPS6478475A/en
Publication of JPS6478475A publication Critical patent/JPS6478475A/en
Pending legal-status Critical Current

Links

Landscapes

  • Moving Of Head For Track Selection And Changing (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Abstract

PURPOSE:To attain an expensive, high-speeded, and highly accurate access by constituting a seek servo with a step 1, a step 2, and a step 3, and sending a beam spot in the order step 1-3 then pull-in. CONSTITUTION:The seek servo is divided in three steps 1, 2, 3, and the following are employed: a speed detected by a 16-track counter 6, a speed detected by means of a push-pull signal 13, a track address reproduction 20, and a judgement on switching. As a result, an average access time 100msec or below can be attained even with an optical disk of sampled servo type. This speed is sufficient for a device to be used for computer.data.memory.
JP23645787A 1987-09-21 1987-09-21 Optical disk accessing method Pending JPS6478475A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23645787A JPS6478475A (en) 1987-09-21 1987-09-21 Optical disk accessing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23645787A JPS6478475A (en) 1987-09-21 1987-09-21 Optical disk accessing method

Publications (1)

Publication Number Publication Date
JPS6478475A true JPS6478475A (en) 1989-03-23

Family

ID=17001030

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23645787A Pending JPS6478475A (en) 1987-09-21 1987-09-21 Optical disk accessing method

Country Status (1)

Country Link
JP (1) JPS6478475A (en)

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