JPS6478475A - Optical disk accessing method - Google Patents
Optical disk accessing methodInfo
- 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
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.
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) |
-
1987
- 1987-09-21 JP JP23645787A patent/JPS6478475A/en active Pending
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