JPS644984A - Optical disk device - Google Patents
Optical disk deviceInfo
- Publication number
- JPS644984A JPS644984A JP16184087A JP16184087A JPS644984A JP S644984 A JPS644984 A JP S644984A JP 16184087 A JP16184087 A JP 16184087A JP 16184087 A JP16184087 A JP 16184087A JP S644984 A JPS644984 A JP S644984A
- Authority
- JP
- Japan
- Prior art keywords
- optical disk
- rotating speed
- disk device
- optical
- destructed
- 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)
- Rotational Drive Of Disk (AREA)
Abstract
PURPOSE:To prevent recorded data from being destructed in a case where an optical disk medium with high sensitivity is used, by providing a function to monitor the position of an optical head for the optical disk device and the rotating speed of the optical disk device for that position. CONSTITUTION:A comparator 12 which compares the output of a photoelectric transducer 6 with that of a speed detector 11 and controls the input line of a carriage control circuit 8 corresponding to a compared result is provided. By reading the code of a slit plate representing the position of the optical head 4, the allowable minimum rotating speed of the optical disk medium corresponding to the position of the optical head is compared with the rotating speed of the optical disk at the present time, and when the rotating speed of the optical disk at the present time is less than that of the allowable minimum rotating speed, the movement of a carriage 7 is inhibited. In such a way, it is possible to prevent the recorded data from being destructed accidentally even when the optical disk medium with high sensitivity is used.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16184087A JPS644984A (en) | 1987-06-29 | 1987-06-29 | Optical disk device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16184087A JPS644984A (en) | 1987-06-29 | 1987-06-29 | Optical disk device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS644984A true JPS644984A (en) | 1989-01-10 |
Family
ID=15742935
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16184087A Pending JPS644984A (en) | 1987-06-29 | 1987-06-29 | Optical disk device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS644984A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2383349A2 (en) | 2006-12-18 | 2011-11-02 | Wako Pure Chemical Industries, Ltd. | Primer and probe for detection of mycobacterium avium and method for detection of mycobacterium avium using the same |
-
1987
- 1987-06-29 JP JP16184087A patent/JPS644984A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2383349A2 (en) | 2006-12-18 | 2011-11-02 | Wako Pure Chemical Industries, Ltd. | Primer and probe for detection of mycobacterium avium and method for detection of mycobacterium avium using the same |
EP2479273A2 (en) | 2006-12-18 | 2012-07-25 | Wako Pure Chemical Industries, Ltd. | Primer and probe for detection of mycobacterium avium and method for detection of mycobacterium avium using the same |
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