JPS5843673U - Optical disk front/back detection device - Google Patents
Optical disk front/back detection deviceInfo
- Publication number
- JPS5843673U JPS5843673U JP1981136444U JP13644481U JPS5843673U JP S5843673 U JPS5843673 U JP S5843673U JP 1981136444 U JP1981136444 U JP 1981136444U JP 13644481 U JP13644481 U JP 13644481U JP S5843673 U JPS5843673 U JP S5843673U
- Authority
- JP
- Japan
- Prior art keywords
- detection device
- optical disk
- back detection
- disk front
- reflecting surface
- 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
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は光学式ディスクの構造説明図、第２図はこの考
案の一実施例を示す構成説明図、第３図ａ、 ｂ、
ｃはこの考案の他の実施例を示す説明図である。
１５・・・光学式ディスク、２１・・・反射面、２５・
・・光源、２６・・・受光器、２７・・・判別回路。Fig. 1 is an explanatory diagram of the structure of an optical disc, Fig. 2 is an explanatory diagram of the configuration showing an embodiment of this invention, and Figs. 3 a, b,
c is an explanatory diagram showing another embodiment of this invention. 15... Optical disc, 21... Reflective surface, 25.
...Light source, 26... Light receiver, 27... Discrimination circuit.
Claims (1)
ディスクと、前記反射面に光をあてる手段と、該反射面
からの反射光を所定位置で受光できる手段とを具備し、
反射光の有無によってディスクの表裏装着状態を判別す
るようにした光学式ディスクの表裏検出装置。A disk having an inclined outer peripheral end surface and forming a light reflecting surface in this portion, a means for applying light to the reflecting surface, and a means for receiving reflected light from the reflecting surface at a predetermined position,
An optical disc front/back detection device that determines whether a disc is mounted on the front or back based on the presence or absence of reflected light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981136444U JPS5843673U (en) | 1981-09-14 | 1981-09-14 | Optical disk front/back detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981136444U JPS5843673U (en) | 1981-09-14 | 1981-09-14 | Optical disk front/back detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5843673U true JPS5843673U (en) | 1983-03-24 |
Family
ID=29929765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981136444U Pending JPS5843673U (en) | 1981-09-14 | 1981-09-14 | Optical disk front/back detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5843673U (en) |
-
1981
- 1981-09-14 JP JP1981136444U patent/JPS5843673U/en active Pending
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