JPH0412154U - - Google Patents
Info
- Publication number
- JPH0412154U JPH0412154U JP4816890U JP4816890U JPH0412154U JP H0412154 U JPH0412154 U JP H0412154U JP 4816890 U JP4816890 U JP 4816890U JP 4816890 U JP4816890 U JP 4816890U JP H0412154 U JPH0412154 U JP H0412154U
- Authority
- JP
- Japan
- Prior art keywords
- disk
- photoreflector
- detection device
- level
- output
- 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
- 238000001514 detection method Methods 0.000 claims description 7
Landscapes
- Feeding And Guiding Record Carriers (AREA)
Description
第１図乃至第３図はこの考案に係るデイスク検
出装置を示し、第１図は本考案のデイスク検出装
置を示す斜視図、第２図は同デイスク検出装置を
示すマルチデイスクプレーヤ要部の断面図、第３
図はデイスクの有無と第１、第２のフオトリフレ
クタの出力の関係を示す図表である。
主な符号の説明、１……デイスクトレイ、１ａ
……載置部、１ｂ……載置部、２……ターンテー
ブル、３……プリント基板、４……第１のフオト
リフレクタ、５……第２のフオトリフレクタ、６
……小径デイスク（直径８cmまたは１２cmのＣＤ
）、７……大径デイスク（直径２０cmまたは３０
cmのＬＤ）、８……クランパ、８ａ……クランパ
アーム。
1 to 3 show a disc detection device according to the invention, FIG. 1 is a perspective view showing the disc detection device of the invention, and FIG. 2 is a cross section of the main part of a multi-disc player showing the disc detection device. Figure, 3rd
The figure is a chart showing the relationship between the presence or absence of a disk and the outputs of the first and second photoreflectors. Explanation of main symbols, 1...Disk tray, 1a
... Placement section, 1b ... Placement section, 2 ... Turntable, 3 ... Printed circuit board, 4 ... First photoreflector, 5 ... Second photoreflector, 6
...Small diameter disc (CD with a diameter of 8cm or 12cm)
), 7...Large diameter disk (diameter 20cm or 30cm)
cm LD), 8... Clamper, 8a... Clamper arm.
Claims (1)
スク装置のデイスク検出装置において、 デイスク装着位置の上方に発光素子と受光素子
を備えた第１のフオトリフレクタをデイスクの内
径部に設け、その外側に第２のフオトリフレクタ
を設けて、この２個のフオトリフレクタの出力に
よりデイスクサイズを検出するように構成したこ
とを特徴とするデイスク検出装置。 ２ 第１のフオトリフレクタの出力がＨレベルで
第２のフオトリフレクタの出力がＬレベルのとき
デイスク片面の記録または再生のみを行うように
構成したことを特徴とする請求項１記載のデイス
ク検出装置。[Claims for Utility Model Registration] 1. In a disk detection device for a multi-disk device that records or plays back disks, a first photoreflector equipped with a light emitting element and a light receiving element is provided above the disk mounting position on the inner diameter of the disk. What is claimed is: 1. A disk detection device comprising: a second photoreflector provided outside the second photoreflector; and a disk size detected by the outputs of the two photoreflectors. 2. The disk detection device according to claim 1, wherein the disk detection device is configured to perform recording or reproduction only on one side of the disk when the output of the first photoreflector is at H level and the output of the second photoreflector is at L level. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4816890U JPH0412154U (en) | 1990-05-10 | 1990-05-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4816890U JPH0412154U (en) | 1990-05-10 | 1990-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0412154U true JPH0412154U (en) | 1992-01-31 |
Family
ID=31564739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4816890U Pending JPH0412154U (en) | 1990-05-10 | 1990-05-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0412154U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6358659A (en) * | 1986-08-29 | 1988-03-14 | Brother Ind Ltd | Method for detecting disk size of disk player |
| JPH01124156A (en) * | 1987-11-06 | 1989-05-17 | Sanyo Electric Co Ltd | Optical disk player |
-
1990
- 1990-05-10 JP JP4816890U patent/JPH0412154U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6358659A (en) * | 1986-08-29 | 1988-03-14 | Brother Ind Ltd | Method for detecting disk size of disk player |
| JPH01124156A (en) * | 1987-11-06 | 1989-05-17 | Sanyo Electric Co Ltd | Optical disk player |
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