JPH0284161U

JPH0284161U -

Info

Publication number: JPH0284161U
Application number: JP16131388U
Authority: JP
Priority date: 1988-12-14
Filing date: 1988-12-14
Publication date: 1990-06-29

Description

[Brief explanation of drawings]

第１図及び第２図はこの考案に係るマルチデイ
スクプレーヤのデイスク検出装置の実施例を示し
、第１図は２組の光センサをトレイの移動方向に
対し前後に装着した検出装置の斜視図、第２図は
２組の光センサをトレイの移方向に対し左右に装
着し、更にシヤツタによる検出回路を用いた他の
実施例の斜視図である。第３図及び第４図は従来
例を示し、第３図は１組の光センサと最も一般的
なトレイを用いた検出装置の斜視図、第４図は他
の形状のトレイを用いた他の従来例の斜視図であ
る。主な符号の説明、１〜４，１１，１２：透過型
光センサ、５：マルチデイスクカートリツジ、６
，９：トレイ、７，１０：トレイの開口部、８：
引き出しアーム、１３：シヤツタ。 1 and 2 show an embodiment of the disc detection device for a multi-disk player according to this invention, and FIG. 1 is a perspective view of the detection device in which two sets of optical sensors are mounted in front and rear with respect to the moving direction of the tray. FIG. 2 is a perspective view of another embodiment in which two sets of optical sensors are mounted on the left and right sides with respect to the tray movement direction, and a shutter-based detection circuit is also used. Figures 3 and 4 show conventional examples, Figure 3 is a perspective view of a detection device using a set of optical sensors and the most common tray, and Figure 4 is a detection device using a tray of other shapes. FIG. 2 is a perspective view of a conventional example. Explanation of main symbols, 1 to 4, 11, 12: Transmissive optical sensor, 5: Multi-disk cartridge, 6
, 9: Tray, 7, 10: Tray opening, 8:
Drawer arm, 13: Shutter.

Claims

[Scope of Claim for Utility Model Registration] 1. In a disk loading mechanism that pulls out a tray carrying a disk from a cart containing a plurality of trays and attaches the disk to a disk rotating device, a plurality of optical sensors are installed in the direction of movement of the tray. 1. A disc detection device for a multi-disc player, comprising a detection circuit for detecting the presence or absence of a disc mounted on the tray and the size of the disc while the tray is being pulled out and moved. 2. A plurality of optical sensors are provided in the direction of movement of the tray, and while the tray is pulled out and moved, it is possible to detect the presence or absence of the tray, the shape (type) of the tray, and the presence or absence of a disk mounted on the tray regardless of the shape of the tray. ,
2. The disc detection device for a multi-disc player according to claim 1, further comprising a detection circuit for detecting the size of the disc.