JPH0426452U

JPH0426452U -

Info

Publication number: JPH0426452U
Application number: JP6685690U
Authority: JP
Priority date: 1990-06-26
Filing date: 1990-06-26
Publication date: 1992-03-03

Description

[Brief explanation of the drawing]

第１図乃至第３図はこの考案に係る光デイスク
プレーヤのデイスク識別装置の実施例を示し、第
１図ａ，ｂ，ｃは光デイスクと検出器との位置関
係を示す図、第２図は第１の光デイスクの識別を
説明する図、第３図は第２の光デイスクの識別を
説明する図である。第４図は従来の実施例を説明
する図である。主な符号の説明、１……第１の光デイスク、１
ａ……小径の孔、２……第２の光デイスク、２ａ
……大径の孔、３……フオトリフレクタ。 1 to 3 show an embodiment of the disc identification device for an optical disc player according to this invention, FIGS. 1a, b, and c are diagrams showing the positional relationship between the optical disc and the detector, and FIG. 2 3 is a diagram illustrating identification of the first optical disc, and FIG. 3 is a diagram illustrating identification of the second optical disc. FIG. 4 is a diagram illustrating a conventional embodiment. Explanation of main symbols, 1...first optical disk, 1
a...Small diameter hole, 2...Second optical disk, 2a
...Large diameter hole, 3...Photoreflector.

Claims

[Claims for Utility Model Registration] A disc identification device for an optical disc player that identifies a first optical disc having a small diameter hole in the center and a second optical disc having a large diameter hole in the center, A detector for detecting the presence or absence of an optical disk is provided, and this detector is placed outside the small diameter hole of the first optical disk and inside the large diameter hole of the second optical disk. and the presence or absence of the disc and the type of the disc are configured to be able to be identified based on the detection pattern of the detector obtained when the first optical disc or the second optical disc is pulled into a predetermined position by the tray. A disc identification device for an optical disc player.