发明公开
- 专利标题: Evaluation disc
- 专利标题(中): Bewertungsplatte
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申请号: EP05016330.2申请日: 2005-07-27
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公开(公告)号: EP1622150A2公开(公告)日: 2006-02-01
- 发明人: Sogawa, Teruaki , Yoshioka, Joji , Inoue, Katsuichi
- 申请人: Funai Electric Co., Ltd.
- 申请人地址: 7-1, Nakagaito 7-chome Daito-shi, Osaka JP
- 专利权人: Funai Electric Co., Ltd.
- 当前专利权人: Funai Electric Co., Ltd.
- 当前专利权人地址: 7-1, Nakagaito 7-chome Daito-shi, Osaka JP
- 代理机构: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät
- 优先权: JP2004218107 20040727
- 主分类号: G11B27/00
- IPC分类号: G11B27/00 ; G11B7/00
摘要:
An evaluation disc for use in evaluating a pickup head of an optical disc device, including: an inner circular region: an intermediate circular region; and an outer circular region; wherein the outer circular region and the intermediate circular region are formed on the outer side of the inner circular region; the outer circular region is formed on the outer side of the intermediate circular region; each of the inner circular region, the intermediate circular region and the outer circular region being divided in to a CD evaluation region written with CD standard recording information and a DVD evaluation region written with DVD standard recording information.
公开/授权文献
- EP1622150B1 Evaluation disc 公开/授权日:2008-11-05
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