发明名称 |
Evaluation disc |
摘要 |
<p>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.</p> |
申请公布号 |
EP1622150(A2) |
申请公布日期 |
2006.02.01 |
申请号 |
EP20050016330 |
申请日期 |
2005.07.27 |
申请人 |
FUNAI ELECTRIC CO., LTD. |
发明人 |
SOGAWA, TERUAKI;YOSHIOKA, JOJI;INOUE, KATSUICHI |
分类号 |
G11B27/34;G11B7/007;G11B7/22;G11B20/10 |
主分类号 |
G11B27/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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