- 专利标题： OPTICAL INFORMATION RECORDING MEDIUM, OPTICAL INFORMATION RECORDING METHOD, AND OPTICAL INFORMATION RECORDING APPARATUS
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申请号： US11857785申请日： 2007-09-19
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公开(公告)号： US20080074980A1公开(公告)日： 2008-03-27
- 发明人: Kenji NARUMI , Kenichi Nishiuchi
- 申请人： Kenji NARUMI , Kenichi Nishiuchi
- 专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人： Matsushita Electric Industrial Co., Ltd.
- 优先权： JP2000-277775 20000913
- 主分类号： G11B3/74
- IPC分类号： G11B3/74
摘要：
An information recording medium according to the present invention includes a plurality of recording layers, and a test area for determining a recording power of a laser light for each of the plurality of recording layers, in which a first test area of a first layer and a second test area of a second layer adjacent to the first layer are provided at different radial positions.
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