-
1.
公开(公告)号:US20110299371A1
公开(公告)日:2011-12-08
申请号:US13202434
申请日:2010-12-17
申请人: Tsuyoshi Nakasendo , Masaru Yamaoka , Yuji Takagi , Makoto Usui
发明人: Tsuyoshi Nakasendo , Masaru Yamaoka , Yuji Takagi , Makoto Usui
CPC分类号: G11B20/10009 , G11B7/0045 , G11B7/00736 , G11B19/26 , G11B20/00086 , G11B20/00115 , G11B20/00594 , G11B20/10027 , G11B20/1024 , G11B2220/2541 , G11B2220/2562
摘要: To provide an optical disk device, an optical disk control method and an integrated circuit, which are capable of writing a recordable mark by changing the reflectance ratio of a reflective film formed on concave-convex pits without using an industrial special device or a high-power laser light source. A data reproduction controller (103) sets a first rotation speed in a disk rotation speed switching unit (108) and a first laser power in a laser power switching unit (107) when reproducing the concave-convex pits. When writing the recordable mark, a mark recording controller (104) sets in the disk rotation speed switching unit (108) a second rotation speed that is slower than the first rotation speed and the lowest rotation speed at which the concave-convex pits can be reproduced, and sets a second laser power greater than the first laser power in the laser power switching unit (107) in accordance with the emission timing.
摘要翻译: 为了提供一种光盘装置,光盘控制方法和集成电路,其能够通过改变形成在凹凸坑上的反射膜的反射率而写入可记录标记,而不使用工业专用装置或高速数据, 功率激光光源。 数据再现控制器(103)在再现凹凸坑时,在盘旋转速度切换单元(108)中设置第一旋转速度和激光功率切换单元(107)中的第一激光功率。 当写入可记录标记时,标记记录控制器(104)在盘转速切换单元(108)中设置比第一转速慢的凹部凹坑的最低转速和第二转速 根据发射定时,在激光功率切换单元(107)中再现并设定大于第一激光功率的第二激光功率。