发明授权
- 专利标题： Optical disk and optical disk apparatus using spatially separated grooves and lands for recording tracks
- 专利标题（中）： 光盘和光盘装置使用空间分离的凹槽和焊盘来记录轨道
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申请号： US09561856申请日： 2000-04-28
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公开(公告)号： US06967917B1公开(公告)日： 2005-11-22
- 发明人: Tomiyuki Numata , Shigemi Maeda
- 申请人： Tomiyuki Numata , Shigemi Maeda
- 申请人地址： JP Osaka
- 专利权人： Sharp Kabushiki Kaisha
- 当前专利权人： Sharp Kabushiki Kaisha
- 当前专利权人地址： JP Osaka
- 代理机构： Edwards & Angell, LLP
- 代理商 David G. Conlin; George W. Hartnell, III
- 优先权： JP11-121105 19990428
- 主分类号： G11B7/007
- IPC分类号： G11B7/007 ; G11B20/12 ; G11B20/18 ; G11B5/58
摘要：
An optical disk using both grooves and lands as a recording track is provided with {circle around (1)} a data area for recording/reproducing data and {circle around (2)} DMAs (Data Management Areas) for managing a defective sector in the data area. The DMAs include four DMAs A–D all formed on the lands. The DMA B(D) is formed behind the ending sector of the DMA A(C). This arrangement realizes a DMA format having high resistance to defects and improving a processing rate. Consequently, highly reliable optical disk and optical disk apparatus can be provided.