发明授权
- 专利标题: Optical discs with controllable access times and method of the same
- 专利标题(中): 具有可控访问时间和方法的光盘
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申请号: US10806123申请日: 2004-03-23
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公开(公告)号: US07383585B2公开(公告)日: 2008-06-03
- 发明人: Guo-Zua Wu , Zu-Wen Chao , Yi-Jung Wang , Nai-Heng Tseng , Shu-Ching Chen
- 申请人: Guo-Zua Wu , Zu-Wen Chao , Yi-Jung Wang , Nai-Heng Tseng , Shu-Ching Chen
- 申请人地址: TW Hsinchu
- 专利权人: Industrial Technology Research Institute
- 当前专利权人: Industrial Technology Research Institute
- 当前专利权人地址: TW Hsinchu
- 代理机构: Birch, Stewart, Kolasch & Birch, LLP
- 优先权: TW92130802A 20031104
- 主分类号: H04L9/00
- IPC分类号: H04L9/00
摘要:
A method controls the access times of an optical disc end discs of the same. The method includes the following steps. First, an optical disc drive obtains the addresses of a life flag and a medium key block (MKB) by reading a private flag of an optical disc. The life flag and the MKB are used to control the access times of the optical disc. After confirming the addresses of the life flag and the MKB, the optical disc drive obtains an optical power signal to determine the power that should be used to read the MKB. When the optical disc drive uses the appropriate reading power to access the MKB, the recognizable number of access times in the 4KB data is reduced, and the medium key signal is extracted to be confirmed if it is recognizable to restate the main data.
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