- 专利标题： Optical disc with wobbled tracks and apparatus using this optical disc
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申请号： US11689613申请日： 2007-03-22
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公开(公告)号： US07408871B2公开(公告)日： 2008-08-05
- 发明人: Yuji Nagai , Chosaku Noda , Akihito Ogawa , Kazuto Kuroda
- 申请人： Yuji Nagai , Chosaku Noda , Akihito Ogawa , Kazuto Kuroda
- 申请人地址： JP Tokyo
- 专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人地址： JP Tokyo
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- 优先权： JP2003-015019 20030123
- 主分类号： G11B7/24
- IPC分类号： G11B7/24 ; G11B5/09
摘要：
Address information is formed by M wobbles (integer M is the number of wobble waves) per bit as a basic unit, and is NRZ-recorded. Also, a sync signal used in sync detection of the address information is formed by N wobbles per bit as a basic unit (integer N is the number of wobble waves and M=2N). The sync signal with such configuration (6 wobbles per bit) is recorded on the head side of the address information (12 wobbles per bit). In this way, even when external noise is large, a modulated wobble signal can be demodulated more accurately.
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