发明名称 |
MULTILAYER OPTICAL DISC HAVING WOBBLE PITS. |
摘要 |
<p>A record carrier for recording information by writing marks in a track has a recording layer with a pregroove (51). The pregroove has a wobble that has wobble modulation (52) for representing control information. The pregroove further has a pregroove modulation constituted by pregroove pit areas (54) having a predefined width and depth alternating with pregroove land areas (53) having a reduced depth and/or width, in particular zero depth. A majority of the pregroove land areas (53) is located at zero crossings of the wobble and a majority of the pregroove pit areas is located at peak values of the wobble for optimizing the wobble signal strength. A scanning device has wobble detection means for retrieving the control information from the wobble modulation, and pregroove demodulation means for retrieving the recording control information from the pregroove modulation.</p> |
申请公布号 |
MXPA05010077(A) |
申请公布日期 |
2005.11.23 |
申请号 |
MX2005PA10077 |
申请日期 |
2004.03.09 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
JOHANNES H. M. SPRUIT |
分类号 |
G11B7/007;G11B7/013;G11B7/24038;G11B7/24082;G11B7/24085;G11B27/19;G11B27/24;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/007 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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