发明名称 |
RECORD CARRIER AND APPARATUS FOR SCANNING THE RECORD CARRIER |
摘要 |
A record carrier (1) is described which has a servo track (4) indicating an information track (9) intended for recording information blocks, which servo track (4) has a variation of a physical parameter, a so called wobble. The wobble is modulated for encoding record carrier information, such as addresses. The servo track is subdivided in modulated parts in which the frequency and/or phase of the variation deviates from the wobble frequency, and non-modulated parts. The slope of the wobble is substantially continuous at transitions between the modulated and non-modulated parts by using wobbles (25,26,27,28) starting at the maxima or minima of the wobble in the first part of the modulated parts. |
申请公布号 |
EA005639(B1) |
申请公布日期 |
2005.04.28 |
申请号 |
EA20040000133 |
申请日期 |
2002.06.27 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
SCHEP, KORNELIS, M.;STEK, AALBERT;EGNER, SEBASTIAN;BAGGEN, CONSTANT, P., M., J. |
分类号 |
G11B20/14;G11B7/00;G11B7/007;G11B7/24082;G11B27/19;G11B27/24;G11B27/30 |
主分类号 |
G11B20/14 |
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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