发明名称 |
Record carrier having an improved modulated servo track for more reliable synchronization and an apparatus for scanning the record carrier |
摘要 |
A record carrier ( 1 ) has a servo track ( 4 ) indicating an information track ( 9 ) intended for recording information blocks represented by marks. The servo track ( 4 ) has a periodic variation of a physical parameter at a predetermined frequency and modulated parts for encoding position information at regular intervals. The modulated parts start with a bit sync element and are of a data type having a data bit element or of a word sync type having a word sync element. The bit sync element and the data bit element are modulated according to a same predetermined type of modulation of the periodic variation. The modulated parts further include modulated parts ( 40, 41 ) of an isolated bit sync type only having the bit sync element.
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申请公布号 |
US7046596(B2) |
申请公布日期 |
2006.05.16 |
申请号 |
US20020276197 |
申请日期 |
2002.11.12 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
SCHEP CORNELIS MARINUS;STEK AALBERT;VAN HOUTEN HENDRIK |
分类号 |
G11B11/00;G11B20/10;G11B7/00;G11B7/007;G11B7/24;G11B7/24082;G11B20/12;G11B27/19;G11B27/24;G11B27/30 |
主分类号 |
G11B11/00 |
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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