发明名称 |
Combined longitudinal and transversal tracking |
摘要 |
An information storage medium has at least a longitudinal bundle comprising three servo tracks (3, 4, 5). The bundle is arranged in consecutive tracking units (T(N)) of a determined longitudinal length. Surfaces of said servo tracks present either a first or a second characteristic (6, 7) and vary in size and distribution inside the tracking units. The bundles may contain longitudinally stored identification information. Methods for obtaining tracking signals indicating a transversal offset between a reading head and the bundle and for retrieving identification information are disclosed. Also methods for obtaining tracking units in which transversal tracking code is combined with distinct information are described.
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申请公布号 |
US6122134(A) |
申请公布日期 |
2000.09.19 |
申请号 |
US19970990761 |
申请日期 |
1997.12.15 |
申请人 |
DEUTSCHE THOMSON-BRANDT GMBH |
发明人 |
KAADEN, JURGEN;OLDERMANN, KLAUS;MAHR, PETER;REINER, GERHARD;WEIHS, BRUNO |
分类号 |
G11B20/12;G11B21/10;(IPC1-7):G11B5/584 |
主分类号 |
G11B20/12 |
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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