发明名称 |
Information carrier and devices for scanning the information carrier |
摘要 |
The invention relates to a predetermined synchronization pattern (40), a so-called VFO field, in, for example, the headers 3 of an information carrier. The proposed predetermined synchronization pattern (40) consists of sequences of 3T marks and spaces (41), of 8T marks and spaces (42) and of 5T marks and spaces (43). This sequence of patterns is advantageous for setting the dynamic range of an Automatic Gain Controlled (AGC) amplifier located within a device reading the information carrier.
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申请公布号 |
US6724707(B2) |
申请公布日期 |
2004.04.20 |
申请号 |
US20010854392 |
申请日期 |
2001.05.11 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
VAN WOUDENBERG ROEL;STEK AALBERT |
分类号 |
G11B20/10;G11B5/09;G11B7/0045;G11B7/005;G11B7/007;G11B7/24;G11B20/12;G11B20/14;G11B27/10;G11B27/24;(IPC1-7):G11B5/09 |
主分类号 |
G11B20/10 |
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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