发明名称 |
PEMBAWA REKAMAN DAN PERANGKAT UNTUK MENSCANNING PEMBAWA REKAMANNYA |
摘要 |
A record carrier (1) is described comprising a servo track (4) indicating an information track (9) intended for recording information blocks represented by marks having lengths expressed in channel bits, which servo track (4) has a periodic variation of a physical parameter. The periodic variation is modulated for encoding record carrier information, such as addresses. The modulation is a bi-phase modulation in which a data bit of the record carrier information is encoded by a first predetermined number of variations of a first phase followed by the same number of variations of a second phase inverse to the first phase. A recording and/or playback device has a demodulator for retrieving data bits of the record carrier information from a first predetermined number of variations of a first phase followed by the same number of variations of a second phase inverse to the first phase. |
申请公布号 |
ID26570(A) |
申请公布日期 |
2001.01.18 |
申请号 |
ID20000001908 |
申请日期 |
2000.01.11 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
JOHANNES J. L. M. VAN VLERKEN;JOHANNES HENDRIKUS MARIA SPRUIT;RONALD REIDERT DRENTEN;JAKOB GERRIT NIJBOER;PAULUS GIJSBERTUS PETRUS WEYENBERGH |
分类号 |
G11B7/007;G11B7/24082;G11B20/10;G11B20/12;G11B20/14;G11B27/10;G11B27/19;G11B27/24;G11B27/30 |
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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