发明名称 |
OPTICAL RECORDING MEDIUM AND PLAYBACK METHOD FOR THE SAME |
摘要 |
An optical disc or other optical recording medium enables reading barcode-shaped BCA marks in a burst cutting area (BCA) with tracking on while making tampering with the BCA marks difficult. The optical disc (100) has a first area (102) containing tracks at a first track pitch (d2), and a second area (101) containing tracks at a second track pitch (d1), pre-pits or pre-grooves being formed along the track. The barcode-shaped marks (104) are recorded in the second area, and the second track pitch is equal to or more than five times wider than the first track pitch. |
申请公布号 |
PL371605(A1) |
申请公布日期 |
2005.06.27 |
申请号 |
PL20030371605 |
申请日期 |
2003.02.10 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS NV.;MATSUSHITA ELECTRIC INDUSTRIAL CO,LTD.;SONY CORP. |
发明人 |
ABE SHINYA;TANAKA SHIN-ICHI;OGAWA HIROSHI;HEEMSKERK JACOBUS PETRUS JOSEPHUS;YAMAGAMI TAMOTSU;SCHEP CORNELIS MARINUS |
分类号 |
G11B7/24;G11B7/005;G11B7/007;G11B7/243;G11B20/00;G11B20/12;G11B20/14;G11B23/00;G11B23/28;G11B23/30 |
主分类号 |
G11B7/24 |
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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