发明名称 |
RECORD-CARRIER BODY |
摘要 |
A record carrier body is described, provided with sector addresses (12) and servo-track portions (13). As the maximum width of the servo-track portions is at least 60% of the track period (Pr), in a direction transverse to the track direction, and is at least of the order of twice the maximum width of the sector-address areas (15), it is possible to obtain an improved tracking signal in addition to a satisfactory address signal. An improved information signal can be obtained by recording the information (22) in the lands between the servo tracks. |
申请公布号 |
AU584662(B2) |
申请公布日期 |
1989.06.01 |
申请号 |
AU19860052484 |
申请日期 |
1986.01.20 |
申请人 |
PHILIPS' GLOEILAMPENFABRIEKEN, N.V. |
发明人 |
JOHANNES HERMANUS THEODORUS PASMAN;NICOLAAS CORNELIS JOSEPHUS ANTONIUS VAN HIJNINGEN |
分类号 |
G11B7/00;G11B7/0045;G11B7/007;G11B7/08;G11B7/09;G11B7/12;G11B7/24;G11B7/26;G11B23/00;(IPC1-7):G11B27/32 |
主分类号 |
G11B7/00 |
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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