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公开(公告)号:US20020089909A1
公开(公告)日:2002-07-11
申请号:US10100599
申请日:2002-03-18
Applicant: U.S. Philips Corporation
Inventor: Gijsbert J. Van Den Enden
IPC: G11B007/005 , G11B007/24
CPC classification number: G11B7/00745 , G11B7/007
Abstract: An optical disc is described for recording data, which disc has a recording area for recording data encoded in optical marks at a recording density. The recording area has circular or spiral tracks provided with a servopattern comprising headers alternating with track portions. The headers contain position information encoded in preformed marks. The track portions comprise periodic characteristics, e.g. a wobble, to synchronise the data writing and reading operations. For reliably detecting the headers the phase of the periodic characteristics comprises a phase jump at a predetermined distance before each header.
Abstract translation: 描述了用于记录数据的光盘,该盘具有用于以记录密度记录以光学标记编码的数据的记录区域。 记录区域具有设置有包括与轨道部分交替的标题的伺服模式的圆形或螺旋形轨道。 标题包含以预制标记编码的位置信息。 轨道部分包括周期特性,例如。 摆动,同步数据写入和读取操作。 为了可靠地检测标题,周期特性的相位包括在每个报头之前预定距离处的相位跳变。
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公开(公告)号:US20020048238A1
公开(公告)日:2002-04-25
申请号:US09945956
申请日:2002-01-09
Applicant: U.S. Philips Corporation
Inventor: Gijsbert J. Van Den Enden , Johannes H.M. Spruit , Johannes J.L.M. Van Vlerken , Ronald R. Drenten
IPC: G11B007/005 , G11B007/24
CPC classification number: G11B7/00745 , G11B7/005 , G11B7/007 , G11B7/013 , G11B7/24082
Abstract: An optical record carrier (1) is provided with tracks having a groove (4) wobbled in a radial direction and predetermined positions (18) along the track. Embossed pits (19) at the predetermined positions represent addressing information. The phase of the wobble near the predetermined positions depends on whether a pit is present (19) on a predetermined position or not (20).
Abstract translation: 光学记录载体(1)设置有具有沿径向摆动的凹槽(4)的轨道和沿着轨道的预定位置(18)。 在预定位置处的浮雕凹坑(19)表示寻址信息。 在预定位置附近摆动的相位取决于是否在预定位置(20)存在凹坑(19)。
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