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发明授权
US07054239B1 Recording medium, information recording device, and information reproducing device 失效
记录介质，信息记录装置和信息再现装置

Recording medium, information recording device, and information reproducing device
摘要：
An information recording medium comprises a read-out track having a data region forming data bits for reproduced data and a servo pattern region forming servo bits for tracking control. The servo bits have a first groove that is deep in a direction perpendicular to both a length of the read-out track and a depth of the information recording medium, and a second groove that is deep in a direction opposite to the first groove and having a depth gradually increasing along the read-out track.
摘要（中）：

信息记录介质包括具有形成用于再现数据的数据位的数据区域和形成用于跟踪控制的伺服位的伺服模式区域的读出磁道。 伺服位具有在垂直于读出轨迹的长度和信息记录介质的深度的方向上深的第一凹槽和与第一凹槽相反的方向深的第二凹槽，并且具有 沿着朗读轨迹逐渐增加。

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