公开(公告)号：US20120230172A1

公开(公告)日：2012-09-13

申请号：US13412649

申请日：2012-03-06

申请人： Takakiyo YASUKAWA ,  Taku Hoshizawa ,  Kunikazu Ohnishi ,  Yutaka Nagai

发明人： Takakiyo YASUKAWA ,  Taku Hoshizawa ,  Kunikazu Ohnishi ,  Yutaka Nagai

IPC分类号： G11B7/004

CPC分类号： G11B7/00736 ,  G11B7/0053 ,  G11B7/24094 ,  G11B20/00268 ,  G11B20/1217 ,  G11B20/1403 ,  G11B20/1426 ,  G11B2020/122 ,  G11B2220/2541

摘要： In the related art, writing of BCA data has been performed by a BCA cutter or the like after a user data area was formed. However, according to such a method, individual steps cannot help being provided for a disc manufacturing step in order to form the BCA. A burden on the disc manufacturer is large from a viewpoint of the number of disc producing steps and, further, manufacturing costs. By using a bit forming method similar to a user data area, the BCA manufacturing steps can be reduced. Specifically speaking, by devising a pit depth, a pit width, and a pit pattern, a modulation degree of a BCA portion can be further increased. A detecting method similar to that for the BCA in the related art can be applied.

摘要翻译： 在相关技术中，在形成用户数据区之后，通过BCA切割器等进行BCA数据的写入。 然而，根据这种方法，为了形成BCA，单独的步骤不能帮助提供用于盘制造步骤。 从盘片制造步骤的数量和制造成本来看，盘制造商的负担很大。 通过使用类似于用户数据区的位形成方法，可以减少BCA制造步骤。 具体来说，通过设计凹坑深度，凹坑宽度和凹坑图案，可以进一步提高BCA部分的调制度。 可以应用与现有技术中的BCA类似的检测方法。

公开(公告)号：US20120075975A1

公开(公告)日：2012-03-29

申请号：US13198321

申请日：2011-08-04

申请人： Takakiyo YASUKAWA

发明人： Takakiyo YASUKAWA

IPC分类号： G11B7/125

CPC分类号： G11B7/00456

摘要： The invention prevents mark distortion during high-speed recording on an optical disc, thereby improving recording performance. A write pulse signal includes mark periods during which marks 201 are formed and space periods during which no marks are formed. Particular mark periods include a top pulse 101 having first write power Pw; a bias pulse 102 that follows the top pulse 101 and has bias power Pm lower than the first write power Pw; and a last pulse 103 that follows the bias pulse 102 and has second write power Pl lower than the first write power Pw.

摘要翻译： 本发明防止光盘高速记录时的标记失真，从而提高记录性能。 写入脉冲信号包括形成标记201的标记周期和不形成标记的空间周期。 特定的标记周期包括具有第一写入功率Pw的顶部脉冲101; 偏置脉冲102，其跟随顶部脉冲101并且具有低于第一写入功率Pw的偏置功率Pm; 以及跟随偏置脉冲102并且具有低于第一写入功率Pw的第二写入功率P1的最后脉冲103。