公开(公告)号：US20100110846A1

公开(公告)日：2010-05-06

申请号：US12571752

申请日：2009-10-01

申请人： Young-jae PARK ,  Jae-cheol Bae ,  In-Joo Kim

发明人： Young-jae PARK ,  Jae-cheol Bae ,  In-Joo Kim

IPC分类号： G11B7/00

CPC分类号： G11B7/0065

摘要： A method and apparatus to control a position in which data is to be recorded on a holographic data recording medium by using interference between a reference light and a signal light, the method including: irradiating the reference light and the signal light on the holographic data recording medium; generating a focus error signal that indicates a distance difference between a first focus corresponding to a focus of the reference light on the holographic data recording medium and a second focus corresponding to a focus of the signal light on the holographic data recording medium, based on information about a reflective signal light generated when the irradiated signal light is reflected from a reflective transmission layer of the holographic data recording medium; and moving the second focus to a position of the first focus, based on the focus error signal.

摘要翻译： 一种通过使用参考光和信号光之间的干涉来控制要在全息数据记录介质上记录数据的位置的方法和装置，所述方法包括：将参考光和信号光照射在全息数据记录上 中; 基于信息产生指示对应于全息数据记录介质上的参考光的焦点的第一焦点与对应于全息数据记录介质上的信号光的焦点的第二焦点之间的距离差的聚焦误差信号 关于当照射的信号光从全息数据记录介质的反射透射层反射时产生的反射信号光; 并且基于聚焦误差信号将第二焦点移动到第一焦点的位置。

公开(公告)号：US08363532B2

公开(公告)日：2013-01-29

申请号：US12571752

申请日：2009-10-01

申请人： Young-jae Park ,  Jae-cheol Bae ,  In-Joo Kim

发明人： Young-jae Park ,  Jae-cheol Bae ,  In-Joo Kim

IPC分类号： G11B7/00

CPC分类号： G11B7/0065

摘要： A method and apparatus to control a position in which data is to be recorded on a holographic data recording medium by using interference between a reference light and a signal light, the method including: irradiating the reference light and the signal light on the holographic data recording medium; generating a focus error signal that indicates a distance difference between a first focus corresponding to a focus of the reference light on the holographic data recording medium and a second focus corresponding to a focus of the signal light on the holographic data recording medium, based on information about a reflective signal light generated when the irradiated signal light is reflected from a reflective transmission layer of the holographic data recording medium; and moving the second focus to a position of the first focus, based on the focus error signal.

摘要翻译： 一种通过使用参考光和信号光之间的干涉来控制要在全息数据记录介质上记录数据的位置的方法和装置，所述方法包括：将参考光和信号光照射在全息数据记录上 中; 基于信息产生指示对应于全息数据记录介质上的参考光的焦点的第一焦点与对应于全息数据记录介质上的信号光的焦点的第二焦点之间的距离差的聚焦误差信号 关于当照射的信号光从全息数据记录介质的反射透射层反射时产生的反射信号光; 并且基于聚焦误差信号将第二焦点移动到第一焦点的位置。