公开(公告)号：EP2384510A1

公开(公告)日：2011-11-09

申请号：EP09771811.8

申请日：2009-12-03

申请人： General Electric Company

发明人： OSTROVERKHOV, Victor, Petrovich ,  WELLES, Kenneth, Brakeley ,  LAWRENCE, Brian, Lee ,  SHI, Xiaolei ,  REN, Zhiyuan ,  CHEVERTON, Mark ,  KUSCH, Ruediger

IPC分类号： G11B7/0065 ,  G11B7/09 ,  G11B7/135

CPC分类号： G11B7/083 ,  G11B7/0065 ,  G11B7/0908 ,  G11B7/0927 ,  G11B7/1369 ,  G11B7/1378

摘要： A system and method of operating a dual-beam detection system of a holographic data storage disc, including: impinging a data beam on a data layer of the holographic data storage disc; impinging a tracking beam on a tracking element of the holographic data storage disc; detecting a reflection of the tracking beam from the tracking element; and coordinating position of the data beam relative to the tracking beam. Embodiments compensate for the variation in vertical spacing of data and tracking beams due to the data beam being uncollimated at the objetive lens

摘要翻译： 一种系统和操作全息数据存储盘的双束检测系统，包括方法：撞击在全息数据存储盘的数据层上的数据束; 撞击在全息数据存储盘的跟踪元件上的跟踪光束; 检测来自跟踪元件跟踪光束的反射; 和协调数据束相对于追踪光的位置。