公开(公告)号：US07483189B2

公开(公告)日：2009-01-27

申请号：US11378395

申请日：2006-03-20

申请人： Yoshiyuki Matsumura ,  Ian Russell Redmond ,  Keith Malang

发明人： Yoshiyuki Matsumura ,  Ian Russell Redmond ,  Keith Malang

IPC分类号： G03H1/10 ,  G03H1/02

CPC分类号： G11B7/0956 ,  G03H2001/0473 ,  G11B7/0065 ,  G11B7/00772

摘要： Even when a tilt error is caused in a holographic memory in a direction perpendicular to a surface including optical axes of a signal beam and a reference beam, the signal beam and the reference beam are allowed to enter the holographic memory at adequate angles relative thereto at all times by suppression of the tilt error. During recording and reproducing operations, the reference incident angle of the reference beam in the radial tilt direction is detected based on a received light state. A tilt actuator for displacing the holographic memory medium in the radial tilt direction is driven to adjust an incident angle of the reference beam in the radial tilt direction to the reference angle Sr. Then, the signal beam and the reference beam are emitted to the holographic memory medium to execute the recording and reproducing operations.

摘要翻译： 即使当全息存储器在垂直于包括信号光束和参考光束的光轴的表面的方向上产生倾斜误差时，信号光束和参考光束被允许以相对于其的适当角度进入全息存储器 所有时间通过​​抑制倾斜误差。 在记录和再现操作期间，基于接收到的光状态来检测参考光束在径向倾斜方向上的参考入射角。 驱动用于沿径向倾斜方向移动全息存储介质的倾斜致动器，以将参考光束在径向倾斜方向上的入射角度调整为参考角度Sr.然后，信号光束和参考光束被发射到全息图 存储介质，以执行记录和再现操作。