Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate
2007-06-07
2011-10-11
Ghayour, Mohammad (Department: 2627)
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
C369S103000, C369S111000, C369S112010, C369S109010
Reexamination Certificate
active
08036072
ABSTRACT:
A holographic recording and reproduction system includes a servo optical path, which is used to provide a servo mechanism, so that holographic interference fringes can be stored continuously into a holographic recording medium, and when the reproduction signals are desired, they can be fetched and obtained swiftly and accurately by making use of the servo mechanism. In addition, the servo light spot of the servo optical path is located on the optical axis of an object lens, thus reducing the image aberrations produced and raising the quality of the signals read for the servo track searching. Moreover, the light intensity distribution of the reference beams reflected by the holographic recording medium is monitored and controlled, as such realizing the analysis and adjustment of the relative distance and inclination angle between the holographic recording and reproduction system and the holographic recording medium.
REFERENCES:
patent: 5953297 (1999-09-01), Maeda et al.
patent: 6181658 (2001-01-01), Van Den Enden et al.
patent: 6700686 (2004-03-01), King et al.
patent: 6721076 (2004-04-01), King et al.
patent: 6909529 (2005-06-01), Curtis
patent: 7576900 (2009-08-01), Lan et al.
patent: 2004/0212859 (2004-10-01), Tsukagoshi
patent: 2004/0264356 (2004-12-01), Chen et al.
patent: 2005/0002311 (2005-01-01), Ichihara et al.
patent: 2005/0007930 (2005-01-01), Horimai et al.
patent: 2005/0018260 (2005-01-01), Hirao et al.
patent: 2005/0036436 (2005-02-01), Horimai et al.
patent: 2005/0179969 (2005-08-01), Ogasawara
patent: 2005/0200928 (2005-09-01), Mori et al.
patent: 2007/0140091 (2007-06-01), Lin et al.
patent: 2007/0153347 (2007-07-01), Lan et al.
patent: 2007/0206448 (2007-09-01), Tsukagoshi et al.
patent: 2007/0242578 (2007-10-01), Tasaka et al.
patent: 2008/0273444 (2008-11-01), Ogasawara et al.
patent: I246682 (2006-01-01), None
patent: I265496 (2006-11-01), None
Jeng Tzuan-Ren
Lan Yung-Sung
Lin Chih-Ming
Birch, Stewart, Kolasch and Birch LLP
Ghayour Mohammad
Industrial Technology Research Institute
Yodichkas Aneeta
LandOfFree
Holographic recording and reproduction system having servo... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Holographic recording and reproduction system having servo..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Holographic recording and reproduction system having servo... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4292652