Title:
A master-oriented servo control system with the parallel track in holographic duplicate systems
Document Type and Number:
Japanese Patent JP5989986
Kind Code:
B2
Abstract:
Techniques are provided for controlling the reading of optical data 10 from a master disk 46 in a holographic replication system. Imperfections in the master disk or movement of the disk during a recording process may cause source beams to deviate from target data tracks. In some embodiments, a detector system 38 is used to determine the focus and alignment of the source beams on the master disk, as well as the tilt and rotation of the disk with respect to the holographic replication system. The detector system 38 may detect deviations in the intensity distribution of the reflections of the source beams and generate an error signal corresponding to focusing, tracking, tilt, and/or rotational errors. Servo-mechanical devices 28 may actuate optical components to compensate for such errors.
Inventors:
Shoefen One
Pierino Gianni Bonanni
Xiaoray Sea
Chiyuan Len
Fa Char
Victor Petrovich Ostrobekhoff
Sinhwa Wang
Pierino Gianni Bonanni
Xiaoray Sea
Chiyuan Len
Fa Char
Victor Petrovich Ostrobekhoff
Sinhwa Wang
Application Number:
JP2011249288A
Publication Date:
September 07, 2016
Filing Date:
November 15, 2011
Export Citation:
Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
G11B7/28; G03H1/20; G03H1/26; G11B7/005; G11B7/0065; G11B7/095; G11B7/1263; G11B7/1267; G11B7/14
Domestic Patent References:
| JP2010157313A | ||||
| JP2009110638A | ||||
| JP2009015880A | ||||
| JP5020699A | ||||
| JP2008071435A | ||||
| JP2010157312A | ||||
| JP2010250908A | ||||
| JP2009271954A | ||||
| JP2005326710A |
Attorney, Agent or Firm:
Arakawa Satoshi
Hirokazu Ogura
Toshihisa Kurokawa
Hirokazu Ogura
Toshihisa Kurokawa