Method of realizing parallel read of multiple wavelength and multilayer optical disc, its optical head and disc
Title：
Method of realizing parallel read of multiple wavelength and multilayer optical disc, its optical head and disc
Application Number：
 200410030784
Application Date：
 2004/04/09
Announcement Date：
 2005/01/12
Pub. Date：
 2006/05/03
Publication Number：
 1564249
Announcement Number：
 1254800
Grant Date：
 2006-5-3
Granted Pub. Date：
 2006-5-3
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 G11B 7/005, G11B 7/135, G11B 7/24
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Jia Huibo, Guan Jiqi, Ma Cheng
Key Words：
 multiple wavelength, multilayer, optical disc, parallel read, optical head, disc
Abstract：
 The invention belongs to high-density digital optical storage technical area, especially multiple wavelength multilayer optical storage technical area. Characters are that using axial chromatic defect of adjusting chromatic aberration lens in optical head focalizes lasers in different wavelengths on different recording layers on disk in multiple layers so as to realize reading out data in parallel. The invented method discloses relationship of fitting parameters as well as optical head and multiple wavelength multilayer optical disks suitable for the method.
Claim：
Priority：
PCT：
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2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
2008-3-31
  Selected patents owned by Tsinghua University filed in 2006 and 2007 are load.







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