High compactness mother disc RW machine control system
Title：
High compactness mother disc RW machine control system
Application Number：
 02131064
Application Date：
 2002/09/28
Announcement Date：
 2003/03/12
Pub. Date：
Publication Number：
 1402141
Announcement Number：
 1224915
Grant Date：
 2005-10-26
Granted Pub. Date：
 2005-10-26
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 G06F 13/00, G11B 31/00, G06F 9/38, G11B 20/10
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Li Qingxiang, Li Sheng, Li Yuhe
Key Words：
 High compactness, mother disc, RW machine, control system
Abstract：
 A controller for high-density CD-RW device of mother disc is composed of DSP control system, drive system of executing mechanism and CD-RW unit of mother disc. Under the control of DSP system, the circular or linear raster read head of said CD-RW unit can real-time acquire the rotatino angle information of axial and radial motors to cooperate both motors for generating correct Archimedes' spiral, writing the traces. Its advantages are high control precision and stability.
Claim：
Priority：
PCT：
LegalStatus：

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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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