Optical disk vertical deviation detecting method
Title：
Optical disk vertical deviation detecting method
Application Number：
 200610035474
Application Date：
 2006/05/10
Announcement Date：
 2006/10/25
Pub. Date：
Publication Number：
 1851814
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 94[China|shenzhen]
IPC：
 G11B 7/09
Applicant(s)：
 Shenzhen Graduate School, Tsinghua Univ.
Inventor(s)：
 Ma Jianshe, Zhang Buqing, Tang Yi,Li Lihua,Mao Leshan,Pan Longfa,Yuan Haibo,Yan Mingming,Ji Jiandong
Key Words：
 Optical disk, vertical deviation, detecting method
Abstract：
 This invention puts forward a method for testing CD vertical deviation characterizing that it gets the optical disk surface vertical deviation and the wrap parameter based on testing torquer of an optical head, in which, it utilizes a Doppler laser vibration meter to get amplitude-frequency characteristic of the torquer on the focusing direction then tests the relation of the drive voltage and the CD wrap on the focusing coil suitable for testing DVD/CD etc. disks.
Claim：
Priority：
PCT：
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