Apparatus for detecting focusing, tracking and eccentric performances of DVD |
Title： |
| Apparatus for detecting focusing, tracking and eccentric performances of DVD |
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Application Number： |
200510103290 |
Application Date： |
2005/09/23 |
Announcement Date： |
2006/05/10 |
Pub. Date： |
2007/10/24 |
Publication Number： |
1770271 |
Announcement Number： |
100345192 |
Grant Date： |
2007-10-24 |
Granted Pub. Date： |
2007-10-24 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
G11B 7/00, G11B 7/26, G11B 20/00 |
Applicant(s)： |
Tsinghua University |
Inventor(s)： |
Zhang Jianyong, Ma Jianshe, Chen Hongxian, Pan Longfa, Xu Duanyi, Zhang Lei, Qin Liqin |
Key Words： |
DVD, focusing, tracking, eccentric performances, detecting apparatus |
Abstract： |
The invention relates to an apparatus for detecting focus of high rapid digital general compact disk, trace tracking and off-center performance. In the detecting apparatus, disk for detecting is held via clamp on disk tray which is positioned on the main axial of motor, optical header is under detected disk and is positioned on the base plate of feeding platform via mount and being linked with feeding platform at the same time. Instrument container is connected with optical header and feeding platform separately. Computer is connected with instrument container via signal wires. The inventive apparatus has the advantages of having less parameter for testing disk, of being rapid and high detecting efficiency. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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