Optical reading method and system |
Title: |
Optical reading method and system |
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Application Number: |
200610061768 |
Application Date: |
2006/07/19 |
Announcement Date: |
2007/07/25 |
Pub. Date: |
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Publication Number: |
101004921 |
Announcement Number: |
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Grant Date: |
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Granted Pub. Date: |
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ApplicationType: |
Invention |
State/Country: |
94[China|shenzhen] |
IPC: |
G11B 7/00, G11B 7/12, G11B 7/125, G11B 7/135 |
Applicant(s): |
Shenzhen Graduate School, Tsinghua Univ. |
Inventor(s): |
Ma Jianshe, Li Lihua, Yan Shuang, Tang Yi, Cheng Xuemin, Ma Leshan, Pan Longfa, Zhang Lei, Li Hui, Lu Junhui, Wang Yuxiu, Sun Manlong, Yang Mingsheng |
Key Words: |
Optical reading, method and system |
Abstract: |
An optical fetching method includes emitting blue laser beam, processing energy of said laser beam to generate parallel light beam with center intensity in circular form, using circular polarized light of said parallel light beam to carry out focusing-collection on gangway signal data in optical disc, converting circular polarized light reflected by surface gangway of optical disc to be S polarized light. The system user for realizing said method is also disclosed. |
Claim: |
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Priority: |
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PCT: |
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