Method and device for reading digital color CD |
Title: |
Method and device for reading digital color CD |
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Application Number: |
200410037430 |
Application Date: |
2004/04/30 |
Announcement Date: |
2005/01/26 |
Pub. Date: |
2006/06/07 |
Publication Number: |
1571040 |
Announcement Number: |
1258761 |
Grant Date: |
2006-6-7 |
Granted Pub. Date: |
2006-6-7 |
ApplicationType: |
Invention |
State/Country: |
11[China|beijing] |
IPC: |
G11B 7/135, G11B 7/125 |
Applicant(s): |
Tsinghua University |
Inventor(s): |
Xu Duanyi, Song Jie, Qi Guosheng |
Key Words: |
Method, device, reading, digital color CD |
Abstract: |
The reading method and apparatus of digital colored CD belong to the CD information-storing field. This invention discloses the reading method and apparatus of digital colored CD. It adopted the white light LED-illuminating source, shaping collimating mirror, color-splitting prisms, filtering slice, and achromatic objective structure. It focus the parallel light beam from the white light LED illuminating source to the digital colored CD through the achromatic objective to realize the reading process. This invention avoids the coordination difficulty of light waves with several frequencies in different laser, and it needs no light combination apparatus. The structure of reading device is simple. The reading device can also read the digital colored CD in parallel mode, and increase the CD data reading speed and storage capacity. |
Claim: |
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Priority: |
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PCT: |
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