CN1317701C - Optical reading-writing head device - Google Patents
Optical reading-writing head device Download PDFInfo
- Publication number
- CN1317701C CN1317701C CNB031525741A CN03152574A CN1317701C CN 1317701 C CN1317701 C CN 1317701C CN B031525741 A CNB031525741 A CN B031525741A CN 03152574 A CN03152574 A CN 03152574A CN 1317701 C CN1317701 C CN 1317701C
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- CN
- China
- Prior art keywords
- polarized light
- light
- degree
- spectroscope
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
Description
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB031525741A CN1317701C (en) | 2003-08-04 | 2003-08-04 | Optical reading-writing head device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB031525741A CN1317701C (en) | 2003-08-04 | 2003-08-04 | Optical reading-writing head device |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1581317A CN1581317A (en) | 2005-02-16 |
CN1317701C true CN1317701C (en) | 2007-05-23 |
Family
ID=34579849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB031525741A Expired - Fee Related CN1317701C (en) | 2003-08-04 | 2003-08-04 | Optical reading-writing head device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN1317701C (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1135802A (en) * | 1994-07-29 | 1996-11-13 | 索尼公司 | Optical pick-up apparatus |
CN1414546A (en) * | 2001-10-25 | 2003-04-30 | 三洋电机株式会社 | Optical disk device and incline detection method |
JP2003141771A (en) * | 2001-11-06 | 2003-05-16 | Sharp Corp | Optical pickup device |
-
2003
- 2003-08-04 CN CNB031525741A patent/CN1317701C/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1135802A (en) * | 1994-07-29 | 1996-11-13 | 索尼公司 | Optical pick-up apparatus |
CN1414546A (en) * | 2001-10-25 | 2003-04-30 | 三洋电机株式会社 | Optical disk device and incline detection method |
JP2003141771A (en) * | 2001-11-06 | 2003-05-16 | Sharp Corp | Optical pickup device |
Also Published As
Publication number | Publication date |
---|---|
CN1581317A (en) | 2005-02-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: YUTIAN STOCK CO., LTD. Free format text: FORMER OWNER: HONGJING SCIENCE + TECH. CO., LTD. Effective date: 20071228 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20071228 Address after: Delaware Patentee after: VIA Tech Inc. Address before: Hsinchu city of Taiwan Province Patentee before: Hongjing Science-Technology Co., Ltd. |
|
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070523 Termination date: 20130804 |