KR960702149A - 광학식 주사 장치(Optical scanning device) - Google Patents
광학식 주사 장치(Optical scanning device) Download PDFInfo
- Publication number
- KR960702149A KR960702149A KR1019950704505A KR19950704505A KR960702149A KR 960702149 A KR960702149 A KR 960702149A KR 1019950704505 A KR1019950704505 A KR 1019950704505A KR 19950704505 A KR19950704505 A KR 19950704505A KR 960702149 A KR960702149 A KR 960702149A
- Authority
- KR
- South Korea
- Prior art keywords
- detector
- signal
- generating
- detectors
- adjustment error
- 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.)
- Abandoned
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0901—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following only
- G11B7/0903—Multi-beam tracking systems
Landscapes
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP94200438.3 | 1994-02-22 | ||
| EP94200438 | 1994-02-22 | ||
| PCT/IB1995/000065 WO1995022822A1 (en) | 1994-02-22 | 1995-01-31 | Optical scanning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR960702149A true KR960702149A (ko) | 1996-03-28 |
Family
ID=8216657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950704505A Abandoned KR960702149A (ko) | 1994-02-22 | 1995-01-31 | 광학식 주사 장치(Optical scanning device) |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20010024409A1 (OSRAM) |
| EP (1) | EP0702824A1 (OSRAM) |
| JP (1) | JPH08509567A (OSRAM) |
| KR (1) | KR960702149A (OSRAM) |
| CN (1) | CN1048106C (OSRAM) |
| SG (1) | SG49121A1 (OSRAM) |
| TW (1) | TW276336B (OSRAM) |
| WO (1) | WO1995022822A1 (OSRAM) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101048817A (zh) * | 2004-10-26 | 2007-10-03 | 皇家飞利浦电子股份有限公司 | 光学记录设备的补偿增益 |
| KR20080059643A (ko) * | 2005-10-14 | 2008-06-30 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 광학 기록매체의 주사 장치 및 방법과 광학 기록매체 |
| EP2009626A1 (en) | 2007-06-29 | 2008-12-31 | Deutsche Thomson OHG | Apparatus comprising a pickup unit providing three beams for reading data from or writing data to an optical storage medium, and respective optical storage medium |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW221074B (OSRAM) * | 1991-05-10 | 1994-02-11 | Philips Nv | |
| EP0525896B1 (en) * | 1991-08-01 | 1997-01-02 | Koninklijke Philips Electronics N.V. | Compatible optical scanning device |
-
1995
- 1995-01-31 KR KR1019950704505A patent/KR960702149A/ko not_active Abandoned
- 1995-01-31 EP EP95905741A patent/EP0702824A1/en not_active Ceased
- 1995-01-31 JP JP7521690A patent/JPH08509567A/ja active Pending
- 1995-01-31 CN CN95190098A patent/CN1048106C/zh not_active Expired - Fee Related
- 1995-01-31 WO PCT/IB1995/000065 patent/WO1995022822A1/en not_active Ceased
- 1995-01-31 SG SG1996006218A patent/SG49121A1/en unknown
- 1995-02-09 TW TW084101123A patent/TW276336B/zh active
- 1995-02-10 US US08/386,794 patent/US20010024409A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| TW276336B (OSRAM) | 1996-05-21 |
| CN1123579A (zh) | 1996-05-29 |
| US20010024409A1 (en) | 2001-09-27 |
| SG49121A1 (en) | 1998-05-18 |
| EP0702824A1 (en) | 1996-03-27 |
| JPH08509567A (ja) | 1996-10-08 |
| WO1995022822A1 (en) | 1995-08-24 |
| CN1048106C (zh) | 2000-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4423496A (en) | Apparatus for reading and/or writing an optically readable information structure | |
| KR970706566A (ko) | 초점제어회로를 포함하는, 다층 기록매체용 광학주사장치(Optical scanning apparatus for a multi-layer record carrier, including a focus control circuit) | |
| JPS57130240A (en) | Optical information recording and reproducing device and information recording medium for it | |
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| WO1998001854A3 (en) | Device for scanning information tracks on a record carrier | |
| KR930008763A (ko) | 광 픽업 장치 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PA0105 | International application |
St.27 status event code: A-0-1-A10-A15-nap-PA0105 |
|
| R17-X000 | Change to representative recorded |
St.27 status event code: A-3-3-R10-R17-oth-X000 |
|
| PG1501 | Laying open of application |
St.27 status event code: A-1-1-Q10-Q12-nap-PG1501 |
|
| R18-X000 | Changes to party contact information recorded |
St.27 status event code: A-3-3-R10-R18-oth-X000 |
|
| R18-X000 | Changes to party contact information recorded |
St.27 status event code: A-3-3-R10-R18-oth-X000 |
|
| R17-X000 | Change to representative recorded |
St.27 status event code: A-3-3-R10-R17-oth-X000 |
|
| PN2301 | Change of applicant |
St.27 status event code: A-3-3-R10-R13-asn-PN2301 St.27 status event code: A-3-3-R10-R11-asn-PN2301 |
|
| PN2301 | Change of applicant |
St.27 status event code: A-3-3-R10-R13-asn-PN2301 St.27 status event code: A-3-3-R10-R11-asn-PN2301 |
|
| A201 | Request for examination | ||
| P11-X000 | Amendment of application requested |
St.27 status event code: A-2-2-P10-P11-nap-X000 |
|
| P13-X000 | Application amended |
St.27 status event code: A-2-2-P10-P13-nap-X000 |
|
| PA0201 | Request for examination |
St.27 status event code: A-1-2-D10-D11-exm-PA0201 |
|
| E701 | Decision to grant or registration of patent right | ||
| PE0701 | Decision of registration |
St.27 status event code: A-1-2-D10-D22-exm-PE0701 |
|
| NORF | Unpaid initial registration fee | ||
| PC1904 | Unpaid initial registration fee |
St.27 status event code: A-2-2-U10-U13-oth-PC1904 St.27 status event code: N-2-6-B10-B12-nap-PC1904 |
|
| R18-X000 | Changes to party contact information recorded |
St.27 status event code: A-3-3-R10-R18-oth-X000 |
|
| PN2301 | Change of applicant |
St.27 status event code: A-3-3-R10-R13-asn-PN2301 St.27 status event code: A-3-3-R10-R11-asn-PN2301 |
|
| R18-X000 | Changes to party contact information recorded |
St.27 status event code: A-3-3-R10-R18-oth-X000 |
|
| R18-X000 | Changes to party contact information recorded |
St.27 status event code: A-3-3-R10-R18-oth-X000 |
|
| R18-X000 | Changes to party contact information recorded |
St.27 status event code: A-3-3-R10-R18-oth-X000 |
|
| R18 | Changes to party contact information recorded |
Free format text: ST27 STATUS EVENT CODE: A-3-3-R10-R18-OTH-X000 (AS PROVIDED BY THE NATIONAL OFFICE) |
|
| R18-X000 | Changes to party contact information recorded |
St.27 status event code: A-3-3-R10-R18-oth-X000 |