JPS5439103A - Medium locator for fucus servo - Google Patents
Medium locator for fucus servoInfo
- Publication number
- JPS5439103A JPS5439103A JP10473977A JP10473977A JPS5439103A JP S5439103 A JPS5439103 A JP S5439103A JP 10473977 A JP10473977 A JP 10473977A JP 10473977 A JP10473977 A JP 10473977A JP S5439103 A JPS5439103 A JP S5439103A
- Authority
- JP
- Japan
- Prior art keywords
- medium
- fucus
- servo
- locator
- optical beam
- 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.)
- Pending
Links
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE: To accurately locate a medium and to obtain information signals having high S/N ratios by turning both an optical beam for recording and reproducing information signals and an optical beam for locating the medium of an objective lens into linearly polarized lights having different deflecting planes.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10473977A JPS5439103A (en) | 1977-09-02 | 1977-09-02 | Medium locator for fucus servo |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10473977A JPS5439103A (en) | 1977-09-02 | 1977-09-02 | Medium locator for fucus servo |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5439103A true JPS5439103A (en) | 1979-03-26 |
Family
ID=14388857
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10473977A Pending JPS5439103A (en) | 1977-09-02 | 1977-09-02 | Medium locator for fucus servo |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5439103A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2462758A1 (en) * | 1979-08-03 | 1981-02-13 | Thomson Csf | OPTICAL DEVICE FOR ACCESSING A TRACK RUN BY AN INFORMATION CARRIER AND OPTICAL MEMORY SYSTEM COMPRISING SUCH A DEVICE |
US4412743A (en) * | 1981-09-08 | 1983-11-01 | Discovision Associates | Off-axis light beam defect detector |
US4466087A (en) * | 1981-01-08 | 1984-08-14 | Xerox Corporation | Optical memory system for a reading/writing, verifying and tracking module |
US4546463A (en) * | 1981-04-21 | 1985-10-08 | U.S. Philips Corporation | Apparatus for recording and reading information tracks on an optical record carrier with a beam of radiation |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51144203A (en) * | 1975-06-06 | 1976-12-11 | Hitachi Ltd | Political device for information reproduction |
JPS5263614A (en) * | 1975-11-20 | 1977-05-26 | Sony Corp | Information detector |
-
1977
- 1977-09-02 JP JP10473977A patent/JPS5439103A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51144203A (en) * | 1975-06-06 | 1976-12-11 | Hitachi Ltd | Political device for information reproduction |
JPS5263614A (en) * | 1975-11-20 | 1977-05-26 | Sony Corp | Information detector |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2462758A1 (en) * | 1979-08-03 | 1981-02-13 | Thomson Csf | OPTICAL DEVICE FOR ACCESSING A TRACK RUN BY AN INFORMATION CARRIER AND OPTICAL MEMORY SYSTEM COMPRISING SUCH A DEVICE |
US4466087A (en) * | 1981-01-08 | 1984-08-14 | Xerox Corporation | Optical memory system for a reading/writing, verifying and tracking module |
US4546463A (en) * | 1981-04-21 | 1985-10-08 | U.S. Philips Corporation | Apparatus for recording and reading information tracks on an optical record carrier with a beam of radiation |
US4412743A (en) * | 1981-09-08 | 1983-11-01 | Discovision Associates | Off-axis light beam defect detector |
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