KR910008697A - 상회전기의 서보회로 - Google Patents
상회전기의 서보회로 Download PDFInfo
- Publication number
- KR910008697A KR910008697A KR1019900016002A KR900016002A KR910008697A KR 910008697 A KR910008697 A KR 910008697A KR 1019900016002 A KR1019900016002 A KR 1019900016002A KR 900016002 A KR900016002 A KR 900016002A KR 910008697 A KR910008697 A KR 910008697A
- Authority
- KR
- South Korea
- Prior art keywords
- rotor
- phase
- servo circuit
- phase rotor
- generator
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
-
- 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
- G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
- G11B7/003—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent
- G11B7/0031—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent using a rotating head, e.g. helicoidal recording
-
- 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
-
- 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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
-
- 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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1359—Single prisms
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Control Of Electric Motors In General (AREA)
- Optical Head (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 상회전 서보회로의 계통도.
제2도는 본 발명의 상회전기 및 회전드럼의 개략도.
제3a 내지 3e도는 본 발명의 파형 설명도.
Claims (2)
- 회전체의 각 속도에 대해서 소정의 각속도로 회전하는 상회전기의 서보회로에 있어서, 상기 상회전기 및 회전체에 그 일부가 직선적으로 크기가 변화하는 아나로그 신호가 얻어지는 각도 검출수단을 설치하고, 이 각도 검출수단에서 얻어지는 아나로그 신호의 어느한편을 2치화한 2치신호로 다른 편의 아나로그 신호를 샘플링 한 샘플링치에 의거하여 상기 회전기를 서보하여 형성되는 것을 특징으로 하는 상회전기의 서보회로.
- 회전체의 각 속도에 대해서, 소정의 각속도로 회전하는 상회전기의 서보회로에 있어서, 상기 상회전기 및 회전체에 각각 펄스 발생기 및 주파수 발생기를 설치하여, 처음에 상기 상회전기를 상기 상회전기와 회전체의 펄스 발생기의 위상체에 의거해서 서보제어하여, 룩크 후에 상기 상회전기와 회전체와의 주파수 발생기의 위상차에 의거해서 서보 제어하여 형성이 되는 것을 특징으로 하는 상회전기의 서보회로.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP268843 | 1989-10-16 | ||
JP1268843A JP2811816B2 (ja) | 1989-10-16 | 1989-10-16 | イメージローテータのサーボ回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR910008697A true KR910008697A (ko) | 1991-05-31 |
KR100187907B1 KR100187907B1 (ko) | 1999-06-01 |
Family
ID=17464041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019900016002A KR100187907B1 (ko) | 1989-10-16 | 1990-10-10 | 이미지 로테이터의 서보회로 |
Country Status (5)
Country | Link |
---|---|
US (1) | US5155720A (ko) |
EP (1) | EP0424250B1 (ko) |
JP (1) | JP2811816B2 (ko) |
KR (1) | KR100187907B1 (ko) |
DE (1) | DE69024170T2 (ko) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3194390B2 (ja) * | 1991-08-09 | 2001-07-30 | ソニー株式会社 | 光走査位置合わせ方法、光の集光装置、光記録方法および光記録装置 |
JPH05109092A (ja) * | 1991-10-14 | 1993-04-30 | Sony Corp | 光テープ記録再生装置 |
US5524105A (en) * | 1992-12-29 | 1996-06-04 | Eastman Kodak Company | Helical optical tape read/write system using at least one laser array |
WO2007092785A2 (en) * | 2006-02-02 | 2007-08-16 | Otsi Holdings Llc | Optical tape media, marking, systems, and apparatus and process for producing thereof |
JP2011151154A (ja) | 2010-01-20 | 2011-08-04 | Fujitsu Ltd | 逆流防止装置、電子装置および逆流防止装置の製造方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3503058A (en) * | 1967-03-06 | 1970-03-24 | Bell Telephone Labor Inc | Multiple memory synchronizing arrangement |
US4163600A (en) * | 1974-10-21 | 1979-08-07 | Eli S. Jacobs | Light beam scanner |
US4495609A (en) * | 1975-03-10 | 1985-01-22 | Digital Recording Corporation | Recording and playback system |
US4669070A (en) * | 1979-09-18 | 1987-05-26 | Rca Corporation | Signal format for optical tape record/playback system |
US4661941A (en) * | 1979-09-18 | 1987-04-28 | Rca Corporation | Optical video or data tape record and playback apparatus |
US4633455A (en) * | 1985-03-25 | 1986-12-30 | Rca Corporation | Headwheel for a multiple beam optical tape playback system |
WO1987002499A1 (en) * | 1985-10-10 | 1987-04-23 | Opticon Technology Incorporated | Apparatus for recording and reading optical data marks on an optical medium |
US4815067A (en) * | 1986-10-06 | 1989-03-21 | Thorn Emi Plc. | Optical rotary headwheel tape recording system |
US4970707A (en) * | 1987-09-04 | 1990-11-13 | Hitachi, Ltd. | Optical tape apparatus with a tracking control mechanism and/or a focusing control mechanism |
JP2595599B2 (ja) * | 1987-12-29 | 1997-04-02 | ソニー株式会社 | 情報記録装置 |
US4939715A (en) * | 1987-12-29 | 1990-07-03 | Minnesota Mining And Manufacturing Company | Tape scanning apparatus |
-
1989
- 1989-10-16 JP JP1268843A patent/JP2811816B2/ja not_active Expired - Fee Related
-
1990
- 1990-10-10 KR KR1019900016002A patent/KR100187907B1/ko not_active IP Right Cessation
- 1990-10-15 US US07/597,151 patent/US5155720A/en not_active Expired - Lifetime
- 1990-10-16 DE DE69024170T patent/DE69024170T2/de not_active Expired - Fee Related
- 1990-10-16 EP EP90402907A patent/EP0424250B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2811816B2 (ja) | 1998-10-15 |
EP0424250A2 (en) | 1991-04-24 |
EP0424250A3 (en) | 1992-01-15 |
DE69024170T2 (de) | 1996-05-02 |
US5155720A (en) | 1992-10-13 |
DE69024170D1 (de) | 1996-01-25 |
JPH03130935A (ja) | 1991-06-04 |
KR100187907B1 (ko) | 1999-06-01 |
EP0424250B1 (en) | 1995-12-13 |
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A201 | Request for examination | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
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Payment date: 20060102 Year of fee payment: 8 |
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LAPS | Lapse due to unpaid annual fee |