RU2169400C2 - Катадиоптрическая оптическая система, оптическая воспроизводящая головка и накопитель на оптических дисках, использующие эту систему, и оптический диск - Google Patents

Катадиоптрическая оптическая система, оптическая воспроизводящая головка и накопитель на оптических дисках, использующие эту систему, и оптический диск Download PDF

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Publication number
RU2169400C2
RU2169400C2 RU99118228/28A RU99118228A RU2169400C2 RU 2169400 C2 RU2169400 C2 RU 2169400C2 RU 99118228/28 A RU99118228/28 A RU 99118228/28A RU 99118228 A RU99118228 A RU 99118228A RU 2169400 C2 RU2169400 C2 RU 2169400C2
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RU
Russia
Prior art keywords
optical
focusing
focusing system
refractive
reproducing head
Prior art date
Application number
RU99118228/28A
Other languages
English (en)
Russian (ru)
Other versions
RU99118228A (ru
Inventor
Чул Воо ЛИ
Чонг Сам ЧУНГ
Йонг Хоон ЛИ
Чеол Сунг ЙЕОН
Джоонг Еон СЕО
Йоунг Мин ЧЕОНГ
Донг-Хо СИН
Кун Хо ЧО
Пионг Йонг СЕОНГ
Джанг Хоон ЙОО
Original Assignee
Самсунг Электроникс Ко., Лтд.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from KR1019980019876A external-priority patent/KR19990066690A/ko
Application filed by Самсунг Электроникс Ко., Лтд. filed Critical Самсунг Электроникс Ко., Лтд.
Application granted granted Critical
Publication of RU2169400C2 publication Critical patent/RU2169400C2/ru
Publication of RU99118228A publication Critical patent/RU99118228A/ru

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    • 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
    • G11B7/1387—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector using the near-field effect
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
    • G11B11/10547—Heads for reproducing using optical beam of radiation interacting with the magnetisation of an intermediate transfer element, e.g. magnetic film, included in the head
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10584—Record carriers characterised by the selection of the material or by the structure or form characterised by the form, e.g. comprising mechanical protection elements
    • 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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/0857—Arrangements for mechanically moving the whole head
    • G11B7/08576—Swinging-arm positioners
    • 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
    • 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
    • G11B7/0908—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 focusing only
    • 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
    • G11B7/122—Flying-type heads, e.g. analogous to Winchester type in magnetic 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
    • G11B7/12—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
    • G11B7/1372—Lenses
    • G11B7/1374—Objective lenses
    • 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
    • G11B7/22—Apparatus or processes for the manufacture of optical heads, e.g. assembly
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10552—Arrangements of transducers relative to each other, e.g. coupled heads, optical and magnetic head on the same base
    • G11B11/10554—Arrangements of transducers relative to each other, e.g. coupled heads, optical and magnetic head on the same base the transducers being disposed on the same side of the carrier
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10556—Disposition or mounting of transducers relative to record carriers with provision for moving or switching or masking the transducers in or out of their operative position
    • G11B11/10567—Mechanically moving the transducers
    • G11B11/10569—Swing arm positioners
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/1058—Flying heads
    • 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
    • G11B7/1372—Lenses
    • G11B2007/13725—Catadioptric lenses, i.e. having at least one internal reflective surface

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
RU99118228/28A 1997-11-22 1998-11-21 Катадиоптрическая оптическая система, оптическая воспроизводящая головка и накопитель на оптических дисках, использующие эту систему, и оптический диск RU2169400C2 (ru)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR1997/62146 1997-11-22
KR19970062146 1997-11-22
KR97/62146 1997-11-22
KR1998/19876 1998-05-29
KR98/19876 1998-05-29
KR1019980019876A KR19990066690A (ko) 1997-11-22 1998-05-29 니어필드를 발생하는 집속광학계와, 이를 채용한 광픽업 및 광디스크드라이브, 및 광디스크

Publications (2)

Publication Number Publication Date
RU2169400C2 true RU2169400C2 (ru) 2001-06-20
RU99118228A RU99118228A (ru) 2001-07-10

Family

ID=26633191

Family Applications (1)

Application Number Title Priority Date Filing Date
RU99118228/28A RU2169400C2 (ru) 1997-11-22 1998-11-21 Катадиоптрическая оптическая система, оптическая воспроизводящая головка и накопитель на оптических дисках, использующие эту систему, и оптический диск

Country Status (11)

Country Link
EP (2) EP1538614A3 (enExample)
JP (1) JP4198763B2 (enExample)
CN (1) CN1133996C (enExample)
BR (1) BR9806979A (enExample)
CA (1) CA2278416C (enExample)
DE (1) DE69836202T2 (enExample)
ID (1) ID23169A (enExample)
MY (1) MY122310A (enExample)
RU (1) RU2169400C2 (enExample)
TW (1) TW419596B (enExample)
WO (1) WO1999027532A1 (enExample)

Cited By (1)

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RU2195026C1 (ru) * 2001-11-20 2002-12-20 ООО "Медицина, культура и спорт" Оптический носитель записи и способ считывания информации с оптического носителя записи

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JP3436175B2 (ja) 1998-03-19 2003-08-11 富士ゼロックス株式会社 光ヘッドおよびディスク装置
EP1020853A4 (en) 1998-08-07 2001-02-21 Sony Corp CATADIOPTIC LENS, OPTICAL HEAD, AND OPTICAL RECORDING / PLAYBACK DEVICE
JP2000113484A (ja) * 1998-10-07 2000-04-21 Sony Corp 光学ヘッド用スライダ
JP3773681B2 (ja) 1999-01-08 2006-05-10 富士通株式会社 光学ヘッド、光学部品、および光記憶装置
KR100601612B1 (ko) 1999-07-08 2006-07-14 삼성전자주식회사 안정된 트랙킹이 가능한 광픽업장치
JP2001023245A (ja) 1999-07-09 2001-01-26 Sony Corp 光記録媒体および光記録装置
KR100644566B1 (ko) * 1999-09-29 2006-11-13 삼성전자주식회사 고밀도 광집속을 위한 대물렌즈 및 이를 채용한 광픽업장치
KR100657247B1 (ko) 1999-11-30 2006-12-19 삼성전자주식회사 고밀도 광집속을 위한 대물렌즈 및 이를 채용한광픽업장치
US6707026B2 (en) * 2000-08-04 2004-03-16 Minolta Co., Ltd. Solid immersion mirror and reproducing apparatus
KR20030023761A (ko) * 2001-06-21 2003-03-19 코닌클리케 필립스 일렉트로닉스 엔.브이. 광학 주사장치
KR100438571B1 (ko) * 2001-08-28 2004-07-02 엘지전자 주식회사 광 기록 및 재생 시스템용 광학렌즈
JP2003085808A (ja) * 2001-09-12 2003-03-20 Konica Corp 光学素子、光ピックアップ装置及び光学素子の製造方法
KR100439373B1 (ko) * 2001-09-13 2004-07-09 엘지전자 주식회사 이종 기록매체 호환 광픽업 장치
CN100383861C (zh) * 2004-09-09 2008-04-23 鸿富锦精密工业（深圳）有限公司 光学存储装置
KR100738078B1 (ko) * 2005-10-12 2007-07-12 삼성전자주식회사 근접장광발생장치와 이를 채용한 열보조 자기기록헤드
CN101848286A (zh) * 2010-04-01 2010-09-29 中兴通讯股份有限公司 双音多频信号发送方法及装置
JP5575159B2 (ja) * 2012-01-26 2014-08-20 シャープ株式会社 蛍光情報読み取り装置および蛍光情報読み取り方法
CN203273698U (zh) * 2013-04-16 2013-11-06 王海军 二次内反射式透镜及采用该透镜的led灯具

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US4835380A (en) * 1987-06-11 1989-05-30 U. S. Philips Corporation Scanning device for an optical recording and/or reproducing apparatus
EP0373699A1 (en) * 1988-12-13 1990-06-20 Koninklijke Philips Electronics N.V. Optical scanning device, mirror objective suitable for use in said device and optical write and/or read apparatus provided with said device
US5777953A (en) * 1995-12-25 1998-07-07 Sharp Kabushiki Kaishia Arrangement of magneto-optical recording medium which capable of reproducing an individual bit
DE19828672A1 (de) * 1997-06-26 1999-01-07 Hitachi Ltd Elektromagnetisches Kraftstoffeinspritzventil und Steuerverfahren hierfür
DE19850110A1 (de) * 1997-10-31 1999-05-06 Asahi Optical Co Ltd Optisches System für ein optisches Plattenlaufwerk

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JP3088619B2 (ja) * 1994-01-17 2000-09-18 富士通株式会社 光磁気記録媒体及び該媒体に記録された情報の再生方法
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US4835380A (en) * 1987-06-11 1989-05-30 U. S. Philips Corporation Scanning device for an optical recording and/or reproducing apparatus
EP0373699A1 (en) * 1988-12-13 1990-06-20 Koninklijke Philips Electronics N.V. Optical scanning device, mirror objective suitable for use in said device and optical write and/or read apparatus provided with said device
US5777953A (en) * 1995-12-25 1998-07-07 Sharp Kabushiki Kaishia Arrangement of magneto-optical recording medium which capable of reproducing an individual bit
DE19828672A1 (de) * 1997-06-26 1999-01-07 Hitachi Ltd Elektromagnetisches Kraftstoffeinspritzventil und Steuerverfahren hierfür
DE19850110A1 (de) * 1997-10-31 1999-05-06 Asahi Optical Co Ltd Optisches System für ein optisches Plattenlaufwerk

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2195026C1 (ru) * 2001-11-20 2002-12-20 ООО "Медицина, культура и спорт" Оптический носитель записи и способ считывания информации с оптического носителя записи
WO2003044782A1 (en) * 2001-11-20 2003-05-30 Galperin, Maxim Georgievich Optical recording medium and method for reading out information from optical recording medium

Also Published As

Publication number Publication date
MY122310A (en) 2006-04-29
JP2001509938A (ja) 2001-07-24
EP1538614A3 (en) 2008-05-28
CN1250538A (zh) 2000-04-12
DE69836202D1 (de) 2006-11-30
HK1024088A1 (en) 2000-09-29
CA2278416A1 (en) 1999-06-03
BR9806979A (pt) 2000-03-14
EP1538614A2 (en) 2005-06-08
DE69836202T2 (de) 2007-08-30
EP0954859B1 (en) 2006-10-18
JP4198763B2 (ja) 2008-12-17
TW419596B (en) 2001-01-21
CA2278416C (en) 2002-10-29
WO1999027532A1 (en) 1999-06-03
EP0954859A1 (en) 1999-11-10
ID23169A (id) 2000-03-23
CN1133996C (zh) 2004-01-07

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