KR960027854A - 확산 스펙트럼형 수신기내의 역확산 코드 위상 검출 장치 - Google Patents
확산 스펙트럼형 수신기내의 역확산 코드 위상 검출 장치 Download PDFInfo
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- KR960027854A KR960027854A KR1019950072148A KR19950072148A KR960027854A KR 960027854 A KR960027854 A KR 960027854A KR 1019950072148 A KR1019950072148 A KR 1019950072148A KR 19950072148 A KR19950072148 A KR 19950072148A KR 960027854 A KR960027854 A KR 960027854A
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- 238000001514 detection method Methods 0.000 title claims abstract 4
- 238000001228 spectrum Methods 0.000 title claims abstract 4
- 238000000034 method Methods 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000000284 extract Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7073—Synchronisation aspects
- H04B1/7075—Synchronisation aspects with code phase acquisition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7073—Synchronisation aspects
- H04B1/7075—Synchronisation aspects with code phase acquisition
- H04B1/70755—Setting of lock conditions, e.g. threshold
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/709—Correlator structure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7097—Interference-related aspects
- H04B1/711—Interference-related aspects the interference being multi-path interference
- H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
- H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
- H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
- H04B2201/70701—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation featuring pilot assisted reception
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
확산 스펙트럼 변조를 거친 데이타 신호와 파일럿 신호를 수신하고, 파일럿 신호를 역환산 처리함으로 복조에 사용된 서로다른 많은 역확산 코드들을 검출하며, 많은 역확산 코드를 사용하여 데이타 신호의 역확산 변조를 각기 수행하고, 위상 매칭에 따른 출력에 대해 가중치 처리를 행하고, 출력을 동기화시키고, 최종 데이타를 출력시키는, 라케 동기화 복조 기능을 갖는 SS 수신기내의 역확산 코드 위상 검출 장치는 탐색 상관기, 탐색 처리 제어부와 탐색 처리부를 포함한다. 탐색 상관기는 역확산 코드의 위상들을 순차적으로 변환시키는 동시에 파이럿 신호와 역확산 코드의 상관 결과를 얻는다. 탐색 처리 제어부는 탐색 상관기로부터 순차적으로 나온 상관 결과 출력을 수신하고 상관 결과를 최대치로 뽑아낸다. 탐색 처리 제어부에 의해 감소하는 순으로 뽑아낸 상관 결과로부터 많은 결과를 얻음으로써 복조에 사용된 많은 역확산 코드 위상들을 검출한다.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제6도는 본 발명의 실시가 응용된 SS 수신기의 구조를 보여주는 도면, 제7도는 제6도에 있는 SS 수신기내의 탐색 과정 제어부와 탐색 처리부에 의해 수행된 과정의 예를 보여주는 플로우-차트, 제8도는 복조와 탐색 결과를 위해 사용된 역확산 코드 위상들을 얻기 위한 과정에 있어서, 본 발명과 종래의 기술에 있는 탐색 과정 수행의 형태를 보여주는 도면.
Claims (3)
- 확산 스펙트럼 변조를 거친 데이타 신호와 파일럿 신호를 수신하고, 파일럿 신호를 역환산 처리함으로써 복조에 사용된 서로다른 많은 역환산 코드 위상들을 검출하며, 많은 역확산 코드 위상들을 이용하여 데이타 신호의 역확산 변조를 각기 행하며, 위상 매칭에 따른 출력에 대해 가중치 처리를 행하며, 출력을 동기화시키고, 최종 데이타를 출력시키는 라케 동기화 복조 기능을 갖는 확산 스펙트럼 수식내의 역확산 코드 위상 검출 장치는, 역확산 코드의 위상을 순차적으로 변화시키면서 파일럿 신호와 역확산 코드의 상관 결과를 얻는 탐색 상관기와, 상기의 탐색 상관기로부터 순차적으로 나온 상관 결과들의 출력을 수신하고, 최대치인 상관 결과들을 제어부와 출력하는 탐색 처리 제어부에 의해 감소하는 값순으로 뽑아낸 상관 결과들로부터 다수의 상관 결과를 얻음으로써 복조에 사용된 많은 역환산 코드 위상들을 검출하는 탐색 처리부를 포함하는 역확산 코드 위상 검출 장치.
- 제1항에 있어서, 상기 탐색 처리 제어부는 상기의 탐색 상관기로부터 나온 상관 결과 출력과 바로 이전과 뒤의 상관 결과들을 비교함으로써, 최대치인 상관결과를 결정하는 역확산 코드 위상 검출 장치.
- 제2항에 있어서, 상기 탐색으로부터 나온 상관 결과에 근거하여 기준점을 설정하기 위한 기준점 설정수단을 더 포함하며, 상기 탐색 처리 제어부는 상기의 기준점 설정 수단에 의하여 설정된 기준을 넘고 이전과 이후의 상관 결과보다 큰 상관 결과를 추출하는 역확산 코드 위상 검출 장치.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP94-336174 | 1994-12-22 | ||
JP33617494A JP2605648B2 (ja) | 1994-12-22 | 1994-12-22 | Ss受信機における逆拡散符号位相検出装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960027854A true KR960027854A (ko) | 1996-07-22 |
KR100199237B1 KR100199237B1 (ko) | 1999-06-15 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1019950072148A KR100199237B1 (ko) | 1994-12-22 | 1995-12-22 | 확산 스펙트럼형 수신기 내의 역확산 코드 위상 검출 장치 |
Country Status (5)
Country | Link |
---|---|
US (1) | US5812593A (ko) |
EP (1) | EP0718998A3 (ko) |
JP (1) | JP2605648B2 (ko) |
KR (1) | KR100199237B1 (ko) |
AU (1) | AU692006B2 (ko) |
Families Citing this family (82)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7929498B2 (en) | 1995-06-30 | 2011-04-19 | Interdigital Technology Corporation | Adaptive forward power control and adaptive reverse power control for spread-spectrum communications |
ZA965340B (en) | 1995-06-30 | 1997-01-27 | Interdigital Tech Corp | Code division multiple access (cdma) communication system |
US6831905B1 (en) | 1995-06-30 | 2004-12-14 | Interdigital Technology Corporation | Spread spectrum system assigning information signals to message-code signals |
US6816473B2 (en) | 1995-06-30 | 2004-11-09 | Interdigital Technology Corporation | Method for adaptive forward power control for spread-spectrum communications |
US7020111B2 (en) | 1996-06-27 | 2006-03-28 | Interdigital Technology Corporation | System for using rapid acquisition spreading codes for spread-spectrum communications |
US6885652B1 (en) | 1995-06-30 | 2005-04-26 | Interdigital Technology Corporation | Code division multiple access (CDMA) communication system |
FI100494B (fi) | 1995-11-20 | 1997-12-15 | Nokia Telecommunications Oy | Menetelmä vastaanottimen ohjaamiseksi ja vastaanotin |
JP3337613B2 (ja) * | 1996-03-05 | 2002-10-21 | シャープ株式会社 | スペクトル拡散通信システム |
US5903596A (en) * | 1996-05-16 | 1999-05-11 | Nakano; Takayuki | Spread spectrum demodulation unit |
CA2210582C (en) * | 1996-07-24 | 2001-01-30 | Ntt Mobile Communications Network Inc. | Method and apparatus for receiving cdma radio communication |
JP3447897B2 (ja) * | 1996-08-20 | 2003-09-16 | 松下電器産業株式会社 | Cdma無線通信装置 |
US6002709A (en) * | 1996-11-21 | 1999-12-14 | Dsp Group, Inc. | Verification of PN synchronization in a direct-sequence spread-spectrum digital communications system |
JPH10200506A (ja) * | 1997-01-06 | 1998-07-31 | Sony Corp | 受信装置及び受信方法、並びに無線システムの端末装置 |
US6289041B1 (en) * | 1997-02-11 | 2001-09-11 | Snaptrack, Inc. | Fast Acquisition, high sensitivity GPS receiver |
US6724738B1 (en) | 1997-02-27 | 2004-04-20 | Motorola Inc. | Method and apparatus for acquiring a pilot signal in a CDMA receiver |
US6144649A (en) * | 1997-02-27 | 2000-11-07 | Motorola, Inc. | Method and apparatus for acquiring a pilot signal in a CDMA receiver |
JP3242860B2 (ja) * | 1997-04-08 | 2001-12-25 | シャープ株式会社 | スペクトル直接拡散通信システムにおける相関同期回路 |
JP2853705B2 (ja) | 1997-05-07 | 1999-02-03 | 日本電気株式会社 | スペクトラム拡散通信受信機 |
JP2856249B2 (ja) * | 1997-06-24 | 1999-02-10 | 日本電気株式会社 | Cdma同期捕捉回路 |
JP3274388B2 (ja) * | 1997-07-25 | 2002-04-15 | 株式会社東芝 | Rake受信機とこのrake受信機を備えたスぺクトラム拡散通信装置 |
US6078570A (en) * | 1997-08-21 | 2000-06-20 | Nokia Mobile Phones Limited | Mobile assisted hard hand-off for a code division multiple access (CDMA) system |
US6144691A (en) * | 1997-09-30 | 2000-11-07 | Nokia Mobile Phones Limited | Method and apparatus for synchronizing to a direct sequence spread spectrum signal |
JP3793632B2 (ja) * | 1997-12-18 | 2006-07-05 | 松下電器産業株式会社 | セルサーチ方法及び移動局装置 |
JP3333454B2 (ja) * | 1997-12-20 | 2002-10-15 | 松下電器産業株式会社 | 相関検出装置及び相関検出装置の逆拡散符号切換え方法 |
JP3305639B2 (ja) * | 1997-12-24 | 2002-07-24 | 株式会社エヌ・ティ・ティ・ドコモ | 直接拡散cdma伝送方式におけるrake受信機 |
JP2894340B1 (ja) | 1998-03-04 | 1999-05-24 | 日本電気株式会社 | スペクトラム拡散通信方式 |
JP3484072B2 (ja) * | 1998-04-14 | 2004-01-06 | 株式会社日立国際電気 | 逆拡散回路 |
JP3260716B2 (ja) * | 1998-06-05 | 2002-02-25 | 松下電器産業株式会社 | 送信装置及びそれを用いた基地局装置 |
US6229842B1 (en) | 1998-07-16 | 2001-05-08 | Telefonaktiebolaget Lm Ericsson (Publ) | Adaptive path selection threshold setting for DS-CDMA receivers |
JP3031351B2 (ja) | 1998-09-24 | 2000-04-10 | 日本電気株式会社 | Cdma受信装置及びそれに用いるパス検出方法並びにその制御プログラムを記録した記録媒体 |
JP3031354B1 (ja) | 1998-09-30 | 2000-04-10 | 日本電気株式会社 | Cdma受信装置及びそのマルチパスのフィンガ割り当て方法並びにその制御プログラムを記録した記録媒体 |
US6560273B1 (en) * | 1998-10-07 | 2003-05-06 | Ericsson Inc. | Delay searcher and delay trackers interaction for new delays assignment to rake fingers |
JP3904754B2 (ja) | 1999-02-25 | 2007-04-11 | 富士通株式会社 | 符号分割多重通信における送信装置、受信装置及びその方法 |
WO2000052863A1 (fr) * | 1999-03-01 | 2000-09-08 | Fujitsu Limited | Recepteur amrc |
KR100294711B1 (ko) * | 1999-03-15 | 2001-07-12 | 서평원 | 최적의 파일럿 심볼을 이용한 프레임 동기 방법 |
US7012906B1 (en) * | 1999-03-15 | 2006-03-14 | Lg Information & Communications, Ltd. | Pilot signals for synchronization and/or channel estimation |
US6721299B1 (en) * | 1999-03-15 | 2004-04-13 | Lg Information & Communications, Ltd. | Pilot signals for synchronization and/or channel estimation |
US6791960B1 (en) | 1999-03-15 | 2004-09-14 | Lg Information And Communications, Ltd. | Pilot signals for synchronization and/or channel estimation |
US7643540B2 (en) * | 1999-03-15 | 2010-01-05 | Lg Electronics Inc. | Pilot signals for synchronization and/or channel estimation |
US7496132B2 (en) * | 1999-03-15 | 2009-02-24 | Kg Electronics Inc. | Pilot signals for synchronization and/or channel estimation |
US6704348B2 (en) | 2001-05-18 | 2004-03-09 | Global Locate, Inc. | Method and apparatus for computing signal correlation at multiple resolutions |
JP3344478B2 (ja) * | 1999-07-16 | 2002-11-11 | 日本電気株式会社 | Cdmaセルラシステムにおけるパスサーチ回路 |
JP3329379B2 (ja) * | 1999-09-09 | 2002-09-30 | 日本電気株式会社 | 周波数制御方法および受信機 |
DE69933949T2 (de) * | 1999-09-14 | 2007-07-12 | Fujitsu Ltd., Kawasaki | Cdma-empfänger |
JP3961828B2 (ja) | 1999-09-22 | 2007-08-22 | 富士通株式会社 | 送信電力制御装置 |
JP3279297B2 (ja) * | 1999-09-24 | 2002-04-30 | 日本電気株式会社 | Cdma移動通信受信方式におけるサーチ方法および受信装置 |
CN100423521C (zh) * | 1999-11-08 | 2008-10-01 | 三洋电机株式会社 | 无线接收系统及同步检测方法 |
JP3943305B2 (ja) * | 2000-01-19 | 2007-07-11 | 三菱電機株式会社 | スペクトル拡散受信装置、およびスペクトル拡散受信方法 |
JP3468189B2 (ja) | 2000-02-02 | 2003-11-17 | 日本電気株式会社 | パターン生成回路及びそれを用いたマルチパス検出回路並びにそのマルチパス検出方法 |
JP2001223671A (ja) * | 2000-02-14 | 2001-08-17 | Mitsubishi Electric Corp | フェージングピッチ検出装置およびこれを用いた携帯情報端末 |
JP2001244849A (ja) * | 2000-02-29 | 2001-09-07 | Matsushita Electric Ind Co Ltd | 通信端末装置及びセルサーチ方法 |
US6873648B1 (en) * | 2000-03-02 | 2005-03-29 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for fast detection of locations of path rays in a receiver having multiple time references |
JP3732707B2 (ja) * | 2000-03-16 | 2006-01-11 | 富士通株式会社 | 加入者側通信装置における再同期制御装置および再同期方法 |
US7224719B1 (en) | 2000-03-31 | 2007-05-29 | Qualcomm, Incorporated | Fast acquisition of a pilot signal in a wireless communication device |
JP3884896B2 (ja) * | 2000-04-06 | 2007-02-21 | 株式会社エヌ・ティ・ティ・ドコモ | 通信品質取得装置および通信品質取得方法 |
US6925108B1 (en) * | 2000-05-26 | 2005-08-02 | Freescale Semiconductor, Inc. | Ultrawide bandwidth system and method for fast synchronization |
JP2002026768A (ja) * | 2000-07-07 | 2002-01-25 | Nec Corp | 通信装置 |
JP3441431B2 (ja) * | 2000-11-09 | 2003-09-02 | 日本電気株式会社 | Rake受信機及び受信方法 |
JP3428637B2 (ja) * | 2000-11-27 | 2003-07-22 | 日本電気株式会社 | Cdma受信機のマルチパス検出方法および回路 |
US7995682B2 (en) | 2001-05-18 | 2011-08-09 | Broadcom Corporation | Method and apparatus for performing signal processing using historical correlation data |
US6819707B2 (en) | 2001-05-18 | 2004-11-16 | Global Locate, Inc. | Method and apparatus for performing signal correlation using historical correlation data |
US6891880B2 (en) | 2001-05-18 | 2005-05-10 | Global Locate, Inc. | Method and apparatus for performing signal correlation |
US7006556B2 (en) | 2001-05-18 | 2006-02-28 | Global Locate, Inc. | Method and apparatus for performing signal correlation at multiple resolutions to mitigate multipath interference |
US7190712B2 (en) * | 2001-05-18 | 2007-03-13 | Global Locate, Inc | Method and apparatus for performing signal correlation |
US7769076B2 (en) | 2001-05-18 | 2010-08-03 | Broadcom Corporation | Method and apparatus for performing frequency synchronization |
US7567636B2 (en) * | 2001-05-18 | 2009-07-28 | Global Locate, Inc. | Method and apparatus for performing signal correlation using historical correlation data |
US7065129B2 (en) * | 2001-06-29 | 2006-06-20 | Qualcomm, Inc. | Acquisition of a gated pilot by avoiding partial correlation peaks |
JP3753637B2 (ja) | 2001-08-30 | 2006-03-08 | Necマイクロシステム株式会社 | Cdma受信装置におけるパス検出方法及びその装置並びに制御プログラムを記録した記録媒体 |
JP3813490B2 (ja) | 2001-10-30 | 2006-08-23 | 富士通株式会社 | スペクトラム拡散レイク受信機 |
US7586837B2 (en) * | 2001-12-14 | 2009-09-08 | Qualcomm Incorporated | Acquisition of a gated pilot signal |
JP3726897B2 (ja) * | 2002-02-27 | 2005-12-14 | ソニー株式会社 | Gps受信機およびgps衛星信号の受信方法 |
US7050485B2 (en) * | 2002-05-07 | 2006-05-23 | Koninklijke Philips Electronics N.V. | Iterative CDMA phase and frequency acquisition |
WO2004006480A1 (fr) * | 2002-07-03 | 2004-01-15 | Linkair Communications,Inc. | Procede et appareil de reperage continu de codes d'etalement de spectre en mode cdma |
WO2004025861A1 (ja) * | 2002-09-13 | 2004-03-25 | Mitsubishi Denki Kabushiki Kaisha | Rake受信機 |
US7161977B1 (en) * | 2003-01-28 | 2007-01-09 | Trimble Navigation Limited | Receiver having a ratio-based signal acquisition method |
US6879813B2 (en) * | 2003-01-30 | 2005-04-12 | Interdigital Technology Corporation | Link-quality estimation method and components for multi-user wireless communication systems |
WO2005076492A1 (ja) * | 2004-02-03 | 2005-08-18 | Matsushita Electric Industrial Co., Ltd. | Rake受信装置およびrake受信方法 |
US20050180558A1 (en) * | 2004-02-17 | 2005-08-18 | Sarnoff Corporation | Method and apparatus for equalizing strong pre-echoes in a multi-path communication channel |
DE102007053402A1 (de) * | 2007-11-09 | 2009-05-14 | Rohde & Schwarz Gmbh & Co. Kg | Synchronisierung von Empfangssymbolen bei OFDM |
JP4920609B2 (ja) * | 2008-01-24 | 2012-04-18 | シャープ株式会社 | 無線通信装置 |
JP5599677B2 (ja) * | 2010-08-18 | 2014-10-01 | ラピスセミコンダクタ株式会社 | ダイバシティ受信装置及びダイバシティ受信方法 |
JP5465131B2 (ja) * | 2010-08-18 | 2014-04-09 | 三菱電機株式会社 | 符号推定装置および符号推定方法 |
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DE3743732C2 (de) * | 1987-12-23 | 1994-12-01 | Ant Nachrichtentech | Verfahren zur Synchronisierung eines Codewortes mit einem empfangenen spektral gespreizten Signal |
GB2268364B (en) * | 1992-06-25 | 1995-10-11 | Roke Manor Research | Improvements in or relating to radio communication systems |
JP2771757B2 (ja) * | 1992-06-29 | 1998-07-02 | 三菱電機株式会社 | スペクトル拡散通信用受信装置のデータ復調回路 |
JP2689890B2 (ja) * | 1993-12-30 | 1997-12-10 | 日本電気株式会社 | スペクトラム拡散受信機 |
JPH07245597A (ja) * | 1994-03-02 | 1995-09-19 | Pioneer Electron Corp | スペクトラム拡散通信方法及び送受信装置 |
US5577022A (en) * | 1994-11-22 | 1996-11-19 | Qualcomm Incorporated | Pilot signal searching technique for a cellular communications system |
-
1994
- 1994-12-22 JP JP33617494A patent/JP2605648B2/ja not_active Expired - Fee Related
-
1995
- 1995-12-18 EP EP19950120004 patent/EP0718998A3/en not_active Withdrawn
- 1995-12-20 US US08/575,579 patent/US5812593A/en not_active Expired - Fee Related
- 1995-12-21 AU AU40641/95A patent/AU692006B2/en not_active Ceased
- 1995-12-22 KR KR1019950072148A patent/KR100199237B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JP2605648B2 (ja) | 1997-04-30 |
KR100199237B1 (ko) | 1999-06-15 |
AU692006B2 (en) | 1998-05-28 |
US5812593A (en) | 1998-09-22 |
EP0718998A3 (en) | 1998-03-04 |
EP0718998A2 (en) | 1996-06-26 |
AU4064195A (en) | 1996-06-27 |
JPH08181636A (ja) | 1996-07-12 |
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