ATE158906T1 - Selbsttätige antennenabstimmung - Google Patents

Selbsttätige antennenabstimmung

Info

Publication number
ATE158906T1
ATE158906T1 AT89122239T AT89122239T ATE158906T1 AT E158906 T1 ATE158906 T1 AT E158906T1 AT 89122239 T AT89122239 T AT 89122239T AT 89122239 T AT89122239 T AT 89122239T AT E158906 T1 ATE158906 T1 AT E158906T1
Authority
AT
Austria
Prior art keywords
varactor
signal
listening interval
during
maximum
Prior art date
Application number
AT89122239T
Other languages
English (en)
Inventor
Garold B Gaskill
Larry H Mukai
Original Assignee
Seiko Corp
Seiko Epson Corp
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
Application filed by Seiko Corp, Seiko Epson Corp filed Critical Seiko Corp
Application granted granted Critical
Publication of ATE158906T1 publication Critical patent/ATE158906T1/de

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
    • H03J1/0033—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor for voltage synthesis with a D/A converter
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/18—Automatic scanning over a band of frequencies
    • H03J7/20—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
    • H03J7/28—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using counters or frequency dividers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Circuits Of Receivers In General (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Structure Of Receivers (AREA)
  • Mobile Radio Communication Systems (AREA)
AT89122239T 1988-12-05 1989-12-01 Selbsttätige antennenabstimmung ATE158906T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/279,952 US5136719A (en) 1988-12-05 1988-12-05 Automatic antenna tubing method and apparatus

Publications (1)

Publication Number Publication Date
ATE158906T1 true ATE158906T1 (de) 1997-10-15

Family

ID=23071040

Family Applications (1)

Application Number Title Priority Date Filing Date
AT89122239T ATE158906T1 (de) 1988-12-05 1989-12-01 Selbsttätige antennenabstimmung

Country Status (6)

Country Link
US (2) US5136719A (de)
EP (1) EP0372430B1 (de)
JP (1) JP3127229B2 (de)
AT (1) ATE158906T1 (de)
CA (1) CA2004542C (de)
DE (1) DE68928359T2 (de)

Families Citing this family (124)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5136719A (en) * 1988-12-05 1992-08-04 Seiko Corp. Automatic antenna tubing method and apparatus
US6055420A (en) * 1990-06-19 2000-04-25 Bose Corproation Antenna system having a high Q circuit
CA2061385C (en) * 1991-02-19 1996-12-24 Kazuhiro Kudoh Radio pager
WO1992020117A1 (fr) * 1991-05-09 1992-11-12 Seiko Epson Corporation Antenne et petit appareil radio portatif
US5673054A (en) * 1991-05-09 1997-09-30 Seiko Epson Corporation Antenna and miniature portable wireless transceiver
US5589840A (en) * 1991-11-05 1996-12-31 Seiko Epson Corporation Wrist-type wireless instrument and antenna apparatus
US5451839A (en) * 1993-01-12 1995-09-19 Rappaport; Theodore S. Portable real time cellular telephone and pager network system monitor
US5483688A (en) * 1993-01-22 1996-01-09 Seiko Communications Holding N.V. Adaptive automatic antenna tuning method and apparatus
EP0616384B1 (de) * 1993-03-17 2000-05-31 Seiko Epson Corporation Antenne und diese enthaltendes Gerät
US5757326A (en) * 1993-03-29 1998-05-26 Seiko Epson Corporation Slot antenna device and wireless apparatus employing the antenna device
GB9308168D0 (en) * 1993-04-20 1993-06-02 Madge Network Limited Impedance matching
US6771617B1 (en) * 1993-06-17 2004-08-03 Gilat Satellite Networks, Ltd. Frame relay protocol-based multiplex switching scheme for satellite mesh network
US5434850A (en) 1993-06-17 1995-07-18 Skydata Corporation Frame relay protocol-based multiplex switching scheme for satellite
EP0765560A1 (de) 1994-06-08 1997-04-02 Hughes Aircraft Company Verfahren und vorrichtung zum hybridnetzwerkzugriff
US6701370B1 (en) * 1994-06-08 2004-03-02 Hughes Electronics Corporation Network system with TCP/IP protocol spoofing
US6473793B1 (en) 1994-06-08 2002-10-29 Hughes Electronics Corporation Method and apparatus for selectively allocating and enforcing bandwidth usage requirements on network users
JP3417083B2 (ja) * 1994-10-04 2003-06-16 セイコーエプソン株式会社 携帯用無線機
DE4438286C2 (de) * 1994-10-26 2002-09-12 Siemens Ag System zur kontaktlosen Energie- und Datenübertragung
US5652795A (en) 1994-11-14 1997-07-29 Hughes Electronics Method and apparatus for an adapter card providing conditional access in a communication system
US5699384A (en) * 1994-11-14 1997-12-16 Hughes Electronics Apparatus and method for satellite receiver computer adaptor card
US5682147A (en) * 1995-01-24 1997-10-28 Motorola, Inc. Method and apparatus for selecting a receive frequency in a communication receiver
US5600312A (en) * 1995-01-24 1997-02-04 Motorola, Inc. Messaging system and method having roaming capability and controlled group messaging
US5610919A (en) * 1995-01-24 1997-03-11 Motorola, Inc. Network identification information placement architecture for messaging system having roaming capability
US5625351A (en) * 1995-01-24 1997-04-29 Motorola, Inc. Messaging system having roaming capability
US5734963A (en) * 1995-06-06 1998-03-31 Flash Comm, Inc. Remote initiated messaging apparatus and method in a two way wireless data communications network
AU705213B2 (en) * 1995-06-06 1999-05-20 Terion, Inc. Determining propagating and clear frequency in wireless data communications network
US5765112A (en) * 1995-06-06 1998-06-09 Flash Comm. Inc. Low cost wide area network for data communication using outbound message specifying inbound message time and frequency
US5589844A (en) * 1995-06-06 1996-12-31 Flash Comm, Inc. Automatic antenna tuner for low-cost mobile radio
US5970398A (en) * 1996-07-30 1999-10-19 Micron Communications, Inc. Radio frequency antenna with current controlled sensitivity
US5745844A (en) * 1996-10-04 1998-04-28 Motorola, Inc. Receiver control in a communication device by antenna de-tuning in strong signal conditions, and method therefor
US5786991A (en) * 1996-11-01 1998-07-28 Ericsson Inc. Programmable voltage source
US6081700A (en) * 1996-12-17 2000-06-27 Motorola, Inc. Radio having a self-tuning antenna and method thereof
US5991609A (en) * 1996-12-26 1999-11-23 Delco Electronics Corporation Low cost digital automatic alignment method and apparatus
JP3360004B2 (ja) * 1997-03-20 2002-12-24 松下電器産業株式会社 無線受信装置
JPH10276112A (ja) * 1997-03-28 1998-10-13 Sanyo Electric Co Ltd ラジオ受信機
US6658239B1 (en) 1997-05-09 2003-12-02 Micrel Incorporated Fully integrated ALL-CMOS AM transmitter with automatic antenna tuning
US6253068B1 (en) 1997-05-09 2001-06-26 Micrel, Incorporated Fully integrated all-CMOS AM transmitter with automatic antenna tuning
JP2000036702A (ja) * 1998-07-21 2000-02-02 Hitachi Ltd 無線端末
US6252456B1 (en) * 1999-07-29 2001-06-26 Motorola, Inc. Power amplifier load controller and method for controlling a power amplifier load
EP1301960A1 (de) 2000-07-20 2003-04-16 Paratek Microwave, Inc. Abstimmbare mikrowellenanordnungen mit selbsteinstellender anpassungsschaltung
US7865154B2 (en) * 2000-07-20 2011-01-04 Paratek Microwave, Inc. Tunable microwave devices with auto-adjusting matching circuit
US8744384B2 (en) 2000-07-20 2014-06-03 Blackberry Limited Tunable microwave devices with auto-adjusting matching circuit
US8064188B2 (en) 2000-07-20 2011-11-22 Paratek Microwave, Inc. Optimized thin film capacitors
JP2002232319A (ja) * 2001-02-01 2002-08-16 Fujitsu Ltd 情報処理装置および通信監視制御プログラム
KR20020096008A (ko) * 2001-06-19 2002-12-28 엘지전자 주식회사 안테나 정합 회로망
US7349691B2 (en) * 2001-07-03 2008-03-25 Microsoft Corporation System and apparatus for performing broadcast and localcast communications
US6950642B2 (en) * 2001-07-03 2005-09-27 Microsoft Corporation System and method for reducing noise in a recording receiver
US6999545B2 (en) * 2001-10-26 2006-02-14 Microsoft Corporation Method and system for undersampled symbol synchronization
US6907234B2 (en) * 2001-10-26 2005-06-14 Microsoft Corporation System and method for automatically tuning an antenna
US6970465B2 (en) * 2001-10-26 2005-11-29 Microsoft Corporation System and method for locating a data frame within a transmitted data stream
US8339265B2 (en) 2002-01-09 2012-12-25 Sensormatic Electronics, Llc. Method of assigning and deducing the location of articles detected by multiple RFID antennae
WO2003061060A2 (en) * 2002-01-09 2003-07-24 Meadwestvaco Corporation Intelligent station using multiple rf antennae and inventory control system and method incorporating same
US7190933B2 (en) * 2002-11-01 2007-03-13 Intergration Associates Inc. Method and apparatus for automatic tuning of a resonant loop antenna in a transceiver circuit
US7058372B1 (en) 2002-11-01 2006-06-06 Integration Associates Inc. Method and apparatus for automatic tuning of a resonant loop antenna
JP3970751B2 (ja) * 2002-11-06 2007-09-05 新潟精密株式会社 ダブルコンバージョン方式の受信機
US7043214B2 (en) * 2002-12-11 2006-05-09 Microsoft Corporation Tower discovery and failover
US7228119B2 (en) * 2002-12-30 2007-06-05 Motorola, Inc. Apparatus and method for a radio frequency (RF) receiver front end pre-selector tuning for improving the reduction in intermodulation distortion (IMD)
US6940467B2 (en) * 2003-01-10 2005-09-06 Atmel Germany Gmbh Circuit arrangement and method for deriving electrical power from an electromagnetic field
JP2004282425A (ja) * 2003-03-17 2004-10-07 Casio Comput Co Ltd 電波受信装置、電波時計及び同調容量設定方法
DE102004037637A1 (de) * 2004-08-02 2006-03-16 Deutsche Thomson-Brandt Gmbh Empfängerschaltung und Steuerverfahren
CN102946625A (zh) * 2005-03-03 2013-02-27 传感电子有限责任公司 使用智能网络和rfid信号路由器的设备和方法
DE602006020707D1 (de) 2005-04-08 2011-04-28 Nxp Bv Rfid-lesegerät mit antenne und betriebsverfahren dafür
US9406444B2 (en) 2005-11-14 2016-08-02 Blackberry Limited Thin film capacitors
US7711337B2 (en) 2006-01-14 2010-05-04 Paratek Microwave, Inc. Adaptive impedance matching module (AIMM) control architectures
US8125399B2 (en) 2006-01-14 2012-02-28 Paratek Microwave, Inc. Adaptively tunable antennas incorporating an external probe to monitor radiated power
US8325097B2 (en) * 2006-01-14 2012-12-04 Research In Motion Rf, Inc. Adaptively tunable antennas and method of operation therefore
US8316156B2 (en) * 2006-02-17 2012-11-20 Intel-Ne, Inc. Method and apparatus for interfacing device drivers to single multi-function adapter
EP1997224A1 (de) * 2006-03-09 2008-12-03 Nxp B.V. Funkempfänger
JP2007318585A (ja) * 2006-05-29 2007-12-06 Alps Electric Co Ltd デジタル信号受信装置
EP1876708B1 (de) * 2006-07-06 2008-09-10 Dibcom Integrierte Abstimmschaltung mit Antennenkontrolleinheit
US7215600B1 (en) * 2006-09-12 2007-05-08 Timex Group B.V. Antenna arrangement for an electronic device and an electronic device including same
JP2008085422A (ja) * 2006-09-26 2008-04-10 Niigata Seimitsu Kk Ａｍ用のループアンテナ入力回路およびこれを用いたａｍラジオ受信機
US7689188B2 (en) * 2006-09-29 2010-03-30 Broadcom Corporation Method and system for dynamically tuning and calibrating an antenna using antenna hopping
US7714676B2 (en) 2006-11-08 2010-05-11 Paratek Microwave, Inc. Adaptive impedance matching apparatus, system and method
US7535312B2 (en) * 2006-11-08 2009-05-19 Paratek Microwave, Inc. Adaptive impedance matching apparatus, system and method with improved dynamic range
US8299867B2 (en) * 2006-11-08 2012-10-30 Research In Motion Rf, Inc. Adaptive impedance matching module
US10164611B2 (en) 2006-11-18 2018-12-25 Rfmicron, Inc. Method and apparatus for sensing environmental conditions
US10715209B2 (en) 2006-11-18 2020-07-14 RF Micron, Inc. Computing device for processing environmental sensed conditions
US10149177B2 (en) 2006-11-18 2018-12-04 Rfmicron, Inc. Wireless sensor including an RF signal circuit
US12073272B2 (en) 2006-11-18 2024-08-27 Rfmicron, Inc. Generating a response by a radio frequency identification (RFID) tag within a field strength shell of interest
US11817637B2 (en) 2006-11-18 2023-11-14 Rfmicron, Inc. Radio frequency identification (RFID) moisture tag(s) and sensors with extended sensing via capillaries
US12391076B2 (en) 2006-11-18 2025-08-19 Rfmicron, Inc. Pressure based wireless sensor and applications thereof
US20080129610A1 (en) * 2006-12-01 2008-06-05 Texas Instruments Incorporated Adaptive antenna matching for portable radio operating at VHF with single-chip based implementation
US20080158076A1 (en) * 2006-12-28 2008-07-03 Broadcom Corporation Dynamically adjustable narrow bandwidth antenna for wide band systems
JP4680219B2 (ja) * 2007-03-16 2011-05-11 トヨタ自動車株式会社 無線受信装置
US7917104B2 (en) 2007-04-23 2011-03-29 Paratek Microwave, Inc. Techniques for improved adaptive impedance matching
US20080268803A1 (en) * 2007-04-25 2008-10-30 Guillaume Blin Techniques for antenna retuning utilizing receive power information
US7825867B2 (en) * 2007-04-26 2010-11-02 Round Rock Research, Llc Methods and systems of changing antenna polarization
US8213886B2 (en) 2007-05-07 2012-07-03 Paratek Microwave, Inc. Hybrid techniques for antenna retuning utilizing transmit and receive power information
US7936268B2 (en) * 2007-08-31 2011-05-03 Round Rock Research, Llc Selectively coupling to feed points of an antenna system
US7991363B2 (en) 2007-11-14 2011-08-02 Paratek Microwave, Inc. Tuning matching circuits for transmitter and receiver bands as a function of transmitter metrics
JP5016456B2 (ja) * 2007-11-27 2012-09-05 株式会社慶洋エンジニアリング 地上デジタル放送受信用アンテナ及び地上デジタル放送受信用アンテナ装置
US8421267B2 (en) * 2008-03-10 2013-04-16 Qualcomm, Incorporated Packaging and details of a wireless power device
US8115637B2 (en) 2008-06-03 2012-02-14 Micron Technology, Inc. Systems and methods to selectively connect antennas to receive and backscatter radio frequency signals
JP4557086B2 (ja) * 2008-06-24 2010-10-06 カシオ計算機株式会社 電波受信装置
US20100062728A1 (en) * 2008-09-05 2010-03-11 Motorola, Inc, Tuning an electrically small antenna
US8072285B2 (en) 2008-09-24 2011-12-06 Paratek Microwave, Inc. Methods for tuning an adaptive impedance matching network with a look-up table
US8067858B2 (en) 2008-10-14 2011-11-29 Paratek Microwave, Inc. Low-distortion voltage variable capacitor assemblies
DE102008053296A1 (de) * 2008-10-27 2010-04-29 Atmel Automotive Gmbh Schaltung für eine Schleifenantenne und Verfahren zur Abstimmung
US8472904B2 (en) * 2009-03-30 2013-06-25 The Charles Stark Draper Laboratory, Inc. Antenna with integrated tuning detection elements
US7996035B2 (en) * 2009-08-17 2011-08-09 Sony Corporation Matching circuit for adaptive impedance matching in radio
US8472888B2 (en) 2009-08-25 2013-06-25 Research In Motion Rf, Inc. Method and apparatus for calibrating a communication device
US9026062B2 (en) * 2009-10-10 2015-05-05 Blackberry Limited Method and apparatus for managing operations of a communication device
US8803631B2 (en) 2010-03-22 2014-08-12 Blackberry Limited Method and apparatus for adapting a variable impedance network
EP2561621A4 (de) 2010-04-20 2016-10-05 Blackberry Ltd Verfahren und vorrichtung zur verwaltung von interferenzen in einer kommunikationsvorrichtung
US9379454B2 (en) 2010-11-08 2016-06-28 Blackberry Limited Method and apparatus for tuning antennas in a communication device
US8712340B2 (en) 2011-02-18 2014-04-29 Blackberry Limited Method and apparatus for radio antenna frequency tuning
US8655286B2 (en) 2011-02-25 2014-02-18 Blackberry Limited Method and apparatus for tuning a communication device
US8594584B2 (en) 2011-05-16 2013-11-26 Blackberry Limited Method and apparatus for tuning a communication device
US8626083B2 (en) 2011-05-16 2014-01-07 Blackberry Limited Method and apparatus for tuning a communication device
WO2013022826A1 (en) 2011-08-05 2013-02-14 Research In Motion Rf, Inc. Method and apparatus for band tuning in a communication device
US8948889B2 (en) 2012-06-01 2015-02-03 Blackberry Limited Methods and apparatus for tuning circuit components of a communication device
US9853363B2 (en) 2012-07-06 2017-12-26 Blackberry Limited Methods and apparatus to control mutual coupling between antennas
US9246223B2 (en) 2012-07-17 2016-01-26 Blackberry Limited Antenna tuning for multiband operation
US9413066B2 (en) 2012-07-19 2016-08-09 Blackberry Limited Method and apparatus for beam forming and antenna tuning in a communication device
US9350405B2 (en) 2012-07-19 2016-05-24 Blackberry Limited Method and apparatus for antenna tuning and power consumption management in a communication device
US9362891B2 (en) 2012-07-26 2016-06-07 Blackberry Limited Methods and apparatus for tuning a communication device
US10404295B2 (en) 2012-12-21 2019-09-03 Blackberry Limited Method and apparatus for adjusting the timing of radio antenna tuning
US9374113B2 (en) 2012-12-21 2016-06-21 Blackberry Limited Method and apparatus for adjusting the timing of radio antenna tuning
US9893715B2 (en) 2013-12-09 2018-02-13 Shure Acquisition Holdings, Inc. Adaptive self-tunable antenna system and method
WO2015158374A1 (en) 2014-04-16 2015-10-22 Sonova Ag Portable communication device with tunable antenna and method of operating such portable communication device
US10746682B2 (en) 2014-10-08 2020-08-18 Rfmicron, Inc. Wireless sensor with multiple sensing options
US9438319B2 (en) 2014-12-16 2016-09-06 Blackberry Limited Method and apparatus for antenna selection
US10484112B2 (en) * 2017-02-24 2019-11-19 Apple Inc. Dynamically adjustable antennas for wearable devices

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3519939A (en) * 1965-09-21 1970-07-07 Matsushita Electric Industrial Co Ltd Automatic tuning receiver with detuning means
US3600684A (en) * 1969-05-15 1971-08-17 Motorola Inc Overload compensation circuit for antenna tuning system
US4381566A (en) * 1979-06-14 1983-04-26 Matsushita Electric Industrial Co., Ltd. Electronic tuning antenna system
US4334230A (en) * 1979-07-09 1982-06-08 Matsushita Electric Industrial Co. Ltd. Directivity-controllable antenna system
US4339827A (en) * 1980-11-25 1982-07-13 Rca Corporation Automatic tuning circuit arrangement with switched impedances
DE3115291C2 (de) * 1981-04-15 1983-07-21 Becker Autoradiowerk Gmbh, 7516 Karlsbad "Abstimmschaltung für Hochfrequenzempfänger"
US4427980A (en) * 1981-10-13 1984-01-24 Motorola, Inc. Encoder for transmitted message activation code
US4431991A (en) * 1981-10-13 1984-02-14 Motorola, Inc. Encoder for transmitted message deactivation code
CA1249052A (en) * 1984-11-08 1989-01-17 Junzo Ohe Automobile antenna system
US4713808A (en) * 1985-11-27 1987-12-15 A T & E Corporation Watch pager system and communication protocol
JPS61113437U (de) * 1984-12-26 1986-07-17
US4837852A (en) * 1985-06-17 1989-06-06 Toko, Inc. Electronic tuning circuit for AM receiver which is easy to effect tracking adjustment
US4713631A (en) * 1986-01-06 1987-12-15 Motorola Inc. Varactor tuning circuit having plural selectable bias voltages
GB2201266A (en) * 1986-12-23 1988-08-24 Upperpace Limited A radio paging watch
EP0341239B1 (de) * 1987-01-02 1993-04-28 Motorola, Inc. Gerät zur abstimmung einer antenne für personenkommunikationsanlagen
EP0341238B1 (de) * 1987-01-02 1993-12-08 Motorola, Inc. System zur automatischen abstimmung einer antenne für tragbare kommunikationsanlagen
US4851830A (en) * 1987-10-20 1989-07-25 Telefind Corp. Paging receiver with continuously tunable antenna
US4845485A (en) * 1987-12-29 1989-07-04 Motorola, Inc. Combined radio pager/timepiece apparatus with receiver desensitization protection
US5047764A (en) * 1988-02-22 1991-09-10 Telefind Corporation Paging system with dynamically programmable reception frequencies
US4921465A (en) * 1988-03-31 1990-05-01 Rca Licensing Corporation Varactor tuned UHF RF signal input circuit
US4885802A (en) * 1988-06-30 1989-12-05 At&E Corporation Wristwatch receiver architecture
US5136719A (en) * 1988-12-05 1992-08-04 Seiko Corp. Automatic antenna tubing method and apparatus

Also Published As

Publication number Publication date
EP0372430A3 (de) 1991-07-10
HK1002048A1 (en) 1998-07-24
JP3127229B2 (ja) 2001-01-22
CA2004542C (en) 1999-03-09
CA2004542A1 (en) 1990-06-05
EP0372430B1 (de) 1997-10-01
EP0372430A2 (de) 1990-06-13
DE68928359T2 (de) 1998-01-15
US5301358A (en) 1994-04-05
JPH02202240A (ja) 1990-08-10
DE68928359D1 (de) 1997-11-06
US5136719A (en) 1992-08-04

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