DE60313812D1 - Methode zur erzeugung eines oszillator-taktsignales - Google Patents

Methode zur erzeugung eines oszillator-taktsignales

Info

Publication number
DE60313812D1
DE60313812D1 DE60313812T DE60313812T DE60313812D1 DE 60313812 D1 DE60313812 D1 DE 60313812D1 DE 60313812 T DE60313812 T DE 60313812T DE 60313812 T DE60313812 T DE 60313812T DE 60313812 D1 DE60313812 D1 DE 60313812D1
Authority
DE
Germany
Prior art keywords
clock
controlled oscillator
synchronizer
locked loop
analog
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.)
Expired - Lifetime
Application number
DE60313812T
Other languages
English (en)
Other versions
DE60313812T2 (de
DE60313812T3 (de
Inventor
Christopher Julian Travis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of DE60313812D1 publication Critical patent/DE60313812D1/de
Publication of DE60313812T2 publication Critical patent/DE60313812T2/de
Publication of DE60313812T3 publication Critical patent/DE60313812T3/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/02—Digital function generators
    • G06F1/025—Digital function generators for functions having two-valued amplitude, e.g. Walsh functions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop
    • H04L7/0331—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop with a digital phase-locked loop [PLL] processing binary samples, e.g. add/subtract logic for correction of receiver clock
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/027—Generators characterised by the type of circuit or by the means used for producing pulses by the use of logic circuits, with internal or external positive feedback
    • H03K3/03—Astable circuits
    • H03K3/0307—Stabilisation of output, e.g. using crystal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/07—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop using several loops, e.g. for redundant clock signal generation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/083—Details of the phase-locked loop the reference signal being additionally directly applied to the generator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • H03L7/087—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using at least two phase detectors or a frequency and phase detector in the loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
    • H03L7/0991—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop the oscillator being a digital oscillator, e.g. composed of a fixed oscillator followed by a variable frequency divider
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
    • H03L7/0991—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop the oscillator being a digital oscillator, e.g. composed of a fixed oscillator followed by a variable frequency divider
    • H03L7/0994—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop the oscillator being a digital oscillator, e.g. composed of a fixed oscillator followed by a variable frequency divider comprising an accumulator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
    • H03L7/0995—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop the oscillator comprising a ring oscillator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/22—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using more than one loop
    • H03L7/23—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using more than one loop with pulse counters or frequency dividers
    • H03L7/235—Nested phase locked loops
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2211/00—Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
    • G06F2211/902—Spectral purity improvement for digital function generators by adding a dither signal, e.g. noise

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Manipulation Of Pulses (AREA)
  • Electric Clocks (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Devices For Supply Of Signal Current (AREA)
DE60313812.8T 2003-04-02 2003-04-02 Methode zur erzeugung eines oszillator-taktsignales Expired - Lifetime DE60313812T3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/GB2003/001441 WO2004088845A1 (en) 2003-04-02 2003-04-02 Method of establishing an oscillator clock signal
EP03712441.9A EP1611684B3 (de) 2003-04-02 2003-04-02 Methode zur erzeugung eines oszillator-taktsignales

Publications (3)

Publication Number Publication Date
DE60313812D1 true DE60313812D1 (de) 2007-06-21
DE60313812T2 DE60313812T2 (de) 2008-01-24
DE60313812T3 DE60313812T3 (de) 2019-04-11

Family

ID=33104544

Family Applications (2)

Application Number Title Priority Date Filing Date
DE60331698T Expired - Lifetime DE60331698D1 (de) 2003-04-02 2003-04-02 Numerisch gesteuerter Oszillator und Verfahren zum Erzeugen eines Ereignis-Taktes
DE60313812.8T Expired - Lifetime DE60313812T3 (de) 2003-04-02 2003-04-02 Methode zur erzeugung eines oszillator-taktsignales

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE60331698T Expired - Lifetime DE60331698D1 (de) 2003-04-02 2003-04-02 Numerisch gesteuerter Oszillator und Verfahren zum Erzeugen eines Ereignis-Taktes

Country Status (6)

Country Link
US (6) US7495516B2 (de)
EP (2) EP1811670B1 (de)
AT (2) ATE460774T1 (de)
AU (1) AU2003217053A1 (de)
DE (2) DE60331698D1 (de)
WO (1) WO2004088845A1 (de)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003217053A1 (en) 2003-04-02 2004-10-25 Christopher Julian Travis Method of establishing an oscillator clock signal
GB2409383B (en) 2003-12-17 2006-06-21 Wolfson Ltd Clock synchroniser
US7421464B2 (en) * 2004-09-30 2008-09-02 Motorola, Inc. System and method for introducing dither for reducing spurs in digital-to-time converter direct digital synthesis
US7558358B1 (en) 2004-10-13 2009-07-07 Cirrus Logic, Inc. Method and apparatus for generating a clock signal according to an ideal frequency ratio
DE102006019475B4 (de) * 2006-04-26 2008-08-28 Nokia Siemens Networks Gmbh & Co.Kg Verfahren zur Synchronisation von Baugruppen einer Basisstation
US7680236B1 (en) 2006-09-25 2010-03-16 Cirrus Logic, Inc. Hybrid analog/digital phase-lock loop for low-jitter synchronization
US7599462B2 (en) 2006-09-25 2009-10-06 Cirrus Logic, Inc. Hybrid analog/digital phase-lock loop with high-level event synchronization
WO2008077411A2 (en) * 2006-12-22 2008-07-03 The Tc Group A/S Method of extracting data from a serial data stream
US7746972B1 (en) 2007-03-22 2010-06-29 Cirrus Logic, Inc. Numerically-controlled phase-lock loop with input timing reference-dependent ratio adjustment
US8193866B2 (en) * 2007-10-16 2012-06-05 Mediatek Inc. All-digital phase-locked loop
US8824511B2 (en) * 2008-03-27 2014-09-02 Nec Corporation Clock synchronization system, node, clock synchronization method, and program
US7848266B2 (en) * 2008-07-25 2010-12-07 Analog Devices, Inc. Frequency synthesizers for wireless communication systems
US7890279B1 (en) * 2008-08-11 2011-02-15 Altera Corporation Jitter estimation in phase-locked loops
US8254732B2 (en) * 2009-03-11 2012-08-28 Citizen Holdings Co., Ltd. Phase modulator and optical modulation device
US8355478B1 (en) 2009-05-29 2013-01-15 Honeywell International Inc. Circuit for aligning clock to parallel data
EP2467976B1 (de) 2009-08-21 2019-10-09 Aviat Networks, Inc. Synchronisationsverteilung in mikrowellen-backhaul-netzwerken
US8188796B2 (en) * 2010-07-19 2012-05-29 Analog Devices, Inc. Digital phase-locked loop clock system
US8909509B2 (en) 2010-10-01 2014-12-09 Rockwell Automation Technologies, Inc. Dynamically selecting master clock to manage non-linear simulation clocks
US8476945B2 (en) 2011-03-23 2013-07-02 International Business Machines Corporation Phase profile generator
KR101749583B1 (ko) * 2011-05-30 2017-06-21 삼성전자주식회사 시간차 가산기, 시간차 누산기, 시그마-델타 타임 디지털 변환기, 디지털 위상 고정 루프 및 온도 센서
US8427252B2 (en) 2011-05-31 2013-04-23 Qualcomm Incorporated Oscillators with low power mode of operation
US8514329B2 (en) 2011-05-31 2013-08-20 Motorola Mobility Llc Jitter estimation for MPEG receivers
KR101467547B1 (ko) * 2013-08-30 2014-12-01 포항공과대학교 산학협력단 주입 고정식 디지털 주파수 신시사이저 회로
US9350364B1 (en) * 2015-04-07 2016-05-24 Adtran, Inc. Phase-locked loop circuit having low close-in phase noise
CN108023723B (zh) * 2016-11-04 2021-07-09 华为技术有限公司 频率同步的方法以及从时钟
WO2018090037A1 (en) 2016-11-14 2018-05-17 Marvell World Trade Ltd. Systems and methods for phase synchronization of local oscillator paths in oscillator-operated circuits
US10020813B1 (en) 2017-01-09 2018-07-10 Microsoft Technology Licensing, Llc Scaleable DLL clocking system
US11079723B2 (en) 2018-02-06 2021-08-03 Integrated Device Technology, Inc. Apparatus and methods for automatic time measurements
CN110312068B (zh) * 2018-03-20 2021-09-28 罗伯特·博世有限公司 图像捕获设备和处理方法
US10404261B1 (en) * 2018-06-01 2019-09-03 Yekutiel Josefsberg Radar target detection system for autonomous vehicles with ultra low phase noise frequency synthesizer
US10205457B1 (en) * 2018-06-01 2019-02-12 Yekutiel Josefsberg RADAR target detection system for autonomous vehicles with ultra lowphase noise frequency synthesizer
KR102546646B1 (ko) * 2018-08-28 2023-06-23 매그나칩 반도체 유한회사 오실레이터 주파수 컨트롤러를 포함하는 디스플레이 구동 ic
US10651861B2 (en) * 2018-10-15 2020-05-12 Analog Devices, Inc. Filterless digital phase-locked loop
FR3098665B1 (fr) * 2019-07-09 2021-07-30 St Microelectronics Rousset Procédé de gestion du démarrage d’une boucle à verrouillage de phase, et circuit intégré correspondant
CN111181552B (zh) * 2020-01-08 2023-03-24 电子科技大学 一种双向频率同步振荡器电路
US11251784B2 (en) 2020-03-09 2022-02-15 Stmicroelectronics International N.V. Programmable-on-the-fly fractional divider in accordance with this disclosure
FR3112044B1 (fr) * 2020-06-24 2023-10-27 St Microelectronics Rousset Procédé de gestion du démarrage d’une boucle à verrouillage de phase, et circuit intégré correspondant
CN112769515A (zh) * 2020-12-24 2021-05-07 上海微波技术研究所（中国电子科技集团公司第五十研究所） 基于无线电台的双向授时与测距系统及方法
US11764834B2 (en) 2022-02-15 2023-09-19 Raytheon Company Device for and method of synchronizing multiple beamforming devices
WO2023183498A1 (en) * 2022-03-23 2023-09-28 The Regents Of The University Of Michigan Receiver synchronization for light communications
WO2024091435A1 (en) * 2022-10-28 2024-05-02 Orolia Usa Inc. Multiple and cascaded redundant disciplined oscillator systems in a spoofing resistant reference time source system and methods

Family Cites Families (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU560682B2 (en) 1982-07-13 1987-04-16 Allied Corporation Two piece chilled casting wheel
US4652832A (en) * 1985-07-05 1987-03-24 Motorola, Inc. Frequency resolution in a digital oscillator
US4888564A (en) * 1987-11-06 1989-12-19 Victor Company Of Japan, Ltd. Phase-locked loop circuit
US4901265A (en) * 1987-12-14 1990-02-13 Qualcomm, Inc. Pseudorandom dither for frequency synthesis noise
US4970474A (en) * 1989-08-14 1990-11-13 Delco Electronics Corporation Analog/digital phase locked loop
JP2993200B2 (ja) 1991-07-31 1999-12-20 日本電気株式会社 位相同期ループ
AU674322B2 (en) * 1992-06-02 1996-12-19 Telefonaktiebolaget Lm Ericsson (Publ) Clock extraction circuit for fiber optical receivers
FI93505C (fi) * 1993-05-03 1995-04-10 Nokia Telecommunications Oy Numeerisesti ohjattu oskillaattori ja digitaalinen vaihelukittu silmukka
AU6339594A (en) * 1993-06-09 1994-12-15 Alcatel N.V. Synchronized clock
US5394106A (en) * 1993-08-31 1995-02-28 Gadzoox Microsystems Apparatus and method for synthesis of signals with programmable periods
US5625358A (en) * 1993-09-13 1997-04-29 Analog Devices, Inc. Digital phase-locked loop utilizing a high order sigma-delta modulator
DE4431415C2 (de) * 1994-08-24 1997-01-23 Deutsche Telephonwerk Kabel Verfahren zum Synchronisieren der Ausgangsfrequenzen eines Taktgenerators
US5638010A (en) * 1995-06-07 1997-06-10 Analog Devices, Inc. Digitally controlled oscillator for a phase-locked loop providing a residue signal for use in continuously variable interpolation and decimation filters
GB9616537D0 (en) * 1996-08-06 1996-09-25 Digi Media Vision Ltd Digital synthesiser
FR2765419B1 (fr) * 1997-06-27 1999-09-17 Thomson Csf Dispositif de generation de signaux analogiques a partir de convertisseurs analogique-numerique, notamment pour la synthese numerique directe
US5825253A (en) * 1997-07-15 1998-10-20 Qualcomm Incorporated Phase-locked-loop with noise shaper
US6094569A (en) * 1997-08-12 2000-07-25 U.S. Philips Corporation Multichannel radio device, a radio communication system, and a fractional division frequency synthesizer
US6100767A (en) * 1997-09-29 2000-08-08 Sanyo Electric Co., Ltd. Phase-locked loop with improved trade-off between lock-up time and power dissipation
US5986512A (en) * 1997-12-12 1999-11-16 Telefonaktiebolaget L M Ericsson (Publ) Σ-Δ modulator-controlled phase-locked-loop circuit
WO1999033182A2 (en) 1997-12-22 1999-07-01 Koninklijke Philips Electronics N.V. Circuit including a discrete time oscillator
FR2780831B1 (fr) * 1998-07-03 2000-09-29 Thomson Csf Synthetiseur numerique de signaux
DE19842711C2 (de) * 1998-09-17 2002-01-31 Infineon Technologies Ag Schaltung zur Datensignalrückgewinnung und Taktsignalregenerierung
DE19913110C1 (de) * 1999-03-23 2000-11-16 Siemens Ag Frequenzsynthesizer
US6594330B1 (en) * 1999-10-26 2003-07-15 Agere Systems Inc. Phase-locked loop with digitally controlled, frequency-multiplying oscillator
US6396313B1 (en) * 2000-08-24 2002-05-28 Teradyne, Inc. Noise-shaped digital frequency synthesis
JP4526194B2 (ja) * 2001-01-11 2010-08-18 ルネサスエレクトロニクス株式会社 オーバーサンプリングクロックリカバリ方法及び回路
CA2437793C (en) * 2001-02-08 2010-07-20 Sensormatic Electronics Corporation Automatic wireless synchronization of electronic article surveillance systems
DE60108728T2 (de) * 2001-06-15 2006-05-11 Lucent Technologies Inc. Verfahren und ein Vorrichtung zum Übersenden und Empfangen gemultiplexter untergeordneter Signale
US20030063701A1 (en) * 2001-08-30 2003-04-03 Eubanks John M. Method and apparatus for minimizing jitter and wander in a clock source
US6741109B1 (en) * 2002-02-28 2004-05-25 Silicon Laboratories, Inc. Method and apparatus for switching between input clocks in a phase-locked loop
US6674332B1 (en) * 2002-09-06 2004-01-06 Cypress Semiconductor, Corp. Robust clock circuit architecture
US6833764B1 (en) * 2002-12-16 2004-12-21 Advanced Micro Devices, Inc. Apparatus and method for synthesizing a frequency using vernier dividers
AU2003217053A1 (en) 2003-04-02 2004-10-25 Christopher Julian Travis Method of establishing an oscillator clock signal

Also Published As

Publication number Publication date
EP1611684B1 (de) 2007-05-09
EP1611684B3 (de) 2019-01-02
EP1811670B1 (de) 2010-03-10
DE60331698D1 (de) 2010-04-22
US9407429B2 (en) 2016-08-02
US7924099B2 (en) 2011-04-12
WO2004088845A1 (en) 2004-10-14
US20090121792A1 (en) 2009-05-14
US20160323095A1 (en) 2016-11-03
DE60313812T2 (de) 2008-01-24
US20110156820A1 (en) 2011-06-30
US8618886B2 (en) 2013-12-31
US20060267640A1 (en) 2006-11-30
US20170373826A1 (en) 2017-12-28
US9768949B2 (en) 2017-09-19
DE60313812T3 (de) 2019-04-11
EP1811670A1 (de) 2007-07-25
EP1611684A1 (de) 2006-01-04
US7495516B2 (en) 2009-02-24
US10270585B2 (en) 2019-04-23
US20140105345A1 (en) 2014-04-17
ATE362222T1 (de) 2007-06-15
ATE460774T1 (de) 2010-03-15
AU2003217053A1 (en) 2004-10-25

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