IL123739A - שיטה ומיכשור לשחזור תזמון השעון במודמים מסוג xdsl ובמיוחד מודמים מסוג vdsl - Google Patents
שיטה ומיכשור לשחזור תזמון השעון במודמים מסוג xdsl ובמיוחד מודמים מסוג vdslInfo
- Publication number
- IL123739A IL123739A IL12373998A IL12373998A IL123739A IL 123739 A IL123739 A IL 123739A IL 12373998 A IL12373998 A IL 12373998A IL 12373998 A IL12373998 A IL 12373998A IL 123739 A IL123739 A IL 123739A
- Authority
- IL
- Israel
- Prior art keywords
- circuitry
- modem
- data
- dac
- value
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000011084 recovery Methods 0.000 title claims abstract description 27
- 238000005070 sampling Methods 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 16
- 238000012937 correction Methods 0.000 claims description 16
- 230000003595 spectral effect Effects 0.000 claims description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 15
- 239000013598 vector Substances 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 9
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
- 238000012546 transfer Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000004044 response Effects 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010606 normalization Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000003698 anagen phase Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920000729 poly(L-lysine) polymer Polymers 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/66—Digital/analogue converters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/38—Demodulator circuits; Receiver circuits
-
- 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
- H04L7/027—Speed or phase control by the received code signals, the signals containing no special synchronisation information extracting the synchronising or clock signal from the received signal spectrum, e.g. by using a resonant or bandpass circuit
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Theoretical Computer Science (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL12373998A IL123739A (he) | 1998-03-19 | 1998-03-19 | שיטה ומיכשור לשחזור תזמון השעון במודמים מסוג xdsl ובמיוחד מודמים מסוג vdsl |
| EP99910642A EP1060571A4 (en) | 1998-03-19 | 1999-03-18 | METHOD AND APPARATUS FOR CLOCK TIMING RECOVERY IN $g(x)DSL, PARTICULARLY VDSL MODEMS |
| AU29541/99A AU2954199A (en) | 1998-03-19 | 1999-03-18 | Method and apparatus for clock timing recovery in chiDSL particularly VDSL modems |
| US09/623,952 US6922436B1 (en) | 1998-03-19 | 1999-03-18 | Method and apparatus for clock timing recovery in χDSL particularly VDSL modems |
| KR10-2000-7010277A KR100417238B1 (ko) | 1998-03-19 | 1999-03-18 | χ디에스엘, 특히 브이디에스엘 모뎀에서의 클락 타이밍복구 방법 및 장치 |
| PCT/IL1999/000154 WO1999048219A1 (en) | 1998-03-19 | 1999-03-18 | METHOD AND APPARATUS FOR CLOCK TIMING RECOVERY IN ψDSL, PARTICULARLY VDSL MODEMS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL12373998A IL123739A (he) | 1998-03-19 | 1998-03-19 | שיטה ומיכשור לשחזור תזמון השעון במודמים מסוג xdsl ובמיוחד מודמים מסוג vdsl |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IL123739A0 IL123739A0 (en) | 1998-10-30 |
| IL123739A true IL123739A (he) | 2001-11-25 |
Family
ID=11071352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL12373998A IL123739A (he) | 1998-03-19 | 1998-03-19 | שיטה ומיכשור לשחזור תזמון השעון במודמים מסוג xdsl ובמיוחד מודמים מסוג vdsl |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6922436B1 (he) |
| EP (1) | EP1060571A4 (he) |
| KR (1) | KR100417238B1 (he) |
| AU (1) | AU2954199A (he) |
| IL (1) | IL123739A (he) |
| WO (1) | WO1999048219A1 (he) |
Families Citing this family (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8005035B2 (en) | 2001-04-27 | 2011-08-23 | The Directv Group, Inc. | Online output multiplexer filter measurement |
| US7583728B2 (en) * | 2002-10-25 | 2009-09-01 | The Directv Group, Inc. | Equalizers for layered modulated and other signals |
| US7209524B2 (en) * | 2001-04-27 | 2007-04-24 | The Directv Group, Inc. | Layered modulation for digital signals |
| US7639759B2 (en) | 2001-04-27 | 2009-12-29 | The Directv Group, Inc. | Carrier to noise ratio estimations from a received signal |
| US7173981B1 (en) | 2001-04-27 | 2007-02-06 | The Directv Group, Inc. | Dual layer signal processing in a layered modulation digital signal system |
| US7423987B2 (en) | 2001-04-27 | 2008-09-09 | The Directv Group, Inc. | Feeder link configurations to support layered modulation for digital signals |
| US7471735B2 (en) | 2001-04-27 | 2008-12-30 | The Directv Group, Inc. | Maximizing power and spectral efficiencies for layered and conventional modulations |
| US7502430B2 (en) | 2001-04-27 | 2009-03-10 | The Directv Group, Inc. | Coherent averaging for measuring traveling wave tube amplifier nonlinearity |
| US7245671B1 (en) | 2001-04-27 | 2007-07-17 | The Directv Group, Inc. | Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers |
| US7822154B2 (en) | 2001-04-27 | 2010-10-26 | The Directv Group, Inc. | Signal, interference and noise power measurement |
| WO2004040403A2 (en) * | 2001-04-27 | 2004-05-13 | The Directv Group, Inc. | Lower complexity layered modulation signal processor |
| US7778365B2 (en) * | 2001-04-27 | 2010-08-17 | The Directv Group, Inc. | Satellite TWTA on-line non-linearity measurement |
| US7483505B2 (en) * | 2001-04-27 | 2009-01-27 | The Directv Group, Inc. | Unblind equalizer architecture for digital communication systems |
| EP1540909A4 (en) * | 2002-07-01 | 2007-10-17 | Directv Group Inc | IMPROVING HIERARCHICAL 8PSK PERFORMANCE |
| AR040395A1 (es) | 2002-07-03 | 2005-03-30 | Hughes Electronics Corp | Metodo y aparato para modulacion por capas |
| DE10231648B4 (de) * | 2002-07-12 | 2007-05-03 | Infineon Technologies Ag | Verfahren und Vorrichtung zur Stuffing-Regelung |
| US7487350B2 (en) * | 2002-10-25 | 2009-02-03 | Grand Virtual, Inc. | Fixed client identification system for positive identification of client to server |
| US7463676B2 (en) * | 2002-10-25 | 2008-12-09 | The Directv Group, Inc. | On-line phase noise measurement for layered modulation |
| US7474710B2 (en) | 2002-10-25 | 2009-01-06 | The Directv Group, Inc. | Amplitude and phase matching for layered modulation reception |
| US7529312B2 (en) | 2002-10-25 | 2009-05-05 | The Directv Group, Inc. | Layered modulation for terrestrial ATSC applications |
| US7502429B2 (en) | 2003-10-10 | 2009-03-10 | The Directv Group, Inc. | Equalization for traveling wave tube amplifier nonlinearity measurements |
| KR100866949B1 (ko) | 2004-02-02 | 2008-11-05 | 삼성전자주식회사 | 최대 좌표 신호에 기초한 루프 타이밍 복구 방법 및 장치 |
| US7729464B2 (en) * | 2006-12-22 | 2010-06-01 | Teranetics, Inc. | Aiding synchronization between master and slave transceivers |
| US8036332B2 (en) | 2007-03-30 | 2011-10-11 | 4472314 Canada Inc. | Communication signal symbol timing error detection and recovery |
| US8457191B2 (en) * | 2007-08-24 | 2013-06-04 | Comtech Ef Data Corp. | Adaptive equalizer and related methods |
| JP2009088793A (ja) * | 2007-09-28 | 2009-04-23 | Fujitsu Ltd | 同期用システム、同期信号送信装置、クロック供給装置、及び同期方法 |
| US9503250B2 (en) * | 2011-10-28 | 2016-11-22 | Koninklijke Philips N.V. | Data communication with interventional instruments |
| US9166832B1 (en) * | 2013-10-04 | 2015-10-20 | Altera Corporation | Methods and apparatus for decision feedback equalization adaptation |
| US9634694B2 (en) * | 2013-11-26 | 2017-04-25 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Transmitter with a reduced complexity digital up-converter |
| CN106209342B (zh) * | 2016-08-25 | 2022-10-18 | 四川灵通电讯有限公司 | 在xDSL传输系统中实现低频时钟传递的系统 |
| US10305495B2 (en) * | 2016-10-06 | 2019-05-28 | Analog Devices, Inc. | Phase control of clock signal based on feedback |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0413875B1 (en) * | 1989-08-21 | 1994-06-01 | International Business Machines Corporation | Timing control for modem receivers |
| US5163044A (en) | 1991-01-02 | 1992-11-10 | At&T Bell Laboratories | Use of a fractionally spaced equalizer to perform echo cancellation in a full-duplex modem |
| US5222077A (en) * | 1991-04-09 | 1993-06-22 | Racal-Datacom, Inc. | Radix mapping with variable number of symbols in mapping period |
| US5331670A (en) * | 1992-01-31 | 1994-07-19 | At&T Bell Laboratories | Synchronization scheme for a digital communications system |
| US5388127A (en) * | 1993-02-09 | 1995-02-07 | Hitachi America, Ltd. | Digital timing recovery circuit |
| US5504785A (en) * | 1993-05-28 | 1996-04-02 | Tv/Com Technologies, Inc. | Digital receiver for variable symbol rate communications |
| GB9405487D0 (en) * | 1994-03-21 | 1994-05-04 | Rca Thomson Licensing Corp | VSB demodulator |
| US6526101B1 (en) * | 1994-06-28 | 2003-02-25 | Samsung Electronics Co., Ltd. | Receiver for QAM digital television signals |
| US5793821A (en) * | 1995-06-07 | 1998-08-11 | 3Com Corporation | Timing Recovery using group delay compensation |
| US5872815A (en) * | 1996-02-16 | 1999-02-16 | Sarnoff Corporation | Apparatus for generating timing signals for a digital television signal receiver |
| US5987069A (en) * | 1996-12-24 | 1999-11-16 | Gte Government Systems Corporation | Method and apparatus for variably allocating upstream and downstream communication spectra |
| US6249557B1 (en) * | 1997-03-04 | 2001-06-19 | Level One Communications, Inc. | Apparatus and method for performing timing recovery |
| JP3414633B2 (ja) * | 1998-01-16 | 2003-06-09 | 沖電気工業株式会社 | 周波数変換装置 |
| US6449325B1 (en) * | 1998-03-13 | 2002-09-10 | Samsung Electronics Co., Ltd. | Circuitry operative on selected symbol slicing results for synchronizing data fields in a digital television receiver |
-
1998
- 1998-03-19 IL IL12373998A patent/IL123739A/he unknown
-
1999
- 1999-03-18 WO PCT/IL1999/000154 patent/WO1999048219A1/en not_active Ceased
- 1999-03-18 KR KR10-2000-7010277A patent/KR100417238B1/ko not_active Expired - Fee Related
- 1999-03-18 US US09/623,952 patent/US6922436B1/en not_active Expired - Fee Related
- 1999-03-18 EP EP99910642A patent/EP1060571A4/en not_active Withdrawn
- 1999-03-18 AU AU29541/99A patent/AU2954199A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| KR20010052213A (ko) | 2001-06-25 |
| WO1999048219A1 (en) | 1999-09-23 |
| EP1060571A4 (en) | 2005-12-21 |
| US6922436B1 (en) | 2005-07-26 |
| AU2954199A (en) | 1999-10-11 |
| IL123739A0 (en) | 1998-10-30 |
| KR100417238B1 (ko) | 2004-02-05 |
| EP1060571A1 (en) | 2000-12-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| KB | Patent renewed | ||
| KB | Patent renewed | ||
| KB | Patent renewed |