WO2001061907A3 - Calibration system for a communications system - Google Patents

Calibration system for a communications system Download PDF

Info

Publication number
WO2001061907A3
WO2001061907A3 PCT/US2001/005025 US0105025W WO0161907A3 WO 2001061907 A3 WO2001061907 A3 WO 2001061907A3 US 0105025 W US0105025 W US 0105025W WO 0161907 A3 WO0161907 A3 WO 0161907A3
Authority
WO
WIPO (PCT)
Prior art keywords
transmitter
calibration
calibration system
circuit
transfer function
Prior art date
Application number
PCT/US2001/005025
Other languages
French (fr)
Other versions
WO2001061907A2 (en
Inventor
Olafur Josefsson
Colm Prendergast
James Wilson
Daniel T Boyko
Original Assignee
Analog Devices Inc
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 Analog Devices Inc filed Critical Analog Devices Inc
Priority to AU2001238388A priority Critical patent/AU2001238388A1/en
Publication of WO2001061907A2 publication Critical patent/WO2001061907A2/en
Publication of WO2001061907A3 publication Critical patent/WO2001061907A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/7385—Programmable or microprocessor-controlled
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0002—Modulated-carrier systems analog front ends; means for connecting modulators, demodulators or transceivers to a transmission line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5462—Systems for power line communications
    • H04B2203/5483—Systems for power line communications using coupling circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5462—Systems for power line communications
    • H04B2203/5491—Systems for power line communications using filtering and bypassing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems

Abstract

A calibration system (18) for a communication system (10) is provided featuring a transmitter circuit (12), a receiver circuit (16), a transmission medium (14) having a transfer function for transmitting a signal between the transmitter and receiver circuits, and a calibration system responsive to the altered reference signal of the transmitter circuit for adjusting the reference signal level of one of the transmitter and receiver circuits to compensate for variations in the transmission signal due to the transfer function.
PCT/US2001/005025 2000-02-17 2001-02-16 Calibration system for a communications system WO2001061907A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001238388A AU2001238388A1 (en) 2000-02-17 2001-02-16 Calibration system for a communications system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US18310700P 2000-02-17 2000-02-17
US60/183,107 2000-02-17

Publications (2)

Publication Number Publication Date
WO2001061907A2 WO2001061907A2 (en) 2001-08-23
WO2001061907A3 true WO2001061907A3 (en) 2002-03-21

Family

ID=22671469

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US2001/005035 WO2001061863A1 (en) 2000-02-17 2001-02-15 Isolation system with analog communication across an isolation barrier
PCT/US2001/005025 WO2001061907A2 (en) 2000-02-17 2001-02-16 Calibration system for a communications system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/US2001/005035 WO2001061863A1 (en) 2000-02-17 2001-02-15 Isolation system with analog communication across an isolation barrier

Country Status (3)

Country Link
US (2) US7110531B2 (en)
AU (2) AU2001237048A1 (en)
WO (2) WO2001061863A1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001061863A1 (en) 2000-02-17 2001-08-23 Analog Devices, Inc. Isolation system with analog communication across an isolation barrier
US7277491B2 (en) * 2002-05-14 2007-10-02 Ess Technology, Inc. Data access arrangement using a high frequency transformer for electrical isolation
TWI235555B (en) * 2004-03-18 2005-07-01 Mediatek Inc DAC DC offset calibration method and related apparatus
US8036622B2 (en) * 2005-09-28 2011-10-11 Qualcomm, Incorporated DC offset cancellation circuit for a receiver
US20100304679A1 (en) * 2009-05-28 2010-12-02 Hanks Zeng Method and System For Echo Estimation and Cancellation
US8947126B2 (en) * 2011-10-10 2015-02-03 Infineon Technologies Austria Ag System, drivers for switches and methods for synchronizing measurements of analog-to-digital converters
US8497700B2 (en) 2011-10-21 2013-07-30 Samsung Electro-Mechanics Systems and methods for propagating digital data across an isolation barrier
US8571093B1 (en) * 2012-04-24 2013-10-29 Nxp B.V. Communication interface for galvanic isolation
CN103269324B (en) * 2013-05-30 2016-04-20 清华大学 Timing tracking method under multi-path channel environment
US9712261B2 (en) 2013-08-15 2017-07-18 Silicon Laboratories Inc. Apparatus and method of background temperature calibration
EP3293888B1 (en) 2016-09-13 2020-08-26 Allegro MicroSystems, LLC Signal isolator having bidirectional communication between die
CN107105366B (en) * 2017-06-15 2022-09-23 歌尔股份有限公司 Multi-channel echo cancellation circuit and method and intelligent device
CN110138403A (en) * 2018-02-06 2019-08-16 扬智科技股份有限公司 Communication device and its echo removing method
US11115244B2 (en) 2019-09-17 2021-09-07 Allegro Microsystems, Llc Signal isolator with three state data transmission
US11519754B2 (en) 2020-05-29 2022-12-06 Analog Devices International Unlimited Company Isolation amplifier with reference signal transfer
CN112039517B (en) * 2020-09-04 2024-03-22 上海川土微电子有限公司 Ultra-low power consumption capacitive digital isolator circuit based on Pulse-Coding

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4835486A (en) * 1986-04-28 1989-05-30 Burr-Brown Corporation Isolation amplifier with precise timing of signals coupled across isolation barrier
US5022024A (en) * 1985-03-20 1991-06-04 International Mobile Machines Corporation Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
US5155743A (en) * 1990-11-27 1992-10-13 Nuance Designworks, Inc. Digital data converter
US5353310A (en) * 1991-12-11 1994-10-04 U.S. Philips Corporation Data transmission system with reduced error propagation
US5724363A (en) * 1996-06-21 1998-03-03 Breya; Edward F. Optical analog signal transmission system
US6184829B1 (en) * 1999-01-08 2001-02-06 Trueposition, Inc. Calibration for wireless location system

Family Cites Families (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4539552A (en) * 1979-12-13 1985-09-03 At&T Bell Laboratories Digital-to-analog converter
US4387273A (en) * 1980-08-25 1983-06-07 International Telephone And Telegraph Corporation Subscriber line interface circuit with impedance synthesizer
US4563547A (en) 1983-03-07 1986-01-07 At&T Bell Laboratories Loop-start/ground-start line interface circuit
US4748419A (en) * 1986-04-28 1988-05-31 Burr-Brown Corporation Isolation amplifier with precise timing of signals coupled across isolation barrier
US5142677A (en) * 1989-05-04 1992-08-25 Texas Instruments Incorporated Context switching devices, systems and methods
US4843339A (en) 1987-10-28 1989-06-27 Burr-Brown Corporation Isolation amplifier including precision voltage-to-duty-cycle converter and low ripple, high bandwidth charge balance demodulator
DE3816300A1 (en) * 1988-05-13 1989-11-23 Tzn Forschung & Entwicklung CARTRIDGE FOR ELECTROTHERMAL LOCKING DEVICES
DE3942757A1 (en) * 1989-12-23 1991-06-27 Standard Elektrik Lorenz Ag SUMMER AMPLIFIER WITH A COMPLEX WEIGHTING FACTOR AND INTERFACE WITH SUCH A SUMMER AMPLIFIER
US5369687A (en) 1992-12-17 1994-11-29 Practical Peripherals, Inc. Apparatus for electrically isolating a telephone line from a data device
US5537441A (en) * 1993-06-14 1996-07-16 At&T Corp. Controlled simultaneous analog and digital communication
US5392218A (en) * 1993-06-14 1995-02-21 Sundstrand Corporation Electrically isolated approach to sensing dc voltages referenced to a floating ground
US5654984A (en) * 1993-12-03 1997-08-05 Silicon Systems, Inc. Signal modulation across capacitors
US5500894A (en) * 1993-12-03 1996-03-19 Silicon Systems, Inc. Telephone line interface with AC and DC transconductance loops
US5602912A (en) * 1994-05-16 1997-02-11 Silicon Systems, Inc. Telephone hybrid circuit
US5500895A (en) * 1994-05-24 1996-03-19 Yurgelites; Gerald J. Telephone isolation device
US5574396A (en) * 1994-10-13 1996-11-12 The Foxboro Company Micro-power vortex isolator circuit
JP3000911B2 (en) * 1996-01-10 2000-01-17 日本電気株式会社 Automatic setting of optimal number of frames waiting for retransmission of automatic retransmission protocol in mobile facsimile communication
US6587560B1 (en) * 1997-04-22 2003-07-01 Silicon Laboratories Inc. Low voltage circuits powered by the phone line
US6137827A (en) 1997-04-22 2000-10-24 Silicon Laboratories, Inc. Isolation system with digital communication across a capacitive barrier
US6167132A (en) * 1997-04-22 2000-12-26 Silicon Laboratories, Inc. Analog successive approximation (SAR) analog-to-digital converter (ADC)
US5870046A (en) 1997-04-22 1999-02-09 Silicon Laboratories Inc. Analog isolation system with digital communication across a capacitive barrier
US5883907A (en) * 1997-05-01 1999-03-16 Motorola, Inc. Asymmetrical digital subscriber line (ADSL) block encoder circuit and method of operation
JPH1172515A (en) * 1997-08-28 1999-03-16 Iwatsu Electric Co Ltd Broad-band analog insulation circuit
US6151335A (en) * 1997-12-02 2000-11-21 Conexant Systems, Inc. Modulation switching for DSL signal transmission
US6304594B1 (en) * 1998-07-27 2001-10-16 General Dynamics Government Systems Corporation Interference detection and avoidance technique
US6415003B1 (en) * 1998-09-11 2002-07-02 National Semiconductor Corporation Digital baseline wander correction circuit
US6434199B1 (en) * 1998-10-20 2002-08-13 Trw Inc. 2N-QAM macrocell
US6081586A (en) * 1998-11-16 2000-06-27 Conexant Systems, Inc. Modem having a programmable universal data access arrangement
US6545785B1 (en) * 1999-04-01 2003-04-08 Trw Inc. Optical communication system with phase modulation
WO2001061863A1 (en) 2000-02-17 2001-08-23 Analog Devices, Inc. Isolation system with analog communication across an isolation barrier

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5022024A (en) * 1985-03-20 1991-06-04 International Mobile Machines Corporation Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
US5022024B1 (en) * 1985-03-20 1999-06-22 Interdigital Tech Corp Subscriber rf telephone system for providing multiple speech and/or data signals simultaneously over either a signal or a plurality of rf channels
US4835486A (en) * 1986-04-28 1989-05-30 Burr-Brown Corporation Isolation amplifier with precise timing of signals coupled across isolation barrier
US5155743A (en) * 1990-11-27 1992-10-13 Nuance Designworks, Inc. Digital data converter
US5353310A (en) * 1991-12-11 1994-10-04 U.S. Philips Corporation Data transmission system with reduced error propagation
US5724363A (en) * 1996-06-21 1998-03-03 Breya; Edward F. Optical analog signal transmission system
US6184829B1 (en) * 1999-01-08 2001-02-06 Trueposition, Inc. Calibration for wireless location system

Also Published As

Publication number Publication date
AU2001238388A1 (en) 2001-08-27
AU2001237048A1 (en) 2001-08-27
US20010031012A1 (en) 2001-10-18
US7305037B2 (en) 2007-12-04
WO2001061907A2 (en) 2001-08-23
US7110531B2 (en) 2006-09-19
WO2001061863A1 (en) 2001-08-23
US20010028320A1 (en) 2001-10-11

Similar Documents

Publication Publication Date Title
WO2001061907A3 (en) Calibration system for a communications system
WO2000036764A3 (en) Method and radio system for digital signal transmission
CA2371384A1 (en) Transmit diversity method and system
CA2398932A1 (en) Radio communication system, communication terminal, and method for transmitting burst signals
WO1993007549A3 (en) Wireless communication system for air distribution system
WO2002015413A3 (en) Power line communication system
WO2002095960A3 (en) Method and apparatus for transmitting control messages in a wireless communication system.
WO2001089097A3 (en) Transmission rate changes in communications networks
CA2304864A1 (en) Integrated power control and congestion control in a communication system
WO2000044091A3 (en) Antenna system for radio frequency identification
TW428384B (en) Increasing performance in communications by embedding one signal in another signal
WO2002045293A3 (en) Radio communicati0n system
EP1237345A4 (en) Data communication speed control system, transmitter apparatus and receiver apparatus
WO2002045442A3 (en) Multi-standard radio communication system
WO1995027353A3 (en) Simultaneous transmission of high and low speed signals
WO2002027972A3 (en) Downlink transmission in a wireless data communication system having a base station with a smart antenna system
CA2247618A1 (en) Multiple antenna communication system and method thereof
EP1271949A4 (en) Signal transmission system, signal transmitter, and signal receiver
EP0862295A4 (en) Data transmitter, data receiver, and data transmission controller
EP0982796A3 (en) Antenna impedance adjuster
WO2001078220A8 (en) Data transfer method
WO2000010307A3 (en) Adaptive rate network communication system and method
WO2002067413A3 (en) Transmitter and receiver circuit for radio frequency
EP0851609A3 (en) Transceiver in base station for communicating with high-speed and low speed communication spread spectrum mobile users
WO2000069117A3 (en) Communication system with a ring-shaped communication bus

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
AK Designated states

Kind code of ref document: A3

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP