DE69827941D1 - Digitale direktzugriffschaltungseinrichtung und verfahren zur verbindung mit fernsprechleitungen - Google Patents

Digitale direktzugriffschaltungseinrichtung und verfahren zur verbindung mit fernsprechleitungen

Info

Publication number
DE69827941D1
DE69827941D1 DE69827941T DE69827941T DE69827941D1 DE 69827941 D1 DE69827941 D1 DE 69827941D1 DE 69827941 T DE69827941 T DE 69827941T DE 69827941 T DE69827941 T DE 69827941T DE 69827941 D1 DE69827941 D1 DE 69827941D1
Authority
DE
Germany
Prior art keywords
direct access
control device
digital direct
remote control
access control
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
DE69827941T
Other languages
English (en)
Other versions
DE69827941T2 (de
Inventor
Jeffrey W Scott
Navdeep S Sooch
David R Welland
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.)
Silicon Laboratories Inc
Original Assignee
Silicon Laboratories 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
Priority claimed from US08/837,714 external-priority patent/US6430229B1/en
Priority claimed from US08/837,702 external-priority patent/US5870046A/en
Priority claimed from US08/841,409 external-priority patent/US6137827A/en
Application filed by Silicon Laboratories Inc filed Critical Silicon Laboratories Inc
Application granted granted Critical
Publication of DE69827941D1 publication Critical patent/DE69827941D1/de
Publication of DE69827941T2 publication Critical patent/DE69827941T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/57Arrangements for indicating or recording the number of the calling subscriber at the called subscriber's set
    • H04M1/573Line monitoring circuits for detecting caller identification
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0264Arrangements for coupling to transmission lines
    • H04L25/0266Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/06Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/738Interface circuits for coupling substations to external telephone lines
    • H04M1/76Compensating for differences in line impedance
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M11/00Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M19/00Current supply arrangements for telephone systems
    • H04M19/001Current supply source at the exchanger providing current to substations
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M19/00Current supply arrangements for telephone systems
    • H04M19/02Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/005Interface circuits for subscriber lines
    • H04M3/007Access interface units for simultaneous transmission of speech and data, e.g. digital subscriber line [DSL] access interface units
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00Arrangements for synchronising receiver with transmitter
    • H04L7/02Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/033Speed 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
DE69827941T 1997-04-22 1998-04-21 Digitale direktzugriffschaltungseinrichtung und verfahren zur verbindung mit fernsprechleitungen Expired - Lifetime DE69827941T2 (de)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
US841409 1977-10-12
US837702 1997-04-22
US08/837,714 US6430229B1 (en) 1997-04-22 1997-04-22 Capacitive isolation system with digital communication and power transfer
US08/837,702 US5870046A (en) 1997-04-22 1997-04-22 Analog isolation system with digital communication across a capacitive barrier
US837714 1997-04-22
US08/841,409 US6137827A (en) 1997-04-22 1997-04-22 Isolation system with digital communication across a capacitive barrier
US09/035,175 US6385235B1 (en) 1997-04-22 1998-03-04 Direct digital access arrangement circuitry and method for connecting to phone lines
US35175 1998-03-04
PCT/US1998/008116 WO1998048541A2 (en) 1997-04-22 1998-04-21 Direct digital access arrangement circuitry and method for connecting to phone lines

Publications (2)

Publication Number Publication Date
DE69827941D1 true DE69827941D1 (de) 2005-01-05
DE69827941T2 DE69827941T2 (de) 2005-11-24

Family

ID=27488274

Family Applications (3)

Application Number Title Priority Date Filing Date
DE69827941T Expired - Lifetime DE69827941T2 (de) 1997-04-22 1998-04-21 Digitale direktzugriffschaltungseinrichtung und verfahren zur verbindung mit fernsprechleitungen
DE69835465T Expired - Fee Related DE69835465T2 (de) 1997-04-22 1998-04-21 Digitale Direktzugriffschaltungseinrichtung und Verfahren zur Verbindung mit Fernsprechleitungen
DE0978190T Pending DE978190T1 (de) 1997-04-22 1998-04-21 Digitale direktzugriffschaltungseinrichtung und verfahren zur verbindung mit fernsprechleitungen

Family Applications After (2)

Application Number Title Priority Date Filing Date
DE69835465T Expired - Fee Related DE69835465T2 (de) 1997-04-22 1998-04-21 Digitale Direktzugriffschaltungseinrichtung und Verfahren zur Verbindung mit Fernsprechleitungen
DE0978190T Pending DE978190T1 (de) 1997-04-22 1998-04-21 Digitale direktzugriffschaltungseinrichtung und verfahren zur verbindung mit fernsprechleitungen

Country Status (7)

Country Link
US (7) US6385235B1 (de)
EP (2) EP1418739B1 (de)
JP (1) JP4054068B2 (de)
KR (1) KR100380790B1 (de)
AU (1) AU7468198A (de)
DE (3) DE69827941T2 (de)
WO (1) WO1998048541A2 (de)

Families Citing this family (78)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6339048B1 (en) * 1999-12-23 2002-01-15 Elementis Specialties, Inc. Oil and oil invert emulsion drilling fluids with improved anti-settling properties
US6167134A (en) * 1997-04-22 2000-12-26 Silicon Laboratories, Inc. External resistor and method to minimize power dissipation in DC holding circuitry for a communication system
US6442213B1 (en) * 1997-04-22 2002-08-27 Silicon Laboratories Inc. Digital isolation system with hybrid circuit in ADC calibration loop
US6385235B1 (en) * 1997-04-22 2002-05-07 Silicon Laboratories, Inc. Direct digital access arrangement circuitry and method for connecting to phone lines
US6587560B1 (en) * 1997-04-22 2003-07-01 Silicon Laboratories Inc. Low voltage circuits powered by the phone line
US6724891B1 (en) * 1998-03-04 2004-04-20 Silicon Laboratories Inc. Integrated modem and line-isolation circuitry and associated method powering caller ID circuitry with power provided across an isolation barrier
US6714590B1 (en) 1999-07-23 2004-03-30 Silicon Laboratories, Inc. Integrated modem and line-isolation circuitry and associated method
US6757381B1 (en) * 1998-08-13 2004-06-29 Eugene Robert Worley Design of telephone line interface circuits using a two chip opto-coupler with LEDs integrated onto silicon chips
US6920218B1 (en) * 1998-11-16 2005-07-19 Agere Systems Inc. Combination clock and charge pump for line powered DAA
US6553118B1 (en) * 1999-05-11 2003-04-22 Agere Systems Inc. Method and apparatus for calculating DC offset in a digital gyrator
US6735246B1 (en) 1999-07-23 2004-05-11 Silicon Laboratories Inc. Integrated modem and line-isolation circuitry with data flow control and associated method
US6826225B1 (en) 1999-07-23 2004-11-30 Silicon Laboratories, Inc. Integrated modem and line-isolation circuitry with selective raw data or modem data communication and associated method
US7020187B1 (en) 1999-07-23 2006-03-28 Silicon Laboratories Inc. Integrated modem and line-isolation circuitry with HDLC framing and associated method
US6304597B1 (en) 1999-07-23 2001-10-16 Silicon Laboratories, Inc. Integrated modem and line-isolation circuitry with selective modem processing and associated method
US6853644B1 (en) * 1999-12-22 2005-02-08 Intel Corporation Method and apparatus for driving data packets
US6262600B1 (en) * 2000-02-14 2001-07-17 Analog Devices, Inc. Isolator for transmitting logic signals across an isolation barrier
US7526206B1 (en) * 2000-05-23 2009-04-28 The Aerospace Corporation Laser communications crosslink system
US7024539B2 (en) * 2000-07-17 2006-04-04 Silicon Laboratories Inc. Resistor identification configuration circuitry and associated method
US6748515B1 (en) 2000-07-17 2004-06-08 Silicon Laboratories Inc. Programmable vendor identification circuitry and associated method
US6510215B1 (en) 2000-07-17 2003-01-21 Silicon Laboratories Inc. Caller ID data-reporting mechanism for electronic devices and associated methods
US7058173B2 (en) * 2001-02-28 2006-06-06 Thomson Licensing Multi-stage isolation barrier circuitry and method for connection of a telephony device to a telephone line
EP1276305A1 (de) * 2001-05-30 2003-01-15 Texas Instruments Incorporated System und Vorrichtung zur Isolation eines Modems
US20030012363A1 (en) * 2001-07-16 2003-01-16 Loeb Frederick F. Jack module with integrated modem interface circuits
US7139391B2 (en) * 2001-10-30 2006-11-21 Integration Associates, Inc. DAA hook switch
US7702293B2 (en) * 2001-11-02 2010-04-20 Nokia Corporation Multi-mode I/O circuitry supporting low interference signaling schemes for high speed digital interfaces
US7277491B2 (en) * 2002-05-14 2007-10-02 Ess Technology, Inc. Data access arrangement using a high frequency transformer for electrical isolation
WO2004002096A1 (en) * 2002-06-21 2003-12-31 Thomson Licensing S.A. Clock extraction circuit for use in a linearly expandable broadcast router
DE10262239B4 (de) 2002-09-18 2011-04-28 Infineon Technologies Ag Digitales Signalübertragungsverfahren
KR20040074868A (ko) * 2003-02-19 2004-08-26 삼성전자주식회사 차세대 에이 디 에스 엘 가입자 보드의 음성 데이터 전송장치 및 그 방법
US7266195B1 (en) 2003-03-04 2007-09-04 Silicon Laboratories Inc. Surge clamp protection circuit
US6901059B2 (en) * 2003-03-10 2005-05-31 Utstarcom, Inc. Low noise hybrid circuit for communications systems using time division multiplexing
US7089475B1 (en) 2003-03-26 2006-08-08 Silicon Laboratories Inc. Error correction of data across an isolation barrier
US6968055B1 (en) 2003-03-26 2005-11-22 Silicon Laboratories Inc. DC holding circuit
US7218713B1 (en) 2003-04-15 2007-05-15 Silicon Laboratories Inc. Telephone line interface for DAA circuitry
US6891935B1 (en) 2003-12-16 2005-05-10 Silicon Laboratories Inc. Direct access arrangement (DAA) circuit having automatic interface identification
US7512175B2 (en) * 2005-03-16 2009-03-31 Ibiquity Digital Corporation Method for synchronizing exporter and exciter clocks
CN101199004B (zh) 2005-04-22 2011-11-09 高通股份有限公司 用于增益因数平滑的系统、方法及设备
US7773733B2 (en) * 2005-06-23 2010-08-10 Agere Systems Inc. Single-transformer digital isolation barrier
US8213489B2 (en) * 2005-06-23 2012-07-03 Agere Systems Inc. Serial protocol for agile sample rate switching
US7940921B2 (en) * 2005-06-23 2011-05-10 Agere Systems Inc. Continuous power transfer scheme for two-wire serial link
US7672448B2 (en) * 2005-06-23 2010-03-02 2Wire, Inc. Network interface device with a remote power source
US7965977B2 (en) * 2006-04-18 2011-06-21 2Wire, Inc. Remote antenna system
US8520835B2 (en) * 2006-04-18 2013-08-27 2Wire, Inc. Method and apparatus for providing power to a network interface device via telephone lines
US7526034B2 (en) * 2006-04-18 2009-04-28 2Wire, Inc. Method and apparatus for communicating between devices having no common electrical ground
US20080279288A1 (en) * 2007-05-11 2008-11-13 Philip John Crawley Digital Isolator Interface with Process Tracking
US7732889B2 (en) * 2007-05-24 2010-06-08 Akros Silicon Inc. Capacitor structure in a semiconductor device
US20080277761A1 (en) * 2007-05-08 2008-11-13 Texas Instruments, Inc. On-chip isolation capacitors, circuits therefrom, and methods for forming the same
JP4989416B2 (ja) * 2007-10-26 2012-08-01 Kddi株式会社 動画像圧縮符号化装置
US20090145628A1 (en) * 2007-12-05 2009-06-11 Karl Gifford Method of using finely stranded 32-56 gauge "Litz Wire" in both the construction of the Megasonic amplifier (including but not limited to the power transformer and the output filter magnetics) and the interconnect cabling from the amplifier to the transducer, utilizing frequencies above 500kHz to 5 MHz and beyond, but not limited to these frequencies
US8095710B2 (en) * 2008-06-30 2012-01-10 Silicon Laboratories Inc. System and method of providing electrical isolation
US7804859B2 (en) * 2008-06-30 2010-09-28 Silicon Laboratories, Inc. System and method of providing electrical isolation
US7675444B1 (en) * 2008-09-23 2010-03-09 Maxim Integrated Products, Inc. High voltage isolation by capacitive coupling
US8150028B2 (en) * 2008-12-17 2012-04-03 Silicon Laboratories, Inc. Circuit device with serial bus isolation
US8248230B2 (en) 2009-02-20 2012-08-21 Redwood Systems, Inc. Smart power device
US8207635B2 (en) * 2009-02-20 2012-06-26 Redwood Systems, Inc. Digital switch communication
US8427300B2 (en) 2009-02-20 2013-04-23 Redwood Systems, Inc. Transmission of power and data with frequency modulation
US8058750B2 (en) * 2009-05-14 2011-11-15 Redwood Systems, Inc. Discharge cycle communication
JP2011160096A (ja) * 2010-01-29 2011-08-18 Toshiba Corp 光送信回路、光受信回路及び光結合型絶縁回路
TWI445314B (zh) * 2010-08-24 2014-07-11 Genesys Logic Inc 具有頻率與相位偵測器之傳送/接收系統
DE102010042903A1 (de) * 2010-10-26 2012-04-26 Robert Bosch Gmbh Übertragungsverfahren und -System
EP2629438B1 (de) 2012-02-15 2014-11-19 ams AG Sender und Empfänger für impulsdichtenmodulierte Signale und Signalverarbeitungsverfahren
US9013425B2 (en) * 2012-02-23 2015-04-21 Cypress Semiconductor Corporation Method and apparatus for data transmission via capacitance sensing device
US8896182B2 (en) * 2012-04-05 2014-11-25 General Electric Corporation System for driving a piezoelectric load and method of making same
US9293997B2 (en) 2013-03-14 2016-03-22 Analog Devices Global Isolated error amplifier for isolated power supplies
US10097243B2 (en) * 2013-03-15 2018-10-09 David Schie Isolator
DE102013103362B4 (de) * 2013-04-04 2016-09-01 eesy-ic GmbH Umsetzeranordnung
US9660848B2 (en) 2014-09-15 2017-05-23 Analog Devices Global Methods and structures to generate on/off keyed carrier signals for signal isolators
US10270630B2 (en) 2014-09-15 2019-04-23 Analog Devices, Inc. Demodulation of on-off-key modulated signals in signal isolator systems
US10536309B2 (en) 2014-09-15 2020-01-14 Analog Devices, Inc. Demodulation of on-off-key modulated signals in signal isolator systems
DE112015004340T5 (de) 2014-09-24 2017-06-01 Analog Devices, Inc. Schaltungen und Systeme für gemultiplexte Kommunikation über einen Isolator
US9998301B2 (en) 2014-11-03 2018-06-12 Analog Devices, Inc. Signal isolator system with protection for common mode transients
US9065461B1 (en) * 2015-01-15 2015-06-23 Avago Technologies General Ip (Singapore) Pte. Ltd. Coding and decoding isolation device and method thereof
US9941999B1 (en) * 2017-03-08 2018-04-10 Allegro Microsystems, Llc Methods and apparatus for communication over an isolation barrier with monitoring
US10943855B2 (en) 2017-08-23 2021-03-09 Semiconductor Components Industries, Llc Electronic device packaging with galvanic isolation
US10554456B2 (en) * 2017-08-23 2020-02-04 Semiconductor Components Industries, Llc Circuits and methods for bi-directional data communication over isolation channels
US10097166B1 (en) 2017-10-13 2018-10-09 Hamilton Sundstrand Corporation Transformer coupled control isolation for direct current control signals
US11601162B2 (en) 2019-03-18 2023-03-07 Panasonic Intellectual Property Management Co., Ltd. Capacitive coupling circuit device provided with capacitive coupling circuit demodulating modulated signal transmitted through coupling capacitor
US11115244B2 (en) 2019-09-17 2021-09-07 Allegro Microsystems, Llc Signal isolator with three state data transmission

Family Cites Families (155)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750024A (en) 1971-06-16 1973-07-31 Itt Corp Nutley Narrow band digital speech communication system
US3907833A (en) * 1972-05-15 1975-09-23 Celanese Corp Process for oxidizing a hydrocarbon to maleic anhydride and acetic acid
US3904833A (en) 1973-06-04 1975-09-09 Superior Continental Corp Ringing generator circuit with capacitor storage
JPS5753698B2 (de) 1973-07-06 1982-11-15
US4066843A (en) 1975-03-28 1978-01-03 Applied Data Research, Inc. Telephone circuit monitoring system
US4053720A (en) 1975-12-02 1977-10-11 International Telephone And Telegraph Corporation Automatic exclusion circuit
US4054941A (en) 1976-12-22 1977-10-18 Bell Telephone Laboratories, Incorporated Range extender with gain
US4118603A (en) 1977-05-31 1978-10-03 Noramco, Inc. DC signaling circuit for use in conjunction with isolation transformers
US4224487A (en) * 1978-02-23 1980-09-23 Simonsen Bent P Fast acting explosive circuit interrupter
US4192978A (en) 1978-02-27 1980-03-11 Vincent Ogden W Operational amplifier hybrid system
US4224478A (en) * 1978-12-04 1980-09-23 Gte Sylvania Incorporated Data transmission circuit for establishing a bidirectional data path in a telephone system
US4271526A (en) 1979-03-02 1981-06-02 Burroughs Corporation Three-level, self-clocked data transmission system
US4216426A (en) 1979-03-02 1980-08-05 Burroughs Corporation Self-clocked data transmission system having automatic signal reversing means
US4393516A (en) 1979-03-09 1983-07-12 Electric Power Research Institute, Inc. Data transmission system and method
US4384274A (en) 1979-06-22 1983-05-17 American Microsystems, Inc. Current mirror digital to analog converter
US4292595A (en) 1979-11-13 1981-09-29 Burr-Brown Research Corporation Capacitance coupled isolation amplifier and method
US4349821A (en) 1980-01-28 1982-09-14 Westinghouse Electric Corp. Data acquisition system and analog to digital converter therefor
US4594577A (en) 1980-09-02 1986-06-10 American Microsystems, Inc. Current mirror digital to analog converter
US4417099A (en) 1980-11-03 1983-11-22 Universal Data Systems, Inc. Electro-optical isolator circuit for line powered modem
CA1157124A (en) 1981-11-18 1983-11-15 David G. Agnew Hybrid circuit including capacitive charge-transfer means
US4475208A (en) 1982-01-18 1984-10-02 Ricketts James A Wired spread spectrum data communication system
US4541104A (en) 1982-06-10 1985-09-10 Nec Corporation Framing circuit for digital system
US4433212A (en) * 1982-06-21 1984-02-21 Applied Spectrum Technologies, Inc. Telephone line interface circuit
US4528664A (en) 1982-11-29 1985-07-09 Northern Telecom Limited Call progress signal monitor and method for telephone systems
CA1182230A (en) 1982-12-17 1985-02-05 Patrick R. Beirne Subscriber line interface circuit
US4465903A (en) 1983-04-21 1984-08-14 Ixo, Inc. Electronic telephone interface circuit
US4686697A (en) 1983-11-21 1987-08-11 Lifeline Systems, Inc. Telephone care system with telephone line-checking
US4567331A (en) 1983-12-22 1986-01-28 Itt Corporation Electronic hybrid having synthesized impedance circuitry
US4529845A (en) 1984-04-02 1985-07-16 Gte Communication Systems Corporation Optical coupling interface circuit for telephone line ringing signal indication or detection
US4644526A (en) 1984-11-13 1987-02-17 Chialin Wu Full duplex frequency division multiplex communication system
US4656661A (en) 1984-12-13 1987-04-07 American Telephone And Telegraph Company Switched capacitor coupled line receiver circuit
US4686699A (en) 1984-12-21 1987-08-11 International Business Machines Corporation Call progress monitor for a computer telephone interface
JPS61156338A (ja) 1984-12-27 1986-07-16 Toshiba Corp マルチプロセツサシステム
US4607170A (en) 1985-03-01 1986-08-19 Digitel, Inc. Data communication interconnect device
US4712233A (en) 1985-04-22 1987-12-08 Fairchild Camera & Instrument Corp. Monolithic telephone subscriber line interface circuit
US4720811A (en) 1985-04-26 1988-01-19 Hitachi, Ltd. Microprocessor capable of stopping its operation at any cycle time
US4835486A (en) 1986-04-28 1989-05-30 Burr-Brown Corporation Isolation amplifier with precise timing of signals coupled across isolation barrier
US4741031A (en) 1986-06-27 1988-04-26 Gai-Tronics Intrinsically safe telephone
US4757528A (en) 1986-09-05 1988-07-12 Harris Corporation Thermally coupled information transmission across electrical isolation boundaries
GB2198897A (en) 1986-12-18 1988-06-22 Burr Brown Ltd Analog input system
US4993063A (en) 1987-03-03 1991-02-12 Kiko Frederick J Channel unit interface circuit
JPS63305864A (ja) * 1987-06-05 1988-12-13 Matsushita Electric Works Ltd 床ズレ防止マット用コントロ−ラ
CA1291835C (en) 1987-06-19 1991-11-05 Toshiro Tojo Ring trip circuit for subscriber telephone
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
US4901217A (en) 1987-12-01 1990-02-13 Apple Computer, Inc. Digital input power supply and method
US4864605A (en) 1988-03-08 1989-09-05 International Telesystems Corp. Telephone trunk interface circuit
JPH01233921A (ja) 1988-03-15 1989-09-19 Toshiba Corp △−σ変調器を用いたa/d変換回路
US4943807A (en) 1988-04-13 1990-07-24 Crystal Semiconductor Digitally calibrated delta-sigma analog-to-digital converter
DE3912270A1 (de) 1988-04-30 1990-10-18 Holger Knappe Kunststoffbehaelter fuer fluessigkeiten oder gase
US6075842A (en) * 1988-10-11 2000-06-13 Ultratec, Inc. Text enhanced telephony
US5032819A (en) 1988-10-24 1991-07-16 Murata Mfg. Co., Ltd. Data communications system
FR2642593B1 (fr) 1989-01-31 1991-04-12 Cit Alcatel Dispositif electronique de raccordement de ligne d'abonne
US5051799A (en) 1989-02-17 1991-09-24 Paul Jon D Digital output transducer
US4996529A (en) 1989-04-10 1991-02-26 Motorola, Inc. Auto-zeroing circuit for offset cancellation
US5343516A (en) 1989-09-29 1994-08-30 Digital Systems Group, Inc. Computer telecommunications signalling interface
US5058129A (en) * 1989-10-11 1991-10-15 Integrated Network Corporation Two-wire digital transmission loop
US5086454A (en) * 1989-11-17 1992-02-04 Vocal Technologies, Ltd. Direct connect modem deriving power from telephone line
JPH0817437B2 (ja) 1989-11-29 1996-02-21 シャープ株式会社 ファクシミリ装置
JP2999214B2 (ja) 1990-03-02 2000-01-17 株式会社東芝 伝送入出力回路
US5325425A (en) 1990-04-24 1994-06-28 The Telephone Connection Method for monitoring telephone call progress
GB9014679D0 (en) 1990-07-02 1990-08-22 Sarnoff David Res Center Sequential successive approximation a/d converter
US5136630A (en) 1990-07-13 1992-08-04 Gai-Tronics Intrinsically safe telephone
US5204896A (en) 1990-08-10 1993-04-20 Telegenics, Inc. Outbound telemetry device
US5258721A (en) 1990-08-27 1993-11-02 Dallas Semiconductor Corp. Ring signal detection circuit
US5237511A (en) 1990-10-29 1993-08-17 Westronic, Inc. Distribution automation smart remote terminal unit
US5260941A (en) 1990-10-31 1993-11-09 Rose Communications, Inc. Digital radio telephone system
US5235634A (en) 1990-12-14 1993-08-10 Telegenics, Inc. Apparatus and method for activating an inbound telemetry device
US5511118A (en) 1991-01-31 1996-04-23 Northern Telecom Limited Method of providing d.c. feed to a telephone line
US5311588A (en) 1991-02-19 1994-05-10 Intervoice, Inc. Call progress detection circuitry and method
KR940002280Y1 (ko) 1991-03-14 1994-04-13 박정하 송수화기 방치시의 전화기 신호수신 유지회로장치
WO1992019062A1 (en) 1991-04-15 1992-10-29 Northern Telecom Limited Current limited circuit for subscriber interface
GB2256774A (en) 1991-06-11 1992-12-16 Nec Technologies Hands free phone set
US5224154A (en) * 1991-09-06 1993-06-29 Universal Data Systems, Inc. Line powered DCA including dual programmed microcontrollers
US5245654A (en) 1991-10-10 1993-09-14 Cermetek Microelectronics, Inc. Solid state isolation device using opto-isolators
JP2771369B2 (ja) * 1991-10-24 1998-07-02 日本電気株式会社 音声符号化復号化装置
US5361296A (en) 1991-11-25 1994-11-01 Zoom Telephonics, Inc. Modem with ring detection/modem processing capability
US5377260A (en) 1991-12-05 1994-12-27 Sierra Semiconductor Corporation Telephone circuit to control off-hook status during receipt of caller-ID signal
US5577104A (en) 1992-02-05 1996-11-19 Casio Phonemate, Inc. Method for system and message activation based on distinctive ringing
US5355468A (en) 1992-04-06 1994-10-11 Unisys Corporation System for halting synchronous digital modules
DE69325679T2 (de) 1992-04-30 1999-11-11 Hewlett Packard Co Analog-/Digitalwandler mit automatischer Offsetsbereichregelung
GB9209498D0 (en) 1992-05-01 1992-06-17 Univ Waterloo Multi-bit dac with dynamic element matching
US5287107A (en) 1992-06-05 1994-02-15 Hewlett-Packard Company Optical isolation amplifier with sigma-delta modulation
US5369666A (en) 1992-06-09 1994-11-29 Rockwell International Corporation Modem with digital isolation
US5355407A (en) 1992-10-13 1994-10-11 Astro Science Corporation Phone busy circuit
US5375051A (en) 1992-11-13 1994-12-20 Daiblo Research Corporation Apparatus using serial data line to turn on a transceiver or other device
US5329585A (en) 1992-11-30 1994-07-12 Motorola, Inc. Subscriber line interface circuit for controlling AC and DC output impedance
US5361067A (en) 1992-11-30 1994-11-01 Motorola Inc. Digital linearization calibration for analog to digital converter
US5384808A (en) 1992-12-31 1995-01-24 Apple Computer, Inc. Method and apparatus for transmitting NRZ data signals across an isolation barrier disposed in an interface between adjacent devices on a bus
US5337338A (en) 1993-02-01 1994-08-09 Qualcomm Incorporated Pulse density modulation circuit (parallel to serial) comparing in a nonsequential bit order
AU6175694A (en) 1993-02-17 1994-09-14 Silicon Systems, Inc. Temperature compensation for trans-hybrid loss in a miniaturized data access arrangement
US5428682A (en) 1993-03-12 1995-06-27 Advanced Micro Devices, Inc. Subscriber line interface circuit with reduced on-chip power dissipation
US5438678A (en) 1993-03-23 1995-08-01 Smith; Peter L. Self-powered computer accessory device for power extraction from attached data signals and method of operating thereof
WO1994023526A1 (en) 1993-03-26 1994-10-13 Sni Innovation, Inc. Automatic routing of incoming telephone calls to a plurality of receiving devices based on caller identification
JP3581377B2 (ja) 1993-04-06 2004-10-27 ソニー株式会社 ディジタル多重伝送方法と装置
US5426698A (en) 1993-05-11 1995-06-20 General Datacomm, Inc. Transformed current sensing relay for use in switched network modems and circuit incorporating same
JP2508594B2 (ja) 1993-06-18 1996-06-19 日本電気株式会社 Isdnパケット交換モ―ドにおける着呼側装置選択方法
US5555100A (en) 1993-10-07 1996-09-10 Audiofax, Inc. Facsimile store and forward system with local interface translating DTMF signals into store and forward system commands
EP0651541B1 (de) 1993-10-29 2001-01-10 STMicroelectronics S.r.l. Fernsprech-Teilnehmerschaltung mit einem galvanischen Trennungselement zur Erzeugung der An/Aus Zustände einer Fernsprechleitung
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
US5343514A (en) 1993-12-10 1994-08-30 Snyder Gary K Telephone line powered system
US5467385A (en) 1994-01-27 1995-11-14 Reuben; Douglas S. Calling number display and recording system
US5509068A (en) 1994-03-25 1996-04-16 Bayless; Samuel R. Electronic ring monitoring device for telecommunications line
US5442694A (en) 1994-04-12 1995-08-15 Dialogic Corporation Ring tone detection for a telephone system
US5602912A (en) 1994-05-16 1997-02-11 Silicon Systems, Inc. Telephone hybrid circuit
US5533053A (en) 1994-05-16 1996-07-02 Silicon Systems, Inc. Low frequency common mode rejection in a clock circuit
US5500895A (en) 1994-05-24 1996-03-19 Yurgelites; Gerald J. Telephone isolation device
US5473552A (en) 1994-06-15 1995-12-05 Intel Corporation Scheme for isolating a computer system from a data transmission network
US5592529A (en) 1994-09-29 1997-01-07 International Business Machines Corporation Telephone inadvertent off-hook condition detector
US5598157A (en) 1994-10-28 1997-01-28 Harris Corporation Sigma Delta analog to digital converter with three point calibration apparatus and method
US5546448A (en) 1994-11-10 1996-08-13 Multi-Tech Systems, Inc. Apparatus and method for a caller ID modem interface
US5737411A (en) 1994-12-29 1998-04-07 Advanced Micro Devices Inc. Battery switching in a telephone subscriber line interface circuit
US5694465A (en) 1995-03-16 1997-12-02 Advanced Micro Devices, Inc. Integrated ringer for short telephone lines
US5740241A (en) 1995-05-12 1998-04-14 Carrier Access Corporation T1 channel bank control process and apparatus
US5675640A (en) 1995-05-19 1997-10-07 Lucent Technologies Inc. Telephone ringing signal detector
US5544241A (en) 1995-06-27 1996-08-06 Andrew S. Dibner Telephone ring detector
DE69532885D1 (de) 1995-07-28 2004-05-19 St Microelectronics Srl Störungsklingelunterdrückungsvorrichtung, insbesondere für Zusatzklingeln in Stecktelephonsystemen
US5600551A (en) 1995-08-02 1997-02-04 Schenck-Accurate, Inc. Isolated power/voltage multiplier apparatus and method
US5655010A (en) 1995-08-11 1997-08-05 Paradyne Corporation Line-powered modem with capacitive isolation
US5790656A (en) 1995-09-29 1998-08-04 Rockwell International Corporation Data access arrangement with telephone interface
US5705978A (en) 1995-09-29 1998-01-06 Rosemount Inc. Process control transmitter
US5751803A (en) 1995-11-08 1998-05-12 Shmuel Hershkovit Telephone line coupler
GB9524948D0 (en) 1995-12-06 1996-02-07 Int Computers Ltd Combined data and power transmission
US5721774A (en) 1995-12-15 1998-02-24 Lucent Technologies Inc. Longitudinally balanced, dual voltage line-feed circuit
US5659608A (en) 1995-12-15 1997-08-19 Lucent Technologies Inc. Line feed circuit with logic level controlled ringing
US5881102A (en) 1996-02-07 1999-03-09 Intel Corporation Method and apparatus for minimizing modem power while maximizing modem throughput
US5745060A (en) 1996-02-12 1998-04-28 Analog Devices, Inc. Gain calibration circuitry for an analog to digital converter
US5907596A (en) 1996-02-15 1999-05-25 Casio Phonemate, Inc. Calling party identification device with message function
JPH09238205A (ja) 1996-02-29 1997-09-09 Toshiba Corp スピーカホン装置の構成方法及び情報処理装置
CN1183587C (zh) 1996-04-08 2005-01-05 德克萨斯仪器股份有限公司 用于把两个集成电路直流上相互隔离的方法和设备
US5881129A (en) 1996-05-10 1999-03-09 Chen; Robert Kuo-Wei Self-monitoring line interface circuit
US5940459A (en) 1996-07-09 1999-08-17 Pc-Tel, Inc. Host signal processor modem and telephone
US6072778A (en) 1996-08-14 2000-06-06 Motorola, Inc. Method of controlling a communication system
US5805687A (en) 1996-09-30 1998-09-08 Northern Telecom Limited Subscriber equipment muting method and apparatus
US5841840A (en) 1996-12-23 1998-11-24 Paradyne Corporation Multiple line modem and method for providing voice on demand
JP3006524B2 (ja) 1996-12-25 2000-02-07 日本電気株式会社 双方向遷移数削減インターフェース回路
US6061051A (en) 1997-01-17 2000-05-09 Tritech Microelectronics Command set for touchpad pen-input mouse
US5946393A (en) 1997-02-10 1999-08-31 Integration Associates, Inc. Data access arrangement
US5914671A (en) 1997-02-27 1999-06-22 Micron Communications, Inc. System and method for locating individuals and equipment, airline reservation system, communication system
US5974139A (en) 1997-03-07 1999-10-26 Bellsouth Corporation Line isolation device for asymmetrical digital subscriber line
US5875235A (en) 1997-03-07 1999-02-23 S3, Incorporated Transformerless data access arrangement
US6111939A (en) 1997-04-16 2000-08-29 Intel Corporation Method and apparatus for processing caller identification in a power managed computing environment
US5982317A (en) 1997-04-18 1999-11-09 Jesper Steensgaard-Madsen Oversampled digital-to-analog converter based on nonlinear separation and linear recombination
US6385235B1 (en) * 1997-04-22 2002-05-07 Silicon Laboratories, Inc. Direct digital access arrangement circuitry and method for connecting to phone lines
US6137827A (en) * 1997-04-22 2000-10-24 Silicon Laboratories, Inc. Isolation system with digital communication across a capacitive barrier
US5870046A (en) * 1997-04-22 1999-02-09 Silicon Laboratories Inc. Analog isolation system with digital communication across a capacitive barrier
US6430229B1 (en) * 1997-04-22 2002-08-06 Silicon Laboratories Inc. Capacitive isolation system with digital communication and power transfer
US5883907A (en) 1997-05-01 1999-03-16 Motorola, Inc. Asymmetrical digital subscriber line (ADSL) block encoder circuit and method of operation
US6005923A (en) 1997-05-28 1999-12-21 Conexant Systems, Inc. Full featured data access arrangement for use with modems
US5901210A (en) 1997-06-10 1999-05-04 Tdk Systems, Inc. Method and apparatus for implementing automatic number identification system for DAA
US5959372A (en) 1997-07-21 1999-09-28 Emerson Electric Co. Power management circuit
US5991335A (en) 1997-10-14 1999-11-23 3Com Corporation Method and system for line isolation
US6205219B1 (en) 1998-02-24 2001-03-20 Lucent Technologies, Inc. Call related information reception using sigma/delta modulation
US6128373A (en) 1998-05-08 2000-10-03 Conexant Systems, Inc. Programmable data access arrangement having combined command signals
US6081586A (en) 1998-11-16 2000-06-27 Conexant Systems, Inc. Modem having a programmable universal data access arrangement

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DE69835465D1 (de) 2006-09-14
JP4054068B2 (ja) 2008-02-27
US20040161024A1 (en) 2004-08-19
EP0978190A2 (de) 2000-02-09
EP1418739B1 (de) 2006-08-02
JP2002509667A (ja) 2002-03-26
US20060215771A1 (en) 2006-09-28
US20030002571A1 (en) 2003-01-02
US7283584B2 (en) 2007-10-16
KR20010020141A (ko) 2001-03-15
US6385235B1 (en) 2002-05-07
US6654409B1 (en) 2003-11-25
DE69827941T2 (de) 2005-11-24
US7200167B2 (en) 2007-04-03
US7072389B2 (en) 2006-07-04
KR100380790B1 (ko) 2003-04-18
US7301995B2 (en) 2007-11-27
AU7468198A (en) 1998-11-13
EP1418739A1 (de) 2004-05-12
EP0978190B1 (de) 2004-12-01
US20020154702A1 (en) 2002-10-24
DE978190T1 (de) 2000-06-29
WO1998048541A2 (en) 1998-10-29
US7463675B2 (en) 2008-12-09
US20040161023A1 (en) 2004-08-19
WO1998048541A3 (en) 1999-03-18
EP0978190A4 (de) 2000-05-10

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