FI942781A - Samanaikainen analoginen ja digitaalinen siirto - Google Patents
Samanaikainen analoginen ja digitaalinen siirto Download PDFInfo
- Publication number
- FI942781A FI942781A FI942781A FI942781A FI942781A FI 942781 A FI942781 A FI 942781A FI 942781 A FI942781 A FI 942781A FI 942781 A FI942781 A FI 942781A FI 942781 A FI942781 A FI 942781A
- Authority
- FI
- Finland
- Prior art keywords
- digital transmission
- simultaneous analog
- simultaneous
- analog
- digital
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J7/00—Multiplex systems in which the amplitudes or durations of the signals in individual channels are characteristic of those channels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/186—Phase-modulated carrier systems, i.e. using phase-shift keying in which the information is carried by both the individual signal points and the subset to which the individual signal points belong, e.g. coset coding or related schemes
-
- 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
- H04L27/345—Modifications of the signal space to allow the transmission of additional information
- H04L27/3461—Modifications of the signal space to allow the transmission of additional information in order to transmit a subchannel
- H04L27/3483—Modifications of the signal space to allow the transmission of additional information in order to transmit a subchannel using a modulation of the constellation points
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Telephonic Communication Services (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/076,505 US5448555A (en) | 1993-06-14 | 1993-06-14 | Simultaneous analog and digital communication |
Publications (2)
Publication Number | Publication Date |
---|---|
FI942781A0 FI942781A0 (fi) | 1994-06-13 |
FI942781A true FI942781A (fi) | 1994-12-15 |
Family
ID=22132442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI942781A FI942781A (fi) | 1993-06-14 | 1994-06-13 | Samanaikainen analoginen ja digitaalinen siirto |
Country Status (8)
Country | Link |
---|---|
US (3) | US5448555A (fi) |
EP (1) | EP0631420A1 (fi) |
JP (1) | JPH0799524A (fi) |
KR (1) | KR950002311A (fi) |
CN (1) | CN1101772A (fi) |
CA (1) | CA2124377A1 (fi) |
FI (1) | FI942781A (fi) |
IL (1) | IL109995A (fi) |
Families Citing this family (74)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0552034B1 (en) * | 1992-01-14 | 2003-04-09 | Fujitsu Limited | Simultaneous transmission of data and analog voice-band signals |
DE4227327A1 (de) * | 1992-08-18 | 1994-02-24 | Philips Patentverwaltung | Teilbandechokompensator mit Teilbandcodiereinrichtung |
US5754589A (en) | 1993-01-08 | 1998-05-19 | Multi-Tech Systems, Inc. | Noncompressed voice and data communication over modem for a computer-based multifunction personal communications system |
US5448555A (en) * | 1993-06-14 | 1995-09-05 | At&T Corp. | Simultaneous analog and digital communication |
US5684834A (en) * | 1993-06-14 | 1997-11-04 | Paradyne Corporation | Simultaneous analog and digital communication using fractional rate encoding |
US5559791A (en) * | 1993-06-14 | 1996-09-24 | Lucent Technologies Inc. | Companding of voice signal for simultaneous voice and data transmission |
US5506866A (en) * | 1993-11-15 | 1996-04-09 | At&T Corp. | Side-channel communications in simultaneous voice and data transmission |
US5559792A (en) * | 1994-04-20 | 1996-09-24 | Lucent Technologies Inc. | Sound modification for use in simultaneous voice and data communications |
US5682386A (en) | 1994-04-19 | 1997-10-28 | Multi-Tech Systems, Inc. | Data/voice/fax compression multiplexer |
US5757801A (en) | 1994-04-19 | 1998-05-26 | Multi-Tech Systems, Inc. | Advanced priority statistical multiplexer |
JPH07322236A (ja) * | 1994-05-23 | 1995-12-08 | Matsushita Electric Ind Co Ltd | Catvシステム |
TW274671B (fi) * | 1994-06-24 | 1996-04-21 | At & T Corp | |
US5642378A (en) * | 1994-11-17 | 1997-06-24 | Denheyer; Brian John | Dual mode analog and digital cellular phone |
US5793759A (en) * | 1995-08-25 | 1998-08-11 | Terayon Corporation | Apparatus and method for digital data transmission over video cable using orthogonal cyclic codes |
US5745837A (en) * | 1995-08-25 | 1998-04-28 | Terayon Corporation | Apparatus and method for digital data transmission over a CATV system using an ATM transport protocol and SCDMA |
US5768269A (en) * | 1995-08-25 | 1998-06-16 | Terayon Corporation | Apparatus and method for establishing frame synchronization in distributed digital data communication systems |
US6307868B1 (en) | 1995-08-25 | 2001-10-23 | Terayon Communication Systems, Inc. | Apparatus and method for SCDMA digital data transmission using orthogonal codes and a head end modem with no tracking loops |
US6356555B1 (en) | 1995-08-25 | 2002-03-12 | Terayon Communications Systems, Inc. | Apparatus and method for digital data transmission using orthogonal codes |
US6665308B1 (en) | 1995-08-25 | 2003-12-16 | Terayon Communication Systems, Inc. | Apparatus and method for equalization in distributed digital data transmission systems |
US5991308A (en) * | 1995-08-25 | 1999-11-23 | Terayon Communication Systems, Inc. | Lower overhead method for data transmission using ATM and SCDMA over hybrid fiber coax cable plant |
US5805583A (en) * | 1995-08-25 | 1998-09-08 | Terayon Communication Systems | Process for communicating multiple channels of digital data in distributed systems using synchronous code division multiple access |
US5878077A (en) * | 1995-10-10 | 1999-03-02 | Paradyne Corporation | Apparatus for high-speed simultaneous voice/data communications |
US5796716A (en) * | 1995-11-27 | 1998-08-18 | Paradyne Corporation | Method and apparatus for simultaneous voice/data transmission |
US5838665A (en) * | 1996-03-11 | 1998-11-17 | Integrated Technology, Inc. | Data network telephone adaptor device |
JP3140960B2 (ja) * | 1996-04-05 | 2001-03-05 | 富士通株式会社 | モデム信号送信装置及びモデム信号送信方法並びにモデム信号受信装置及びモデム信号受信方法並びにモデム信号送受信システム及びモデム信号送受信方法 |
US5912952A (en) * | 1996-06-27 | 1999-06-15 | At&T Corp | Voice response unit with a visual menu interface |
US6023472A (en) * | 1996-07-08 | 2000-02-08 | Lancast, Inc. | High speed FD/HD data translator and network |
US5933431A (en) * | 1996-08-15 | 1999-08-03 | Paradyne Corporation | Frame-based modulus interleaver |
US5742679A (en) * | 1996-08-19 | 1998-04-21 | Rockwell International Corporation | Optimized simultaneous audio and data transmission using QADM with phase randomization |
US5926505A (en) * | 1996-10-16 | 1999-07-20 | Cirrus Logic, Inc. | Device, system, and method for modem communication utilizing two-step mapping |
US5790658A (en) * | 1996-10-28 | 1998-08-04 | Advanced Micro Devices, Inc. | High performance echo canceller for high speed modem |
US6370149B1 (en) | 1998-07-20 | 2002-04-09 | Ameritech Corporation | Telecommunication system, method and subscriber unit for use therein |
US7187686B1 (en) | 1996-11-01 | 2007-03-06 | Sbc Properties, B.P. | Telecommunication system, method and subscriber unit for use therein |
US6049572A (en) * | 1996-12-30 | 2000-04-11 | Intel Corporation | Optimization of QAM constellation space for auxiliary I-Q signaling |
US6205124B1 (en) * | 1996-12-31 | 2001-03-20 | Compaq Computer Corporation | Multipoint digital simultaneous voice and data system |
US5914982A (en) * | 1997-06-13 | 1999-06-22 | Rockwell Semiconductor Systems, Inc. | Method and apparatus for training linear equalizers in a PCM modem |
KR100565933B1 (ko) * | 1997-06-17 | 2006-03-30 | 퀄컴 인코포레이티드 | 감소된 피크-대-평균 진폭을 갖는 다중 채널 링크 |
US5949763A (en) | 1997-07-17 | 1999-09-07 | Ameritech Corporation | Method and apparatus for providing broadband access conferencing services |
US6407995B1 (en) | 1997-08-14 | 2002-06-18 | Lucent Technologies Inc. | Independently switched voice and data calls using a single PSTN line connection |
US6097753A (en) * | 1997-09-23 | 2000-08-01 | Paradyne Corporation | System and method for simultaneous voice and data with adaptive gain based on short term audio energy |
US6141356A (en) | 1997-11-10 | 2000-10-31 | Ameritech Corporation | System and method for distributing voice and data information over wireless and wireline networks |
US6151335A (en) | 1997-12-02 | 2000-11-21 | Conexant Systems, Inc. | Modulation switching for DSL signal transmission |
US9432172B2 (en) | 1997-12-05 | 2016-08-30 | Rembrandt Wireless Technologies, Lp | System and method of communication using at least two modulation methods |
US7248626B2 (en) | 1997-12-05 | 2007-07-24 | Paradyne Corporation | System and method of communication via embedded modulation |
US6704324B1 (en) | 1998-03-25 | 2004-03-09 | Paradyne Corporation | Apparatus and method for transmission of voice band signals over a DSL line |
US6226332B1 (en) * | 1998-11-13 | 2001-05-01 | Broadcom Corporation | Multi-pair transceiver decoder system with low computation slicer |
US6397276B1 (en) | 1999-03-29 | 2002-05-28 | Eugene Rzyski | Data transmission by an alternating-frequency analog signal |
US6335936B1 (en) | 1999-04-22 | 2002-01-01 | Ameritech Corporation | Wide area communication networking |
US6285671B1 (en) | 1999-04-22 | 2001-09-04 | Ameritech Corporation | Method and system for providing facsimile service over a digital subscriber line |
US6724918B1 (en) * | 1999-05-12 | 2004-04-20 | The Board Of Trustees Of The Leland Stanford Junior University | System and method for indexing, accessing and retrieving audio/video with concurrent sketch activity |
US7458013B2 (en) * | 1999-05-12 | 2008-11-25 | The Board Of Trustees Of The Leland Stanford Junior University | Concurrent voice to text and sketch processing with synchronized replay |
US6760727B1 (en) | 1999-07-30 | 2004-07-06 | Convergys Cmg Utah, Inc. | System for customer contact information management and methods for using same |
US8135425B1 (en) * | 2000-02-29 | 2012-03-13 | Agere Systems Inc. | System and method for communicating data over a radio frequency voice channel |
US7505531B1 (en) | 2000-03-17 | 2009-03-17 | Bridgewave Communications, Inc. | Signal communications system and method for noisy links |
US6956941B1 (en) | 2000-04-12 | 2005-10-18 | Austin Logistics Incorporated | Method and system for scheduling inbound inquiries |
US7142662B2 (en) | 2000-07-11 | 2006-11-28 | Austin Logistics Incorporated | Method and system for distributing outbound telephone calls |
US7103173B2 (en) | 2001-07-09 | 2006-09-05 | Austin Logistics Incorporated | System and method for preemptive goals based routing of contact records |
US7502460B2 (en) | 2006-11-20 | 2009-03-10 | Austin Logistics Incorporated | Method and system for distributing outbound telephone calls |
AU2001290941A1 (en) * | 2000-09-15 | 2002-03-26 | En Technology Corporation | Video signal with integral data transmission |
US7715546B2 (en) | 2001-07-09 | 2010-05-11 | Austin Logistics Incorporated | System and method for updating contact records |
US7054434B2 (en) | 2001-07-09 | 2006-05-30 | Austin Logistics Incorporated | System and method for common account based routing of contact records |
US6937666B2 (en) * | 2002-12-20 | 2005-08-30 | Bridgewave Communications, Inc. | Wideband digital radio with transmit modulation cancellation |
EP1625686A1 (en) * | 2003-05-16 | 2006-02-15 | THOMSON Licensing | A unified receiver for layered and hierarchical modulation systems |
CN100539562C (zh) * | 2003-05-16 | 2009-09-09 | 汤姆森许可公司 | 基于卫星的通信***中的重复编码 |
US7949074B2 (en) * | 2004-04-24 | 2011-05-24 | Thomson Licensing | Apparatus and method for decoding in a hierarchical, modulation system |
JP4463133B2 (ja) * | 2005-03-25 | 2010-05-12 | Necインフロンティア株式会社 | ボタン電話装置および音声通信チャネル制御方法 |
US7887058B2 (en) * | 2005-07-07 | 2011-02-15 | Mattel, Inc. | Methods of playing drawing games and electronic game systems adapted to interactively provide the same |
US8731007B2 (en) * | 2005-12-30 | 2014-05-20 | Remec Broadband Wireless, Llc | Digital microwave radio link with a variety of ports |
US8711888B2 (en) * | 2005-12-30 | 2014-04-29 | Remec Broadband Wireless Llc | Digital microwave radio link with adaptive data rate |
US7920696B2 (en) * | 2006-12-14 | 2011-04-05 | Motorola Mobility, Inc. | Method and device for changing to a speakerphone mode |
US7852969B2 (en) * | 2007-07-30 | 2010-12-14 | Mitutoyo Corporation | System and method for dynamic calibration of a quadrature encoder |
US8160812B1 (en) * | 2007-09-06 | 2012-04-17 | Sprint Communications Company L.P. | Tracking and guidance architecture and method |
DK2201390T3 (da) * | 2007-09-17 | 2014-07-21 | Ably As | Fremgangsmåde og apparat til overvågning af kraftoverføring |
US8548449B2 (en) * | 2010-05-20 | 2013-10-01 | Microsoft Corporation | Mobile contact notes |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3912860A (en) * | 1972-05-22 | 1975-10-14 | Matsushita Electric Ind Co Ltd | Image display system |
GB1592556A (en) * | 1976-10-28 | 1981-07-08 | Rixon | Quadrature-amplitude-modulation data transmission systems and transmitters |
US4355397A (en) * | 1980-10-15 | 1982-10-19 | Rixon, Inc. | Full duplex communication system for voice grade channels |
DE3174560D1 (en) * | 1981-07-28 | 1986-06-12 | Ibm | Transmission method for voice and digital data and arrangement for carrying out said method |
US4525846A (en) * | 1982-12-27 | 1985-06-25 | Paradyne Corporation | Modem in-band secondary channel via radial modulation |
US4512013A (en) * | 1983-04-11 | 1985-04-16 | At&T Bell Laboratories | Simultaneous transmission of speech and data over an analog channel |
US4659876A (en) * | 1983-08-30 | 1987-04-21 | Spi Soft Pac International | Audiographics communication system |
US4627077A (en) * | 1983-09-20 | 1986-12-02 | Paradyne Corporation | Modified QAM data point constellation for secondary channel signalling |
US4630287A (en) * | 1983-12-28 | 1986-12-16 | Paradyne Corporation | Secondary channel signalling in a QAM data point constellation |
US4546212A (en) * | 1984-03-08 | 1985-10-08 | Crowder, Inc. | Data/voice adapter for telephone network |
US4672602A (en) * | 1984-11-02 | 1987-06-09 | Itt Corporation | Control and routing system |
JPH0773240B2 (ja) * | 1985-12-13 | 1995-08-02 | 日本電気株式会社 | 自動再トレ−ニング方式 |
US4757495A (en) * | 1986-03-05 | 1988-07-12 | Telebit Corporation | Speech and data multiplexor optimized for use over impaired and bandwidth restricted analog channels |
US4911536A (en) * | 1986-05-08 | 1990-03-27 | Ditzik Richard J | Interactive graphic comunications terminal |
US4827085A (en) * | 1987-11-19 | 1989-05-02 | Ovonic Imaging Systems, Inc. | Voice and image teleconferencing system including paperless facsimile means |
US5081647A (en) * | 1989-01-06 | 1992-01-14 | American Telephone & Telegraph Company | Communication of a voice signal via continuous quadrature amplitude modulator |
US4924516A (en) * | 1989-05-23 | 1990-05-08 | At&T Paradyne | Method and system for a synchronized pseudo-random privacy modem |
US5119319A (en) * | 1989-12-14 | 1992-06-02 | Options Unlimited Research Corp. | Full-duplex video communication system |
US5309555A (en) * | 1990-05-15 | 1994-05-03 | International Business Machines Corporation | Realtime communication of hand drawn images in a multiprogramming window environment |
US5105443A (en) * | 1990-05-29 | 1992-04-14 | At&T Bell Laboratories | Inband coding of secondary data |
US5103227A (en) * | 1990-09-26 | 1992-04-07 | At&T Bell Laboratories | Modulus converter for fractional rate encoding |
US5448555A (en) * | 1993-06-14 | 1995-09-05 | At&T Corp. | Simultaneous analog and digital communication |
-
1993
- 1993-06-14 US US08/076,505 patent/US5448555A/en not_active Expired - Lifetime
-
1994
- 1994-05-26 CA CA002124377A patent/CA2124377A1/en not_active Abandoned
- 1994-06-10 EP EP94304185A patent/EP0631420A1/en not_active Withdrawn
- 1994-06-13 JP JP6153111A patent/JPH0799524A/ja active Pending
- 1994-06-13 IL IL109995A patent/IL109995A/xx not_active IP Right Cessation
- 1994-06-13 KR KR1019940013569A patent/KR950002311A/ko not_active Application Discontinuation
- 1994-06-13 FI FI942781A patent/FI942781A/fi not_active Application Discontinuation
- 1994-06-13 CN CN94106647A patent/CN1101772A/zh active Pending
-
1995
- 1995-05-30 US US08/453,855 patent/US5661718A/en not_active Expired - Lifetime
-
1997
- 1997-02-20 US US08/802,976 patent/US5915003A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
KR950002311A (ko) | 1995-01-04 |
US5915003A (en) | 1999-06-22 |
FI942781A0 (fi) | 1994-06-13 |
IL109995A (en) | 1997-09-30 |
EP0631420A1 (en) | 1994-12-28 |
IL109995A0 (en) | 1994-10-07 |
JPH0799524A (ja) | 1995-04-11 |
US5661718A (en) | 1997-08-26 |
CN1101772A (zh) | 1995-04-19 |
US5448555A (en) | 1995-09-05 |
CA2124377A1 (en) | 1994-12-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD | Application lapsed |