WO1995027352B1 - High speed bidirectional digital cable transmission system - Google Patents
High speed bidirectional digital cable transmission systemInfo
- Publication number
- WO1995027352B1 WO1995027352B1 PCT/US1995/003238 US9503238W WO9527352B1 WO 1995027352 B1 WO1995027352 B1 WO 1995027352B1 US 9503238 W US9503238 W US 9503238W WO 9527352 B1 WO9527352 B1 WO 9527352B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- data
- cable
- high speed
- head end
- voice
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract 20
- 230000002457 bidirectional Effects 0.000 title claims abstract 9
- 230000000051 modifying Effects 0.000 claims 8
- 238000006243 chemical reaction Methods 0.000 claims 2
- 230000005236 sound signal Effects 0.000 claims 1
- 230000001702 transmitter Effects 0.000 abstract 1
Abstract
A high speed bidirectional cable transmission system for CATV and other television systems includes unidirectional transmission of video signals from a head end unit (10) to a plurality of transceivers or subscribers connected to a transmission line. The head end unit (10) encodes voice data using QPSK encoding and time division multiplexing of the encoded data in a plurality of frequency bands to the subscribers. Each subscriber attached to the cable (32) for receiving continuous transmission of voice and video data is assigned an identification number and at least one voice channel for selectively accessing data. Each subscriber includes a transmitter for transmitting voice data on the cable (32) to the head end unit (10) using time division multiple access transmission of bursts of data in the plurality of frequency bands.
Claims
1. A high speed bidirectional cable television transmission system for providing voice interface between a public switched telephone network and system subscribers comprising a television transmission cable, a head end unit for continuous transmission of voice and video data on said cable to a plurality of cable television subscriber receivers attached to said cable, said continuous transmission including time division multiplexing of data in a plurality of frequency bands said head end unit including a telephone interface for transmitting and receiving voice data, and a plurality of transceivers, each attached to said cable for receiving said continuous transmission of voice and video data, each of said transceivers being assigned an identification number and at least one voice channel for selectively accessing data, each transceiver including transmitting means for transmitting voice data through said cable and said head end unit to the public switched telephone network using time division multiple access transmission of bursts of data in said plurality of frequency bands.
2. The high speed bidirectional cable transmission system as defined by claim 1 wherein said head end unit includes a quadrature phase shift keyed (QPSK) modulator for receiving and modulating digitized voice data from the public switched telephone network, a mixer for increasing frequency of said QPSK modulated data, and a digital to analog conversion means for converting said QPSK modulated to analog form for transmission on said cable.
3. The high speed bidirectional cable transmission system as defined by claim 2 wherein each of said subscribers includes a quadrature phase shift keyed (QPSK) modulator for receiving and digitizing voice data from a telephone, a mixer for increasing frequency of said QPSK modulated data, and digital to analog conversion means for converting QPSK modulated data to analog form for transmission on said cable to said head end unit.
4. The high speed bidirectional cable transmission system as defined by claim 3 wherein said head end unit transmits QPSK voice data in frequency bands between 500 MHz and 750 MHz and each of said subscribers transmits QPSK voice data in data bursts in frequency bands between 5 MHz and
30 MHz.
5. The high speed bidirectional cable transmission system as defined by claim 3 wherein each QPSK modulator includes in-phaεe and quadrature phase transversal finite impulse response (FIR) filters and interpolation filters for forming in-phase and quadrature phase data symbols, said mixer including in-phase and quadrature phase mixing elements.
6. The high speed bidirectional cable transmission system as defined by claim 3 wherein said head end unit further includes a burst demodulator including sine and cosine mixers to extract in-phase and quadrature phase encoded data, a transversal matched filter to identify a Barker code at the beginning of a burst of data, and a differential detector operating in synchronization with a detected Barker code for detecting in-phase and quadrature phase encoded data.
7. The high speed bidirectional cable transmission system as defined by claim 6 wherein each subscriber further includes a downconverter for a received signal and demodulator for providing audio signals to a telephone interface.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95913707A EP0754378B1 (en) | 1994-04-05 | 1995-03-14 | High speed bidirectional digital cable transmission system |
JP7525710A JPH10501930A (en) | 1994-04-05 | 1995-03-14 | High-speed two-way digital cable transmission system |
DE69527057T DE69527057T2 (en) | 1994-04-05 | 1995-03-14 | DIGITAL BIDIRECTIONAL HIGH-SPEED TRANSMISSION SYSTEM |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/223,487 US5553064A (en) | 1994-04-05 | 1994-04-05 | High speed bidirectional digital cable transmission system |
US08/223,487 | 1994-04-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1995027352A1 WO1995027352A1 (en) | 1995-10-12 |
WO1995027352B1 true WO1995027352B1 (en) | 1995-11-23 |
Family
ID=22836722
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1995/003238 WO1995027352A1 (en) | 1994-04-05 | 1995-03-14 | High speed bidirectional digital cable transmission system |
Country Status (5)
Country | Link |
---|---|
US (1) | US5553064A (en) |
EP (1) | EP0754378B1 (en) |
JP (1) | JPH10501930A (en) |
DE (1) | DE69527057T2 (en) |
WO (1) | WO1995027352A1 (en) |
Families Citing this family (70)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0701351A3 (en) * | 1994-09-07 | 1999-12-01 | Siemens Aktiengesellschaft | Carrier frequency transmission of digital signals in burst mode |
US6334219B1 (en) * | 1994-09-26 | 2001-12-25 | Adc Telecommunications Inc. | Channel selection for a hybrid fiber coax network |
USRE42236E1 (en) | 1995-02-06 | 2011-03-22 | Adc Telecommunications, Inc. | Multiuse subcarriers in multipoint-to-point communication using orthogonal frequency division multiplexing |
US7280564B1 (en) | 1995-02-06 | 2007-10-09 | Adc Telecommunications, Inc. | Synchronization techniques in multipoint-to-point communication using orthgonal frequency division multiplexing |
DE19511332A1 (en) * | 1995-03-28 | 1996-10-02 | Sel Alcatel Ag | Broadband distribution system and method therefor |
US5706048A (en) * | 1995-04-24 | 1998-01-06 | Motorola, Inc. | Wireless digital data access system and method |
JP3645308B2 (en) * | 1995-05-01 | 2005-05-11 | 富士通株式会社 | Service distribution method with mixed analog and digital broadcasting services |
EP0762766A3 (en) * | 1995-09-12 | 1997-11-05 | AT&T Corp. | Network apparatus and method for providing two-way broadband communications |
US5784597A (en) * | 1995-09-22 | 1998-07-21 | Hewlett-Packard Company | Communications network system including acknowledgement indicating successful receipt of request for reserved communication slots and start time for said reserved communication slots |
JPH10512733A (en) * | 1995-10-12 | 1998-12-02 | ネクスト レベル コミュニケーションズ | Burst mode preamble |
EP1122650A3 (en) * | 1996-01-24 | 2002-01-16 | ADC Telecommunications, Inc. | Communication system with multicarrier telephony transport |
US6298098B1 (en) * | 1996-04-09 | 2001-10-02 | Intel Corporation | Burst demodulator for use in high speed bidirectional digital cable transmission system |
US6028769A (en) * | 1996-05-20 | 2000-02-22 | Adc Telecommunication, Inc. | Multiple integrated service unit for communication system |
EP0820194A1 (en) * | 1996-07-19 | 1998-01-21 | Telefonaktiebolaget Lm Ericsson | A method and an arrangement for integrated radio telecommunication via a CATV network |
US5995483A (en) | 1996-08-22 | 1999-11-30 | Tellabs Operations, Inc. | Apparatus and method for upstream clock synchronization in a multi-point OFDM/DMT digital communication system |
US6118758A (en) | 1996-08-22 | 2000-09-12 | Tellabs Operations, Inc. | Multi-point OFDM/DMT digital communications system including remote service unit with improved transmitter architecture |
US6285654B1 (en) * | 1996-08-22 | 2001-09-04 | Tellabs Operations, Inc. | Apparatus and method for symbol alignment in a multi-point OFDM or DMT digital communications system |
US5956346A (en) * | 1996-10-22 | 1999-09-21 | Hybrid Networks, Inc. | Broadband communication system using TV channel roll-off spectrum |
US6950388B2 (en) * | 1996-08-22 | 2005-09-27 | Tellabs Operations, Inc. | Apparatus and method for symbol alignment in a multi-point OFDM/DMT digital communications system |
US6771590B1 (en) * | 1996-08-22 | 2004-08-03 | Tellabs Operations, Inc. | Communication system clock synchronization techniques |
US6622304B1 (en) * | 1996-09-09 | 2003-09-16 | Thomas W. Carhart | Interface system for computing apparatus and communications stations |
US5898684A (en) * | 1996-12-19 | 1999-04-27 | Stanford Telecommunications, Inc. | TDMA burst receiver |
KR100225901B1 (en) * | 1997-03-04 | 1999-10-15 | 최대용 | Apparatus and method for testing a catv transmission line |
US6014545A (en) * | 1997-03-27 | 2000-01-11 | Industrial Technology Research Institute | Growable architecture for high-speed two-way data services over CATV networks |
GB2328591B (en) * | 1997-08-21 | 2003-03-05 | Comm & Control Electronics Ltd | Local communication system and apparatus for use therein |
US6631175B2 (en) | 1998-04-03 | 2003-10-07 | Tellabs Operations, Inc. | Spectrally constrained impulse shortening filter for a discrete multi-tone receiver |
US7440498B2 (en) | 2002-12-17 | 2008-10-21 | Tellabs Operations, Inc. | Time domain equalization for discrete multi-tone systems |
DK1068704T3 (en) | 1998-04-03 | 2012-09-17 | Tellabs Operations Inc | Impulse response shortening filter, with additional spectral constraints, for multi-wave transfer |
US6219345B1 (en) | 1998-09-30 | 2001-04-17 | Conexant Systems, Inc. | Timing estimation in mobile communication systems using parabolic interpolator |
US6356374B1 (en) * | 1998-10-09 | 2002-03-12 | Scientific-Atlanta, Inc. | Digital optical transmitter |
US7103065B1 (en) * | 1998-10-30 | 2006-09-05 | Broadcom Corporation | Data packet fragmentation in a cable modem system |
WO2000028712A2 (en) * | 1998-10-30 | 2000-05-18 | Broadcom Corporation | Cable modem system |
US6961314B1 (en) | 1998-10-30 | 2005-11-01 | Broadcom Corporation | Burst receiver for cable modem system |
DE60007979T2 (en) * | 1999-04-30 | 2004-12-16 | Thomson Licensing S.A., Boulogne | ELECTRONIC TRADE BY TELEVISION |
US6529868B1 (en) * | 2000-03-28 | 2003-03-04 | Tellabs Operations, Inc. | Communication system noise cancellation power signal calculation techniques |
GB2362279B (en) * | 2000-05-12 | 2004-12-29 | Global Silicon Ltd | Radio receiver |
WO2002005559A1 (en) * | 2000-07-10 | 2002-01-17 | Terk Technologies Corp. | Pay-per-view program access control system |
US7609608B2 (en) * | 2001-09-26 | 2009-10-27 | General Atomics | Method and apparatus for data transfer using a time division multiple frequency scheme with additional modulation |
US7321601B2 (en) * | 2001-09-26 | 2008-01-22 | General Atomics | Method and apparatus for data transfer using a time division multiple frequency scheme supplemented with polarity modulation |
US7342973B2 (en) * | 2001-09-26 | 2008-03-11 | General Atomics | Method and apparatus for adapting multi-band ultra-wideband signaling to interference sources |
US6895059B2 (en) * | 2001-09-26 | 2005-05-17 | General Atomics | Method and apparatus for data transfer using a time division multiple frequency scheme |
US6914597B2 (en) * | 2001-10-17 | 2005-07-05 | Hewlett-Packard Development Company, L.P. | System for bi-directional video signal transmission |
US6674967B2 (en) * | 2001-11-14 | 2004-01-06 | Scientific-Atlanta, Inc. | Fiber-to-the-home (FTTH) optical receiver having gain control and a remote enable |
US7161996B1 (en) * | 2002-02-05 | 2007-01-09 | Airgo Networks, Inc. | Multi-antenna wireless receiver chains with vector decoding |
AU2003294204A1 (en) * | 2002-02-20 | 2004-05-04 | General Atomics | Method and apparatus for data transfer using a time division multiple frequency scheme with additional modulation |
US8634030B2 (en) * | 2002-10-25 | 2014-01-21 | Disney Enterprises, Inc. | Streaming of digital data to a portable device |
US7161989B1 (en) * | 2003-03-29 | 2007-01-09 | Wideband Semiconductors, Inc. | CIC qam modulator |
US7599332B2 (en) * | 2004-04-05 | 2009-10-06 | Qualcomm Incorporated | Modified preamble structure for IEEE 802.11a extensions to allow for coexistence and interoperability between 802.11a devices and higher data rate, MIMO or otherwise extended devices |
US7916803B2 (en) | 2003-04-10 | 2011-03-29 | Qualcomm Incorporated | Modified preamble structure for IEEE 802.11a extensions to allow for coexistence and interoperability between 802.11a devices and higher data rate, MIMO or otherwise extended devices |
US8743837B2 (en) * | 2003-04-10 | 2014-06-03 | Qualcomm Incorporated | Modified preamble structure for IEEE 802.11A extensions to allow for coexistence and interoperability between 802.11A devices and higher data rate, MIMO or otherwise extended devices |
US6724335B1 (en) * | 2003-06-03 | 2004-04-20 | Broadcom Corporation | Systems and methods for digital upconversion for television signals |
DE602006007697D1 (en) * | 2005-04-28 | 2009-08-20 | Nxp Bv | CIRCUIT FOR A COMMUNICATION DEVICE AND METHOD FOR CONTROLLING A TRANSMISSION |
WO2008146090A1 (en) * | 2007-05-25 | 2008-12-04 | Freescale Semiconductor, Inc. | Wireless communication unit, baseband module, radio frequency module, wireless terminal and computer program product |
US8590844B2 (en) * | 2009-07-17 | 2013-11-26 | Siemens Rail Auotmation Corporation | Track circuit communications |
US8500071B2 (en) * | 2009-10-27 | 2013-08-06 | Invensys Rail Corporation | Method and apparatus for bi-directional downstream adjacent crossing signaling |
US8660215B2 (en) * | 2010-03-16 | 2014-02-25 | Siemens Rail Automation Corporation | Decoding algorithm for frequency shift key communications |
US9525488B2 (en) | 2010-05-02 | 2016-12-20 | Corning Optical Communications LLC | Digital data services and/or power distribution in optical fiber-based distributed communications systems providing digital data and radio frequency (RF) communications services, and related components and methods |
US20110268446A1 (en) | 2010-05-02 | 2011-11-03 | Cune William P | Providing digital data services in optical fiber-based distributed radio frequency (rf) communications systems, and related components and methods |
CN103119865A (en) | 2010-08-16 | 2013-05-22 | 康宁光缆系统有限责任公司 | Remote antenna clusters and related systems, components, and methods supporting digital data signal propagation between remote antenna units |
US9252874B2 (en) | 2010-10-13 | 2016-02-02 | Ccs Technology, Inc | Power management for remote antenna units in distributed antenna systems |
CN203504582U (en) | 2011-02-21 | 2014-03-26 | 康宁光缆系统有限责任公司 | Distributed antenna system and power supply apparatus for distributing electric power thereof |
US10030878B2 (en) | 2013-08-21 | 2018-07-24 | Honeywell International Inc. | User interaction with building controller device using a remote server and a duplex connection |
WO2015026933A2 (en) | 2013-08-21 | 2015-02-26 | Honeywell International Inc. | Devices and methods for interacting with an hvac controller |
US10659163B2 (en) | 2014-09-25 | 2020-05-19 | Corning Optical Communications LLC | Supporting analog remote antenna units (RAUs) in digital distributed antenna systems (DASs) using analog RAU digital adaptors |
WO2016071902A1 (en) | 2014-11-03 | 2016-05-12 | Corning Optical Communications Wireless Ltd. | Multi-band monopole planar antennas configured to facilitate improved radio frequency (rf) isolation in multiple-input multiple-output (mimo) antenna arrangement |
WO2016075696A1 (en) | 2014-11-13 | 2016-05-19 | Corning Optical Communications Wireless Ltd. | Analog distributed antenna systems (dass) supporting distribution of digital communications signals interfaced from a digital signal source and analog radio frequency (rf) communications signals |
EP3235336A1 (en) | 2014-12-18 | 2017-10-25 | Corning Optical Communications Wireless Ltd. | Digital interface modules (dims) for flexibly distributing digital and/or analog communications signals in wide-area analog distributed antenna systems (dass) |
WO2016098111A1 (en) | 2014-12-18 | 2016-06-23 | Corning Optical Communications Wireless Ltd. | Digital- analog interface modules (da!ms) for flexibly.distributing digital and/or analog communications signals in wide-area analog distributed antenna systems (dass) |
US10524046B2 (en) | 2017-12-06 | 2019-12-31 | Ademco Inc. | Systems and methods for automatic speech recognition |
US11553410B2 (en) * | 2020-05-13 | 2023-01-10 | Northeastern University | Method and apparatus for access point discovery in dense WiFi networks |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE32327E (en) * | 1980-07-07 | 1987-01-06 | Sytek, Inc. | Multiple channel data communication system |
US4498169A (en) * | 1983-03-14 | 1985-02-05 | Scientific Atlanta, Inc. | Multiaccess broadcast communication system |
US5157491A (en) * | 1988-10-17 | 1992-10-20 | Kassatly L Samuel A | Method and apparatus for video broadcasting and teleconferencing |
US5272700A (en) * | 1989-02-28 | 1993-12-21 | First Pacific Networks, Inc. | Spectrally efficient broadband transmission system |
US5084903A (en) * | 1989-02-28 | 1992-01-28 | First Pacific Networks | Modulation and demodulation system employing AM-PSK and QPSK communication system using digital signals |
US5351234A (en) * | 1990-12-28 | 1994-09-27 | Nynex Corporation | System for integrated distribution of switched voice and television on coaxial cable |
US5255267A (en) * | 1992-03-09 | 1993-10-19 | First Pacific Networks, Inc. | Apparatus for combining broadband and baseband signal transmissions |
-
1994
- 1994-04-05 US US08/223,487 patent/US5553064A/en not_active Expired - Lifetime
-
1995
- 1995-03-14 DE DE69527057T patent/DE69527057T2/en not_active Expired - Lifetime
- 1995-03-14 WO PCT/US1995/003238 patent/WO1995027352A1/en active Search and Examination
- 1995-03-14 JP JP7525710A patent/JPH10501930A/en active Pending
- 1995-03-14 EP EP95913707A patent/EP0754378B1/en not_active Expired - Lifetime
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO1995027352B1 (en) | High speed bidirectional digital cable transmission system | |
US5553064A (en) | High speed bidirectional digital cable transmission system | |
US5412352A (en) | Modulator having direct digital synthesis for broadband RF transmission | |
JP2766430B2 (en) | Method and apparatus for delivering wireless telephone signals over a cable television network | |
US4644526A (en) | Full duplex frequency division multiplex communication system | |
US5088111A (en) | Modulation and demodulation system employing AM-PSK and FSK for communication system using digital signals | |
US4884285A (en) | (DS) transmitter | |
US5825829A (en) | Modulator for a broadband communications system | |
EP0385695B1 (en) | Communication system | |
US6084852A (en) | Burst mode preamble | |
CA2223982A1 (en) | Multiple user communication system, device and method with overlapping uplink carrier spectra | |
US4335464A (en) | Dual multipoint data transmission system modem | |
US6470046B1 (en) | Apparatus and method for a combined DSL and voice system | |
RU97115497A (en) | VIDEO ACCESS DEVICE FOR AUDIO AND VIDEO CONFERENCES AND TELEPHONY SYSTEM | |
WO2001056212A2 (en) | Digital signal processing optical transmitter | |
WO1998008345B1 (en) | System for use in television roll-off band channels for data transfer over a network | |
EP1049282A3 (en) | Multiresolution modulation with multicarrier signals | |
CA2652488A1 (en) | Communication system | |
AU717225B2 (en) | Device and method relating to cable TV networks | |
RU98119313A (en) | RADIO COMMUNICATION SYSTEM BETWEEN ONE AND MULTIPLE ITEMS | |
KR100325019B1 (en) | Apparatus for providing multi internet connection service | |
CA2200600A1 (en) | Hybrid fiber/coax video and telephony communication system | |
US7257220B1 (en) | Method and system for providing extended reach of a digital subscriber line signal | |
KR100210862B1 (en) | Rt modem apparatus of swan 2 network | |
JP3009025U (en) | Transmitter |