ES2114805B1 - Metodo y sistema para dejar libre de ruido una banda de frecuencias. - Google Patents

Metodo y sistema para dejar libre de ruido una banda de frecuencias.

Info

Publication number
ES2114805B1
ES2114805B1 ES09600207A ES9600207A ES2114805B1 ES 2114805 B1 ES2114805 B1 ES 2114805B1 ES 09600207 A ES09600207 A ES 09600207A ES 9600207 A ES9600207 A ES 9600207A ES 2114805 B1 ES2114805 B1 ES 2114805B1
Authority
ES
Spain
Prior art keywords
signals
noise
leave
coupled
frequency band
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
ES09600207A
Other languages
English (en)
Other versions
ES2114805A1 (es
Inventor
Phillip Kent Freyman
Gary E Mastenbrook
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.)
Motorola Solutions Inc
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Publication of ES2114805A1 publication Critical patent/ES2114805A1/es
Application granted granted Critical
Publication of ES2114805B1 publication Critical patent/ES2114805B1/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/36—Repeater circuits
    • H04B3/38—Repeater circuits for signals in two different frequency ranges transmitted in opposite directions over the same transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/12—Arrangements for observation, testing or troubleshooting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/76—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
    • H04H60/81—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself
    • H04H60/93—Wired transmission systems
    • H04H60/96—CATV systems
    • H04H60/97—CATV systems using uplink of the CATV systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable
    • H04N7/102—Circuits therefor, e.g. noise reducers, equalisers, amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Transmitters (AREA)

Abstract

METODO Y SISTEMA PARA DEJAR LIBRE DE RUIDO UNA BANDA DE FRECUENCIAS EN UN SISTEMA DE CABLE (10) QUE TIENE UNA PLURALIDAD DE CAUS (34) ACOPLADOS A UNA VARIEDAD DE DISPOSITIVOS DE LA RED (58-68) EN EL DOMICILIO DEL ABONADO (36). LOS DISPOSITIVOS DE LA RED (58-68) TRANSMITEN SEÑALES AL CAU (34) EN UNA FRECUENCIA LIBRE DE RUIDO (100). LAS SEÑALES SE ACOPLAN A UN FILTRO (70) QUE BLOQUEA CUALQUIER INTRODUCCION DE RUIDO DE LA INSTALACION DEL ABONADO (36). EL FILTRO (70) SE ACOPLA A UN MEZCLADOR (76) QUE CONVIERTE LAS SEÑALES DE LA FRECUENCIA LIBRE DE RUIDO (100) A UNA FRECUENCIA DESEADA (104). LAS SEÑALES DE REGRESION EN UNA BANDA DE DERIVACION (102) SE ACOPLAN DESDE LOS DISPOSITIVOS DE LA RED HASTA UN FILTRO DE PASO BAJO (72). LAS SEÑALES SE COMBINAN ENTONCES CON LAS SEÑALES CONVERTIDAS Y TRANSMITIDAS AL SISTEMA DE CABLE (10).
ES09600207A 1995-01-30 1996-01-30 Metodo y sistema para dejar libre de ruido una banda de frecuencias. Expired - Lifetime ES2114805B1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US38054595A 1995-01-30 1995-01-30

Publications (2)

Publication Number Publication Date
ES2114805A1 ES2114805A1 (es) 1998-06-01
ES2114805B1 true ES2114805B1 (es) 1999-02-16

Family

ID=23501583

Family Applications (1)

Application Number Title Priority Date Filing Date
ES09600207A Expired - Lifetime ES2114805B1 (es) 1995-01-30 1996-01-30 Metodo y sistema para dejar libre de ruido una banda de frecuencias.

Country Status (13)

Country Link
US (1) US5966410A (es)
CN (1) CN1174639A (es)
AR (1) AR001347A1 (es)
AU (1) AU4691496A (es)
BR (1) BR9510157A (es)
DE (1) DE19581909T1 (es)
ES (1) ES2114805B1 (es)
FR (1) FR2730112A1 (es)
GB (1) GB2313274A (es)
IE (1) IE960094A1 (es)
IL (1) IL116660A0 (es)
TW (1) TW346709B (es)
WO (1) WO1996024207A1 (es)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6292944B1 (en) * 1996-07-31 2001-09-18 Trilithic, Inc. Return path ingress in a two-way CATV system
US6094211A (en) * 1996-08-15 2000-07-25 Com21, Inc. TV and data cable system ingress noise blocker
US6333920B1 (en) * 1996-09-09 2001-12-25 Lucent Technologies Inc. Frequency division duplexing system which accommodates symmetric and asymmetric channels
US6704317B1 (en) 1998-05-27 2004-03-09 3Com Corporation Multi-carrier LAN modem server
US6891887B1 (en) 1998-05-27 2005-05-10 3Com Corporation Multi-carrier LAN adapter device using interpolative equalizer
US6507585B1 (en) 1998-05-27 2003-01-14 3Com Corporation Multi-carrier LAN adapter device using frequency domain equalizer
US6377683B1 (en) 1998-05-29 2002-04-23 3Com Corporation Low complexity frequency domain echo canceller for DMT transceivers
US6603811B1 (en) 1998-05-29 2003-08-05 3Com Corporation Low complexity frequency domain equalizer having fast re-lock
US6889095B1 (en) * 1998-06-11 2005-05-03 Agilent Technologies, Inc. Computer network adapted for industrial environments
US6546056B1 (en) 1999-05-28 2003-04-08 3Com Corporation Timing recovery in a multi-tone modem
EP1138155B1 (en) 1999-09-10 2009-03-25 Koninklijke Philips Electronics N.V. Multiple access communication system
US6973670B1 (en) * 1999-11-08 2005-12-06 Masprodenkoh Kabushikikaisha In-building CATV system, down-converter, up-converter and amplifier
US20020056141A1 (en) * 2000-04-03 2002-05-09 Advanced Interactive Inc. Two way cable system with noise-free return path
NZ522452A (en) * 2000-04-25 2004-07-30 Advanced Interactive Inc Two way cable system with noise-free return path
US6757910B1 (en) * 2000-06-08 2004-06-29 C-Cor.Net Corporation Adaptive filter for reducing ingress noise in CATV return signals
NL1015473C2 (nl) * 2000-06-19 2001-12-28 Roax Bv Communicatiesysteem.
US7039432B2 (en) * 2001-12-04 2006-05-02 General Instrument Corporation Dynamic upstream attenuation for ingress noise reduction
US20030121056A1 (en) * 2001-12-21 2003-06-26 Sorenson Donald C. HFC reverse path using an intelligent dynamic switch
WO2008066325A1 (en) * 2006-11-28 2008-06-05 Samsung Electronics Co., Ltd. Method and apparatus for signal detection in radio frequency identification system
US10250781B1 (en) 2017-11-16 2019-04-02 Via Vi Solutions, Inc. Instrument for locating a noise source in a CATV system and method of using same

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4272721A (en) * 1978-12-07 1981-06-09 Gte Automatic Electric Laboratories Inc. Analog-to-digital converter alignment circuit
JPS5791085A (en) * 1980-11-27 1982-06-07 Sony Corp Television receiver
US4450481A (en) * 1981-08-25 1984-05-22 E-Com Corporation Tamper-resistant, expandable communications system
US4553264A (en) * 1982-09-17 1985-11-12 Matsushita Electric Industrial Co., Ltd. Double superheterodyne tuner
US4496986A (en) * 1983-01-11 1985-01-29 U.S. Philips Corporation Subscription television interface
US4771456A (en) * 1986-11-06 1988-09-13 General Instrument Corporation Cable television channel selector/descrambler for use with cable-ready video applicances
GB2214758A (en) * 1988-01-22 1989-09-06 Philips Electronic Associated Signal distribution network system
US5126840A (en) * 1988-04-21 1992-06-30 Videotron Ltee Filter circuit receiving upstream signals for use in a CATV network
KR920010812B1 (ko) * 1990-06-01 1992-12-17 삼성전자 주식회사 적응 변조에 의한 영상신호 송수신 방식 및 회로
FR2665319B1 (fr) * 1990-07-30 1993-08-20 Cgv Comp Gen Videotech Dispositif de distribution de signaux video et/ou audio entre plusieurs recepteurs.
JPH0715391A (ja) * 1993-06-24 1995-01-17 Sharp Corp 無線通信装置
US5355162A (en) * 1993-07-13 1994-10-11 Pacific Ray Video Limited Multi-standard cable television system
US5528582A (en) * 1994-07-29 1996-06-18 At&T Corp. Network apparatus and method for providing two way broadband communications
US5557319A (en) * 1994-12-28 1996-09-17 U.S. Philips Corporation Subscriber return system for CATV full service networks
US5737461A (en) * 1996-05-09 1998-04-07 Motorola, Inc. Methods and filter for isolating upstream ingress noise in a bi-directional cable system

Also Published As

Publication number Publication date
BR9510157A (pt) 1998-11-10
AU4691496A (en) 1996-08-21
GB2313274A (en) 1997-11-19
GB9713885D0 (en) 1997-09-03
ES2114805A1 (es) 1998-06-01
CN1174639A (zh) 1998-02-25
US5966410A (en) 1999-10-12
WO1996024207A1 (en) 1996-08-08
AR001347A1 (es) 1997-10-22
FR2730112A1 (fr) 1996-08-02
IL116660A0 (en) 1996-05-14
DE19581909T1 (de) 1998-01-08
IE960094A1 (en) 1996-08-07
TW346709B (en) 1998-12-01

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