ES2114805A1 - 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
- ES2114805A1 ES2114805A1 ES09600207A ES9600207A ES2114805A1 ES 2114805 A1 ES2114805 A1 ES 2114805A1 ES 09600207 A ES09600207 A ES 09600207A ES 9600207 A ES9600207 A ES 9600207A ES 2114805 A1 ES2114805 A1 ES 2114805A1
- Authority
- ES
- Spain
- Prior art keywords
- signals
- coupled
- network devices
- filter
- clearing
- 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.)
- Granted
Links
- 238000011144 upstream manufacturing Methods 0.000 abstract 1
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
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).
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 true ES2114805A1 (es) | 1998-06-01 |
ES2114805B1 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)
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 |
US6507585B1 (en) | 1998-05-27 | 2003-01-14 | 3Com Corporation | Multi-carrier LAN adapter device using frequency domain equalizer |
US6891887B1 (en) | 1998-05-27 | 2005-05-10 | 3Com Corporation | Multi-carrier LAN adapter device using interpolative equalizer |
US6603811B1 (en) | 1998-05-29 | 2003-08-05 | 3Com Corporation | Low complexity frequency domain equalizer having fast re-lock |
US6377683B1 (en) | 1998-05-29 | 2002-04-23 | 3Com Corporation | Low complexity frequency domain echo canceller for DMT transceivers |
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 |
JP2003509977A (ja) * | 1999-09-10 | 2003-03-11 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | マルチプルアクセス通信システム |
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 |
WO2001082618A2 (en) * | 2000-04-25 | 2001-11-01 | 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 |
US8284032B2 (en) * | 2006-11-28 | 2012-10-09 | 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 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4771456A (en) * | 1986-11-06 | 1988-09-13 | General Instrument Corporation | Cable television channel selector/descrambler for use with cable-ready video applicances |
US5220424A (en) * | 1990-06-01 | 1993-06-15 | Samsung Electronics Co., Ltd. | Circuit for image signal transmission and reception by adaptive modulation and a method therefor |
JPH0715391A (ja) * | 1993-06-24 | 1995-01-17 | Sharp Corp | 無線通信装置 |
Family Cites Families (12)
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 |
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 |
FR2665319B1 (fr) * | 1990-07-30 | 1993-08-20 | Cgv Comp Gen Videotech | Dispositif de distribution de signaux video et/ou audio entre plusieurs recepteurs. |
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 |
-
1995
- 1995-12-29 CN CN95197509.9A patent/CN1174639A/zh active Pending
- 1995-12-29 GB GB9713885A patent/GB2313274A/en not_active Withdrawn
- 1995-12-29 BR BR9510157A patent/BR9510157A/pt not_active Application Discontinuation
- 1995-12-29 DE DE19581909T patent/DE19581909T1/de not_active Withdrawn
- 1995-12-29 AU AU46914/96A patent/AU4691496A/en not_active Abandoned
- 1995-12-29 WO PCT/US1995/017063 patent/WO1996024207A1/en active Application Filing
-
1996
- 1996-01-02 IL IL11666096A patent/IL116660A0/xx unknown
- 1996-01-08 TW TW085100151A patent/TW346709B/zh active
- 1996-01-22 FR FR9600652A patent/FR2730112A1/fr not_active Withdrawn
- 1996-01-29 IE IE960094A patent/IE960094A1/en not_active IP Right Cessation
- 1996-01-30 ES ES09600207A patent/ES2114805B1/es not_active Expired - Lifetime
- 1996-01-30 AR AR33524196A patent/AR001347A1/es unknown
- 1996-07-11 US US08/678,166 patent/US5966410A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4771456A (en) * | 1986-11-06 | 1988-09-13 | General Instrument Corporation | Cable television channel selector/descrambler for use with cable-ready video applicances |
US5220424A (en) * | 1990-06-01 | 1993-06-15 | Samsung Electronics Co., Ltd. | Circuit for image signal transmission and reception by adaptive modulation and a method therefor |
JPH0715391A (ja) * | 1993-06-24 | 1995-01-17 | Sharp Corp | 無線通信装置 |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN, CD-ROM PAJ, 31 MAYO 1995, 4 [004] [07-000001/07-031200] & JP 7015391 A (SHARP CORP.) 17.01.95 * |
Also Published As
Publication number | Publication date |
---|---|
IE960094A1 (en) | 1996-08-07 |
ES2114805B1 (es) | 1999-02-16 |
WO1996024207A1 (en) | 1996-08-08 |
AU4691496A (en) | 1996-08-21 |
GB2313274A (en) | 1997-11-19 |
BR9510157A (pt) | 1998-11-10 |
IL116660A0 (en) | 1996-05-14 |
TW346709B (en) | 1998-12-01 |
CN1174639A (zh) | 1998-02-25 |
FR2730112A1 (fr) | 1996-08-02 |
US5966410A (en) | 1999-10-12 |
DE19581909T1 (de) | 1998-01-08 |
AR001347A1 (es) | 1997-10-22 |
GB9713885D0 (en) | 1997-09-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EC2A | Search report published |
Date of ref document: 19980601 Kind code of ref document: A1 Effective date: 19980601 |
|
FA2A | Application withdrawn |
Effective date: 19991026 |