WO1998005164A1 - Return path ingress noise measurement system - Google Patents
Return path ingress noise measurement system Download PDFInfo
- Publication number
- WO1998005164A1 WO1998005164A1 PCT/US1997/013516 US9713516W WO9805164A1 WO 1998005164 A1 WO1998005164 A1 WO 1998005164A1 US 9713516 W US9713516 W US 9713516W WO 9805164 A1 WO9805164 A1 WO 9805164A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- node
- filter
- signal
- coupling
- port
- Prior art date
Links
Classifications
-
- 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
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/76—Wired systems
- H04H20/77—Wired systems using carrier waves
- H04H20/78—CATV [Community Antenna Television] systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
-
- 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
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44209—Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network
-
- 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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6118—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving cable transmission, e.g. using a cable modem
-
- 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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
- H04N21/64723—Monitoring of network processes or resources, e.g. monitoring of network load
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
-
- 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
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU38230/97A AU724283B2 (en) | 1996-07-31 | 1997-07-31 | Return path ingress noise measurement system |
CA002261957A CA2261957C (en) | 1996-07-31 | 1997-07-31 | Return path ingress noise measurement system |
EP97935244A EP0916223A4 (en) | 1996-07-31 | 1997-07-31 | Return path ingress noise measurement system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US2330696P | 1996-07-31 | 1996-07-31 | |
US60/023,306 | 1996-07-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998005164A1 true WO1998005164A1 (en) | 1998-02-05 |
Family
ID=21814319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1997/013516 WO1998005164A1 (en) | 1996-07-31 | 1997-07-31 | Return path ingress noise measurement system |
Country Status (5)
Country | Link |
---|---|
US (1) | US6292944B1 (en) |
EP (1) | EP0916223A4 (en) |
AU (1) | AU724283B2 (en) |
CA (1) | CA2261957C (en) |
WO (1) | WO1998005164A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2398687C (en) * | 2000-05-16 | 2008-09-23 | Comsonics, Inc. | Device and method of determining location of signal ingress |
EP2248536A3 (en) * | 2000-12-14 | 2010-12-08 | The General Hospital Corporation doing business as Massachusetts General Hospital | Topical Aminolevulinic acid-photodynamic therapy for acne vulgaris |
US20060281424A1 (en) * | 2005-06-14 | 2006-12-14 | Oliver Kevin J | Ingress susceptibility on return path |
US8458759B2 (en) * | 2007-06-19 | 2013-06-04 | Arcom Digital, Llc | Method and apparatus for locating network impairments |
US8181211B2 (en) * | 2009-03-30 | 2012-05-15 | John Mezzalingua Associates, Inc. | Total bandwidth conditioning device |
US8752108B2 (en) | 2010-07-21 | 2014-06-10 | Magella Bouchard | System and method for detecting signal ingress interferences |
US8724681B2 (en) | 2011-06-27 | 2014-05-13 | Jds Uniphase Corporation | Ingress noise localization in a cable network |
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 |
US10321169B1 (en) | 2017-12-01 | 2019-06-11 | Viavi Solutions Inc. | Interference profile of a bursty channel |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3731203A (en) * | 1970-09-25 | 1973-05-01 | Gte Sylvania Inc | Monitoring circuit and system for detecting signals in a signal transmission system |
US3846703A (en) * | 1973-02-28 | 1974-11-05 | Tocom | Noise control system for transmission network |
US3886454A (en) * | 1973-08-13 | 1975-05-27 | Rca Corp | Control apparatus for a two-way cable television system |
US4413229A (en) * | 1981-06-02 | 1983-11-01 | Grant William O | Method and apparatus for remote indication of faults in coaxial cable R-F transmission systems |
US4491968A (en) * | 1983-04-07 | 1985-01-01 | Comsonics, Inc. | Status monitor |
US5020134A (en) * | 1989-05-19 | 1991-05-28 | Pecaut Steven C | CATV signal distribution system and local status monitor therefor |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1321543A (en) * | 1919-11-11 | Line-tester | ||
US3750022A (en) * | 1972-04-26 | 1973-07-31 | Hughes Aircraft Co | System for minimizing upstream noise in a subscriber response cable television system |
US3924187A (en) * | 1974-05-14 | 1975-12-02 | Magnavox Co | Two-way cable television system with enhanced signal-to-noise ratio for upstream signals |
US3991363A (en) * | 1975-08-11 | 1976-11-09 | Bell Telephone Laboratories, Incorporated | Method and apparatus for detecting faults in buried insulated conductors |
CA1168707A (en) * | 1980-04-22 | 1984-06-05 | Norscan Instruments Ltd. | Apparatus to monitor electrical cables, including splice joints and the like for the ingress of moisture |
US4520508A (en) | 1982-12-21 | 1985-05-28 | General Instrument Corporation | Subscriber terminal for monitoring radio-frequency signal ingress into cable television systems |
US5208665A (en) | 1987-08-20 | 1993-05-04 | Telaction Corporation | Presentation player for an interactive digital communication system |
CA1317667C (en) | 1987-11-02 | 1993-05-11 | Michel Dufresne | Catv subscriber terminal transmission control |
CA1327238C (en) | 1988-04-21 | 1994-02-22 | Michel Dufresne | Catv network with filters |
US5126840A (en) | 1988-04-21 | 1992-06-30 | Videotron Ltee | Filter circuit receiving upstream signals for use in a CATV network |
US5251324A (en) | 1990-03-20 | 1993-10-05 | Scientific-Atlanta, Inc. | Method and apparatus for generating and collecting viewing statistics for remote terminals in a cable television system |
US5255086A (en) * | 1990-03-20 | 1993-10-19 | Scientific-Atlanta, Inc. | Method and apparatus for RF data transfer in a CATV system |
US5473361A (en) * | 1993-01-19 | 1995-12-05 | Tektronix, Inc. | Cable television test and measurement system |
US5608428A (en) * | 1994-06-09 | 1997-03-04 | Trilithic, Inc. | Radio frequency leakage detection system for CATV system |
US5585842A (en) * | 1994-09-19 | 1996-12-17 | Wavetek Corporation | CATV frequency sweep testing using RF transmitter to generate test signals |
US5608328A (en) * | 1994-11-18 | 1997-03-04 | Radar Engineers | Method and apparatus for pin-pointing faults in electric power lines |
US5881362A (en) * | 1994-11-30 | 1999-03-09 | General Instrument Corporation Of Delaware | Method of ingress noise reduction in calbe return paths |
AU4691496A (en) * | 1995-01-30 | 1996-08-21 | Motorola, Inc. | Method and system for clearing a frequency band |
JPH1093605A (en) * | 1996-05-13 | 1998-04-10 | Toshiba Corp | Cable network system, its transmission line switching device, subscriber device, adapter device, and mixed noise monitor and analysis device |
-
1997
- 1997-07-29 US US08/901,985 patent/US6292944B1/en not_active Expired - Fee Related
- 1997-07-31 AU AU38230/97A patent/AU724283B2/en not_active Ceased
- 1997-07-31 WO PCT/US1997/013516 patent/WO1998005164A1/en not_active Application Discontinuation
- 1997-07-31 EP EP97935244A patent/EP0916223A4/en not_active Withdrawn
- 1997-07-31 CA CA002261957A patent/CA2261957C/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3731203A (en) * | 1970-09-25 | 1973-05-01 | Gte Sylvania Inc | Monitoring circuit and system for detecting signals in a signal transmission system |
US3846703A (en) * | 1973-02-28 | 1974-11-05 | Tocom | Noise control system for transmission network |
US3886454A (en) * | 1973-08-13 | 1975-05-27 | Rca Corp | Control apparatus for a two-way cable television system |
US4413229A (en) * | 1981-06-02 | 1983-11-01 | Grant William O | Method and apparatus for remote indication of faults in coaxial cable R-F transmission systems |
US4491968A (en) * | 1983-04-07 | 1985-01-01 | Comsonics, Inc. | Status monitor |
US5020134A (en) * | 1989-05-19 | 1991-05-28 | Pecaut Steven C | CATV signal distribution system and local status monitor therefor |
Non-Patent Citations (1)
Title |
---|
See also references of EP0916223A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP0916223A4 (en) | 2000-01-12 |
AU3823097A (en) | 1998-02-20 |
CA2261957A1 (en) | 1998-02-05 |
CA2261957C (en) | 2005-01-11 |
US6292944B1 (en) | 2001-09-18 |
EP0916223A1 (en) | 1999-05-19 |
AU724283B2 (en) | 2000-09-14 |
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