AR016122A1 - AN APPLIANCE FOR MONITORING NOISE IN A NOISE SENSITIVE TRANSMISSION, A METHOD FOR MONITORING NOISE AND A CABLE TELEVISION NETWORK - Google Patents

AN APPLIANCE FOR MONITORING NOISE IN A NOISE SENSITIVE TRANSMISSION, A METHOD FOR MONITORING NOISE AND A CABLE TELEVISION NETWORK

Info

Publication number
AR016122A1
AR016122A1 ARP980103173A AR016122A1 AR 016122 A1 AR016122 A1 AR 016122A1 AR P980103173 A ARP980103173 A AR P980103173A AR 016122 A1 AR016122 A1 AR 016122A1
Authority
AR
Argentina
Prior art keywords
noise
signal
monitoring
cable television
indication
Prior art date
Application number
Other languages
Spanish (es)
Original Assignee
Raychem Sa Nv
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 Raychem Sa Nv filed Critical Raychem Sa Nv
Publication of AR016122A1 publication Critical patent/AR016122A1/en

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

Se provee un aparato para monitorear el ruido en un medio de transmision sensible al ruido, tal como un cable coaxial (106) que forma parte de unsistema de television por cable. Una proporcion de una senal transmitida es recibida desde un cable coaxial por un dispositivo de acoplamiento (404). La senalrecibida es amplificada por un amplificador logarítmico (408) a fin de reducir el rango dinámico de la senal. La senal amplificadora es comparada conuna pluralidad de niveles de referencia por comparadores (410) para proveer una indicacion de la amplitud de la senal. Las amplitudes son suministradas a unmuestreo por un dispositivo procesador (406) a fin de proveer una indicacion de la duracion de la senal. Además, el ruido de fondo es integrado por unintegrador (409)a fin de proveer una indicacion del ruido ingresado. La invencion también provee un método de monitoreo de ruido y una red de televisionpor cable que emplean dicho aparato.An apparatus for monitoring noise is provided on a noise-sensitive transmission medium, such as a coaxial cable (106) that is part of a cable television system. A proportion of a transmitted signal is received from a coaxial cable by a coupling device (404). The signal received is amplified by a logarithmic amplifier (408) in order to reduce the dynamic range of the signal. The amplifier signal is compared with a plurality of reference levels by comparators (410) to provide an indication of the amplitude of the signal. The amplitudes are supplied for sampling by a processor device (406) in order to provide an indication of the signal duration. In addition, the background noise is integrated by an integrator (409) in order to provide an indication of the noise entered. The invention also provides a noise monitoring method and a cable television network using said apparatus.

ARP980103173 1997-07-01 1998-06-30 AN APPLIANCE FOR MONITORING NOISE IN A NOISE SENSITIVE TRANSMISSION, A METHOD FOR MONITORING NOISE AND A CABLE TELEVISION NETWORK AR016122A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9713790.5A GB9713790D0 (en) 1997-07-01 1997-07-01 Noise monitoring unit

Publications (1)

Publication Number Publication Date
AR016122A1 true AR016122A1 (en) 2001-06-20

Family

ID=10815147

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP980103173 AR016122A1 (en) 1997-07-01 1998-06-30 AN APPLIANCE FOR MONITORING NOISE IN A NOISE SENSITIVE TRANSMISSION, A METHOD FOR MONITORING NOISE AND A CABLE TELEVISION NETWORK

Country Status (3)

Country Link
AR (1) AR016122A1 (en)
GB (1) GB9713790D0 (en)
WO (1) WO1999001989A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2000353C3 (en) * 1969-02-04 1979-11-29 Rai Radiotelevisione Italiana, Rom Method and device for the automatic measurement of the signal-to-noise ratio
US3750022A (en) * 1972-04-26 1973-07-31 Hughes Aircraft Co System for minimizing upstream noise in a subscriber response cable television system
US3875328A (en) * 1973-08-03 1975-04-01 Rca Corp Apparatus and method for measuring the signal to noise ratio for a periodic signal
US4912721A (en) * 1988-04-29 1990-03-27 Scientific-Atlanta, Inc. Cable television spread spectrum data transmission apparatus
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
US5221967A (en) * 1991-05-08 1993-06-22 The University Of British Columbia Signal quality monitoring system
US5473361A (en) * 1993-01-19 1995-12-05 Tektronix, Inc. Cable television test and measurement system
JPH06245212A (en) * 1993-02-15 1994-09-02 Miharu Tsushin Kk Automatic interruption method of noise in incoming direction of two-way catv and automatic noticing method
JPH06253306A (en) * 1993-02-26 1994-09-09 Miharu Tsushin Kk Automatic detecting method for incoming noise of two-way catv system
US5631846A (en) * 1995-02-28 1997-05-20 Lucent Technologies Inc. Upstream communications for interactive networks
US5661529A (en) * 1995-06-07 1997-08-26 The University Of British Columbia Measurement of noise impairments of TV signals
US5742591A (en) * 1995-06-07 1998-04-21 General Instrument Corporation Interference cancellation system for CATV return transmissions

Also Published As

Publication number Publication date
WO1999001989A1 (en) 1999-01-14
GB9713790D0 (en) 1997-09-03

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