BR9803241A - Transmissor e receptor de ondas transmitidas por um transmissor para dispositivo de distribuição interna de tv sem cabo - Google Patents

Transmissor e receptor de ondas transmitidas por um transmissor para dispositivo de distribuição interna de tv sem cabo

Info

Publication number
BR9803241A
BR9803241A BR9803241-0A BR9803241A BR9803241A BR 9803241 A BR9803241 A BR 9803241A BR 9803241 A BR9803241 A BR 9803241A BR 9803241 A BR9803241 A BR 9803241A
Authority
BR
Brazil
Prior art keywords
transmitter
receiver
signals
television set
distribution device
Prior art date
Application number
BR9803241-0A
Other languages
English (en)
Inventor
Pierre Chanteau
Frederic Dutilleul
Bernard Finet
Original Assignee
Koninkl Philips Electronics 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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Publication of BR9803241A publication Critical patent/BR9803241A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/38—Transmitter circuitry for the transmission of television signals according to analogue transmission standards
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/20—Adaptations for transmission via a GHz frequency band, e.g. via satellite
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/081—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division the additional information signals being transmitted by means of a subcarrier

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Details Of Television Systems (AREA)
  • Transmitters (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Radio Transmission System (AREA)

Abstract

"TRANSMISSOR E RECEPTOR DE ONDAS TRANSMITIDAS POR UM TRANSMISSOR PARA DISPOSITIVO DE DISTRIBUIçãO INTERNA DE TV SEM CABO". O dispositivo compreende um transmissor (7), que transmite um onda modulada a partir de sinais de vídeo (3) e sinais de áudio (4,5) em um aparelho de televisão, e um receptor (14), que fornece sinais desmodulados a um segundo aparelho de televisão (8). O transmissor (7) adiciona uma portadora adicional modulada por um código secreto aos sinais de televisão, e o receptor (14) separa essa portadora adicional, verifica o código e bloqueia o fornecimento do sinal de vídeo desmodulado ao segundo aparelho de televisão (8) quando esse código não estiver correto. Aplicação: tal dispositivo impede a instalação de cabos dentro de uma residência para o fornecimento de sinais a um segundo aparelho de televisão.
BR9803241-0A 1997-08-27 1998-08-26 Transmissor e receptor de ondas transmitidas por um transmissor para dispositivo de distribuição interna de tv sem cabo BR9803241A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9710688 1997-08-27

Publications (1)

Publication Number Publication Date
BR9803241A true BR9803241A (pt) 1999-10-19

Family

ID=9510525

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9803241-0A BR9803241A (pt) 1997-08-27 1998-08-26 Transmissor e receptor de ondas transmitidas por um transmissor para dispositivo de distribuição interna de tv sem cabo

Country Status (5)

Country Link
EP (1) EP0899957A1 (pt)
JP (1) JPH11155081A (pt)
KR (1) KR19990023906A (pt)
BR (1) BR9803241A (pt)
MY (1) MY123168A (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2805915B1 (fr) * 2000-03-06 2002-08-23 Texas De France Transmetteur audio-video a sources multiples avec emetteur pour le retour de telecommande

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH073966B2 (ja) * 1985-08-29 1995-01-18 パイオニア株式会社 放送受信装置
US5101499A (en) * 1987-09-15 1992-03-31 Jerry R. Iggulden Television local wireless transmission and control
US5056139A (en) * 1990-05-22 1991-10-08 Texas Instruments Incorporated Methods and apparatus for electronically limiting broadcast communication
US5243415A (en) * 1991-04-05 1993-09-07 Primo Microphoes, Inc. Limited range stereo-audio video RF transmitter to multiple receiver system
DE4403729C2 (de) * 1994-02-07 1997-03-13 Gerhard Wittmann Funkempfangsanlage, insbesondere Fernsehanlage, und Verfahren zum Betreiben einer Funkempfangsanlage
DE29509734U1 (de) * 1994-06-27 1995-09-28 Wittmann, Gerhard, 81247 München Vorrichtung und System zur selektiven, altersstufenabhängigen Sperrung oder Freigabe der Bild- und/oder Ton-Wiedergabe von Sendungen sowie Vorrichtung zum Eincodieren einer variablen Altersfreigabe-Kennung
WO1996038994A1 (en) * 1995-06-02 1996-12-05 Dsc Communications Corporation Apparatus and method of authenticating a subscriber terminal in a wireless telecommunications system
DE29607742U1 (de) * 1996-04-29 1996-07-25 Wohlmeiner, Dietmar, 59581 Warstein Funkbetriebenes Satellitenempfangssystem
ATE241365T1 (de) * 1997-08-28 2003-06-15 Univ Washington Saccharid-enthaltende zubereitungen zur behandlung von alzheimerschen erkrankung und von weiteren amyloidosen

Also Published As

Publication number Publication date
MY123168A (en) 2006-05-31
JPH11155081A (ja) 1999-06-08
KR19990023906A (ko) 1999-03-25
EP0899957A1 (fr) 1999-03-03

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Legal Events

Date Code Title Description
B08F Application fees: application dismissed [chapter 8.6 patent gazette]

Free format text: REFERENTE A 9A E 10A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO PUBLICADO NA RPI 1971 DE 14/10/2008.