BR9908638A - Processador de sinal digital para recepção depadrões múltiplos de televisão - Google Patents

Processador de sinal digital para recepção depadrões múltiplos de televisão

Info

Publication number
BR9908638A
BR9908638A BR9908638-7A BR9908638A BR9908638A BR 9908638 A BR9908638 A BR 9908638A BR 9908638 A BR9908638 A BR 9908638A BR 9908638 A BR9908638 A BR 9908638A
Authority
BR
Brazil
Prior art keywords
audio
standards
video
television
digital signal
Prior art date
Application number
BR9908638-7A
Other languages
English (en)
Inventor
Clyde Robbins
Robert Friedman
Muhammad Fazili
Original Assignee
Gen Instrument Corp
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 Gen Instrument Corp filed Critical Gen Instrument Corp
Publication of BR9908638A publication Critical patent/BR9908638A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/455—Demodulation-circuits
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
    • H04N21/4263—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners
    • H04N21/42638—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners involving a hybrid front-end, e.g. analog and digital tuners
    • 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
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/46—Receiver circuitry for the reception of television signals according to analogue transmission standards for receiving on more than one standard at will
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

"PROCESSADOR DE SINAL DIGITAL PARA RECEPçãO DEPADRõES MúLTIPLOS DE TELEVISãO". Um conversor detelevisão usa processamento de sinal digital (DSP) (12,26) paraproporcionar compatibilidade com diferentes padrões de televisãoincluindo padrões de vídeo NTSC e PAL e padrões de áudio FM,BTSC, DIN, Home Theatre, NICAM e padrões de áudio digitalindependentes. O processamento de áudio (26) é realizado sempassar o áudio através de um filtro Nyquist (72) usado para vídeo.Isso elimina a conversão de AM para PM melhorando a linearidadeda luminância e ganho e fase diferenciais. Isso também impedeque a informação de vídeo module na fase a interportadora deáudio, dessa forma eliminando os componentes de "zumbido," dovídeo no áudio. O processamento de áudio (26) inclui umdemodulador FM síncrono (40) e um demodulador FM/QPSKsíncrono separado (44) para lidar com os diferentes padrões deáudio. A manipulação de padrões históricos de TV analógica comDSP também possibilita a combinação vantajosa de recepção detelevisão analógica e digital em um único VLSI ASIC digital.
BR9908638-7A 1998-03-09 1999-02-26 Processador de sinal digital para recepção depadrões múltiplos de televisão BR9908638A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/037,292 US6147713A (en) 1998-03-09 1998-03-09 Digital signal processor for multistandard television reception
PCT/US1999/004370 WO1999046931A1 (en) 1998-03-09 1999-02-26 Digital signal processor for multistandard television reception

Publications (1)

Publication Number Publication Date
BR9908638A true BR9908638A (pt) 2001-12-18

Family

ID=21893550

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9908638-7A BR9908638A (pt) 1998-03-09 1999-02-26 Processador de sinal digital para recepção depadrões múltiplos de televisão

Country Status (6)

Country Link
US (1) US6147713A (pt)
EP (1) EP1062806A1 (pt)
CN (1) CN1182706C (pt)
AU (1) AU747600B2 (pt)
BR (1) BR9908638A (pt)
WO (1) WO1999046931A1 (pt)

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Also Published As

Publication number Publication date
AU747600B2 (en) 2002-05-16
CN1298605A (zh) 2001-06-06
AU2796099A (en) 1999-09-27
CN1182706C (zh) 2004-12-29
EP1062806A1 (en) 2000-12-27
WO1999046931A1 (en) 1999-09-16
US6147713A (en) 2000-11-14

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Legal Events

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B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 8A,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 1990 DE 25/02/2009.