BR9714304A - Codifcador btsc - Google Patents

Codifcador btsc

Info

Publication number
BR9714304A
BR9714304A BR9714304-9A BR9714304A BR9714304A BR 9714304 A BR9714304 A BR 9714304A BR 9714304 A BR9714304 A BR 9714304A BR 9714304 A BR9714304 A BR 9714304A
Authority
BR
Brazil
Prior art keywords
digital
signal
filtered
generate
signals
Prior art date
Application number
BR9714304-9A
Other languages
English (en)
Other versions
BR9714304B1 (pt
Inventor
Christopher M Hanna
Original Assignee
That 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 That Corp filed Critical That Corp
Publication of BR9714304A publication Critical patent/BR9714304A/pt
Publication of BR9714304B1 publication Critical patent/BR9714304B1/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/86—Arrangements characterised by the broadcast information itself
    • H04H20/88—Stereophonic broadcast systems
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • 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
    • H04N5/602—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for digital sound signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/06—Systems for the simultaneous transmission of one television signal, i.e. both picture and sound, by more than one carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation 
    • H04S5/02—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation  of the pseudo four-channel type, e.g. in which rear channel signals are derived from two-channel stereo signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Mathematical Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereophonic System (AREA)
  • Stereo-Broadcasting Methods (AREA)

Abstract

"CODIFICADOR BTSC". Trata-se de um codificador BTSC (200) que inclui um filtro de banda alta digital esquerdo (212) para receber um sinal de áudio digital do canal esquerdo (L) e gerar um sinal digital esquerdo filtrado; um filtro de banda alta digital direito (214) para receber um sinal de áudio digital do canal direito (R) e gerar um sinal digital direito filtrado; uma matriz inclui um adicionador (216) para somar os sinais digitais filtrados esquerdo e direito e gerar um sinal de soma digital (L+R) e incluindo um subtraidor (218) para subtrair um dos sinais filtrados digitais esquerdo e direito do outro dos sinais digitais filtrados esquerdo e direito e gerar um sinal de diferença digital (L-R); um processador do canal de diferença (230) para processar de forma digital o sinal de diferença digital (L-R); e um processador do canal de soma (220) para processar de forma digital o sinal de soma digital (L+R).
BRPI9714304-9A 1996-06-07 1997-06-02 codificador btsc. BR9714304B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/661,412 US5796842A (en) 1996-06-07 1996-06-07 BTSC encoder
US08/661.412 1996-06-07
PCT/US1997/009493 WO1997047102A1 (en) 1996-06-07 1997-06-02 Btsc encoder

Publications (2)

Publication Number Publication Date
BR9714304A true BR9714304A (pt) 2000-05-02
BR9714304B1 BR9714304B1 (pt) 2011-02-08

Family

ID=24653490

Family Applications (4)

Application Number Title Priority Date Filing Date
BRPI9715316-8A BR9715316B1 (pt) 1996-06-07 1997-06-02 codificador btsc.
BRPI9715315-0A BR9715315B1 (pt) 1996-06-07 1997-06-02 sistema de ponderação de sinal digital adaptativo.
BRPI9714304-9A BR9714304B1 (pt) 1996-06-07 1997-06-02 codificador btsc.
BRPI9715353-2A BR9715353B1 (pt) 1996-06-07 1997-06-02 codificador btsc.

Family Applications Before (2)

Application Number Title Priority Date Filing Date
BRPI9715316-8A BR9715316B1 (pt) 1996-06-07 1997-06-02 codificador btsc.
BRPI9715315-0A BR9715315B1 (pt) 1996-06-07 1997-06-02 sistema de ponderação de sinal digital adaptativo.

Family Applications After (1)

Application Number Title Priority Date Filing Date
BRPI9715353-2A BR9715353B1 (pt) 1996-06-07 1997-06-02 codificador btsc.

Country Status (11)

Country Link
US (16) US5796842A (pt)
EP (2) EP2339766A3 (pt)
JP (7) JP2000513888A (pt)
CN (3) CN102890932B (pt)
AR (3) AR013578A1 (pt)
AU (1) AU739719B2 (pt)
BR (4) BR9715316B1 (pt)
CA (1) CA2255925C (pt)
HK (3) HK1020240A1 (pt)
TW (1) TW401713B (pt)
WO (1) WO1997047102A1 (pt)

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TW401713B (en) 2000-08-11
BR9715316B1 (pt) 2012-07-10
JP2000513888A (ja) 2000-10-17
EP2339766A3 (en) 2014-02-26
HK1178666A1 (zh) 2013-09-13
JP4746647B2 (ja) 2011-08-10
JP2012234224A (ja) 2012-11-29
US20110134992A1 (en) 2011-06-09
WO1997047102A1 (en) 1997-12-11
JP2013015855A (ja) 2013-01-24
AR013578A1 (es) 2001-01-10
US20120087502A1 (en) 2012-04-12
US20080137871A1 (en) 2008-06-12
HK1020240A1 (en) 2000-03-31
CN101232334B (zh) 2012-09-05
US20110103466A1 (en) 2011-05-05
BR9714304B1 (pt) 2011-02-08
US6118879A (en) 2000-09-12
AU3226297A (en) 1998-01-05
US20120082206A1 (en) 2012-04-05
US20110235705A1 (en) 2011-09-29
CN101232334A (zh) 2008-07-30
US20080095378A1 (en) 2008-04-24
AR024439A2 (es) 2002-10-02
AU739719B2 (en) 2001-10-18
US20080095379A1 (en) 2008-04-24
CN1221528A (zh) 1999-06-30
EP2339766A2 (en) 2011-06-29
JP2008203891A (ja) 2008-09-04
US8284954B2 (en) 2012-10-09
US20110205429A1 (en) 2011-08-25
JP5538501B2 (ja) 2014-07-02
CA2255925C (en) 2005-01-11
US20080095380A1 (en) 2008-04-24
JP2008242475A (ja) 2008-10-09
US20080095377A1 (en) 2008-04-24
US5796842A (en) 1998-08-18
CN102890932B (zh) 2016-07-06
AR024581A2 (es) 2002-10-16
US20080095381A1 (en) 2008-04-24
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US20080095376A1 (en) 2008-04-24
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JP2008242476A (ja) 2008-10-09
CA2255925A1 (en) 1997-12-11
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CN100362777C (zh) 2008-01-16
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CN102890932A (zh) 2013-01-23
BR9715315B1 (pt) 2011-08-23

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