BR0012932A - Method and equipment with support for tdd / tty modulation over vocoded channels - Google Patents

Method and equipment with support for tdd / tty modulation over vocoded channels

Info

Publication number
BR0012932A
BR0012932A BR0012932-1A BR0012932A BR0012932A BR 0012932 A BR0012932 A BR 0012932A BR 0012932 A BR0012932 A BR 0012932A BR 0012932 A BR0012932 A BR 0012932A
Authority
BR
Brazil
Prior art keywords
signal
vocoder
tdd
encoding
equipment
Prior art date
Application number
BR0012932-1A
Other languages
Portuguese (pt)
Inventor
Nikolai K N Leunge
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of BR0012932A publication Critical patent/BR0012932A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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
    • G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72475—User interfaces specially adapted for cordless or mobile telephones specially adapted for disabled users
    • H04M1/72478—User interfaces specially adapted for cordless or mobile telephones specially adapted for disabled users for hearing-impaired users
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Computational Linguistics (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Telephonic Communication Services (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Dc Digital Transmission (AREA)

Abstract

"MéTODO E EQUIPAMENTO COM SUPORTE à MODULAçãO TDD/TTY ATRAVéS DE CANAIS VOCODIFICADOS". Um método usado para codificar / decodificar um sinal de comunicação de baixa atividade - tal como um tom Baudot - para transmissão através de um sistema de telecomunicações (100). O sistema de telecomunicações (100) pode incluir qualquer número de links sem fio. Uma vez que o sistema (100) note que um sinal de baixa atividade deve ser transmitido, cada vocoder usado no sistema (100) para codificar / decodificar o sinal efetua um processo exclusivo de codificação / decodificação. Em uma modalidade, frames contendo erros que afetam adversamente um sinal são passados ao vocoder e os "bits soft" ali contidos são usados para determinar o sinal transmitido original. Em outra modalidade, a codificação do sinal pode incluir codificação do sinal pelo uso de redundância, com o sinal sendo espalhado através de múltiplos frames do vocoder."METHOD AND EQUIPMENT SUPPORTING TDD / TTY MODULATION THROUGH VOCODIFIED CHANNELS". A method used to encode / decode a low activity communication signal - such as a Baudot tone - for transmission over a telecommunications system (100). Telecommunication system 100 may include any number of wireless links. Since system 100 notes that a low activity signal must be transmitted, each vocoder used in system 100 to encode / decode the signal performs a unique encoding / decoding process. In one embodiment, frames containing errors adversely affecting a signal are passed to the vocoder and the soft bits contained therein are used to determine the original transmitted signal. In another embodiment, signal encoding may include signal encoding by use of redundancy, with the signal being spread across multiple vocoder frames.

BR0012932-1A 1999-08-04 2000-08-03 Method and equipment with support for tdd / tty modulation over vocoded channels BR0012932A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US36671499A 1999-08-04 1999-08-04
PCT/US2000/021441 WO2001011840A1 (en) 1999-08-04 2000-08-03 Method and apparatus supporting tdd/tty modulation over vocoded channels

Publications (1)

Publication Number Publication Date
BR0012932A true BR0012932A (en) 2003-04-29

Family

ID=23444188

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0012932-1A BR0012932A (en) 1999-08-04 2000-08-03 Method and equipment with support for tdd / tty modulation over vocoded channels

Country Status (14)

Country Link
EP (1) EP1198934A1 (en)
JP (1) JP2003506968A (en)
KR (1) KR20020037342A (en)
CN (1) CN1178438C (en)
AU (1) AU773419B2 (en)
BR (1) BR0012932A (en)
CA (1) CA2379973A1 (en)
HK (1) HK1047836B (en)
IL (1) IL147717A0 (en)
MX (1) MXPA02001199A (en)
NO (1) NO20020517D0 (en)
RU (1) RU2002105522A (en)
UA (1) UA70375C2 (en)
WO (1) WO2001011840A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR0313259A (en) 2002-08-06 2005-06-14 Siemens Ag Error handling of useful information received through a communication network
US9226123B2 (en) * 2013-02-21 2015-12-29 Telefonaktiebolaget L M Ericsson (Publ) Limiting processing of calls as text telephony calls

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU4252493A (en) * 1992-05-20 1993-12-13 Ultratec, Inc. Telecommunication device operating under an enhanced TDD protocol
FI100932B (en) * 1995-04-12 1998-03-13 Nokia Telecommunications Oy Transmission of audio frequency signals in a radiotelephone system
WO1998027758A2 (en) * 1996-12-19 1998-06-25 Diva Communications Methods and apparatus of providing transparency of dtmf signaling tones across a digital cellular voice channel
US6434198B1 (en) * 1998-08-28 2002-08-13 Lucent Technologies Inc. Method for conveying TTY signals over wireless communication systems

Also Published As

Publication number Publication date
AU773419B2 (en) 2004-05-27
RU2002105522A (en) 2003-09-10
EP1198934A1 (en) 2002-04-24
MXPA02001199A (en) 2002-07-30
NO20020517L (en) 2002-02-01
CA2379973A1 (en) 2001-02-15
UA70375C2 (en) 2004-10-15
CN1178438C (en) 2004-12-01
IL147717A0 (en) 2002-08-14
HK1047836A1 (en) 2003-03-07
HK1047836B (en) 2005-07-22
JP2003506968A (en) 2003-02-18
WO2001011840A1 (en) 2001-02-15
KR20020037342A (en) 2002-05-18
CN1375146A (en) 2002-10-16
AU6523800A (en) 2001-03-05
NO20020517D0 (en) 2002-02-01

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Legal Events

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

Free format text: REFERENTE A 5A, 6A E 7A 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 8.6 PUBLICADO NA RPI 1927 DE 11/12/2007.

B15K Others concerning applications: alteration of classification

Ipc: H04M 1/725 (2006.01), H04L 1/08 (2006.01), H04L 29