HK1047836A1 - Method and apparatus supporting tdd/tty modulationover vocoded channels. - Google Patents

Method and apparatus supporting tdd/tty modulationover vocoded channels.

Info

Publication number
HK1047836A1
HK1047836A1 HK02109400A HK02109400A HK1047836A1 HK 1047836 A1 HK1047836 A1 HK 1047836A1 HK 02109400 A HK02109400 A HK 02109400A HK 02109400 A HK02109400 A HK 02109400A HK 1047836 A1 HK1047836 A1 HK 1047836A1
Authority
HK
Hong Kong
Prior art keywords
signal
vocoder
encoding
modulationover
tty
Prior art date
Application number
HK02109400A
Other versions
HK1047836B (en
Inventor
Nikolai K N Leung
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 HK1047836A1 publication Critical patent/HK1047836A1/en
Publication of HK1047836B publication Critical patent/HK1047836B/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)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Multimedia (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

A method used to encode/decode a low activity communication signal - such as a Baudot tone - for transmission over a telecommunications system (100). The telecommunications system (100) may include any number of wireless links. Once the system (100) is noticed that a low activity signal needs to be transmitted, each vocoder used in the system (100) to encode/decode the signal performs a unique encoding/decoding process. In one embodiment, frames containing errors adversely affecting a signal are delivered to the vocoder and the "soft bits" contained therein are used to determine the original signal transmitted. In another embodiment, encoding of the signal may include encoding the signal using redundancy with the encoded signal being spread across multiple vocoder frames.
HK02109400.3A 1999-08-04 2002-12-30 Method and apparatus supporting tdd/tty modulation over vocoded channels HK1047836B (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 (2)

Publication Number Publication Date
HK1047836A1 true HK1047836A1 (en) 2003-03-07
HK1047836B HK1047836B (en) 2005-07-22

Family

ID=23444188

Family Applications (1)

Application Number Title Priority Date Filing Date
HK02109400.3A HK1047836B (en) 1999-08-04 2002-12-30 Method and apparatus supporting 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) NO20020517L (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
EP0596079B1 (en) * 1992-05-20 2000-07-19 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
MXPA02001199A (en) 2002-07-30
BR0012932A (en) 2003-04-29
AU6523800A (en) 2001-03-05
CN1178438C (en) 2004-12-01
JP2003506968A (en) 2003-02-18
IL147717A0 (en) 2002-08-14
EP1198934A1 (en) 2002-04-24
AU773419B2 (en) 2004-05-27
NO20020517D0 (en) 2002-02-01
KR20020037342A (en) 2002-05-18
NO20020517L (en) 2002-02-01
HK1047836B (en) 2005-07-22
RU2002105522A (en) 2003-09-10
UA70375C2 (en) 2004-10-15
CN1375146A (en) 2002-10-16
WO2001011840A1 (en) 2001-02-15
CA2379973A1 (en) 2001-02-15

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20080803