KR970008904B1 - Codecs with suppression of multiple encoding/decoding across a connection - Google Patents

Codecs with suppression of multiple encoding/decoding across a connection Download PDF

Info

Publication number
KR970008904B1
KR970008904B1 KR89002991A KR890002991A KR970008904B1 KR 970008904 B1 KR970008904 B1 KR 970008904B1 KR 89002991 A KR89002991 A KR 89002991A KR 890002991 A KR890002991 A KR 890002991A KR 970008904 B1 KR970008904 B1 KR 970008904B1
Authority
KR
South Korea
Prior art keywords
codecs
suppression
decoding
connection
multiple encoding
Prior art date
Application number
KR89002991A
Other languages
English (en)
Other versions
KR890015555A (ko
Inventor
Steven L Gay
Richard D Gitlin
John Hartung
Original Assignee
At & T Co
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 At & T Co filed Critical At & T Co
Publication of KR890015555A publication Critical patent/KR890015555A/ko
Application granted granted Critical
Publication of KR970008904B1 publication Critical patent/KR970008904B1/ko

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices
    • H04W88/181—Transcoding devices; Rate adaptation devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation
    • H04B14/046—Systems or methods for reducing noise or bandwidth
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Time-Division Multiplex Systems (AREA)
KR89002991A 1988-03-11 1989-03-11 Codecs with suppression of multiple encoding/decoding across a connection KR970008904B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/166,867 US4924480A (en) 1988-03-11 1988-03-11 Codecs with suppression of multiple encoding/decodings across a connection
US166867 1988-03-11

Publications (2)

Publication Number Publication Date
KR890015555A KR890015555A (ko) 1989-10-30
KR970008904B1 true KR970008904B1 (en) 1997-05-30

Family

ID=22605001

Family Applications (1)

Application Number Title Priority Date Filing Date
KR89002991A KR970008904B1 (en) 1988-03-11 1989-03-11 Codecs with suppression of multiple encoding/decoding across a connection

Country Status (8)

Country Link
US (1) US4924480A (ko)
EP (1) EP0332345B1 (ko)
JP (1) JPH0738617B2 (ko)
KR (1) KR970008904B1 (ko)
CA (1) CA1339517C (ko)
DE (1) DE68923109T2 (ko)
ES (1) ES2073432T3 (ko)
HK (1) HK103996A (ko)

Families Citing this family (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2775846B2 (ja) * 1989-05-11 1998-07-16 三菱電機株式会社 時分割多重化装置
JPH03226051A (ja) * 1990-01-31 1991-10-07 Fujitsu Ltd 変復調器の速度通知方式
SE465797B (sv) * 1990-03-07 1991-10-28 Ericsson Telefon Ab L M Foerfarande att oeverfoera synkroniseringsinformation vid krypterad oeverfoering i ett mobilradiosystem
US5081679A (en) * 1990-07-20 1992-01-14 Ericsson Ge Mobile Communications Holding Inc. Resynchronization of encryption systems upon handoff
US5091942A (en) * 1990-07-23 1992-02-25 Ericsson Ge Mobile Communications Holding, Inc. Authentication system for digital cellular communications
US5131016A (en) * 1991-01-09 1992-07-14 International Business Machines Corporation Communications network data compression control system and method
US5237612A (en) * 1991-03-29 1993-08-17 Ericsson Ge Mobile Communications Inc. Cellular verification and validation system
US5241598A (en) * 1991-05-22 1993-08-31 Ericsson Ge Mobile Communications, Inc. Rolling key resynchronization in cellular verification and validation system
NZ243007A (en) * 1991-06-19 1995-02-24 Ericsson Telefon Ab L M Radio telephony: digital speech codec provided at regional stations for analog transmissions
JPH0514528A (ja) * 1991-07-03 1993-01-22 Fujitsu Ltd 信号中継伝送方式
JPH0522462A (ja) * 1991-07-16 1993-01-29 Fujitsu Ltd 信号中継伝送方式
JPH0563833A (ja) * 1991-09-02 1993-03-12 Nippon Telegr & Teleph Corp <Ntt> 音声符号無変換通信制御方式
GB2271485B (en) * 1992-10-08 1996-05-08 Richard John Hocking Telecommunication apparatus
US5539908A (en) * 1992-11-24 1996-07-23 International Business Machines Corporation Dynamically linked and shared compression/decompression
FR2700087B1 (fr) * 1992-12-30 1995-02-10 Alcatel Radiotelephone Procédé de positionnement adaptatif d'un codeur/décodeur de parole au sein d'une infrastructure de communication.
US5551073A (en) * 1993-02-25 1996-08-27 Ericsson Inc. Authentication key entry in cellular radio system
KR100188984B1 (ko) * 1993-12-02 1999-06-01 안쏘니 제이. 살리, 주니어 통신 시스템의 지역 엔터티들간 통신 방법 및 장치
US7266186B1 (en) 1994-01-05 2007-09-04 Intellect Wireless Inc. Method and apparatus for improved paging receiver and system
DE4405659C1 (de) * 1994-02-22 1995-04-06 Fraunhofer Ges Forschung Verfahren zum kaskadierten Codieren und Decodieren von Audiodaten
CA2158298A1 (en) * 1994-09-22 1996-03-23 Haim Guata Digital speech communication system
FI100079B (fi) * 1994-11-09 1997-09-15 Nokia Telecommunications Oy Menetelmä koodauksen toteuttamiseksi solukkoradioverkossa
GB9507058D0 (en) * 1995-04-05 1995-05-31 Newbridge Networks Corp Super tandem high capacity voice transmission system
FI101439B (fi) * 1995-04-13 1998-06-15 Nokia Telecommunications Oy Transkooderi, jossa on tandem-koodauksen esto
US5734979A (en) 1995-05-04 1998-03-31 Interwave Communications International, Ltd. Cellular base station with intelligent call routing
DE19516078B4 (de) * 1995-05-05 2006-06-08 Robert Bosch Gmbh Verfahren zur Übertragung von Daten, insbesondere GSM-Daten
US5758256A (en) * 1995-06-07 1998-05-26 Hughes Electronics Corporation Method of transporting speech information in a wireless cellular system
ZA964331B (en) * 1995-06-08 1996-12-17 Qualcomm Inc Remote vocoding over long distance link
US5867784A (en) * 1995-07-05 1999-02-02 Telefonaktiebolaget Lm Ericsson Call forwarding in a mobile communication system
DE19544367A1 (de) 1995-11-29 1997-06-05 Bosch Gmbh Robert Verfahren zum Übertragen von Daten, insbesondere von GSM-Daten
FI102445B1 (fi) * 1996-02-08 1998-11-30 Nokia Telecommunications Oy Transmissiolaitteisto keskusten väliselle yhteydelle
EP0831671B1 (de) * 1996-08-29 2004-04-21 Siemens Aktiengesellschaft Verfahren und Kommunikationssystem zum Übermitteln von komprimierten Sprachinformationen in einem Kommunikationsnetz
EP0847210B1 (de) * 1996-12-04 2006-01-04 Robert Bosch Gmbh Verfahren zum Übertragen von Daten, insbesondere von GSM-Daten
FI106082B (fi) * 1996-12-05 2000-11-15 Nokia Networks Oy Menetelmä puhekanavan takaisinkytkemisen havaitsemiseksi sekä puheenkäsittelylaite
GB2320166A (en) * 1996-12-09 1998-06-10 Motorola Ltd method of reverting to tandem operation between transcoders of a communication system
US6069888A (en) * 1997-02-26 2000-05-30 Qualcomm Inc. Integrated voice mail system for CDMA network
US6021136A (en) * 1997-07-30 2000-02-01 At&T Corp. Telecommunication network that reduces tandeming of compressed voice packets
AU9404098A (en) * 1997-09-23 1999-04-12 Voxware, Inc. Scalable and embedded codec for speech and audio signals
US6108560A (en) * 1997-09-26 2000-08-22 Nortel Networks Corporation Wireless communications system
JPH11136710A (ja) * 1997-10-28 1999-05-21 Fujitsu Ltd セル伝送ネットワークにおける通信データのディジタル１リンク中継システム
US6327053B1 (en) 1997-12-12 2001-12-04 Nortel Networks Limited Facsimile signal transmission with suppression of multiple modulation and demodulation across a connection
DE19756191A1 (de) * 1997-12-17 1999-06-24 Ericsson Telefon Ab L M Verfahren, Vermittlungseinrichtung und Telekommunikationssystem zum Ausführen von Datenkommunikationen zwischen Teilnehmerstationen
US5968149A (en) * 1998-01-07 1999-10-19 International Business Machines Corporation Tandem operation of input/output data compression modules
RU2144264C1 (ru) 1998-11-05 2000-01-10 ЯН Давид Евгеньевич Способ беспроводной передачи и приема кодовой информации на расстоянии (варианты) и портативное устройство для беспроводной передачи кодовой информации на расстоянии
AU2831099A (en) 1999-02-04 2000-08-25 Nokia Networks Oy Tone detection elimination
FI108767B (fi) * 1999-02-24 2002-03-15 Ericsson Telefon Ab L M Puhelunmuodostus tietoliikennejärjestelmässä
FR2803476B1 (fr) * 1999-12-31 2003-01-10 Cit Alcatel Procede d'etablissement de mode de fonctionnement sans double transcodage dans un systeme cellulaire de radiocommunications mobiles
JP3783829B2 (ja) * 2000-02-08 2006-06-07 三菱電機株式会社 ディジタル回線多重化装置
DE10013798C1 (de) * 2000-03-20 2001-09-20 Siemens Ag Verfahren zur Überwachung der Übertragungsqualität in einem zellularen Funk-Kommunikationssystem
US6754187B1 (en) * 2000-04-06 2004-06-22 Inter-Tel, Inc. Performance enhancement system for digital PBX
JP3761795B2 (ja) * 2000-04-10 2006-03-29 三菱電機株式会社 ディジタル回線多重化装置
US7170988B2 (en) * 2003-10-27 2007-01-30 Motorola, Inc. Method and apparatus for network communication
JP4343224B2 (ja) 2004-05-21 2009-10-14 三菱電機株式会社 移動体パケット通信システ厶
US9426476B2 (en) 2012-07-09 2016-08-23 Hewlett-Packard Development Company, L.P. Video stream

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2115686A5 (ko) * 1970-11-30 1972-07-07 Labo Cent Telecommunicat
US3761610A (en) * 1971-02-16 1973-09-25 Graphics Sciences Inc High speed fascimile systems
US4001693A (en) * 1975-05-12 1977-01-04 General Electric Company Apparatus for establishing communication between a first radio transmitter and receiver and a second radio transmitter and receiver
US4322842A (en) * 1979-10-23 1982-03-30 Altran Electronics Broadcast system for distribution automation and remote metering
US4453259A (en) * 1982-04-20 1984-06-05 Trw Inc. Digital synchronization technique
NL8401443A (nl) * 1984-05-07 1985-12-02 Philips Nv Telecommunicatiesysteem in het bijzonder een telefoonsysteem.
US4663766A (en) * 1984-10-10 1987-05-05 Paradyne Corporation Method of determining automatically the rate of data signals in a modem
US4751736A (en) * 1985-01-31 1988-06-14 Communications Satellite Corporation Variable bit rate speech codec with backward-type prediction and quantization
US4748638A (en) * 1985-10-30 1988-05-31 Microcom, Inc. Data telecommunications system and method for transmitting compressed data
DE3603751A1 (de) * 1986-02-06 1987-08-13 Siemens Ag Informationsuebergabesystem zur uebergabe von binaeren informationen
JPH07120989B2 (ja) * 1986-02-12 1995-12-20 株式会社日立製作所 圧縮多重化装置

Also Published As

Publication number Publication date
US4924480A (en) 1990-05-08
KR890015555A (ko) 1989-10-30
EP0332345A3 (en) 1991-09-11
HK103996A (en) 1996-06-21
JPH01272330A (ja) 1989-10-31
JPH0738617B2 (ja) 1995-04-26
CA1339517C (en) 1997-10-28
ES2073432T3 (es) 1995-08-16
DE68923109D1 (de) 1995-07-27
DE68923109T2 (de) 1996-05-15
EP0332345B1 (en) 1995-06-21
EP0332345A2 (en) 1989-09-13

Similar Documents

Publication Publication Date Title
KR970008904B1 (en) Codecs with suppression of multiple encoding/decoding across a connection
GB2173679B (en) Speech coding
GB2256517B (en) Information encoding
EP0288281A3 (en) Adpcm encoding and decoding systems
GB2216755B (en) A syndrome sequential decoder
HK136096A (en) Signal coding
GB8622170D0 (en) Coding digital video signal
EP0355850A3 (en) Sequential decoder
GR3023926T3 (en) Perceptual coding of audio signals
GB8804811D0 (en) Waveform encoder/decoder
GB2214751B (en) Video signal coding
AU577186B2 (en) Encoding or decoding circuit
AU3378089A (en) Encoding and decoding methods
GB8414939D0 (en) A/d coders and decoders
GB2173971B (en) Pal coders and decoders
AU572556B2 (en) A/d encoder and decoder
PT83688A (en) Mutant coding sequence
GB8826774D0 (en) Decoding arrangements
HK130196A (en) Speech coding
AU2388384A (en) Amphoteric resin
GB2149156B (en) A method of encoding and decoding
GB8504695D0 (en) Signal encoding/decoding
GB8800120D0 (en) Speech coding
GB8801998D0 (en) Speech coding
ZA84279B (en) A deck chair

Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
O035 Opposition [patent]: request for opposition
O122 Withdrawal of opposition [patent]
E701 Decision to grant or registration of patent right
O073 Decision to grant registration after opposition [patent]: decision to grant registration
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20090225

Year of fee payment: 12

LAPS Lapse due to unpaid annual fee