DE68907098D1 - Differentieller kodierer mit auto-adaptivem praediktorfilter und dazugehoerigem dekodierer. - Google Patents

Differentieller kodierer mit auto-adaptivem praediktorfilter und dazugehoerigem dekodierer.

Info

Publication number
DE68907098D1
DE68907098D1 DE8989400702T DE68907098T DE68907098D1 DE 68907098 D1 DE68907098 D1 DE 68907098D1 DE 8989400702 T DE8989400702 T DE 8989400702T DE 68907098 T DE68907098 T DE 68907098T DE 68907098 D1 DE68907098 D1 DE 68907098D1
Authority
DE
Germany
Prior art keywords
auto
differential encoder
adaptive predictor
predictor filter
related decoder
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE8989400702T
Other languages
English (en)
Other versions
DE68907098T2 (de
Inventor
Frederic Zurcher Frede Zurcher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Orange SA
Original Assignee
France Telecom SA
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 France Telecom SA filed Critical France Telecom SA
Publication of DE68907098D1 publication Critical patent/DE68907098D1/de
Application granted granted Critical
Publication of DE68907098T2 publication Critical patent/DE68907098T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/02—Delta modulation, i.e. one-bit differential modulation
    • H03M3/022—Delta modulation, i.e. one-bit differential modulation with adaptable step size, e.g. adaptive delta modulation [ADM]
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/04—Differential modulation with several bits, e.g. differential pulse code modulation [DPCM]
    • H03M3/042—Differential modulation with several bits, e.g. differential pulse code modulation [DPCM] with adaptable step size, e.g. adaptive differential pulse code modulation [ADPCM]

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
DE89400702T 1988-03-14 1989-03-14 Differentieller Kodierer mit auto-adaptivem Prädiktorfilter und dazugehörigem Dekodierer. Expired - Fee Related DE68907098T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR888803288A FR2628589B1 (fr) 1988-03-14 1988-03-14 Codeur differentiel a filtre predicteur auto-adaptatif et decodeur utilisable en liaison avec un tel codeur

Publications (2)

Publication Number Publication Date
DE68907098D1 true DE68907098D1 (de) 1993-07-22
DE68907098T2 DE68907098T2 (de) 1993-09-30

Family

ID=9364237

Family Applications (1)

Application Number Title Priority Date Filing Date
DE89400702T Expired - Fee Related DE68907098T2 (de) 1988-03-14 1989-03-14 Differentieller Kodierer mit auto-adaptivem Prädiktorfilter und dazugehörigem Dekodierer.

Country Status (5)

Country Link
US (1) US4939749A (de)
EP (1) EP0334714B1 (de)
JP (1) JPH01273430A (de)
DE (1) DE68907098T2 (de)
FR (1) FR2628589B1 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2664446B1 (fr) * 1990-07-03 1992-10-23 France Etat Codeur differentiel a filtre predicteur auto-adaptatif a adaptation rapide de gain et decodeur correspondant.
GB9024515D0 (en) * 1990-11-12 1991-01-02 Texas Instruments Ltd Improvements in or relating to digital communications
US5259001A (en) * 1991-12-17 1993-11-02 Motorola, Inc. ADPCM decoder with an integral digital receive gain and method therefor
US5261790A (en) * 1992-02-03 1993-11-16 General Electric Company Retention device for turbine blade damper
US5844922A (en) * 1993-02-22 1998-12-01 Qualcomm Incorporated High rate trellis coding and decoding method and apparatus
CA2127520C (en) * 1994-07-06 2001-01-16 Gordon J. Reesor Signal processing circuit
US5694126A (en) * 1995-03-20 1997-12-02 Oki Data Corporation Adaptive predictive data compression method and apparatus
FI114248B (fi) * 1997-03-14 2004-09-15 Nokia Corp Menetelmä ja laite audiokoodaukseen ja audiodekoodaukseen
US20050075866A1 (en) * 2003-10-06 2005-04-07 Bernard Widrow Speech enhancement in the presence of background noise
WO2006042142A2 (en) * 2004-10-07 2006-04-20 Bernard Widrow Cognitive memory and auto-associative neural network based pattern recognition and searching
US20100312734A1 (en) * 2005-10-07 2010-12-09 Bernard Widrow System and method for cognitive memory and auto-associative neural network based pattern recognition
DE102007010697A1 (de) 2007-03-06 2008-09-11 Jungheinrich Aktiengesellschaft Flurförderzeug
NL2002377C2 (nl) * 2008-12-24 2010-06-28 Exsilent Res Bv Werkwijze en inrichting voor het coderen en/of decoderen van een reeks discrete bronwaarden en informatiedrager voorzien van een gecodeerde reeks bronwaarden.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2445660A1 (fr) * 1978-12-28 1980-07-25 Pissard Andre Procede et circuit de transmission de type mic differentiel a prediction adaptive, utilisant un filtrage par sous-bandes et une analyse spectrale
US4411003A (en) * 1981-07-20 1983-10-18 Communication Satellite Corporation Multiple-loop adaptive delta modulator
GB2159674B (en) * 1984-04-19 1987-09-09 Motorola Israel Ltd A delta modulator/demodulator
US4797902A (en) * 1984-12-29 1989-01-10 Sony Corporation Digital signal transmission device
US4654863A (en) * 1985-05-23 1987-03-31 At&T Bell Laboratories Wideband adaptive prediction
US4691233A (en) * 1986-09-30 1987-09-01 Rca Corporation Rate buffer control of difference signal decimation and interpolation for adaptive differential pulse code modulator

Also Published As

Publication number Publication date
FR2628589A1 (fr) 1989-09-15
EP0334714A1 (de) 1989-09-27
US4939749A (en) 1990-07-03
EP0334714B1 (de) 1993-06-16
DE68907098T2 (de) 1993-09-30
FR2628589B1 (fr) 1994-03-04
JPH01273430A (ja) 1989-11-01

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee