FR2300466A1 - Procede et dispositif de codage/decodage dans un modulateur en delta - Google Patents

Procede et dispositif de codage/decodage dans un modulateur en delta

Info

Publication number
FR2300466A1
FR2300466A1 FR7540420A FR7540420A FR2300466A1 FR 2300466 A1 FR2300466 A1 FR 2300466A1 FR 7540420 A FR7540420 A FR 7540420A FR 7540420 A FR7540420 A FR 7540420A FR 2300466 A1 FR2300466 A1 FR 2300466A1
Authority
FR
France
Prior art keywords
coding
decoding method
delta modulator
modulator
delta
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.)
Granted
Application number
FR7540420A
Other languages
English (en)
Other versions
FR2300466B1 (fr
Inventor
Francis P Carrubba
Peter A Franaszek
David D Grossman
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of FR2300466A1 publication Critical patent/FR2300466A1/fr
Application granted granted Critical
Publication of FR2300466B1 publication Critical patent/FR2300466B1/fr
Granted 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]

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)
FR7540420A 1975-02-07 1975-12-30 Procede et dispositif de codage/decodage dans un modulateur en delta Granted FR2300466A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/548,044 US3971987A (en) 1975-02-07 1975-02-07 Gain method and apparatus for a delta modulator

Publications (2)

Publication Number Publication Date
FR2300466A1 true FR2300466A1 (fr) 1976-09-03
FR2300466B1 FR2300466B1 (fr) 1978-05-19

Family

ID=24187170

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7540420A Granted FR2300466A1 (fr) 1975-02-07 1975-12-30 Procede et dispositif de codage/decodage dans un modulateur en delta

Country Status (7)

Country Link
US (1) US3971987A (fr)
JP (1) JPS5542775B2 (fr)
CA (1) CA1077624A (fr)
DE (1) DE2603791C3 (fr)
FR (1) FR2300466A1 (fr)
GB (1) GB1474865A (fr)
IT (1) IT1051883B (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7501341A (nl) * 1975-02-05 1976-08-09 Philips Nv Ontvanger voor de ontvangst van door pulscode- modulatie overgedragen signalen.
US4058805A (en) * 1975-06-16 1977-11-15 Comdial Corporation Digital multitone generator for telephone dialing
HU174987B (hu) * 1976-10-12 1980-04-28 Textilipari Kutato Intezet Oborudovanie k bystromu i massovomu ispytaniju na razryv volokon
US4091242A (en) * 1977-07-11 1978-05-23 International Business Machines Corporation High speed voice replay via digital delta modulation
US4125861A (en) * 1977-08-18 1978-11-14 Bell Telephone Laboratories, Incorporated Video signal encoding
JPS5564316U (fr) * 1978-10-27 1980-05-02
US4208740A (en) * 1978-12-20 1980-06-17 International Business Machines Corporation Adaptive delta modulation system
US4532494A (en) * 1981-01-09 1985-07-30 Tokyo Shibaura Denki Kabushiki Kaisha Adaptive delta codec which varies a delta signal in accordance with a characteristic of an input analog signal
GB2128825A (en) * 1982-10-20 1984-05-02 Dbx Analog to digital and digital to analog converter
GB2133238A (en) * 1982-12-10 1984-07-18 Marconi Co Ltd Coder/decoder arrangements
US4700362A (en) * 1983-10-07 1987-10-13 Dolby Laboratories Licensing Corporation A-D encoder and D-A decoder system
DE60018573T2 (de) * 2000-10-25 2006-01-19 Stmicroelectronics S.R.L., Agrate Brianza Verfahren zur Verbesserung des Signal/Rausch-Verhältnisses eines Sigma/Delta-Modulators und dieses Verfahren benutzender Schaltkreis
US8635328B2 (en) * 2002-10-31 2014-01-21 International Business Machines Corporation Determining time varying thresholds for monitored metrics

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3628148A (en) * 1969-12-23 1971-12-14 Bell Telephone Labor Inc Adaptive delta modulation system
FR2160392A1 (fr) * 1971-11-19 1973-06-29 Ibm
DE2423989A1 (de) * 1973-05-18 1974-11-28 Gen Electric Anordnung zur digitalcodierung bzw. -decodierung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3393364A (en) * 1965-10-23 1968-07-16 Signatron Statistical delta modulation system
NL159548B (nl) * 1968-03-21 1979-02-15 Philips Nv Overdrachtsstelsel voor signaaloverdracht door pulscodemodulatie, alsmede zender en ontvanger voor toepassing in een dergelijk stelsel.
BE754963A (fr) * 1969-08-20 1971-02-01 Western Electric Co Systeme de communication a impulsions codees differentielles
FR2098466A5 (fr) * 1969-10-16 1972-03-10 Ibm France
US3815033A (en) * 1970-12-02 1974-06-04 Bell Telephone Labor Inc Discrete adaptive delta modulation system
US3878465A (en) * 1972-12-15 1975-04-15 Univ Sherbrooke Instantaneous adaptative delta modulation system
US3916314A (en) * 1974-04-08 1975-10-28 Ibm Non-linear filter for delta modulator output using shift register and table lookup

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3628148A (en) * 1969-12-23 1971-12-14 Bell Telephone Labor Inc Adaptive delta modulation system
FR2160392A1 (fr) * 1971-11-19 1973-06-29 Ibm
DE2423989A1 (de) * 1973-05-18 1974-11-28 Gen Electric Anordnung zur digitalcodierung bzw. -decodierung

Also Published As

Publication number Publication date
GB1474865A (en) 1977-05-25
CA1077624A (fr) 1980-05-13
DE2603791A1 (de) 1976-08-19
FR2300466B1 (fr) 1978-05-19
IT1051883B (it) 1981-05-20
JPS5542775B2 (fr) 1980-11-01
JPS51108562A (fr) 1976-09-25
US3971987A (en) 1976-07-27
DE2603791C3 (de) 1985-04-04
DE2603791B2 (de) 1977-12-22

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Legal Events

Date Code Title Description
ST Notification of lapse