FR2115686A5 - - Google Patents

Info

Publication number
FR2115686A5
FR2115686A5 FR7042943A FR7042943A FR2115686A5 FR 2115686 A5 FR2115686 A5 FR 2115686A5 FR 7042943 A FR7042943 A FR 7042943A FR 7042943 A FR7042943 A FR 7042943A FR 2115686 A5 FR2115686 A5 FR 2115686A5
Authority
FR
France
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
Application number
FR7042943A
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.)
Laboratoire Central de Telecommunications SA
Original Assignee
Laboratoire Central de Telecommunications 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 Laboratoire Central de Telecommunications SA filed Critical Laboratoire Central de Telecommunications SA
Priority to FR7042943A priority Critical patent/FR2115686A5/fr
Priority to AU33036/71A priority patent/AU455036B2/en
Priority to DE19712158549 priority patent/DE2158549A1/de
Priority to GB5478171A priority patent/GB1321346A/en
Priority to CH1721871A priority patent/CH557621A/fr
Priority to US00202476A priority patent/US3750144A/en
Priority to CA128,849A priority patent/CA961578A/en
Priority to BE775993A priority patent/BE775993A/fr
Application granted granted Critical
Publication of FR2115686A5 publication Critical patent/FR2115686A5/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3002—Conversion to or from differential modulation
    • H03M7/3048—Conversion to or from one-bit differential modulation only, e.g. delta modulation [DM]

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Time-Division Multiplex Systems (AREA)
FR7042943A 1970-11-30 1970-11-30 Expired FR2115686A5 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
FR7042943A FR2115686A5 (fr) 1970-11-30 1970-11-30
AU33036/71A AU455036B2 (en) 1971-09-02 Pcm-delta code converter
DE19712158549 DE2158549A1 (de) 1970-11-30 1971-11-25 Anordnung zur Codeumsetzung zwischen einem System mit Deltamodulation und einem System mit Pulscodemodulation
GB5478171A GB1321346A (en) 1970-11-30 1971-11-25 Pcm/delta code converter
CH1721871A CH557621A (fr) 1970-11-30 1971-11-26 Traducteur permettant l'echange d'informations entre un reseau de telecommunications en modulation par impulsions codees et un reseau en modulation differentielle.
US00202476A US3750144A (en) 1970-11-30 1971-11-26 Transcoder for data exchanges between a delta modulation system and a pcm system
CA128,849A CA961578A (en) 1970-11-30 1971-11-29 Transcoder for data exchanges between a delta modulation system and a pcm system
BE775993A BE775993A (fr) 1970-11-30 1971-11-30 Traducteur permettant l'echange d'informations entre un reseau telephonique en modulation codee d'impulsions et un reseau en modulation differentielle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7042943A FR2115686A5 (fr) 1970-11-30 1970-11-30

Publications (1)

Publication Number Publication Date
FR2115686A5 true FR2115686A5 (fr) 1972-07-07

Family

ID=9064919

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7042943A Expired FR2115686A5 (fr) 1970-11-30 1970-11-30

Country Status (7)

Country Link
US (1) US3750144A (fr)
BE (1) BE775993A (fr)
CA (1) CA961578A (fr)
CH (1) CH557621A (fr)
DE (1) DE2158549A1 (fr)
FR (1) FR2115686A5 (fr)
GB (1) GB1321346A (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916107A (en) * 1972-10-06 1975-10-28 Bell Telephone Labor Inc Digital system for reclocking pulse code modulation circuits
DE2264179C3 (de) * 1972-12-29 1975-10-09 Siemens Ag, 1000 Berlin Und 8000 Muenchen Digitales Zeitmultiptexvermittlungsverfahren für Pulscodemodulation und Pulsdeltamodulation
US4035724A (en) * 1974-05-08 1977-07-12 Universite De Sherbrooke Digital converter from continuous variable slope delta modulation to pulse code modulation
CA1068822A (fr) * 1974-06-24 1979-12-25 Ching-Long Song Convertisseur numerique-analogique pour systeme de communication
US3937897A (en) * 1974-07-25 1976-02-10 North Electric Company Signal coding for telephone communication system
US4044306A (en) * 1974-07-26 1977-08-23 Universite De Snerbrooke Digital converter from pulse code modulation to continuous variable slope delta modulation
US4057797A (en) * 1975-12-03 1977-11-08 Stromberg-Carlson Corporation All digital delta to PCM converter
US4128832A (en) * 1976-01-08 1978-12-05 Ncr Corporation Combined encoder/decoder
US4924480A (en) * 1988-03-11 1990-05-08 American Telephone And Telegraph Company Codecs with suppression of multiple encoding/decodings across a connection

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL300482A (fr) * 1962-11-13
US3588364A (en) * 1967-06-19 1971-06-28 Nat Defense Canada Adaptive encoder and decoder
US3526855A (en) * 1968-03-18 1970-09-01 Bell Telephone Labor Inc Pulse code modulation and differential pulse code modulation encoders
BE758268A (fr) * 1969-11-04 1971-04-01 Ibm Procede et systeme de codage comprime de quantites sous forme digitale

Also Published As

Publication number Publication date
GB1321346A (en) 1973-06-27
BE775993A (fr) 1972-05-30
US3750144A (en) 1973-07-31
DE2158549A1 (de) 1972-05-31
CH557621A (fr) 1974-12-31
AU3303671A (en) 1973-03-08
CA961578A (en) 1975-01-21

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Legal Events

Date Code Title Description
ST Notification of lapse