CA961578A - Transcoder for data exchanges between a delta modulation system and a pcm system - Google Patents

Transcoder for data exchanges between a delta modulation system and a pcm system

Info

Publication number
CA961578A
CA961578A CA128,849A CA128849A CA961578A CA 961578 A CA961578 A CA 961578A CA 128849 A CA128849 A CA 128849A CA 961578 A CA961578 A CA 961578A
Authority
CA
Canada
Prior art keywords
transcoder
data exchanges
delta modulation
pcm
modulation system
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
Application number
CA128,849A
Other languages
English (en)
Other versions
CA128849S (en
Inventor
Marc A. Regnier
Claude P.H. Lerouge
Daniel Bolus
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.)
ITT Canada Ltd
Original Assignee
ITT Canada Ltd
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 ITT Canada Ltd filed Critical ITT Canada Ltd
Application granted granted Critical
Publication of CA961578A publication Critical patent/CA961578A/en
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)
CA128,849A 1970-11-30 1971-11-29 Transcoder for data exchanges between a delta modulation system and a pcm system Expired CA961578A (en)

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
CA961578A true CA961578A (en) 1975-01-21

Family

ID=9064919

Family Applications (1)

Application Number Title Priority Date Filing Date
CA128,849A Expired CA961578A (en) 1970-11-30 1971-11-29 Transcoder for data exchanges between a delta modulation system and a pcm system

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
FR2115686A5 (fr) 1972-07-07
US3750144A (en) 1973-07-31
DE2158549A1 (de) 1972-05-31
CH557621A (fr) 1974-12-31
AU3303671A (en) 1973-03-08

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