BR7402222D0 - Processo e aparelho para comprimir a transmissao em um sistema de transmissao de voz de modulacao delta compandada - Google Patents

Processo e aparelho para comprimir a transmissao em um sistema de transmissao de voz de modulacao delta compandada

Info

Publication number
BR7402222D0
BR7402222D0 BR2222/74A BR222274A BR7402222D0 BR 7402222 D0 BR7402222 D0 BR 7402222D0 BR 2222/74 A BR2222/74 A BR 2222/74A BR 222274 A BR222274 A BR 222274A BR 7402222 D0 BR7402222 D0 BR 7402222D0
Authority
BR
Brazil
Prior art keywords
comprehensed
delta modulation
compressing
transmission system
transmission
Prior art date
Application number
BR2222/74A
Other languages
English (en)
Portuguese (pt)
Inventor
P Smith
Original Assignee
L M Ericsson 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 L M Ericsson Ltd filed Critical L M Ericsson Ltd
Publication of BR7402222D0 publication Critical patent/BR7402222D0/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/001—Two-way communication systems between a limited number of parties
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • 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
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/253—Telephone sets using digital voice transmission

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Analogue/Digital Conversion (AREA)
BR2222/74A 1973-03-21 1974-03-21 Processo e aparelho para comprimir a transmissao em um sistema de transmissao de voz de modulacao delta compandada BR7402222D0 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPB268773 1973-03-21

Publications (1)

Publication Number Publication Date
BR7402222D0 true BR7402222D0 (pt) 1974-12-03

Family

ID=3765655

Family Applications (1)

Application Number Title Priority Date Filing Date
BR2222/74A BR7402222D0 (pt) 1973-03-21 1974-03-21 Processo e aparelho para comprimir a transmissao em um sistema de transmissao de voz de modulacao delta compandada

Country Status (14)

Country Link
US (1) US3995217A (en, 2012)
JP (1) JPS5027418A (en, 2012)
BE (1) BE812634A (en, 2012)
BR (1) BR7402222D0 (en, 2012)
CA (1) CA1064172A (en, 2012)
DE (1) DE2413679A1 (en, 2012)
DK (1) DK146330C (en, 2012)
ES (1) ES424492A1 (en, 2012)
FR (1) FR2222806B1 (en, 2012)
GB (1) GB1427459A (en, 2012)
HU (1) HU170812B (en, 2012)
IT (1) IT1007418B (en, 2012)
NL (1) NL7403838A (en, 2012)
SE (1) SE399159B (en, 2012)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4190801A (en) * 1978-02-06 1980-02-26 Deltalab Research, Inc. Digital encoding circuitry
CN103344849B (zh) * 2013-05-31 2015-05-27 哈尔滨工业大学 一种获取随机解调硬件系统的感知矩阵的方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL277910A (en, 2012) * 1961-05-02
US3500441A (en) * 1967-10-12 1970-03-10 Bell Telephone Labor Inc Delta modulation with discrete companding
US3609551A (en) * 1968-06-28 1971-09-28 Bell Telephone Labor Inc Discrete-continuous companding for a digital transmission system
US3582784A (en) * 1968-10-18 1971-06-01 Bell Telephone Labor Inc Delta modulation system
FR2098466A5 (en, 2012) * 1969-10-16 1972-03-10 Ibm France
FR2082740A5 (en, 2012) * 1970-03-25 1971-12-10 Trt Telecom Radio Electr
US3729678A (en) * 1971-07-20 1973-04-24 Philips Corp Pcm system including a pulse pattern analyzer

Also Published As

Publication number Publication date
ES424492A1 (es) 1976-06-01
DK146330C (da) 1984-03-26
US3995217A (en) 1976-11-30
HU170812B (hu) 1977-09-28
BE812634A (fr) 1974-07-15
GB1427459A (en) 1976-03-10
SE399159B (sv) 1978-01-30
DK146330B (da) 1983-09-05
FR2222806A1 (en, 2012) 1974-10-18
CA1064172A (en) 1979-10-09
IT1007418B (it) 1976-10-30
JPS5027418A (en, 2012) 1975-03-20
DE2413679A1 (de) 1974-10-10
FR2222806B1 (en, 2012) 1977-10-07
NL7403838A (en, 2012) 1974-09-24

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