ES390644A1 - Pulse code modulation transmitter - Google Patents

Pulse code modulation transmitter

Info

Publication number
ES390644A1
ES390644A1 ES390644A ES390644A ES390644A1 ES 390644 A1 ES390644 A1 ES 390644A1 ES 390644 A ES390644 A ES 390644A ES 390644 A ES390644 A ES 390644A ES 390644 A1 ES390644 A1 ES 390644A1
Authority
ES
Spain
Prior art keywords
circuit
pulse modulator
output
transmitter
encoded pulse
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
ES390644A
Other languages
Spanish (es)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES390644A1 publication Critical patent/ES390644A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/007—Volume compression or expansion in amplifiers of digital or coded signals
    • 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)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmitters (AREA)

Abstract

A transmitter for transmission of signals by encoded pulse modulation, the transmitter being provided with a encoded pulse modulator connected to a pulse generator, the output pulses of said encoded pulse modulator being transmitted to the cooperating receiver and also being applied to a comparison circuit that includes a cascade circuit formed by an integrator circuit and a difference generator to which the signals to be transmitted are also applied, said cascade circuit generating a difference signal to control the encoded pulse modulator, being equipped the transmitter of a dynamic control circuit comprising a pulse modulator connected to the input of said comparison circuit and a dynamic control voltage generator powered by the output pulses of said encoded pulse modulator and including an integrator circuit in its output circuit pa to generate a dynamic control voltage intended to control said pulse modulator, and a control voltage balancing device to suppress the variable direct current component introduced into said comparison circuit by said dynamic control voltage generator, characterized in that the transmitter is provided with a third circuit whose input is connected to the output of said encoded pulse modulator, whose third circuit is formed as a reaction circuit including an integrator circuit to integrate the output pulses of said encoded pulse modulator, said integrator circuit having a lower cut-off frequency than that of the integrator circuit incorporated in said comparison circuit, the output of said third circuit being coupled to said comparison circuit at a point located between the output of said pulse modulator and the input of said im modulator coded pulses. (Machine-translation by Google Translate, not legally binding)
ES390644A 1970-04-29 1971-04-27 Pulse code modulation transmitter Expired ES390644A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7006248A NL156285B (en) 1970-04-29 1970-04-29 TRANSMITTER FOR SIGNAL TRANSMISSION BY PULSE CODE MODULATION.

Publications (1)

Publication Number Publication Date
ES390644A1 true ES390644A1 (en) 1973-06-16

Family

ID=19809988

Family Applications (1)

Application Number Title Priority Date Filing Date
ES390644A Expired ES390644A1 (en) 1970-04-29 1971-04-27 Pulse code modulation transmitter

Country Status (13)

Country Link
JP (1) JPS5314908B1 (en)
AT (1) AT323804B (en)
BE (1) BE766385A (en)
BR (1) BR7102477D0 (en)
CA (1) CA963095A (en)
CH (1) CH531277A (en)
DE (1) DE2119000C3 (en)
DK (1) DK140326C (en)
ES (1) ES390644A1 (en)
FR (1) FR2090952A5 (en)
GB (1) GB1294048A (en)
NL (1) NL156285B (en)
SE (1) SE360527B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL174607C (en) * 1975-06-05 1984-07-02 Philips Nv TRANSMISSION SYSTEM FOR SIGNAL TRANSMISSION THROUGH COMPRESSED DELTA MODULATION.
YU40399B (en) * 1980-08-11 1985-12-31 Iskra Delta codec with a doubl stage hybrid quantization adaptation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1224357C2 (en) * 1964-09-16 1973-07-12 Siemens Ag Modulator with instantaneous value compander for devices working with pulse modulation
DE1289104B (en) * 1966-09-16 1969-02-13 Siemens Ag Device for converting an analog signal into a pulse code modulated signal

Also Published As

Publication number Publication date
DE2119000A1 (en) 1971-11-18
FR2090952A5 (en) 1972-01-14
CH531277A (en) 1972-11-30
NL7006248A (en) 1971-11-02
DK140326C (en) 1979-12-17
AT323804B (en) 1975-07-25
CA963095A (en) 1975-02-18
BE766385A (en) 1971-10-27
NL156285B (en) 1978-03-15
SE360527B (en) 1973-09-24
BR7102477D0 (en) 1973-04-10
DE2119000B2 (en) 1976-10-14
DK140326B (en) 1979-07-30
JPS5314908B1 (en) 1978-05-20
DE2119000C3 (en) 1983-02-10
GB1294048A (en) 1972-10-25

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