ES441943A1 - Un modem digital que utiliza modulacion delta continuamente variable. - Google Patents

Un modem digital que utiliza modulacion delta continuamente variable.

Info

Publication number
ES441943A1
ES441943A1 ES441943A ES441943A ES441943A1 ES 441943 A1 ES441943 A1 ES 441943A1 ES 441943 A ES441943 A ES 441943A ES 441943 A ES441943 A ES 441943A ES 441943 A1 ES441943 A1 ES 441943A1
Authority
ES
Spain
Prior art keywords
signal
bits
pulse
analog
digital
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
ES441943A
Other languages
English (en)
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.)
Nokia Spain SA
Original Assignee
Alcatel Espana 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 Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES441943A1 publication Critical patent/ES441943A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/06—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation
    • H04B14/062—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation using delta modulation or one-bit differential modulation [1DPCM]
    • H04B14/064—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation using delta modulation or one-bit differential modulation [1DPCM] with adaptive feedback

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (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)
ES441943A 1974-10-21 1975-10-21 Un modem digital que utiliza modulacion delta continuamente variable. Expired ES441943A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/516,252 US3979676A (en) 1974-10-21 1974-10-21 Delta modulation apparatus

Publications (1)

Publication Number Publication Date
ES441943A1 true ES441943A1 (es) 1977-07-01

Family

ID=24054772

Family Applications (1)

Application Number Title Priority Date Filing Date
ES441943A Expired ES441943A1 (es) 1974-10-21 1975-10-21 Un modem digital que utiliza modulacion delta continuamente variable.

Country Status (4)

Country Link
US (1) US3979676A (es)
AU (1) AU502149B2 (es)
CH (1) CH600689A5 (es)
ES (1) ES441943A1 (es)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4101881A (en) * 1976-03-15 1978-07-18 Hybrid Systems Corporation Multiple state responsive delta-sigma converter and delay line
US4163871A (en) * 1977-12-22 1979-08-07 International Telephone And Telegraph Corporation Digital CVSD telephone conference circuit
US4251804A (en) * 1978-09-18 1981-02-17 Scardina Mark V Delta modulation utilizing selectable piecewise linear waveform approximation
US4275267A (en) * 1979-05-30 1981-06-23 Koss Corporation Ambience processor
US4462106A (en) * 1982-01-13 1984-07-24 Deltalab Research, Inc. Digital encoding circuitry
US4700362A (en) * 1983-10-07 1987-10-13 Dolby Laboratories Licensing Corporation A-D encoder and D-A decoder system
US4987586A (en) * 1987-07-31 1991-01-22 Compaq Computer Corporation Modem-telephone interconnect
US5555438A (en) * 1991-07-24 1996-09-10 Allen-Bradley Company, Inc. Method for synchronously transferring serial data to and from an input/output (I/O) module with true and complement error detection coding
US5557635A (en) * 1994-01-12 1996-09-17 The United States Of America As Represented By The Secretary Of The Air Force Voice encode/decode subsystem in a system for acquisition of test data using pulse code modulation

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1208774A (en) * 1967-02-10 1970-10-14 Mini Of Technology Improvements in or relating to delta-modulation telecommunications apparatus
BE754963A (fr) * 1969-08-20 1971-02-01 Western Electric Co Systeme de communication a impulsions codees differentielles
US3706944A (en) * 1970-12-02 1972-12-19 Bell Telephone Labor Inc Discrete adaptive delta modulator
US3795900A (en) * 1971-11-09 1974-03-05 Nasa Multifunction audio digitizer
US3757252A (en) * 1971-12-13 1973-09-04 Univ Sherbrooke Digital companded delta modulator
NL155997B (nl) * 1972-06-24 1978-02-15 Philips Nv Overdrachtsstelsel.
US3878465A (en) * 1972-12-15 1975-04-15 Univ Sherbrooke Instantaneous adaptative delta modulation system

Also Published As

Publication number Publication date
US3979676A (en) 1976-09-07
CH600689A5 (es) 1978-06-30
AU502149B2 (en) 1979-07-12
AU8562875A (en) 1977-04-21

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970701