DK142483A - Flertonesignalgenerator samt fremgangsmaade til dannelse af et flertonesignal - Google Patents

Flertonesignalgenerator samt fremgangsmaade til dannelse af et flertonesignal Download PDF

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Publication number
DK142483A
DK142483A DK142483A DK142483A DK142483A DK 142483 A DK142483 A DK 142483A DK 142483 A DK142483 A DK 142483A DK 142483 A DK142483 A DK 142483A DK 142483 A DK142483 A DK 142483A
Authority
DK
Denmark
Prior art keywords
multiple signal
creating
procedure
signal generator
generator
Prior art date
Application number
DK142483A
Other languages
English (en)
Other versions
DK142483D0 (da
Inventor
Gerald Paul Labedz
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of DK142483A publication Critical patent/DK142483A/da
Publication of DK142483D0 publication Critical patent/DK142483D0/da

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/02—Digital function generators
    • G06F1/03—Digital function generators working, at least partly, by table look-up
    • G06F1/0321—Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers
    • G06F1/0328—Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers in which the phase increment is adjustable, e.g. by using an adder-accumulator
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies
    • H04M1/505—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies signals generated in digital form

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Analogue/Digital Conversion (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Details Of Television Scanning (AREA)
  • Luminescent Compositions (AREA)
  • Electrophonic Musical Instruments (AREA)
DK1424/83A 1981-08-03 1983-03-29 Flertonesignalgenerator samt fremgangsmade til dannelse af et flertonesignal DK142483D0 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US28962481A 1981-08-03 1981-08-03
PCT/US1982/001025 WO1983000588A1 (en) 1981-08-03 1982-07-28 Multi-tone signal generator

Publications (2)

Publication Number Publication Date
DK142483A true DK142483A (da) 1983-03-29
DK142483D0 DK142483D0 (da) 1983-03-29

Family

ID=23112335

Family Applications (1)

Application Number Title Priority Date Filing Date
DK1424/83A DK142483D0 (da) 1981-08-03 1983-03-29 Flertonesignalgenerator samt fremgangsmade til dannelse af et flertonesignal

Country Status (9)

Country Link
EP (1) EP0084562B1 (da)
JP (1) JPS58501254A (da)
AU (1) AU551531B2 (da)
BR (1) BR8207787A (da)
CA (1) CA1194245A (da)
DE (1) DE3275797D1 (da)
DK (1) DK142483D0 (da)
NO (1) NO830584L (da)
WO (1) WO1983000588A1 (da)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4644476A (en) * 1984-06-29 1987-02-17 Wang Laboratories, Inc. Dialing tone generation
FR2570899B1 (fr) * 1984-09-26 1986-12-05 Jeumont Schneider Generateur d'une pluralite de signaux de frequences differentes et emetteur incluant un tel generateur
US5034977A (en) * 1989-04-04 1991-07-23 Industrial Technology Research Institute Phase accumulation dual tone multiple frequency generator

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1496141A (fr) * 1966-06-03 1967-09-29 Cit Alcatel Générateur d'ondes modulées en fréquence
US3657657A (en) * 1970-08-03 1972-04-18 William T Jefferson Digital sine wave generator
US4053839A (en) * 1973-05-29 1977-10-11 Knoedl Jr George Method and apparatus for the frequency multiplication of composite waves
US4058805A (en) * 1975-06-16 1977-11-15 Comdial Corporation Digital multitone generator for telephone dialing
US4056692A (en) * 1976-08-02 1977-11-01 International Telephone And Telegraph Corporation Digital tone generator
US4070709A (en) * 1976-10-13 1978-01-24 The United States Of America As Represented By The Secretary Of The Air Force Piecewise linear predictive coding system
US4132871A (en) * 1977-06-22 1979-01-02 Fairchild Camera And Instrument Corporation Digitally synthesized multi-frequency signal generator
US4134072A (en) * 1977-09-06 1979-01-09 Rca Corporation Direct digital frequency synthesizer
US4192007A (en) * 1978-05-30 1980-03-04 Lorain Products Corporation Programmable ringing generator
AU529276B2 (en) * 1978-11-23 1983-06-02 General Electric Company Limited, The A.c. generator
US4349704A (en) * 1979-12-31 1982-09-14 Bell Telephone Laboratories, Incorporated Digital multifrequency signal generator
US4320522A (en) * 1980-05-09 1982-03-16 Harris Corporation Programmable frequency and signalling format tone frequency encoder/decoder circuit

Also Published As

Publication number Publication date
AU551531B2 (en) 1986-05-01
CA1194245A (en) 1985-09-24
EP0084562B1 (en) 1987-03-18
AU8821882A (en) 1983-02-22
WO1983000588A1 (en) 1983-02-17
DE3275797D1 (en) 1987-04-23
BR8207787A (pt) 1983-06-21
EP0084562A4 (en) 1984-03-26
NO830584L (no) 1983-02-21
DK142483D0 (da) 1983-03-29
EP0084562A1 (en) 1983-08-03
JPS58501254A (ja) 1983-07-28

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Legal Events

Date Code Title Description
AHB Application shelved due to non-payment
PBP Patent lapsed