SE373711B - Digital frekvensgenerator - Google Patents

Digital frekvensgenerator

Info

Publication number
SE373711B
SE373711B SE686471A SE686471A SE373711B SE 373711 B SE373711 B SE 373711B SE 686471 A SE686471 A SE 686471A SE 686471 A SE686471 A SE 686471A SE 373711 B SE373711 B SE 373711B
Authority
SE
Sweden
Prior art keywords
frequency generator
digital frequency
digital
generator
frequency
Prior art date
Application number
SE686471A
Other languages
English (en)
Swedish (sv)
Inventor
J-B Jacob
P Lavanant
Original Assignee
Lannionnais Electronique
Cit Alcatel
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
Priority claimed from FR7019605A external-priority patent/FR2087711A5/fr
Priority claimed from FR7022230A external-priority patent/FR2094307A6/fr
Application filed by Lannionnais Electronique, Cit Alcatel filed Critical Lannionnais Electronique
Publication of SE373711B publication Critical patent/SE373711B/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L5/00—Automatic control of voltage, current, or power
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
    • H04Q1/4575—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals which are transmitted in digital form

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
SE686471A 1970-05-28 1971-05-27 Digital frekvensgenerator SE373711B (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7019605A FR2087711A5 (cs) 1970-05-28 1970-05-28
FR7022230A FR2094307A6 (cs) 1970-06-15 1970-06-15

Publications (1)

Publication Number Publication Date
SE373711B true SE373711B (sv) 1975-02-10

Family

ID=26215768

Family Applications (1)

Application Number Title Priority Date Filing Date
SE686471A SE373711B (sv) 1970-05-28 1971-05-27 Digital frekvensgenerator

Country Status (4)

Country Link
DE (1) DE2126717A1 (cs)
GB (1) GB1338633A (cs)
NL (1) NL7107106A (cs)
SE (1) SE373711B (cs)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4058805A (en) 1975-06-16 1977-11-15 Comdial Corporation Digital multitone generator for telephone dialing

Also Published As

Publication number Publication date
GB1338633A (en) 1973-11-28
DE2126717A1 (de) 1971-12-09
NL7107106A (cs) 1971-11-30

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