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)
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/sv

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)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (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 (sv) 1970-05-28 1970-05-28
FR7022230A FR2094307A6 (sv) 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 (sv)
GB (1) GB1338633A (sv)
NL (1) NL7107106A (sv)
SE (1) SE373711B (sv)

Also Published As

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

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