BE782055A - DIGITAL TONE SIGNAL GENERATOR - Google Patents

DIGITAL TONE SIGNAL GENERATOR

Info

Publication number
BE782055A
BE782055A BE782055A BE782055A BE782055A BE 782055 A BE782055 A BE 782055A BE 782055 A BE782055 A BE 782055A BE 782055 A BE782055 A BE 782055A BE 782055 A BE782055 A BE 782055A
Authority
BE
Belgium
Prior art keywords
signal generator
tone signal
digital tone
digital
generator
Prior art date
Application number
BE782055A
Other languages
French (fr)
Inventor
J L Thomas
Original Assignee
North American Rockwell
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 North American Rockwell filed Critical North American Rockwell
Publication of BE782055A publication Critical patent/BE782055A/en

Links

Classifications

    • 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)
  • Computer Networks & Wireless Communication (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Devices For Supply Of Signal Current (AREA)
BE782055A 1971-08-27 1972-04-13 DIGITAL TONE SIGNAL GENERATOR BE782055A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17552471A 1971-08-27 1971-08-27

Publications (1)

Publication Number Publication Date
BE782055A true BE782055A (en) 1972-07-31

Family

ID=22640563

Family Applications (1)

Application Number Title Priority Date Filing Date
BE782055A BE782055A (en) 1971-08-27 1972-04-13 DIGITAL TONE SIGNAL GENERATOR

Country Status (4)

Country Link
JP (1) JPS535002B2 (en)
BE (1) BE782055A (en)
FR (1) FR2151815A5 (en)
GB (1) GB1378818A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941942A (en) * 1974-01-02 1976-03-02 Motorola, Inc. Two of eight tone encoder
FR2280141A1 (en) * 1974-07-26 1976-02-20 Materiel Telephonique System of signalling between data processing centres - has seven frequency divider sub-assemblies, decoders and filters
US4061886A (en) * 1975-09-29 1977-12-06 Mostek Corporation Dual tone multiple frequency generator
US4087638A (en) * 1976-10-01 1978-05-02 Telaris Telecommunications Inc. DTMF Communication system
JPS53145507A (en) * 1977-05-25 1978-12-18 Fujitsu Ltd Pb signal transmitting system

Also Published As

Publication number Publication date
JPS535002B2 (en) 1978-02-23
JPS4831808A (en) 1973-04-26
GB1378818A (en) 1974-12-27
FR2151815A5 (en) 1973-04-20

Similar Documents

Publication Publication Date Title
SE413967B (en) DEVICE SIGNAL CONVERSION DEVICE
SE394330B (en) DIGITAL SCREEN CONVERTER
FR2315206A1 (en) MULTI-FREQUENCY SIGNAL GENERATOR
CH549897A (en) PERIODIC SIGNAL GENERATOR.
CH535998A (en) Digital sine-cosine generator
FR2300469A1 (en) DIGITAL SIGNAL CONCENTRATOR / MULTIPLEXER
SE387800B (en) DIGITAL ECO-ELIMINATOR
BE806430A (en) CONVERTER OF ALTERNATIVE ANALOGUE SIGNALS TO DIGITAL SIGNALS
DK143676C (en) TONE GENERATOR FOR PROVIDING SIGNALS WITH SELECTED FREQUENCIES
NO142797C (en) CODE GENERATOR FOR RANDOM DIGITAL SIGNALS
BE769484A (en) DIGITAL SIGNAL GENERATOR
BE809187A (en) SIGNAL MIXING CIRCUIT
CA962387A (en) Digital tone generator
FR2325293A5 (en) SIGNAL GENERATOR MECHANISM
SE401044B (en) ELECTRONIC DIGITAL CAR
SE396261B (en) DIGITAL SIGNAL GENERATOR
FR2277473A1 (en) DIGITAL SIGNAL TRANSMISSION
BE782055A (en) DIGITAL TONE SIGNAL GENERATOR
BE793224A (en) INTERMEDIATE CENTRAL FOR DIGITAL SIGNALS
IT965227B (en) SIGNAL GENERATOR
BE795339A (en) MULTI-PHASE SIGNAL GENERATOR
BR7205739D0 (en) AN ELECTRONIC SIGNAL SWITCH
SE393874B (en) DIGITAL S
BE792191A (en) WEIGHING SIGNAL GENERATOR
BE753623A (en) MULTI-FREQUENCY SIGNAL GENERATOR