NL160687B - TONE GENERATOR FOR GENERATING SELECTED FREQUENCIES. - Google Patents

TONE GENERATOR FOR GENERATING SELECTED FREQUENCIES.

Info

Publication number
NL160687B
NL160687B NL7207933.A NL7207933A NL160687B NL 160687 B NL160687 B NL 160687B NL 7207933 A NL7207933 A NL 7207933A NL 160687 B NL160687 B NL 160687B
Authority
NL
Netherlands
Prior art keywords
tone generator
selected frequencies
generating selected
generating
frequencies
Prior art date
Application number
NL7207933.A
Other languages
Dutch (nl)
Other versions
NL7207933A (en
NL160687C (en
Inventor
Daniel Johannes Gerard Janssen
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Priority to NL7207933.A priority Critical patent/NL160687C/en
Priority to US00364969A priority patent/US3832639A/en
Priority to CA173,408A priority patent/CA1001236A/en
Priority to DK316273A priority patent/DK143676C/en
Priority to JP48063461A priority patent/JPS5748883B2/ja
Priority to GB2717473A priority patent/GB1399200A/en
Priority to IT50551/73A priority patent/IT986136B/en
Priority to FR7320707A priority patent/FR2188360B1/fr
Priority to DE19732328992 priority patent/DE2328992C3/en
Priority to BE132123A priority patent/BE800738A/en
Priority to ES415718A priority patent/ES415718A1/en
Publication of NL7207933A publication Critical patent/NL7207933A/xx
Publication of NL160687B publication Critical patent/NL160687B/en
Application granted granted Critical
Publication of NL160687C publication Critical patent/NL160687C/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
    • H03K23/64—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two
    • H03K23/68—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two with a base which is a non-integer
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
    • H03K23/64—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two
    • H03K23/66—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two with a variable counting base, e.g. by presetting or by adding or suppressing pulses
    • 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
NL7207933.A 1972-06-10 1972-06-10 TONE GENERATOR FOR GENERATING SELECTED FREQUENCIES. NL160687C (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
NL7207933.A NL160687C (en) 1972-06-10 1972-06-10 TONE GENERATOR FOR GENERATING SELECTED FREQUENCIES.
US00364969A US3832639A (en) 1972-06-10 1973-05-29 Tone generator for generating selected frequencies
CA173,408A CA1001236A (en) 1972-06-10 1973-06-06 Tone generator for generating selected frequencies
JP48063461A JPS5748883B2 (en) 1972-06-10 1973-06-07
GB2717473A GB1399200A (en) 1972-06-10 1973-06-07 Tone generator for generating selected frequencies
IT50551/73A IT986136B (en) 1972-06-10 1973-06-07 TONE GENERATOR FOR THE GENERATION OF SELECTED FREQUENCIES
DK316273A DK143676C (en) 1972-06-10 1973-06-07 TONE GENERATOR FOR PROVIDING SIGNALS WITH SELECTED FREQUENCIES
FR7320707A FR2188360B1 (en) 1972-06-10 1973-06-07
DE19732328992 DE2328992C3 (en) 1972-06-10 1973-06-07 SOUND GENERATOR FOR GENERATING SELECTED FREQUENCIES
BE132123A BE800738A (en) 1972-06-10 1973-06-08 SOUND GENERATOR TO GENERATE DESIRED FREQUENCIES
ES415718A ES415718A1 (en) 1972-06-10 1973-06-08 Tone generator for generating selected frequencies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7207933.A NL160687C (en) 1972-06-10 1972-06-10 TONE GENERATOR FOR GENERATING SELECTED FREQUENCIES.

Publications (3)

Publication Number Publication Date
NL7207933A NL7207933A (en) 1973-12-12
NL160687B true NL160687B (en) 1979-06-15
NL160687C NL160687C (en) 1979-11-15

Family

ID=19816248

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7207933.A NL160687C (en) 1972-06-10 1972-06-10 TONE GENERATOR FOR GENERATING SELECTED FREQUENCIES.

Country Status (11)

Country Link
US (1) US3832639A (en)
JP (1) JPS5748883B2 (en)
BE (1) BE800738A (en)
CA (1) CA1001236A (en)
DE (1) DE2328992C3 (en)
DK (1) DK143676C (en)
ES (1) ES415718A1 (en)
FR (1) FR2188360B1 (en)
GB (1) GB1399200A (en)
IT (1) IT986136B (en)
NL (1) NL160687C (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2286564A1 (en) * 1974-09-30 1976-04-23 Roche Bernard MULTIFREQUENCY SIGNAL SYNTHESIZER DEVICE
GB1529851A (en) * 1975-01-10 1978-10-25 Gen Instr Microelect Frequency-signalling circuit for a telephone
US3992612A (en) * 1975-10-14 1976-11-16 The United States Of America As Represented By The Secretary Of The Army Rate multiplier
US4025865A (en) * 1976-01-08 1977-05-24 General Instrument Corporation Frequency-signalling circuit for a telephone
US4160173A (en) * 1976-12-14 1979-07-03 Tokyo Shibaura Electric Co., Ltd. Logic circuit with two pairs of cross-coupled nand/nor gates
JPS546845U (en) * 1977-06-17 1979-01-17
FR2452823A1 (en) * 1979-03-30 1980-10-24 Texas Instruments France LF signal generator - is esp. for telephone systems and maintains HF stability by using ceramic oscillator
DE2924752C2 (en) * 1979-06-20 1984-02-02 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Tone generator for generating signaling frequencies in a DTMF telephone set
US4421952A (en) * 1981-10-16 1983-12-20 Motorola, Inc. Multi-frequency busy signal synthesizing circuitry
NL8301366A (en) * 1983-04-19 1984-11-16 Philips Nv TRANSMISSION CIRCUIT FOR A DTMF TELEPHONE.
US4698619A (en) * 1984-05-07 1987-10-06 Honeywell Inc. Variable frequency fire tone generator
HU191731B (en) * 1984-12-19 1987-04-28 Telefongyar Circuit arrangement for generating system carrier, line pilot and channel carrier-control frequencies of multichannel open cable telephon equipments
HU191730B (en) * 1984-12-19 1987-04-28 Telefongyar Circuit arrangement for generating channel carrier, pilot, system carrier and carrier-receiver frequencies of the multichannel carrier-current telephone equipments of premodulation system
JPH0413868Y2 (en) * 1988-11-29 1992-03-30
US5907597A (en) * 1994-08-05 1999-05-25 Smart Tone Authentication, Inc. Method and system for the secure communication of data

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3215860A (en) * 1962-11-23 1965-11-02 Epsco Inc Clock pulse controlled sine wave synthesizer
FR1496141A (en) * 1966-06-03 1967-09-29 Cit Alcatel Frequency modulated wave generator
US3551826A (en) * 1968-05-16 1970-12-29 Raytheon Co Frequency multiplier and frequency waveform generator
US3623160A (en) * 1969-09-17 1971-11-23 Sanders Associates Inc Data modulator employing sinusoidal synthesis
US3657657A (en) * 1970-08-03 1972-04-18 William T Jefferson Digital sine wave generator
NL7107040A (en) * 1971-05-22 1972-11-24
US3752973A (en) * 1971-06-30 1973-08-14 Leybold Heraeus Verwaltung Apparatus for producing voltage functions

Also Published As

Publication number Publication date
IT986136B (en) 1975-01-20
DK143676C (en) 1982-03-01
CA1001236A (en) 1976-12-07
DE2328992A1 (en) 1973-12-20
DE2328992B2 (en) 1977-04-14
DK143676B (en) 1981-09-21
BE800738A (en) 1973-12-10
FR2188360B1 (en) 1983-05-06
JPS4951854A (en) 1974-05-20
GB1399200A (en) 1975-06-25
DE2328992C3 (en) 1977-11-24
FR2188360A1 (en) 1974-01-18
JPS5748883B2 (en) 1982-10-19
NL7207933A (en) 1973-12-12
ES415718A1 (en) 1976-02-01
US3832639A (en) 1974-08-27
NL160687C (en) 1979-11-15

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee
NL80 Information provided on patent owner name for an already discontinued patent

Owner name: PHILIPS