ATE78647T1 - Verfahren und schaltung zur erzeugung eines zeitvariablen signals. - Google Patents

Verfahren und schaltung zur erzeugung eines zeitvariablen signals.

Info

Publication number
ATE78647T1
ATE78647T1 AT85302484T AT85302484T ATE78647T1 AT E78647 T1 ATE78647 T1 AT E78647T1 AT 85302484 T AT85302484 T AT 85302484T AT 85302484 T AT85302484 T AT 85302484T AT E78647 T1 ATE78647 T1 AT E78647T1
Authority
AT
Austria
Prior art keywords
circuit
signals
trapezoidal
waveforms
trapezoidal waveforms
Prior art date
Application number
AT85302484T
Other languages
English (en)
Inventor
Ayoub Hadi Mishergi
Russell Jay Apfel
Arthur Francis Lange
Original Assignee
Advanced Micro Devices 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 Advanced Micro Devices Inc filed Critical Advanced Micro Devices Inc
Application granted granted Critical
Publication of ATE78647T1 publication Critical patent/ATE78647T1/de

Links

Classifications

    • 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)
  • Signal Processing (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
AT85302484T 1984-04-10 1985-04-09 Verfahren und schaltung zur erzeugung eines zeitvariablen signals. ATE78647T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/598,649 US4563548A (en) 1984-04-10 1984-04-10 Method and circuit for telephone dialing signal generation
EP85302484A EP0158538B1 (de) 1984-04-10 1985-04-09 Verfahren und Schaltung zur Erzeugung eines zeitvariablen Signals

Publications (1)

Publication Number Publication Date
ATE78647T1 true ATE78647T1 (de) 1992-08-15

Family

ID=24396398

Family Applications (1)

Application Number Title Priority Date Filing Date
AT85302484T ATE78647T1 (de) 1984-04-10 1985-04-09 Verfahren und schaltung zur erzeugung eines zeitvariablen signals.

Country Status (5)

Country Link
US (1) US4563548A (de)
EP (1) EP0158538B1 (de)
JP (1) JPS60230705A (de)
AT (1) ATE78647T1 (de)
DE (1) DE3586366T2 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672568A (en) * 1984-06-15 1987-06-09 Advanced Micro Devices, Inc. Method for digital voltage controlled oscillator
US4635279A (en) * 1985-07-25 1987-01-06 Rca Corporation Arrangement for coherently generating sinusoids of different frequencies, and angle modulation data receiver using the arrangement
US4769836A (en) * 1986-04-07 1988-09-06 Casio Computer Co., Ltd. Dialing tone generator employing low frequency oscillator
US5119417A (en) * 1988-07-20 1992-06-02 Casio Computer Co., Ltd. Auto-dialing apparatus
US5408497A (en) * 1993-07-14 1995-04-18 Echelon Corporation Transceiver for transmitting and receiving stair-stepped sinusoidal waveforms
US5393098A (en) * 1993-12-16 1995-02-28 Alliedsignal Inc. Seat belt height adjuster
US5907597A (en) * 1994-08-05 1999-05-25 Smart Tone Authentication, Inc. Method and system for the secure communication of data
US5583933A (en) * 1994-08-05 1996-12-10 Mark; Andrew R. Method and apparatus for the secure communication of data
WO1997026745A1 (en) * 1996-01-16 1997-07-24 Transcendata, Inc. Multi-level, multi-frequency interference pattern analog waveform encoding of digital data for transmission
IT1298231B1 (it) * 1998-02-11 1999-12-20 Sgs Thomson Microelectronics Circuito di generazione di un segnale trapezoidale con fronti d'onda controllati, particolarmente per un convertitore per ricevitore
US6038262A (en) * 1998-06-09 2000-03-14 Transcendata, Inc. Method and apparatus for compensation of electro-magnetic distortion using weighted feedback delay for amplitude coded sinusoidal waveform generation and transmission
US6741845B1 (en) * 2000-06-23 2004-05-25 Stmicroelectronics S.R.L. Wave-shaper device
US20030063087A1 (en) * 2001-09-28 2003-04-03 Doyle Peter L. Variable-formatable width buffer and method of use
US7953782B2 (en) * 2007-05-18 2011-05-31 Ess Technology, Inc. Digital forced oscillation by direct digital synthesis
US8755514B1 (en) * 2013-09-16 2014-06-17 The United States Of America As Represented By The Secretary Of The Army Dual-tone multi-frequency signal classification

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1325193A (en) * 1970-05-18 1973-08-01 Post Office Signal generators
FR2237363B1 (de) * 1973-07-12 1976-05-07 Ibm France
US4061886A (en) * 1975-09-29 1977-12-06 Mostek Corporation Dual tone multiple frequency generator
DE2744025A1 (de) * 1977-09-30 1979-04-12 Licentia Gmbh Signalsender zur erzeugung von analogen signalen vorgegebener frequenz fuer fernmelde- oder datenverarbeitungsanlagen
US4390754A (en) * 1980-06-30 1983-06-28 Mostek Corporation Tone generator circuit

Also Published As

Publication number Publication date
DE3586366D1 (de) 1992-08-27
DE3586366T2 (de) 1993-01-07
JPS60230705A (ja) 1985-11-16
US4563548A (en) 1986-01-07
EP0158538A2 (de) 1985-10-16
EP0158538A3 (en) 1988-07-27
EP0158538B1 (de) 1992-07-22

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee