ES492567A0 - Mejoras en los generadores de sonido para la produccion de frecuencias de senales en aparatos telefonicos - Google Patents

Mejoras en los generadores de sonido para la produccion de frecuencias de senales en aparatos telefonicos

Info

Publication number
ES492567A0
ES492567A0 ES492567A ES492567A ES492567A0 ES 492567 A0 ES492567 A0 ES 492567A0 ES 492567 A ES492567 A ES 492567A ES 492567 A ES492567 A ES 492567A ES 492567 A0 ES492567 A0 ES 492567A0
Authority
ES
Spain
Prior art keywords
frequency divider
flop
divider
flip
output
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
ES492567A
Other languages
English (en)
Other versions
ES8102759A1 (es
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of ES492567A0 publication Critical patent/ES492567A0/es
Publication of ES8102759A1 publication Critical patent/ES8102759A1/es
Expired legal-status Critical Current

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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/02—Digital function generators
    • G06F1/025—Digital function generators for functions having two-valued amplitude, e.g. Walsh functions
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2101/00—Indexing scheme relating to the type of digital function generated
    • G06F2101/04—Trigonometric functions

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Circuits Of Receivers In General (AREA)
ES492567A 1979-06-20 1980-06-18 Mejoras en los generadores de sonido para la produccion de frecuencias de senales en aparatos telefonicos Expired ES8102759A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2924752A DE2924752C2 (de) 1979-06-20 1979-06-20 Tongenerator zur Erzeugung von Signalisierungsfrequenzen in einem MFV-Fernsprechapparat

Publications (2)

Publication Number Publication Date
ES492567A0 true ES492567A0 (es) 1981-02-16
ES8102759A1 ES8102759A1 (es) 1981-02-16

Family

ID=6073598

Family Applications (1)

Application Number Title Priority Date Filing Date
ES492567A Expired ES8102759A1 (es) 1979-06-20 1980-06-18 Mejoras en los generadores de sonido para la produccion de frecuencias de senales en aparatos telefonicos

Country Status (5)

Country Link
EP (1) EP0021296B1 (es)
AT (1) ATE4478T1 (es)
DE (1) DE2924752C2 (es)
ES (1) ES8102759A1 (es)
GR (1) GR68381B (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4471170A (en) * 1983-02-24 1984-09-11 Motorola, Inc. Non-integer programmable counter
NL8303701A (nl) * 1983-10-27 1985-05-17 Philips Nv Dtmf-telefoontoestel met meervoudig gebruik van de logica van de digitale toongenerator.
DE3426915A1 (de) * 1984-07-21 1986-01-30 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Verfahren zur erzeugung eines akustischen rufsignals
US5481230A (en) * 1994-11-14 1996-01-02 Tektronix, Inc. Phase modulator having individually placed edges

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3657657A (en) * 1970-08-03 1972-04-18 William T Jefferson Digital sine wave generator
NL160687C (nl) * 1972-06-10 1979-11-15 Philips Nv Toongenerator voor het opwekken van gekozen frequenties.
US3941942A (en) * 1974-01-02 1976-03-02 Motorola, Inc. Two of eight tone encoder

Also Published As

Publication number Publication date
GR68381B (es) 1981-12-28
ATE4478T1 (de) 1983-09-15
EP0021296A1 (de) 1981-01-07
EP0021296B1 (de) 1983-08-17
DE2924752C2 (de) 1984-02-02
DE2924752A1 (de) 1981-01-08
ES8102759A1 (es) 1981-02-16

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