NL7903346A - Digitaal signaleringsstelsel. - Google Patents

Digitaal signaleringsstelsel. Download PDF

Info

Publication number
NL7903346A
NL7903346A NL7903346A NL7903346A NL7903346A NL 7903346 A NL7903346 A NL 7903346A NL 7903346 A NL7903346 A NL 7903346A NL 7903346 A NL7903346 A NL 7903346A NL 7903346 A NL7903346 A NL 7903346A
Authority
NL
Netherlands
Prior art keywords
filter
signaling system
filters
digital signaling
values
Prior art date
Application number
NL7903346A
Other languages
English (en)
Dutch (nl)
Original Assignee
Bell Telephone Mfg
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 Bell Telephone Mfg filed Critical Bell Telephone Mfg
Priority to NL7903346A priority Critical patent/NL7903346A/nl
Priority to AU57671/80A priority patent/AU539806B2/en
Priority to US06/143,055 priority patent/US4355405A/en
Priority to DE3015567A priority patent/DE3015567C2/de
Priority to BE2/58529A priority patent/BE882941A/nl
Priority to IT21664/80A priority patent/IT1196912B/it
Priority to MX182107A priority patent/MX149459A/es
Priority to ES490898A priority patent/ES8101290A1/es
Priority to AR280818A priority patent/AR228738A1/es
Priority to JP5553680A priority patent/JPS55159688A/ja
Priority to FR8009534A priority patent/FR2455405B1/fr
Priority to CH325380A priority patent/CH655419B/de
Priority to BR8002591A priority patent/BR8002591A/pt
Publication of NL7903346A publication Critical patent/NL7903346A/nl

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)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Time-Division Multiplex Systems (AREA)
NL7903346A 1979-04-27 1979-04-27 Digitaal signaleringsstelsel. NL7903346A (nl)

Priority Applications (13)

Application Number Priority Date Filing Date Title
NL7903346A NL7903346A (nl) 1979-04-27 1979-04-27 Digitaal signaleringsstelsel.
AU57671/80A AU539806B2 (en) 1979-04-27 1980-04-22 Digital frequency selector
US06/143,055 US4355405A (en) 1979-04-27 1980-04-23 Digital signalling system
DE3015567A DE3015567C2 (de) 1979-04-27 1980-04-23 Digitaler Mehrfrequenzcodeempfänger mit Störschutzschaltungen in Fernmelde-, insbesondere Fernsprechanlagen
BE2/58529A BE882941A (nl) 1979-04-27 1980-04-24 Digitaal signaleringsstelsel
IT21664/80A IT1196912B (it) 1979-04-27 1980-04-24 Sistema di segnalazione digitale
MX182107A MX149459A (es) 1979-04-27 1980-04-25 Mejoras en sistema de senalizacion digital para conmutacion telefonica
ES490898A ES8101290A1 (es) 1979-04-27 1980-04-25 Un sistema de senalizacion digital
AR280818A AR228738A1 (es) 1979-04-27 1980-04-25 Disposicion de senalizacion digital
JP5553680A JPS55159688A (en) 1979-04-27 1980-04-28 Digital signal communication system
FR8009534A FR2455405B1 (fr) 1979-04-27 1980-04-28 Systeme de signalisation numerique
CH325380A CH655419B (sv) 1979-04-27 1980-04-28
BR8002591A BR8002591A (pt) 1979-04-27 1980-04-28 Sistema de sinalizacao digital

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7903346 1979-04-27
NL7903346A NL7903346A (nl) 1979-04-27 1979-04-27 Digitaal signaleringsstelsel.

Publications (1)

Publication Number Publication Date
NL7903346A true NL7903346A (nl) 1980-10-29

Family

ID=19833070

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7903346A NL7903346A (nl) 1979-04-27 1979-04-27 Digitaal signaleringsstelsel.

Country Status (13)

Country Link
US (1) US4355405A (sv)
JP (1) JPS55159688A (sv)
AR (1) AR228738A1 (sv)
AU (1) AU539806B2 (sv)
BE (1) BE882941A (sv)
BR (1) BR8002591A (sv)
CH (1) CH655419B (sv)
DE (1) DE3015567C2 (sv)
ES (1) ES8101290A1 (sv)
FR (1) FR2455405B1 (sv)
IT (1) IT1196912B (sv)
MX (1) MX149459A (sv)
NL (1) NL7903346A (sv)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512306A1 (fr) * 1981-08-27 1983-03-04 Telecommunications Sa Dispositif numerique de reconnaissance de frequences
NL8200051A (nl) * 1982-01-08 1983-08-01 Philips Nv Inrichting en werkwijze voor het detecteren van multifrequentie tooncodesignalen.
NL8502008A (nl) * 1985-07-12 1987-02-02 Philips Nv Ontvanginrichting voor het onder bescherming van een stoorsignaal/spraaksignaalbewakingsfunctie herkennen van een aantal verschillende en voorafbepaalde frequentiecombinaties van toonfrequente signaleringscomponenten.
DD259987A3 (de) * 1986-07-07 1988-09-14 Rft Nachrichtenelektronik Albe Verfahren und anordnung zum sprachschutz in mfc-tastwahlempfaengern
US4845499A (en) * 1987-11-02 1989-07-04 Ag Communication Systems Corporation Method for generating PCM logarithmic values from linear values
GB2241853A (en) * 1990-03-08 1991-09-11 British Aerospace Digital signal processing apparatus comprising architectures for digital multiplexing and demultiplexing.
US5854813A (en) * 1994-12-29 1998-12-29 Motorola, Inc. Multiple access up converter/modulator and method
DE19581533C2 (de) * 1994-12-29 1999-02-25 Motorola Inc Verfahren zum Digitalisieren eines Breitbandfrequenzsignals und zugehöriger Breitbandfrequenzsignaldigitalisierer
US5668836A (en) * 1994-12-29 1997-09-16 Motorola, Inc. Split frequency band signal digitizer and method
US5748683A (en) * 1994-12-29 1998-05-05 Motorola, Inc. Multi-channel transceiver having an adaptive antenna array and method
US5579341A (en) * 1994-12-29 1996-11-26 Motorola, Inc. Multi-channel digital transceiver and method
US5602874A (en) * 1994-12-29 1997-02-11 Motorola, Inc. Method and apparatus for reducing quantization noise
US5754597A (en) * 1994-12-29 1998-05-19 Motorola, Inc. Method and apparatus for routing a digitized RF signal to a plurality of paths
US5710763A (en) * 1995-07-31 1998-01-20 Motorola, Inc. Filtered fast Fourier transmultiplexer and method
GB2330727B (en) * 1997-10-24 2002-10-09 Mitel Corp Tone and periodical signal detection
US7623826B2 (en) * 2004-07-22 2009-11-24 Frank Pergal Wireless repeater with arbitrary programmable selectivity
US10133549B1 (en) * 2017-12-04 2018-11-20 Kyocera Document Solutions Inc. Systems and methods for implementing a synchronous FIFO with registered outputs

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3150232A (en) * 1961-02-06 1964-09-22 Edward R Schmidt Variable damping circuits
US3436487A (en) * 1965-09-14 1969-04-01 Bell Telephone Labor Inc Telephone signaling arrangement
FR2141502B1 (sv) * 1971-06-01 1973-06-29 Ibm France
US3863030A (en) * 1972-06-01 1975-01-28 Gte Automatic Electric Lab Inc Pcm tone receiver using digital spectrum analysis
FR2191827A5 (sv) * 1972-06-27 1974-02-01 Socotel Mixte D Veloppem
US3824471A (en) * 1972-12-01 1974-07-16 Gte Automatic Electric Lab Inc Pcm tone receiver using floating-point digital spectrum analysis
NL7312548A (nl) * 1973-09-12 1975-03-14 Bell Telephone Mfg Multifrequent signaleringsstelsel.
FR2295665A1 (fr) * 1974-12-18 1976-07-16 Labo Cent Telecommunicat Recepteur numerique de signaux multifrequences
FR2299769A1 (fr) * 1975-01-31 1976-08-27 Telecommunications Sa Procede d'application
DE2553258C3 (de) * 1975-11-27 1980-07-03 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung für einen digitalen Mehrfrequenz-Zeichenempfänger
IT1072242B (it) * 1976-12-17 1985-04-10 Cselt Centro Studi Lab Telecom Procedimento e dispositivo per il riconoscimento di segnali telefonici in codice multifrequenza convertiti in forma numerica

Also Published As

Publication number Publication date
CH655419B (sv) 1986-04-15
DE3015567A1 (de) 1980-11-13
BR8002591A (pt) 1980-12-09
JPH0127640B2 (sv) 1989-05-30
AU5767180A (en) 1980-10-30
FR2455405A1 (fr) 1980-11-21
DE3015567C2 (de) 1986-09-11
AU539806B2 (en) 1984-10-18
MX149459A (es) 1983-11-08
FR2455405B1 (fr) 1987-08-07
JPS55159688A (en) 1980-12-11
IT8021664A0 (it) 1980-04-24
BE882941A (nl) 1980-10-24
US4355405A (en) 1982-10-19
ES490898A0 (es) 1980-12-01
AR228738A1 (es) 1983-04-15
IT1196912B (it) 1988-11-25
ES8101290A1 (es) 1980-12-01

Similar Documents

Publication Publication Date Title
NL7903346A (nl) Digitaal signaleringsstelsel.
US4442540A (en) Data over voice transmission arrangement
CA2081535C (en) Method and apparatus for detecting control signals
HU206572B (en) Digital telecommunication system with coding digital signal per subbanes
NL8120277A (sv)
JPS6238097A (ja) 受信器
WO1999029084A2 (en) Method and apparatus for performing spectral processing in tone detection
JP3266605B2 (ja) タッチトーン認識装置及び方法
US4990848A (en) DTMF receiver
US5353345A (en) Method and apparatus for DTMF detection
US4293737A (en) Ringing decoder circuit
US5138569A (en) Dual tone multi-frequency detector
US4200810A (en) Method and apparatus for averaging and stretching periodic signals
WO1989012359A1 (en) Signal processor
NL8320091A (nl) Inrichting voor het identificeren van digitale signalen met een aantal freguenties.
NL8200051A (nl) Inrichting en werkwijze voor het detecteren van multifrequentie tooncodesignalen.
US4399536A (en) Convolution filter arrangement for digital multifrequency receiver
US3445606A (en) Multifrequency detection system including a frequency multiplying circuit
JPS5816838B2 (ja) 多周波信号受信方式
US4088851A (en) Digital echo suppressor
Cheung et al. High quality 16 kb/s voice transmission: The subband coder approach
RU1800618C (ru) Преобразователь кода спектра звукового сигнала
DE2621085A1 (de) Verfahren zum erkennen von ein- oder mehrfrequenzcodezeichen aus einer folge von pcm-signalen
RU2143790C1 (ru) Адаптивный цифровой групповой приемник сигналов управления и взаимодействия с нелинейной импульсно-кодовой модуляцией (икм)
SU1660217A1 (ru) Приемник многочастотных сигналов

Legal Events

Date Code Title Description
A1B A search report has been drawn up
A85 Still pending on 85-01-01
BC A request for examination has been filed
CNR Transfer of rights (patent application after its laying open for public inspection)

Free format text: ALCATEL N.V.

BV The patent application has lapsed