CA1031086A - Method and apparatus for translating multiple frequency signalling - Google Patents

Method and apparatus for translating multiple frequency signalling

Info

Publication number: CA1031086A
Authority: CA; Canada
Prior art keywords: multiple frequency; frequency signalling; translating multiple; translating; signalling
Prior art date: 1976-03-03
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.): Expired

Application number

CA247,035A

Other languages

English (en)

French (fr)

Inventor

Dennis E. Rittenhouse

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.)

Nortel Networks Ltd

Original Assignee

Northern Electric Co Ltd

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.)

1976-03-03

Filing date

1976-03-03

Publication date

1978-05-09

1976-03-03 Application filed by Northern Electric Co Ltd filed Critical Northern Electric Co Ltd

1976-03-03 Priority to CA247,035A priority Critical patent/CA1031086A/en

1977-02-18 Priority to AU22448/77A priority patent/AU508271B2/en

1977-02-23 Priority to GB7674/77A priority patent/GB1532103A/en

1977-03-01 Priority to DK88877A priority patent/DK88877A/da

1977-03-01 Priority to JP2092077A priority patent/JPS52107708A/ja

1977-03-01 Priority to NO770696A priority patent/NO770696L/no

1977-03-02 Priority to NLAANVRAGE7702219,A priority patent/NL186057C/xx

1977-03-03 Priority to BE175450A priority patent/BE852056A/xx

1977-03-03 Priority to SE7702418A priority patent/SE424129B/sv

1977-03-03 Priority to FR7706234A priority patent/FR2343377A1/fr

1977-03-03 Priority to DE19772709370 priority patent/DE2709370A1/de

1978-05-09 Application granted granted Critical

1978-05-09 Publication of CA1031086A publication Critical patent/CA1031086A/en

Status Expired legal-status Critical Current

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

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Stereo-Broadcasting Methods (AREA)

CA247,035A 1976-03-03 1976-03-03 Method and apparatus for translating multiple frequency signalling Expired CA1031086A (en)

Priority Applications (11)

Application Number	Priority Date	Filing Date	Title
CA247,035A CA1031086A (en)	1976-03-03	1976-03-03	Method and apparatus for translating multiple frequency signalling
AU22448/77A AU508271B2 (en)	1976-03-03	1977-02-18	Translating multiple frequency signalling
GB7674/77A GB1532103A (en)	1976-03-03	1977-02-23	Method and apparatus for translating multiple frequency signalling
JP2092077A JPS52107708A (en)	1976-03-03	1977-03-01	Method and device for translating multiple frequency signal
DK88877A DK88877A (da)	1976-03-03	1977-03-01	Fremgangsmade og apparat til omsetning af flerfrekvenssignalering
NO770696A NO770696L (no)	1976-03-03	1977-03-01	Fremgangsm}te og apparat for dekoding av signaler med flere frekvenser
NLAANVRAGE7702219,A NL186057C (nl)	1976-03-03	1977-03-02	Met verscheidene frequenties werkende signaalontvanger voor het ontvangen van tevoren bepaalde dubbeltoonsignalen.
BE175450A BE852056A (fr)	1976-03-03	1977-03-03	Procede et appareil pour traduire des signaux a frequences multiples
SE7702418A SE424129B (sv)	1976-03-03	1977-03-03	Mottagare for flerfrekvenssignaler
FR7706234A FR2343377A1 (fr)	1976-03-03	1977-03-03	Procede et appareil pour transformer des signaux de signalisation a frequences multiples
DE19772709370 DE2709370A1 (de)	1976-03-03	1977-03-03	Verfahren und geraet fuer die umsetzung bzw. zuordnung von vielfach-frequenz-signalen

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA247,035A CA1031086A (en)	1976-03-03	1976-03-03	Method and apparatus for translating multiple frequency signalling

Publications (1)

Publication Number	Publication Date
CA1031086A true CA1031086A (en)	1978-05-09

Family

ID=4105372

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA247,035A Expired CA1031086A (en)	1976-03-03	1976-03-03	Method and apparatus for translating multiple frequency signalling

Country Status (11)

Country	Link
JP (1)	JPS52107708A (sv)
AU (1)	AU508271B2 (sv)
BE (1)	BE852056A (sv)
CA (1)	CA1031086A (sv)
DE (1)	DE2709370A1 (sv)
DK (1)	DK88877A (sv)
FR (1)	FR2343377A1 (sv)
GB (1)	GB1532103A (sv)
NL (1)	NL186057C (sv)
NO (1)	NO770696L (sv)
SE (1)	SE424129B (sv)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5831140B2 (ja) *	1978-11-10	1983-07-04	株式会社日立製作所	信号受信器
DE3629907A1 (de) *	1986-09-03	1988-03-10	Standard Elektrik Lorenz Ag	Signalisierungsempfaenger

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3710031A (en) *	1970-12-23	1973-01-09	Itt	Multi frequency receiver
FR2127450A5 (sv) *	1971-03-03	1972-10-13	Ibm France
DE2116635C3 (de) *	1971-04-05	1978-10-05	Ibm Deutschland Gmbh, 7000 Stuttgart	Verfahren zur digitalen Decodierung frequenzcodierter Signale und Schaltungsanordnung zur Durchführung des Verfahrens
CA976675A (en) *	1972-10-16	1975-10-21	Microsystems International Limited	Dual tone receiver
US3914557A (en) *	1973-04-11	1975-10-21	Bell Telephone Labor Inc	Multifrequency tone detecting arrangement
US3936801A (en) *	1974-09-12	1976-02-03	Bell Telephone Laboratories, Incorporated	Multifrequency signal receiver timing circuit

1976
- 1976-03-03 CA CA247,035A patent/CA1031086A/en not_active Expired
1977
- 1977-02-18 AU AU22448/77A patent/AU508271B2/en not_active Expired
- 1977-02-23 GB GB7674/77A patent/GB1532103A/en not_active Expired
- 1977-03-01 NO NO770696A patent/NO770696L/no unknown
- 1977-03-01 JP JP2092077A patent/JPS52107708A/ja active Pending
- 1977-03-01 DK DK88877A patent/DK88877A/da not_active Application Discontinuation
- 1977-03-02 NL NLAANVRAGE7702219,A patent/NL186057C/xx not_active IP Right Cessation
- 1977-03-03 DE DE19772709370 patent/DE2709370A1/de not_active Ceased
- 1977-03-03 BE BE175450A patent/BE852056A/xx unknown
- 1977-03-03 SE SE7702418A patent/SE424129B/sv not_active IP Right Cessation
- 1977-03-03 FR FR7706234A patent/FR2343377A1/fr active Granted

Also Published As

Publication number	Publication date
NL186057C (nl)	1990-09-03
SE7702418L (sv)	1977-09-04
NL186057B (nl)	1990-04-02
FR2343377B1 (sv)	1983-08-12
DK88877A (da)	1977-09-04
FR2343377A1 (fr)	1977-09-30
AU508271B2 (en)	1980-03-13
JPS52107708A (en)	1977-09-09
SE424129B (sv)	1982-06-28
BE852056A (fr)	1977-07-01
AU2244877A (en)	1978-08-24
GB1532103A (en)	1978-11-15
DE2709370A1 (de)	1977-09-08
NL7702219A (nl)	1977-09-06
NO770696L (no)	1977-09-06

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