SE8001315L - Signalmottagare - Google Patents

Signalmottagare

Info

Publication number: SE8001315L
Authority: SE; Sweden
Prior art keywords: filter; signals; switching facility; signalling; pcm
Prior art date: 1979-02-22

Application number

SE8001315A

Other languages

Unknown language ( )

English (en)

Other versions

SE452388B (sv

Inventor

S Cohn-Sfetcu

J K Hood

D J Doyle

Original Assignee

Northern Telecom 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.)

1979-02-22

Filing date

1980-02-19

Publication date

1980-08-23

1980-02-19 Application filed by Northern Telecom Ltd filed Critical Northern Telecom Ltd

1980-08-23 Publication of SE8001315L publication Critical patent/SE8001315L/sv

1987-11-23 Publication of SE452388B publication Critical patent/SE452388B/sv

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)
Time-Division Multiplex Systems (AREA)
Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Interface Circuits In Exchanges (AREA)
Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Electrophonic Musical Instruments (AREA)
Mobile Radio Communication Systems (AREA)

SE8001315A 1979-02-22 1980-02-19 Signalleringsmottagare och sett for mottagande av pulskodmodulerade, pcm, tonsignaler SE452388B (sv)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA322,112A CA1111531A (en)	1979-02-22	1979-02-22	Digital signalling receiver for receiving pcm tones

Publications (2)

Publication Number	Publication Date
SE8001315L true SE8001315L (sv)	1980-08-23
SE452388B SE452388B (sv)	1987-11-23

Family

ID=4113607

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE8001315A SE452388B (sv)	1979-02-22	1980-02-19	Signalleringsmottagare och sett for mottagande av pulskodmodulerade, pcm, tonsignaler

Country Status (9)

Country	Link
JP (1)	JPS55137788A (sv)
AT (1)	AT386312B (sv)
CA (1)	CA1111531A (sv)
DE (1)	DE3005740A1 (sv)
FR (1)	FR2450017A1 (sv)
GB (1)	GB2044039B (sv)
IT (1)	IT1140634B (sv)
NL (1)	NL8001026A (sv)
SE (1)	SE452388B (sv)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5779751A (en) *	1980-11-05	1982-05-19	Nec Corp	Signal receiver
FR2504754A1 (fr) *	1981-04-27	1982-10-29	Thomson Csf Mat Tel	Dispositif sequenceur a memoires mortes
US4519072A (en) *	1982-11-10	1985-05-21	Rockwell International Corporation	Answer supervision system
JPH07171782A (ja) *	1991-07-16	1995-07-11	Haruo Konagai	真空吸着装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR1603175A (sv) *	1968-07-30	1971-03-22
US3863030A (en) *	1972-06-01	1975-01-28	Gte Automatic Electric Lab Inc	Pcm tone receiver using digital spectrum analysis
JPS51112218A (en) *	1975-03-28	1976-10-04	Hitachi Ltd	Multifrequency signal receiver
JPS5918916B2 (ja) *	1975-10-06	1984-05-01	株式会社日立製作所	多周波信号受信器
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

1979
- 1979-02-22 CA CA322,112A patent/CA1111531A/en not_active Expired
1980
- 1980-02-13 GB GB8004800A patent/GB2044039B/en not_active Expired
- 1980-02-15 DE DE19803005740 patent/DE3005740A1/de not_active Withdrawn
- 1980-02-18 IT IT19986/80A patent/IT1140634B/it active
- 1980-02-19 SE SE8001315A patent/SE452388B/sv not_active IP Right Cessation
- 1980-02-20 NL NL8001026A patent/NL8001026A/nl not_active Application Discontinuation
- 1980-02-20 FR FR8003681A patent/FR2450017A1/fr active Granted
- 1980-02-21 AT AT0096280A patent/AT386312B/de not_active IP Right Cessation
- 1980-02-22 JP JP2152180A patent/JPS55137788A/ja active Pending

Also Published As

Publication number	Publication date
IT8019986A0 (it)	1980-02-18
NL8001026A (nl)	1980-08-26
ATA96280A (de)	1987-12-15
FR2450017B1 (sv)	1984-05-11
CA1111531A (en)	1981-10-27
JPS55137788A (en)	1980-10-27
IT8019986A1 (it)	1981-08-18
DE3005740A1 (de)	1980-09-04
AT386312B (de)	1988-08-10
IT1140634B (it)	1986-10-01
SE452388B (sv)	1987-11-23
GB2044039A (en)	1980-10-08
GB2044039B (en)	1983-05-11
FR2450017A1 (fr)	1980-09-19

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Legal Events

Date	Code	Title	Description
1995-01-31	NUG	Patent has lapsed	Ref document number: 8001315-4 Effective date: 19910911 Format of ref document f/p: F

Date

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Title

Description

1995-01-31

NUG

Patent has lapsed

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