SE7708218L - Mottagare for talfrekvenssignaler - Google Patents

Mottagare for talfrekvenssignaler

Info

Publication number: SE7708218L
Authority: SE; Sweden
Prior art keywords: receiver; frequency signals; number frequency; signals; frequency
Prior art date: 1976-07-20

Application number

SE7708218A

Other languages

English (en)

Swedish (sv)

Inventor

P Bakker

J P Maat

Original Assignee

Philips Nv

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.)

1976-07-20

Filing date

1977-07-15

Publication date

1978-01-21

1977-07-15 Application filed by Philips Nv filed Critical Philips Nv

1978-01-21 Publication of SE7708218L publication Critical patent/SE7708218L/xx

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
- H04Q1/46—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency, e.g. speech current

Landscapes

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

SE7708218A 1976-07-20 1977-07-15 Mottagare for talfrekvenssignaler SE7708218L (sv)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL7608047A NL7608047A (nl)	1976-07-20	1976-07-20	Ontvanginrichting voor toonfrequente tekens.

Publications (1)

Publication Number	Publication Date
SE7708218L true SE7708218L (sv)	1978-01-21

Family

ID=19826629

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE7708218A SE7708218L (sv)	1976-07-20	1977-07-15	Mottagare for talfrekvenssignaler

Country Status (7)

Country	Link
JP (1)	JPS5313810A (fr)
BE (1)	BE856903A (fr)
BR (1)	BR7704723A (fr)
DE (1)	DE2730453A1 (fr)
FR (1)	FR2359561A1 (fr)
NL (1)	NL7608047A (fr)
SE (1)	SE7708218L (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4696031A (en) *	1985-12-31	1987-09-22	Wang Laboratories, Inc.	Signal detection and discrimination using waveform peak factor

1976
- 1976-07-20 NL NL7608047A patent/NL7608047A/xx unknown
1977
- 1977-07-06 DE DE19772730453 patent/DE2730453A1/de active Pending
- 1977-07-15 SE SE7708218A patent/SE7708218L/xx not_active Application Discontinuation
- 1977-07-18 BE BE179426A patent/BE856903A/fr unknown
- 1977-07-18 BR BR7704723A patent/BR7704723A/pt unknown
- 1977-07-19 FR FR7722066A patent/FR2359561A1/fr not_active Withdrawn
- 1977-07-20 JP JP8616077A patent/JPS5313810A/ja active Pending

Also Published As

Publication number	Publication date
BR7704723A (pt)	1978-05-16
BE856903A (fr)	1978-01-18
DE2730453A1 (de)	1978-01-26
FR2359561A1 (fr)	1978-02-17
JPS5313810A (en)	1978-02-07
NL7608047A (nl)	1978-01-24

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Legal Events

Date	Code	Title	Description
1995-02-28	NAV	Patent application has lapsed	Ref document number: 7608047-2