FI780555A - KOPPLINGSANORDNING FOER EN SNABBTELEFON - Google Patents

KOPPLINGSANORDNING FOER EN SNABBTELEFON

Info

Publication number: FI780555A
Authority: FI; Finland
Prior art keywords: snabbtelefon; kopplingsanordning foer; kopplingsanordning; foer
Prior art date: 1977-11-16

Application number

FI780555A

Other languages

Finnish (fi)

Inventor

Joergen Brosow

Original Assignee

Dasy Int Sa

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.)

1977-11-16

Filing date

1978-02-20

Publication date

1979-05-17

1977-11-16 Priority claimed from DE19772751261 external-priority patent/DE2751261C3/en

1977-11-16 Priority claimed from DE19772751248 external-priority patent/DE2751248C3/en

1978-02-20 Application filed by Dasy Int Sa filed Critical Dasy Int Sa

1979-05-17 Publication of FI780555A publication Critical patent/FI780555A/en

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
- H04M9/10—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic with switching of direction of transmission by voice frequency

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Interconnected Communication Systems, Intercoms, And Interphones (AREA)

FI780555A 1977-11-16 1978-02-20 KOPPLINGSANORDNING FOER EN SNABBTELEFON FI780555A (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19772751261 DE2751261C3 (en)	1977-11-16	1977-11-16	Circuit arrangement for a hands-free telephone with automatic signal amplitude limitation
DE19772751248 DE2751248C3 (en)	1977-11-16	1977-11-16	Circuit arrangement for a hands-free telephone

Publications (1)

Publication Number	Publication Date
FI780555A true FI780555A (en)	1979-05-17

Family

ID=25773095

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI780555A FI780555A (en)	1977-11-16	1978-02-20	KOPPLINGSANORDNING FOER EN SNABBTELEFON

Country Status (10)

Country	Link
JP (1)	JPS5472906A (en)
CH (1)	CH626485A5 (en)
DK (1)	DK74878A (en)
FI (1)	FI780555A (en)
FR (1)	FR2409645A2 (en)
GB (1)	GB1568329A (en)
IT (1)	IT1161440B (en)
LU (1)	LU79026A1 (en)
NL (1)	NL7801820A (en)
SE (1)	SE7801902L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB8317706D0 (en) *	1983-06-29	1983-08-03	Standard Telephones Cables Ltd	Telephone subsets
US4724540A (en) *	1986-09-02	1988-02-09	Motorola, Inc.	Speakerphone with fast idle mode
JPH06338934A (en) *	1993-05-25	1994-12-06	Exar Corp	Speaker horn with phenomenon driving type control circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4051325A (en) *	1975-01-31	1977-09-27	Matsushita Electric Industrial Co., Ltd.	Speech intercommunication system
DE2638286C3 (en) *	1976-08-25	1979-03-01	Dasy Inter S.A., Genf (Schweiz)	Circuit arrangement for a hands-free telephone

1978
- 1978-02-08 LU LU79026A patent/LU79026A1/en unknown
- 1978-02-16 GB GB6251/78A patent/GB1568329A/en not_active Expired
- 1978-02-16 FR FR7804396A patent/FR2409645A2/en active Pending
- 1978-02-17 NL NL7801820A patent/NL7801820A/en not_active Application Discontinuation
- 1978-02-20 DK DK74878A patent/DK74878A/en not_active Application Discontinuation
- 1978-02-20 JP JP1840878A patent/JPS5472906A/en active Pending
- 1978-02-20 IT IT12485/78A patent/IT1161440B/en active
- 1978-02-20 FI FI780555A patent/FI780555A/en unknown
- 1978-02-20 CH CH182478A patent/CH626485A5/en not_active IP Right Cessation
- 1978-02-20 SE SE7801902A patent/SE7801902L/en unknown

Also Published As

Publication number	Publication date
DK74878A (en)	1979-05-17
CH626485A5 (en)	1981-11-13
FR2409645A2 (en)	1979-06-15
JPS5472906A (en)	1979-06-11
NL7801820A (en)	1979-05-18
SE7801902L (en)	1979-05-17
IT7812485A0 (en)	1978-02-20
GB1568329A (en)	1980-05-29
IT1161440B (en)	1987-03-18
LU79026A1 (en)	1978-06-21

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