DK254577A - - Google Patents
Info
- Publication number
- DK254577A DK254577A DK254577A DK254577A DK254577A DK 254577 A DK254577 A DK 254577A DK 254577 A DK254577 A DK 254577A DK 254577 A DK254577 A DK 254577A DK 254577 A DK254577 A DK 254577A
- Authority
- DK
- Denmark
Links
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
- H04M9/085—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using digital techniques
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Mobile Radio Communication Systems (AREA)
- Exchange Systems With Centralized Control (AREA)
- Liquid Developers In Electrophotography (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7606399 | 1976-06-08 | ||
| SE7606399A SE399502B (sv) | 1976-06-08 | 1976-06-08 | For telefonanleggningar med hogtalarforsedda telefonapparater avsedd styranordning |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK254577A true DK254577A (it) | 1977-12-09 |
| DK142390B DK142390B (da) | 1980-10-20 |
| DK142390C DK142390C (it) | 1981-03-16 |
Family
ID=20328149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK254577AA DK142390B (da) | 1976-06-08 | 1977-06-08 | Taleskifteanordning. |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4123620A (it) |
| AU (1) | AU508617B2 (it) |
| DE (1) | DE2726060A1 (it) |
| DK (1) | DK142390B (it) |
| FR (1) | FR2354668A1 (it) |
| GB (1) | GB1524756A (it) |
| NO (1) | NO141968B (it) |
| SE (1) | SE399502B (it) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1149524A (en) * | 1980-10-03 | 1983-07-05 | David H.A. Black | Noise signal level control in a tasi system |
| GB2122851B (en) * | 1982-06-10 | 1986-03-19 | Standard Telephones Cables Ltd | Loudspeaking telephones |
| GB2174578B (en) * | 1985-05-04 | 1988-11-09 | Stc Plc | Loud speaking telephone |
| DE4130045A1 (de) * | 1991-09-10 | 1993-03-18 | Standard Elektrik Lorenz Ag | Schaltungsanordnung zur dynamiksteuerung eines sprachendgeraetes |
| US5384838A (en) * | 1992-05-19 | 1995-01-24 | Hoffman; Ronald J. | System for communicating through partitions |
| US8284926B2 (en) * | 2007-09-26 | 2012-10-09 | Avaya Inc. | Enterprise-distributed noise management |
| US10751001B2 (en) | 2013-12-03 | 2020-08-25 | General Electric Company | Systems and methods for tracking and analysis of electrical-physiological interference |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3849603A (en) * | 1972-10-30 | 1974-11-19 | Mosler Safe Co | Remote banking intercom system |
| US3832491A (en) * | 1973-02-13 | 1974-08-27 | Communications Satellite Corp | Digital voice switch with an adaptive digitally-controlled threshold |
| US3958084A (en) * | 1974-09-30 | 1976-05-18 | Rockwell International Corporation | Conferencing apparatus |
| US4024345A (en) * | 1976-01-14 | 1977-05-17 | Strom Industries International, Inc. | Audio program and telephonic communication system |
-
1976
- 1976-06-08 SE SE7606399A patent/SE399502B/xx unknown
-
1977
- 1977-06-02 US US05/802,803 patent/US4123620A/en not_active Expired - Lifetime
- 1977-06-03 GB GB23793/77A patent/GB1524756A/en not_active Expired
- 1977-06-03 AU AU25805/77A patent/AU508617B2/en not_active Expired
- 1977-06-07 NO NO771984A patent/NO141968B/no unknown
- 1977-06-08 DK DK254577AA patent/DK142390B/da unknown
- 1977-06-08 DE DE19772726060 patent/DE2726060A1/de not_active Withdrawn
- 1977-06-08 FR FR7717584A patent/FR2354668A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| US4123620A (en) | 1978-10-31 |
| GB1524756A (en) | 1978-09-13 |
| AU508617B2 (en) | 1980-03-27 |
| AU2580577A (en) | 1978-12-07 |
| SE7606399L (sv) | 1977-12-09 |
| FR2354668A1 (fr) | 1978-01-06 |
| NO141968B (no) | 1980-02-25 |
| DK142390B (da) | 1980-10-20 |
| DE2726060A1 (de) | 1977-12-22 |
| DK142390C (it) | 1981-03-16 |
| SE399502B (sv) | 1978-02-13 |
| NO771984L (no) | 1977-12-09 |