FR2582885B1 - Circuit de transmission a double sens muni de moyens de reglage automatique du gain selon le sens de transmission. - Google Patents
Circuit de transmission a double sens muni de moyens de reglage automatique du gain selon le sens de transmission.Info
- Publication number
- FR2582885B1 FR2582885B1 FR8508226A FR8508226A FR2582885B1 FR 2582885 B1 FR2582885 B1 FR 2582885B1 FR 8508226 A FR8508226 A FR 8508226A FR 8508226 A FR8508226 A FR 8508226A FR 2582885 B1 FR2582885 B1 FR 2582885B1
- Authority
- FR
- France
- Prior art keywords
- sense
- transmission
- means according
- adjustment means
- automatic gain
- Prior art date
- 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
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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8508226A FR2582885B1 (fr) | 1985-05-31 | 1985-05-31 | Circuit de transmission a double sens muni de moyens de reglage automatique du gain selon le sens de transmission. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8508226A FR2582885B1 (fr) | 1985-05-31 | 1985-05-31 | Circuit de transmission a double sens muni de moyens de reglage automatique du gain selon le sens de transmission. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2582885A1 FR2582885A1 (fr) | 1986-12-05 |
FR2582885B1 true FR2582885B1 (fr) | 1988-03-18 |
Family
ID=9319743
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8508226A Expired FR2582885B1 (fr) | 1985-05-31 | 1985-05-31 | Circuit de transmission a double sens muni de moyens de reglage automatique du gain selon le sens de transmission. |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2582885B1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2606958B1 (fr) * | 1986-11-17 | 1988-12-23 | Zurcher Frederic | Circuit de transmission a double sens muni de moyens symetriques de variation automatique du gain selon le sens de transmission |
JPS6412649A (en) * | 1987-07-06 | 1989-01-17 | Nec Corp | Variable gain circuit for loudspeaker telephone set |
FR2618626B1 (fr) * | 1987-07-21 | 1994-04-29 | Thomson Semiconducteurs | Dispositif de commande pour poste telephonique " mains libres " |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3970786A (en) * | 1974-06-27 | 1976-07-20 | Stromberg-Carlson Corporation | Loudspeaking telephone with improved receive sensitivity |
JPS5348601A (en) * | 1976-10-16 | 1978-05-02 | Oki Electric Ind Co Ltd | Noise control system |
-
1985
- 1985-05-31 FR FR8508226A patent/FR2582885B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2582885A1 (fr) | 1986-12-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
TP | Transmission of property |