ATE9253T1 - Vorverstaerker mit traegerstrom, schalter zum unterbrechen des mikrophons und eine vorrichtung zum signalisieren dieser unterbrechung enthaltender fernsprechapparat. - Google Patents
Vorverstaerker mit traegerstrom, schalter zum unterbrechen des mikrophons und eine vorrichtung zum signalisieren dieser unterbrechung enthaltender fernsprechapparat.Info
- Publication number
- ATE9253T1 ATE9253T1 AT81109647T AT81109647T ATE9253T1 AT E9253 T1 ATE9253 T1 AT E9253T1 AT 81109647 T AT81109647 T AT 81109647T AT 81109647 T AT81109647 T AT 81109647T AT E9253 T1 ATE9253 T1 AT E9253T1
- Authority
- AT
- Austria
- Prior art keywords
- switch
- interrupting
- preamplifier
- interruption
- microphone
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6008—Substation equipment, e.g. for use by subscribers including speech amplifiers in the transmitter circuit
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Telephone Function (AREA)
- Transceivers (AREA)
- Optical Communication System (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8024599A FR2494530B1 (fr) | 1980-11-17 | 1980-11-17 | Poste telephonique comportant un preamplificateur a courant porteur, un interrupteur de coupure de micro et un dispositif de signalisation de cette coupure |
EP81109647A EP0052347B1 (de) | 1980-11-17 | 1981-11-12 | Vorverstärker mit Trägerstrom, Schalter zum Unterbrechen des Mikrophons und eine Vorrichtung zum Signalisieren dieser Unterbrechung enthaltender Fernsprechapparat |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE9253T1 true ATE9253T1 (de) | 1984-09-15 |
Family
ID=9248148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT81109647T ATE9253T1 (de) | 1980-11-17 | 1981-11-12 | Vorverstaerker mit traegerstrom, schalter zum unterbrechen des mikrophons und eine vorrichtung zum signalisieren dieser unterbrechung enthaltender fernsprechapparat. |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0052347B1 (de) |
JP (1) | JPS57112161A (de) |
AT (1) | ATE9253T1 (de) |
DE (1) | DE3165869D1 (de) |
ES (1) | ES8301085A1 (de) |
FR (1) | FR2494530B1 (de) |
GR (1) | GR76934B (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63151119A (ja) * | 1986-12-15 | 1988-06-23 | Nec Corp | プレス検出回路 |
US11928385B2 (en) | 2019-07-30 | 2024-03-12 | Hewlett-Packard Development Company, L.P. | Sound processing logic connections |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH341195A (de) * | 1956-11-09 | 1959-09-30 | Zellweger Uster Ag | Verfahren zum Einbau eines Transistorverstärkers in einen Telephonteilnehmerapparat und Mikrophonkapsel zur Durchführung des Verfahrens |
GB1525964A (en) * | 1975-11-20 | 1978-09-27 | Standard Telephones Cables Ltd | Telephone microphone |
-
1980
- 1980-11-17 FR FR8024599A patent/FR2494530B1/fr not_active Expired
-
1981
- 1981-11-12 AT AT81109647T patent/ATE9253T1/de not_active IP Right Cessation
- 1981-11-12 DE DE8181109647T patent/DE3165869D1/de not_active Expired
- 1981-11-12 EP EP81109647A patent/EP0052347B1/de not_active Expired
- 1981-11-16 GR GR66533A patent/GR76934B/el unknown
- 1981-11-16 JP JP56183613A patent/JPS57112161A/ja active Pending
- 1981-11-17 ES ES507791A patent/ES8301085A1/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
ES507791A0 (es) | 1982-11-01 |
FR2494530B1 (fr) | 1987-09-25 |
EP0052347A1 (de) | 1982-05-26 |
EP0052347B1 (de) | 1984-09-05 |
ES8301085A1 (es) | 1982-11-01 |
JPS57112161A (en) | 1982-07-13 |
FR2494530A1 (fr) | 1982-05-21 |
GR76934B (de) | 1984-09-04 |
DE3165869D1 (en) | 1984-10-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |