FR1244664A - Systèmes de télécommunications du type multiplex - Google Patents
Systèmes de télécommunications du type multiplexInfo
- Publication number
- FR1244664A FR1244664A FR813877A FR813877A FR1244664A FR 1244664 A FR1244664 A FR 1244664A FR 813877 A FR813877 A FR 813877A FR 813877 A FR813877 A FR 813877A FR 1244664 A FR1244664 A FR 1244664A
- Authority
- FR
- France
- Prior art keywords
- telecommunications systems
- multiplex type
- multiplex
- type
- telecommunications
- 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
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/17—Time-division multiplex systems in which the transmission channel allotted to a first user may be taken away and re-allotted to a second user if the first user becomes inactive, e.g. TASI
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/17—Time-division multiplex systems in which the transmission channel allotted to a first user may be taken away and re-allotted to a second user if the first user becomes inactive, e.g. TASI
- H04J3/175—Speech activity or inactivity detectors
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US782550A US2958733A (en) | 1958-12-23 | 1958-12-23 | Transmission control in a two way communication system |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1244664A true FR1244664A (fr) | 1960-10-28 |
Family
ID=25126401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR813877A Expired FR1244664A (fr) | 1958-12-23 | 1959-12-22 | Systèmes de télécommunications du type multiplex |
Country Status (4)
Country | Link |
---|---|
US (1) | US2958733A (fr) |
DE (1) | DE1093829B (fr) |
FR (1) | FR1244664A (fr) |
GB (1) | GB879852A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2485839A1 (fr) * | 1980-06-27 | 1981-12-31 | Cit Alcatel | Procede de detection de parole dans un signal de circuit telephonique et detecteur de parole le mettant en oeuvre |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2157143A5 (fr) * | 1971-10-19 | 1973-06-01 | Queffeulou Jean Yves | |
US3832491A (en) * | 1973-02-13 | 1974-08-27 | Communications Satellite Corp | Digital voice switch with an adaptive digitally-controlled threshold |
US4005276A (en) * | 1975-03-20 | 1977-01-25 | International Business Machines Corporation | Digital voice signaling with digital echo detection and voice activity compression used to cancel echo |
US4523309A (en) * | 1978-12-05 | 1985-06-11 | Electronics Corporation Of Israel, Ltd. | Time assignment speech interpolation apparatus |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2541932A (en) * | 1948-05-19 | 1951-02-13 | Bell Telephone Labor Inc | Multiplex speech interpolation system |
US2694142A (en) * | 1949-11-10 | 1954-11-09 | Bell Telephone Labor Inc | Signal-to-noise energy detection unit |
US2719915A (en) * | 1951-07-28 | 1955-10-04 | Hartford Nat Bank & Trust Co | Automatic gain control amplifier |
US2766325A (en) * | 1951-09-01 | 1956-10-09 | Itt | Narrow band communication system |
-
1958
- 1958-12-23 US US782550A patent/US2958733A/en not_active Expired - Lifetime
-
1959
- 1959-12-10 DE DEW26859A patent/DE1093829B/de active Pending
- 1959-12-14 GB GB42419/59A patent/GB879852A/en not_active Expired
- 1959-12-22 FR FR813877A patent/FR1244664A/fr not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2485839A1 (fr) * | 1980-06-27 | 1981-12-31 | Cit Alcatel | Procede de detection de parole dans un signal de circuit telephonique et detecteur de parole le mettant en oeuvre |
EP0043056A1 (fr) * | 1980-06-27 | 1982-01-06 | COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL S.A. dite: | Procédé de détection de parole dans un signal de circuit téléphonique et détecteur de parole le mettant en oeuvre |
Also Published As
Publication number | Publication date |
---|---|
US2958733A (en) | 1960-11-01 |
DE1093829B (de) | 1960-12-01 |
GB879852A (en) | 1961-10-11 |
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