FR2182975A1 - - Google Patents
Info
- Publication number
- FR2182975A1 FR2182975A1 FR7313915A FR7313915A FR2182975A1 FR 2182975 A1 FR2182975 A1 FR 2182975A1 FR 7313915 A FR7313915 A FR 7313915A FR 7313915 A FR7313915 A FR 7313915A FR 2182975 A1 FR2182975 A1 FR 2182975A1
- Authority
- FR
- France
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/02—Selecting arrangements for multiplex systems for frequency-division multiplexing
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Small-Scale Networks (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00250228A US3809815A (en) | 1972-05-04 | 1972-05-04 | Communication system utilizing frequency division multiplexing to link a plurality of stations each containing a switchable synthesizer |
| US00265446A US3809816A (en) | 1972-05-04 | 1972-06-23 | Communication system utilizing frequency division multiplexing and a frequency plan therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2182975A1 true FR2182975A1 (US06653308-20031125-C00199.png) | 1973-12-14 |
| FR2182975B1 FR2182975B1 (US06653308-20031125-C00199.png) | 1976-05-28 |
Family
ID=26940705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7313915A Expired FR2182975B1 (US06653308-20031125-C00199.png) | 1972-05-04 | 1973-04-17 |
Country Status (10)
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2446038A1 (fr) * | 1979-01-08 | 1980-08-01 | Catalyst Research Corp | Systeme telephonique |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4013840A (en) * | 1972-05-15 | 1977-03-22 | Teleplex, Inc. | Tdm and fdm telephone communication |
| US4020289A (en) * | 1972-05-15 | 1977-04-26 | Teleplex, Inc. | Random access, multiple station communication system |
| US4057804A (en) * | 1973-06-21 | 1977-11-08 | Holme Communications Systems, Inc. | Branched path communications apparatus for routing communications signals |
| US3864521A (en) * | 1973-10-25 | 1975-02-04 | Rockwell International Corp | Frequency division multiplex telephone system |
| FR2290103A1 (fr) * | 1974-10-31 | 1976-05-28 | Thomson Csf | Artere telephonique a points d'acces multiples et reseau comportant de telles arteres |
| FR2307411A1 (fr) * | 1975-04-11 | 1976-11-05 | Thomson Csf | Poste telephonique a generateur de porteurs programmable et systeme telephonique utilisant un tel poste |
| US4016493A (en) * | 1975-10-22 | 1977-04-05 | General Electric Company | Simplified land line and satellite communication switching system |
| US4130733A (en) * | 1977-01-10 | 1978-12-19 | International Telephone & Telegraph Corp. | Frequency channel units for a FDM system |
| US4107471A (en) * | 1977-03-22 | 1978-08-15 | International Telephone & Telegraph Corp. | Frequency division multiplex communications system |
| US4339816A (en) * | 1980-05-29 | 1982-07-13 | International Telephone And Telegraph Corporation | Conferencing apparatus and methods for a frequency division multiplex communications system |
| US4380062A (en) * | 1981-04-22 | 1983-04-12 | Rixon, Inc. | Communication system providing simultaneous two-way transmission |
| ZA827851B (en) * | 1981-11-04 | 1984-06-27 | Racal Acoustics Ltd | Communication set and method |
| US4523307A (en) * | 1982-11-30 | 1985-06-11 | Astech, Inc. | Power line carrier multi telephone extension system for full duplex conferencing and intercom between telephones |
| US4789980A (en) * | 1986-08-18 | 1988-12-06 | American Telephone & Telegraph Company, At&T Bell Laboratories | Switching techniques for FDM communication systems |
| US4754452A (en) * | 1986-09-11 | 1988-06-28 | American Telephone And Telegraph Company, At&T Bell Laboratories | Optical local area network using a common optical carrier with separate user angle modulation |
| US4996709A (en) * | 1988-05-12 | 1991-02-26 | Tandy Corporation | Intercom telephone |
| US5090052A (en) * | 1989-05-18 | 1992-02-18 | Tandy Corporation | Telephone system with multiple extension telephones |
| US5911119A (en) * | 1993-03-22 | 1999-06-08 | Phonex Corporation | Secure cordless telephone extension system and method |
| US5530737A (en) * | 1993-03-22 | 1996-06-25 | Phonex Corporation | Secure access telephone extension system and method |
| US6031949A (en) * | 1996-03-27 | 2000-02-29 | Forfas | Optical data communication system |
| US6265788B1 (en) * | 1999-11-05 | 2001-07-24 | Ericsson Inc. | Wireless induction loop control system |
| JP4158703B2 (ja) | 2002-03-04 | 2008-10-01 | ソニー株式会社 | 無線通信システム、無線通信装置及び無線通信方法、並びにコンピュータ・プログラム |
| US7542678B2 (en) * | 2004-12-30 | 2009-06-02 | Alcatel-Lucent Usa Inc. | Method and apparatus for a supervisory channel in a WDM fiber-optic communication system |
| EP2681632B1 (de) * | 2011-03-01 | 2017-11-08 | AS-International Association e.V. | Bussystem mit einem master und einer gruppe von slaves sowie kommunikationsverfahren zum austausch von daten in einem derartigen bussystem |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1018011A (fr) * | 1949-03-29 | 1952-12-24 | Perfectionnements aux systèmes de commutation électronique | |
| FR1473296A (fr) * | 1966-02-03 | 1967-03-17 | Socrat Ste De Const Radiotelep | Dispositif de radiotéléphonie |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2607853A (en) * | 1947-01-27 | 1952-08-19 | British Telecomm Res Ltd | Telecommunication system |
| US2721897A (en) * | 1951-01-13 | 1955-10-25 | Bell Telephone Labor Inc | Carrier wave communication system |
| US2819344A (en) * | 1952-07-28 | 1958-01-07 | Rca Corp | Frequency division multiplexing |
| FR1549456A (US06653308-20031125-C00199.png) * | 1967-10-30 | 1968-12-13 | ||
| US3550132A (en) * | 1967-12-27 | 1970-12-22 | Bell Telephone Labor Inc | Digital phase locked loop |
| US3551826A (en) * | 1968-05-16 | 1970-12-29 | Raytheon Co | Frequency multiplier and frequency waveform generator |
| US3548106A (en) * | 1969-07-24 | 1970-12-15 | Anaconda Wire & Cable Co | Rural subscriber telephone system |
-
1972
- 1972-05-04 US US00250228A patent/US3809815A/en not_active Expired - Lifetime
- 1972-06-23 US US00265446A patent/US3809816A/en not_active Expired - Lifetime
-
1973
- 1973-03-06 CA CA165,327A patent/CA984530A/en not_active Expired
- 1973-03-06 CA CA165,326A patent/CA984529A/en not_active Expired
- 1973-03-27 DE DE2315247A patent/DE2315247C3/de not_active Expired
- 1973-04-17 FR FR7313915A patent/FR2182975B1/fr not_active Expired
- 1973-04-17 NL NL7305372A patent/NL7305372A/xx not_active Application Discontinuation
- 1973-04-24 BE BE130312A patent/BE798596A/xx unknown
- 1973-05-02 JP JP48048586A patent/JPS4956520A/ja active Pending
- 1973-05-02 SE SE7306114A patent/SE386338B/xx unknown
- 1973-05-03 IT IT49771/73A patent/IT984902B/it active
- 1973-05-03 GB GB2115573A patent/GB1422375A/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1018011A (fr) * | 1949-03-29 | 1952-12-24 | Perfectionnements aux systèmes de commutation électronique | |
| FR1473296A (fr) * | 1966-02-03 | 1967-03-17 | Socrat Ste De Const Radiotelep | Dispositif de radiotéléphonie |
Non-Patent Citations (3)
| Title |
|---|
| ARTICLE DE KLOEPFER: "MOBILE RADIO-COMMUNICATION EQUIPMENT * |
| NEW TECHNIQUES FOR DESIGN AND MANUFACTURE" * |
| REVUE US ELECTRICAL COMMUNICATION, VOL. 45, NO. 1, 1970, PAGES 30-40 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2446038A1 (fr) * | 1979-01-08 | 1980-08-01 | Catalyst Research Corp | Systeme telephonique |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2315247C3 (de) | 1975-09-25 |
| US3809815A (en) | 1974-05-07 |
| SE386338B (sv) | 1976-08-02 |
| CA984530A (en) | 1976-02-24 |
| US3809816A (en) | 1974-05-07 |
| GB1422375A (en) | 1976-01-28 |
| DE2315247B2 (de) | 1975-02-13 |
| DE2315247A1 (de) | 1973-11-15 |
| NL7305372A (US06653308-20031125-C00199.png) | 1973-11-06 |
| FR2182975B1 (US06653308-20031125-C00199.png) | 1976-05-28 |
| CA984529A (en) | 1976-02-24 |
| JPS4956520A (US06653308-20031125-C00199.png) | 1974-06-01 |
| BE798596A (fr) | 1973-10-24 |
| IT984902B (it) | 1974-11-20 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |