FR2173018B1 - - Google Patents
Info
- Publication number
- FR2173018B1 FR2173018B1 FR7305111A FR7305111A FR2173018B1 FR 2173018 B1 FR2173018 B1 FR 2173018B1 FR 7305111 A FR7305111 A FR 7305111A FR 7305111 A FR7305111 A FR 7305111A FR 2173018 B1 FR2173018 B1 FR 2173018B1
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/17—Ground-based stations employing pulse modulation, e.g. pulse code modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/44—Transmit/receive switching
- H04B1/48—Transmit/receive switching in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/54—Circuits using the same frequency for two directions of communication
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Relay Systems (AREA)
- Selective Calling Equipment (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US22853272A | 1972-02-23 | 1972-02-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2173018A1 FR2173018A1 (US08118993-20120221-C00002.png) | 1973-10-05 |
| FR2173018B1 true FR2173018B1 (US08118993-20120221-C00002.png) | 1977-08-19 |
Family
ID=22857561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7305111A Expired FR2173018B1 (US08118993-20120221-C00002.png) | 1972-02-23 | 1973-02-14 |
Country Status (7)
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1480255A (en) * | 1973-09-22 | 1977-07-20 | Sony Corp | Transmitter/receivers |
| GB201306150D0 (en) * | 2013-04-05 | 2013-05-22 | Kirintec Ltd | Communications system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE477656A (US08118993-20120221-C00002.png) * | 1943-12-11 | |||
| BE508192A (US08118993-20120221-C00002.png) * | 1953-06-15 |
-
1972
- 1972-02-23 US US00228532A patent/US3753112A/en not_active Expired - Lifetime
- 1972-08-15 CA CA149,479A patent/CA987004A/en not_active Expired
-
1973
- 1973-02-05 GB GB564573A patent/GB1377334A/en not_active Expired
- 1973-02-14 FR FR7305111A patent/FR2173018B1/fr not_active Expired
- 1973-02-21 DE DE19732308521 patent/DE2308521A1/de active Pending
- 1973-02-22 JP JP48020782A patent/JPS48100008A/ja active Pending
- 1973-02-22 IT IT20699/73A patent/IT979358B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| FR2173018A1 (US08118993-20120221-C00002.png) | 1973-10-05 |
| IT979358B (it) | 1974-09-30 |
| US3753112A (en) | 1973-08-14 |
| DE2308521A1 (de) | 1973-08-30 |
| AU5242473A (en) | 1974-08-22 |
| JPS48100008A (US08118993-20120221-C00002.png) | 1973-12-18 |
| GB1377334A (en) | 1974-12-11 |
| CA987004A (en) | 1976-04-06 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |