FR2250169B1 - - Google Patents
Info
- Publication number
- FR2250169B1 FR2250169B1 FR7433433A FR7433433A FR2250169B1 FR 2250169 B1 FR2250169 B1 FR 2250169B1 FR 7433433 A FR7433433 A FR 7433433A FR 7433433 A FR7433433 A FR 7433433A FR 2250169 B1 FR2250169 B1 FR 2250169B1
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
- G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
- G01S13/78—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted discriminating between different kinds of targets, e.g. IFF-radar, i.e. identification of friend or foe
- G01S13/781—Secondary Surveillance Radar [SSR] in general
- G01S13/782—Secondary Surveillance Radar [SSR] in general using multimoding or selective addressing
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US41374673A | 1973-11-07 | 1973-11-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2250169A1 FR2250169A1 (en) | 1975-05-30 |
FR2250169B1 true FR2250169B1 (en) | 1981-06-12 |
Family
ID=23638449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7433433A Expired FR2250169B1 (en) | 1973-11-07 | 1974-10-04 |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS5079099A (en) |
DE (1) | DE2446647A1 (en) |
FR (1) | FR2250169B1 (en) |
GB (1) | GB1423126A (en) |
IT (1) | IT1025493B (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2023899B (en) * | 1978-06-14 | 1982-10-27 | Hitachi Ltd | Remote-controlled automatic control apparatus |
FR2465232A1 (en) * | 1979-09-10 | 1981-03-20 | Thomson Csf Mat Tel | Secondary radar system for traffic control - uses coded responders on mobile vehicles, response to addressed interrogations from monitoring station |
US4480315A (en) * | 1982-08-16 | 1984-10-30 | Fairchild Camera & Instrument Corp. | Dynamically controllable addressing in automatic test equipment |
US4535333A (en) * | 1982-09-23 | 1985-08-13 | Chamberlain Manufacturing Corporation | Transmitter and receiver for controlling remote elements |
GB8408538D0 (en) * | 1984-04-03 | 1984-05-16 | Senelco Ltd | Transmitter-responder systems |
USRE35364E (en) | 1985-10-29 | 1996-10-29 | The Chamberlain Group, Inc. | Coding system for multiple transmitters and a single receiver for a garage door opener |
GB8432302D0 (en) * | 1984-12-20 | 1985-01-30 | Conway R | Installation for visually displaying pre-determined messages |
JPS61194989A (en) * | 1985-02-22 | 1986-08-29 | Mitsubishi Electric Corp | Still picture transmitter |
GB2176639B (en) * | 1985-05-31 | 1988-11-23 | Mars Inc | Data acquisition system |
JPH069070B2 (en) * | 1987-04-10 | 1994-02-02 | ニツタン株式会社 | Information monitoring control system |
-
1974
- 1974-09-20 GB GB4109474A patent/GB1423126A/en not_active Expired
- 1974-09-30 DE DE19742446647 patent/DE2446647A1/en not_active Withdrawn
- 1974-10-04 FR FR7433433A patent/FR2250169B1/fr not_active Expired
- 1974-11-07 IT IT2919174A patent/IT1025493B/en active
- 1974-11-07 JP JP12760974A patent/JPS5079099A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
FR2250169A1 (en) | 1975-05-30 |
IT1025493B (en) | 1978-08-10 |
DE2446647A1 (en) | 1975-05-15 |
GB1423126A (en) | 1976-01-28 |
JPS5079099A (en) | 1975-06-27 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |