FR2251135B1 - - Google Patents
Info
- Publication number
- FR2251135B1 FR2251135B1 FR7437382A FR7437382A FR2251135B1 FR 2251135 B1 FR2251135 B1 FR 2251135B1 FR 7437382 A FR7437382 A FR 7437382A FR 7437382 A FR7437382 A FR 7437382A FR 2251135 B1 FR2251135 B1 FR 2251135B1
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
- B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
- B61L3/08—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically
- B61L3/12—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves
- B61L3/125—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves using short-range radio transmission
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/04—Indicating or recording train identities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/04—Indicating or recording train identities
- B61L25/045—Indicating or recording train identities using reradiating tags
-
- 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
- G01S13/75—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors
- G01S13/751—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal
- G01S13/758—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal using a signal generator powered by the interrogation signal
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7315348A SE380220B (en) | 1973-11-13 | 1973-11-13 | INFORMATION TRANSMISSION SYSTEM FOR WIRELESS TRANSMISSION WITH A QUESTION STATION AND AN ANSWER |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2251135A1 FR2251135A1 (en) | 1975-06-06 |
| FR2251135B1 true FR2251135B1 (en) | 1979-05-25 |
Family
ID=20319090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7437382A Granted FR2251135A1 (en) | 1973-11-13 | 1974-11-13 | Radio signal transmission system - has an interrogation station delivering an H.F. interrogation signal and an answering station |
Country Status (6)
| Country | Link |
|---|---|
| CA (1) | CA1037124A (en) |
| DE (1) | DE2453647A1 (en) |
| DK (1) | DK587674A (en) |
| FR (1) | FR2251135A1 (en) |
| NO (1) | NO743872L (en) |
| SE (1) | SE380220B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3009179A1 (en) * | 1980-03-11 | 1981-09-24 | Brown, Boveri & Cie Ag, 6800 Mannheim | METHOD AND DEVICE FOR GENERATING THE REPLY SIGNAL OF A DEVICE FOR AUTOMATICALLY IDENTIFYING OBJECTS AND / OR LIVING BEINGS |
| ZA829121B (en) * | 1981-12-18 | 1983-09-28 | Senelco Ltd | Transmitter/responder systems |
| GB2112607B (en) * | 1981-12-18 | 1986-01-02 | Senelco Ltd | Transmitter/responder systems |
| DE3242978A1 (en) * | 1982-11-20 | 1984-05-24 | Diehl GmbH & Co, 8500 Nürnberg | Remote-control device, especially for controlling the comfort influences in the seating region in the cabins of high-capacity commercial aircraft |
| DE3307579A1 (en) * | 1983-03-03 | 1984-11-29 | Jürgen Dipl.-Ing. 8017 Ebersberg Machate | DEVICE FOR CONTACTLY INQUIRING A RELATED DATA CARRIER |
| US4656463A (en) * | 1983-04-21 | 1987-04-07 | Intelli-Tech Corporation | LIMIS systems, devices and methods |
| SE500030C2 (en) * | 1990-05-14 | 1994-03-21 | Bengt Henoch | Procedure for storing complicated product life data |
-
1973
- 1973-11-13 SE SE7315348A patent/SE380220B/en unknown
-
1974
- 1974-10-28 NO NO743872A patent/NO743872L/no unknown
- 1974-11-12 DE DE19742453647 patent/DE2453647A1/en not_active Withdrawn
- 1974-11-12 DK DK587674A patent/DK587674A/da unknown
- 1974-11-12 CA CA213,537A patent/CA1037124A/en not_active Expired
- 1974-11-13 FR FR7437382A patent/FR2251135A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| SE7315348L (en) | 1975-05-14 |
| SE380220B (en) | 1975-11-03 |
| DE2453647A1 (en) | 1975-05-15 |
| NO743872L (en) | 1975-06-09 |
| CA1037124A (en) | 1978-08-22 |
| DK587674A (en) | 1975-07-07 |
| FR2251135A1 (en) | 1975-06-06 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |