JPS3813707B1 - - Google Patents
Info
- Publication number
- JPS3813707B1 JPS3813707B1 JP96656060A JP96656060A JPS3813707B1 JP S3813707 B1 JPS3813707 B1 JP S3813707B1 JP 96656060 A JP96656060 A JP 96656060A JP 96656060 A JP96656060 A JP 96656060A JP S3813707 B1 JPS3813707 B1 JP S3813707B1
- Authority
- JP
- Japan
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D1/00—Demodulation of amplitude-modulated oscillations
- H03D1/22—Homodyne or synchrodyne circuits
-
- 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
-
- 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)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Radar Systems Or Details Thereof (AREA)
- Near-Field Transmission Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15859A US3172101A (en) | 1960-03-18 | 1960-03-18 | Coherent signalling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS3813707B1 true JPS3813707B1 (US08197722-20120612-C00093.png) | 1963-07-31 |
Family
ID=21774044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP96656060A Pending JPS3813707B1 (US08197722-20120612-C00093.png) | 1960-03-18 | 1960-03-18 |
Country Status (5)
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3806905A (en) * | 1971-09-08 | 1974-04-23 | Sperry Rand Corp | Transducer and condition monitor |
| US4117481A (en) * | 1972-05-30 | 1978-09-26 | James Nickolas Constant | Sidelooking radar and system for identifying objects |
| US4314373A (en) * | 1976-05-24 | 1982-02-02 | Harris Corporation | Passive transmitter including parametric device |
| US4481428A (en) * | 1981-05-19 | 1984-11-06 | Security Tag Systems, Inc. | Batteryless, portable, frequency divider useful as a transponder of electromagnetic radiation |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA545294A (en) * | 1957-08-27 | Guanella Gustav | Frequency modulated repeater for radio links | |
| US2421106A (en) * | 1943-01-21 | 1947-05-27 | Gen Railway Signal Co | Airway traffic control system |
| US2851592A (en) * | 1952-12-03 | 1958-09-09 | Rca Corp | Carrier wave powered radio transceiver circuits |
-
1960
- 1960-03-18 US US15859A patent/US3172101A/en not_active Expired - Lifetime
- 1960-03-18 JP JP96656060A patent/JPS3813707B1/ja active Pending
-
1961
- 1961-03-15 DE DE19611416101 patent/DE1416101B2/de active Pending
- 1961-03-16 GB GB9690/61A patent/GB984581A/en not_active Expired
- 1961-03-17 CH CH321761A patent/CH393988A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1416101A1 (de) | 1968-10-03 |
| GB984581A (en) | 1965-02-24 |
| DE1416101B2 (de) | 1971-05-06 |
| US3172101A (en) | 1965-03-02 |
| CH393988A (de) | 1965-06-15 |
