BE529981A - - Google Patents
Info
- Publication number
- BE529981A BE529981A BE529981DA BE529981A BE 529981 A BE529981 A BE 529981A BE 529981D A BE529981D A BE 529981DA BE 529981 A BE529981 A BE 529981A
- Authority
- BE
- Belgium
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
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
- G01S1/68—Marker, boundary, call-sign, or like beacons transmitting signals not carrying directional information
-
- 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
- H04B1/69—Spread spectrum techniques
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/12—Frequency diversity
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Transmitters (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US364571A US2895009A (en) | 1953-06-29 | 1953-06-29 | Channeling system for frequency spectrum transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE529981A true BE529981A (US07816562-20101019-C00012.png) |
Family
ID=23435100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE529981D BE529981A (US07816562-20101019-C00012.png) | 1953-06-29 |
Country Status (6)
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2976363A (en) * | 1957-12-30 | 1961-03-21 | Gen Electric | Modulation of selected phases of carriers for simultaneous transmission through single delay means |
| US3605017A (en) * | 1969-06-06 | 1971-09-14 | Eg & G Inc | Single sideband data transmission system |
| GB2177875A (en) * | 1985-07-08 | 1987-01-28 | Philips Electronic Associated | Radio transmission system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL35164C (US07816562-20101019-C00012.png) * | 1931-08-14 | |||
| US2426460A (en) * | 1943-10-27 | 1947-08-26 | Hazeltine Research Inc | System for locating a radiatedsignal reflector |
| US2430296A (en) * | 1943-10-27 | 1947-11-04 | Hazeltine Research Inc | Radiated-signal receiving system |
| US2429726A (en) * | 1943-10-27 | 1947-10-28 | Hazeltine Research Inc | System for space scanning with a radiated wave-signal beam |
| US2437281A (en) * | 1944-07-19 | 1948-03-09 | Sperry Corp | High-frequency radiant energy apparatus |
| CH248975A (de) * | 1946-02-04 | 1947-05-31 | Patelhold Patentverwertung | Verfahren und Einrichtung zur Verschleierung der einzelnen Gespräche einer Mehrkanalanlage. |
| US2497859A (en) * | 1947-11-19 | 1950-02-21 | Western Union Telegraph Co | Frequency diversity telegraph system |
| US2611825A (en) * | 1948-04-28 | 1952-09-23 | Donald B Harris | Multichannel transmission system |
| US2559644A (en) * | 1948-09-18 | 1951-07-10 | Rca Corp | Pulse multiplex system |
-
0
- BE BE529981D patent/BE529981A/xx unknown
- NL NLAANVRAGE7809632,B patent/NL188694B/xx unknown
-
1953
- 1953-06-29 US US364571A patent/US2895009A/en not_active Expired - Lifetime
-
1954
- 1954-06-25 DE DEI8826A patent/DE1019721B/de active Pending
- 1954-06-25 FR FR1103181D patent/FR1103181A/fr not_active Expired
- 1954-06-25 GB GB18683/54A patent/GB751179A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB751179A (en) | 1956-06-27 |
| FR1103181A (fr) | 1955-10-31 |
| DE1019721B (de) | 1957-11-21 |
| US2895009A (en) | 1959-07-14 |
| NL188694B (nl) |
