GB414560A - Improvements in telephone plants for wireless transmission of communications - Google Patents
Improvements in telephone plants for wireless transmission of communicationsInfo
- Publication number
- GB414560A GB414560A GB33154/33A GB3315433A GB414560A GB 414560 A GB414560 A GB 414560A GB 33154/33 A GB33154/33 A GB 33154/33A GB 3315433 A GB3315433 A GB 3315433A GB 414560 A GB414560 A GB 414560A
- Authority
- GB
- United Kingdom
- Prior art keywords
- picked
- loop aerial
- speech
- communications
- wireless transmission
- Prior art date
- 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
- 230000005540 biological transmission Effects 0.000 title 1
- 230000014616 translation Effects 0.000 abstract 2
- 238000013519 translation Methods 0.000 abstract 2
- 239000013078 crystal Substances 0.000 abstract 1
- 230000011664 signaling Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
Abstract
414,560. Wireless signalling. TELEFONAKTIEBOLAGET L. M. ERICSSON, 33, Kungsgatan, Stockholm. Nov. 27, 1933, No. 33154. Convention date, July 7. [Class 40 (v).] Wireless equipment is designed for the localized distribution of a speech and simultaneous translations in different languages to the members, say of an international congress. The direct speech is picked up by a microphone M4 and relayed by loud-speakers L. Corresponding translations are spoken into microphones M1-M3 and radiated on different carrier waves from a loop aerial As, which surrounds the conference room and may be crossed in the middle to ensure uniform field-strength. The messages are picked up by small loop aerial Ae, Fig. 3, and a portable crystal and headphone set E, H, carried by each listener. The receiver comprises a switch U, Fig. 4, for selecting the desired carrier-wave.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH414560X | 1933-07-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB414560A true GB414560A (en) | 1934-08-09 |
Family
ID=4514529
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB33154/33A Expired GB414560A (en) | 1933-07-07 | 1933-11-27 | Improvements in telephone plants for wireless transmission of communications |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE399765A (en) |
FR (1) | FR764295A (en) |
GB (1) | GB414560A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2567431A (en) * | 1947-05-05 | 1951-09-11 | William S Halstead | Communications system of restricted-range type |
DE1038116B (en) * | 1956-03-13 | 1958-09-04 | Siemens Ag | Conductor loop for inductive reception with hearing aids or the like. |
US2883523A (en) * | 1955-09-07 | 1959-04-21 | Francis P Meserow | Wireless communication system |
US3218508A (en) * | 1962-04-10 | 1965-11-16 | Varian Associates | High voltage power supply |
DE1272384B (en) * | 1963-10-31 | 1968-07-11 | Funke Huster Elektrizitaets | Loop antenna for a portable speaker, especially for underground operations |
WO1985000669A1 (en) * | 1983-08-01 | 1985-02-14 | Roland Anthony M | Multiple sound picture projection cinema |
GB2384367A (en) * | 2002-01-22 | 2003-07-23 | Benjamin Edginton | Multi-band small loop antenna |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3118144A (en) * | 1961-02-15 | 1964-01-14 | Electrotone Lab Inc | Low power multi-frequency communication system |
-
0
- BE BE399765D patent/BE399765A/xx unknown
-
1933
- 1933-11-23 FR FR764295D patent/FR764295A/en not_active Expired
- 1933-11-27 GB GB33154/33A patent/GB414560A/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2567431A (en) * | 1947-05-05 | 1951-09-11 | William S Halstead | Communications system of restricted-range type |
US2883523A (en) * | 1955-09-07 | 1959-04-21 | Francis P Meserow | Wireless communication system |
DE1038116B (en) * | 1956-03-13 | 1958-09-04 | Siemens Ag | Conductor loop for inductive reception with hearing aids or the like. |
US3218508A (en) * | 1962-04-10 | 1965-11-16 | Varian Associates | High voltage power supply |
DE1272384B (en) * | 1963-10-31 | 1968-07-11 | Funke Huster Elektrizitaets | Loop antenna for a portable speaker, especially for underground operations |
WO1985000669A1 (en) * | 1983-08-01 | 1985-02-14 | Roland Anthony M | Multiple sound picture projection cinema |
US4555167A (en) * | 1983-08-01 | 1985-11-26 | Roland Anthony M | Multiple sound picture projection cinema |
GB2384367A (en) * | 2002-01-22 | 2003-07-23 | Benjamin Edginton | Multi-band small loop antenna |
Also Published As
Publication number | Publication date |
---|---|
FR764295A (en) | 1934-05-17 |
BE399765A (en) |
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