GB199412A - Method for multiple high frequency telephony and telegraphy on wires - Google Patents
Method for multiple high frequency telephony and telegraphy on wiresInfo
- Publication number
- GB199412A GB199412A GB3455921A GB3455921A GB199412A GB 199412 A GB199412 A GB 199412A GB 3455921 A GB3455921 A GB 3455921A GB 3455921 A GB3455921 A GB 3455921A GB 199412 A GB199412 A GB 199412A
- Authority
- GB
- United Kingdom
- Prior art keywords
- modulation
- generator
- frequencies
- several
- effected
- 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
- 238000000034 method Methods 0.000 title abstract 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 abstract 1
- 230000011664 signaling Effects 0.000 abstract 1
- 230000003068 static effect Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/06—Arrangements for supplying the carrier waves ; Arrangements for supplying synchronisation signals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
199,412. Jones, H. Sefton-, (Lorenz Akt.- Ges., C.). Dec. 22, 1921. Multiplex signalling; wired wireless systems; magnetic modulating systems; oscillation generators.-In a multiplex wired wireless system, the various frequencies are all derived from the same machine, which may be of any type, by means of static frequency changers. Several lines may be simultaneously supplied with several frequencies by the same generator. Any method of modulation may be employed that does not affect the generator itself. As shown, a generator a supplies tuned circuits d, e, f with appropriate frequencies through frequency changers b, c. Intermediate tuned circuits h, in which the modulation is effected, transfer the wave to the line i. In order to lessen interference between the several channels, the circuits h and d, e, fare loosely coupled and suitable reverse, couplings may be used. Modulation may be effected thermionically. Reference has been directed by the Comptroller to Specifications 29946/13, 131,426, and 164,242.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEL50720D DE428916C (en) | 1921-12-22 | Method for high-frequency telephony and telegraphy on lines with several frequencies, which are taken from a high-frequency generator to generate undamped vibrations | |
| GB3455921A GB199412A (en) | 1921-12-22 | 1921-12-22 | Method for multiple high frequency telephony and telegraphy on wires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3455921A GB199412A (en) | 1921-12-22 | 1921-12-22 | Method for multiple high frequency telephony and telegraphy on wires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB199412A true GB199412A (en) | 1923-06-22 |
Family
ID=10367136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3455921A Expired GB199412A (en) | 1921-12-22 | 1921-12-22 | Method for multiple high frequency telephony and telegraphy on wires |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB199412A (en) |
-
1921
- 1921-12-22 GB GB3455921A patent/GB199412A/en not_active Expired
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