GB673515A - Improvements in teleprinter communication systems - Google Patents
Improvements in teleprinter communication systemsInfo
- Publication number
- GB673515A GB673515A GB13573/50A GB1357350A GB673515A GB 673515 A GB673515 A GB 673515A GB 13573/50 A GB13573/50 A GB 13573/50A GB 1357350 A GB1357350 A GB 1357350A GB 673515 A GB673515 A GB 673515A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vibrator
- responsive
- carrier
- audio frequency
- communication systems
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
673,515. Type-printing telegraphy. ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI. May 31, 1950 [June 1, 1949], No. 13573/50. Class 40 (iii). [Also in Group XL (c)] In a radio-frequency teleprinter communication channel wherein the carrier is amplitude modulated with a different audio frequency for each character, the effects of selection fading are eliminated by providing at the receiver a pair of tuned vibrators for each audio frequency. One vibrator is responsive to the fundamental which is obtained during normal reception and the other is responsive to the first harmonic which is obtained when the carrier fades, the operation of either vibrator initiating the printing operation.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR835755X | 1949-06-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB673515A true GB673515A (en) | 1952-06-04 |
Family
ID=9297764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13573/50A Expired GB673515A (en) | 1949-06-01 | 1950-05-31 | Improvements in teleprinter communication systems |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE495907A (en) |
| DE (1) | DE835755C (en) |
| FR (1) | FR992838A (en) |
| GB (1) | GB673515A (en) |
-
1949
- 1949-06-01 FR FR992838D patent/FR992838A/en not_active Expired
-
1950
- 1950-05-23 BE BE495907A patent/BE495907A/en unknown
- 1950-05-31 GB GB13573/50A patent/GB673515A/en not_active Expired
- 1950-09-29 DE DEA3771A patent/DE835755C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE495907A (en) | 1950-09-16 |
| FR992838A (en) | 1951-10-23 |
| DE835755C (en) | 1952-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES386198A1 (en) | Radio receiver for single sideband reception | |
| GB574674A (en) | Radio communicating system | |
| GB905128A (en) | Improvements in radio links | |
| GB670442A (en) | Improvements in television transmitters | |
| GB1368678A (en) | Spread spectrum linear fm communications system | |
| GB551472A (en) | Improvements in modulated high frequency carrier wave signalling systems | |
| GB678079A (en) | Improvements in receiving stations for transmission systems with suppressed carrier wave | |
| GB500883A (en) | Improvements in dual tone radio telegraphy system | |
| GB548599A (en) | Improvements in frequency modulation systems for radio communication | |
| GB673515A (en) | Improvements in teleprinter communication systems | |
| GB695901A (en) | Improvements in or relating to telegraph receivers | |
| US1898477A (en) | Fading elimination | |
| US1911091A (en) | Signaling | |
| GB355164A (en) | Improvements in or relating to high frequency signalling systems | |
| JPS5642448A (en) | Radio transmission-reception system | |
| GB461749A (en) | Improvements in or relating to systems of radio transmission and reception | |
| GB698587A (en) | Improvements in radio electric teleprinter systems | |
| GB817713A (en) | Improvements relating to radio relays | |
| JPS572145A (en) | Radio transmission system | |
| GB695353A (en) | Improvements in or relating to radio signalling systems | |
| GB632895A (en) | Two-way radio communication system | |
| GB850110A (en) | Improvements in or relating to radio communication systems | |
| GB640835A (en) | Improvements in and relating to combined radio transmitting and receiving equipment | |
| GB628210A (en) | Improvements in wireless receiving systems for carrier shift telegraphy | |
| GB612967A (en) | Improvements in or relating to very high frequency radio communication systems |