FR77401E - Fast telegraph device - Google Patents
Fast telegraph deviceInfo
- Publication number
- FR77401E FR77401E FR816212A FR816212A FR77401E FR 77401 E FR77401 E FR 77401E FR 816212 A FR816212 A FR 816212A FR 816212 A FR816212 A FR 816212A FR 77401 E FR77401 E FR 77401E
- Authority
- FR
- France
- Prior art keywords
- fast
- telegraph device
- telegraph
- fast telegraph
- 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
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
- H04L25/4902—Pulse width modulation; Pulse position modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
- H04L25/4917—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR816212A FR77401E (en) | 1957-06-27 | 1960-01-19 | Fast telegraph device |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2947813X | 1957-06-27 | ||
US715037A US2947813A (en) | 1957-06-27 | 1958-02-13 | Improvement in high speed telegraphic systems |
FR783006 | 1958-12-31 | ||
FR816212A FR77401E (en) | 1957-06-27 | 1960-01-19 | Fast telegraph device |
Publications (1)
Publication Number | Publication Date |
---|---|
FR77401E true FR77401E (en) | 1962-03-02 |
Family
ID=32398108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR816212A Expired FR77401E (en) | 1957-06-27 | 1960-01-19 | Fast telegraph device |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR77401E (en) |
-
1960
- 1960-01-19 FR FR816212A patent/FR77401E/en not_active Expired
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