FR803830A - Device for overlay telegraphy - Google Patents
Device for overlay telegraphyInfo
- Publication number
- FR803830A FR803830A FR803830DA FR803830A FR 803830 A FR803830 A FR 803830A FR 803830D A FR803830D A FR 803830DA FR 803830 A FR803830 A FR 803830A
- Authority
- FR
- France
- Prior art keywords
- telegraphy
- overlay
- overlay telegraphy
- 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
- 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
-
- 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
- H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA75745D DE685363C (en) | 1935-04-06 | 1935-04-06 | Device for subordinate telegraphy with isolating transmitters from the telephone and telegraph connections, with a direct current being sampled in the telegraph transmission circuit via a capacitor and an upstream resistor |
Publications (1)
Publication Number | Publication Date |
---|---|
FR803830A true FR803830A (en) | 1936-10-09 |
Family
ID=41356265
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR803830D Expired FR803830A (en) | 1935-04-06 | 1936-03-27 | Device for overlay telegraphy |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE685363C (en) |
FR (1) | FR803830A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE896372C (en) * | 1940-11-10 | 1953-11-12 | Siemens Ag | Circuit arrangement for the transmission of control currents over lines sealed off by transmitters |
-
1935
- 1935-04-06 DE DEA75745D patent/DE685363C/en not_active Expired
-
1936
- 1936-03-27 FR FR803830D patent/FR803830A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE685363C (en) | 1939-12-16 |
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