FR976792A - Electronic device for simultaneous telephony and telegraphy - Google Patents
Electronic device for simultaneous telephony and telegraphyInfo
- Publication number
- FR976792A FR976792A FR976792DA FR976792A FR 976792 A FR976792 A FR 976792A FR 976792D A FR976792D A FR 976792DA FR 976792 A FR976792 A FR 976792A
- Authority
- FR
- France
- Prior art keywords
- telegraphy
- electronic device
- simultaneous telephony
- telephony
- simultaneous
- 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
- H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR976792T | 1948-10-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR976792A true FR976792A (en) | 1951-03-22 |
Family
ID=9519109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR976792D Expired FR976792A (en) | 1948-10-19 | 1948-10-19 | Electronic device for simultaneous telephony and telegraphy |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR976792A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3226480A (en) * | 1960-01-21 | 1965-12-28 | Int Standard Electric Corp | Duplex data transmission system utilizing a telephone channel |
-
1948
- 1948-10-19 FR FR976792D patent/FR976792A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3226480A (en) * | 1960-01-21 | 1965-12-28 | Int Standard Electric Corp | Duplex data transmission system utilizing a telephone channel |
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