CS159744B2 - - Google Patents
Info
- Publication number
- CS159744B2 CS159744B2 CS341768A CS341768A CS159744B2 CS 159744 B2 CS159744 B2 CS 159744B2 CS 341768 A CS341768 A CS 341768A CS 341768 A CS341768 A CS 341768A CS 159744 B2 CS159744 B2 CS 159744B2
- Authority
- CS
- Czechoslovakia
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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/24—Half-wave signalling systems
-
- 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
- H04L27/30—Systems using multi-frequency codes wherein each code element is represented by a combination of frequencies
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Communication Control (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES0109788 | 1967-05-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS159744B2 true CS159744B2 (en:Method) | 1975-01-31 |
Family
ID=7529778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS341768A CS159744B2 (en:Method) | 1967-05-09 | 1968-05-08 |
Country Status (8)
| Country | Link |
|---|---|
| AT (1) | AT295607B (en:Method) |
| BE (1) | BE714898A (en:Method) |
| CH (1) | CH473514A (en:Method) |
| CS (1) | CS159744B2 (en:Method) |
| DE (1) | DE1287623B (en:Method) |
| FR (1) | FR1594554A (en:Method) |
| NL (1) | NL6806394A (en:Method) |
| SE (1) | SE339493B (en:Method) |
-
0
- DE DES109788A patent/DE1287623B/de not_active Withdrawn
-
1968
- 1968-03-29 CH CH472568A patent/CH473514A/de not_active IP Right Cessation
- 1968-04-02 AT AT320468A patent/AT295607B/de not_active IP Right Cessation
- 1968-05-06 NL NL6806394A patent/NL6806394A/xx unknown
- 1968-05-08 FR FR1594554D patent/FR1594554A/fr not_active Expired
- 1968-05-08 CS CS341768A patent/CS159744B2/cs unknown
- 1968-05-09 SE SE627968A patent/SE339493B/xx unknown
- 1968-05-09 BE BE714898A patent/BE714898A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SE339493B (en:Method) | 1971-10-11 |
| DE1287623B (en:Method) | 1969-01-23 |
| FR1594554A (en:Method) | 1970-06-08 |
| NL6806394A (en:Method) | 1968-11-11 |
| AT295607B (de) | 1972-01-10 |
| CH473514A (de) | 1969-05-31 |
| BE714898A (en:Method) | 1968-11-12 |