ZA755746B - Improvements in or relating to two-wire full-duplex data transmission systems - Google Patents
Improvements in or relating to two-wire full-duplex data transmission systemsInfo
- Publication number
- ZA755746B ZA755746B ZA00755746A ZA755746A ZA755746B ZA 755746 B ZA755746 B ZA 755746B ZA 00755746 A ZA00755746 A ZA 00755746A ZA 755746 A ZA755746 A ZA 755746A ZA 755746 B ZA755746 B ZA 755746B
- Authority
- ZA
- South Africa
- Prior art keywords
- relating
- data transmission
- transmission systems
- duplex data
- wire full
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1423—Two-way operation using the same type of signal, i.e. duplex for simultaneous baseband signals
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Logic Circuits (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2454108A DE2454108C2 (de) | 1974-11-14 | 1974-11-14 | Schaltungsanordnung zum Abgleich eines Zweidraht-Vollduplex-Datenübertragungssystems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA755746B true ZA755746B (en) | 1976-08-25 |
Family
ID=5930857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA00755746A ZA755746B (en) | 1974-11-14 | 1975-09-09 | Improvements in or relating to two-wire full-duplex data transmission systems |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US4052556A (fr) |
| AT (1) | AT346397B (fr) |
| BE (1) | BE835602A (fr) |
| BR (1) | BR7507506A (fr) |
| CH (1) | CH594326A5 (fr) |
| DE (1) | DE2454108C2 (fr) |
| DK (1) | DK146839C (fr) |
| FR (1) | FR2291655A1 (fr) |
| IT (1) | IT1048835B (fr) |
| NL (1) | NL7513136A (fr) |
| SE (1) | SE402039B (fr) |
| ZA (1) | ZA755746B (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2619712B2 (de) * | 1976-05-04 | 1978-07-13 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Schaltungsanordnung zum automatischen Abgleich eines Zweidraht-VoIlduplex-Datenübertragungssystems |
| US4476557A (en) * | 1982-08-13 | 1984-10-09 | At&T Bell Laboratories | Duplex signaling circuit |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB457776A (en) * | 1934-06-02 | 1936-12-04 | Italo De Giuli | Improvements in or relating to the electrical transmission of telegraphic, telephonic or other signals |
| US2341902A (en) * | 1941-08-12 | 1944-02-15 | Western Union Telegraph Co | Electronic telegraph repeater |
| US3573371A (en) * | 1968-12-23 | 1971-04-06 | Bell Telephone Labor Inc | Direct-current data set arranged for polar signaling and full duplex operation |
| US3652952A (en) * | 1970-05-19 | 1972-03-28 | Bell Telephone Labor Inc | Electronically variable line build-out network |
| DE2045654B2 (de) * | 1970-09-16 | 1973-02-01 | Schaltungsanordnung zur vollduplexuebertragung von niederpegelgleichstrom-datensignalen auf einer zweidrahtleitung | |
| US3715496A (en) * | 1971-10-21 | 1973-02-06 | Ibm | Digital band-pass filter for a single circuit full duplex transmission system |
-
1974
- 1974-11-14 DE DE2454108A patent/DE2454108C2/de not_active Expired
-
1975
- 1975-09-09 ZA ZA00755746A patent/ZA755746B/xx unknown
- 1975-10-06 AT AT762375A patent/AT346397B/de not_active IP Right Cessation
- 1975-10-28 US US05/625,869 patent/US4052556A/en not_active Expired - Lifetime
- 1975-11-05 CH CH1427475A patent/CH594326A5/xx not_active IP Right Cessation
- 1975-11-07 IT IT29068/75A patent/IT1048835B/it active
- 1975-11-10 NL NL7513136A patent/NL7513136A/xx not_active Application Discontinuation
- 1975-11-13 SE SE7512747A patent/SE402039B/xx unknown
- 1975-11-13 DK DK512175A patent/DK146839C/da not_active IP Right Cessation
- 1975-11-13 BR BR7507506*A patent/BR7507506A/pt unknown
- 1975-11-13 FR FR7534690A patent/FR2291655A1/fr active Granted
- 1975-11-14 BE BE161898A patent/BE835602A/fr unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH594326A5 (fr) | 1978-01-13 |
| FR2291655A1 (fr) | 1976-06-11 |
| BR7507506A (pt) | 1976-08-03 |
| BE835602A (fr) | 1976-05-14 |
| DK512175A (da) | 1976-05-15 |
| IT1048835B (it) | 1980-12-20 |
| DE2454108B1 (de) | 1976-05-13 |
| DK146839B (da) | 1984-01-16 |
| ATA762375A (de) | 1978-03-15 |
| DE2454108C2 (de) | 1981-04-09 |
| SE7512747L (sv) | 1976-05-17 |
| AT346397B (de) | 1978-11-10 |
| US4052556A (en) | 1977-10-04 |
| SE402039B (sv) | 1978-06-12 |
| DK146839C (da) | 1984-06-25 |
| NL7513136A (nl) | 1976-05-18 |
| FR2291655B1 (fr) | 1982-10-29 |
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