FI790603A - Digitalt telekommunikationssystem - Google Patents
Digitalt telekommunikationssystemInfo
- Publication number
- FI790603A FI790603A FI790603A FI790603A FI790603A FI 790603 A FI790603 A FI 790603A FI 790603 A FI790603 A FI 790603A FI 790603 A FI790603 A FI 790603A FI 790603 A FI790603 A FI 790603A
- Authority
- FI
- Finland
- Prior art keywords
- digitalt
- telekommunikationssystem
- digitalt telekommunikationssystem
- 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
- H04L5/143—Two-way operation using the same type of signal, i.e. duplex for modulated signals
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Transceivers (AREA)
- Bidirectional Digital Transmission (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19782807785 DE2807785A1 (de) | 1978-02-23 | 1978-02-23 | Digitales nachrichtenuebertragungssystem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FI790603A true FI790603A (fi) | 1979-08-24 |
Family
ID=6032753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI790603A FI790603A (fi) | 1978-02-23 | 1979-02-22 | Digitalt telekommunikationssystem |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US4236244A (pt) |
| EP (1) | EP0003848A1 (pt) |
| JP (1) | JPS5513595A (pt) |
| AR (1) | AR218363A1 (pt) |
| AU (1) | AU517838B2 (pt) |
| BE (1) | BE873804A (pt) |
| BR (1) | BR7901158A (pt) |
| DE (1) | DE2807785A1 (pt) |
| DK (1) | DK77379A (pt) |
| FI (1) | FI790603A (pt) |
| GB (1) | GB2016871B (pt) |
| NO (1) | NO790596L (pt) |
| ZA (1) | ZA79892B (pt) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2916576C3 (de) * | 1979-04-24 | 1981-12-10 | Siemens AG, 1000 Berlin und 8000 München | Digital-Fernmeldesystem für Zweidraht-Getrenntlage-Betrieb |
| CA1159972A (en) * | 1980-05-15 | 1984-01-03 | Zdzistaw A. A. Krajewski | 2-wire frequency division multiplex system |
| DE3019835C2 (de) * | 1980-05-23 | 1983-12-01 | Siemens AG, 1000 Berlin und 8000 München | Übertragerfreie Gabelschaltung |
| JPS5860577A (ja) * | 1981-10-07 | 1983-04-11 | Hitachi Ltd | 半導体装置 |
| GB2146509B (en) * | 1983-09-10 | 1986-08-13 | Stc Plc | Data transmission system |
| DE3702202A1 (de) * | 1987-01-26 | 1988-08-04 | Dirr Josef | Verfahren fuer die uebertragung analoger und/oder digitaler information, insbesondere unter zwischenschaltung einer, 2er oder mehrerer vermittlungen in fernmeldeanlagen |
| DE19844457C1 (de) * | 1998-09-28 | 2000-07-06 | Siemens Ag | Verfahren zur Duplex-Datenübertragung mit QAM und Demodulator zur Verwendung in diesem Verfahren |
| CN103226025B (zh) * | 2012-12-17 | 2017-02-08 | 天津市北方阀门控制设备有限公司 | 一种两线制位置变送器电路 |
| US11133864B1 (en) * | 2020-04-24 | 2021-09-28 | Ciena Corporation | Measurement of crosstalk |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3655915A (en) * | 1970-05-07 | 1972-04-11 | Gen Datacomm Ind Inc | Closed loop test method and apparatus for duplex data transmission modem |
| DE2141198C3 (de) * | 1971-08-17 | 1978-03-30 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Verfahren zur Schleifenmessung bei Modem für Zweidrahtbetrieb |
| US3715496A (en) * | 1971-10-21 | 1973-02-06 | Ibm | Digital band-pass filter for a single circuit full duplex transmission system |
| US3846582A (en) * | 1973-08-06 | 1974-11-05 | Bell Telephone Labor Inc | Data transmission terminal for fsk frequency duplexed systems |
| US3937882A (en) * | 1974-04-11 | 1976-02-10 | Vadic Corporation | Full-duplex communication system on a two wire line |
| US3993867A (en) * | 1974-10-15 | 1976-11-23 | Motorola, Inc. | Digital single signal line full duplex method and apparatus |
| US3936602A (en) * | 1974-10-23 | 1976-02-03 | Northern Electric Company Limited | Full duplex data transmission system using two speeds of diphase signal for simplified sync |
| DE2543696C3 (de) * | 1975-09-30 | 1980-04-17 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Schaltungsanordnung zur Umsetzung von Digital-Signalen in Analog-Signale und zur Umsetzung von Analog-Signalen in Digital-Signale |
| US4041398A (en) * | 1976-06-03 | 1977-08-09 | Icc, Inc. | Bi-directional digital communication network |
-
1978
- 1978-02-23 DE DE19782807785 patent/DE2807785A1/de not_active Withdrawn
-
1979
- 1979-01-30 BE BE193155A patent/BE873804A/xx unknown
- 1979-02-22 BR BR7901158A patent/BR7901158A/pt unknown
- 1979-02-22 DK DK77379A patent/DK77379A/da unknown
- 1979-02-22 NO NO790596A patent/NO790596L/no unknown
- 1979-02-22 GB GB7906375A patent/GB2016871B/en not_active Expired
- 1979-02-22 JP JP1913779A patent/JPS5513595A/ja active Pending
- 1979-02-22 FI FI790603A patent/FI790603A/fi not_active Application Discontinuation
- 1979-02-22 AU AU44513/79A patent/AU517838B2/en not_active Ceased
- 1979-02-22 US US06/014,140 patent/US4236244A/en not_active Expired - Lifetime
- 1979-02-23 AR AR275612A patent/AR218363A1/es active
- 1979-02-23 EP EP79100558A patent/EP0003848A1/de not_active Ceased
- 1979-02-23 ZA ZA79892A patent/ZA79892B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU517838B2 (en) | 1981-08-27 |
| NO790596L (no) | 1979-08-24 |
| AU4451379A (en) | 1979-08-30 |
| DE2807785A1 (de) | 1979-08-30 |
| BE873804A (fr) | 1979-05-16 |
| JPS5513595A (en) | 1980-01-30 |
| EP0003848A1 (de) | 1979-09-05 |
| GB2016871A (en) | 1979-09-26 |
| AR218363A1 (es) | 1980-05-30 |
| GB2016871B (en) | 1982-04-15 |
| DK77379A (da) | 1979-08-24 |
| BR7901158A (pt) | 1979-10-09 |
| ZA79892B (en) | 1980-03-26 |
| US4236244A (en) | 1980-11-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FA | Application withdrawn |
Owner name: SIEMENS AKTIENGESELLSCHAFT |