NL173341C - Duplex informatieoverdrachtsmodem. - Google Patents
Duplex informatieoverdrachtsmodem.Info
- Publication number
- NL173341C NL173341C NLAANVRAGE7802400,A NL7802400A NL173341C NL 173341 C NL173341 C NL 173341C NL 7802400 A NL7802400 A NL 7802400A NL 173341 C NL173341 C NL 173341C
- Authority
- NL
- Netherlands
- Prior art keywords
- information transfer
- duplex information
- transfer modem
- modem
- duplex
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephonic Communication Services (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Bidirectional Digital Transmission (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/775,104 US4101833A (en) | 1977-03-07 | 1977-03-07 | Duplex data transmission modem utilizing an injected tone for shifting power within the transmit spectrum |
Publications (2)
Publication Number | Publication Date |
---|---|
NL7802400A NL7802400A (nl) | 1978-09-11 |
NL173341C true NL173341C (nl) | 1984-01-02 |
Family
ID=25103344
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NLAANVRAGE7802400,A NL173341C (nl) | 1977-03-07 | 1978-03-03 | Duplex informatieoverdrachtsmodem. |
Country Status (9)
Country | Link |
---|---|
US (1) | US4101833A (nl) |
JP (1) | JPS53130909A (nl) |
BE (1) | BE864615A (nl) |
CA (1) | CA1094643A (nl) |
DE (1) | DE2809401B2 (nl) |
DK (1) | DK98878A (nl) |
GB (1) | GB1593464A (nl) |
LU (1) | LU79183A1 (nl) |
NL (1) | NL173341C (nl) |
Families Citing this family (13)
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 |
US4417349A (en) * | 1979-11-08 | 1983-11-22 | Digital Broadcasting Corporation | SCA Data transmission system with a raised cosine filter |
US4355397A (en) * | 1980-10-15 | 1982-10-19 | Rixon, Inc. | Full duplex communication system for voice grade channels |
US4509164A (en) * | 1981-11-30 | 1985-04-02 | Queen's University At Kingston | Microprocessor based digital to digital converting dataset |
US4481622A (en) * | 1982-04-01 | 1984-11-06 | Anderson Jacobson, Inc. | High speed dial-up telephone circuit full duplex data transmission techniques |
US4597073A (en) * | 1985-08-27 | 1986-06-24 | Data Race, Inc. | Full-duplex split-speed data communication unit for remote DTE |
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 |
JPH02127829A (ja) * | 1988-11-08 | 1990-05-16 | Fujitsu Ltd | 双方向光伝送装置の光断検出回路 |
US5577026A (en) * | 1993-12-28 | 1996-11-19 | Analogic Corporation | Apparatus for transferring data to and from a moving device |
WO1995031061A1 (en) * | 1994-05-05 | 1995-11-16 | Catapult Entertainment, Inc. | Network architecture for real-time video games |
US5636209A (en) * | 1994-05-05 | 1997-06-03 | Perlman; Stephen G. | Modem to support multiple site call conferenced data communications |
US6134590A (en) * | 1996-04-16 | 2000-10-17 | Webtv Networks, Inc. | Method and apparatus for automatically connecting devices to a local network |
US20050089326A1 (en) * | 2003-10-03 | 2005-04-28 | Zvi Regev | Cancellation of transmitted signal crosstalk in optical receivers of diplexer-based fiber optic transceivers |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3306984A (en) * | 1963-12-16 | 1967-02-28 | Bell Telephone Labor Inc | Elimination of talk-off in in-band signaling systems |
US3349191A (en) * | 1965-01-07 | 1967-10-24 | Bell Telephone Labor Inc | Talk-off protection for in-band telephone signaling systems |
GB1161003A (en) * | 1966-12-22 | 1969-08-13 | Ass Elect Ind | Improvements relating to Data Transmission Systems |
US3655915A (en) * | 1970-05-07 | 1972-04-11 | Gen Datacomm Ind Inc | Closed loop test method and apparatus for duplex data transmission modem |
US3937882A (en) * | 1974-04-11 | 1976-02-10 | Vadic Corporation | Full-duplex communication system on a two wire line |
US3934088A (en) * | 1974-06-13 | 1976-01-20 | Redactron Corporation | Data terminal for connection to telephone or teleprinter facilities |
US4018996A (en) * | 1976-02-13 | 1977-04-19 | Kahn Leonard R | Communication network protection system |
-
1977
- 1977-03-07 US US05/775,104 patent/US4101833A/en not_active Expired - Lifetime
-
1978
- 1978-03-03 GB GB8568/78A patent/GB1593464A/en not_active Expired
- 1978-03-03 NL NLAANVRAGE7802400,A patent/NL173341C/nl not_active IP Right Cessation
- 1978-03-04 DE DE2809401A patent/DE2809401B2/de not_active Ceased
- 1978-03-06 CA CA298,280A patent/CA1094643A/en not_active Expired
- 1978-03-06 DK DK98878A patent/DK98878A/da not_active Application Discontinuation
- 1978-03-07 BE BE2056738A patent/BE864615A/nl not_active IP Right Cessation
- 1978-03-07 LU LU79183A patent/LU79183A1/xx unknown
- 1978-03-07 JP JP2589278A patent/JPS53130909A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
DK98878A (da) | 1978-09-08 |
JPS53130909A (en) | 1978-11-15 |
LU79183A1 (fr) | 1978-06-26 |
NL7802400A (nl) | 1978-09-11 |
DE2809401B2 (de) | 1979-09-20 |
BE864615A (nl) | 1978-07-03 |
JPS5650464B2 (nl) | 1981-11-28 |
CA1094643A (en) | 1981-01-27 |
GB1593464A (en) | 1981-07-15 |
DE2809401A1 (de) | 1978-09-14 |
US4101833A (en) | 1978-07-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BB | A search report has been drawn up | ||
BC | A request for examination has been filed | ||
SNR | Assignments of patents or rights arising from examined patent applications |
Owner name: RACAL DATA COMMUNICATIONS, INC. |
|
V4 | Discontinued because of reaching the maximum lifetime of a patent |
Free format text: 980303 |