CA1243787A - Variable bandwidth switching system - Google Patents
Variable bandwidth switching systemInfo
- Publication number
- CA1243787A CA1243787A CA000453459A CA453459A CA1243787A CA 1243787 A CA1243787 A CA 1243787A CA 000453459 A CA000453459 A CA 000453459A CA 453459 A CA453459 A CA 453459A CA 1243787 A CA1243787 A CA 1243787A
- Authority
- CA
- Canada
- Prior art keywords
- data
- information
- network
- highway
- node
- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/22—Arrangements affording multiple use of the transmission path using time-division multiplexing
- H04L5/24—Arrangements affording multiple use of the transmission path using time-division multiplexing with start-stop synchronous converters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
- H04L25/4904—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using self-synchronising codes, e.g. split-phase codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/02—Arrangements for interconnection not involving centralised switching involving a common line for all parties
- H04M9/022—Multiplex systems
- H04M9/025—Time division multiplex systems, e.g. loop systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13332—Broadband, CATV, dynamic bandwidth allocation
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Time-Division Multiplex Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Liquid Crystal Substances (AREA)
- Mobile Radio Communication Systems (AREA)
- Optical Communication System (AREA)
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/491,551 US4587651A (en) | 1983-05-04 | 1983-05-04 | Distributed variable bandwidth switch for voice, data, and image communications |
US491,551 | 1983-05-04 | ||
US06/582,182 US4755988A (en) | 1983-05-04 | 1984-02-21 | Data communications switching device having multiple switches operating at plural selectable data rates |
US582,182 | 1984-02-21 | ||
US06/582,069 US4598397A (en) | 1984-02-21 | 1984-02-21 | Microtelephone controller |
US582,069 | 1996-01-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1243787A true CA1243787A (en) | 1988-10-25 |
Family
ID=27413904
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000453459A Expired CA1243787A (en) | 1983-05-04 | 1984-05-03 | Variable bandwidth switching system |
CA000453460A Expired CA1242819A (en) | 1983-05-04 | 1984-05-03 | Integrated voice/data/control switching system |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000453460A Expired CA1242819A (en) | 1983-05-04 | 1984-05-03 | Integrated voice/data/control switching system |
Country Status (5)
Country | Link |
---|---|
EP (2) | EP0141852A4 (es) |
AU (2) | AU571236B2 (es) |
CA (2) | CA1243787A (es) |
ES (2) | ES532231A0 (es) |
WO (1) | WO1984004435A1 (es) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8504810D0 (en) * | 1985-02-25 | 1985-03-27 | Gen Electric Co Plc | Local communication system |
DE3572103D1 (en) * | 1985-02-28 | 1989-09-07 | Ibm | Communication system comprising overlayed multiple-access transmission networks |
GB8515347D0 (en) * | 1985-06-18 | 1985-07-17 | Plessey Co Plc | Telecommunications exchanges |
GB2232326A (en) * | 1989-05-26 | 1990-12-05 | Philips Electronic Associated | Data transmission over a tdm duplex frequency channel |
US5164960A (en) * | 1990-02-15 | 1992-11-17 | Advanced Micro Devices Inc. | Medium attachment unit for use with twisted pair local area network |
DE4134360C1 (es) * | 1991-10-17 | 1993-04-15 | Ant Nachrichtentechnik Gmbh, 7150 Backnang, De | |
JP3664050B2 (ja) * | 2000-06-28 | 2005-06-22 | 日本電気株式会社 | 接続復旧装置 |
US7675867B1 (en) * | 2006-04-19 | 2010-03-09 | Owl Computing Technologies, Inc. | One-way data transfer system with built-in data verification mechanism |
GB2495018B (en) | 2010-07-19 | 2017-02-22 | Owl Computing Tech Inc | Secure acknowledgment device for one-way data transfer system |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4251865A (en) * | 1978-12-08 | 1981-02-17 | Motorola, Inc. | Polling system for a duplex communications link |
US4271507A (en) * | 1979-06-07 | 1981-06-02 | Ford Motor Company | Communication broadcast channel interface |
US4445213A (en) * | 1979-07-31 | 1984-04-24 | Bell Telephone Laboratories, Incorporated | Communication line interface for controlling data information having differing transmission characteristics |
US4251880A (en) * | 1979-07-31 | 1981-02-17 | Bell Telephone Laboratories, Incorporated | Digital loop switch for controlling data information having differing transmission characteristics |
NL8104368A (nl) * | 1981-09-23 | 1983-04-18 | Philips Nv | Digitale telefooncentrale met voorzieningen voor het behandelen van pakketgeschakelde data. |
US4445116A (en) * | 1982-03-05 | 1984-04-24 | Burroughs Corporation | Method for allocating bandwidth between stations in a local area network |
-
1984
- 1984-05-02 AU AU29633/84A patent/AU571236B2/en not_active Ceased
- 1984-05-02 EP EP19840902139 patent/EP0141852A4/en not_active Withdrawn
- 1984-05-02 WO PCT/US1984/000676 patent/WO1984004435A1/en not_active Application Discontinuation
- 1984-05-02 EP EP19840902140 patent/EP0142551A4/en not_active Withdrawn
- 1984-05-02 AU AU29655/84A patent/AU570983B2/en not_active Ceased
- 1984-05-03 CA CA000453459A patent/CA1243787A/en not_active Expired
- 1984-05-03 CA CA000453460A patent/CA1242819A/en not_active Expired
- 1984-05-04 ES ES532231A patent/ES532231A0/es active Granted
- 1984-05-04 ES ES532232A patent/ES8604707A1/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
AU2963384A (en) | 1984-11-19 |
AU570983B2 (en) | 1988-03-31 |
EP0142551A4 (en) | 1988-06-16 |
ES8604707A1 (es) | 1986-02-01 |
CA1242819A (en) | 1988-10-04 |
ES8503184A1 (es) | 1985-02-01 |
WO1984004435A1 (en) | 1984-11-08 |
ES532232A0 (es) | 1986-02-01 |
AU2965584A (en) | 1984-11-19 |
EP0142551A1 (en) | 1985-05-29 |
EP0141852A1 (en) | 1985-05-22 |
EP0141852A4 (en) | 1988-06-16 |
AU571236B2 (en) | 1988-04-14 |
ES532231A0 (es) | 1985-02-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKEX | Expiry |