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Patentes

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Número de publicaciónWO1990015492 A3
Tipo de publicaciónSolicitud
Número de solicitudPCT/GB1990/000886
Fecha de publicación23 Jul 1992
Fecha de presentación7 Jun 1990
Fecha de prioridad7 Jun 1989
También publicado comoCA2058951A1, EP0475989A1, WO1990015492A2
Número de publicaciónPCT/1990/886, PCT/GB/1990/000886, PCT/GB/1990/00886, PCT/GB/90/000886, PCT/GB/90/00886, PCT/GB1990/000886, PCT/GB1990/00886, PCT/GB1990000886, PCT/GB199000886, PCT/GB90/000886, PCT/GB90/00886, PCT/GB90000886, PCT/GB9000886, WO 1990/015492 A3, WO 1990015492 A3, WO 1990015492A3, WO 9015492 A3, WO 9015492A3, WO-A3-1990015492, WO-A3-9015492, WO1990/015492A3, WO1990015492 A3, WO1990015492A3, WO9015492 A3, WO9015492A3
InventoresJohn Hill Boal
SolicitanteRacal Milgo Ltd
Exportar citaBiBTeX, EndNote, RefMan
Enlaces externos:  Patentscope, Espacenet
Star-wired ring lan
WO 1990015492 A3
Resumen
A hybrid star LAN has an access unit (1) with a port (30) associated with each terminal (2), the port comprising a port input (8) and output (9). A terminal link (3S, 3R) links the terminal to the port. A bypass link (11) is in parallel with the terminal link, and the time delays of the terminal link and the bypass link are matched by appropriate registers (11, 13). A comparator (14) compares the outputs of the terminal and bypass links to detect errors through the terminal link and controls a selector switch (12). On the LAN, channels are constituted by varying numbers of TDM slots, as defined by a template stored in the access unit. Each terminal stores that part of the template which defines channels which it can use. Each terminal can also store a second or background template which can be swapped in for the current or foreground template when a change of allocation is desired.
Citas de patentes
Patente citada Fecha de presentación Fecha de publicación Solicitante Título
DE3304823A1 *11 Feb 198316 Ago 1984Siemens AgVerfahren fuer eine fernmelde-, insbesondere fernsprechnebenstellenanlage mit einem datenuebertragungsleitungssystem, insbesondere mit einem optischen datenuebertragungsleitungssystem
EP0068595A1 *12 Ene 19825 Ene 1983General Datacomm Industries, Inc.A bit-interleaved time division multiplexer
US3985962 *12 Ago 197412 Oct 1976International Business Machines CorporationMethod of information transmission with priority scheme in a time-division multiplex communication system comprising a loop line
US4279034 *15 Nov 197914 Jul 1981Bell Telephone Laboratories, IncorporatedDigital communication system fault isolation circuit
US4779261 *17 Sep 198618 Oct 1988Kabushiki Kaisha ToshibaLoop network
Otras citas
Referencia
1 *IBM Technical Disclosure Bulletin, volume 14, no. 2, July 1971, (New York, US), E.N. Barnes et al.: "Bypass function for stations on a closed communication loop", page 488
Clasificaciones
Clasificación internacionalH04L12/437, H04L12/43
Clasificación cooperativaH04L12/437, H04L12/43
Clasificación europeaH04L12/437, H04L12/43
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