Local area network accessory for integrating usb...

H - Electricity – 04 – L

Patent

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Details

H04L 12/12 (2006.01) G06F 13/40 (2006.01) H04L 12/44 (2006.01) H04L 12/46 (2006.01) H04L 12/56 (2006.01) H04L 29/06 (2006.01) H04L 29/08 (2006.01)

Patent

CA 2390606

The invention relates to local area networks including Ethernet networks which typically comprises a LAN hub (10), a plurality of outer hub devices (80, 110, 140, 160, 240) connected to the LAN hub via a respective plurality of LAN links (90) (passing through an Ethernet hub) and a plurality of USB devices (180) and/or LAN computers (260) connected to the plurality of outer hub devices via a respective plurality of USB links (84). The outer hub devices communicate with the USB devices and LAN computers using the USB protocol that has time sensitive aspects. To satisfy the requirements of the USB protocol, the outer hub devices perform the time sensitive aspects of the USB protocol. The outer hubs communicate with the LAN hub using an Ethernet protocol that permits the outer hub device to be further than 5 meters from the LAN hub. The Ethernet protocol is typically a variant of the USB protocol.

L'invention se rapporte à des réseaux locaux (LAN) et notamment des réseaux Ethernet qui généralement comportent un concentrateur LAN (10), une pluralité de dispositifs concentrateurs externes (80, 110, 140, 160, 240) reliés au concentrateur LAN par l'intermédiaire d'une pluralité respective de liaisons LAN (90) (passant par le concentrateur Ethernet) et une pluralité de dispositifs USB (180) et/ou des ordinateurs LAN (260) reliés à la pluralité de dispositifs concentrateurs externes par l'intermédiaire d'une pluralité respective de liaisons USB (84). Les dispositifs concentrateurs externes communiquent avec les dispositifs USB et les ordinateurs LAN à l'aide du protocole USB qui présente des aspects temporels critiques. Pour répondre aux exigences du protocole USB, les dispositifs concentrateurs externes prennent en charge les aspects temporels critiques du protocole USB. Les concentrateurs extérieurs communiquent avec le concentrateur LAN au moyen d'un protocole Ethernet qui permet au dispositif concentrateur extérieur d'être éloigné de plus de cinq mètres du concentrateur LAN. Le protocole Ethernet est généralement une variante du protocole USB.

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