H - Electricity – 04 – Q
Patent
H - Electricity
04
Q
344/28
H04Q 3/42 (2006.01) H04L 12/42 (2006.01)
Patent
CA 2006143
A concentrator for a local area network with loop topology comprises a connector to which a first workstation is connected, a relay contact for switching one side in which second and third workstations positioned at both sides of the first workstation are connected to each other, or the other side in which the first workstation is connected via the connector between the second and the third workstations, an activation member for activating the relay contact, a pair of condensers for charging a direct current from the first workstation when the first workstation is connected, and operating the activation member by discharging the direct current, and a controller for controlling the discharging of one of the pair of condensers by detecting the changes in connection conditions of the first workstation.
Ishihara Hiroshi
Nishikawa Toshiyuki
G. Ronald Bell & Associates
Mitsubishi Cable Industries Ltd.
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