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Title:
TRANSMISSION LINE SYSTEM, FRAME TRANSMISSION METHOD, AND FRAME TRANSMITTER
Document Type and Number:
Japanese Patent JP2009060419
Kind Code:
A
Abstract:

To provide a transmission line system, a frame transmission method and a frame transmitter, for preventing a plurality of master modes from existing in a ring in a ring-type network.

A master node transmits a second control frame for controlling a network periodically and monitors whether other blocking nodes exist in a transmission line. The master node receives the second control frame from other blocking nodes and executes the reconfiguration of the network for preventing the transmission line from being divided, when detecting the presence of the plurality of blocking nodes.


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Inventors:
MASUKO HIDEAKI
NAKANO YOSHIHIRO
NISHIMURA TAKAMASA
FUJIMATA YOSHIMI
ADACHI HIRONORI
SEKIMURA JUNICHI
KURIHARA HIROAKI
Application Number:
JP2007226489A
Publication Date:
March 19, 2009
Filing Date:
August 31, 2007
Export Citation:
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Assignee:
HITACHI LTD
HITACHI INF & CONTROL SYST
International Classes:
H04L12/437
Domestic Patent References:
JP2007129606A2007-05-24
JP2003218894A2003-07-31
JP2003018172A2003-01-17
Attorney, Agent or Firm:
Isono Dozo
Etsuo Tada



 
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