DATA TRANSMISSION METHOD, SYSTEM, AND APPARATUS

Japanese Patent JP3783960

B2

PROBLEM TO BE SOLVED: To provide a data transmission method, data transmission system, and data transmission apparatus, in which power consumption of the entire system is reduced when operating only partial connection apparatuses connected to the data transmission system.
SOLUTION: In a physical layer of each data transmission apparatus 1, a physical layer initialization process is performed in response to a reset exit process performed by their respective CPUs 4. Then, in link layers of data transmission apparatuses 1 which operate in master and normal modes, after the completion of a physical layer initialization process, a link layer initialization process is performed in response to a reset exit process performed by their respective CPUs 4, and then the data transmission apparatuses 1 start data communication using their respective physical layers and link layers. On the other hand, a link layer of a data transmission apparatus 1 which operates in a bypass mode maintains its reset state, and the data transmission apparatus 1 transmits data using only its own physical layer by bypassing its own link layer.

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Umei Toshitomo
Noboru Katsuta
Yuji Mizuguchi
Takashi Akita

JP2004033706A

June 07, 2006

February 10, 2004

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Matsushita Electric Industrial Co., Ltd

H04L12/28; H04L29/06; H04L12/42; H04L29/10; (IPC1-7): H04L29/06; H04L12/28; H04L29/10

JP2000092020A
JP2002171270A
JP6209326A
JP9008836A

Shiro Ogasawara

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