Method of processing abnormal situation in digital transmission system

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4737957
SERIAL NO

06834820

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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In a digital transmission system wherein a plurality of transmission control units each of which has received data error detecting means, data storing means, receiving means and transmitting means are successively connected by a transmission medium, the transmission control unit is operated in a through mode in which received data is directely forwarded under a normal state, and when an error has been detected in received data, the operation mode of the transmission control unit is switched to a store-and-forward mode in which a group of received data are first stored and are thereafter forwarded only in the case of the absence of an error. When normal data have been continuously received in a predetermined number of times in the operation in the store-and forward mode, the operation mode of the transmission control unit is switched to the through mode.

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Patent Owner(s)

  • HITACHI, LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Miyamoto, Shoji Kawasaki, JP 44 765
Mori, Kinji Yokohama, JP 73 1932
Nohmi, Makoto Kawasaki, JP 28 673

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