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OwnerMitsuhiro Nishida, Chiaki Tahara +8inventors
InventorsMitsuhiro Nishida, Chiaki Tahara, Kousuke Nakamura, Yumiko Shigeoka, Koki Kurokawa, Hironori Kadota, Seiji Miyata, Keiichi Furukawa, Akihisa Kawaguchi, Takatsugu Kurokawa
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A packet communications method whereby reliable and high-speed communication is possible without depending on the processing of other layers, and also whereby the system configuration can be flexibly changed without making circuit changes to the receiving unit. A device on the sending side adds a packet identifier to the packet and sends this packet along with a packet identical to this packet to a device on the receiving side. The device on the receiving side receives the packets sent from the device on the sending side, checks the packets for errors and, based on the packet identifier, determines whether or not the error-free packets have arrived first. If the packet arrived first, the packet with the packet identifier removed is subject to sending to a terminal, but if it arrived last, the packet is not subject to sending to the terminal, so only error-free packets are subject to the determination of whether it arrived first or not, and thus the determination can be performed accurately.
A packet communications method whereby a plurality of devices that connect terminals are connected in a ring shape, and the communication of data among said devices thus connected is performed via a plurality of transmission paths, thereby implementing packet communications among said terminals, said method comprising the steps of:
A packet communications system whereby a plurality of devices that connect terminals are connected in a ring shape, and the communication of data among said devices thus connected is performed via a plurality of transmission paths, thereby implementing packet communications among said terminals,
12 A receiving-side device in a packet communications system whereby a plurality of devices that connect terminals are connected in a ring shape, and the communication of data among said devices thus connected is performed via a plurality of transmission paths, thereby implementing packet communications among said terminals, said receiving-side device comprising:
The receiving-side device of claim 12, wherein said sending-side device adds to each packet a different node identifier for each node and information that indicates the order of sending of packets as a packet identifier, and sends packets that are identical to said packet to said receiving-side device via said plurality of transmission paths.
A sending-side device in packet communications system whereby a plurality of devices that connect terminals are connected in a ring shape, and the communication of data among said devices thus connected is performed via a plurality of transmission paths, thereby implementing packet communications among said terminals, said sending-side device comprising:
Dependencies are inferred from the claim text.