To quickly and efficiently collect data from plural nodes being the objects of data collection.
When collecting data from nodes S1 and S3, a node M initializes OFFSET of a packet into 0, and transmits the packet to node S1 (Fig 1). The node S1 adds data (DATA (S1)) to the received packet, and operates update according to the data to which OFFSET is added ('L' in a figure), and then transmits the packet to a node S2 (Fig 2). The node S which is not the object of data collection transmits the received packet to a node S3 as it is (Fig 3), and the node S3 adds data (DATA (S3)) to the received packet, and operates update according to the data to which OFFSET is added ('2L' in a figure), and then transmits the packet to a node S4 (Fig 4). The packet is received through a node S4 by a node M so that the collection of data can be completed.
KUROISHI NORIHIKO
MIYAGAWA NOBUAKI
KOYANAGI MITSUMASA
KOYANAGI MITSUMASA
Next Patent: MULTI-PROCESSOR SYSTEM