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AssigneeRenesas Technology Corp.
InventorsHiroshi Arita, Yasuhiro Nakatsuka, Kotaro Shimamura, Yasuwo Watanabe
Estimating the term…
A packet communication apparatus, which includes a CPU, a memory, and a packet communication circuit, acts as an interface between a network-connected controlled object and a network terminal that remotely monitors and controls the controlled object, and transmits and receives a packet between the controlled object and the network terminal, further includes a copy and operation unit that is a hardware unit for executing the checksum calculation to check for a packet error and the copy operation. The copy and operation unit performs the packet data copy operation and the checksum calculation simultaneously between a sending buffer/receiving buffer, formed in the memory and used by the packet communication circuit, and a work area used by a communication processing program, thus reducing the load of the CPU and increasing the communication processing speed.
A packet communication apparatus comprising a CPU (Central Processing Unit), a memory, and a packet communication circuit, said packet communication apparatus acting as an interface between at least one network-connected controlled object and at least one network terminal that remotely monitors and controls the controlled object, said packet communication apparatus transmitting and receiving a packet between the controlled object and the network terminal,
2-17. (canceled)
Dependencies are inferred from the claim text.