Patent ID: 9294590
Filing Date: 2016-03-22
CPC Classification: H04L

Claim Text:
1. A frame conversion apparatus for converting a Controller Area Network (CAN) frame into an Ethernet frame, the apparatus comprising: a hardware computing device, and a non-transitory storage medium containing program instructions stored thereon, execution of which by the hardware computing device causes the frame conversion apparatus to provide functions of: a CAN frame receiving unit configured to receive CAN frames from a CAN network domain; a CAN frame analysis unit configured to analyze the CAN frames received by the CAN frame receiving unit, and extract data to be transmitted; an Ethernet frame generating unit configured to generate an Ethernet frame including an identifier, a first frame region which is selective and includes information about a length of data transmitted, and a plurality of second frame regions which selectively include information about a data segment assembly sequence, as a data field, wherein the data extracted by the CAN frame analysis unit to be transmitted is disassembled into segments of data in units of a certain number of bytes and the disassembled segments of data are arranged by distribution to the first frame region and the second frame regions; and an Ethernet frame transmitting unit configured to transmit the Ethernet frame generated by the Ethernet frame generating unit to an Ethernet network domain, wherein the Ethernet frame generating unit, in a case in which all of the second frame regions cannot be transmitted in a single Ethernet frame and are transmitted in a plurality of Ethernet frames, includes only the identifier and the second frame regions, not the first frame region, in a second and following Ethernet frames, and includes the information about the data segment assembly sequence in each preceding second frame region among second frame regions included in the second and following Ethernet frames.