Patent ID: 7826479

Claim:
A communication message conversion device, comprising: a first receiving unit receiving a plurality of first messages according to a first communication protocol; a first message storage unit storing each of the plurality of first messages received by the first receiving unit in one of a plurality of buffer areas according to a first message identifier contained in each of the plurality of first messages; a plurality of first identifier conversion tables, each of the plurality of first identifier conversion tables including identification translation information and each of the plurality of first identifier conversion tables being provided to each of the plurality of buffer areas; a first identifier conversion unit converting the first message identifier in each of the plurality of first messages into a second message identifier based on one of the plurality of first conversion tables associated with one of the plurality of buffer areas storing the first message; a first message conversion table for associating a second message with a plurality of first message identifiers; a first message conversion unit packing the plurality of first messages including the second message identifier associated with the first message conversion table into the second message; and a first transmission unit transmitting the second message converted with the first message conversion unit according to a second communication protocol, wherein each of the plurality of first messages are received with the first message identifier included therein, and wherein the first message storage unit stores the received first message in one of a plurality of buffer areas when the first message identifier is of a predetermined value, and the first identifier conversion table contains the second message identifier of a number corresponding to the predetermined value.