Patent ID: 7738462

Claim:
A method of processing data in a controller area network (CAN), the method comprising: adding second data to first data in a CAN message to be transmitted; and transmitting information, in a data length code (DLC) of the CAN message, indicating that the second data has been added, wherein a value of bits of the DLC that indicates a length of the second data is greater than a value of bits of the DLC that indicates a length of the first data, wherein the second data includes one or more bytes having an identical value, a first bit of the second data has a value different from a last bit of the first data, first and last bits in each byte have different values, first and fifth bits in each byte have different values, and fourth and last bits in each byte have different values, wherein the information is included in a field indicating a length of data to be transmitted in the CAN message, wherein the information is indicated by a value within a reserved range of the field, and wherein the length of the first data corresponds to a value of lower bits that remain after a most significant bit (MSB) is subtracted from a value within the reserved range of the field.