Transmission apparatus, method and computer program product

摘要

A transmission unit transmits one of data and a command. An input unit inputs one of a first instruction to transmit the data and a second instruction to transmit the command. A first control unit controls the transmission unit to start a first transmission of the data when the input unit inputs the first instruction. A second control unit controls the transmission unit to start a second transmission of the command when the input unit inputs the second instruction and the transmission unit fails to transmit the data. The second control unit also controls the transmission unit to interrupt the first transmission and start the second transmission when the input unit inputs the second instruction and the transmission unit transmits the data.