| 摘要 |
PROBLEM TO BE SOLVED: To make performable the data transfer communication of a data amount exceeding interrupt transfer without trouble even in the job processing state where a first communication route is occupied. SOLUTION: The information processor is characterized in having a constitution where a USB control part 109a assigns a pipe 303 for transmitting of input/output equipment and issues a set equipment control command (CMD) for state acquisition, and when it communicates with peripheral equipment while using a first pipe for data transmitting, a second pipe for data receiving and a fourth pipe for interrupt, a third pipe is used for acquiring the state of the peripheral equipment regardless of the state of the first pipe, and the command for acquiring the state of the peripheral equipment is issued while using the third pipe, and on the basis of this command, state information issued from the peripheral equipment is acquired by using the second pipe.
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