A jog dial server monitors an operation notification by a jog dial, then decides the operation based on the operation notification, and executes the decided operation as a jog script engine. The jog dial server loads a script file describing status transition of the jog dial in the script language at the time of start-up, then reads the status transition, and operates in accordance with the status transition thus read. Thus, an information processing device is provided which enables extension of the operation with respect to an application incompatible with the jog dial.