Multifunction information processing system for performing operations in parallel and storage medium for use by the same

摘要

A multifunction information processing system includes a host device and a multifunction peripheral device. Data is transmitted from the host device to the multifunction peripheral device in units of data packets whose header includes an identification flag of a driver of the host device. In the same way, data is also transmitted from the multifunction peripheral device to the host device in units of data packets whose header includes the identification flag of the driver program that corresponds to the unit of the multifunction peripheral device that is sending the data. The data packets to be transmitted or received are arranged as a temporal sequence. The host device and the multifunction peripheral device perform the data transmission and data reception operations in parallel through time-sharing.