ELECTRONIC DEVICE HAVING IRDA SYSTEM COMMUNICATION FUNCTION, EXTERNALLY MOUNTED COMMUNICATION EQUIPMENT FOR ADDING IRDA SYSTEM COMMUNICATION FUNCTION AND ITS ADDING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an electronic device with an IrDA system communication function added by incorporating a controller having an IrDA system communica tion function in the electronic equipment without largely changing the existing hardware and software of the electronic equipment. ;SOLUTION: An IrDA system communication function is added to electronic equipment by such manners that a data transmission path connecting a Main CPU 21 and a level conversion driver 22 formed in the existing electronic equipment is branched, connected to an IrDA transceiver 24 which transmits and receives an infrared signal and connected to a semiconductor integrated circuit 1 having an IrDA system communication control function.;COPYRIGHT: (C)2000,JPO