| 摘要 |
PROBLEM TO BE SOLVED: To provide an interface circuit capable of removing a continuous DC component without distorting the waveform of a transmission signal and an information processor using the interface circuit in respect to an interface circuit loaded with an infrared (IR) interface circuit and a serial interface circuit and an information processor using the interface circuit. SOLUTION: The system is provided with an interface circuit part 13b for outputting a signal corresponding to infrared data association(IrDA), a serial interface circuit part 13c for outputting a signal corresponding to RS232C, a switch 13d for selecting the circuit part 13b or 13c, and an interface selection circuit part 13e for switching the switch 13d. The circuit part 13e is constituted so as to shift the switch 13d by an interface determination signal supplied to an external control terminal Tc. |
