REMOTE CONTROL SIGNAL TRANSMITTER

摘要

PROBLEM TO BE SOLVED: To provide a remote control signal transmitter which uses a portable telephone set to remotely control an external device by generating and transmitting a remote control signal corresponding to an operation key to the external device based on a tone signal generated from a speaker at the time of operation of various keys arranged on the portable telephone set. SOLUTION: The tone signal outputted from a speaker 321 based on operation of various keys in a key array K on a portable telephone set 3 is acquired through a microphone 21. After the tone signal acquired through the microphone 21 is detected by a tone signal detection part 22, an operation key is detected based on a table in a memory 51, and pulse signal data corresponding to this detected key is converted to a prescribed pulse signal by a transmission pulse conversion part 24 and is transmitted out from an infrared light emitting part 25 to an infrared light reception part 41 of a communication KARAOKE (orchestration without lyrics) device 4.