Patent ID: 7859570

Claim:
An electronic apparatus comprising: a photodetector element receiving an infrared signal transmitted from a remote controller and outputting a received signal; a conversion unit converting the received signal outputted from the photodetector element into a binary pulse signal and outputting the binary pulse signal; a decode unit for converting the pulse signal outputted from the conversion unit into code data and outputting the code data; a control unit performing a control operation in accordance with the code data; a measuring unit measuring a pulse width of the pulse signal outputted from the conversion unit in a state where the infrared signal from the remote controller is not received at the photodetector element; and a judging unit judging whether the pulse width measured by the measuring unit is equal to or longer than a predetermined time, wherein: if the judging unit determines that the pulse width is shorter than the predetermined time, the control unit judges a stable reception environment, and if the judging unit determines that the pulse width is longer than the predetermined time, the control unit judges an unstable reception environment.