The entryway image output system and the entryway image output device, entryway image output manner, and the microphone which

摘要

PPROBLEM TO BE SOLVED: To posteriorly attach a monitor function to an interphone system of a multiple dwelling house without modifying the interphone system having no monitor function. PSOLUTION: The entrance image output apparatus 1 includes: a microphone 11 for transducing a sound into an electric signal; a discrimination section 22 that uses the electric signal so as to discriminate whether or not the sound picked up by the microphone 11 is a call tone generated from an in-room terminal of an interphone of the interphone system of the multiple dwelling house; a collective entrance image information receiving section 13 for receiving collective entrance image information being information denoting an image of a visitor at a collective entrance; and an output section 16 that outputs the image denoting the collective entrance image information received by the collective entrance image information receiving section 13 to a display device 21 when the discrimination section 22 discriminates that the sound picked up by the microphone 11 is the call tone generated from the in-room terminal of the interphone. PCOPYRIGHT: (C)2008,JPO&INPIT