| 摘要 |
PROBLEM TO BE SOLVED: To provide an interphone device the recording section of which can effectively be used whereby the recording section stores a message recording only when a message is surely received in the case of recording the message during absence. SOLUTION: A living room master unit in a recording setting state starts recording when receiving a call from an entrance slave unit (S1), and starts time count of a timer (S2). The living room master unit terminates the recording after a lapse of 15 seconds (S4) thereafter, and when the entrance slave unit transmits voice for that time, a voice switch is switched from an idle mode to a speech receiving mode and the recording is implemented. When the recording is finished, the living room master unit measures a time while the voice switch stays in the speech receiving mode, that is, a duration time when the message is being talked by a visitor, stores the message when the message is recorded in excess of two seconds without deleting the message (S6), but deletes the message this time temporarily stored in the recording section when the message recording time is two seconds or below (S7). COPYRIGHT: (C)2007,JPO&INPIT
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