INTERPHONE MASTER UNIT, DOORPHONE SLAVE UNIT, AND INTERPHONE SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an interphone master unit whereby an image of a notice target such as a visitor or the like can quickly be displayed in the middle of a monitor screen by a simple operation and to provide a doorphone slave unit and an interphone system. SOLUTION: A touch panel sensor is provided to a display section 6 for displaying an image, and when an upper panel is depressed, a drive amount (including a drive direction) of an optical axis L of an optical system is calculated in response to a depressed position and the slave unit 3 drives the optical axis of the optical system 32 in panning and tilt directions on the basis of optical axis drive data denoting the drive amount so as to display the image equivalent to the depressed position to nearly the middle of the display screen. COPYRIGHT: (C)2005,JPO&NCIPI