| 摘要 |
PROBLEM TO BE SOLVED: To prevent deterioration in the performance of a camera or the like by using a protection cover to cover the camera or the like. SOLUTION: A slave unit 11 in a TV doorphone system is provided with a speaker 21, a microphone 22, a camera 23, a light 24, and a protection cover 25 for covering the microphone 22, the camera 23, and the light 24. The protection cover 25 is provided movably to expose the microphone 22, the camera 23, and the light 24. COPYRIGHT: (C)2006,JPO&NCIPI
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