| 摘要 |
PURPOSE: A door lock interphone system using a repeater is provided to allow a person who is absent in a user house and remotely located from the house to confirm a visitor and open or close a door lock of the house for the visitor. CONSTITUTION: A door lock interphone system includes a door lock(10), a repeater(20), and an internal interphone(40). The door lock is composed of a key pad(13), a bell button(11), a microphone(16), a speaker(14), a camera(15) for photographing a visitor, and a transmission/reception unit for transmitting/receiving a signal inputted through the bell button, video or audio information of the visitor, inputted through the microphone and camera, and audio information of a resident, output through the speaker. The repeater includes a transmission/reception unit(21) for transmitting/receiving the signals and information to/from the transmission/reception unit of the door lock, an automatic dialing unit(22) for calling the resident, a telephone line network connector, an internal interphone connector(25), and a telephone connector(26). The internal interphone is connected to the internal interphone connector of the repeater when the resident is home to transmit/receive video and audio information to/from the door lock.
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