Title:
ロビーインターホン、ドアホンシステムおよび通信方法
Document Type and Number:
Japanese Patent JP6468503
Kind Code:
B2
Abstract:
In a doorphone system for an apartment house, it is possible to select optimum equipment arrangement according to the state of existing wiring. In a case where a signal indicating a key number is input, a relay controller determines whether or not a room monitor of a communicating counterpart is connected to a terminal of a lobby interphone (own device). In a case where the relay controller determines that the room monitor of the communicating counterpart is connected via a distributor, the relay controller connects a first relay and opens a communication path between the lobby interphone and a distributor. On the other hand, in a case where the relay controller determines that the room monitor of the communicating counterpart is directly connected without going through the distributor, the relay controller connects a second relay to a terminal connected to the room monitor of the communicating counterpart and opens a communication path between the room monitor of a connection destination and the lobby interphone.
Inventors:
Taku Shimada
Naoto Kawasaki
Kodama swing
Seiichi Yoshidome
Hiroshi Noda
Satoshi Yamada
Naoto Kawasaki
Kodama swing
Seiichi Yoshidome
Hiroshi Noda
Satoshi Yamada
Application Number:
JP2017035152A
Publication Date:
February 13, 2019
Filing Date:
February 27, 2017
Export Citation:
Assignee:
Panasonic IP Management Co., Ltd.
International Classes:
H04M9/06; H04M9/00
Domestic Patent References:
| JP4133588A | ||||
| JP2005260551A |
Attorney, Agent or Firm:
Koichi Washida