Title:
DOOR PHONE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2008/056503
Kind Code:
A1
Abstract:
A door phone system that has an indoor unit with improved convenience and with which,
while viewing a smooth video, a user can conduct dialog through the indoor unit
with a visitor present near an outdoor unit. The door phone system (100) has the
outdoor unit (30), the indoor unit (20), and a relay unit (10). The outdoor unit
(30) is placed outdoors. The indoor unit (20) has a display section and a voice
communication section. Also, the indoor unit (20) is placed indoors and is portable.
The relay unit (10) is placed indoors and relays communications between the
outdoor unit (30) and the indoor unit (20). The relay unit (10) performs wireless
communications with the indoor unit (20).
Inventors:
KIMURA MITSUSHIGE (JP)
Application Number:
PCT/JP2007/069834
Publication Date:
May 15, 2008
Filing Date:
October 11, 2007
Export Citation:
Assignee:
MEGACHIPS CORP (JP)
KIMURA MITSUSHIGE (JP)
KIMURA MITSUSHIGE (JP)
International Classes:
H04M9/00
Foreign References:
| JP2005348056A | 2005-12-15 | |||
| JP2005341178A | 2005-12-08 | |||
| JP2005236849A | 2005-09-02 | |||
| JP2005352875A | 2005-12-22 | |||
| JP2004304551A | 2004-10-28 | |||
| JP2004153418A | 2004-05-27 |
Attorney, Agent or Firm:
YOSHITAKE, Hidetoshi et al. (Sumitomo-seimei OBP Plaza Bldg.4-70, Shiromi 1-chome,Chuo-ku, Osaka-shi, Osaka 01, JP)
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