Patents Assigned to Aiphone Co., Ltd.
  • Patent number: 7792259
    Abstract: Irrespective of the distance of a line through which a video signal is taken by the camera of a main entrance station, a satisfactory image having not deterioration but excellent visibility is displayed in a monitor of a residential master station. A distance decision unit of a residential master station for displaying a video signal taken by a camera of an main entrance station in a monitor decides the distance of the line length of a master station line in terms of the voltage drop of the DC power supply fed from a controller to the residential master station. A level compensation unit of the residential master station compensates the level of the video signal in accordance with the decided distance. A distance decision unit of the main entrance station decides the distance of the line length of an entrance line in terms of the voltage drop of the DC power supply fed from the controller to the main entrance station.
    Type: Grant
    Filed: August 16, 2006
    Date of Patent: September 7, 2010
    Assignee: Aiphone Co., Ltd.
    Inventors: Seiya Yamakawa, Yoshiyuki Hirahata
  • Publication number: 20090239465
    Abstract: A doorphone system includes a relay station. A doorphone master station and a relay station are wirelessly connected, and the relay station and the cordless extension master station are wirelessly connected. A wireless communication link between the doorphone master station and the cordless extension master station is established via the relay station. Namely, all of the wireless communication between the doorphone master station and the cordless extension master station is executed via the relay station. The above doorphone system can effectively enlarge the communicatable range between the doorphone master station and the cordless extension master station. By using a cordless phone instead of the relay station, a system formed by combining the doorphone system and the cordless phone can be easily formed.
    Type: Application
    Filed: September 17, 2008
    Publication date: September 24, 2009
    Applicants: PIONEER CORPORATION, PIONEER COMMUNICATIONS CORPORATION, AIPHONE CO., LTD.
    Inventors: Tatsuro NAGAO, Minoru Fujita, Hideaki Miyoshi
  • Publication number: 20090084147
    Abstract: An electric lock device which can be used suitably regardless of an operation mode of a thumb-turn. In the electric lock device, components to be placed at a peripheral part of the thumb-turn are miniaturized by separating a control device and an electric power supply, which require a comparatively large space, from a thumb-turn cover. The electric lock device includes a cover device internally having a motor and a thumb-turn cover, a control device internally having a control part, and a power supply part built-in the control device for supplying power to the control device and the motor. Therefore, the cover device can be more compactified than that of a conventional electric lock device in which the control part and the power supply part are integrally placed with the thumb-turn cover and the motor. The cover device can be attached proximity to a thumb-turn without being protruded from a door.
    Type: Application
    Filed: September 16, 2008
    Publication date: April 2, 2009
    Applicant: Aiphone Co., Ltd.
    Inventors: Yukitaka Mizutani, Kazuya Yoshida, Toru Ando
  • Patent number: D553607
    Type: Grant
    Filed: February 14, 2006
    Date of Patent: October 23, 2007
    Assignee: Aiphone Co., Ltd.
    Inventors: Shouheii Miyamoto, Toshio Hotta
  • Patent number: D554103
    Type: Grant
    Filed: February 14, 2006
    Date of Patent: October 30, 2007
    Assignee: Aiphone Co., Ltd.
    Inventors: Masayuki Morikawa, Toshio Hotta
  • Patent number: D561734
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: February 12, 2008
    Assignee: Aiphone Co., Ltd.
    Inventors: Manabu Yamada, Masanori Kumazawa
  • Patent number: D578993
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: October 21, 2008
    Assignee: Aiphone Co., Ltd.
    Inventors: Manabu Yamada, Masanori Kumazawa
  • Patent number: D588574
    Type: Grant
    Filed: June 11, 2008
    Date of Patent: March 17, 2009
    Assignee: Aiphone Co., Ltd.
    Inventor: Koutarou Takahata
  • Patent number: D595260
    Type: Grant
    Filed: June 11, 2008
    Date of Patent: June 30, 2009
    Assignee: Aiphone Co., Ltd.
    Inventor: Koutarou Takahata
  • Patent number: D620917
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: August 3, 2010
    Assignee: Aiphone Co., Ltd.
    Inventors: Akihiro Hattori, Katsuhiko Ibuki
  • Patent number: D624522
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: September 28, 2010
    Assignee: Aiphone Co., Ltd.
    Inventors: Koutarou Takahata, Katsuhiko Ibuki
  • Patent number: D624523
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: September 28, 2010
    Assignee: Aiphone Co., Ltd.
    Inventors: Koutarou Takahata, Katsuhiko Ibuki
  • Patent number: D686184
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: July 16, 2013
    Assignee: Aiphone Co., Ltd.
    Inventors: Kotaro Takahata, Katsuhiko Ibuki
  • Patent number: D717761
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: November 18, 2014
    Assignee: Aiphone Co., Ltd.
    Inventor: Kotaro Takahata
  • Patent number: D729760
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: May 19, 2015
    Assignee: Aiphone Co., Ltd.
    Inventor: Kotaro Takahata
  • Patent number: D744451
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: December 1, 2015
    Assignee: Aiphone Co., Ltd.
    Inventor: Kotaro Takahata
  • Patent number: D744452
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: December 1, 2015
    Assignee: Aiphone Co., Ltd.
    Inventor: Kotaro Takahata
  • Patent number: D752012
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: March 22, 2016
    Assignee: Aiphone Co., Ltd.
    Inventor: Kotaro Takahata
  • Patent number: D761752
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: July 19, 2016
    Assignee: Aiphone Co., Ltd.
    Inventor: Kotaro Takahata
  • Patent number: D765051
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: August 30, 2016
    Assignee: Aiphone Co., Ltd.
    Inventor: Kotaro Takahata