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| Number | Title | Issue Date |
| 7792259 | Collective housing intercom system 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 decisi... | 09/07/2010 |
| 7764775 | Distributed intercom system A distributed intercom system including a centralized interconnection unit with a central control device for receiving, processing and transmitting signals, a power distribution device for transmitting a power signal for distribution and at least one cable connectio... | 07/27/2010 |
| 7697674 | Gate intercom with a wireless telephony interface The present invention is directed to a telephony communication interface device. The device includes a communication transceiver configured to communicate with a remote system via a predetermined communication channel. A control circuit is coupled to the communicati... | 04/13/2010 |
| 7623640 | Door intercom system Disclosed is a door intercom system, which is installed on a door of a community for communicating with and identifying a visitor and opening/closing the door through a network by an inhabitant among a plurality of inhabitants of the community and capable of transfe... | 11/24/2009 |
| 7409052 | Universal intercom adapter for varying residential wiring systems An intercom adapter used for selecting optionally one of three popular in-place residential wiring systems, in which two switches, each with two circuit-selecting contacts provide four permutations for selecting a circuit compatible for the in-place residential wiri... | 08/05/2008 |
| 7400716 | Multifunctional intercom system with message recording/retrieval functions A multifunctional intercom system having message recording/retrieval functions, a remote control unit, and music playing capabilities, wherein the various buttons are labeled in Braille for use by hearing impaired individuals. The intercom system comprises a main co... | 07/15/2008 |
| 7106759 | Network timing reference for an integrated services hub A method and apparatus for synchronizing the sampling rate of digital cells in an integrated services hub. A timing signal is extracted from an asymmetric digital subscriber line. A phase-locked loop modifies the frequency of the extracted signal and generates an ad... | 09/12/2006 |
| 7093693 | Elevator access control system and method An information and access control system and associated methods for personnel transport devices. In one embodiment, the system comprises a signal emitter capable of emitting electromagnetic energy of a first frequency, the electromagnetic energy including first data... | 08/22/2006 |
| 6879670 | Collective housing intercom apparatus The invention makes it possible to call a resident of collective housing even when the apartment number of the resident is unknown. A collective housing entrance substation is connected to residential master stations through a controller, and a name retrieval module... | 04/12/2005 |
| 6631179 | Voice and motion activated telephone A method and system for communicating without use of manual contact with a communications unit. The user approaches a communications system and can activate a communications unit by a proximity/motion detector and/or a voice activation device. The person ... | 10/07/2003 |
| 6438221 | Electronote wall mounted messaging device A wall-hung or shelf situated free-standing voice memorandum system allows an individual to record a message for another member of the household. the system can be used in connection with a household doorbell system so that at the user's choice, the syste... | 08/20/2002 |
| 6058174 | Automatic intercom system for buildings A semi-automatic or a fully automatic intercom system. These intercom systems are hardwired intercom systems which cannot be used with telephone lines. The semi-automatic intercom system can be used with any kind of lobby panel including a lobby panel equ... | 05/02/2000 |
| 6011839 | Control device for a lift A control device for access and lift operation to a predetermined story in multi-family dwellings or other buildings is provided. Call input devices which may comprise a first input button and a second input button are provided in the upper stories of the... | 01/04/2000 |
| 5881142 | Integrated communications control device for a small office configured for coupling within a scalable network An integrated communications control device integrates the telecommunications environment of a small office with an interface to the telephone network. The device is a stand alone unit including a programmable control processor configured by a user based ... | 03/09/1999 |
