Abstract: A wireless switch comprising: a sensor for sensing a change of a state of a barrier; a selector positionable between a first position and a second position; a transmitter operatively coupled to the sensor and selector; and wherein the transmitter transmits a first wireless signal when the selector is positioned in the first position and the sensor senses a change of state, and the transmitter transmits a second wireless signal different from the first signal when the selector is positioned in the second position and the sensor senses the change of state.

Abstract: A power management lock system including an electronic lock unit configured to lock and unlock a door and further including at least one sensor in communication with the electronic lock unit, the sensor configured to sense an open condition of the door and a closed condition of the door, wherein the electronic lock unit is configured to receive door data pertaining to the open condition and the closed condition from the at least one sensor, and where the electronic lock unit is further configured to manage the provision of power within the electronic unit based upon the door data.

Abstract: The application discloses various methods and systems that utilize infrared communication to enhance and manage the security and convenience of occupants and the operation and efficiency of the staff of a multi-unit building.

Abstract: The application discloses various methods and systems that utilize infrared communication to enhance and manage the security and convenience of occupants and the operation and efficiency of the staff of a multi-unit building.

Abstract: A system in operable communication with a doorbell chime for audio annunciation of a visitor to an occupant of a room in a multiple room building, the system configured to indicate a status of the room to the visitor or occupant, the system comprising: a switch assembly configured to convey a message outside of the room; the switch assembly operable from inside the room; an indicating assembly in operable communication with the switch assembly, the indicating assembly configured to indicate the message when the message is selected, the message viewable from inside and outside of the room; and a doorbell button in operable communication with the doorbell chime, the doorbell button operably connected with the indicating assembly and operable from outside of the room by the visitor.

Abstract: A wireless switch comprising: a sensor for sensing a change of a state of a barrier; a selector positionable between a first position and a second position; a transmitter operatively coupled to the sensor and selector; and wherein the transmitter transmits a first wireless signal when the selector is positioned in the first position and the sensor senses a change of state, and the transmitter transmits a second wireless signal different from the first signal when the selector is positioned in the second position and the sensor senses the change of state.

Abstract: A self-synchronizing infra-red communication system. The coding scheme involves transmitting a series of pulses, the separations between successive pulses representing the same data. Even though the separations between successive pulses all represent the same data, the separations are all different; it is this feature which allows for self-synchronization. Arrival times of successive pulses are recorded; the arrival times represent the receipt not only of transmitted pulses, but also of detected noise. The time differences between all arrival times (not only successive arrival times) are checked for consistency with predetermined allowable time-interval ranges which can separate successively transmitted pulses in a data sequence. When a sufficient number of such checks have been made, representing a sufficient degree of redundancy, it is possible to derive the data value represented by all of the pulse separations.

Abstract: An infrared remote control system for allowing a console to control the operation of a plurality of remote devices all situated in the same substantially enclosed space, for example, a hotel room. The console includes several simultaneously-operated infrared transmitters, the transmitters being aimed in different directions. Remote devices respond to respective codes, but some also retransmit received radiation so that the console can gain access even to remote devices which are not along a line of sight.