Abstract: This invention relates to systems and methods for the transmission of data by a wireless controller connected between a power source and a lighting device. The wireless controller wirelessly receives control signals to control dimming and on/off operation of the lighting device. Furthermore, energy use of the lighting device is monitored and information about the energy use is sent wirelessly to a receiver.

Abstract: This invention relates to systems and methods for the transmission of data by a wireless controller connected between a power source and a lighting device. The wireless controller wirelessly receives control signals to control dimming and on/off operation of the lighting device. Furthermore, energy use of the lighting device is monitored and information about the energy use is sent wirelessly to a receiver.

Abstract: This invention relates to systems and methods for the transmission of data by a wireless controller connected between a power source and a lighting device. The wireless controller wirelessly receives control signals to control dimming and on/off operation of the lighting device. Furthermore, energy use of the lighting device is monitored and information about the energy use is sent wirelessly to a receiver.

Abstract: This invention relates to the zonal transmission of data by optical means through the modulation of light from common building light fixtures, including the light output of fluorescent, mercury vapor, and other arc or discharge lamps and fixtures; a system for the reuse of radio frequencies by smart radios, and the accurate locating and tracking of objects or persons as they move through a building; by means of creating a communications system which exploits the existing infrastructure of a building to facilitate the transmission of relatively secure control and communications data via creation of a multiplicity of area-limited interference-free communication zones. The system facilitates the transmission of wide-area as well as zonal-specific data. The system facilitates the creation of a database that contains present location and history location and movement data of persons and objects as they move through a building.

Abstract: This invention relates to the zonal transmission of data by radio means and optionally by optical means through the modulation of light from common building light fixtures, including the light output of fluorescent, mercury vapor, and other arc or discharge lamps and fixtures; a system for the reuse of radio frequencies by smart radios, and the accurate locating and tracking of objects or persons as they move through a building; by means of creating a communications system which exploits the existing infrastructure of a building to facilitate the transmission of relatively secure control and communications data via creation of a multiplicity of area-limited interference-free communication zones. The system facilitates the transmission of wide-area as well as zonal-specific data. The system facilitates the creation of a database that contains present location and history location and movement data of persons and objects as they move through a building.

Abstract: This invention relates to the zonal transmission of data by the modulation of the light output of arc lamps or discharge lamps; including the visible or invisible light output of fluorescent lamps, mercury vapor lamps, high or low-pressure sodium lamps, metal-halide based lamps, or other arc or discharge lamps. The method results in an easily installed, easily maintained, and economical to purchase, optical-wave communications system which exploits the existing infrastructure of a building or facility to facilitate the transmission of data in individual zones; thereby facilitating the transmission of wide-area as well as zonal-specific data to compatible receivers, and further facilitating the determination of location of remote devices or users, and the delivery or exchange of information or data, utilizing limited range transmission techniques.

Abstract: A self-contained cellular emergency roadside call box is disclosed without the use of external telephone lines. The call box is solar powered with battery storage and comprises a controller coupled to a cellular transceiver. The controller is also coupled to a solar array and battery which is recharged through the controller. The call box communicates through a radio-telephone link established by cellular transceiver to a cellular telecommunication system. The cellular telecommunication system includes a call site controller and mobile telephone switching terminal. Each call box comprises a plurality of status subcircuits for monitoring conditions such as battery condition and transmitter status. The call box communication and the status are processed by a micro processor which generates appropriate commands required by the cellular transceiver. Information can be transmitted bidirectionally between each of the call boxes and the communication applications processor.

Abstract: Hands-free two-way communication is achieved, without the necessity of selectively muting either the sent or received signal and without the generation of interfering acoustical feedback between the speaker and microphone at the hands-free station, by frequency offsetting the audio signal sent from the hands-free station. The audio signal is frequency offset by first modulating the audio signal at a first carrier frequency to produce modulated upper and lower sideband outputs. The modulated upper sideband output is filtered out, and the modulated lower sideband output is coupled to the input of a demodulator. The modulated lower sideband output is then demodulated at a second carrier frequency offset from the first carrier frequency by a predetermined amount. A demodulated upper sideband output and lower sideband output is thus generated. The demodulated upper sideband output is filtered out, and the demodulated lower sideband output is provided for transmission or broadcast in the two-way communication.

Abstract: A self-contained cellular emergency roadside call box is disclosed without the use of external telephone lines. The call box is solar powered with battery storage and comprises a controller coupled to a cellular transceiver. The controller is also coupled to a solar array and battery which is recharged through the controller. The call box communicates through a radio-telephone link established by the cellular transceiver to a cellular telecommunication system. The cellular telecommunication system includes a call site controller and mobile telephone switching terminal. Each call box comprises a plurality of status subcircuits for monitoring conditions such as battery condition and transmitter status. The call box communication and the status are processed by a micro processor which generates appropriate commands required by the cellular transceiver. Information can be transmitted bidirectionally between each of the call boxes and the communication applications processor.