System and method for location-based security

    公开(公告)号:US10244347B2

    公开(公告)日:2019-03-26

    申请号:US15635720

    申请日:2017-06-28

    Abstract: A mobile computing device, including: a first memory device having first computer-readable instructions tangibly recorded thereon; a first hardware processor configured to execute the first computer-readable instructions recorded on the first memory device; and an RFID component that includes a transceiver configured to receive a proximity signal from at least one RFID reader when the RFID component is within a predetermined range of the at least one RFID reader, and a second memory device configured to store the proximity signal, wherein the first hardware processor is configured to, upon executing the instructions recorded on the first memory device, control at least one operation of the mobile computing device in accordance with the proximity signal received by the transceiver of the RFID component from the at least one RFID reader.

    M-ARY frequency presence modulation communication system and method

    公开(公告)号:US10142030B1

    公开(公告)日:2018-11-27

    申请号:US15835086

    申请日:2017-12-07

    Abstract: An optical communication system that includes a data transmitter. The data transmitter includes at least one optical emission device configured to output light energy as an optical beam having an operating bandwidth; a beam dividing device arranged to receive and divide the operating bandwidth of the optical beam into bandwidth portions of plural communication bands; a focusing grating; and a digital mirror array having a plurality of digital mirrors. In an imaging mode, the optical communication system is configured to perform hyperspectral imaging by setting all of the plurality of digital mirrors to positions that transmit all wavelengths of a communication band among the plural communication bands to the focusing grating.

    M-ARY FREQUENCY PRESENCE MODULATION COMMUNICATION SYSTEM AND METHOD

    公开(公告)号:US20180191445A1

    公开(公告)日:2018-07-05

    申请号:US15394033

    申请日:2016-12-29

    Inventor: Keith A. Blanks

    Abstract: An optical communication system having a data transmitter which includes: at least one optical emission device to output light energy as an optical beam having an operating bandwidth; a beam dividing device to receive and divide the operating bandwidth into plural communication bands; a frequency presence modulation unit to: spectrally segregate the bandwidth of at least one communication band into plural channels, and modulate the bandwidth to selectively produce an optical output signal with wavelengths that correspond to one or more of the channels, wherein presence and absence of energy within channels constitute an information packet for data communication; a controller for providing a control signal to the frequency presence modulation unit to spectrally segregate the bandwidth of the at least one communication band into the plural channels; and a telescope to transmit the optical output signal.

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