Patent application number | Description | Published |
20080254764 | ROAMING METHOD WITH CALL ANNOUNCEMENT - A method is disclosed for completing a roaming cellular call between a roaming subscriber and another party. The first step is initiating the roaming call between the roaming subscriber and the another party. The roaming subscriber is provided with a prepaid debit account. The roaming subscriber is then connected to a cellular network when a connection between the subscriber and the another party is to be made such that a call has been built over a calling network. The prepaid debit account of the roaming subscriber is then examined to determine the balance thereof, and then the roaming subscriber is informed of financial information regarding the call connection prior to connecting the roaming subscriber to the another party over the already built call. | 10-16-2008 |
20150260650 | SYSTEM AND METHOD FOR MAKING CONCENTRATION MEASUREMENTS WITHIN A SAMPLE MATERIAL USING ORBITAL ANGULAR MOMENTUM - Signal generation circuitry generates a first signal having at least one orbital angular momentum applied thereto and applies the first signal to the sample. A detector for receives the first signal after it passes through the sample and determines the concentration of the material within the sample based on a detected value of orbital angular momentum with the first signal received from the sample. | 09-17-2015 |
20150288476 | SYSTEM AND METHOD FOR COMMUNICATION USING ORBITAL ANGULAR MOMENTUM WITH MULTIPLE LAYER OVERLAY MODULATION - A communications system includes a transmitter for transmitting an optical signal including a plurality of data streams over an optical communications link. The transmitter includes first signal processing circuitry for processing each of the plurality of input data streams to generate a parallel pair of data streams including an in-phase stream (I) and a quadrature-phase stream (Q) for each of the plurality of input data streams. The first signal processing circuitry modulates a first and second parallel pair of data streams with a selected one of at least three mutually orthogonal functions at a first and second signal widths, respectively, to generate a plurality of first data sub-layers and a plurality of second data sub-layers and generates a plurality of composite data stream by overlaying the first data subs-layers with the second data sub-layers at a preconfigured overlay offset. Second signal processing circuitry places the plurality of composite data streams on a wavelength of the optical communications link. Each of the plurality of composite data streams having a different orbital angular momentum associated therewith to enable transmission of each of the plurality of composite data streams on the wavelength at a same time. | 10-08-2015 |
20150288542 | SYSTEM AND METHOD FOR COMMUNICATION USING ORBITAL ANGULAR MOMENTUM WITH MULTIPLE LAYER OVERLAY MODULATION - A method for transmitting a plurality of input streams from a transmitting unit to a receiving unit receives the plurality of input data streams and each of the plurality of input data streams are processed to generate a parallel pair of data streams including an in-phase stream (I) and a quadrature-phase stream (Q) for each of the plurality of input data streams. A first and second parallel pair of data streams are modulated with a selected one of at least three mutually orthogonal functions at a first and second signal widths, respectively, using a predefined modulation process to generate a plurality of first data sub-layers and a plurality of second data sub-layers. A plurality of composite data stream are generated by overlaying the first data subs-layers with the second data sub-layers at a preconfigured overlay offset. The plurality of composite data streams are overlapped by a predetermined overlap amount and placed on a wavelength of a communications link. Intersymbol interference is controlled between the plurality of composite data streams responsive to the predefined modulation process used to create the first and second data sub-layers. | 10-08-2015 |
20150289766 | ORBITAL ANGULAR MOMENTUM AND FLUORESCENCE-BASED MICROENDOSCOPE SPECTROSCOPY FOR CANCER DIAGNOSIS - An apparatus for performing an endoscopic procedure for detecting cancerous tissue includes a detection probe for detecting the cancerous tissue. The detection probe includes a first fiber for emitting an ultraviolet light beam having an orthogonal function applied thereto and a second fiber for receiving emissions from tissues responsive to the ultraviolet light beam emitted for the first fiber. An ultraviolet emission source generates the ultraviolet light beam. Orthogonal function circuitry applies the orthogonal function twist to the ultraviolet light beam. Detection circuitry detects fluorescence and orthogonal function within the emissions from the tissues received over the second fiber. | 10-15-2015 |
20160033406 | SYSTEM AND METHOD USING OAM SPECTROSCOPY LEVERAGING FRACTIONAL ORBITAL ANGULAR MOMENTUM AS SIGNATURE TO DETECT MATERIALS - An apparatus that detects a material within a sample includes signal generation circuitry that generates a first signal having at least one orbital angular momentum applied thereto and applies the first signal to the sample. A detector receives the first signal after the first signal passes through the sample and detects the material responsive to a detection of a predetermined profile of orbital angular momentum states within the first signal received from the sample. | 02-04-2016 |
20160041411 | SUPPRESSION OF ELECTRON-HOLE RECOMBINATION USING ORBITAL ANGULAR MOMENTUM SEMICONDUCTOR DEVICES - An apparatus for suppressing electron/hole recombination includes a photonic device that generates electron/hole pairs responsive to a light beam interacting with the photonic device. An orbital angular momentum (OAM) generation device is located to impart an orbital angular momentum to a light beam before the light beam interacts with the photonic device. The electron/hole pair recombination generated from an OAM imparted light beam is less than electron/hole pair recombination of a non-OAM imparted light beam. | 02-11-2016 |
20160041523 | SYSTEM AND METHOD FOR APPLYING ORTHOGONAL LIMITATIONS TO LIGHT BEAMS USING MICROELECTROMECHANICAL SYSTEMS - A system for generating a light beam having a plurality of orthogonal function modes includes a light source for generating a plane wave light beam. A MicroElectroMechanical (MEM) system including an array of micro-mirrors for generating the light beam having the plurality of orthogonal function modes applied thereto responsive to the plane wave light beam and control signals for controlling the array of micro-mirrors. A controller generates the control signals to control a position of each of a plurality of micro-mirrors of the array of micro-mirrors. The controller controls the position of the micro-mirrors to generate a plurality of holograms for applying the plurality of orbital angular momentum modes to the plane wave light beam responsive to the control signals. | 02-11-2016 |
20160043794 | SYSTEMS AND METHODS FOR FOCUSING BEAMS WITH MODE DIVISION MULTIPLEXING - A system for focusing a multiplexed beam includes OAM signal processing circuitry for generating a multiplexed OAM multiplexed signal. A plurality of antennas comprises an antenna array. An antenna array control circuit controls transmission of the multiplexed OAM signal from each of the plurality of antennas in the antenna array. The antenna array control circuit generates control signals to cause the antenna array to transmit the OAM multiplexed signal from each of the plurality of antennas of the antenna array toward a focus point as a transmission beam and controls a timing of the transmissions of the OAM multiplexed signal from each of the plurality of antennas of the antenna array to cause the transmitted OAM multiplexed signals to arrive at the focus point at substantially a same time. | 02-11-2016 |
20160044647 | MODULATION AND MULTIPLE ACCESS TECHNIQUE USING ORBITAL ANGULAR MOMENTUM - The present invention as disclosed and described herein, in one aspect thereof, comprises a method for multiple access communications over a communications link involves receiving a plurality of data streams from a plurality of data sources. The plurality of data streams are grouped into a plurality of groups. Orthogonal frequency division multiplexing (OFDM) processing is applied to each of the plurality of groups. Each of the plurality of groups uses a same combination of frequency and time slot combinations in the OFDM processing. A different orthogonal function is applied to each of the OFDM processed groups to uniquely identify each of the OFDM processed group from each other and the orthogonal function processed groups are transmitted over the communications link. | 02-11-2016 |