Abstract: Systems and methods for locating UAV. The methods comprise: causing a physical joining of a payload with a fuselage of the UAV (where the payload comprises a communication relay); using a power source to supply power to the payload that is independent from a main power source of the UAV; and continuing to perform relay operations by the communication relay and location operations by a first locator, when power is no longer being supplied by the main power source.

Abstract: Wireless communication device (WCD) for use in an unmanned aerial vehicle (UAV) includes a multi-purpose WCD accessory. The accessory is comprised of a first plate having opposed first and second major faces. The first major face includes a heat transfer surface configured to contact a body of the WCD interior of the UAV when the WCD is secured to the first major face. A second plate is attached to the second major face in a cantilever configuration and extends exterior of the fuselage in a direction away from the second major surface. The second plate comprises at least a portion of a ground plane for an antenna system utilized by the WCD, and together with the first plate forms a heat sink for the WCD.

Abstract: Systems and methods for protecting intellectual property of a circuit via obfuscation of logic through encryption. The methods comprise: analyzing a combinational circuit (CC) to identify first logic gates that perform first function(s) which is(are) implementable by LUT(s); dividing CC a first portion comprising the first logic gates and a second portion comprising remaining logic gates; protecting gate logic of the first portion by at least storing information implementing the first function(s) in an encrypted LUT format in a memory device of the circuit such that the first function(s) is(are) obfuscated when the circuit is in an at-rest state; and interfacing the remaining logic gates with the memory device such that the circuit is configured to generate an output in accordance with operations of the combinational circuit using the information stored in the encrypted LUT format.

Abstract: Systems and methods for operating an antenna assembly. The methods comprise: receiving, at the first circularly polarized antenna, a first signal comprising a desired signal emitted from a first signal source located at a first altitude higher than a second altitude of the antenna assembly and an interfering signal emitted from a second signal source located at a third altitude lower than the second altitude; receiving the interfering signal at the second circularly polarized antenna (where the first and second circularly polarized antennas are disposed on opposite sides of an antenna reflector and having opposite circular polarizations); generating a second signal by shifting a phase of the interfering signal which was received at the second circularly polarized antenna by an amount to cause the second signal to be out-of-phase with the first signal; and providing an antenna pattern with a null at or below a horizon by destructively combining the second signal with the first signal.

Abstract: Systems and methods for reducing detection and interference of signals communicated from a communication device. The methods comprise: coupling an RF-to-FSO converter to a port of the communication device; providing a first radio frequency signal from the communication device to the RF-to-FSO converter via the port; using the first radio frequency signal by the RF-to-FSO converter to modulate an optical signal; and emitting the modulated optical signal from the RF-to-FSO converter through free space.

Abstract: Adaptive tunable antenna system includes a first radiating element having an elongated length and a second radiating element extending from a distal end of the first radiating element. The first radiating element is for a high band of operation and the second radiating element is for a low-band of operation. The second radiating element is a helical member including a plurality of turns. A low-band circuit selectively bypasses one or more of the turns of the second radiating element in response to a control signal.

Abstract: An example method comprises receiving, at a first digital device, video data, scanning video content of the video data for visual transitions within the video content between consecutive frames of the video data, each transition indicating significant visual transitions relative to other frames of the video data, timestamping each visual transition and create a first set of temporal video fingerprints, identifying items of metadata to be associated with the video data, identifying a location within the video data using the temporal video fingerprints for the identified items of metadata, generating a metadata index identifying each item of metadata and a location for each item of metadata relative to the video data using at least one of the temporal video fingerprints, and transmitting, at the first digital device, the video data, the first set of temporal video fingerprints, and the metadata index to a different digital device.

Abstract: Systems (100) and methods (800) for communicating information. The methods comprise: storing message sets in Communication Devices (“CDs”) so as to be respectively associated with speaker information; performing operations, by a first CD, to capture an audio message spoken by an individual and to convert the audio message into a message audio file; comparing the message audio file to each reference audio file in the message sets to determine whether one of the reference audio files matches the message audio file by a certain amount; converting the audio message into a text message when a determination is made that a reference audio file does match the message audio file by a certain amount; generating a secure text message by appending the speaker information that is associated with the matching reference audio file to the text message, or by appending other information to the text message; transmitting the secure text message.

Abstract: Systems (100) and methods (1000) for operating a shoulder Speaker Microphone (“SM”) device coupled to a radio. The methods comprising: using a speaker and a microphone of the shoulder SM device to facilitate auditory communications to and from a user of the radio; activating a thermal imaging device integrated with the shoulder SM device when the shoulder SM device resides at a location of an incident event; capturing thermal images by the thermal imaging device of the shoulder SM device; and performing operations by the shoulder SM device to cause the thermal images to be streamed over a network.

Abstract: An example method comprises receiving, at a first digital device, video data, scanning video content of the video data for visual transitions within the video content between consecutive frames of the video data, each transition indicating significant visual transitions relative to other frames of the video data, timestamping each visual transition and create a first set of temporal video fingerprints, identifying items of metadata to be associated with the video data, identifying a location within the video data using the temporal video fingerprints for the identified items of metadata, generating a metadata index identifying each item of metadata and a location for each item of metadata relative to the video data using at least one of the temporal video fingerprints, and transmitting, at the first digital device, the video data, the first set of temporal video fingerprints, and the metadata index to a different digital device.

Abstract: Antenna system includes a base structure and a multiplicity of vertebrae arranged in a stack to define a spine. The spine has an elongated length which extends from a base end to a tip end. A compression applicator is configured to apply an elastic compression force on the stack in a direction along the elongated length from the tip end to the base end. Vertebra interfaces associated with each of the adjacent pairs of the vertebrae are configured to facilitate a variable deviation in an angular alignment of a vertebra axis of each vertebra relative to an adjacent one of the vertebra contained in the stack.

Abstract: An example method comprises receiving, at a first digital device, video data, scanning video content of the video data for visual transitions within the video content between consecutive frames of the video data, each transition indicating significant visual transitions relative to other frames of the video data, timestamping each visual transition and create a first set of temporal video fingerprints, identifying items of metadata to be associated with the video data, identifying a location within the video data using the temporal video fingerprints for the identified items of metadata, generating a metadata index identifying each item of metadata and a location for each item of metadata relative to the video data using at least one of the temporal video fingerprints, and transmitting, at the first digital device, the video data, the first set of temporal video fingerprints, and the metadata index to a different digital device

Abstract: Broadband HF antenna system includes a conductive radiating element in the form of a continuous conductive loop. The conductive loop includes first and second elongated conductor portions. The conductive loop is electrically connected at first and second loop ends to an impedance matching network disposed within a chassis. The first elongated conductor portion is comprised of a whip antenna which functions as a cantilevered spring attached at one end to the rigid chassis. The whip antenna is resiliently maintained in a curved state by a tension force applied by the second elongated conductor portion. A spacing or gap between the first and second elongated conductor portions to establish the loop configuration is maintained exclusive of any spacer or hanger element.

Abstract: A method for compressing a short message includes receiving a short message that includes a plurality of text strings for compression, dividing the short message into one or more sub-blocks, where a number of text strings in each of the one or more sub-blocks is less than or equal to a predetermined number. The method also includes compressing each of the one or more sub-blocks by identifying a type of a first text string, identifying a code representing the type, determining whether the first text string exists in a library, upon determining that the first text string exists in the library, determining an index corresponding to the first text string, extracting a predetermined number of least significant digits of the index, and replacing the first text string in that sub-block with the code and the extracted predetermined number of least significant digits of the index.

Abstract: Systems (400) and methods for reducing a number of cyclostationary features in a transmitted signal. The methods comprise: obtaining by a transmitter a discrete-time IF signal comprising a sequence of samples all having a same sample duration; performing operations by a sub-sample dithering processing device of the transmitter to modify a sample timing of the discrete-time IF signal by decreasing or increasing a duration of at least one first sample of the sequence using a digital signal processing technique in a digital domain; converting the discrete-time IF signal to an RF signal; and transmitting the RF signal having a reduced number of cyclo stationary features.

Abstract: Systems (400) and methods for removing dither introduced into a transmitted RF signal. The method comprising: receiving, by a receiver, the transmitted RF signal; converting, by the receiver, the transmitted RF signal into a discrete-time IF signal comprising a sequence of samples, where at least a first sample of said samples has a first sample duration different than a second sample duration of at least a second sample of said samples; and performing operations by a sub-sample dither removal device of the receiver to modify a sample timing of the discrete-time IF signal by decreasing or increasing the first sample duration of the first sample using a digital signal processing technique in a digital domain.

Abstract: Methods and apparatus are provided for adaptively focusing a lens. In one approach, electromagnetic energy is employed to modify a shape or thickness of a lens such that its refractive power and focal length are modified. In one aspect, a lens embodying adaptive focus features requires low power, and can be adjusted quickly. One or a plurality of electromagnets can be employed to compress or separate end portions of an embedded haptic, the force from which acts to alter the shape of the haptic, thus modifying the refractive power and focal length of a lens.

Abstract: A method and apparatus is disclosed for artificially creating space within a lens such that, when an image is projected from the lens onto the retina of the user, the image appears to be positioned further away than it actually is. This is accomplished by embedding a series of projection tubes on the perimeter of a lens adapted to project an image inward toward the retina of the user. The projection tubes will provide artificial spacing and cause the projected image to seem distant or otherwise positioned further away, creating a more realistic viewpoint for the user.

Abstract: The present invention is a method and apparatus projecting an image or series of images onto the retina. Furthermore, the present invention is neither cumbersome nor obstructive to the user. This is accomplished by embedding an imaging lens on the perimeter of the contact lens adapted to project an image inward toward the center of the contact lens, wherein the projected light will then be redirected onto the retina.

Abstract: A medical device including a pre-defined space such as a geometric shape or void. In one approach, the pre-defined space provides desired rigidity and more comfort for a user. There is also provided an approach which enables engravings and accommodates electronics, mechanical objects, or other rigid or unique shapes to be embedded within a medical device such as a contact lens. When adapted to swellable substrates, the resulting swelled material can leave a gap around a perimeter of embedded structure.