Abstract: Adding an end-of-frame indicator to streaming video data at video frame granularity. The method includes obtaining a set of data for a video frame in an elementary stream of video data. The method further includes identifying that the set of data for the video frame is complete. As a result of identifying that the set of data for the video frame is complete, an end-of-frame indicator is added to the set of data in a transport layer of a multiplexed media stream that includes the end-of-frame indicator in the transport layer and the set of video data in the elementary stream layer of the multiplexed media stream. The multiplexed media stream is transmitted including the set of data in the elementary stream layer of the video stream and the end-of-frame indicator in the transport layer of the video stream multiplexed together.

Abstract: Transmitting a probe signal. A method includes transmitting a signal, having a predetermined total power, during a transmit cycle. The signal has a traffic channel transmitting user data and a probe channel to locate new nodes to add to the network. The transmit channel uses a first portion of the total power and the probe channel uses a second portion of the total power. The method further includes performing a probe cycle by lowering the power in the first portion of the total power and raising the power in the second portion of the total power, but maintaining the total power at the same level as the total power during the transmit cycle. The method further includes, after the probe cycle, raising the power in the first portion of the total power and lowering the power in the second portion of the total power.

Abstract: In one scenario, a pillbox array is provided. The pillbox array includes a feed network unit that receives an input wave. The feed network unit includes feed branches for splitting and transmitting the input wave, pillbox reflectors that collimate the input wave, and radiating waveguides for radiating the collimated input wave. The pillbox array further includes a load plate mounted on the feed network unit, where the load plate has load elements placed between the radiating waveguides. This pillbox array also includes a polarizer plate that is mounted on the load plate and the feed network unit. The polarizer plate includes polarizers arranged such that when the polarizer plate is laterally shifted to a first side of the radiating waveguides, a first circular polarization occurs, and when the polarizer plate is laterally shifted to a second side of the radiating waveguides, a second circular polarization occurs.

Abstract: A device receives a first data item. The device stores the first data item in non-volatile memory. The device subsequently receives a second data item, where the second data item was previously generated from the first data item and a cryptographic key. The device performs a function such as, for example, an exclusive-or operation on the first data item and the second data item to generate the cryptographic key. The device uses the generated cryptographic key to encrypt data which may be transmitted over a wireless interface.

Abstract: Geolocating an emitter of a low probability of detection (LPD) signal being transmitted from the emitter in an environment with a noise floor, where the LPD signal is below the noise floor. At a sensor node, a version of the LPD signal is received from the emitter. For the version of the LPD signal, cyclostationary feature detection or energy detection of the version of the LPD signal is performed. A low probability of detection descriptor word, including at least one of a frequency feature of the version of the LPD signal or an energy feature of the version of the LPD signal is created. The low probability of detection descriptor word is provided to a data processor, where the data processor is configured to use a plurality of low probability of detection descriptor words from different sensor nodes for different versions of the LPD signal to geolocate the emitter.

Abstract: The application is generally directed to transmitting and receiving signals in a fashion that can mask the presence of the signals by including timing information in the signals using artifacts in a carrier signal. For example, one embodiment includes a method of transmitting a signal in a way to mask the presence of the signal or to reduce the ability of external entities to extract data from the signal. The method includes accessing a data signal. A phase of the data signal is correlated to a phase of a substantially continuous carrier signal carrying the data signal. The substantially continuous carrier signal carrying the data signal with the phase of the data signal correlated to the phase of the substantially continuous carrier signal is transmitted to a receiver, such that the data signal can be extracted by using phase correlation between the data signal and the substantially continuous carrier signal.

Abstract: Flight data recorder receives from an aircraft a data stream specifying values for flight data parameters while an aircraft is in flight. The flight data recorder stores the values in a crash survivable non-volatile memory unit of the flight data recorder. The flight data recorder determines an occurrence during flight of an exception condition based on an evaluation of at least one exception parameter. Responsive to determining the occurrence of the exception condition, the flight data recorder wirelessly communicates selected aircraft data to a remote location external of the aircraft using a wireless transmitter under the exclusive control of the flight data recorder.

Abstract: A method and system for identifying a data recorder based upon a unique signature generated for the data recorder. Configuration information is received, the information specifying a plurality of data recording input parameters which are selected to facilitate use of the data recorder in a particular data recording application. A unique signature is generated according for the data recorder, the unique signature including a code which uniquely identifies the data recorder based on a transformation of the configuration information. The unique signature is stored for subsequent access or reference. To differentiate between similar makes and models of data recorders, at least a portion of the unique signature includes a unique core part number that is assigned to only one data recorder by, for example, the manufacturer of the data recorder.

Abstract: Various circuits may benefit from suitable protection. For example, certain displays, such as active matrix liquid crystal displays, may benefit from enclosures configured to protect driver circuits from high intensity radiated fields. A system can include a first protective conductive coating layer. The system can also include a first insulating layer on the first protective conductive layer. The system can further include a signal conductive layer on the insulating layer. The system can additionally include a driver layer mounted to the signal conductive layer. The system can also include a second insulating layer above the driver layer. The system can further include a second protective conductive coating layer on the second insulating layer. The system can additionally include one or a plurality of conductive elements disposed between the first protective conductive coating layer and the second protective conductive coating layer to form an enclosure around the driver layer.

Abstract: Various systems benefit from suitable mechanisms and methods for dealing with sensor inaccuracy. For example, various attitude and heading reference system (AHRS) approaches may benefit from systems and methods for providing multiple strapdown solutions. A system can include a plurality of three-axis sensors configured to measure physical quantities (e.g. acceleration, rotational rate), from which can be computed roll, pitch, and heading for a device.

Abstract: One embodiment disclosed herein is related to a device for pointing a radiating element. The device includes an aligned radiating surface; a hinge that is circumferentially mounted to a rear side of the aligned radiating surface, the hinge configured to change azimuth of the aligned radiating surface; and a Tubular Universal joint (TU-joint) having one end coupled to a rear side of the aligned radiating surface and a second end coupled to a base, the TU-joint being configured to change an elevation of the aligned radiating surface. Another embodiment is related to a Tubular Universal-joint (TU-joint). In the embodiment, the TU-joint includes a hollow tube having a first end and a second end; a plurality of slits along the surface of the tube; and a plurality of members between the plurality of slits, each of the plurality of members configured to bear a portion of a load of the TU-joint, wherein the TU-joint is configured to be axially and torsionally stiff while being bendable.

Abstract: Embodiments are directed to systems and methods for selecting appropriate transmission configurations in a mobile ad hoc frequency division duplexing mesh network. In one scenario, a node receives transmission parameters from a neighboring node, where the transmission parameters include an indication of the node's current transmission configuration. The node receives network parameters from neighboring nodes, where the network parameters include connection information describing the node's current network connection to the neighboring nodes. Then, based on the received transmission parameters and the received network parameters, the node calculates a change factor which indicates the desirability of changing transmission configuration.

Abstract: A virtual boresight vector for an antenna array can be calculated. The virtual boresight vector defines the direction an antenna array is pointing and can be used to ensure that angle of arrival measurements are performed with high accuracy. The virtual boresighting process can include positioning a calibration node at two different locations in order to obtain different covariance matrices. With the covariance matrices and based on knowing the angle between the two locations, an angle of arrival node can perform a process to calculate a precise angle between the antenna array and the second location.

Abstract: Various circuits may benefit from suitable protection. For example, certain displays, such as active matrix liquid crystal displays, may benefit from enclosures configured to protect driver circuits from high intensity radiated fields. A system can include a first protective conductive coating layer. The system can also include a first insulating layer on the first protective conductive layer. The system can further include a signal conductive layer on the insulating layer. The system can additionally include a driver layer mounted to the signal conductive layer. The system can also include a second insulating layer above the driver layer. The system can further include a second protective conductive coating layer on the second insulating layer. The system can additionally include one or a plurality of conductive elements disposed between the first protective conductive coating layer and the second protective conductive coating layer to form an enclosure around the driver layer.

Abstract: Various systems may benefit from appropriate thermal protection. For example, various flight recorder systems may benefit from a vacuum protected flight recorder memory. A system can include a memory core of a flight recorder. The system can also include an inner chamber housing the memory core. The system can further include an outer chamber housing the inner chamber with a vacuum between the inner chamber and the outer chamber. The system can additionally include a signal path from avionics equipment to the memory core through the outer chamber and the inner chamber. The system can also include a power path for the memory core through the outer chamber and the inner chamber.

Abstract: Various systems may benefit from appropriate thermal protection. For example, various flight recorder systems may benefit from thermal isolation of a flight recorder memory core. A system can include a memory core of a flight recorder. The system can also include an inner chamber housing the memory core. The system can further include an outer chamber housing the inner chamber with a vacuum between the inner chamber and the outer chamber. The system can additionally include a signal path from avionics equipment to the memory core through the outer chamber and the inner chamber. The system can also include a power path for the memory core through the outer chamber and the inner chamber.

Abstract: Various aircraft systems may benefit from enhancements that increase the reliability of the systems. For example, certain avionics systems may benefit from a distributed aircraft recorder system. A system can include an aircraft recorder on an aircraft. The system can also include a plurality of memory units on the aircraft and remotely located from the aircraft recorder. The memory units may be configured to receive streaming audio and flight data from the aircraft recorder.

Abstract: A threat detection and warning system for a law enforcement officer includes a recording/sensing device, computing device, and device for providing feedback to the officer. The recording device is controlled manually by the user or can be automatically triggered by either an external or internally derived signal. An external signal can be from another similar device already recording, a signal from a vehicle-based device that has been triggered or any other device within range. An internal trigger can be derived by analyzing locally collected data by the computing device. The computing device can analyze data from the recording device looking for threats or situations of interest or persons of interest to the officer. These threats can include weapons or simply an individual acting in a threatening manner. Fast feedback to the officer can be provided by an augmented reality user interface, which can include a display visor, glasses, contact lenses, wrist-worn devices, cell phones, etc.

Abstract: Methods and systems are disclosed for internet isolation and security schemes for a host computer system having an internet isolation system. The internet isolation system may be installed on a laptop computer and/or similar devices at or during the time of manufacture, sale, and/or prior to delivery of the laptop computer. The internet isolation system may be pre-installed with a generic configuration. Upon delivery to a user or enterprise, the internet isolation system may be configured with specific rules tailored to the needs of the user. The configuration may identify which applications or processes should be isolated in the laptop computer using a container and/or virtual machine. The configuration may identify which addresses or sites may or may not be accessed from outside an isolated computing system (e.g., from outside a container or virtual machine). The configuration may configure proxy settings and devices for the isolated computing systems.

Abstract: Systems, methods, and instrumentalities are disclosed for providing configurable and customizable internet isolation and security schemes for a mobile device. A mobile device (e.g., a cell phone, smart phone, tablet, Internet of Things (IoT) device, etc.) may include a processor and a memory. The mobile device may be configured to implement a workspace and an isolated computing environment. The workspace may enable operation of a set of applications (e.g., trusted applications) via a memory space (e.g., a trusted memory space). The isolated computing environment may enable operation of a set of one or more applications (e.g., untrusted applications) via a memory space (e.g., an untrusted memory space). The untrusted applications may include, for example, one or more of an Internet browser, an email application, a document editing application, or a social media application. The untrusted applications may communicate with one or more untrusted network destinations via a network.