Abstract: Methods for configuring and utilizing a configurable data guard (CDG) implemented on a hardware-based programmable logic device are disclosed. The CDG may include integrated circuit portions comprising a plurality of arrays of generic comparison operations and a plurality of arrays of generic action operations. The CDG may receive a data guard configuration. The CDG may perform an authentication and integrity check procedure on the received data guard configuration. The CDG may configure a plurality of guard primitives based on the data guard configuration. Each guard primitive may be configured from at least one generic comparison operation and at least one generic action operation. The guard primitives may be used to enforce the complex data guard rules that correspond to the data guard configuration.

Abstract: Embodiments of the present disclosure are directed to infrared detector devices incorporating a tunneling structure. In one embodiment, an infrared detector device includes a first contact layer, an absorber layer adjacent to the first contact layer, and a tunneling structure including a barrier layer adjacent to the absorber layer and a second contact layer adjacent to the barrier layer. The barrier layer has a tailored valence band offset such that a valence band offset of the barrier layer at the interface between the absorber layer and the barrier layer is substantially aligned with the valence band offset of the absorber layer, and the valence band offset of the barrier layer at the interface between the barrier layer and the second contact layer is above a conduction band offset of the second contact layer.

Abstract: A galvanically isolated DC/DC converter includes a first and a second side converter circuit coupled between a pair of first side DC terminals and a pair of second side DC terminals, respectively. The first side converter circuit has a first and a second switching element, each including a switch and a diode. When the DC/DC converter is in power transfer operation from the second side DC terminals to the first side DC terminals, the second side converter circuit alternates between two power transfer states. A conductive state of the diode of one of the first and second switching elements is the result of one of the two power transfer states. The first side converter circuit is controlled such that the switch of the respectively other of the first and second switching elements is closed for an adaptation interval before the one of the two power transfer states starts.

Abstract: A battery-powered system comprising: 1) a housing adapted to contain electro-mechanical machines; and 2) an apparatus disposed within the housing. The apparatus comprises: i) a battery configured as an annular cylinder having an inner diameter, an outer diameter, and a length; and ii) a cylindrical device disposed within a cavity formed by the annular cylinder of the battery. An outer diameter of the cylindrical device is substantially the same as the inner diameter of the battery and the cylindrical device has a length substantially equal to the length of the battery.

Abstract: Systems and methods for cancelling interference from a received signal in order to properly detect a signal of interest are disclosed. A combined signal of interest plus interference signal may be received. A copy or sample of the interference signal may be determined. The interference signal and the combined signal of interest plus interference signal may be converted to the optical domain. The interference signal may be optically phase shifted by ?180 degrees, which may result in an optically inverted interference signal. The optically inverted interference signal may be variably optically attenuated and/or variably optically time delayed, for example based on a detected output power of an optical subsystem of the interference cancellation system. As a result, interference cancellation of the interference signal from the combined signal of interest plus interference signal may be achieved, resulting in 50 dB or more of cancellation of the interference signal.

Abstract: An electronic assembly and device are provided. The electronic assembly includes a first circuit board, with PCB pads located adjacent to an edge of the circuit board, and a corresponding plurality of contacts, each contact soldered to one of the PCB pads. Each contact has a first portion, soldered to the PCB pad, and a second portion that extends past the edge of the circuit board and forms a leaf spring. The leaf spring compresses when placed in contact with a PCB pad of a second circuit board, where the PCB pad is substantially coplanar with a surface of the second circuit board. A restoring force of the second portion maintains contact between the second portion and the PCB pad of the second circuit board. The contact forms an electrical connection between the PCB pad of the first circuit board and the PCB pad of the second circuit board.

Abstract: Embodiments of the present disclosure are directed to infrared detector devices incorporating a tunneling structure. In one embodiment, an infrared detector device includes a first contact layer, an absorber layer adjacent to the first contact layer, and a tunneling structure including a barrier layer adjacent to the absorber layer and a second contact layer adjacent to the barrier layer. The barrier layer has a tailored valence band offset such that a valence band offset of the barrier layer at the interface between the absorber layer and the barrier layer is substantially aligned with the valence band offset of the absorber layer, and the valence band offset of the barrier layer at the interface between the barrier layer and the second contact layer is above a conduction band offset of the second contact layer.

Abstract: Diode barrier infrared detector devices and superlattice barrier structures are disclosed. In one embodiment, a diode barrier infrared detector device includes a first contact layer, an absorber layer adjacent to the first contact layer, and a barrier layer adjacent to the absorber layer, and a second contact layer adjacent to the barrier layer. The barrier layer includes a diode structure formed by a p-n junction formed within the barrier layer. The barrier layer may be such that there is substantially no barrier to minority carrier holes. In another embodiment, a diode barrier infrared detector device includes a first contact layer, an absorber layer adjacent to the first contact layer, a barrier layer adjacent to the absorber layer, and a diode structure adjacent to the barrier layer. The diode structure includes a second contact layer.

Abstract: A method for acquiring and tracking an in-flight or airborne target using an antenna is provided. In the acquisition process, the antenna is rotated to collect RF power data. The location of peak RF power is determined and the antenna is pointed to that location. The antenna may then undergo a search pattern on either side of that location to detect a specified drop in RF power and a modem on which to lock. In the tracking process, an algorithm allows the antenna to track the target in a pure RF mode, a GPS-based open loop pointing mode or a hybrid mode. The tracking may automatically switch between the pure RF mode and the hybrid mode, depending upon whether GPS data is available from the target.

Abstract: Ground-accessing elevator systems and methods are provided for transporting personnel between the ground level and one or more decks of multi-level vehicle such as a fixed-wing aircraft. The vehicle elevator systems and methods may be implemented using a multi-track guide rail system configured to guide an elevator car between the ground and two or more levels within a vehicle. The multi-track guide rail system may include an intra-vehicle track fixed to the vehicle structure and configured to guide the elevator car between decks of the vehicle, and a separate deployment track may be configured to telescope downward from the intra-vehicle guide rail track to guide the elevator car during deployment to the ground from the vehicle.

Abstract: A holographic sight is provided having a housing that includes a plurality of holograph sight components. A laser diode mounted in the housing is configured to emit a laser light beam. The light beam is transmitted to an integrated diffraction grating and filter unit which includes a grating and a filter in a single device. The diffraction grating has a grating surface for diffracting the light beam and also diffracting unwanted ambient light transmitted into the housing. The filter is an optical filter contacting at least a portion of the grating. The optical filter is adapted to absorb at least one wavelength of the ambient light to inhibit the ambient light from diffracting into a visible spectrum that might otherwise be viewable to a user looking into the holographic sight.

Abstract: A configurable antenna may include a circular horn array comprising a plurality of horn antennas, a configurable waveguide in a center of the circular horn array, and a plurality of actuators. The configurable waveguide includes a plurality of retractable triangular wedges, with one side of each wedge oriented to one of the plurality of horn antenna and a corner oriented toward a center of the waveguide, wherein a circle defined by each of the corners oriented toward the center of the waveguide defines a first circumference. The configurable waveguide further includes a plurality of movable tuning rods arranged in a circle defining a second circumference, the second circumference being smaller than the first circumference, said movable tuning rods further arranged such that the movable tuning rods are between the corners the corners oriented toward the center of the waveguide.

Abstract: A thin film mirror, comprising: a mirror shell (605); a reflective film (601) stretched between forming structures (603) provided on said mirror shell and reflective film being arranged such that they form a chamber which is capable of being placed under at least partial vacuum; the mirror shell having an inner surface which forms an inner wail of said chamber, wherein the mirror shell is a moulded part where its inner surface is a controlled surface.

Abstract: Systems and methods for cancelling interference from a received signal in order to properly detect a signal of interest are disclosed. A combined signal of interest plus interference signal may be received. A copy or sample of the interference signal may be determined. The interference signal and the combined signal of interest plus interference signal may be converted to the optical domain. The interference signal may be optically phase shifted by ?180 degrees, which may result in an optically inverted interference signal. The optically inverted interference signal may be variably optically attenuated and/or variably optically time delayed, for example based on a detected output power of an optical subsystem of the interference cancellation system. As a result, interference cancellation of the interference signal from the combined signal of interest plus interference signal may be achieved, resulting in 50 dB or more of cancellation of the interference signal.

Abstract: A content addressable memory (CAM) system can include a comparator core in which all of the keys of the CAM are embedded in comparator blocks. A search key can be provided to each of the comparator blocks, which can compare the search key to its embedded key and determine whether the search key matches the embedded key. The comparator blocks can be organized into paged sets in the comparator core such that only one of the comparator blocks in each paged set is selected and compares its embedded key to the search key at any given time. The comparator block selected in each paged set can be incremented until the search key has been compared to the keys embedded in all of the comparator blocks of the comparator core.

Abstract: An aspect of the disclosure relates to an OLED display compatible for operation in both a day mode and a night mode and methods of operating such a display. In one embodiment, a display comprises a screen, a plurality of sub-pixels including red, green, blue and red-orange pixels. The display also comprises an arrangement scheme for the sub-pixels.

Abstract: Systems and methods are disclosed for locating signal wave (SW) emitter/s using at least one moving signal collection platform. The disclosed systems and methods may be employed in one embodiment to estimate the signal energy transmitted from a grid of locations (such as a map) using collected IQ data (or other raw data representation such as IQ data covariance matrix), and without requiring computation of any intermediate geolocation-observable measurements (such as angle-of-arrival, direction-of-arrival, etc.). In a further embodiment, the disclosed systems and methods may be implemented in a blind manner (i.e., transmitted emitter signal/s are unknown and processed blindly) to geolocate SW emitters using a single SW signal collection platform (e.g., at relatively large standoff distances in some implementations) without relying on a known signal modulation or operation of multiple simultaneous SW signal collection platforms.

Abstract: An LDPC decoder includes a check node processor. The check node processor is configured to implement an n-degree check node, where n is a predetermined number. The degree of a check node is the number of edges coupled to the check node. The LDPC decoder also includes a plurality of n time division multiplexers coupled to the check node processor to couple different edge connection input values to the check node processor at different times so as to allow the check node processor to be time division multiplexed for use in implementing different check nodes with the same check node processor. Each of the multiplexers is configured to provide no more than one edge connection input value to the check node processor at any given time. Each edge connection is used to implement an edge into a check node.

Abstract: A system for performing encryption and/or decryption may include a parent cryptographic device. The parent cryptographic device may be configured to receive a first cryptographic key. The parent cryptographic device may be configured to determine one or more session keys based on the first cryptographic key and/or internally generated random data bits. The parent cryptographic device may be configured to insert the one or more session keys onto one or more child cryptographic devices that are operably connected to the parent cryptographic device. The one or more child cryptographic devices may be configured to receive the one or more session keys from the parent cryptographic device, and perform one or more of encryption or decryption of communications exchanged with another child cryptographic device of the one or more child cryptographic devices. The one or more child cryptographic devices may perform encryption/decryption after separation from the parent cryptographic device.

Abstract: Disclosed herein are methods and systems for configuring and using one or more block ciphering techniques in order to encrypt/decrypt serial data streams while maintaining cryptographic synchronization and attempting to minimize the amount of overhead introduced into the stream. The techniques disclosed herein may be used to encrypt and decrypt serial data streams using a block cipher in a manner that can be substantially transparent to the devices involved in the serial communication session. For example, the serial user data may be left unframed by the encryption device while monitoring for opportunistic times to transmit framed cryptographic synchronization information during periods of relative inactivity in an asynchronous serial data stream. A cryptographic device implementing the techniques described herein may be configured to implement one or more of an encryption device or a decryption device.