Abstract: An optoelectronic coupling structure, a method of manufacture, and a method of operation are described. The optical coupling structure includes a waveguide that is formed within a device layer of an SOI substrate. A prism is located on a bottom side of the SOI substrate. A BOX layer of the SOI substrate, which is interposed between the prism and the waveguide, serves as a spacer region, which promotes an optical coupling of the prism to the waveguide. By positioning the prism below the waveguide, an optoelectronic IC may more readily accommodate a prism. The prism may be directly fabricated in a bulk layer of the SOI substrate or directly bonded to a bottom side surface of the BOX layer.

Abstract: A wedgelock device is provided that comprises a shaft, and a plurality of thermally conductive wedge segments mounted on the shaft. The wedgelock device has at least one wedge segment that is configured to move at an acute angle with respect to another wedge segment to secure a printed wiring board in the slot of a heat sink chassis. The wedgelock device provides improved thermal performance by creating additional thermal paths from the printed wiring board to the heat sink chassis.

Abstract: Hybrid laminated unidirectional fiber sheets, and assemblies thereof, having utility for impact absorption, ballistic-resistance, penetration-resistance, spall shields, structural composites and for other applications.

Abstract: Wireless devices, systems and approaches or methods having the capability of determining the location of a given wireless device. An example system includes a wireless device that generates at least one pulse as a part of an output signal, and the at least one pulse is captured by anchor devices and used, in a time of arrival approach, to determine the location of the example device. The at least one pulse may be generated during a designated portion of an otherwise normally modulated message. Another example system includes an anchor node that generates a directional output signal, the direction output signal including data indicating its direction, and the directions of output signals from plural anchor nodes when pointed at a wireless device are used to determine the location of the wireless device. Combinations of the pulse and directional antenna systems, devices used within each of these systems, and approaches associated with these systems are also included.

Abstract: A method for compressing a frame-based program image (FBPI) includes identifying common envelope data in the FBPI. Identified common envelope data is removed from the FBPI. At least one instance of an identical repeated frame of the FBPI is identified. A first instance of an identified identical repeated frame is replaced with a pointer to a second instance of the identified identical repeated frame. A method for decompressing a compressed FBPI includes identifying at least one pointer in a compressed FBPI, wherein the at least one pointer comprises a reference to an identical repeated frame of the FBPI. The identified at least one pointer is replaced with the identical repeated frame to which the at least one pointer refers, to generate a half-decompressed FBPI. Envelope data is inserted into the half-decompressed FBPI to generate a full-decompressed FBPI. A computer program product and a system for compressing/decompressing an FBPI are also provided.

Abstract: A method for self-calibrating a sensor can be implemented in a system having a calibration circuit. The calibration circuit has differential circuitry which compares an output signal of the sensor with a predetermined reference signal associated with a reference property. A bias controller increments or decrements the sensor operating bias according to the deviation between the predetermined reference signals and sensor output signal such that the sensor output corresponds to the predetermined reference voltage. The calibration circuit can be embedded in the sensor to provide a self-calibrating sensor. Logic circuitry can be used to form the calibration circuit.

Abstract: A three-dimensional balance assembly is provided. The assembly includes a center shaft, two or more eccentric weighted shafts encompassing the center shaft and a first and a second locking mechanism that lock each weighted shaft into any rotational location. Each eccentric weighted shaft includes at least one eccentric weight. The two or more eccentric weighted shafts are independently rotatable around the center shaft to balance the assembly in two dimensions. The center shaft includes a first and a second bore extending inwardly from each end of the center shaft or a single bore all the way through the shaft. The first and second bores are adapted to receive and secure one or more axial weights and balance the assembly in a third dimension.

Abstract: A process for spinning high molecular weight poly (alph-olefin) filament, particularly ultrahigh molecular weight polyethylene filament, from solution in a volatile spinning solvent with recovery and recycling of the solvent.

Abstract: An exemplary heat exchanger includes a heat exchanger core having a core side fluid space and a cover plate and a substantially U-shaped wall fitted at one end with an inlet header and, at an opposing end, with an outlet header, which in combination with the cover plate, define a shell side fluid space. In this example, the cover plate forms two seals with two opposing sides of the U-shaped wall, forms a seal with the inlet header and forms a seal with the outlet header. Such a heat exchange may be suitable for use as an EGR cooler. Other exemplary devices, methods and systems are disclosed.

Abstract: Flexible body armor formed from flexible composites which have improved knife-stab resistance. The body armor is formed from composites which include layers of a fabric base, formed from high tenacity fibers, and a rubber layer bonded to the fabric base. A thermoplastic bonding layer may be used to bond the fabric and rubber layers together. To provide ballistic resistance, the body armor may also include a ballistic resistant composite of a network of high tenacity fibers.

Abstract: A wireless oil filter sensing system includes an oil filter and a sensing mechanism that is connectable to the oil filter. The sensing mechanism includes one or more acoustic wave sensing elements and at least one antenna that communicate with the acoustic wave sensing element(s). An external interrogation system could excite the acoustic wave sensing element(s) wireless and passively. When the acoustic wave sensing elements are in contact with oil contained in the oil filter, the acoustic wave sensing elements detect acoustic waves associated with the oil in response to an excitation of the acoustic wave sensing elements, thereby generating data indicative of the quality of the oil for wireless transmission through the antenna(s).

Abstract: The invention relates to the addition of ?-methyl styrene, isobutanol and/or isopropanol to reduce vapor pressure, improve k-factor, enhance the solubility of the blowing agent in the premix and/or improve the processing characteristics of polyurethane and polyisocyanurate closed-cell foams prepared with a blowing agent comprising a hydrofluorocarbon selected from the group consisting of 1,1,1,3,3-pentafluoropropane, 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof.

Abstract: A sensor calibration system includes a sensor having one or more sensing components formed on a substrate. A barcode can also be configured or printed from or on the, such that the barcode contains calibration data associated with a calibration of the sensor and the sensing component(s). One or more barcode readers can be provided which can scan the barcode and reads the calibration data associated with the calibration of the sensor and the sensing components thereof, in order to reduce the need for trimming the sensor while also providing for a reduction in associated manufacturing and production costs. A binning methodology can also be implemented for reducing overall sensor manufacturing costs.

Abstract: A personal navigation system including one or more sensors that sense motion of a human and output signals corresponding to the motion of the human and a human-motion-classification processing block that receives sensor data from the one or more sensors. The human-motion-classification processing block includes a Kalman filter processing block, an inertial navigation processing block, and a motion classification processing block. The Kalman filter processing block executes a Kalman filter that provides corrections to the motion classification processing block. The inertial navigation processing block receives input sensor data from the sensors and outputs a navigation solution. The motion classification processing block executes a motion classification algorithm that implements a step-time threshold between two types of motion, identifies a type of motion based on the received sensor data, and outputs a distance-traveled estimate to the Kalman filter processing block based on the identified type of motion.

Abstract: A system for sharing secure keying information with a new device not of a secure wireless network. The keying information may be used for encryption and provided to the new device in a manner which is not susceptible to exposure outside of the secure network. The keying information shared with the new device may be regarded as a birth key. Upon appropriate provision of the birth key, the new device may request with a birth key encrypted message via a communication mode exposed to potential adversaries to be added to the secure network.

Abstract: A method for operating a Phase Locked Loop (PLL) that mitigates radiation event influence on a phase signal. The method is implemented on a PLL having two loop filters. The first filter is a proportional (resistive) loop filter that is operated so that it scales and/or clips the influence out of the phase signal and produces a fine tuning signal. The second filter, on the other hand, is an integral (capacitive) loop filter that dampens the influence and produces a coarse tuning signal. A summing node may then combine the fine and coarse tuning signals and communicate the combined output signal to a VCO. Because the phase signal has been separately filtered, the VCO produces a waveform that is less prone to cause the PLL to report a loss of lock.

Abstract: A method for reducing false alarms for a security system when the security system is programmed to automatically arm the security system. The method reduces false alarms by preventing the security system to auto-arm the system in away mode based upon certain detected events within the premises. The method comprise the steps of determining if a current time equals or is within a predetermined detection period, judging whether at least one of a plurality of motion sensors have detected an event within a protected area during the predetermined detection period, determining if a premises exit signal has been generated within a predetermined period from said detected movement, generating an automatic arm adjustment signal based upon said detected event and the premises edit signal; and executing a modification to the programmed automatic arm based upon the automatic arm adjustment signal. The method will also notify the owner that the auto-arm mode failed.

Abstract: A method and system for autonomous tracking of a mobile target such as a ground vehicle by an unmanned aerial vehicle are provided. The method and system utilize an approach that tracks a mobile ground target by using a ground vehicle model with an ummanned aerial vehicle model, with velocity and acceleration constraints. These real-world constraints ensure that the method is applicable to a general class of unmanned aerial vehicles and ground targets. One or more sensors are employed on the unmanned aerial vehicle, with the sensors having at least one field-of-view sensing cone over the ground. A position and path of the mobile target are monitored through input from the sensors on the unmanned aerial vehicle. The method and system detect and estimate the position and path of the mobile target when the target is inside the field-of-view sensing cone.

Abstract: A bus analyzer system comprises an input buffers module, a data memory module, a control detection module, a link request registers module, and a computer interface. The input buffers module is configured to receive data signals from a plurality of serial data, control, and clock lines at an interface between a physical layer and a link layer of an IEEE-1394 bus device. The computer interface is configured for operative communication with a computer that stores application software having algorithms for carrying out instructions for data interleaving, data formatting, error detection, time tracking, and display. The bus analyzer system allows a user to view all activity at the interface between the link layer and the physical layer within any IEEE-1394 bus device. The bus analyzer system automates the process of capturing each of the high speed serial data or control streams, and reconstructs, displays, and time-stamps the properly formatted 1394 transaction, data, or command signals.

Abstract: A magnetic memory and a method of operating the memory are described. The memory includes memory cells that may each include a magnetoresistive bit. The memory cells may each be coupled to a current driver. Each current driver may be inhibited so that it does not output a current. Inhibiting the output current prevents the memory from being written. By inhibiting some current drivers and not inhibiting other current drivers, the memory may be partitioned into read only and random access portions.