Abstract: A channelized filter design for partial band reconstruction having high dynamic range requirements. The analysis filter and synthesis filter constraints permit high performance signal detection with an alias free signal recombination capability for signals that span multiple frequency bins. The filter bank allows the use of a single wideband asset to provide for data channelized for detection processing with the ability to recombine one or more adjacent frequency bins into a wider bandwidth baseband time domain data stream suitable for exploitation processing. Use of an efficient partial band reconstruction mechanism allows signal reconstruction using only the frequency subchannels that pertain to the signal of interest that is to be copied. The filter design mechanism separates the specification of the analysis filter to support signal detection in environments of high dynamic range. The signal reconstruction (synthesis) filter uses fewer bins and allows a higher order filter.

Abstract: A stagger tuned meanderline loaded antenna is disclosed. The antenna meanderlines are configured for manipulating the antenna's current null, which enables a combination of loop mode and monopole mode current distribution. The antenna quality factor can be adjusted substantially independent of antenna gain to achieve an extended Chu-Harrington relation.

Abstract: In a semiconductor device comprising photo-transceiver arrays constructed on silicon substrates with underlying supporting CMOS circuitry in the substrate interfacing with a source of software control, a method is provided for mapping and reconfiguring the global data transfer channel map of optical interconnect lines and intra-nodal routing links. An initial mapping procedure identifies all possible connections. The silicon circuitry provides for sensing optical connections and light levels, for testing or sensing of routing links, and for controlling gain and power, as well as forming and reforming routing links between detectors and emitters. A rule-based routing, mapping and re-mapping scheme, utilizing over-sampling techniques and effectuated by the silicon circuitry and software, accommodates limited misalignment of mating photo-arrays, faults occurring in data transmission channels after the initial mapping, and provides additional security, performance and power management capabilities.

Abstract: An acoustic transducer design having a slotted oval-shaped shell and active transducer elements located on the inner surface of the shell is disclosed. The design provides a high power, ultra-low frequency oval projector having a number of applications, including underwater seismic prospecting and fish mitigation.

Abstract: An integrated piezoelectric ultrasound array structure configured to minimize the effects of differential thermal expansion between the array and the integrated circuit and to improve the mechanical and acoustical integrity of the array. The transducer array may have an interposed thinned supporting substrate and is matched to the integrated circuit substrate for thermal expansion so as to retain mechanical integrity of the array/IC bond within the working temperature range. Transducer elements are laterally isolated acoustically and as to thermal expansion by air or other acoustically attenuating medium of lower elastic modulus material between the elements. Acoustical effects are vertically acoustically isolated with capacitive coupling and small area solder bumps relative to wavelength, and further laterally acoustically isolated by thin supporting substrates relative to wavelength, including thinned semiconductor integrated circuit substrates.

Abstract: The present invention is a system combining motion capture technology and a motion platform with runtime interaction in a real-time feedback loop to provide a physical and virtual environment that has many applications, particularly in the rehabilitation area. The operator and user have runtime control of the system, and the data from the platform and the capture system are processed faster than real-time to generates new data sets which are then re-introduced into the system. A virtual reality environment is introduced and seamlessly interacts with the motion capture process and the motion platform operations to immerse the user in the dynamic physical and virtual environ.

Abstract: Techniques enabling electronic control of propagation constant associated with meanderline loaded antennas and phased arrays are disclosed. An activation layer can be electronically stimulated to change its characteristics (e.g., capacitance or shape) so as to enable the control independent of antenna operating frequency.

Abstract: Optical bench mounting and thermal management techniques are disclosed that enable increased dimensional stability. Output power, beam divergence, and boresight stability of the laser are thus maintained. A separate optical bench is pseudo semi-kinematically mounted to a chassis. A number of heat dissipation or heat management techniques can be utilized for heat generating components on the bench. For example, hot components (e.g., laser crystals) can be mounted on a cryo-cooler or other heat-pump, or attached to the chassis instead of the bench. Thermal loads can be balanced across the thickness of the bench to minimize bowing of the bench, and thermal strapping can be used to conduct heat away from hot components mounted on the bench to other locations (e.g., chassis or elsewhere) where the heat can be more efficiently handled. Thermal insulators and thermal damming can be used to inhibit heat flow from components into specific bench locations.

Abstract: A continuous optical calibration system for a galvanometer scanner. The system maintains one or more fiducial position references in each axis, independent of the normal position detector circuit. An optical reference position monitor circuit triggers a calibration signal when load position coincides with a reference position, whereupon the measured position of the position detector and then current look up table is compared to the known reference position, and an error correction is generated and applied to the look up table. The optical monitor circuit includes a rotor rigidly attached to the load shaft so as to rotate between a light emitter and detector. A thin slit in the rotor permits passage of a highly collimated light beam to the detector only when the slit is aligned between the emitter and detector, which occurs only when the load is at or passing through the reference position.

Abstract: A system to facilitate alignment of an optical connector to respective optical channels of one or more optical arrays. Optical planar arrays having multiple optical emitters and multiple optical detectors of a multi-channel optical link are aligned by employing supporting circuitry and software that controls the optical devices, enabling all receivers, turning on the transmitters sequentially, and recording the optimal transmitter/receiver pairs. Another feature of the invention is the aspect of redundancy, wherein the system establishes a record of spare emitters and spare detectors that are used when the selected transmitter receiver pair degrades or fails. The techniques of the present invention also provide a unique multiplexer/demultiplexer arrangement for a single wavelength channel of emitters and detectors.

Abstract: A canned motor comprising a rotor assembly having at least 6 poles, a stator assembly, and an isolating can separating the rotor assembly and stator assembly. The canned motor an L3/D4 ratio of less than 50, and first and second frictionless bearings positioned on the rotor shaft.

Abstract: A transducer probe has a fully populated, integrated, matrix array of acoustical transducers for ultrasound imaging. The transducer arrays include tiled subarrays of transducers which may be switched (e.g., in real-time) between vertical and horizontal modes, and may further be configured to perform a first level of transmit and receive beam forming functionality with either horizontal or vertical scanning. Example applications include medical imaging, materials testing, and sonar systems.

Abstract: An apparatus for mounting optical components and adjusting its orientation with respect to the optical axis of other components in an optical system. In one embodiment, the multi-axis gimbal mounting apparatus utilizes a single piece main structure having a pair of live hinges and a locking feature that enhances two kinds of stability. First, the adjustable elements of the mount remain in the intended position when the locking mechanism is actuated with minimal cross-talk between the locking features and the adjustment features. Second, the adjustable elements of the mount remain in the intended position when the mount or the system in which it resides is exposed to extreme environmental perturbations of vibration, temperature, shock, and acceleration. This mount is suitable for use in military laser systems, cryogenic systems, and other industrial optical instruments subjected to harsh environments such as aircraft, ship, and battlefield deployed devices.

Abstract: The invention in the simplest form is a technique to provide for sharing of power and signal pins on a motor controller. The switching simply follows the magnetic switching detected by the Hall sensor as the motor magnet passes and uses a diode or resistor instead of a switch. The power transistors are respectively connected to a voltage regulator through a diode or resistor and there are no switches in the circuit. To avoid simultaneous switching, one embodiment is designed by turning “On” slowly and turn “Off” quickly. Slow “On” is accomplished by using a resistor/capacitor (RC) delay such that the gate drive ramps slowly. Fast “OFF” is obtained by discharging the gate capacitance with an N-CH transistor that bypasses the RC delay.

Abstract: An Ethernet, or more generally any packetized network system, remote management device and system operable via Ethernet connections according to non-Ethernet message instructions presented during the active idle signal period, e.g. during the inter-packet gap (IPG), which are separated from the Ethernet signalling before detection. A locally managed device includes a physical layer interface adapted to receive a secondary signal which is encoded to provide a corresponding signal while conforming to the active idle and minimum IPG requirements, and is received by a remote device managed according to the encoded signals provided from the local device during the IPG. Further embodiments provide multiple (serial) nesting of such remote devices along the Ethernet path, with the instructions to and data from the most distant such remote devices forwarded through intermediate remote devices according to the present invention.

Abstract: A dual mode seeker for intercepting a reentry vehicle or other target is disclosed. In one embodiment, the seeker is configured with an onboard 3D ladar system coordinated with an onboard IR detection system, where both systems utilize a common aperture. The IR and ladar systems cooperate with a ground based reentry vehicle detection/tracking system for defining a primary target area coordinate and focusing the IR FOV thereon. The IR system obtains IR image data in the IR FOV. The ladar system initially transmits with a smaller laser FOV to illuminate possible targets, rapidly interrogating the IR FOV. The ladar system obtains data on each possible target to perform primary discrimination assessments. Data fusion is employed to resolve the possible targets as between decoys/clutter and a reentry vehicle. The laser FOV is expandable to the IR FOV. Robust and reliable discrimination is obtained at high altitudes.

Abstract: The present invention is a system and method to provide customizable animation. A motion capture database houses a library of human motion that is accessible via a client-server connection. Users are allowed to select motion sequences and alter these motions in real time over a networked connection to create new and original works of art. In one embodiment, blender software is used to interpolate and extrapolate from existing library data to create the new and original motion sequences, that are developed to comply with bio-mechanical laws, physics and human anatomy. In another embodiment, users can bypass the bio-mechanical laws, physics and human anatomy and create mutations of the motion capture data. The present invention not only allows real time animation manipulation, but it is accomplished over a network by using a client application and accessing the motion capture library and blending algorithm.

Abstract: A cable, adapter, or converter device is disclosed that enables a peripheral device (e.g., external display) normally connected only through a non-USB port to communicate with a host computer via a USB port in addition to its non-USB port. DDC-formatted signals from the peripheral device are converted to the appropriate format for input through the USB port, and signals transmitted to the peripheral device from the USB port are converted to the format recognizable by the external peripheral, allowing access to peripheral features via the host system.

Abstract: The present invention is for a thermally controlled package for oscillators, particularly evacuated miniature surface acoustical wave oscillators (EMSO) devices. In a preferred embodiment the surface acoustical wave device is bonded directly to a heated substrate. The package is evacuated to improve temperature characteristics. A temperature heater, sensor, and control controller are utilized to maintain the internal package temperature above ambient. In one embodiment there is an additional substrate layer that house components that are not sensitive to temperature with interconnects electrically connecting the heated substrate and the additional substrates.

Abstract: The present invention is a hollow article with an integral impact absorbing rib and the method of manufacturing the same. The apparatus is a hollow article made of thermoplastic resin and integrally formed by blow molding, comprising a first wall and a second wall confronting across a spacing. There is an integral rib between the first wall and the second wall, wherein the integral rib comprises a flat rib between the walls and one or more hollow ribs adjacent to each of two side ends of the flat rib. The impact absorbing rib is disposed at intervals and in an impact action direction. The rib is uniform in shape, dimensions and wall width, and free from reduction of wall width of the inner rib, yet possessing proper structural support and mechanical strength, and excellent in impact absorbing performance.