Abstract: A hand-held inductive charger having concentric windings for transferring electrical power across a dielectric medium using magnetic induction. The charger comprises a removable primary coil assembly having a housing with a primary core disposed therein, and a primary winding protruding from the primary core. An electrical cable coupled to the primary winding that is adapted to couple power thereto from a power source. A secondary coil assembly having a receptacle housing is also provided, and a secondary core is disposed in the receptacle housing, and first and second concentric secondary windings are disposed in the secondary core. The first and second concentric secondary windings are coupled to a battery of an automobile. The first and second concentric secondary windings have a gap therebetween that is adapted to receive the primary winding therein. The primary and secondary coil assemblies form a transformer when their respective windings are mated.

Abstract: A hologram exposure system for simultaneously exposing a plurality of holograms in a holographic recording layer, including first optical elements for providing a first reference beam and a first object beam that interfere in the holographic recording layer and are coherently matched relative to each other, and second optical elements for providing a second reference beam and a second object beam that interfere in the holographic recording layer and are coherently matched relative to each other but are coherently mismatched relative to the first reference and object beams, whereby the crosstalk holograms formed by interference of (1) the first reference beam with the second object beam, (2) the first object beam with the second reference beam, (3) the first object beam with the second object beam, and (4) the first reference beam with the second reference have reduced efficiencies.

Abstract: A weatherized curb-side battery charging system that provides a mechanism for transferring electrical power to an electric vehicle to recharge its battery. The battery charging system includes a housing that is disposed on a wall or is slidably attached to a track mounted to a ceiling, for example A retractable charging device is coupled to a power supply and mates with a receptacle device disposed in the vehicle. A variety of charging devices that may be employed in the battery charging system are disclosed. Electronic circuitry controls power supplied to the vehicle from the power supply of the charging system. In addition, an interface circuit is provided that allows a user to enter a code to use the system and that provides an identification for billing purposes, or a credit card type key that activates the system and performs the same functions. A fan is provided for cooling purposes that causes an air flow through the system.

Abstract: A hologram decal including a hologram layer having first and second surfaces, a first polymer layer secured to the first hologram surface, a second polymer layer secured to the second hologram surface, a pressure sensitive adhesive layer disposed on the non-hologram side of one of the first and second polymer layers, and a release liner covering said pressure sensitive adhesive layer, and techniques for making the hologram decal.

Abstract: This invention discloses an antenna element (12) or an array of antenna elements (52) for use in multifunctional systems which exhibits wide bandwidth, small size, polarization diversity and conformality. In one preferred embodiment, an array of circular conductive patches (56,58) are formed on a dielectric substrate (54) in which adjacent patches are formed on opposite sides of the substrate (54). Each of the opposite conducting patches (56,58) are configured to form a dual flared slotline such that an electric field created between the two conductive patches (56,58) will exhibit a wide range of impedance matching to free space. By exciting the conductive patches (56,58), radiating electromagnetic waves having a polarization with respect to the orientation of the slotlines is produced. By this, a single array of antenna elements (52) can be used in a multifunctional system.

Abstract: The cold plate is a multiple layer structure with an inlet manifold for pressurized coolant liquid. The manifold is covered by a nozzle plate which directs liquid coolant jets against the mounting plate. The mounting plate carries the device to be cooled. The high velocity liquid jets impinge directly on the mounting plate to minimize the boundary layer to enhance heat transfer from the mounting plate to the liquid coolant.

Abstract: A microwave-absorbing material composed of blends of polar icosahedral molecular units with a variety of host matrices, or with polymers with the units covalently bonded in a pendant manner to the polymer chain. Both blends and polymers must impart a high degree of orientational mobility to the units so that they can absorb microwave radiation. These materials employ orientationally mobile, polar icosahedral molecular units as the source of dielectric loss at microwave frequencies. Examples of these units are the polar carboranes (ortho- and meta-carborane), polar carboranes with electronegative and/or electropositive substitutes, and polar "buckminsterfullerenes.

Abstract: A radar system including a Kalman filter that processes radar return signals to produces position, velocity, acceleration, gain and residual error output signals, and a post-processor that processes these signals in accordance with a track filter bias estimation procedure. The procedure computes bias estimates and revised position, velocity and acceleration output signals that are corrected for bias error. The revised output signals are coupled to the radar system to track a target. The track filter bias estimation method computes bias estimates in accordance with the relationship: ##EQU1## where Res, K.sub.1 /K.sub.2, R and T denote the residual, gains, range, and filter cycle time, respectively, and the tilde indicates a sample averaging. The present invention also provides for improved maneuver detection by implementing an acceleration estimation algorithm used to track a maneuvering target. The present invention is applicable in all fields and areas where estimation using Kalman filters is used.

Abstract: Two or more integrated circuit or memory chips (64-66, 104, 106-108, 116-118, 122-126) are stacked on a circuit substrate (72, 100) or a printed-wiring board in such a manner that the planes of the chips lie horizontally, rather than vertically, on the substrate or wiring board. The chips are preferably interconnected along all of their edges (68) and thence, preferably by ribbon bonds, to the substrate or wiring board. The thus assembled arrangement is hermetically sealed by coatings of passivation and encapsulant. Such chips (25) are oversized, as distinguished from chips conventionally diced from wafers. Specifically, each chip is larger than an individual wafer circuit (18, 20), that is, each wafer portion (24) which is selected to be formed into a chip has a size that is larger than the individual wafer circuit which it incorporates, thus overlapping adjacent circuits.

Abstract: A transmit/receive element having a transmit/receive circuit that includes a variable frequency transmit phase lock loop and a variable frequency receive phase lock loop, and an output amplifier that receives a modulated transmit signal from the transmit phase lock loop for driving an antenna element. The transmit phase lock loop receives a feedback signal which is (a) the modulated transmit signal during receive intervals and (b) the output of the output amplifier during transmit intervals, such that the transmit phase lock loop is controlled by a feedback signal at all times.

Abstract: A differential epicyclic power train comprising a differential epicyclic gear train coupled to two or more motors. The differential epicyclic gear train sums the inputs from the motors such that the output speed is a linear function of the input speeds of the respective motors. A brake/clutch assembly may be coupled between one or both of the motors and the differential epicyclic gear train. Various combinations of brake and clutch assemblies, and high and low power motors may be employed to achieved differing output speeds and power levels. The present invention optimizes the efficiency of the single output of the differential epicyclic gear train over the speed range of the motors. The efficiency of the power train is maximized by maximizing the amount of time each motor remains in higher efficiency regions of operation by limiting the speed range of a selected one of motors. The resulting efficiency is greater than the efficiency that is produced by a single high power variable speed motor.

Abstract: A process for cancelling the effects of noise jamming in a radar system having a dual-polarization monopulse antenna, a computer processor, and target detection algorithms, wherein the noise jamming produced by a hostile electronic countermeasure on a target is cancelled so as to detect the target in the optimum detection channel. The process consists of the steps of receiving signals from multiple monopulse polarization aperture combinations of the radar antenna, sampling the signals from the radar antenna, digitizing the sampled signals, calculating combination values based upon the samples of the digitized signals, computing several potential target detection channel signals based upon the combination values and samples of the digitized signals, applying the detection channel signals to the computer processor and selecting the optimum detection channel signal for detection of the target using the computer processing whereby the signal is then applied to target detection algorithm of the radar processor.

Abstract: A digital multiplier that includes a combinatorial ripple carry adder for adding the sum and carry components of a first operand represented in sum and carry form to produce a converted first operand represented in standard binary form, and a combinatorial array multiplier for multiplying a second operand represented in standard binary form with the converted first operand to produce a product represented in sum and carry form.

Abstract: A virtual image display system for displaying a relatively large virtual image to a user derived from a relatively small image source. A lens group is provided for amplifying an image provided by the image source. A plurality of reflecting elements are provided for magnifying the image provided by the lens group and for displaying the relatively large virtual image. Several embodiments are provided that include on-axis and off-axis reflecting versions, and a holographic virtual image version. Conventional lenses and reflecting optics are used to provide the on- and off-axis versions of the system, while a holographic reflecting element is used to provide a holographic virtual image. A window element may also be employed to minimize ambient reflection viewed by the user and eliminates ambient reflection to reduce the user's eye fatigue. The display system improves a user's viewing comfort by positioning the image at a distance matching the visual requirements of the user's eye.

Abstract: Processes for diagnosing boundary scan observed data produced pursuant to boundary scan testing of interconnected circuit devices having three-state bidirectional scan cells. A first set of observed data is produced by controlling each device individually to drive the I/O pins of the device pursuant to a set of test patterns and to scan out observed values, while the three-state bidirectional scan cells of the other devices that are in the high impedance state. The observed values for each device are diagnosed by a process that analyzes the observed data and refers to a pin connection list to isolate as to the pins of each device stuck-at faults, shorted pin faults, open faults between pins, and hardwire faults. A second set of observed data is produced by controlling each device in turn to be a driving device for driving its I/O pins to a first logical state, while the remaining devices are controlled to have their scan cells in the high impedance state and to scan out the signals observed on their I/O pins.

Abstract: A system for locating a fatigue point on a structure (10) employing a smart sensor patch (12) having three triangularly adjacent acoustic sensors (40 a,b,c). The smart sensor patch (12) has a local processor (34) associated therewith, which triangulates the location of the fatigue point.

Abstract: A digital data propagation delay margin monitoring circuit that includes (a) a digital data propagation unit having a send flip-flop, a combinatorial delay, and a receive flip-flop; and (b) a margin detection circuit having a test flip-flop that receives the same input as the receive flip-flop and is configured to have a set up time margin or a hold time margin that is less than the set up margin or hold time margin of the receive flip-flop by a predetermined amount, depending upon which margin is being monitored. The outputs of the receive flip-flop and the test flip-flop are compared by a comparison circuit which provides an indication of when the outputs of the receive flip-flop and the test flip-flop are different, which indicates that the monitored margin of the receive flip-flop has been reduced to a predetermined margin or less.

Abstract: A shunt coupled array of slots in a waveguide broadwall, wherein the slots are defined by a punch operation which leaves a tab connected at one side of the slot. The slot side to which the tabs are connected is alternated. The tabs extend downwardly into the waveguide and provide a means for exciting the slots without requiring the longitudinal slots to be alternatively offset. Thus, the invention provides a method of fabrication which permits elimination of the slot offsets, while at the same time is lower in cost than conventional methods of creating slot openings arrays. Higher antenna gain results from a given aperture when slot offsets are eliminated and the slots are truly located along straight lines in rows and columns.

Abstract: A hologram structure for use in a holographic center high mounted stoplight system for a vehicle. The hologram structure includes a hologram layer having a plurality of single grating holograms formed in therein, each single grating hologram configured to diffract light at a respective predetermined angle.

Abstract: Multiple layers or holographic exposures and methods for preparing multiple layers of holographic exposures are described. The multiple layers of holographic exposure combine to form holographic stacks and are fabricated from layers of exposed and processed photosensitive recording films, each of which has at least one independently recorded hologram. The holographic stacks are useful for providing wide bandwidth holograms and holograms having superimposed images.