Abstract: A LOW RISC (reduced instruction set computer) III microprocessor reduces the number of branches taken during execution of logic, functional, and symbolic programs to increase the efficiency and effectiveness of pipelined execution memory interleave, and reduces the complexity of RISC architectures. The LOW RISC III is a 40-bit, 4-stage pipelined processor which is pipelined with each stage operating synchronously in parallel. Pipeline breaks are reduced by moving partial unification and trail checking into hardware, and eliminating many short branches by conditional execution of the various instructions.

Abstract: A broad-band lumped element ring hybrid is comprised of a .pi. equivalent of a transmission line which is coupled to an electric ground through either a plurality of capacitors or plurality of inductors. The plurality of capacitors which are coupled to ground are coupled together with an inductor, while the plurality of inductors which are coupled to ground are coupled together with a capacitor. A plurality of tank circuits are coupled to the .pi. equivalent to broaden the bandwidth of the ring hybrid. Each tank circuit comprises an inductor and a capacitor.

Abstract: An advanced optical sensor for determining the stand-off distance from a trajecting container to a target utilizes various checks and filters to eliminate false detonations caused by glint and counter-measures. The sensor is comprised of a transmitter, a receiver, and a wave generator. The wave generator generates a unique wave form which is relayed to both the receiver and the transmitter. The light emitted from the transmitted follows a pattern defined by the wave generator. When light is received by the receiver, a synchronous detector coupled to the wave form generator determines if the return light has a pattern correlating with the unique wave form from the wave generator. If so, the associated electric signal in the receiver must pass a predetermined threshold for a predetermined period of time before the sensor will generate a detonate signal.

Abstract: An artificial resistive card which prevents scattering due to diffraction, and which forms impedance transitions from ground planes to antenna apertures or to free spaces, incorporates resistive and conductive layers formed on a substrate. The conductive layer is etched away, either partially or entirely, using integrated circuit technology in order to vary the resistivity of the resistive card. Portions of the resistive layer may also be etched away to expose the underlaying substrate and increase the resistivity of the resistive card. The size and dimension of the resistive and conductive pattern left after etching determines the value of the resistivity and is easily and accurately reproduced.

Abstract: A Digital Pulse Processor (DPP) designed to accept pulsed inputs and produce digital pulse descriptor word (PDW) outputs accepts pulsed signals from three adjacent channelized inputs. The DPP then derives a measurement of pulse amplitude from the peak value in the center frequency channel. The relative peak amplitudes between channels are used to establish aa fine frequency offset. The fine frequency offset is used in conjunction with coarse frequency inputs to compute a pulse frequency estimate. An internal counter generates a time reference for time of arrival (TOA) and pulse width measurements. The TOA and pulse width measurements are based on calculations to establish three dB points on the leading and trailing edges of the pulse. This pulse characterization information is produced in real time at the optimum signal-to-noise ratio, and is independent of incoming amplitude, rise/fall time, and pulse width.

Abstract: A subscriber unit for communicating with a satellite communication system. This subscriber unit receives and transmits digital data from satellites of a satellite communication system. In addition, the subscriber unit self-determines its own position and transmits this position to the satellites of the satellite communication system. In this way, the satellite communication sytem knows the position of each subscriber unit so that communications may be established more efficiently. In addition, the position of the subscriber unit is automatically determined from the received GPS signals and reported to the satellite communication system for other uses such as asset management and search and rescue operations.

Abstract: A dry etch process allows fabrication of very small SAW electrodes (less than 1 micron wide) on LiNbO.sub.3 (lithium niobate) or quartz substrates. In the process, analuminum (Al) layer is disposed on the substrate, and a photoresist layer is applied and exposed in the appropriate pattern. The wafer is then placed in an RIE where the Al is dry etched using a plasma containing chlorine and fluorine. The photoresist is then removed by an oxygen plasma. The oxygen also operates to replace the chlorine ions. By using this process, very precisely shaped electrodes can be formed.

Abstract: A miniature microstrip/cavity oscillator which is mechanically tunable over a wide range of microwave frequencies and maintains high frequency stability over changes in temperature. The oscillator consists of a RF (resonant frequency) determining element, a microstrip circuit board means, and a capacitive coupling probe coupling the microstrip circuit board means to the RF determining element. The RF determining element is constructed of various materials with different coefficients of linear expansion to eliminate expansion and contraction effects due to temperature changes.

Abstract: A bit plane partitioned graphics display system prioritizes large numbers of classes of information prior to relaying the information to the color lookup table. This allows the color lookup table to process only 12 or less bits of information at a time.

Abstract: A bipolar injector structure, similar to a common-base amplifier circuit, is described for use as a unidirectional injector of charge for a charge-transfer device input circuit. This injector structure acts to reduce the input impedance of such devices. A plurality of bipolar injector structures may be implemented on a single ACT device channel, and electrically connected in parallel, to effect a further reduction of input impedance and a further increase in device dynamic range. By employing an input contact structure which allows charge to be injected at more than one point along the length of the channel, without perturbing charge which was injected at some earlier time, a means for forming a transversal filter function can be realized at the input contact structure in addition to that which is achieved at the output contact structure, thus permitting improved ACT device selectivity when operated as a filter.

Abstract: A secure answering machine allows both secure and non-secure information to be recorded by incorporating a digital signal processor (DSP) and both a secure and non-secure RAM. The secure RAM is powered entirely by battery. The battery is then connected to the housing of the answering machine such that when the housing is tampered with, the power from the battery is shut off eliminating all information stored on the secure RAM. The secure RAM is only accessed using an encrypting code.

Abstract: A hermetically sealed switch with multiple switching positions comprises an actuator welded or soldered to a metallic diaphragm. The diaphragm is in turn welded or soldered to the inner walls of the switch housing. The diaphragm is flexible and allows the actuator to pivot about the welded portion. The pivoting motion causes rotation at each end of the actuator. Therefore, if one end of the actuator is rotated, the other end will similarly rotate about while the weld between the actuator and the diaphragm remains intact. The sealed end of the actuator is inserted into a rotor. The rotor has a metal piece which rotates in a circular manner and couples individual contacts to a common electrical ground. Each contact represents a different switch setting. As the metal piece of the rotor couples the contact with the ground, current is allowed to flow between the two and the setting represented by the contact is selected. Electrical leads couple the contacts and the ground to the sealed host device.

Abstract: A microprocessor including a CPU, an instruction memory (ROM) with a sequencer in the CPU that sends out a fetch signal for an instruction, and an address decoder that decodes the fetch signal and sends a signal to the ROM allowing the fetch signal to fetch an instruction if the address is correct.

Abstract: An interlocking release mechanism uses a toothed pinion engaging a toothed rack or gear. The teeth of the pinion are removed in certain areas so as a lock arm, when moved axially from in alignment with a tooth segment to where the tooth has been removed, permits the pinion to be rotated by the rack. The rack and the lock arm must be operated in the correct sequence or the lock arm will be jammed. With the correct sequence of lock arm motion and pinion rotation by the rack or gear, the rack or gear may be moved to achieve the desired release action of the subject invention.

Abstract: High and low pass filters are coupled to a power divider to create a multi-phase hybrid. The high and low pass filters, and the power divider, are all lumped element for compatibility with MMIC circuitry. The power divider may output, to the high and low pass filters, signals having equal or unequal amplitudes. Similiarly, the high and low pass filters may output signals having equal or unequal phases.

Abstract: A double integrating silicon acceleration sensing device which is solid state and micromachined measures the acceleration of an object and determines the distance travelled by that object through its trajectory. The device comprises a hermetically sealed container. The cavity within the container is divided by a flexible silicon diaphragm into two separate cavities, one shallow and the other deep. The two cavities are filled with a fluid which is relatively incompressible over the range of operating pressure. The fluid can only transfer between the two cavities through an orifice. Two capacitor plates form a capacitor within the shallow cavity. One of the plates is secured to a central portion of the diaphragm, and the other plate is secured adjacent to and opposite of the first plate within the shallow cavity. When the accelerometer is at rest, the two plates are separated by a given distance X.sub.g.

Abstract: A safe and arm device for a fuze wherein the safe and arm device does not require stored energy and is activated by a solenoid operating on a pawl mechanism. The pawl in turn pulls a plunger against a detonating chamber in a ratchet-like manner. As the plunger is pulled towards the detonating chamber, a spring stem is compressed thus applying a force against the detonating chamber. Initially, the detonating chamber is locked in a safe position. After the pawl has pulled the plunger into compression against the detonating chamber, a lock on the detonating chamber is released and the detonating chamber pivots into an arm position. This allows a detonator within the chamber to detonate the fuze.

Abstract: An acoustic charge transport device (ACT) alters the intersection of an associated surface acoustic wave (SAW) electric potential with the static depletion potential and the input contact potential to correct the timing variations inherent in conventional ACT devices. The ACT device incorporates a pair of correcting electrodes secured to the ACT channel on either side of an input electrode. The electrodes vary the depth of the electric potential of the SAW which ensures sampling of the input signals at consistent times.

Abstract: A SAW transducer eliminates mechanical energy reflections by using one-quarter wavelength electrodes spaced at predetermined intervals. Dummy electrodes are shifted one-quarter wavelength to cancel energy reflections in the active electrodes. A pair of dummy electrodes is required for each active set of electrodes (the active set comprises one positive and two negative electrodes).

Abstract: A microwave oscillator/power combiner incorporates two microstrip transmission lines, each coupled electromagnetically to an output transmission line. Each of the microstrip transmission lines incorporate active diodes such as IMPATT or GUNN diodes which generate RF energy when acted upon by a DC voltage. The output transmission line is coupled to ground to allow the output end of the transmission line to be adjacent to the active diodes. The two microstrip transmission lines are coupled to a high Q tank circuit through a Wilkinson power divider. The high Q tank circuit is preferably a dielectric resonator. The oscillator may be cascaded to increase power output.