Abstract: The present invention relates to a device and method that digitally replicates the analog processing that is normally associated with an instantaneous frequency measurement device. Specifically, the present relates to a digital frequency measurement device comprising: a filter, where the filter receives an input RF signal and transmits an output signal centered around a desired frequency; a limiting amplifier downstream of the filter, where the amplifier receives and amplifies the output signal; a deserializer downstream of the amplifier that continuously samples the output signal from the limiting amplifier; and a digital frequency measurement processor (DFM), where the DFM receives data at a rate of 1/16 of the deserializer sample rate. The DFM transforms the data into multiples stages that are combined in order to produce an estimate of the input signal, where the DFM is implemented through a digital processing device.

Abstract: The present invention relates to an optical modulator array that uses stepped-well continuously tunable quantum well infrared modulators in order to accomplish electronic beam modulating. The present invention involves a coherent optical beam modulating device to steer an optical beam comprising: an optical modulator array, where said optical modulator array includes a stepped quantum well doped with electrons, wherein the modulator array affects operates as at least one of a phase modulator and a light intensity modulator base upon a voltage bias applied across the modulator array. The continuous tunable quantum well modulator includes asymmetry of the unit cell that allows transitions from the ground state to the second excited state that are normally forbidden in symmetrical quantum well infrared photodetectors.

Abstract: A method and system for training an audio analyzer (114) to identify asynchronous segments of audio types using sample data sets, the sample data sets being representative of audio signals for which segmentation is desired. The system and method then label asynchronous segments of audio samples, collected at the target site, into a plurality of categories by cascading hidden Markov models (HMM). The cascaded HMMs consist of 2 stages, the output of the first stage HMM (208) being transformed and used as observation inputs to the second stage HMM (212). This cascaded HMM approach allows for modeling processes with complex temporal characteristics by using training data. It also contains a flexible framework that allows for segments of varying duration. The system and method are particularly useful in identifying and separating segments of the human voice for voice recognition systems from other audio such as music.

Abstract: A method and system begin at a random node of a trellis model having a set of at least two axes, wherein one axis corresponds to time and a second axis corresponds to frequency, a set of M states, corresponding to a set of all possible frequencies that may be transmitted by the system, and branches leaving each state, that terminate at allowable transmit frequencies for a next frequency hop. The number of branches leaving each state is dependent on the number of encoded bits per hop. Next, B bits of data are passed to a buffer, where B is the number of bits that will be transmitted per frequency hop. The method and system then combine the B bits of data with information for previously selected frequencies to select a current frequency, transmit the selected frequency, and feedback the currently selected frequency information to be used as previously selected frequency information when selecting a next frequency.

Abstract: A method and system to rapidly, passively, estimate target range, speed and heading for non-maneuvering and maneuvering radio frequency airborne emitters (enemy targets and threats) for tactical fighters using batch based recursive estimators for track initialization and track maintenance that includes providing information processing that operates on interferometer cosine (cone angle) measurements, and estimated SNR (signal-to-noise ratio) data, threat database, and feedback information from pilot maneuver cue algorithm. The present method will initialize airborne tracks using varying degrees of real time and a priori information to quickly estimate coarse airborne emitter heading using real time interferometer cosine (cone angle) measurements and provide pilot aircraft maneuver cues that will accelerate passive range (target speed and heading estimates) convergence.

Abstract: A self-modulating, remote, moving target detector for intrusion alarms, vehicle detection, and remote speed and distance measurement that includes a remote continuous wave radar transceiver that is used to detect moving targets. The same frequency used for the radar transmission is modulated in a continuous manner in order to transmit radar data concerning a moving target to a remote location away from the radar transceiver. The transceiver oscillator is self-modulated by the reflected signal received from a moving target in the transceiver and retransmitted such that the primary radar signal becomes the information carrier concerning the moving target, which is received remotely, in order to activate an alarm or a display system showing the moving target. The system could be utilized with any frequency from audio to light, with RF and microwave of primary interest.

Abstract: A variable-height insole system for a shoe includes a soft-flexible insole and a plurality of heel supporting members in the shoe under the insole. The heel supporting members generally increase in hardness in a downward direction. Selectable lift inserts insertable between the heel supporting members have the greatest hardness.

Abstract: A method of associating features, such as phone number directories, of a mobile communication module with individual NAMs in a communication module having a plurality of NAMs so as to provide accessibility to the directories based on the NAM activated for convenient and efficient access including the steps of establishing and comparing identification codes and further providing the option of changing phone number directories when changing NAMs or receiving the same NAM.

Abstract: A system for location of communication end users including a plurality of wide area networks which control the transmission of voice, data, file and other types of messages in a preconfigured exchange area, each area network including a plurality of local servicing offices controlled by a central regional service point wherein the local servicing offices track, monitor and receive user specific information from users within their designated area and which respond to search requests from the regional service points, the regional service points providing an interface to other wide area networks for complete global communication and location of communication end users.

Abstract: A personal computer system is described, having security features enabling control over access to data retained in such a system. The system has a normally closed enclosure, at least one erasable memory element for selective activation to active and inactive states and for receiving and storing a privileged access password when in the active state, an option switch operatively connected with the erasable memory element for setting the erasable memory element to the active and inactive states, a tamper detection switch operatively connected with the erasable memory element for detecting opening of the enclosure, and a system processor operatively connected with the erasable memory element for controlling access to at least certain levels of data stored within the system by distinguishing between entry and non-entry of any stored privileged access password.

Abstract: An apparatus is disclosed for quickly testing individual wiring nets in a multi-layer device carrier. A central processing unit (CPU) controls a probe to sequentially engage contact pads on the carrier, each of which is electrically connected to a respective wiring net. The probe connects each wiring net to a network sensitive pulse generator circuit which generates a train of output pulses having a frequency dependent upon the transient behavior of the net under test. The stimulation of the net and the sensing of the net's response operate responsively to a feedback signal, which is also a signature signal. By connecting the net under test to the novel circuit, the combination of the novel circuit and the net under test generates the series of output pulses. The number of pulses generated in a predetermined period of time forms the signature of the net under test. A preferred embodiment is described which uses differential amplifiers to stimulate the net and to sense the net's response.

Abstract: The functions of two virtual operating systems (e. S/370 VM, VSE or IX370 and S/88 OS) are merged into one physical system. Partner pairs of S/88 processors run the S/88 OS and handle the fault tolerant and single system image aspects of the system. One or more partner pairs of S/370 processors are coupled to corresponding S/88 processors directly and through the S/88 bus. Each S/370 processor is allocated from 1 to 16 megabytes of contiguous storage from the S/88 main storage. Each S/370 virtual operating system thinks its memory allocation starts at address 0, and it manages its memory through normal S/370 dynamic memory allocation and paging techniques. The S/370 is limit checked to prevent the S/370 from accessing S/88 memory space. The S/88 Operating System is the master over all system hardware and I/O devices.

Abstract: The functions of two virtual operating systems (e.g., S/370 VM, VSE or IX370 and S/88 OS) are merged into one physical system. Partner pairs of S/88 processors run the S/88 OS and handle the fault tolerant and single system image aspects of the system. One or more partner pairs of S/370 processors are coupled to corresponding S/88 processors directly and through the S/88 bus. Each S/370 processor is allocated from 1 to 16 megabytes of contiguous storage from the S/88 main storage. Each S/370 virtual operating system thinks its memory allocation starts at address 0, and it manages its memory through normal S/370 dynamic memory allocation and paging techniques. The S/370 is limit checked to prevent the S/370 from accessing S/88 memory space. The S/88 Operating System is the master over all system hardware and I/O devices.

Abstract: The functions of two virtual operating systems (e.g., S/370 VM, VSE or IX370 and S/88 OS) are merged into one physical system. Partner pairs of S/88 processors run the S/88 OS and handle the fault tolerant and single system image aspects of the system. One or more partner pairs of S/370 processors are coupled to corresponding S/88 processors directly and through the S/88 bus. Each S/370 processor is allocated from 1 to 16 megabytes of contiguous storage from the S/88 main storage. Each S/370 virtual operating system thinks its memory allocation starts at address 0, and it manages its memory through normal S/370 dynamic memory allocation and paging techniques, The S/370 is limit checked prevent the S/370 from accessing S/88 memory space. The S/88 Operating System is the master over all system hardware and I/O devices.

Abstract: A method and apparatus for use in a computer image generator for providing translucency in the scene content of a video processed image as displayed on a cathode ray tube through subpixel processing. The method and apparatus considers the occulting problem of translucent surfaces in a typical computer image generated display. The apparatus and method thereof for processing a translucent object represented by a polygon surface utilizes creation of an array of flag bits per pixel representing a visible bed-of-nails of each polygon surface each of which has its own translucency factor. Each of the surface flag bit signals are processed to provide a logical union between the array of flag bits representing the translucent bed-of-nails of the visible portion of the surface and the array of flag bits stored in the bed-of-nails memory. The final resultant pixel display will be thus representative of the translucency intensities of the various surfaces processed.

Abstract: A multiple intake poppet valve array for use with a single charge carrying intake duct to an engine cylinder in a four cycle internal combustion engine to include three or more annular intake poppet valves and annular valve seats (ports) in fluid communication with said duct and said cylinder for opening and sealing said duct, intake valve lifting and closing means, wherein the area of the duct, the total area of the ports, and the area of the open valves are substantially equal for optimum charge flow at a valve lift distance that occurs earlier and that extends duration when compared with a single poppet valve servicing a similar duct.

Abstract: An intake or exhaust valve assembly for use in a four cycle internal combustion engine including a primary poppet valve, said primary poppet valve having at least one aperture disposed through its valve body and a secondary poppet valve body mounted to seal when engaged to the primary valve body, said secondary valve body having at least one aperture and a biasing means for moving the secondary valve body away from the primary valve body during the initial opening process when the primary valve is accelerating to its opened position. In the closed position of an intake port, the primary valve apertures are not aligned with the secondary valve apertures thus forming a sealed closure across the port. During the opening process of the intake cycle the biasing means moves the secondary valve body away from the primary valve body, thereby permitting intake charge to flow through the apertures disposed in the primary and the secondary valve bodies.

Abstract: A flight simulator includes a host computer 10 coupled to serial buses 13 by master-interface circuits 12, each of which is a serial bus master controller. Each bus 13 is coupled to a number of slave circuits 14, and each slave circuit 14 drives several instrument display devices 15. The slave circuits 14 contain slave bus controllers and digital to analog conversion circuits for developing the drive signals for the display devices 15. Each slave bus controller is provided with one or more programs for processing received serial data in accordance with the electro-mechanical characteristics of the driven display device 15. Analog feedback signals may be provided by the devices 15 and A-D converted in the respective slave circuits 14 before transmission as serial data to the host computer 10 via the buses 13 and master-interfaces 12.

Abstract: A system for generating digital image data bases automatically that is principally for use in visual systems of simulators and for use when a particular geographic area is not required. A data processing circuit generates high detail realistic images statistically under the control of a control data base. A conflict resolution data base retains data for identifying and for resolving geographic conflicts among features generated for a visual system.

Abstract: A motion simulator for simulating the working characteristics of motion vehicles is based on the synergistic `six degrees of freedom` system. The apparatus of the simulator comprises a main frame 10 mounted on three pairs of extensible and retractable legs 11 by means of a corresponding number of universal pivots. The pairs of legs 11 are arranged in a triangular formation on the underside of the frame 10 such that adjacent legs 11 from adjacent vertices of the formation converge to a common foot, to which they are secured by further universal pivots 13. Movement of the frame 10 is achieved by the relative extension and retraction of the legs 11.Supplementary longitudinal acceleration effects are simulated by means of a surge frame 14 slidably mounted on the main frame 10 and independently actuated by means of a piston and cylinder device 17 to move in a fore/aft sense with respect to the frame 10.