Abstract: An application such as an interpretative emulator executes a wide range of different classes of emulated program instructions developed for the processor architecture being emulated on a host system which includes an dual integer pipelined execution unit. The sets of RISC instructions which execute emulated program instructions are organized within the emulator so as to be processed as two distinct instruction streams by the dual integer pipelined execution units wherein one of the pipelined unit performs the steps necessary to completing a current or foreground like operation on each emulated program instruction while the other pipelined unit performs the steps of an anticipated lookahead or background like operation on the next emulated program instruction.

Abstract: A method and system for determining the location of a mobile position determining system with respect to a destination. In one embodiment, a mobile position determining system has a communication device coupled thereto. Position information of the mobile position determining system is transmitted, via the communication device, to a destination position information database. The destination position information database contains position information of at least one destination. A position comparator then generates range and bearing information indicative of the relative position of the mobile position determining system with respect to the at least one destination. An output device then reports the relative position of the mobile position determining system with respect to the at least one destination to a user of the mobile position determining system.

Abstract: The method produces an improved cellularly structured environment map of a self-propelled mobile unit which orients itself using sensors based on wave reflection. In detail, the following measures are implemented. First, an error of discrete representation in the positional determination of the self-propelled mobile unit is avoided in that the position of the self-propelled mobile unit within an originating cell of the coordinate system of the environment map is also used for identifying the location of obstacles. Further, a smaller cell size is employed in the proximity of the self-propelled mobile unit in order to facilitate maneuvering between obstacles located close to one another. Further, two separate grid maps are maintained, one containing the unit with a rotational orientation and the other being rotated by a rotational angle relative to the global environment map for a fast occupation of a plurality of cells with values.

Abstract: A system for estimating lateral offset of a vehicle from a centered position on a road is comprised of a video camera and a digitizer to produce digitized input signals representative of the road ahead of the vehicle. A circuit is provided for sampling the digitized input signal to create a perspective-free image comprised of rows and columns of pixels. The curvature of the road is determined by ascertaining an amount by which each row of pixels of the perspective-free image must be horizontally shifted to cause features to appear in the perspective-free image as a straight line. Each column of pixels of the perspective-free image is added to produce a single row, referred to as a current scanline profile, representative of the vehicle's position on the road.

Abstract: A method and apparatus is disclosed for providing a passenger restraint actuation signal for use in an actuatable passenger restraint system in a vehicle is provided. A sensor provides a signal indicative of crash acceleration. A crash energy value is determined from the crash acceleration signal and is compared against an energy threshold value. If the determined crash energy value equals or exceeds the energy threshold value, a passenger restraint actuation signal is provided.

Abstract: A cruise control road speed control device optimizes the transient behavior during activation of speed control phases. The cruise control device has an additional device located outside the speed controller in the form of a load adaptation element. The load adaptation element sets the speed control output signal, upon activation of a speed control phase via an engine-load-adjusting additional signal, to a value that is required for a constant transition of the driving-force-determining control signal and in the subsequent transient phase of speed control with linkage to the output signal of the speed controller, for a return of this additional term to a value of zero, without the behavior of the speed controller being influenced thereby. This permits a very smooth transition from a previous driving phase into a cruise-control-determined speed control phase.

Abstract: The present invention is a system and method for simulating the performance of a cooling tower. More precisely, the simulator of the present invention predicts values related to the heat and mass transfer from a liquid (e.g., water) to a gas (e.g., air) when provided with input data related to a cooling tower design. In particular, the simulator accepts input data regarding: (a) cooling tower site environmental characteristics; (b) cooling tower operational characteristics; and (c) geometric characteristics of the packing used to increase the surface area within the cooling tower upon which the heat and mass transfer interactions occur. In providing such performance predictions, the simulator performs computations related to the physics of heat and mass transfer within the packing.

Abstract: A wireless system for monitoring vehicle parameters, such as tire pressure, using radio frequency (RF) signals transmitted from transmitters close in proximity to an associated parameter sensor, to a centrally located receiver. The transmitted RF signals from the transmitters may be distinguished by the frequency of the respective transmitted RF signals. To detect the presence of an RF signal having a particular frequency, the wireless vehicle parameter monitoring system of one embodiment includes a digitally controlled tuner or a plurality of parallel bandpass filters, which pass different ranges of frequencies corresponding to the frequencies of the RF signals output from the transmitters. In this manner, RF signals transmitted from different tires may be distinguished based upon the frequency of the transmitted signal. The receiver of this system may be implemented in the receiver of a trainable transmitter such that a dedicated receiver need not be provided.

Abstract: A computer-based system is disclosed for monitoring and controlling the takeoff and landing of aircraft from an airport that is large enough to require the services that are routinely associated with operations at a control tower. Individual air traffic controllers continue to have the responsibility for monitoring aircraft that are within the operations zone of their tower. But when responsibility for a given aircraft is to be transferred from one controller to another, an icon in each of two separate arrays on a computer screen is sequentially selected by the transferring controller. The first selected icon represents the aircraft; the second selected icon represents the new controller. Other icons give certain control functions (e.g.

Abstract: [Object] To improve system reliability and safety. [Constitution] The rotation speed of the motor 6 is detected by the motor rotation speed detection circuit 17 and the amount of rotation of the motor 6 is calculated from the detected rotation speed by the motor rotation amount calculating means 10a. Then, a fault is determined when the amount of rotation exceeds a predetermined value and the drive of the motor 6 is stopped by the motor stopping means 123.

Abstract: A control arrangement for vehicles is suggested which includes at least two computer elements for carrying out at least the same control function. Measures for checking the operability of the control arrangement are provided. The execution of these measures is allocated to the at least two computer elements in such a manner that each computer element carries out at least one of the monitoring measures. This monitoring measure is not carried out by the other computing element.

Abstract: An accident avoidance system in which a substantially continuous data stream consisting of multiple vehicle velocity and location information is processed by means that will generate advisories to vehicles that are approaching potentially hazardous situations. These advisories are in advance of the vehicles hazard encounter so that driver corrective action can be taken to avoid collision. For each vehicle along a monitored length of highway, means are provided for computing the vehicles actual acceleration or deceleration and for computing the deceleration required for the vehicle to avoid an accident. Collision avoidance advisories are generated whenever the vehicle's acceleration or deceleration deviates from the deceleration required to avoid a collision. Means are provided for detecting vehicles that may be operated by drivers whose performance is impaired.

Abstract: The method for efficiently providing an optimized fanout network includes the steps of providing a series chain of inverters for driving a number of loads. Each load is assigned to a given location of the inverter chain according to the polarity and the required time of the load. Tree-covering techniques are used in conjunction with dynamic programming to minimize the total area of the fanout chain by selecting and sizing the gates to be used in the fanout chain. With such an arrangement, a minimal area fanout chain which satisfies the timing constraints of each load is provided.

Abstract: An integrated Vehicle Electrical Design and analysis System (VEDS) which is adapted to accommodate data interchanged between multiple vendor-independent Computer Aided Engineering (CAE) tools. The system includes a Vehicle Database (VDB) which is operative as a central repository to store all design, analysis and library information. The VDB is interfaced and data is exchanged with the CAE tools through an interface which is predominantly object-oriented using Common Lisp Object System (CLOS). For each tool, an outbound translator is operative to translate the tool's internal data structures into a standard interchange format. Similarly, for each tool, an inbound translator is operative to translate a standard or tool specific interchange format into the tool's internal data structures. The VDB also includes an inbound and an outbound translator. The inbound translator is operative to load data structures from each of the CAE tools into the VDB.

Abstract: Methods for GPS-assisted determination of location coordinates of a mobile user or selected position on or adjacent to the Earth's surface with improved accuracy. Elevation readings from an altimeter or barometer are integrated with readings of the GPS-determined elevation coordinate for that location, using Kalman filter techniques, minimum least square techniques, or comparison of certain statistically defined parameters associated with the altimeter and GPS variables, such as the standard deviation of the expected errors in these variables. The resulting elevation coordinate may be a statistical blend or filtered blend of the altimeter value and a GPS-determined value for the elevation coordinate; or this resulting elevation coordinate can be chosen to be one or the other of these values, based upon comparison of time varying statistical parameters corresponding to the altimeter and the GPS.

Abstract: A method is provided for navigating a vehicle. Waypoint exclusion zones are efined as circles whose centers are known-position waypoints. The vehicle is steered along a path that is tangential to the "current" waypoint exclusion zone. This path that is maintained until a relative bearing between the vehicle and a center of the current waypoint exclusion zone is at least 90.degree. if the path is left of the center of the current waypoint exclusion zone, and at most -90.degree. if the path is right of the center of the current waypoint exclusion zone. When either of these conditions is met, the vehicle is located along the circle of the current waypoint exclusion zone. The vehicle is then advanced along the circle of the current waypoint exclusion zone until a heading of the vehicle matches a heading of a path that: is tangential to the "next" waypoint exclusion zone.

Abstract: An improved method of estimating a vehicle speed reference value (VREF) at a wheel so as to prevent false slip detection and premature ABS activation in a motor vehicle equipped with an Anti-Locking Braking System. A maximum possible rate of change of velocity (ACCEL limit) for the vehicle is determined over a predetermined range of corresponding vehicle speeds. Wheel speed and estimated reference speed at the wheel (VREF) are determined along with the rate of change of the wheel speed (WHEEL ACCEL). The WHEEL ACCEL is compared to the corresponding ACCEL limit to limit the estimated reference speed to the corresponding ACCEL limit.

Abstract: A length of time required for the verification of data transmitted from a satellite or satellites is reduced. A distance r1 calculated from a time delay required for the propagation of a radio wave between a transmitting and a receiving site is obtained, as is a line-of-sight distance r2 which is calculated from the positions of a satellite and a point of reception. When a difference between these two distances is small, data from these satellites are regarded as valid data. However, when the difference is large, data is regarded as involving a large error. The position of the point of reception is determined by a positioning calculation which utilizes data from predetermined three or four verified satellites, or is entered by an operator. The position of the satellite is obtained from orbital data which is delivered by that satellite.

Abstract: An output control system for an internal combustion engine includes an engine output lowering magnitude command component outputting a command indicative of a magnitude to lower the engine output, an engine operating condition judgement component responsive to an engine output control command to make a judgement at every combustion timing on whether a cylinder scheduled for next combustion is or is not to be placed into a resting state, a cylinder resting performing component for disabling combustion at the combustion timing for which resting is determined by the judgement component, and a storage for storing judgment results made by the judgement portion during a predetermined number of immediately preceding combustion timings.

Abstract: To control turn behavior of a vehicle such as an automobile more effectively and desirably by presuming the turn behaving of the vehicle at higher precision, a turn behavior control device detects lateral acceleration Gy of a vehicle body, vehicle speed V and yaw rate r of the vehicle body, then calculates lateral slide velocity Vy of the vehicle by integrating deviation Gy-Vr according to a predetermined integration time constant, then presumes the turn behavior of the vehicle based upon at least the lateral slide velocity Vy, and then controls the turn behavior of the vehicle based upon the presumed turn behavior. When the turn behavior of the vehicle is presumed to be stable, the integration time constant is made small to decrease accumulation of errors, whereas when the turn behavior of the vehicle is presumed to be unstable, the integration time constant is made large so as to definitely execute the behavior control.