Abstract: A compact system that simulates a pair of human lungs. The lungs can be controlled to breathe spontaneously under a computer program, or the lungs can also be ventilated from a standard mechanical ventilator used in anesthesiology. Lung compliance and resistance can be varied during a simulation exercise to simulate various physiological disease conditions. The unit is compact and will fit into the chest cavity of a mannequin. The device is especially useful for the training of anesthesiologists, especially with respect to ventilating patients.

Abstract: An electronic control loading system to create tactile control feel for vehicles and vehicle simulators (especially aircraft) to provide a realistic reaction force by coupling a linear electro-magnetic actuator to a control element for real-time feedback from a preprogrammed computer controller. In an aircraft simulation system, a loadcell and position transducer are associated with the flight control element for measuring applied force and determination of flight control element position. The position transducer is integrated with an actuator, the actuator being capable of setting forth a drive force that reacts to the force and position data as manipulated by a preprogrammed computer based upon an aircraft data package used to construct real-time software models and a digital signal processor or the like high speed microprocessor used to manipulate flight control algorithms.

Abstract: The invention comprises a portable locating unit useful both as a cellular telephone and portable global positioning system that provides latitude and longitude information remotely to a base unit display. The system includes a small hand held receiver that receives signals from a satellite global positioning system and timing and computing circuits to provide location information signals. The hand held unit also includes a modem and transmitter to a cellular telephone network which is connected to the base unit computational system and display. The location of an individual or object can thus be determined at the remote station through the use of the cellular telephone network.

Abstract: A three-dimensional image processing system which reconstructs real-time display images from scene photographs. The system permits real-time projection of multiple, digitized, photographic databases into the eye space of an unconstrained observer. From the photographic databases, the system forms a composite output image as well as line-of-sight range overlay which permits easy expansion into a multi-channel architecture and to provide line-of-sight range envelope around the observer. The system allows for arbitrary insertion of three-dimensional, independently moving, opaque or partially transparent objects.

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.