Abstract: A virtual reality viewing system and method senses the motions of a viewer providing a sequence of viewing perspectives and creates a real time image to the viewer based upon a probable viewing image. The system and method accounts for latency between the movement of the viewer and generation of the viewed image by generating a spline based upon measured velocities of the viewer's head and creates a look-ahead velocity based upon the spline and a dampening factor. Then an image is generated based upon the look-ahead velocities and displayed to the viewer. The dampening factor smoothes the look-ahead velocities by adding latency back into the look-ahead velocities to account for sudden movements of the viewer.

Abstract: A virtual reality viewing system generally including sensors responsive to selected motions of a viewer operable to generate signals corresponding to such motions providing a sequence of viewing perspectives; a processor for measuring an increase in magnitude of such signals at selected time intervals, generating a spline corresponding to the magnitudes of such signals at such selected time intervals, projecting probable subsequent viewing perspectives that will occur in subsequent time intervals and generating images corresponding to such probable subsequent viewing perspectives and a screen for displaying such images to the viewer as current viewing perspectives.

Abstract: A virtual reality viewing system and method senses the motions of a viewer providing a sequence of viewing perspectives and creates a real time image to the viewer based upon a probable viewing image. The system and method accounts for latency between the movement of the viewer and generation of the viewed image by generating a spline based upon measured velocities of the viewer's head and creates a look-ahead velocity based upon the spline and a dampening factor. Then an image is generated based upon the look-ahead velocities and displayed to the viewer. The dampening factor smoothes the look-ahead velocities by adding latency back into the look-ahead velocities to account for sudden movements of the viewer.

Abstract: A number of computer-numerical-control (CNC) machine controllers are associated in the same plant or facility or in related facilities. Each CNC machine controller gathers and stores status information related to the state of operations being performed. A remotely located central computer separately addresses each of the controllers to transfer the status information to a central location where the entire plant or facility operation can be evaluated.

Abstract: A method and apparatus for programming the motion of a machine tool in a three-dimensional machining space defined by an X, Y and Z coordinate system, the machine tool having a spindle linearly displaceable in three orthogonal X, Y and Z axes and rotatable about two mutually perpendicular A and C axes within the machining space. A probe, mounted in the spindle and coupled to transducers, is moved by hand through a desired cutting path for an actual part. A computer connected to the transducers moves the machine in the direction that the probe is moved and selectively records the position of the probe to create an NC parts program that replicates the cutting path motions.