Abstract: The relative transverse position of a measuring device and the aperture patterns in a longitudinally and transversely moving strip of material is held constant. A platform, which supports the measuring device, moves transversely along with the strip. Multi-element energy sensors are supported on the platform at the longitudinal edges of the pattern. Different numbers of elements are illuminated when the strip is off center and a difference signal is provided. The difference signal is used to move the platform to maintain the desired constant transverse relative positioning.

Abstract: An apparatus for centering a deflection yoke in a support ring includes a spindle having a tapered portion and a cylindrical portion. A spider, having radial arms, is centered on the spindle. A planar member includes an inset which is centered on the spindle, and is supported on the radial arms. The inset centers the support ring on the spindle. The tapered portion centers a yoke on the spindle whereby the yoke is centered in the support ring. Holding members are in the support ring, and hold the yoke centered in the support ring.

Abstract: A system for measuring the energy transmission through a moving aperture pattern includes a CCD (charge coupled device) sensor having at least one row of pixels arranged perpendicular to the direction of motion. An encoder responds to the motion and provides count pulses. For each count pulse, specific pixels are addressed to establish a plurality of inspection areas for the aperture pattern through which energy transmission is measured. The transmission is averaged for all the inspection areas to determine the acceptability of the aperture pattern.

Abstract: In a method of detecting blemishes in the proximity of the perimeter of a CCD image, pairs of adjacent pixels in the proximity of the perimeter are sequentially considered. For each pair of adjacent pixels, a plurality of pixels, in a blemish detection pixel pattern extending toward the center of the image are considered. The sum of the four outer pixels in the pixel pattern are compared to the sum of the inner pixels and the variance is compared to selected minimum and maximum differences. When the variance is outside either the minimum or the maximum differences a blemish has been detected. When the difference is within the two differences no blemish has been found. The blemish pattern is moved one pixel toward the center of the image and the process repeated. The difference comparison is repeated for a selected plurality of times and if desired the differences can be changed for some of the comparisons.

Abstract: An auxiliary focusing circuit for an automatic focusing solid state array camera includes a control circuit and a drive circuit. The camera includes a switch which is actuated when the lens travels a selected distance without being focused. The control circuit responds to the switch and actuates the drive circuit. The switch also reverses the direction of travel of the lens. The drive circuit rotates an optical scanning member and the camera can be focused while the lens travels in the opposite direction.

Abstract: Blemishes in the proximity of the perimeter of an image on a charge coupled device (CCD) are detected. The image pixels adjacent to the perimeter are sequentially detected and three consecutive pixels define a motion as either straight, clockwise or counterclockwise. The detection occurs in a clockwise direction and straight or clockwise motions are permitted. When two counterclockwise motions are detected, and a clockwise motion has not occurred between them, a blemish signal is provided.

Abstract: A system for verifying the position of a moveable table within a narrow range includes a sensor which yields an output proportional to the travel of the moveable table. A comparator receives the output and provides an output pulse when the travel is within a selected range. A pulse generator receives the output pulse and provides a control pulse. Logic means receives the control pulse and provides either an alarm signal or a ready signal.

Abstract: A device for providing a substantially flat light field to a light imaging medium includes a transparent disc and an optical system. The surface of the disc is made opaque and light is coupled to the optical system through the edge of the disc by reflection from the internal surface of the disc. The intensity of light passing through the disc to the optical system decreases as the distance from the coupling edge increases. The combined effects of the disc and the optical system result in a substantially flat light field.

Abstract: A device for orienting an object on a flat surface includes two levers which are pivotably coupled to the surface at pivot points between the ends of the levers. An actuating device is supported by and coupled between one end of the levers. The other ends of the levers are free to urge the object into the desired orientation and location upon energization of the actuating device.

Abstract: The base for an electron tube has pin apertures configured to bias the pins inwardly against the base to help retain the base on the tube and to decrease the possibility of the connector pins being bent outwardly, away from the longitudinal axis of the tube.

Abstract: An apparatus for removing undesirable particles from a kinescope panel/mask frame assembly includes a plurality of thumper arms. The arms have a cam follower at one end and a thumper at the other end. Cams on a rotatable shaft engage the cam followers to raise the thumpers above the panel. The cams include inset portions to disengage the cams and cam followers. The cams and cam followers face in opposite directions so that the thumpers alternately impact the panel. During the thumping, charged air is passed across the panel/mask frame assembly to charge the assembly and any particles adhering to the assembly because of static charge. The like charges cause the particles to be repelled from the assembly. The combination of the charged airflushing and thumping disengages particles from the assembly which otherwise could cause blocked apertures or shorted electron guns.

Abstract: The identification of permissible variations in a CCD image perimeter as blemishes is avoided by sequentially considering the adjacent pixels of a selected plurality of pixels. Pixel motions are defined between adjacent pixels and can be either straight or diagonal. Diagonal pixel motions are recorded as straight when the first and last pixel motions are diagonal in opposite directions and the intervening pixel motions are straight.

Abstract: A system for uniformly dispensing a frit material onto the seal edge of a CRT funnel includes a motor for rotating the funnel. The motor also drives a pulse generator which provides a selected number of input pulses for each increment of rotation. The input pulses are provided to two programmable BCD counters. One counter controls the funnel motor and is programmed to change the motor speed around the funnel corners. The other counter controls the feed screw dispenser and is programmed to maintain the ratio of motor speeds within a selected range of values.

Abstract: A system for measuring the intensity profiles of the electron beams of color kinescopes includes a camera having a CCD. A color field is placed on the kinescope screen and a pixel in the center of one of the colored stripes is selected. The color field is turned off and the beam is scanned in short lines in one direction and incrementally stepped across the selected pixel in the perpendicular direction. The charge level on the selected pixel is representative of the beam intensity and is recorded. The entire beam is stepped across the pixel to measure the intensity profile in one direction. The directions of scanning and stepping are then interchanged to measure the beam intensity profile in the normal direction. The process is then repeated for the other electron beams in the kinescope.

Abstract: A device for raising and lowering a heavy object between selected heights and positions includes two pairs of spaced, parallel lift arms which are pivotally coupled at one end. One end of one of the pairs of lift arms is pivotally coupled to a base member. A shaft extends between the lever arms and a handle is provided to rotate the shaft to simultaneously rotate the lift arms with respect to the base member. Linkages couple the other lift arms to the shaft at pivot points which are offset from the pivot points of the lift arms and from the shaft. Accordingly, the two pairs of lever arms simultaneously move with respect to one another upon the actuation of the connecting shaft.

Abstract: A structure for converging electrons at the screen of a flat panel display and for transversely scanning electrons across the channels of the display includes a plurality of conductive strips arranged between the acceleration mesh and the phosphor screen. The strips extend longitudinally along and are substantially parallel to the acceleration mesh and are also substantially parallel to one another. A first portion of the strips is voltage biased to converge electrons in the proximity of the screen and scan said electrons transversely across the channels and the other portion is voltage biased to scan the electrons transversely across the channels.

Abstract: A system for the automatic adjustment of the pressure pad holding force in accordance with the thickness of the workpiece and the forming tool stroke includes a force transducer and a displacement transducer. The force transducer is used to monitor the force between the pressure pad and the workpiece. The output of the displacement transducer is continually read as the part is being formed. The workpiece thickness and forming tool stroke are used to calculate the optimum holding force. The pressure of a fluid system is adjusted to change the holding force to the optimum value.

Abstract: An apparatus for verifying the acceptability of the curvature of kinescope shadow mask after such masks are welded to the support frame includes a fixed member having a surface curved to conform to the curvature of the shadow mask. Sensors are embedded in the curved surface and engage a shadow mask placed on the fixed member. A movable support frame includes support members which support the shadow mask frame above the fixed member while the mask is welded to the shadow mask frame. The sensors also are movable along with the movable support frame. After the welding is completed the support frame is raised to remove the mask from the surface of the fixed member. The sensors are biased and remain in engagement with the shadow mask whereby the sensor readings verify that objectionable deformation of the shadow mask did not occur during the welding operation.

Abstract: A frit dispensing device includes a hopper which dispenses the frit material to the seal edge of a CRT funnel. The device centers the funnel and raises the funnel to place the seal edge in a reference plane a desired distance from the hopper. Funnel orientation members engage the funnel to place the funnel in the desired orientation with respect to the hopper. The funnel is rotated beneath the hopper and frit material is uniformly dispensed to the entire seal edge.

Abstract: A seal arrangement for retaining liquid in a chamber at a level above some of the sides of the chamber includes two pairs of rollers. The rollers of each pair contact one another at a height above the low sides of the chamber. The rollers in each pair are arranged at different levels so that the rollers contact one another at a point higher than the height of the low sides of the chamber. Flexible seal members extend from the bottom of the chamber to a point above the center of each of the bottom rollers. Pressure of liquid in the chamber biases the flexible seal members against the rollers to prevent liquid from leaking along the bottom of the rollers. Restrictions in the outlets of the chamber establish the liquid level at a height which is above the contact point of the pairs of rollers so that both sides of a strip of material passing between the pairs of rollers are washed with the liquid.