Patents by Inventor Jon R. Mandeville

Jon R. Mandeville has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5248876
    Abstract: A confocal imaging system utilizes an opaque mask with a slit and a row of pinpoint sensors or utilizes an opaque mask with a skewed pattern of pinholes and an array of isolated pinpoint sensors in a matching pattern in order to obtain sufficient data to provide a complete image for imaging and/or inspecting an object such as electronics in a single one-dimensional scan. The system also simultaneously produces multiple images at different heights in the single one-dimensional scan of the viewed object, and also simultaneously produces images taken in different spectral bands in the same one-dimensional scan of the object to be imaged and/or inspected. The relative height or depth of the different images can be modified by simply adjusting the inclination between the confocal imaging system and a path followed by the object that is to be imaged and/or inspected during the one-dimensional scan.
    Type: Grant
    Filed: April 21, 1992
    Date of Patent: September 28, 1993
    Assignee: International Business Machines Corporation
    Inventors: Pieter J. Kerstens, Jon R. Mandeville, Frederick Y. Wu
  • Patent number: 5018211
    Abstract: A system is described which determines the characteristics of a substantially rounded feature, such as via hole in a printed circuit board. The system includes an image scanner for providing a serial flow of a raster scan image of pixels which represent the rounded feature. Tangent detecting circuits are further provided which select groups (i.e., neighborhoods) of pixels from the scan image, each group including pixels clustered about a plurality of chosen azimuths and adjacent to a tangent to a boundary of the rounded feature. Processing circuits are further provided to trim each selected group of pixels to eliminate pixels not lying on the tangent line. The pixels which remain after the trim operation are representative of the limits (e.g., diameter, radius, etc.) of the rounded feature and enable an analyzing circuit to determine the characteristics of the rounded feature by examining the relationships between the tangent line pixels.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: May 21, 1991
    Assignee: International Business Machines Corp.
    Inventors: Robert S. Jaffe, Jon R. Mandeville
  • Patent number: 4853967
    Abstract: An image is taken of a circuit layer pattern containing circuit element representations and the areas of the circuit element representations within the image are modified. The modification includes at least one modification step which consists of thinning the circuit element representations to the point where at least some features of the circuit element representations are skeletonized, to thereby emphasize distinctive features of the circuit element representations. The emphasized distinctive features are compared with previously determined design criteria for distinctive features expected from the prior steps so that any lack of correspondence indicates a defect.
    Type: Grant
    Filed: April 6, 1988
    Date of Patent: August 1, 1989
    Assignee: International Business Machines Corporation
    Inventor: Jon R. Mandeville