Patents Represented by Attorney Lauren Bruzzone
  • Patent number: 5416614
    Abstract: A method and apparatus for converting data representation of an image between a first color space and a second color space. The quality of images must be preserved in situations where further processing of the image is required. The advance made in the art is the properties directly associated with the development of tuned round-trip tables. Degradation of the image quality from the conversion process is minimal and continued conversions of the image between color spaces does not propagate a further degradation of the image quality.
    Type: Grant
    Filed: June 23, 1992
    Date of Patent: May 16, 1995
    Assignee: IBM Corporation
    Inventor: Jennifer M. Crawford
  • Patent number: 5351056
    Abstract: A computer method is disclosed for extracting data on a target from a clutter degraded environment by using non-time-synchronized results from two sensors stations. The method, which is employed in satellite tracking systems, transforming multiple non-synchronous sensor returns comprised of angles from line of sight observations from passive sensors into target position coordinates. Observations from successive returns of each sensor are paired and a triangulation point is calculated. Successive triangulation points are used to determine points on the projected trajectory of the target. These calculated target position coordinates may then used to project the future path of the target.
    Type: Grant
    Filed: June 21, 1993
    Date of Patent: September 27, 1994
    Assignee: International Business Machines Corp.
    Inventor: Joseph C. Sawyer
  • Patent number: 5142167
    Abstract: This invention reduces the Delta I noise on an integrated circuit chip by reducing the changes in current supply required for transitions in logic states of the input/output devices. The invention uses a 3/6 binary code for communicating between integrated circuit chips. This code uses six bits to represent the 16 hex code digits typically used for computer instructions. Three of the six bits are in a high logic state and three of the six bits are in a low logic state for all 16 hex code representations. Therefore, changing from any one logic state to another, does not change the overall current supply required by the six input/output devices. Groups of six input/output devices (corresponding to the 3/6 code) are located relatively close to each other with respect to the power supply pins which supply current to the six input/output devices. As a result, there is a high to low transition for every low to high transition over similar parasitic impedances on the input/output devices.
    Type: Grant
    Filed: May 1, 1991
    Date of Patent: August 25, 1992
    Assignee: International Business Machines Corporation
    Inventors: Joseph L. Temple, Richard F. Rizzolo, Charles B. Winn
  • Patent number: 5137840
    Abstract: A method of manufacturing a vertical bipolar transistor including the steps of: providing a semiconductor substrate including a first region of a first conductivity type; forming an extrinsic base region of a second conductivity type in the surface of the first region, the extrinsic base region generally bounding a portion of the first region; forming by ion implantation a linking region of the second conductivity type in the surface of the bounded portion of the first region so as to electrically link generally opposing edges of the extrinsic base region through the linking region; forming an insulating spacer over the junction between the extrinsic base region and the linking region so as to generally bound a portion of the linking region within the portion of the first region; etching the surface of the bounded portion of the linking region a short distance into the linking region; forming by epitaxial growth a first layer of semiconductor material of the second conductivity type on the etched surface of t
    Type: Grant
    Filed: October 24, 1990
    Date of Patent: August 11, 1992
    Assignee: International Business Machines Corporation
    Inventors: Brian H. Desilets, Chang-Ming Hsieh, Louis L. Hsu
  • Patent number: 5115228
    Abstract: The present invention accomplishes the above objects by employing a display having the capability to emit light and form images viewable from both the front and back of the display. The invention also shutters the images displayed on the front and back of the display so that the images can be correctly displayed depending on the viewpoint of the viewer. Text and images displayed such that they are seen from both the front and back of the display appear differently to the front and rear viewer. Electronic shutters are placed between the display and both the front and rear viewers so that they can be flashed on and off fast enough to provide a stable image appearing to each viewer. The shutters also flash slow enough so that display data can be rewritten to provide each viewer with a correct image. The correct image can be either the corrected image of that image seen by the opposing viewer, or a completely separate image. In this way, simultaneous images appear to both the front and rear viewer.
    Type: Grant
    Filed: August 2, 1990
    Date of Patent: May 19, 1992
    Assignee: International Business Machines Corporation
    Inventors: Richard H. Harris, Richard G. Minor, Robert W. Price