Patents by Inventor Steve Ka-Lai Leung

Steve Ka-Lai Leung 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: 5877963
    Abstract: A method for handling of a document in a computer system, includes digitizing the document with the scanner to form a digitized image, determining a feature vector for the digitized image, comparing feature vectors of a plurality of previously stored images to the feature vector, returning a list of locations in the memory having at least one of the plurality of previously stored documents with a feature vector similar to the feature vector, and performing a task on the digitized image appropriate for documents in a selected location in the memory.
    Type: Grant
    Filed: February 26, 1997
    Date of Patent: March 2, 1999
    Assignee: Documagix, Incorporated
    Inventors: Steve Ka Lai Leung, Samuel S. Hahn, Jon R. Degenhardt, Andrew C. Segal
  • Patent number: 5642288
    Abstract: A method for handling of a document in a computer system, includes digitizing the document with the scanner to form a digitized image, determining a feature vector for the digitized image, comparing feature vectors of a plurality of previously stored images to the feature vector, returning a list of locations in the memory having at least one of the plurality of previously stored documents with a feature vector similar to the feature vector, and performing a task on the digitized image appropriate for documents in a selected location in the memory.
    Type: Grant
    Filed: November 10, 1994
    Date of Patent: June 24, 1997
    Assignee: Documagix, Incorporated
    Inventors: Steve Ka Lai Leung, Samuel S. Hahn, Jon R. Degenhardt, Andrew C. Segal
  • Patent number: 4034353
    Abstract: Computer monitor instructions are placed in appropriate locations in a routine to be monitored. Upon their execution, a decoder appropriately activates or de-activates circuitry, which develops time-related performance parameters. These time-related parameters are produced by a first counter which counts to one second and then resets a second, sampling counter. The sampling counter is stepped by clock pulses gated to it in response to a decoder activation signal. Each second the sampling counters contents are gated to a register to control the height of a bar graph display. Alternatively, the sampling counter contents may be summed over a number of intervals and divided by that number of intervals to produce an average count for controlling the bar graph display. Lastly, the number of decoder activations may be counted over the one second interval to provide a rate indication.
    Type: Grant
    Filed: October 29, 1975
    Date of Patent: July 5, 1977
    Assignee: Burroughs Corporation
    Inventors: William Michael Denny, Russell Louis Hagen, Steve Ka-Lai Leung
  • Patent number: 4001699
    Abstract: A circuit for controlling the height of a bar graph display in response to a digital input signal. A first count, representing the particular cathode segment of the bar graph under energization, is developed by a counter which monitors the clock signal driving the bar graph display. A second count is developed by a counter stepped by a clock when the digital input signal is in a selected logic state. At the end of a selected interval, the counters contents are transferred to a register for supply to a digital comparator, which compares the first and second counts and produces a control signal upon their equality.
    Type: Grant
    Filed: September 15, 1975
    Date of Patent: January 4, 1977
    Assignee: Burroughs Corporation
    Inventors: William Michael Denny, Russell Louis Hagen, Steve Ka-Lai Leung