Patents by Inventor John C. Dalton

John C. Dalton 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: 5555102
    Abstract: A system for producing a set of dither matrix signals having local correlation comprises a processor, an input device, a display device, a hard output device, an incremental threshold generator, a pattern generator, an optimizer, a dither matrix storage, and a pixel activator. The incremental threshold generator determines a maximum tolerable error and generates an incremental threshold signal. The maximum tolerable error is the greatest tolerable variation between dither matrices for adjacent gray levels. The incremental threshold signal controls the transition of cells of dither matrices for adjacent gray levels. The pattern generator receives the incremental threshold signal and a dither matrix signal for the previous gray level and generates the possible pattern signals based on a dither matrix signal for an adjacent gray level and the incremental threshold signal.
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: September 10, 1996
    Assignee: Apple Computer, Inc.
    Inventor: John C. Dalton
  • Patent number: 5485550
    Abstract: A fuzzy logic system for processing a vector of signals includes a rule partition table stored in an electronic memory, a rule identifier, and a rule processor. The rule partition table is organized to include identifiers, each corresponding to a unique combination of partitions of signal values of the vector of signals, and each identifying fuzzy rules which are preselected to be applied to a corresponding vector of signals having signal values within respective ranges of the partitions corresponding to the identifier. Preselection may include only fuzzy rules which produce non-zero outputs when applied to a vector of signals having signal values within respective ranges of the partitions corresponding to the identifier. The rule identifier accesses a location in the rule partition table corresponding to the vector of signals, and retrieves therefrom a corresponding identifier. The rule processor applies each identified fuzzy rule to the vector of signals to produce a processed vector of signals.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: January 16, 1996
    Assignee: Apple Computer, Inc.
    Inventor: John C. Dalton
  • Patent number: 5483412
    Abstract: A method of producing an externally non-conductive hose assembly is provided which is made up of a hollow cylindrical member novelly connected to coupling means, where the connection prevents the dissipation of electrical charges therethrough and has sufficient strength to withstand severe torsional stresses and provides a seal to substantially preclude the undesired and gradual escape of fluids over the lifetime of the assembly.
    Type: Grant
    Filed: February 7, 1995
    Date of Patent: January 9, 1996
    Assignee: Titeflex Corporation
    Inventors: Mark F. Albino, Ralph T. Blanchard, John C. Dalton
  • Patent number: 5430603
    Abstract: An externally non-conductive hose assembly is provided which is made up of a hollow cylindrical member novelly connected to coupling means, where the connection prevents the dissipation of electrical charges therethrough and has sufficient strength to withstand severe torsional stresses and provides a seal to substantially preclude the undesired and gradual escape of fluids over the lifetime of the assembly.
    Type: Grant
    Filed: February 25, 1994
    Date of Patent: July 4, 1995
    Assignee: Titeflex Corporation
    Inventors: Mark F. Albino, Ralph T. Blanchard, John C. Dalton
  • Patent number: 5079563
    Abstract: An error reducing raster scan method for a raster scan device having multiple simultaneous scan lines, the method including the steps of separating scan lines to be placed adjacent to each other into different scan groups, so that no two scan lines to be placed adjacent to each other are in the same scan group, and a scanning a set of scan lines from a different one of the scan groups on each scan across the area.
    Type: Grant
    Filed: February 20, 1990
    Date of Patent: January 7, 1992
    Assignee: Apple Computer, Inc.
    Inventors: Gary K. Starkweather, John C. Dalton