Patents by Inventor Ray Cavell

Ray Cavell 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).

  • Misfire detection system and method of median filtering
    Patent number: 6847882
    Abstract: A processor having an embedded median filter routine, a method of median filtering using a vehicle's CPU, and a misfire detection system for an internal combustion engine with crankshaft acceleration detection means for determining crankshaft acceleration values. In general, the processor is configured to receive new acceleration values and includes a data structure with a data array containing a predetermined number of data fields storing acceleration values in magnitude order. The embedded median filtering routine is configured to identify an oldest in time acceleration value, identify a deletion position in the data array for the oldest in time acceleration value, identify an insertion position in the data array, move selected acceleration values in the data array to vacate the insertion position, insert the new acceleration value in the insertion position, and determine the median value of the acceleration values in the data array.
    Type: Grant
    Filed: May 15, 2003
    Date of Patent: January 25, 2005
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Gary P. Miller, Ray Cavell, Bob Gruszczynski
  • MISFIRE DETECTION SYSTEM AND METHOD OF MEDIAN FILTERING
    Publication number: 20040230367
    Abstract: A processor having an embedded median filter routine, a method of median filtering using a vehicle's CPU, and a misfire detection system for an internal combustion engine with crankshaft acceleration detection means for determining crankshaft acceleration values. In general, the processor is configured to receive new acceleration values and includes a data structure with a data array containing a predetermined number of data fields storing acceleration values in magnitude order. The embedded median filtering routine is configured to identify an oldest in time acceleration value, identify a deletion position in the data array for the oldest in time acceleration value, identify an insertion position in the data array, move selected acceleration values in the data array to vacate the insertion position, insert the new acceleration value in the insertion position, and determine the median value of the acceleration values in the data array.
    Type: Application
    Filed: May 15, 2003
    Publication date: November 18, 2004
    Inventors: Gary P. Miller, Ray Cavell, Bob Gruszczynski