Patents by Inventor Gregory H. DeVette
Gregory H. DeVette 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).
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Patent number: 8001696Abstract: A calibration method for calibrating a compass system suitable for use in a vehicle includes sampling data points of a magnetic field with a magneto-responsive sensor and processing output signals of the sensor via compass circuitry. The compass circuitry includes an analog-to-digital converter for converting analog signals of the sensor to digital signals and a digital-to-analog converter for converting digital signals to analog signals that are supplied to the sensor for adjusting the sensor. The output signals of the sensor are adjusted to be within an operable range of an analog-to-digital converter via an initial calibration mode. After completion of the initial calibration mode, output signals of the sensor are processed to determine when the output signals are outside a range of the analog-to-digital converter. An output of a digital-to-analog converter is adjusted to reposition the output signals of the sensor to be within the range of the analog-to-digital converter.Type: GrantFiled: August 3, 2009Date of Patent: August 23, 2011Assignee: Donnelly CorporationInventors: Kenneth L. Schierbeek, Eric J. Hoekstra, Rodney K. Blank, Merdad Veiseh, Gregory H. DeVette, Kenneth Schofield
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Publication number: 20090292496Abstract: A compass compensation system is provided for automatically and continuously calibrating an electronic compass for a vehicle, without requiring an initial manual calibration or preset of the vehicle magnetic signature. The system initially adjusts a two axis sensor of the compass in response to a sampling of at least one initial data point. The system further calibrates the compass by sampling data points that are substantially opposite to one another on a plot of a magnetic field and averaging an ordinate of the data points to determine a respective zero value for the Earth magnetic field. The system also identifies a change in magnetic signature and adjusts the sensor assembly.Type: ApplicationFiled: August 3, 2009Publication date: November 26, 2009Applicant: DONNELLY CORPORATIONInventors: Kenneth L. Schierbeek, Eric J. Hoekstra, Rodney K. Blank, Merdad Veiseh, Gregory H. DeVette, Kenneth Schofield
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Patent number: 7568290Abstract: A compass compensation system is provided for automatically and continuously calibrating an electronic compass for a vehicle, without requiring an initial manual calibration or preset of the vehicle magnetic signature. The system initially adjusts a two axis sensor of the compass in response to a sampling of at least one initial data point. The system further calibrates the compass by sampling data points that are substantially opposite to one another on a plot of a magnetic field and averaging an ordinate of the data points to determine a respective zero value for the Earth magnetic field. The system also identifies a change in magnetic signature and adjusts the sensor assembly.Type: GrantFiled: February 15, 2008Date of Patent: August 4, 2009Assignee: Donnelly CorporationInventors: Kenneth L. Schierbeek, Eric J. Hoekstra, Rodney K. Blank, Merdad Veiseh, Gregory H. DeVette, Kenneth Schofield
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Publication number: 20080140332Abstract: A compass compensation system is provided for automatically and continuously calibrating an electronic compass for a vehicle, without requiring an initial manual calibration or preset of the vehicle magnetic signature. The system initially adjusts a two axis sensor of the compass in response to a sampling of at least one initial data point. The system further calibrates the compass by sampling data points that are substantially opposite to one another on a plot of a magnetic field and averaging an ordinate of the data points to determine a respective zero value for the Earth magnetic field. The system also identifies a change in magnetic signature and adjusts the sensor assembly.Type: ApplicationFiled: February 15, 2008Publication date: June 12, 2008Applicant: DONNELLY CORPORATIONInventors: Kenneth L. Schierbeek, Eric J. Hoekstra, Rodney K. Blank, Merdad Veiseh, Gregory H. DeVette, Kenneth Schofield
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Patent number: 7331115Abstract: A compass compensation system is provided for automatically and continuously calibrating an electronic compass for a vehicle, without requiring an initial manual calibration or preset of the vehicle magnetic signature. The system initially adjusts a two axis sensor of the compass in response to a sampling of at least one initial data point. The system further calibrates the compass by sampling data points that are substantially opposite to one another on a plot of a magnetic field and averaging an ordinate of the data points to determine a respective zero value for the Earth magnetic field. The system also identifies a change in magnetic signature and adjusts the sensor assembly.Type: GrantFiled: July 8, 2005Date of Patent: February 19, 2008Assignee: Donnelly Corp.Inventors: Kenneth L Schierbeek, Eric J Hoekstra, Rodney K Blank, Merdad Veiseh, Gregory H DeVette, Kenneth Schofield
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Patent number: 6922902Abstract: A compass compensation system is provided for automatically and continuously calibrating an electronic compass for a vehicle, without requiring an initial manual calibration or preset of the vehicle magnetic signature. The system initially adjusts a two axis sensor of the compass in response to a sampling of at least one initial data point. The system further calibrates the compass by sampling data points that are substantially opposite to one another on a plot of a magnetic field and averaging an ordinate of the data points to determine a respective zero value for the Earth magnetic field. The system also identifies a change in magnetic signature and adjusts the sensor assembly.Type: GrantFiled: January 28, 2003Date of Patent: August 2, 2005Assignee: Donnelly CorporationInventors: Kenneth L. Schierbeek, Eric J. Hoekstra, Rodney K. Blank, Merdad Veiseh, Gregory H. DeVette, Kenneth Schofield
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Publication number: 20030115764Abstract: A compass compensation system is provided for automatically and continuously calibrating an electronic compass for a vehicle, without requiring an initial manual calibration or preset of the vehicle magnetic signature. The system initially adjusts a two axis sensor of the compass in response to a sampling of at least one initial data point. The system further calibrates the compass by sampling data points that are substantially opposite to one another on a plot of a magnetic field and averaging an ordinate of the data points to determine a respective zero value for the Earth magnetic field. The system also identifies a change in magnetic signature and adjusts the sensor assembly.Type: ApplicationFiled: January 28, 2003Publication date: June 26, 2003Applicant: Donnelly CorporationInventors: Kenneth L. Schierbeek, Eric J. Hoekstra, Rodney K. Blank, Merdad Veiseh, Gregory H. DeVette, Kenneth Schofield
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Patent number: 6513252Abstract: A compass compensation system is provided for automatically continuously calibrating an electronic compass for a vehicle, without requiring an initial manual calibration or preset of the vehicle magnetic signature. The system initially adjusts a two axis sensor of the compass in response to a sampling of at least one initial data point. The system further calibrates the compass by sampling data points that are substantially opposite to one another on a plot of a magnetic field and averaging an ordinate of the data points to determine a respective zero value for the Earth magnetic field. The system also identifies a change in magnetic signature and adjusts the sensor assembly.Type: GrantFiled: March 31, 2000Date of Patent: February 4, 2003Assignee: Donnelly CorporationInventors: Kenneth L. Schierbeek, Eric J. Hoekstra, Rodney K. Blank, Merdad Veiseh, Gregory H. DeVette, Kenneth Schofield