Patents by Inventor Alex Kurnia

Alex Kurnia 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: 8892395
    Abstract: An angular position of a rotating device is detected by sensing and counting high-resolution transitions of high-resolution digital sensors in response to the rotating device rotating; sensing low-resolution transitions of a low-resolution digital sensor in response to the rotating device rotating, the low-resolutions transitions being unevenly spaced apart; determining an angular position of the rotating device in response to determining a number of high-resolution transitions between pairs of low-resolution transitions.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: November 18, 2014
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Patrick A. O'Gorman, Rene Vivanco, Alex Kurnia
  • Patent number: 8589110
    Abstract: A cost-effective system architecture and apparatus for programmable automatic power supply testing. The system utilizes board level interface between various system testing modules and an Automatic Test Controller (ATC). The ATC receives coded test requests from the software on an industrial PC and control the various testing modules inside ATC to execute the tests. Test results were sent back to the PC and saved in a result file. A single industrial PC can control two or more ATC's and test two or more power supply units simultaneously. The ATC based test system is lower cost than the conventional Automatic Test Equipment which uses device level interface and standardized test devices.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: November 19, 2013
    Assignee: Synergistic Technologies Solutions, Inc.
    Inventors: Guang Liu, Alex Kurnia Choi
  • Patent number: 8466646
    Abstract: The position of a rotor of a motor is determined. The motor includes a stator having a plurality of coils. The rotor includes at least one rotating magnetic field device. When the rotor is moving below a threshold speed, the current in the coils is measured. A pre-programmed data structure is accessed. The data structure stores stator currents associated with predetermined rotor positions. A first absolute position of the rotor is determined from the data structure according to the measured current from each of the coils. When the rotor is moving above the threshold speed, one or more rising or falling edges of magnetic field strength associated with the at least one rotating magnetic field device are sensed. At least one timing aspect of the rising and falling edges of magnetic field strength are compared to determine a second absolute position of the rotor.
    Type: Grant
    Filed: February 21, 2011
    Date of Patent: June 18, 2013
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Patrick A. O'Gorman, Rene Vivanco, Alex Kurnia
  • Publication number: 20120235674
    Abstract: An angular position of a rotating device is detected by sensing and counting high-resolution transitions of high-resolution digital sensors in response to the rotating device rotating; sensing low-resolution transitions of a low-resolution digital sensor in response to the rotating device rotating, the low-resolutions transitions being unevenly spaced apart; determining an angular position of the rotating device in response to determining a number of high-resolution transitions between pairs of low-resolution transitions.
    Type: Application
    Filed: February 21, 2012
    Publication date: September 20, 2012
    Applicant: CONTINENTAL AUTOMOTIVE SYSTEMS, INC.
    Inventors: Patrick A. O'Gorman, Rene Vivanco, Alex Kurnia
  • Patent number: 8121811
    Abstract: Methods and systems for detecting an angular position of a rotating device are disclosed, including sensing and counting high-resolution transitions of a high-resolution digital sensor in response to the rotating device rotating; sensing low-resolution transitions of a low-resolution digital sensor in response to the rotating device rotating, the low-resolutions transitions being spaced apart at uneven angles; determining an angular position of the rotating device in response to determining a number of high-resolution transitions between pairs of low-resolution transitions.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: February 21, 2012
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Patrick A. O'Gorman, Rene Vivanco, Alex Kurnia
  • Publication number: 20110248658
    Abstract: The position of a rotor of a motor is determined. The motor includes the rotor and a stator and the stator includes a plurality of coils. The rotor further includes at least one rotating magnetic field device. When the rotor is moving below a threshold speed, the current in each of the plurality of coils of the stator is measured. A pre-programmed data structure is accessed. The pre-programmed data structure stores a plurality of stator currents associated with a plurality of predetermined rotor positions. A first absolute position of the rotor is determined from the data structure according to the measured current from each of the plurality of coils. When the rotor is moving above the threshold speed, one or more rising or falling edges of magnetic field strength associated with the at least one rotating magnetic field device of the rotor are sensed. At least one timing aspect of the rising and falling edges of magnetic field strength are compared to determine a second absolute position of the rotor.
    Type: Application
    Filed: February 21, 2011
    Publication date: October 13, 2011
    Applicant: CONTINENTAL AUTOMOTIVE SYSTEMS, INC.
    Inventors: Patrick A. O'Gorman, Rene Vivanco, Alex Kurnia
  • Patent number: 7915888
    Abstract: Methods and systems for detecting an angular position of an electric motor are disclosed, including sending an electrical pulse through a stator coil of the electric motor, determining an approximate angular position of a rotor of the electric motor in response to detecting an timing of a returning electrical pulse from the stator coil, the timing of the returning electrical pulse being indicative of the angular position of the rotor; and determining an accurate position of the rotor in response to sensing a transition of a digital sensor in response to the rotor rotating relative to the stator, the transition being indicative of the accurate position.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: March 29, 2011
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Patrick A. O'Gorman, Rene Vivanco, Alex Kurnia
  • Publication number: 20100225466
    Abstract: A cost-effective system architecture and apparatus for programmable automatic power supply testing. The system utilizes board level interface between various system testing modules and an Automatic Test Controller (ATC). The ATC receives coded test requests from the software on an industrial PC and control the various testing modules inside ATC to execute the tests. Test results were sent back to the PC and saved in a result file. A single industrial PC can control two or more ATC's and test two or more power supply units simultaneously. The ATC based test system is lower cost than the conventional Automatic Test Equipment which uses device level interface and standardized test devices.
    Type: Application
    Filed: March 3, 2009
    Publication date: September 9, 2010
    Inventors: Guang Liu, Alex Kurnia Choi
  • Publication number: 20090251089
    Abstract: Methods and systems for detecting an angular position of an electric motor are disclosed, including sending an electrical pulse through a stator coil of the electric motor, determining an approximate angular position of a rotor of the electric motor in response to detecting an timing of a returning electrical pulse from the stator coil, the timing of the returning electrical pulse being indicative of the angular position of the rotor; and determining an accurate position of the rotor in response to sensing a transition of a digital sensor in response to the rotor rotating relative to the stator, the transition being indicative of the accurate position.
    Type: Application
    Filed: April 2, 2008
    Publication date: October 8, 2009
    Applicant: Temic Automotive of North America, Inc.
    Inventors: Patrick A. O'Gorman, Rene Vivanco, Alex Kurnia
  • Publication number: 20090254301
    Abstract: Methods and systems for detecting an angular position of a rotating device are disclosed, including sensing and counting high-resolution transitions of a high-resolution digital sensor in response to the rotating device rotating; sensing low-resolution transitions of a low-resolution digital sensor in response to the rotating device rotating, the low-resolutions transitions being spaced apart at uneven angles; determining an angular position of the rotating device in response to determining a number of high-resolution transitions between pairs of low-resolution transitions.
    Type: Application
    Filed: April 2, 2008
    Publication date: October 8, 2009
    Applicant: Temic Automotive of North America, Inc.
    Inventors: Patrick A. O'Gorman, Rene Vivanco, Alex Kurnia