Patents by Inventor Jan K. Schiffmann

Jan K. Schiffmann 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).

  • Publication number: 20210374974
    Abstract: An illustrative example method of tracking an object includes detecting one or more points on the object over time to obtain a plurality of detections, determining a position of each of the detections, determining a relationship between the determined positions, and determining an estimated heading angle of the object based on the relationship.
    Type: Application
    Filed: August 16, 2021
    Publication date: December 2, 2021
    Inventors: Wenbing Dang, Jan K. Schiffmann, Kumar Vishwajeet, Susan Chen
  • Patent number: 11113824
    Abstract: An illustrative example method of tracking an object includes detecting one or more points on the object over time to obtain a plurality of detections, determining a position of each of the detections, determining a relationship between the determined positions, and determining an estimated heading angle of the object based on the relationship.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: September 7, 2021
    Assignee: Aptiv Technologies Limited
    Inventors: Wenbing Dang, Jan K. Schiffmann, Kumar Vishwajeet, Susan Chen
  • Patent number: 11035943
    Abstract: An illustrative example method of classifying a detected object includes detecting an object, determining that an estimated velocity of the object is below a preselected threshold velocity requiring classification, determining a time during which the object has been detected, determining a first distance the object moves during the time determining a speed of the object from the first distance and the time, determining a second distance that a centroid of the detected object moves during the time, and classifying the detected object as a slow moving object or a stationary object based on a relationship between the first and second distances and a relationship between the estimated velocity and the speed.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: June 15, 2021
    Assignee: APTIV TECHNOLOGIES LIMITED
    Inventors: Kumar Vishwajeet, Jan K. Schiffmann, Wenbing Dang, Keerthi Raj Nagaraja, Franz P. Schiffmann
  • Patent number: 10914813
    Abstract: An illustrative example method of tracking a detected object comprises determining that a tracked object is near a host vehicle, determining an estimated velocity of the tracked object, and classifying the tracked object as frozen relative to stationary ground when the estimated velocity is below a preselected object threshold and a speed of the host vehicle is below a preselected host threshold.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: February 9, 2021
    Assignee: APTIV TECHNOLOGIES LIMITED
    Inventors: Wenbing Dang, Jan K. Schiffmann, Kumar Vishwajeet, Keerthi Raj Nagaraja, Franz P. Schiffmann
  • Publication number: 20200349718
    Abstract: An illustrative example method of tracking an object includes detecting one or more points on the object over time to obtain a plurality of detections, determining a position of each of the detections, determining a relationship between the determined positions, and determining an estimated heading angle of the object based on the relationship.
    Type: Application
    Filed: April 30, 2019
    Publication date: November 5, 2020
    Inventors: Wenbing Dang, Jan K. Schiffmann, Kumar Vishwajeet, Susan Chen
  • Patent number: 10816344
    Abstract: An illustrative example method of tracking a moving object includes determining an initial pointing angle of the object from a tracking device, determining an estimated position of a selected feature on the object based upon the initial pointing angle, determining a velocity vector at the estimated position, determining a lateral acceleration at the estimated position based upon the velocity vector and a yaw rate of the object, determining a sideslip angle of the selected feature based on the lateral acceleration, and determining a refined pointing angle of the object from the determined sideslip angle.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: October 27, 2020
    Assignee: APTIV TECHNOLOGIES LIMITED
    Inventors: Jan K. Schiffmann, Wenbing Dang, Kumar Vishwajeet, Keerthi Raj Nagaraja, Franz P. Schiffmann
  • Patent number: 10775494
    Abstract: An illustrative example method of tracking a moving object includes determining a heading angle of a centroid of the object from a tracking sensor, determining a raw difference value corresponding to a difference between a pointing angle of a selected feature on the object and the heading angle, wherein the raw difference is based on a trajectory curvature of the centroid from the tracking sensor and a distance between the centroid and the selected feature, determining a filtered difference between the pointing angle and the heading angle using a low pass filter, and determining the pointing angle by subtracting the filtered difference from the heading angle.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: September 15, 2020
    Assignee: APTIV TECHNOLOGIES LIMITED
    Inventors: Jan K. Schiffmann, Wenbing Dang, Kumar Vishwajeet, Keerthi Raj Nagaraja, Franz P. Schiffmann
  • Publication number: 20200064436
    Abstract: An illustrative example method of tracking a detected object comprises determining that a tracked object is near a host vehicle, determining an estimated velocity of the tracked object, and classifying the tracked object as frozen relative to stationary ground when the estimated velocity is below a preselected object threshold and a speed of the host vehicle is below a preselected host threshold.
    Type: Application
    Filed: August 21, 2018
    Publication date: February 27, 2020
    Inventors: Wenbing Dang, Jan K. Schiffmann, Kumar Vishwajeet, Keerthi Raj Nagaraja, Franz P. Schiffmann
  • Patent number: 10565468
    Abstract: An object tracking system suitable for use on an automated vehicle includes a camera, a radar-sensor and a controller. The controller is configured to assign a vision-identification to each vision-track associated with an instance of an object detected using the camera, and assign a radar-identification to each radar-glob associated with an instance of grouped-tracklets indicated detected using the radar-sensor. The controller is further configured to determine probabilities that a vision-track and a radar-glob indicate the same object. If the combination has a reasonable chance of matching it is includes in a further screening of the data to determine a combination of pairings of each vision-track to a radar-track that has the greatest probability of being the correct combination.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: February 18, 2020
    Assignee: Aptiv Technologies Limited
    Inventor: Jan K. Schiffmann
  • Publication number: 20200025902
    Abstract: An illustrative example method of classifying a detected object includes detecting an object, determining that an estimated velocity of the object is below a preselected threshold velocity requiring classification, determining a time during which the object has been detected, determining a first distance the object moves during the time determining a speed of the object from the first distance and the time, determining a second distance that a centroid of the detected object moves during the time, and classifying the detected object as a slow moving object or a stationary object based on a relationship between the first and second distances and a relationship between the estimated velocity and the speed.
    Type: Application
    Filed: July 19, 2018
    Publication date: January 23, 2020
    Inventors: Kumar Vishwajeet, Jan K. Schiffmann, Wenbing Dang, Keerthi Raj Nagaraja, Franz P. Schiffmann
  • Publication number: 20190277639
    Abstract: An illustrative example method of tracking a moving object includes determining an initial pointing angle of the object from a tracking device, determining an estimated position of a selected feature on the object based upon the initial pointing angle, determining a velocity vector at the estimated position, determining a lateral acceleration at the estimated position based upon the velocity vector and a yaw rate of the object, determining a sideslip angle of the selected feature based on the lateral acceleration, and determining a refined pointing angle of the object from the determined sideslip angle.
    Type: Application
    Filed: March 7, 2018
    Publication date: September 12, 2019
    Inventors: Jan K. Schiffmann, Wenbing Dang, Kumar Vishwajeet, Keerthi Raj Nagaraja, Franz P. Schiffmann
  • Publication number: 20190277960
    Abstract: An illustrative example method of tracking a moving object includes determining a heading angle of a centroid of the object from a tracking sensor, determining a raw difference value corresponding to a difference between a pointing angle of a selected feature on the object and the heading angle, wherein the raw difference is based on a trajectory curvature of the centroid from the tracking sensor and a distance between the centroid and the selected feature, determining a filtered difference between the pointing angle and the heading angle using a low pass filter, and determining the pointing angle by subtracting the filtered difference from the heading angle.
    Type: Application
    Filed: March 7, 2018
    Publication date: September 12, 2019
    Inventors: Jan K. Schiffmann, Wenbing Dang, Kumar Vishwajeet, Keerthi Raj Nagaraja, Franz P. Schiffmann
  • Patent number: 10114106
    Abstract: In accordance with one embodiment, a radar system with auto-alignment suitable for use in an automated vehicle is provided. The system includes a radar-sensor, a speed-sensor, and a controller. The radar-sensor is used to detect objects present in a field-of-view proximate to a host-vehicle on which the radar-sensor is mounted. The radar-sensor is operable to determine a measured-range-rate (dRm), a measured-azimuth-angle (Am), and a measured-elevation-angle (Em) to each of at least three objects present in the field-of-view. The speed-sensor is used to determine a measured-speed (Sm) of the host-vehicle. The controller is in communication with the radar-sensor and the speed-sensor.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: October 30, 2018
    Assignee: DELPHI TECHNOLOGIES, INC.
    Inventors: Jan K. Schiffmann, Yu Liu, David A. Schwartz, Xumin Zhu
  • Patent number: 9983301
    Abstract: A radar system suitable for an automated vehicle includes a radar sensor and a controller. The radar-sensor is mounted on a host-vehicle. The radar-sensor is operable to detect radar-signals reflected by scattering-points of a target-vehicle located proximate to the host-vehicle. The controller is in communication with the radar-sensor. The controller is configured to determine a present-range-rate, a present-azimuth, and optionally a present-range, of each of the scattering-points at a present-time. The controller is also configured to recall a prior-range-rate, a prior-azimuth, and optionally a prior-range, of each of the scattering-points at a prior-time. The controller is also configured to calculate a yaw-rate of the target-vehicle at the present-time based on the present-range-rate, the present-azimuth, the prior-range-rate, and the prior-azimuth, and optionally the present-range and the prior-range, of each of the scattering-points.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: May 29, 2018
    Assignee: Delphi Technologies, Inc.
    Inventors: Yu Liu, Jan K. Schiffmann
  • Publication number: 20180067494
    Abstract: A road-model-definition system suitable for an automated-vehicle includes a camera, a lidar-unit, and a controller. The camera used is to provide an image of an area proximate to a host-vehicle. The lidar-unit is used to provide a point-cloud descriptive of the area. The controller is in communication with the camera and the lidar-unit. The controller is configured to determine an image-position of a lane-marking in the image, select ground-points from the point-cloud indicative of a travel-surface, determine coefficients of a three-dimensional (3D) road-model based on the ground-points, and determine a transformation to map the lane-marking in the image onto the travel-surface based on the image-position of a lane-marking and the 3D road-model and thereby obtain a 3D marking-model.
    Type: Application
    Filed: September 2, 2016
    Publication date: March 8, 2018
    Inventors: Jan K. Schiffmann, David A. Schwartz
  • Publication number: 20180024228
    Abstract: In accordance with one embodiment, a radar system with auto-alignment suitable for use in an automated vehicle is provided. The system includes a radar-sensor, a speed-sensor, and a controller. The radar-sensor is used to detect objects present in a field-of-view proximate to a host-vehicle on which the radar-sensor is mounted. The radar-sensor is operable to determine a measured-range-rate (dRm), a measured-azimuth-angle (Am), and a measured-elevation-angle (Em) to each of at least three objects present in the field-of-view. The speed-sensor is used to determine a measured-speed (Sm) of the host-vehicle. The controller is in communication with the radar-sensor and the speed-sensor.
    Type: Application
    Filed: July 22, 2016
    Publication date: January 25, 2018
    Inventors: Jan K. Schiffmann, Yu Liu, David A. Schwartz, Xumin Zhu
  • Patent number: 9810782
    Abstract: A radar system suitable for use on a vehicle and configured to detect a false radar-track arising from a reflection of a radar return from a target includes a first sensor, a second sensor, and a controller. The first sensor outputs a first signal indicative of a first target in a first area proximate to a vehicle. The second sensor outputs a second signal indicative of a second target in a second area proximate to the vehicle and different from the first area. The controller receives the first signal and the second signal. The controller determines that the second target is a reflection of the first target when a reflection-line that bisects and extends orthogonally from a line-segment extending between the first target and the second target intersects with a reflection surface detected by the second sensor.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: November 7, 2017
    Assignee: DELPHI TECHNOLOGIES, INC.
    Inventor: Jan K. Schiffmann
  • Publication number: 20170206436
    Abstract: An object tracking system suitable for use on an automated vehicle includes a camera, a radar-sensor and a controller. The controller is configured to assign a vision-identification to each vision-track associated with an instance of an object detected using the camera, and assign a radar-identification to each radar-glob associated with an instance of grouped-tracklets indicated detected using the radar-sensor. The controller is further configured to determine probabilities that a vision-track and a radar-glob indicate the same object. If the combination has a reasonable chance of matching it is includes in a further screening of the data to determine a combination of pairings of each vision-track to a radar-track that has the greatest probability of being the correct combination.
    Type: Application
    Filed: January 19, 2016
    Publication date: July 20, 2017
    Inventor: Jan K. Schiffmann
  • Publication number: 20170097410
    Abstract: A radar system suitable for an automated vehicle includes a radar sensor and a controller. The radar-sensor is mounted on a host-vehicle. The radar-sensor is operable to detect radar-signals reflected by scattering-points of a target-vehicle located proximate to the host-vehicle. The controller is in communication with the radar-sensor. The controller is configured to determine a present-range-rate, a present-azimuth, and optionally a present-range, of each of the scattering-points at a present-time. The controller is also configured to recall a prior-range-rate, a prior-azimuth, and optionally a prior-range, of each of the scattering-points at a prior-time. The controller is also configured to calculate a yaw-rate of the target-vehicle at the present-time based on the present-range-rate, the present-azimuth, the prior-range-rate, and the prior-azimuth, and optionally the present-range and the prior-range, of each of the scattering-points.
    Type: Application
    Filed: October 2, 2015
    Publication date: April 6, 2017
    Inventors: Yu Liu, Jan K. Schiffmann
  • Publication number: 20170057545
    Abstract: A system for automated operation of a host-vehicle includes an object-sensor, a global-positioning-system (GPS) receiver, and a controller. The object-sensor is used to determine a first-polynomial indicative of a preferred-steering-path based on an object detected proximate to a host-vehicle. The GPS-receiver is used to determine a second-polynomial indicative of an alternative-steering-path based on a GPS-map. The controller is configured to steer the host-vehicle in accordance with the first-polynomial when the object is detected, and steer the host-vehicle in accordance with the second-polynomial when the object is not detected. The improvement allows the system to make use of a less expensive/less accurate version of the GPS-receiver, and a less complicated GPS-map than would be anticipated as necessary for automated steering of the host-vehicle using only the GPS-receiver and the GPS-map.
    Type: Application
    Filed: August 26, 2015
    Publication date: March 2, 2017
    Inventors: MICHAEL H. LAUR, LUDONG SUN, INDU VIJAYAN, JAN K. SCHIFFMANN