Patents by Inventor Don Kees

Don Kees 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: 20240012158
    Abstract: A method for estimating a multipath error of a pseudo-range measurement value, according to an embodiment of the present invention, comprises the steps of: obtaining satellite navigation system information including a pseudo-range measurement value and a carrier wave phase measurement value; obtaining a carrier wave phase time difference measurement value by differentiating the carrier wave phase measurement value with respect to an arbitrary time; setting a monitoring variable for multipath error estimation by using the carrier wave phase time difference measurement value; detecting a change amount of a multipath error regarding the arbitrary time by using the monitoring variable, and determining a time period that can be used to estimate the multipath error; and estimating the multipath error at a specific time point by using the change amount of the multipath error relative to an arbitrary reference time.
    Type: Application
    Filed: October 14, 2021
    Publication date: January 11, 2024
    Inventors: Chang Don Kee, Jungbeom Kim, O Jong Kim, Yonghwan Bae
  • Publication number: 20230150503
    Abstract: An apparatus for preventing rolling of a vehicle operating in an automatic vehicle hold mode includes a reset determination unit configured to determine whether an automatic hold controller controlling an operation of the automatic vehicle hold mode has been reset, a mode determination unit configured to determine whether a mode of the vehicle is the automatic vehicle hold mode when it is determined that the automatic hold controller has been reset, and a vehicle control unit configured to brake the vehicle, based on at least one of a gear position, an opening degree of an accelerator pedal, and whether a brake pedal is operated, when it is determined that the mode of the vehicle is the automatic vehicle hold mode.
    Type: Application
    Filed: March 25, 2022
    Publication date: May 18, 2023
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventor: Don Kee LEE
  • Publication number: 20220397684
    Abstract: A time-differenced carrier phase (TDCP) measurement value-based navigation system according to one embodiment of the present invention comprises: a satellite navigation system information reception unit for acquiring satellite navigation system information including a carrier phase measurement value; an initial position determination unit for determining an initial position of a target on the basis of the satellite navigation system information; a TDCP acquisition unit for acquiring a TDCP measurement value; a relative position determination unit for determining a relative position of the target on the basis of the TDCP measurement value; and an absolute position determination unit for determining an absolute position of the target by accumulating relative positions according to time of the initial position of the target.
    Type: Application
    Filed: February 24, 2020
    Publication date: December 15, 2022
    Inventors: Chang Don KEE, Junesol SONG, O Jong KIM, Jungbeom KIM
  • Publication number: 20220289155
    Abstract: A braking control system and method of a vehicle are configured to safely stop the vehicle by determining whether a brake line fails via detecting a change in braking pressure and compensating for braking force through an engaging operation of an electric parking brake (EPB) when determining that the brake line fails in association with driver manipulation of the brake pedal. The braking control system includes: a vehicle speed detector; a wheel lock detector; a brake pedal operation detector that determines whether a brake pedal is operated; a brake line failure detector that determines whether the brake line fails when the brake pedal is operated; and a controller configured to engage the EPB when a current vehicle speed is equal to or greater than a predetermined vehicle speed, a current state is a wheel-unlock state, and the brake line fails.
    Type: Application
    Filed: September 28, 2021
    Publication date: September 15, 2022
    Inventor: Don Kee Lee
  • Publication number: 20220228863
    Abstract: An indoor positioning system using a reflected light according to an embodiment comprises: a reflection unit consisting of at least one reflective surface; and a user terminal for determining a location of a user on the basis of location information of the reflective surface and distance information from the user to the reflective surface. Each reflective surface is configured to reflect an incident optical signal as reflected lights having different frequencies, and the user terminal includes an optical signal transceiver. When the transmitted optical signal is reflected as a reflected light having a specific frequency (color) by a plurality of reflective surfaces, the user terminal may calculate a distance between the user terminal and the reflective surface by using the received reflected light and determine an indoor location of the user by combining the distance information and the location information of the reflective surface.
    Type: Application
    Filed: June 12, 2020
    Publication date: July 21, 2022
    Inventors: Chang Don Kee, O Jong Kim
  • Patent number: 7703438
    Abstract: A method of maintaining homogeneous charge compression ignition when a temperature within a combustion chamber decreases below an autoignition temperature in an engine that is configured for homogeneous charge compression ignition under at least some engine operating conditions and for spark ignition under at least some engine operating conditions, the method comprising selectively heating contents of the combustion chamber with a glow plug.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: April 27, 2010
    Assignee: Ford Global Technologies, LLC
    Inventors: Themi Petridis, Don Kees, Lucien Koopmans, Jonas Elfstrand
  • Patent number: 7573219
    Abstract: A method and apparatus is disclosed for detecting whether belt slip is occurring between an electric machine and a machine drivingly connected together by a drive belt using only measurements of rotor speed, voltage and current derived from the electric machine, thereby improving the sensitivity of slip detection and eliminating the need for a comparison of rotor speed with a measurement of the rotational speed of the machine.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: August 11, 2009
    Inventors: Don Kees, Themi Petridis
  • Publication number: 20090002230
    Abstract: Pseudolite-based precise positioning system with synchronised pseudolites that can compute the position of a mobile station with slave pseudolites synchronised to master pseudolite is provided. Therefore pseudolite-based precise positioning system according to present invention does not need correction information of a reference station.
    Type: Application
    Filed: September 8, 2008
    Publication date: January 1, 2009
    Inventors: Chang-Don KEE, Doo-Hee YUN
  • Patent number: 7410445
    Abstract: A locking mechanism (6) is provided to block the internal combustion engine (1) at prepositioned cranking angle after shutting down. Preferably, the crankshaft of the engine is positioned at a crankshaft angle that is favorable for cranking. Prepositioning of the crankshaft angle results in a lower first compression torque and therefore increases kinetic energy stored in the crankshaft lumped inertia. The required maximum torque of the cranking aid (2a, 2b, 2c) can therefore be reduced.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: August 12, 2008
    Assignee: Ford Global Technologies, LLC
    Inventors: Erik Surewaard, Don A. Kees, Daniel Kok, Engbert Spijker, Mark Eifert
  • Publication number: 20070289572
    Abstract: A method of maintaining homogeneous charge compression ignition when a temperature within a combustion chamber decreases below an autoignition temperature in an engine that is configured for homogeneous charge compression ignition under at least some engine operating conditions and for spark ignition under at least some engine operating conditions, the method comprising selectively heating contents of the combustion chamber with a glow plug.
    Type: Application
    Filed: June 16, 2006
    Publication date: December 20, 2007
    Inventors: Themi Petridis, Don Kees, Lucien Koopmans, Jonas Elfstrand
  • Publication number: 20070200522
    Abstract: A method and apparatus is disclosed for detecting whether belt slip is occurring between an electric machine and a machine drivingly connected together by a drive belt using only measurements of rotor speed, voltage and current derived from the electric machine, thereby improving the sensitivity of slip detection and eliminating the need for a comparison of rotor speed with a measurement of the rotational speed of the machine.
    Type: Application
    Filed: February 16, 2007
    Publication date: August 30, 2007
    Inventors: Don Kees, Themi Petridis
  • Publication number: 20050113211
    Abstract: A locking mechanism (6) is provided to block the internal combustion engine (1) at prepositioned cranking angle after shutting down. Preferably, the crankshaft of the engine is positioned at a crankshaft angle that is favorable for cranking. Prepositioning of the crankshaft angle results in a lower first compression torque and therefore increases kinetic energy stored in the crankshaft lumped inertia. The required maximum torque of the cranking aid (2a, 2b, 2c) can therefore be reduced.
    Type: Application
    Filed: November 24, 2003
    Publication date: May 26, 2005
    Inventors: Erik Surewaard, Don Kees, Daniel Kok, Engbert Spijker, Mark Eifert
  • Publication number: 20050015198
    Abstract: Pseudolite-based precise positioning system with synchronised pseudolites that can compute the position of a mobile station with slave pseudolites synchronised to master pseudolite is provided. Therefore pseudolite-based precise positioning system according to present invention does not need correction information of a reference station.
    Type: Application
    Filed: November 6, 2002
    Publication date: January 20, 2005
    Inventors: Chang-Don Kee, Doo-Hee Yun
  • Publication number: 20040133333
    Abstract: After shutting down an internal combustion engine, the crankshaft of the engine is positioned at a crankshaft angle that is favorable for cranking. Prepositioning of the crankshaft angle results in a lower first compression torque and therefore increases kinetic energy stored in the crankshaft lumped inertia. The required maximum torque of the cranking aid can therefore be reduced. A locking mechanism may be provided to lock the internal combustion engine at an optimal crank angle.
    Type: Application
    Filed: November 24, 2003
    Publication date: July 8, 2004
    Inventors: Erik Surewaard, Don A. Kees, Daniel Kok, Engbert Spijker, Mark Eifert
  • Patent number: 6520654
    Abstract: A thin panel lit cluster including a graphics appliqué with a first and second side and at least one opaque section and one translucent section. A light-carrying panel with a first and second side is positioned such that the first side is adjacent to the second side of the graphics appliqué. The light-carrying panel has at least one opening defined in it and at least one light source is positioned to align with the opening. Opposite the light source, the light-carrying panel has a first light-redirecting area nearest its first side. In another position on the light-carrying panel, there is a second light-redirecting area nearest the second side of the light-carrying panel and opposite a translucent section of the graphics appliqué.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: February 18, 2003
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Daniel K. Angell, Don A. Kees, Paul S. Ewers, Thomas L. Jones, Michael J. Luettgen
  • Publication number: 20020085366
    Abstract: A thin panel lit cluster including a graphics appliquéwith a first and second side and at least one opaque section and one translucent section. A light-carrying panel with a first and second side is positioned such that the first side is adjacent to the second side of the graphics appliqué. The light-carrying panel has at least one opening defined in it and at least one light source is positioned to align with the opening. Opposite the light source, the light-carrying panel has a first light-redirecting area nearest its first side. In another position on the light-carrying panel, there is a second light-redirecting area nearest the second side of the light-carrying panel and opposite a translucent section of the graphics appliqué.
    Type: Application
    Filed: December 29, 2000
    Publication date: July 4, 2002
    Inventors: Daniel K. Angell, Don A. Kees, Paul S. Ewers, Thomas L. Jones, Michael J. Luettgen