Patents by Inventor Donald Chan

Donald Chan 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: 8761977
    Abstract: A method for optimizing an engine idle speed in a vehicle having an engine, a motor generator unit (MGU), and an energy storage system (ESS) includes determining vehicle operating values, including at least one of: an electrical load of an accessory, a torque capacity of the MGU, a temperature of the MGU, an efficiency of the MGU, and a state of charge (SOC) of the ESS. The method also includes calculating a set of engine speed values using the set of vehicle operating values, and using a controller to command the engine idle speed as a function of the set of engine speed values. A vehicle includes an engine, an ESS, an MGU, and a controller having an algorithm adapted for optimizing an idle speed of the engine as set forth above.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: June 24, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Donald Chan, William L. Aldrich, III, John L. Lahti, Birendra P. Bhattarai, Krunal P. Patel, Ning Jin
  • Publication number: 20130002558
    Abstract: The present disclosure generally relates to an input method including the steps of: receiving a key event sequence inputted by a keyboard; comparing the key event sequence with prestored data, determining whether the key event sequence is a sequence predefined by the prestored data; if the key event sequence is determined to be the sequence predefined by the prestored data, finding an input command corresponding with the key event sequence according to a mapping relationship and sending the input command to a command processing system. By using the input method, a keyboard using feature value of the key event sequence to map to a corresponding input command, which makes the condition of the keyboard determines whether an input command is triggered no longer depending on the physical location of one key strictly.
    Type: Application
    Filed: January 9, 2012
    Publication date: January 3, 2013
    Applicant: Perception Digital Limited
    Inventors: Sai Hung HO, Jack LAU, Kam Yiu Donald CHAN
  • Publication number: 20110088658
    Abstract: A method for optimizing an engine idle speed in a vehicle having an engine, a motor generator unit (MGU), and an energy storage system (ESS) includes determining vehicle operating values, including at least one of: an electrical load of an accessory, a torque capacity of the MGU, a temperature of the MGU, an efficiency of the MGU, and a state of charge (SOC) of the ESS. The method also includes calculating a set of engine speed values using the set of vehicle operating values, and using a controller to command the engine idle speed as a function of the set of engine speed values. A vehicle includes an engine, an ESS, an MGU, and a controller having an algorithm adapted for optimizing an idle speed of the engine as set forth above.
    Type: Application
    Filed: October 15, 2009
    Publication date: April 21, 2011
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Donald Chan, William L. Aldrich, III, John L. Lahti, Birendra P. Bhattarai, Krunal P. Patel, Ning Jin
  • Patent number: 6656179
    Abstract: A bone plate for osteosynthesis having a plate-shaped base and a top, with the base defining only a single receiving opening for retaining a bone screw that attaches it, for example, to a vertebra.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: December 2, 2003
    Inventors: Bernd Schaefer, Henry Halm, Ulf Liljenqvist, Donald Chan