Patents by Inventor Sam S. Chang

Sam S. Chang 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).

  • Vehicle slowdown control via short range wireless communication
    Patent number: 8239076
    Abstract: A method and system for enabling police pursuing a vehicle to slow the vehicle down via short range wireless communication with the vehicle. The process can be carried out with or without involvement of a call center that provides telematics services to the vehicle. The method involves configuring the vehicle to accept a slowdown command, confirming the target vehicle at a pursuing police vehicle, establishing the short range connection between the police vehicle and target vehicle, and slowing the target vehicle by sending it the slowdown command over the wireless connection. The call center can enable or disable the slowdown service according to the vehicle owner's wishes.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: August 7, 2012
    Assignee: General Motors LLC
    Inventors: Daniel C. McGarry, Dmitri Jdanov, Bradley J. Burgess, Christopher L. Oesterling, Sam S. Chang, Richard F. Heines
  • SMS and packet data performance monitoring
    Patent number: 7953528
    Abstract: A system and method for monitoring data transfer performance between a central facility and a vehicle that includes calculating the message latency between the transmission and receipt of a message from a call center to the vehicle, or vice-versa. The information can be used to generate a latency map that is useful in diagnosing wireless system problems and in deciding when and how to communicate with a vehicle depending upon its location.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: May 31, 2011
    Assignee: General Motors LLC
    Inventors: Christopher L. Oesterling, Richard F. Heines, Sam S. Chang
  • VEHICLE SLOWDOWN CONTROL VIA SHORT RANGE WIRELESS COMMUNICATION
    Publication number: 20090248222
    Abstract: A method and system for enabling police pursuing a vehicle to slow the vehicle down via short range wireless communication with the vehicle. The process can be carried out with or without involvement of a call center that provides telematics services to the vehicle. The method involves configuring the vehicle to accept a slowdown command, confirming the target vehicle at a pursuing police vehicle, establishing the short range connection between the police vehicle and target vehicle, and slowing the target vehicle by sending it the slowdown command over the wireless connection. The call center can enable or disable the slowdown service according to the vehicle owner's wishes.
    Type: Application
    Filed: March 31, 2008
    Publication date: October 1, 2009
    Applicant: GENERAL MOTORS CORPORATION
    Inventors: Daniel C. McGarry, Dmitri Jdanov, Bradley J. Burgess, Christopher L. Oesterling, Sam S. Chang, Richard F. Heines
  • SMS AND PACKET DATA PERFORMANCE MONITORING
    Publication number: 20090164551
    Abstract: A system and method for monitoring data transfer performance between a central facility and a vehicle that includes calculating the message latency between the transmission and receipt of a message from a call center to the vehicle, or vice-versa. The information can be used to generate a latency map that is useful in diagnosing wireless system problems and in deciding when and how to communicate with a vehicle depending upon its location.
    Type: Application
    Filed: December 21, 2007
    Publication date: June 25, 2009
    Applicant: GENERAL MOTORS CORPORATION
    Inventors: Christopher L. Oesterling, Richard F. Heines, Sam S. Chang