Patents by Inventor Tae Sun Roh

Tae Sun Roh 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: 20200156497
    Abstract: An electric vehicle charging control system may include an electric vehicle which extracts current time information, the integrity of which has been verified, by use of a public key cryptography, and charges power from a charging terminal, when it is determined that a charging contact certificate is valid, based on the extracted current time information, a server to transmit the current time information, the integrity of which has been verified using the public key cryptography, to the electric vehicle, and the charging terminal connected to the electric vehicle. The validity of the certificate used in vehicle charging and billing for charging is determined through the power line communication, and the security against the hacking is enhanced in the charging of the electric vehicle.
    Type: Application
    Filed: May 21, 2019
    Publication date: May 21, 2020
    Inventors: Don Hyoung LEE, Chung Hi LEE, Hyeon Soo KIM, Tae Sun ROH
  • Patent number: 7425769
    Abstract: An engine start method of a vehicle having starter and ISG considers the temperature of an engine coolant and the voltage of a battery. The objective start rpm of the starter is raised and the objective start rpm of the ISG is lowered as the engine temperature is lowered.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: September 16, 2008
    Assignee: Hyundai Motor Company
    Inventor: Tae Sun Roh
  • Publication number: 20080093863
    Abstract: An engine start method of a vehicle having starter and ISG considers the temperature of an engine coolant and the voltage of a battery. The objective start rpm of the starter is raised and the objective start rpm of the ISG is lowered as the engine temperature is lowered.
    Type: Application
    Filed: December 29, 2006
    Publication date: April 24, 2008
    Inventor: Tae Sun Roh