Patents by Inventor Pai Hun Hahn

Pai Hun Hahn 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).

  • Elevator system and method of monitoring elevators by using a virtual elevator group
    Patent number: 7712587
    Abstract: The present invention relates to a method and an elevator system for monitoring elevators by using a virtual elevator group. The method for monitoring elevators in an elevator system including a plurality of elevators classified into a plurality of elevator groups, and at least one virtual elevator group including a plurality of elevators, at least one of which is included in a different elevator group and displaying the elevator related information on the elevators included in the selected virtual elevator group.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: May 11, 2010
    Assignee: Otis Elevator Company
    Inventors: Sung Sub Kim, Ki Hyun Nam, Pai Hun Hahn
  • Elevator System and Method of Monitoring Elevators by Using a Virtual Elevator Group
    Publication number: 20080264732
    Abstract: The present invention relates to a method and an elevator system for monitoring elevators by using a virtual elevator group. The method for monitoring elevators in an elevator system including a plurality of elevators classified into a plurality of elevator groups, and at least one virtual elevator group including a plurality of elevators, at least one of which is included in a different elevator group and displaying the elevator related information on the elevators included in the selected virtual elevator group.
    Type: Application
    Filed: February 17, 2006
    Publication date: October 30, 2008
    Inventors: Sung Sub Kim, Ki Hyun Nam, Pai Hun Hahn
  • Group management control method for elevator
    Patent number: 6000504
    Abstract: The present invention relates to servicing a car to a hall call in a group management system which controls a plurality of elevators installed in a building. A group management control method for an elevator according to the present invention is capable of decreasing an average waiting time and a waiting generation probability by selecting more than two cars having high evaluation values after evaluating each car using a synthetic evaluation function, and allocating one car which is regarded as an optimum car for servicing by applying a genetic algorithm which is known to be highly efficient in a system with a large search space.
    Type: Grant
    Filed: December 30, 1997
    Date of Patent: December 14, 1999
    Assignee: LG Industrial Systems Co., Ltd.
    Inventors: Eung-Lyeol Koh, Jeong-O Kim, Pai Hun Hahn