Patents by Inventor Chang-Hwan Park

Chang-Hwan Park 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: 20070166516
    Abstract: Disclosed are a flooring time including a substrate layer, printed layer, and transparent film, which are laminated from the bottom, and concave patterns mechanically embossed on the substrate layer and printed layer at the same time, and a process for preparing the flooring tile. The laminating and embossing operation of the respective layers are successively performed by use of a series of successively arranged rolls.
    Type: Application
    Filed: October 16, 2006
    Publication date: July 19, 2007
    Applicant: LG CHEM, LTD.
    Inventors: Gyu-Yull Kim, Chang-Hwan Park, Chang-Il Kim
  • Publication number: 20060193320
    Abstract: A data transmission method and a data transmission system using an improved network address translation method. The data transmission method includes requesting a real-time service from a multimedia device to a home gateway within a home network; inputting a binary code corresponding to the multimedia device to a service type field indicating priority information of data when the home gateway forms a mapping table used for conversion of addresses; the home gateway requesting setting of an IP address of the multimedia device from a service provider; setting the IP address including the binary code corresponding to the multimedia device according to the request of setting the IP address; and the service provider transmitting a data packet including the binary code corresponding to the multimedia device. The method is applied to the selective IP packet, thereby shortening the transmission time of real-time data packets for multimedia.
    Type: Application
    Filed: February 24, 2006
    Publication date: August 31, 2006
    Inventors: Dong-yun Shin, Yoo-seung Hwang, Chang-hwan Park
  • Publication number: 20060137005
    Abstract: A system for authenticating a device and a user in a home network. The home network manages one or more devices through a home server. The system includes a service device for providing service contents according to the control of a control device. The system includes a home server for containing authentication information for the respective devices. The home server performs a network configuration for the respective devices according to the authentication information. A permission server is connected with the home server. The permission server contains service permission information according to the characteristics of the respective control devices. The control device performs a network authentication through the home server, and is provided with service contents from the service device according to whether the permission server allows the requested service contents. The system can perform an authentication procedure and a network configuration for the control devices.
    Type: Application
    Filed: December 5, 2005
    Publication date: June 22, 2006
    Inventor: Chang-hwan Park