Patents by Inventor Sang-Soo Chai

Sang-Soo Chai 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: 8446897
    Abstract: A system and method for providing a multimedia tone/announcement over circuit switched wireless networks are provided. The system and method enable processing of a multiple call leg function based on H.324M over a circuit switched wireless network by relaying an end-to-end H.324M initialization over the circuit switched wireless network. Therefore, a variety of multimedia services (for example, multimedia RBT/announcement service, video conferencing, etc.) together with video phone service based on H.324M in the circuit switched wireless network can be provided, which may be conducive to popularization of video phone service and realization of profits based on the provision of a variety of additional multimedia services.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: May 21, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun Jeong Le, Joon Seo Lee, Sang Soo Chai
  • Patent number: 8422485
    Abstract: A system and method for providing multimedia portal contents in a communication system. The method provides a ring-back tone to a calling terminal, the calling terminal sets first multimedia portal contents to be provided as the ring-back tone in consideration of given information of a calling terminal user. A called terminal sets second multimedia portal contents to provide as the ring-back tone in consideration of the given information of the calling terminal user, and the calling and called terminals transmit call connection setup related signals including set information. A first server receives the call connection setup-related signals and provides specific multimedia portal contents as the ring-back tone when the calling and called terminals set the multimedia portal contents, and provides the determined multimedia portal contents to the calling terminal.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: April 16, 2013
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Joon-Ho Jung, Young-Ki Jeon, Deug-Ku Chang, Sang-Soo Chai
  • Publication number: 20070127655
    Abstract: A system and method for providing multimedia portal contents in a communication system. The method provides a ring-back tone to a calling terminal, the calling terminal sets first multimedia portal contents to be provided as the ring-back tone in consideration of given information of a calling terminal user. A called terminal sets second multimedia portal contents to provide as the ring-back tone in consideration of the given information of the calling terminal user, and the calling and called terminals transmit call connection setup related signals including set information. A first server receives the call connection setup-related signals and provides specific multimedia portal contents as the ring-back tone when the calling and called terminals set the multimedia portal contents, and provides the determined multimedia portal contents to the calling terminal.
    Type: Application
    Filed: November 7, 2006
    Publication date: June 7, 2007
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Joon-Ho Jung, Young-Ki Jeon, Deug-Ku Chang, Sang-Soo Chai