Patents by Inventor Deuk-Ho Ryu

Deuk-Ho Ryu 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: 7769387
    Abstract: A system and method are provided for using differentiated telephone numbers to determine whether to perform a vocoder bypass. In an exemplary embodiment, a mobile station may call a terminating node. An intermediate entity may search an identifier of the terminating node for a predetermined aspect. If the predetermined aspect is found, the terminating node may be a mobile station, and the intermediate entity may perform a vocoder bypass. If the predetermined aspect is not found, the terminating node may be a non-mobile station, and the intermediate entity may perform vocoding.
    Type: Grant
    Filed: January 12, 2005
    Date of Patent: August 3, 2010
    Assignee: Spreint Spectrum L.P.
    Inventors: Dae-Sik Oh, Deuk-Ho Ryu, Leo Ray Anderson
  • Patent number: 7260399
    Abstract: A method for handing off a wireless communication session between a first radio network and a second radio network. The method includes handing off the wireless communication session from the first wireless communication to the second radio network based on a first trigger. The method also includes handing off the wireless communication session from the second wireless communication to the first radio network based on a second trigger, wherein the second trigger is different than the first trigger.
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: August 21, 2007
    Assignee: Sprint Spectrum L.P.
    Inventors: Dae-Sik Oh, Deuk-Ho Ryu, Leo Anderson
  • Patent number: 7251480
    Abstract: A method and system for sending a voice message in a wireless communication network. A mobile station may encode an audio speech signal into a voice mail message and send the voice mail message through a wireless network to a voice mail server. An entity of the wireless network may first receive the message and determine if an intended recipient is another mobile station. If so, the entity may simply forward to voice mail message on to the voice mail server. If not, the entity may transcode the voice mail message into another format and then send the formatted voice mail message to the voice mail server, which stores the voice mail message for later delivery to the intended recipient.
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: July 31, 2007
    Assignee: Sprint Spectrum L.P.
    Inventors: Dae-Sik Oh, Deuk-Ho Ryu, Leo Ray Anderson, Jr.
  • Publication number: 20050124386
    Abstract: A system and method are provided for using differentiated telephone numbers to determine whether to perform a vocoder bypass. In an exemplary embodiment, a mobile station may call a terminating node. An intermediate entity may search an identifier of the terminating node for a predetermined aspect. If the predetermined aspect is found, the terminating node may be a mobile station, and the intermediate entity may perform a vocoder bypass. If the predetermined aspect is not found, the terminating node may be a non-mobile station, and the intermediate entity may perform vocoding.
    Type: Application
    Filed: January 12, 2005
    Publication date: June 9, 2005
    Applicant: Sprint Spectrum L.P.
    Inventors: Dae-Sik Oh, Deuk-Ho Ryu, Leo Anderson
  • Patent number: 6879833
    Abstract: A system and method are provided for using differentiated telephone numbers to determine whether to perform a vocoder bypass. In an exemplary embodiment, a mobile station may call a terminating node. An intermediate entity may search an identifier of the terminating node for a predetermined aspect. If the predetermined aspect is found, the terminating node may be a mobile station, and the intermediate entity may perform a vocoder bypass. If the predetermined aspect is not found, the terminating node may be a non-mobile station, and the intermediate entity may perform vocoding.
    Type: Grant
    Filed: July 11, 2002
    Date of Patent: April 12, 2005
    Assignee: Sprint Spectrum L.P.
    Inventors: Dae-Sik Oh, Deuk-Ho Ryu, Leo Ray Anderson
  • Patent number: 6865391
    Abstract: A system and method are provided for using electronic serial numbers (ESNS) to determine whether to perform vocoder bypass. In an exemplary embodiment, a terminal device may share a common mobile identification number (MIN) with other terminal devices. The terminal device may answer a page and provide its ESN to an intermediate entity. The intermediate entity may query a database to determine whether the answering terminal device is a mobile station. The intermediate entity may perform vocoding if the answering terminal device is a non-mobile station, or vocoder bypass if the answering terminal device is a mobile station.
    Type: Grant
    Filed: July 11, 2002
    Date of Patent: March 8, 2005
    Assignee: Sprint Spectrum L.P.
    Inventors: Dae-Sik Oh, Deuk-Ho Ryu, Leo Ray Anderson, Shiva Narayanabhatla
  • Publication number: 20040009787
    Abstract: A system and method are provided for using differentiated telephone numbers to determine whether to perform a vocoder bypass. In an exemplary embodiment, a mobile station may call a terminating node. An intermediate entity may search an identifier of the terminating node for a predetermined aspect. If the predetermined aspect is found, the terminating node may be a mobile station, and the intermediate entity may perform a vocoder bypass. If the predetermined aspect is not found, the terminating node may be a non-mobile station, and the intermediate entity may perform vocoding.
    Type: Application
    Filed: July 11, 2002
    Publication date: January 15, 2004
    Applicant: Sprint Spectrum L.P.
    Inventors: Dae-Sik Oh, Deuk-Ho Ryu, Leo Ray Anderson