Patents by Inventor Chang-jin Choi

Chang-jin Choi 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: 8019273
    Abstract: A mobile communication terminal to automatically access to DMB includes a broadcast receiving unit that receives and demodulates a DMB signal, extracts and processes a video signal and an audio signal from the DMB signal, and outputs the video signal and the audio signal to a display unit and an audio output unit; a channel information acquisition unit that processes an audio signal inputted from a microphone in an automatic channel access mode, generates and transmits to a channel information providing server a channel access information request message that includes the audio signal and time information concerning the time when the audio signal is input, and receives and outputs a channel access information response message; and a broadcast control unit that outputs a channel tuning control signal to the broadcast receiving unit according to the channel access information inputted from the channel information acquisition unit.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: September 13, 2011
    Assignee: Pantech Co., Ltd.
    Inventors: Chang-jin Choi, Joon-young Jang
  • Publication number: 20100240967
    Abstract: A belt with a health management function includes a health information extraction module extracting health related information from various biomedical signals, a buckle housing the health information extraction module, and a strap connected to an end of the buckle. The health information extraction module includes a sensor module detecting various biomedical signals, and a process/extraction unit digitally processing the detected biomedical signals and extracting the health related information from the processed digital signals.
    Type: Application
    Filed: March 27, 2008
    Publication date: September 23, 2010
    Inventors: Seunghwan Kim, Sun-Hee Park, Soo-Young Oh, Kwang-Ho Pyun, Kyung-Soo Kim, In-Sop Shim, Hyen-Oh La, Chang-Jin Choi, Se-Hong Kim
  • Publication number: 20090293094
    Abstract: A mobile communication terminal to automatically access to DMB includes a broadcast receiving unit that receives and demodulates a DMB signal, extracts and processes a video signal and an audio signal from the DMB signal, and outputs the video signal and the audio signal to a display unit and an audio output unit; a channel information acquisition unit that processes an audio signal inputted from a microphone in an automatic channel access mode, generates and transmits to a channel information providing server a channel access information request message that includes the audio signal and time information concerning the time when the audio signal is input, and receives and outputs a channel access information response message; and a broadcast control unit that outputs a channel tuning control signal to the broadcast receiving unit according to the channel access information inputted from the channel information acquisition unit.
    Type: Application
    Filed: July 28, 2009
    Publication date: November 26, 2009
    Applicant: PANTECH&CURITEL COMMUNICATIONS, INC.
    Inventors: Chang-Jin Choi, Joon-young Jang
  • Patent number: 7583929
    Abstract: Disclosed is a mobile communication terminal automatically accessing to DMB, including: a broadcast receiving unit that receives and demodulates a DMB signal, extracts and processes a video signal and an audio signal from the DMB signal, and outputs the video signal and the audio signal to a display unit and an audio output unit, respectively; a channel information acquisition unit that processes an audio signal inputted from a microphone of the mobile communication terminal in an automatic channel access mode, generates and transmits to a channel information providing server a channel access information request message that includes the audio signal and time information concerning the time when the audio signal is input, and receives and outputs a channel access information response message; and a broadcast control unit that outputs a channel tuning control signal to the broadcast receiving unit according to the channel access information inputted from the channel information acquisition unit.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: September 1, 2009
    Assignee: Pantech & Curitel Communications, Inc.
    Inventors: Chang-jin Choi, Joon-young Jang
  • Publication number: 20070021051
    Abstract: Disclosed is a mobile communication terminal automatically accessing to DMB, including: a broadcast receiving unit that receives and demodulates a DMB signal, extracts and processes a video signal and an audio signal from the DMB signal, and outputs the video signal and the audio signal to a display unit and an audio output unit, respectively; a channel information acquisition unit that processes an audio signal inputted from a microphone of the mobile communication terminal in an automatic channel access mode, generates and transmits to a channel information providing server a channel access information request message that includes the audio signal and time information concerning the time when the audio signal is input, and receives and outputs a channel access information response message; and a broadcast control unit that outputs a channel tuning control signal to the broadcast receiving unit according to the channel access information inputted from the channel information acquisition unit.
    Type: Application
    Filed: May 22, 2006
    Publication date: January 25, 2007
    Inventors: Chang-jin Choi, Joon-young Jang