Patents by Inventor Jun-Gi Jo

Jun-Gi Jo 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).

  • Dual mode satellite signal receiver and method thereof
    Patent number: 8184048
    Abstract: A dual mode satellite signal receiver capable of supporting at least two global navigation satellite systems and a satellite signal receiving method are provided. The dual mode satellite signal receiver comprises a frequency synthesizer for generating a local oscillator signal based on a reference frequency; a mixer for mixing the local oscillator signal with a satellite signal and outputting the mixed signal as a signal of an intermediate frequency band; a first filter for filtering the signal output from the mixer to reject an image signal and output only an actual signal; a second filter for filtering the actual signal to output only a predetermined bandwidth according to a positioning mode; and an amplifier for amplifying the second filter output signal to a predetermined level and outputting the amplified signal.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: May 22, 2012
    Assignee: Core Logic, Inc.
    Inventors: Chang-Sik Yoo, Jun-Gi Jo, Seong-Eon Park
  • DUAL MODE SATELLITE SIGNAL RECEIVER AND METHOD THEREOF
    Publication number: 20090219204
    Abstract: A dual mode satellite signal receiver capable of supporting at least two global navigation satellite systems and a satellite signal receiving method are provided. The dual mode satellite signal receiver comprises a frequency synthesizer for generating a local oscillator signal based on a reference frequency; a mixer for mixing the local oscillator signal with a satellite signal and outputting the mixed signal as a signal of an intermediate frequency band; a first filter for filtering the signal output from the mixer to reject an image signal and output only an actual signal; a second filter for filtering the actual signal to output only a predetermined bandwidth according to a positioning mode; and an amplifier for amplifying the second filter output signal to a predetermined level and outputting the amplified signal.
    Type: Application
    Filed: February 26, 2009
    Publication date: September 3, 2009
    Inventors: Chang-Sik Yoo, Jun-Gi Jo, Seong-Eon Park