Patents by Inventor Bo Hyun Hwang

Bo Hyun Hwang 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).

  • Inverter driver integrated circuit
    Patent number: 7898298
    Abstract: An inverter driver integrated circuit (IC) includes a control signal generator generating a first control signal and a second control signal by use of a pulse width modulation oscillator signal, a comparator comparing a half-wave rectified signal of a lamp feedback signal fed back from a lamp with a preset reference signal to output a lamp state signal, a first sensor receiving the lamp state signal and the second control signal to output a first sensing signal, and a second sensor receiving the first sensing signal and the first control signal to output a second sensing signal.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: March 1, 2011
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Bo Hyun Hwang, Byoung Own Min, Jeong In Cheon, Yun Jin Jang, Seung Kon Kong, Sang Cheol Shin
  • INVERTER DRIVER INTEGRATED CIRCUIT
    Publication number: 20100141300
    Abstract: An inverter driver integrated circuit (IC) includes a control signal generator generating a first control signal and a second control signal by use of a pulse width modulation oscillator signal, a comparator comparing a half-wave rectified signal of a lamp feedback signal fed back from a lamp with a preset reference signal to output a lamp state signal, a first sensor receiving the lamp state signal and the second control signal to output a first sensing signal, and a second sensor receiving the first sensing signal and the first control signal to output a second sensing signal.
    Type: Application
    Filed: May 8, 2009
    Publication date: June 10, 2010
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Bo Hyun Hwang, Byoung Own Min, Jeong In Cheon, Yu Jin Jang, Seung Kon Kong, Sang Cheol Shin
  • APPARATUS AND METHOD FOR FEEDFORWARD-TYPE PHASE NOISE ELIMINATION IN PORTABLE TERMINAL
    Publication number: 20100048150
    Abstract: The present invention relates to an apparatus and method for feedforward-type phase noise elimination in a portable terminal, which detect and eliminate phase-reversed phase noise by subtracting a GSM transmission signal, passed through the power amplifier of a GSM transmission device, from a GSM transmission signal, extracted from an upstream stage of the power amplifier, so that phase noise signals attributable to high-power transmission signals.
    Type: Application
    Filed: October 21, 2008
    Publication date: February 25, 2010
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventor: Bo Hyun HWANG