Patents by Inventor Joon Ho Oum

Joon Ho Oum 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).

  • Signal level conversion circuit for increasing dynamic range of analog-to-digital converter
    Patent number: 7656328
    Abstract: Disclosed herein is a signal level conversion circuit for increasing the dynamic range of an Analog-to-Digital Converter (ADC). A comparison and calculation unit compares the value of an input signal Vin and the value of a first reference signal Vref1 and compares the value of the input signal Vin and the value of a second reference signal Vref2, and calculates and outputs respective differences therebetween. A signal leveling circuit unit converts signal levels of the respective output signals of the comparison and calculation unit so that the output signals fall within the dynamic range of an ADC. The ADC digitizes the output signal Vo of the signal leveling circuit unit and the output signals Vack1 and Vack2 of the comparison and calculation unit.
    Type: Grant
    Filed: June 4, 2008
    Date of Patent: February 2, 2010
    Assignee: Korea Advanced Institute of Science & Technology
    Inventors: Songcheol Hong, Joon Ho Oum
  • SIGNAL LEVEL CONVERSION CIRCUIT FOR INCREASING DYNAMIC RANGE OF ANALOG-TO-DIGITAL CONVERTER
    Publication number: 20090128390
    Abstract: Disclosed herein is a signal level conversion circuit for increasing the dynamic range of an Analog-to-Digital Converter (ADC). A comparison and calculation unit compares the value of an input signal Vin and the value of a first reference signal Vref1 and compares the value of the input signal Vin and the value of a second reference signal Vref2, and calculates and outputs respective differences therebetween. A signal leveling circuit unit converts signal levels of the respective output signals of the comparison and calculation unit so that the output signals fall within the dynamic range of an ADC. The ADC digitizes the output signal Vo of the signal leveling circuit unit and the output signals Vack1 and Vack2 of the comparison and calculation unit.
    Type: Application
    Filed: June 4, 2008
    Publication date: May 21, 2009
    Applicant: Korea Advanced Institute of Science and Technology
    Inventors: Songcheol HONG, Joon Ho Oum