Patents by Inventor Jinseok Koh

Jinseok Koh 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).

  • Systems and methods for mismatch cancellation in switched capacitor circuits
    Patent number: 7136006
    Abstract: Various circuits, systems and methods are disclosed for providing double-sampling sigma-delta modulator circuits. For example, circuits are disclosed that include an amplifier with an integrating capacitor, a switched capacitor conversion element that includes a single capacitor bank, and a control element that provides phase signaling that identifies at least two phases. In operation, charge present on the single capacitor bank is transferred to the integrating capacitor and the single capacitor bank is charged during one phase. During the other phase, charge present on the single capacitor bank is transferred to the integrating capacitor, and the single capacitor bank is discharged.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: November 14, 2006
    Assignee: Texas Instruments Incorporated
    Inventors: Jinseok Koh, Alexander H. Reyes
  • Systems and methods for mismatch cancellation in switched capacitor circuits
    Publication number: 20060132341
    Abstract: Various circuits, systems and methods are disclosed for providing double-sampling sigma-delta modulator circuits. For example, circuits are disclosed that include an amplifier with an integrating capacitor, a switched capacitor conversion element that includes a single capacitor bank, and a control element that provides phase signaling that identifies at least two phases. In operation, charge present on the single capacitor bank is transferred to the integrating capacitor and the single capacitor bank is charged during one phase. During the other phase, charge present on the single capacitor bank is transferred to the integrating capacitor, and the single capacitor bank is discharged.
    Type: Application
    Filed: June 23, 2005
    Publication date: June 22, 2006
    Applicant: Texas Instruments Incorporated
    Inventors: Jinseok Koh, Alexander Reyes
  • Higher order sigma-delta analog-to-digital converter based on finite impulse response filter
    Patent number: 6842128
    Abstract: A sigma-delta ADC includes a higher order infinite impulse response (IIR) filter based on a finite impulse response (FIR) filter and possesses the same functionality as a conventional sigma-delta ADC in terms of noise and swings at the output of the analog integrators. The higher order sigma-delta ADC requires only one analog amplifier however, even though it has a higher order analog integration function.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: January 11, 2005
    Assignee: Texas Instruments Incorporated
    Inventor: Jinseok Koh
  • Higher order sigma-delta analog-to-digital converter based on finite impulse response filter
    Publication number: 20040169596
    Abstract: A sigma-delta ADC includes a higher order infinite impulse response (IIR) filter based on a finite impulse response (FIR) filter and possesses the same functionality as a conventional sigma-delta ADC in terms of noise and swings at the output of the analog integrators. The higher order sigma-delta ADC requires only one analog amplifier however, even though it has a higher order analog integration function.
    Type: Application
    Filed: February 28, 2003
    Publication date: September 2, 2004
    Inventor: Jinseok Koh