Patents by Inventor Kyoo-Chul Choi

Kyoo-Chul 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).

  • Power protecting apparatus and method for power amplifier
    Patent number: 7482877
    Abstract: A power protecting apparatus and method of a power amplifier for removing backward voltages and preventing a hard damage within a circuit by connecting an output terminal of a DC-DC converter with an input terminal of a filter using diodes when an excessive backward voltage is generated due to physical characteristics of an inductor within the circuit at the time of applying high power level and low power level to the power amplifier using switching devices within a power circuit in order to optimize power consumption.
    Type: Grant
    Filed: March 23, 2006
    Date of Patent: January 27, 2009
    Inventors: Kun-Wook Kim, Kyoo-Chul Choi
  • Power protecting apparatus and method for power amplifier
    Publication number: 20060214734
    Abstract: A power protecting apparatus and method of a power amplifier for removing backward voltages and preventing a hard damage within a circuit by connecting an output terminal of a DC-DC converter with an input terminal of a filter using diodes when an excessive backward voltage is generated due to physical characteristics of an inductor within the circuit at the time of applying high power level and low power level to the power amplifier using switching devices within a power circuit in order to optimize power consumption.
    Type: Application
    Filed: March 23, 2006
    Publication date: September 28, 2006
    Inventors: Kun-Wook Kim, Kyoo-Chul Choi
  • Method for enhancing a digital rights management function of a data terminal
    Publication number: 20060156417
    Abstract: Disclosed is a method for enhancing a digital rights management (DRM) function of a data terminal which includes receiving a request to reset a real-time clock (RTC), receiving an updated RTC time from a user, calculating and storing a difference value corresponding to a difference between a current RTC time and the updated RTC time, and setting a current time of the data terminal based on the updated RTC time and the stored difference value.
    Type: Application
    Filed: January 6, 2006
    Publication date: July 13, 2006
    Applicant: LG Electronics Inc.
    Inventor: Kyoo-Chul Choi