Patents by Inventor So-won Lee

So-won Lee 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).

  • Method and apparatus for performing writing test using charge pumps in optical disk reproducing and recording apparatus
    Patent number: 7477580
    Abstract: Provided are a method and apparatus for performing a writing test using charge pumps in an optical disk reproducing/recording apparatus. In the apparatus for performing the writing test, an optimum power control (OPC) determining unit determines a phase of a radio frequency signal using a reference voltage, and generates a corresponding OPC voltage; an analog-to-digital converter (ADC) unit converts the OPC voltage into a digital signal; and a micom controls a power control unit according to the digital signal, to appropriately control laser power.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: January 13, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: So-won Lee
  • Method and apparatus for performing writing test using charge pumps in optical disk reproducing and recording apparatus
    Publication number: 20060114781
    Abstract: Provided are a method and apparatus for performing a writing test using charge pumps in an optical disk reproducing/recording apparatus. In the apparatus for performing the writing test, an optimum power control (OPC) determining unit determines a phase of a radio frequency signal using a reference voltage, and generates a corresponding OPC voltage; an analog-to-digital converter (ADC) unit converts the OPC voltage into a digital signal; and a micom controls a power control unit according to the digital signal, to appropriately control laser power.
    Type: Application
    Filed: November 29, 2005
    Publication date: June 1, 2006
    Inventor: So-won Lee