Patents by Inventor Donghwan Son

Donghwan Son 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).

  • Patent number: 8473878
    Abstract: During a calculation technique, at least a portion of a target pattern associated with an integrated-circuit design is modified so that polygons in the target pattern, which represent features in the design, result in acceptable accuracy during a photolithographic process that fabricates the target pattern on a semiconductor die. In particular, a set of polygon parameters associated with the polygons are modified, as needed, so that a cost function that corresponds to a difference between a modified target pattern and an estimated target pattern produced during the photolithographic process meets a termination criterion. A mask pattern that can fabricate the modified target pattern on the semiconductor die is calculated using an inverse optical calculation in which the modified target pattern is at an image plane of an optical path associated with the photolithographic process and the mask pattern is at an object plane of the optical path.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: June 25, 2013
    Assignee: Synopsys, Inc.
    Inventors: Tatung Chow, Changqing Hu, Donghwan Son, David H. Kim, Thomas C. Cecil
  • Publication number: 20130139116
    Abstract: During a calculation technique, at least a portion of a target pattern associated with an integrated-circuit design is modified so that polygons in the target pattern, which represent features in the design, result in acceptable accuracy during a photolithographic process that fabricates the target pattern on a semiconductor die. In particular, a set of polygon parameters associated with the polygons are modified, as needed, so that a cost function that corresponds to a difference between a modified target pattern and an estimated target pattern produced during the photolithographic process meets a termination criterion. A mask pattern that can fabricate the modified target pattern on the semiconductor die is calculated using an inverse optical calculation in which the modified target pattern is at an image plane of an optical path associated with the photolithographic process and the mask pattern is at an object plane of the optical path.
    Type: Application
    Filed: November 28, 2011
    Publication date: May 30, 2013
    Applicant: Luminescent Technologies, Inc.
    Inventors: Tatung Chow, Changqing Hu, Donghwan Son, David H. Kim, Thomas C. Cecil
  • Publication number: 20110247050
    Abstract: Provided is a method of pairing terminals with each other, and a terminal for the method. The method includes sensing a physical motion of a terminal caused by a user and outputting a sensing value, comparing a reception value received from an external terminal with the sensing value, and establishing a communication path with the external terminal according to the comparison result.
    Type: Application
    Filed: March 31, 2011
    Publication date: October 6, 2011
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Donghwan Son, Jin-Mee Kim, Shin-Young Ahn, Sung-Won Yi, Jong-Sung Kim, Ji-Yong Kim, Hyeon-Jin Kim, Sung-Ho Im, Seung-Jo Bae, Kyoung Park, Wan Choi
  • Publication number: 20070136615
    Abstract: Provided is a system and method of controlling power, the system and method capable of predicting optimal speeds of operation clocks of a central processing unit (CPU) and a memory used to execute an application program, thereby reducing power used to execute the application program. The system for controlling power includes a requirement prediction module predicting a requirement of central processing unit (CPU) performance and a requirement of memory usage for executing the application program; an operation clock determining unit determining optimal speeds of operation clocks of the CPU and the memory for executing the application program based on the requirements; and a clock speed/driving voltage generating unit generating optimal speeds of the operation clocks and optimal driving voltages of the CPU and the memory for executing the application program based on the determined optimal speeds of the operation clocks.
    Type: Application
    Filed: December 7, 2006
    Publication date: June 14, 2007
    Inventors: Donghwan Son, Jung Lee, Hyung Lee
  • Patent number: 6944229
    Abstract: There is provided an apparatus and method for MPEG decoding using dynamically varying voltage and frequency of a processor, wherein an operation frequency and voltage of the processor is set depending on a difference between the number of current frames and that of set frames, in correspondence with the interrupt generated during decoding frames until a next interrupt is generated, to thereby support a real-time decoding. The method herein includes the steps of predicting decoding time until the next interrupt from the current interrupt is generated depending on both a type and size of frames and the system speed.
    Type: Grant
    Filed: April 11, 2002
    Date of Patent: September 13, 2005
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Donghwan Son, Chansu Yu, Heung-Nam Kim
  • Publication number: 20030118112
    Abstract: There is provided an apparatus and method for MPEG decoding using dynamically varying voltage and frequency of a processor, wherein an operation frequency and voltage of the processor is set depending on a difference between the number of current frames and that of set frames, in correspondence with the interrupt generated during decoding frames until a next interrupt is generated, to thereby support a real-time decoding. The method herein includes the steps of predicting decoding time until the next interrupt from the current interrupt is generated depending on both a type and size of frames and the system speed.
    Type: Application
    Filed: April 11, 2002
    Publication date: June 26, 2003
    Inventors: Donghwan Son, Chansu Yu, Heung-Nam Kim