Patents by Inventor Chulkwon Lee

Chulkwon 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).

  • Patent number: 10602144
    Abstract: The present disclosure relates a method for compressing data and a display device using the same, which firstly generates a quantization grid to which a quantization step value is assigned at positions thereon corresponding to positions of the plurality of pixels, assigns the quantization step value using a preset quantization parameter and a quantization function determined according to a dimension of an array, and quantizes data, which is assigned to a pixel located at a position corresponding to a position of the quantization step value, using the quantization step value when the quantization step value is assigned. As such, in accordance with the present disclosure, it may prevent a data loss due to compression of data from being concentrated on pixels located at specific concentrated positions. That is, in accordance with the present disclosure, a data loss due to quantization may be spatially distributed.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: March 24, 2020
    Assignees: LG DISPLAY CO., LTD., SAINT-PETERSBURG STATE UNIVERSITY OF AEROSPACE INSTRUMENTATION
    Inventors: Marat Gilmutdinov, Euiyeol Oh, Chulkwon Lee, Nickolay Egorov
  • Patent number: 10200685
    Abstract: A method of compressing data comprising separating a bit stream of compensation data into a sub-bit stream including an impulse component and a sub-bit stream not including the impulse component, predicting and calculating a trend component of compensation data to be compressed using compressed compensation data, generating a noise component by eliminating the trend component from the compensation data, and separating and compressing an impulse component and a noise component of the compensation data from each other, wherein the impulse component is compressed without quantization and the noise component is quantized and compressed.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: February 5, 2019
    Assignees: LG DISPLAY CO., LTD., SAINT-PETERSBURG STATE UNIVERSITY OF AEROSPACE INSTRUMENTATION
    Inventors: Marat Gilmutdinov, Euiyeol Oh, Chulkwon Lee, Nickolay Egorov
  • Publication number: 20170359574
    Abstract: A method of compressing data comprising separating a bit stream of compensation data into a sub-bit stream including an impulse component and a sub-bit stream not including the impulse component, predicting and calculating a trend component of compensation data to be compressed using compressed compensation data, generating a noise component by eliminating the trend component from the compensation data, and separating and compressing an impulse component and a noise component of the compensation data from each other, wherein the impulse component is compressed without quantization and the noise component is quantized and compressed.
    Type: Application
    Filed: January 18, 2017
    Publication date: December 14, 2017
    Inventors: Marat GILMUTDINOV, Euiyeol OH, Chulkwon LEE, Nickolay EGOROV
  • Publication number: 20170347098
    Abstract: The present disclosure relates a method for compressing data and a display device using the same, which firstly generates a quantization grid to which a quantization step value is assigned at positions thereon corresponding to positions of the plurality of pixels, assigns the quantization step value using a preset quantization parameter and a quantization function determined according to a dimension of an array, and quantizes data, which is assigned to a pixel located at a position corresponding to a position of the quantization step value, using the quantization step value when the quantization step value is assigned. As such, in accordance with the present disclosure, it may prevent a data loss due to compression of data from being concentrated on pixels located at specific concentrated positions. That is, in accordance with the present disclosure, a data loss due to quantization may be spatially distributed.
    Type: Application
    Filed: January 12, 2017
    Publication date: November 30, 2017
    Inventors: Marat Gilmutdinov, Euiyeol Oh, Chulkwon Lee, Nickolay Egorov
  • Patent number: 8797256
    Abstract: An electrophoresis display is provided to reduce writing time of a memory. The electrophoresis display includes: an electrophoresis display panel; a first memory and a second memory for alternatively storing a previous state image and a current state image; and a controller sets the first digital data generated by the system as the current state image and stores it alternately in one of the first and second memories every cycle, keeps storing the first digital data previously stored in the other one of the first and second memories in it as the previous state image, compares the current state image and the previous state image, and generates second digital data to be displayed on the electrophoresis display panel by use of waveform information corresponding to the result of the comparison among the plurality of waveform information.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: August 5, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Seungseok Nam, Chulkwon Lee
  • Publication number: 20100134504
    Abstract: An electrophoresis display is provided to reduce writing time of a memory. The electrophoresis display includes: an electrophoresis display panel; a first memory and a second memory for alternatively storing a previous state image and a current state image; and a controller sets the first digital data generated by the system as the current state image and stores it alternately in one of the first and second memories every cycle, keeps storing the first digital data previously stored in the other one of the first and second memories in it as the previous state image, compares the current state image and the previous state image, and generates second digital data to be displayed on the electrophoresis display panel by use of waveform information corresponding to the result of the comparison among the plurality of waveform information.
    Type: Application
    Filed: November 16, 2009
    Publication date: June 3, 2010
    Inventors: Seungseok NAM, Chulkwon Lee