Patents by Inventor Masahiko Takiguchi

Masahiko Takiguchi 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: 11922902
    Abstract: An image processor of a display device includes: an image sticking object detector which classifies a class of an input image data and outputs inference data including image sticking object information based on the classified class; a memory which stores previous inference data; a post-processor which calculates accumulative inference data, based on the inference data and the previous inference data received from the memory and generates corrected inference data, based on the accumulative inference data; and an image sticking prevention part which outputs an image data subjected to an image sticking prevention process, based on the corrected inference data.
    Type: Grant
    Filed: August 18, 2021
    Date of Patent: March 5, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Satoshi Uchino, Kazuhiro Matsumoto, Masahiko Takiguchi, Yasuhiko Shinkaji
  • Patent number: 11893746
    Abstract: The present disclosure describes an image processor of a display device. The image processing includes a pre-processor, a segmentation processor, and a correction processor. The pre-processor performs spatial filtering on an input image signal and output a line image signal. The segmentation processor classifies a class of the line image signal and outputting a segmentation signal representing the class. The correction processor corrects the segmentation signal based on the line image signal. Additionally, the correction processor detects a class boundary of the segmentation signal, detects an edge within an edge region of the line image signal corresponding to the class boundary, and corrects the segmentation signal based on the detected edge.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: February 6, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yasuhiko Shinkaji, Kazuhiro Matsumoto, Masahiko Takiguchi
  • Publication number: 20230325028
    Abstract: An electronic device includes a display panel, a sensor layer disposed on the display panel and including a plurality of sensing electrodes, and a sensor driver connected with the plurality of sensing electrodes to drive the sensor layer. The sensor driver includes a plurality of analog-to-digital converters that samples an input signal received from the outside by the sensor layer. The plurality of analog-to-digital converters is connected one-to-one with the plurality of sensing electrodes.
    Type: Application
    Filed: February 9, 2023
    Publication date: October 12, 2023
    Inventors: Satoshi UCHINO, Kazuhiro MATSUMOTO, Masahiko TAKIGUCHI
  • Publication number: 20230280863
    Abstract: A display device includes a display panel, an input sensing layer disposed on the display panel and which outputs a sensing signal in response to an external input and an approach of an object, and a sensing controller which controls a drive of the input sensing layer and receives the sensing signal from the input sensing layer. The sensing controller includes a location sensing block which generates a location information signal including location information of the external input in response to the sensing signal, and an approach sensing block which determines whether the object approaches in response to the sensing signal and generates an approach information signal.
    Type: Application
    Filed: January 10, 2023
    Publication date: September 7, 2023
    Inventors: Kazuhiro MATSUMOTO, Masahiko TAKIGUCHI, Satoshi UCHINO
  • Patent number: 11521576
    Abstract: The present disclosure provides a display device that includes a preprocessor, a controller, and a display panel. The preprocessor includes an area determiner outputting area data, a modulator outputting modulated data, and a synthesizer converting first image data and outputting second image data including the area data and the modulated data.
    Type: Grant
    Filed: November 12, 2020
    Date of Patent: December 6, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kazuhiro Matsumoto, Yasuhiko Shinkaji, Masahiko Takiguchi
  • Patent number: 11475816
    Abstract: Disclosed is an image processor of a display device including a segmentation processing module classifying a background and a text of an image signal and outputting a segmentation signal, a class classification processing module outputting a class signal based on the segmentation signal, a memory storing broadcast information signals, a correction processing module correcting an image signal based on the segmentation signal and a broadcast information signal corresponding to the class signal among the broadcast information signals and outputting a correction segmentation signal, and a data signal output module preventing an afterimage of the image signal based on the correction segmentation signal and outputting a data signal.
    Type: Grant
    Filed: October 25, 2021
    Date of Patent: October 18, 2022
    Inventors: Yasuhiko Shinkaji, Kazuhiro Matsumoto, Masahiko Takiguchi
  • Publication number: 20220254287
    Abstract: Disclosed is an image processor of a display device including a segmentation processing module classifying a background and a text of an image signal and outputting a segmentation signal, a class classification processing module outputting a class signal based on the segmentation signal, a memory storing broadcast information signals, a correction processing module correcting an image signal based on the segmentation signal and a broadcast information signal corresponding to the class signal among the broadcast information signals and outputting a correction segmentation signal, and a data signal output module preventing an afterimage of the image signal based on the correction segmentation signal and outputting a data signal.
    Type: Application
    Filed: October 25, 2021
    Publication date: August 11, 2022
    Inventors: Yasuhiko SHINKAJI, Kazuhiro MATSUMOTO, Masahiko TAKIGUCHI
  • Publication number: 20220207335
    Abstract: A neural network processing device includes: a convolution part which receives an input signal and a learning completion weight parameter, performs a convolution operation on the input signal and the learning completion weight parameter, and outputs a convolution signal that is a result value of the convolution operation; a batch adjustment which receives the convolution signal and a learning completion normalization parameter, and outputs an adjustment signal obtained by adjusting an output deviation of the convolution signal; and an activation part which converts the adjustment signal into an output signal based on an activation function.
    Type: Application
    Filed: September 16, 2021
    Publication date: June 30, 2022
    Inventors: Masahiko TAKIGUCHI, Kazuhiro MATSUMOTO
  • Patent number: 11355084
    Abstract: The present disclosure provides a display device. The display device includes a controller and a display panel displaying an image. The controller includes a detector, a compensator, and a converter. The detector separates image data into first image data corresponding to a first image recognized as a non-afterimage component and second image data corresponding to a second image recognized as an afterimage component using a pre-trained deep neural network. The compensator outputs a compensation signal to control a luminance value of the second image data. The converter converts the first image data to first converted image data and converting the second image data to second converted image data based on the compensation signal.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: June 7, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kazuhiro Matsumoto, Masahiko Takiguchi
  • Publication number: 20220157275
    Abstract: An image processor of a display device includes: an image sticking object detector which classifies a class of an input image data and outputs inference data including image sticking object information based on the classified class; a memory which stores previous inference data; a post-processor which calculates accumulative inference data, based on the inference data and the previous inference data received from the memory and generates corrected inference data, based on the accumulative inference data; and an image sticking prevention part which outputs an image data subjected to an image sticking prevention process, based on the corrected inference data.
    Type: Application
    Filed: August 18, 2021
    Publication date: May 19, 2022
    Inventors: Satoshi UCHINO, Kazuhiro MATSUMOTO, Masahiko TAKIGUCHI, Yasuhiko SHINKAJI
  • Publication number: 20210241459
    Abstract: The present disclosure describes an image processor of a display device. The image processing includes a pre-processor, a segmentation processor, and a correction processor. The pre-processor performs spatial filtering on an input image signal and output a line image signal. The segmentation processor classifies a class of the line image signal and outputting a segmentation signal representing the class. The correction processor corrects the segmentation signal based on the line image signal. Additionally, the correction processor detects a class boundary of the segmentation signal, detects an edge within an edge region of the line image signal corresponding to the class boundary, and corrects the segmentation signal based on the detected edge.
    Type: Application
    Filed: December 10, 2020
    Publication date: August 5, 2021
    Inventors: Yasuhiko SHINKAJI, Kazuhiro MATSUMOTO, Masahiko TAKIGUCHI
  • Publication number: 20210225327
    Abstract: The present disclosure provides a display device. The display device includes a controller and a display panel displaying an image. The controller includes a detector, a compensator, and a converter. The detector separates image data into first image data corresponding to a first image recognized as a non-afterimage component and second image data corresponding to a second image recognized as an afterimage component using a pre-trained deep neural network. The compensator outputs a compensation signal to control a luminance value of the second image data. The converter converts the first image data to first converted image data and converting the second image data to second converted image data based on the compensation signal.
    Type: Application
    Filed: November 23, 2020
    Publication date: July 22, 2021
    Inventors: Kazuhiro Matsumoto, Masahiko Takiguchi
  • Patent number: 11011136
    Abstract: An image data processing device of the inventive concept includes an image data converter and a light emission amount calculator. The image data converter converts image data into modulation image data. The image data includes first to third data corresponding to the first to third colors, respectively. The modulation image data includes first to fourth modulation data corresponding to the first to fourth colors, respectively. The light emission amount calculator calculates the fourth modulation data based on the ratio between the first data and the second data. The fourth color includes a color based on mixing the first color and the second color.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: May 18, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventor: Masahiko Takiguchi
  • Publication number: 20200135143
    Abstract: An image data processing device of the inventive concept includes an image data converter and a light emission amount calculator. The image data converter converts image data into modulation image data. The image data includes first to third data corresponding to the first to third colors, respectively. The modulation image data includes first to fourth modulation data corresponding to the first to fourth colors, respectively. The light emission amount calculator calculates the fourth modulation data based on the ratio between the first data and the second data. The fourth color includes a color based on mixing the first color and the second color.
    Type: Application
    Filed: August 1, 2019
    Publication date: April 30, 2020
    Inventor: Masahiko TAKIGUCHI
  • Patent number: 10360872
    Abstract: A display device includes a controller that generates first and second sub-frame image signals based on a frame image signal. The first and second sub-frame image signals respectively correspond to sub-frames. The controller includes a filter, a signal generator, and a signal output. The filter outputs a high frequency image signal, obtained by increasing a high frequency component in the frame image signal, and a low frequency image signal obtained by decreasing the high frequency component in the frame image signal. The signal generator generates an excess signal from a portion of the high frequency image signal having a grayscale value equal to or greater than a maximum allowable grayscale value. The signal output selectively outputs the first sub-frame image signal based on the excess signal and the high frequency image signal and the second sub-frame image signal based on the excess signal and the low frequency image signal.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: July 23, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Masahiko Takiguchi
  • Patent number: 10313678
    Abstract: An image signal processing apparatus includes an adder to add an input data signal of a present frame to a cumulative data signal of a previous frame to output a cumulative data signal, an analyzing block to analyze a processing range of the cumulative data signal, a processing block to process the cumulative data signal based on the processing range to output a processed data signal, an encoding block to compress the processed data signal to output an encoded data signal, a memory to store the encoded data signal and the processing range, a decoding block to decode the encoded data signal read out from the memory to output a decoded data signal, and an inverse processing block to inversely process the decoded data signal based on the processing range to output an output data signal.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: June 4, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventor: Masahiko Takiguchi
  • Publication number: 20190014327
    Abstract: An image signal processing apparatus includes an adder to add an input data signal of a present frame to a cumulative data signal of a previous frame to output a cumulative data signal, an analyzing block to analyze a processing range of the cumulative data signal, a processing block to process the cumulative data signal based on the processing range to output a processed data signal, an encoding block to compress the processed data signal to output an encoded data signal, a memory to store the encoded data signal and the processing range, a decoding block to decode the encoded data signal read out from the memory to output a decoded data signal, and an inverse processing block to inversely process the decoded data signal based on the processing range to output an output data signal.
    Type: Application
    Filed: January 3, 2018
    Publication date: January 10, 2019
    Inventor: Masahiko Takiguchi
  • Publication number: 20180137834
    Abstract: A display device includes a controller that generates first and second sub-frame image signals based on a frame image signal. The first and second sub-frame image signals respectively correspond to sub-frames. The controller includes a filter, a signal generator, and a signal output. The filter outputs a high frequency image signal, obtained by increasing a high frequency component in the frame image signal, and a low frequency image signal obtained by decreasing the high frequency component in the frame image signal. The signal generator generates an excess signal from a portion of the high frequency image signal having a grayscale value equal to or greater than a maximum allowable grayscale value. The signal output selectively outputs the first sub-frame image signal based on the excess signal and the high frequency image signal and the second sub-frame image signal based on the excess signal and the low frequency image signal.
    Type: Application
    Filed: November 7, 2017
    Publication date: May 17, 2018
    Inventor: Masahiko TAKIGUCHI
  • Patent number: 9275440
    Abstract: An image processing device (100) is configured such that an edge histogram creating section (130) calculates interproximal pixel luminance difference for each of pixels constituting a frame, and a first ratio, which is a ratio of pixels whose interproximal pixel luminance difference is greater than or equal to a first threshold, and an edge enhancement section (140) performs edge enhancement in such a way that a shoot component to be added is smaller for a frame having a larger first ratio.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: March 1, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Ichiro Mizobuchi, Akira Koike, Masahiko Takiguchi, Yoshinori Kohno
  • Patent number: 9256924
    Abstract: A video processing device (100) includes: an edge histogram generating section (141) and a noise reducing section (150). The generating section (141) generates an edge histogram of a decoded image obtained from a video signal. The noise reducing section (150) (i) determines whether or not a ratio of a sum of frequencies of classes higher than a predetermined class of an edge histogram to a sum of all frequencies the edge histogram is equal to or greater than a predetermined threshold value and (ii) performs a smoothing process on the decoded image with a smoothing intensity adjusted in accordance with whether or not the ratio is equal to or greater than the predetermined threshold value.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: February 9, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Mihoko Watanabe, Akira Koike, Yoshinori Kohno, Shigeki Taniguchi, Masahiko Takiguchi, Ichiro Mizobuchi