Patents by Inventor Yasuo Saruhashi
Yasuo Saruhashi 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: 11127361Abstract: According to one embodiment, a display device includes a display panel on which first pixels and second pixels are alternately arranged in the columnar direction, and a display controller configured to input a first image signal and to display an image. The first pixels and the second pixels are arranged such that first sub-pixels are adjacent to third sub-pixels in the columnar direction. The display controller is configured to execute conversion of converting the input first image signal into a second image signal, vary the luminance values of the third sub-pixels in the second image signal based on the luminance values of the third sub-pixels in the first image signal which become unable to be represented in the display panel.Type: GrantFiled: July 3, 2019Date of Patent: September 21, 2021Assignee: Japan Display Inc.Inventors: Yasuo Saruhashi, Kazunari Tomizawa
-
Patent number: 10699652Abstract: A signal processing device includes an elongation coefficient calculation circuit receiving a first image signal including a red pixel value, a green pixel value and a blue pixel value, and determining an elongation coefficient value with respect to one frame based on the first image signal, and an image signal processing circuit receiving the first image signal and the elongation coefficient value. The image signal processing circuit includes an image signal conversion circuit converting the first image signal into a second image signal including a red pixel value, a green pixel value, a blue pixel value and a white pixel value, an elongation processing circuit elongating the second image signal based on the elongation coefficient value, an image signal analysis circuit analyzing the elongated second image signal, and an adjustment circuit adjusting the elongated second image signal.Type: GrantFiled: June 19, 2018Date of Patent: June 30, 2020Assignee: Japan Display Inc.Inventors: Kazunari Tomizawa, Kazuhiko Sako, Yasuo Saruhashi
-
Publication number: 20200013353Abstract: According to one embodiment, a display device includes a display panel on which first pixels and second pixels are alternately arranged in the columnar direction, and a display controller configured to input a first image signal and to display an image. The first pixels and the second pixels are arranged such that first sub-pixels are adjacent to third sub-pixels in the columnar direction. The display controller is configured to execute conversion of converting the input first image signal into a second image signal, vary the luminance values of the third sub-pixels in the second image signal based on the luminance values of the third sub-pixels in the first image signal which become unable to be represented in the display panel.Type: ApplicationFiled: July 3, 2019Publication date: January 9, 2020Applicant: Japan Display Inc.Inventors: Yasuo SARUHASHI, Kazunari TOMIZAWA
-
Patent number: 10389916Abstract: An image processing device including an area dividing circuit configured to divide an image into a plurality of blocks, convert input data showing the image to data including color information, allocate data including the color information into each of the blocks, and output data of the block and image data allocated to each of the blocks, a focus area judgment circuit configured to divide data of the block into a first image area and a second image area, and output the divided area data, and an area dedicated color conversion RGB value calculation circuit configured to compare the image data and the area data, in the case where the image data is included in the first image area, calculate first color conversion data from an intensity coefficient, wherein the image data includes a first value, a second value and a third value.Type: GrantFiled: October 19, 2017Date of Patent: August 20, 2019Assignee: Japan Display Inc.Inventor: Yasuo Saruhashi
-
Publication number: 20180374437Abstract: A signal processing device includes an elongation coefficient calculation circuit receiving a first image signal including a red pixel value, a green pixel value and a blue pixel value, and determining an elongation coefficient value with respect to one frame based on the first image signal, and an image signal processing circuit receiving the first image signal and the elongation coefficient value. The image signal processing circuit includes an image signal conversion circuit converting the first image signal into a second image signal including a red pixel value, a green pixel value, a blue pixel value and a white pixel value, an elongation processing circuit elongating the second image signal based on the elongation coefficient value, an image signal analysis circuit analyzing the elongated second image signal, and an adjustment circuit adjusting the elongated second image signal.Type: ApplicationFiled: June 19, 2018Publication date: December 27, 2018Applicant: Japan Display Inc.Inventors: Kazunari Tomizawa, Kazuhiko Sako, Yasuo Saruhashi
-
Patent number: 10026380Abstract: A display device include a division circuit dividing an input image from a plurality of pixels into a plurality of regions based on the feature quantity of each of the plurality of pixels, a luminance reduction rate calculation circuit calculating the reduction rate of luminance of each region based on the surface area of each of the plurality of regions, an image generation circuit generating output images by correcting the luminance of each of the plurality of pixels based on the reduction rate calculated by the luminance reduction rate calculation circuit, and a correction circuit correcting labels assigned to each of the plurality of pixels by the division circuit. The division circuit is configured to divide the input image by assigning different labels to each region of the plurality of pixels.Type: GrantFiled: April 19, 2017Date of Patent: July 17, 2018Assignee: Japan Display Inc.Inventor: Yasuo Saruhashi
-
Publication number: 20180152602Abstract: An image processing device including an area dividing circuit configured to divide an image into a plurality of blocks, convert input data showing the image to data including color information, allocate data including the color information into each of the blocks, and output data of the block and image data allocated to each of the blocks, a focus area judgment circuit configured to divide data of the block into a first image area and a second image area, and output the divided area data, and an area dedicated color conversion RGB value calculation circuit configured to compare the image data and the area data, in the case where the image data is included in the first image area, calculate first color conversion data from an intensity coefficient, wherein the image data includes a first value, a second value and a third value.Type: ApplicationFiled: October 19, 2017Publication date: May 31, 2018Applicant: Japan Display Inc.Inventor: Yasuo SARUHASHI
-
Patent number: 9870729Abstract: A control device calculates output signal values to the respective pixels for each row based on pixel signal values. The control device includes a line integrating unit that calculates a line integrated value by totaling the pixel signal values for the respective pixels within a line pixel group, a frame integrating unit that calculates a frame integrated value by totaling the output signal values for the respective pixels of a former arranged pixel group for which the output signal values have already been calculated in the same display frame, a power consumption adjustment term determining unit that calculates a power consumption adjustment term based on a frame threshold that is a predetermined threshold for power consumption, a line integrated value, and a frame integrated value, and an output signal generating unit that calculates output signal values based on a pixel signal value and the power consumption adjustment term.Type: GrantFiled: September 27, 2016Date of Patent: January 16, 2018Assignee: Japan Display Inc.Inventor: Yasuo Saruhashi
-
Publication number: 20170309251Abstract: An edge detection and labeling circuit dividing an input image from a plurality of pixels into a plurality of regions based on the feature quantity of each of the plurality of pixels, a region-specific luminance reduction rate calculation circuit calculating the reduction rate of luminance for each region based on the surface area of each of the plurality of regions, and a pixel light emission quantity calculation circuit generating an output image by correcting the luminance of each of the plurality of pixels based on the reduction rate output by the region-specific luminance reduction rate calculation circuit are provided.Type: ApplicationFiled: April 19, 2017Publication date: October 26, 2017Inventor: Yasuo SARUHASHI
-
Publication number: 20170103693Abstract: A control device calculates output signal values to the respective pixels for each row based on pixel signal values. The control device includes a line integrating unit that calculates a line integrated value by totaling the pixel signal values for the respective pixels within a line pixel group, a frame integrating unit that calculates a frame integrated value by totaling the output signal values for the respective pixels of a former arranged pixel group for which the output signal values have already been calculated in the same display frame, a power consumption adjustment term determining unit that calculates a power consumption adjustment term based on a frame threshold that is a predetermined threshold for power consumption, a line integrated value, and a frame integrated value, and an output signal generating unit that calculates output signal values based on a pixel signal value and the power consumption adjustment term.Type: ApplicationFiled: September 27, 2016Publication date: April 13, 2017Inventor: Yasuo Saruhashi
-
Patent number: 9176616Abstract: In one embodiment, a display device having a touch function includes an insulating substrate and a plurality of pixels formed on the insulating substrate and arranged in a matrix of rows and columns. The pixels form a plurality of pixel blocks formed of a plurality of rows and columns of the pixels. A sensor circuit is arranged in a space between adjacent pixels on the insulating substrate and includes a coupling electrode, a detection electrode arranged adjacent to the coupling electrode for forming a coupling capacitance therebetween, and a reading-out circuit to read out a potential of the detection electrode. At least one sensor circuit is arranged in each pixel block. The contact or non-contact by a fingertip or a nib is detected by a potential difference of the detection electrode.Type: GrantFiled: August 10, 2011Date of Patent: November 3, 2015Assignee: JAPAN DISPLAY, INC.Inventors: Takashi Nakamura, Satoru Tomita, Masayoshi Fuchi, Hirotaka Hayashi, Takayuki Imai, Takashi Okada, Takahiko Endo, Miyuki Ishikawa, Masahiro Tada, Yasuo Saruhashi, Keiichi Saito, Hideyuki Takahashi
-
Patent number: 8872793Abstract: According to one embodiment, a sensor module includes a first sensor circuit, a second sensor circuit and a differential circuit. The first sensor circuit includes a first detection electrode, a first amplifier formed of a thin-film transistor and a first coupling capacitor. The second sensor circuit includes a second detection electrode, a second amplifier formed of a thin-film transistor and a second coupling capacitor. The differential circuit is connected to the drain electrode of the first amplifier and the drain electrode of the second amplifier.Type: GrantFiled: June 18, 2012Date of Patent: October 28, 2014Assignee: Japan Display Inc.Inventors: Masahiro Tada, Takashi Nakamura, Hirotaka Hayashi, Masayoshi Fuchi, Takahiko Endo, Miyuki Ishikawa, Takashi Okada, Takayuki Imai, Satoru Tomita, Yasuo Saruhashi
-
Publication number: 20130187877Abstract: According to one embodiment, a display device includes a plurality of pixel circuits which are arranged in a matrix, a plurality of sensor circuits which are arranged in regions between the pixel circuits and which read the magnitude of capacitance coupling, a plurality of scanning lines for the pixel circuits and sensor circuits, a plurality of signal lines for the pixel circuits and sensor circuits a part of which are shared, a controller which controls alternating-current driving that inverts, with a specific period, the polarity of a display signal written into the pixel circuits, and a determination module which determines a magnitude correlation between a sensor signal read from the sensor circuit and a polarity-based threshold value corresponding to the polarity of alternating-current driving in reading the sensor signal.Type: ApplicationFiled: December 21, 2012Publication date: July 25, 2013Inventors: Masahiro TADA, Takashi Nakamura, Hirotaka Hayashi, Masayoshi Fuchi, Yasuo Saruhashi
-
Publication number: 20130002603Abstract: According to one embodiment, a sensor module includes a first sensor circuit, a second sensor circuit and a differential circuit. The first sensor circuit includes a first detection electrode, a first amplifier formed of a thin-film transistor and a first coupling capacitor. The second sensor circuit includes a second detection electrode, a second amplifier formed of a thin-film transistor and a second coupling capacitor. The differential circuit is connected to the drain electrode of the first amplifier and the drain electrode of the second amplifier.Type: ApplicationFiled: June 18, 2012Publication date: January 3, 2013Inventors: Masahiro Tada, Takashi Nakamura, Hirotaka Hayashi, Masayoshi Fuchi, Takahiko Endo, Miyuki Ishikawa, Takashi Okada, Takayuki Imai, Satoru Tomita, Yasuo Saruhashi
-
Publication number: 20120044176Abstract: In one embodiment, a display device having a touch function includes an insulating substrate and a plurality of pixels formed on the insulating substrate and arranged in a matrix of rows and columns. The pixels form a plurality of pixel blocks formed of a plurality of rows and columns of the pixels. A sensor circuit is arranged in a space between adjacent pixels on the insulating substrate and includes a coupling electrode, a detection electrode arranged adjacent to the coupling electrode for forming a coupling capacitance therebetween, and a reading-out circuit to read out a potential of the detection electrode. At least one sensor circuit is arranged in each pixel block. The contact or non-contact by a fingertip or a nib is detected by a potential difference of the detection electrode.Type: ApplicationFiled: August 10, 2011Publication date: February 23, 2012Applicant: Toshiba Mobile Display Co., Ltd.Inventors: Takashi Nakamura, Satoru Tomita, Masayoshi Fuchi, Hirotaka Hayashi, Takayuki Imai, Takashi Okada, Takahiko Endo, Miyuki Ishikawa, Masahiro Tada, Yasuo Saruhashi, Keiichi Saito, Hideyuki Takahashi