Patents by Inventor Takashi Nose
Takashi Nose 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).
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Patent number: 11551614Abstract: A system and method for encoding, transmitting and updating a display based on demura calibration information for a display device comprises generating demura correction coefficients based on display color information, separating coherent components from the demura correction coefficients to generate residual information, and encode the residual information using a first encoding technique. Further, the image data may be divided into data streams, compressed and transmitted to from a host device to a display driver of a display device. The display driver decompresses and drives subpixels of the pixels in based on the decompressed data. The display driver updates the subpixels of a display using corrected greyscale values for each subpixel are determined from the decompressed data.Type: GrantFiled: February 23, 2018Date of Patent: January 10, 2023Assignee: Synaptics IncorporatedInventors: Damien Berget, Hirobumi Furihata, Joseph Kurth Reynolds, Takashi Nose
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Publication number: 20220392385Abstract: A display driver comprises control circuitry configured to store a default gamma curve, determine a count of in-region pixels of a target pixel in a display panel and neighboring pixels of the target pixel, the in-region pixels being located in a predetermined region of the display panel, and determine a scale factor based on a ratio of the count of the in-region pixels to a total number of the target pixel and the neighboring pixels. The control circuitry also determines a modified gamma curve by scaling the default gamma curve with the scale factor.Type: ApplicationFiled: August 11, 2022Publication date: December 8, 2022Applicant: Synaptics IncorporatedInventors: Hirobumi Furihata, Tomoo Minaki, Masao Orio, Takashi Nose
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Publication number: 20220383797Abstract: A display driver that drives a display panel comprises storage circuitry, color addition processing circuitry, and drive circuitry. The storage circuitry stores F subpixel data acquired from color coordinate data indicating color coordinates of a displayed color in a predetermined color space displayed on the display panel when an R subpixel, a G subpixel, and a B subpixel in each of a plurality of pixels of the display panel are driven with drive signals corresponding to a minimum grayscale value and an F subpixel in each of the plurality of pixels which displays an additional color other than a primary color R, a primary color G, and a primary color B is driven with a drive signal corresponding to a maximum grayscale value. The color addition processing circuitry generates output FRGB data from input RGB data, in response to the F subpixel data stored in the storage circuitry.Type: ApplicationFiled: August 3, 2022Publication date: December 1, 2022Applicant: Synaptics IncorporatedInventors: Masao ORIO, Hirobumi FURIHATA, Kazutoshi AOGAKI, Takashi NOSE
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Patent number: 11508273Abstract: A display driver includes image processing circuitry, driver circuitry, and test circuitry. The image processing circuitry is configured to generate first output data during a first display update period and generate second output data during a second display update period. The driver circuitry is configured to update a display panel based on the first output data during the first display update period and update the display panel based on the second output data during the second display update period. The test circuitry is configured to test the image processing circuitry during a test period disposed between the first display update period and the second display update period.Type: GrantFiled: November 12, 2020Date of Patent: November 22, 2022Assignee: Synaptics IncorporatedInventors: Masao Orio, Takashi Nose, Hirobumi Furihata, Akio Sugiyama, Kota Kitamura, Chirinjeev Singh, Dipankar Talukdar, Guozhong Shen
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Patent number: 11488499Abstract: A method and apparatus for sensing strain in a flexible electronic display. In some implementations, a display controller may be coupled to an electronic display panel. The display controller is configured to receive sensor signals from one or more piezoresistive sensors disposed in the electronic display panel, determine an amount of strain in the electronic display panel based on the received sensor signals, determine a bend angle of the electronic display panel based on the determined amount of strain, and update a configuration of the electronic display panel based at least in part on the determined bend angle. In some implementations, the electronic display panel may be an organic light-emitting diode (OLED) display panel. In some implementations, the electronic display panel may include a polycrystalline silicon (poly-Si) backplane disposed on a flexible substrate, where each of the piezoresistive sensors includes one or more strain gauges formed on the poly-Si backplane.Type: GrantFiled: October 30, 2020Date of Patent: November 1, 2022Assignee: SYNAPTICS INCORPORATEDInventors: Petr Shepelev, Takayuki Noto, Takashi Nose
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Patent number: 11482175Abstract: A display driver comprises gamma processing circuitry, compensation circuitry, and driver circuitry. The gamma processing circuitry is configured to process the image data to generate gamma processed image data. The compensation circuitry is configured to process the gamma-processed image data, based on a ratio of a number of display elements that emit light to a total number of display elements of a display panel, to generate compensated image data. The driver circuitry is configured to drive the display panel based on the compensated image data.Type: GrantFiled: August 27, 2021Date of Patent: October 25, 2022Assignee: Synaptics IncorporatedInventors: Akio Sugiyama, Takashi Nose, Hirobumi Furihata, Masao Orio, Susumu Saito
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Publication number: 20220329838Abstract: Image compression circuitry comprises first-stage compression circuitry, first-stage selector circuitry, second-stage compression circuitry, and second-stage selector circuitry. The first-stage compression circuitry is configured to sequentially receive a plurality of input blocks each comprising pixel data of a plurality of pixels, generate a plurality of first-stage compressed blocks by compressing the plurality of input blocks, and generate a plurality of first-stage decompressed blocks. The first-stage selector circuitry is configured to select first-stage-selected decompressed blocks from among the plurality of first-stage decompressed blocks and select first-stage-selected compressed blocks corresponding to the first-stage-selected decompressed blocks from among the plurality of first-stage compressed blocks.Type: ApplicationFiled: June 28, 2022Publication date: October 13, 2022Applicant: Synaptics IncorporatedInventors: Micael Lacson Magpayo, Hirobumi Furihata, Takashi Nose
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Patent number: 11462164Abstract: A display system includes a display panel and first and second display drivers. The first display driver is configured to generate first region total current data corresponding to a subtotal of estimated pixel currents of respective pixels in a first region of the display panel. The second display driver is configured to generate second region total current data corresponding to a subtotal of estimated pixel currents of respective pixels in a second region of the display panel. The first display driver is further configured to receive the second region total current data from the second display driver, receive first image data for the first region; generate first voltage data based on the first image data, and update the first region of the display panel based on the first voltage data. Generating the first voltage data includes an IR-drop compensation based on the first and second region total current data.Type: GrantFiled: August 16, 2021Date of Patent: October 4, 2022Assignee: Synaptics IncorporatedInventors: Masao Orio, Hirobumi Furihata, Takashi Nose
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Patent number: 11443671Abstract: A display driver includes control circuitry and image processing circuitry. The control circuitry is configured to store a default gamma curve and determine a scaling factor based on a location of a target pixel in a display panel. The control circuitry is further configured to determine a modified gamma curve by scaling the default gamma curve with the scaling factor. The image processing circuitry configured to apply a gamma transformation based on the modified gamma curve to image data defined for the target pixel to generate output voltage data for the target pixel.Type: GrantFiled: January 13, 2021Date of Patent: September 13, 2022Assignee: Synaptics IncorporatedInventors: Hirobumi Furihata, Tomoo Minaki, Masao Orio, Takashi Nose
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Patent number: 11436962Abstract: A display driver includes control circuitry and image processing circuitry. The control circuitry is configured to store first and second predetermined gamma curve defined for first and second regions of a display panel, respectively, the first region having a different pixel layout than the second region. The control circuitry is further configured to determine first and second modified gamma curves by scaling the first and second predetermined gamma curves with a common scale factor. The image processing circuitry is configured to apply a first gamma transformation based on the first modified gamma curve to a first graylevel defined for a first pixel circuit located in the first region to determine a first output voltage level and apply a second gamma transformation based on the second modified gamma curve to a second graylevel defined for a second pixel circuit located in the second region to determine a second output voltage level.Type: GrantFiled: January 13, 2021Date of Patent: September 6, 2022Assignee: Synaptics IncorporatedInventors: Hirobumi Furihata, Masao Orio, Takashi Nose, Akio Sugiyama
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Patent number: 11436968Abstract: A display driver that drives a display panel comprises storage circuitry, color addition processing circuitry, and drive circuitry. The storage circuitry stores F subpixel data acquired from color coordinate data indicating color coordinates of a displayed color in a predetermined color space displayed on the display panel when an R subpixel, a G subpixel, and a B subpixel in each of a plurality of pixels of the display panel are driven with drive signals corresponding to a minimum grayscale value and an F subpixel in each of the plurality of pixels which displays an additional color other than a primary color R, a primary color G, and a primary color B is driven with a drive signal corresponding to a maximum grayscale value. The color addition processing circuitry generates output FRGB data from input RGB data, in response to the F subpixel data stored in the storage circuitry.Type: GrantFiled: March 15, 2018Date of Patent: September 6, 2022Assignee: Synaptics IncorporatedInventors: Masao Orio, Hirobumi Furihata, Kazutoshi Aogaki, Takashi Nose
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Patent number: 11423819Abstract: A display driver includes image processing circuitry and drive circuitry. The image processing circuitry is configured to receive first subpixel data for a first scan line of a display panel. The display panel includes a first region with a first pixel layout and a second region with a second pixel layout different from the first pixel layout. The image processing circuitry is further configured to determine an overshoot amount based, at least in part, on the first subpixel data and region indication data and generate resulting voltage data using the overshoot amount. The region indication data indicates whether the resulting voltage data is for the first region or for the second region. The drive circuitry is configured to drive the display panel based, at least in part, on the resulting voltage data.Type: GrantFiled: October 7, 2021Date of Patent: August 23, 2022Assignee: Synaptics IncorporatedInventors: Hirobumi Furihata, Takashi Nose, Masao Orio
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Patent number: 11418801Abstract: Image compression circuitry comprises first-stage compression circuitry, first-stage selector circuitry, second-stage compression circuitry, and second-stage selector circuitry. The first-stage compression circuitry is configured to sequentially receive a plurality of input blocks each comprising pixel data of a plurality of pixels, generate a plurality of first-stage compressed blocks by compressing the plurality of input blocks, and generate a plurality of first-stage decompressed blocks. The first-stage selector circuitry is configured to select first-stage-selected decompressed blocks from among the plurality of first-stage decompressed blocks and select first-stage-selected compressed blocks corresponding to the first-stage-selected decompressed blocks from among the plurality of first-stage compressed blocks.Type: GrantFiled: October 1, 2019Date of Patent: August 16, 2022Assignee: Synaptics IncorporatedInventors: Micael Lacson Magpayo, Hirobumi Furihata, Takashi Nose
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Publication number: 20220223081Abstract: A display driver includes control circuitry and image processing circuitry. The control circuitry is configured to store first and second predetermined gamma curve defined for first and second regions of a display panel, respectively, the first region having a different pixel layout than the second region. The control circuitry is further configured to determine first and second modified gamma curves by scaling the first and second predetermined gamma curves with a common scale factor. The image processing circuitry is configured to apply a first gamma transformation based on the first modified gamma curve to a first graylevel defined for a first pixel circuit located in the first region to determine a first output voltage level and apply a second gamma transformation based on the second modified gamma curve to a second graylevel defined for a second pixel circuit located in the second region to determine a second output voltage level.Type: ApplicationFiled: January 13, 2021Publication date: July 14, 2022Applicant: Synaptics IncorporatedInventors: Hirobumi Furihata, Masao Orio, Takashi Nose, Akio Sugiyama
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Publication number: 20220223080Abstract: A display driver includes control circuitry and image processing circuitry. The control circuitry is configured to store a default gamma curve and determine a scaling factor based on a location of a target pixel in a display panel. The control circuitry is further configured to determine a modified gamma curve by scaling the default gamma curve with the scaling factor. The image processing circuitry configured to apply a gamma transformation based on the modified gamma curve to image data defined for the target pixel to generate output voltage data for the target pixel.Type: ApplicationFiled: January 13, 2021Publication date: July 14, 2022Applicant: Synaptics IncorporatedInventors: Hirobumi Furihata, Tomoo Minaki, Masao Orio, Takashi Nose
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Publication number: 20220148470Abstract: A display driver includes image processing circuitry, driver circuitry, and test circuitry. The image processing circuitry is configured to generate first output data during a first display update period and generate second output data during a second display update period. The driver circuitry is configured to update a display panel based on the first output data during the first display update period and update the display panel based on the second output data during the second display update period. The test circuitry is configured to test the image processing circuitry during a test period disposed between the first display update period and the second display update period.Type: ApplicationFiled: November 12, 2020Publication date: May 12, 2022Applicant: Synaptics IncorporatedInventors: Masao Orio, Takashi Nose, Hirobumi Furihata, Akio Sugiyama, Kota Kitamura, Chirinjeev Singh, Dipankar Talukdar, Guozhong Shen
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Publication number: 20220139273Abstract: A method and apparatus for sensing strain in a flexible electronic display. In some implementations, a display controller may be coupled to an electronic display panel. The display controller is configured to receive sensor signals from one or more piezoresistive sensors disposed in the electronic display panel, determine an amount of strain in the electronic display panel based on the received sensor signals, determine a bend angle of the electronic display panel based on the determined amount of strain, and update a configuration of the electronic display panel based at least in part on the determined bend angle. In some implementations, the electronic display panel may be an organic light-emitting diode (OLED) display panel. In some implementations, the electronic display panel may include a polycrystalline silicon (poly-Si) backplane disposed on a flexible substrate, where each of the piezoresistive sensors includes one or more strain gauges formed on the poly-Si backplane.Type: ApplicationFiled: October 30, 2020Publication date: May 5, 2022Inventors: Petr SHEPELEV, Takayuki NOTO, Takashi NOSE
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Publication number: 20220114942Abstract: A display driver includes image processing circuitry and driver circuitry. The image processing circuitry is configured to process first image data for pixels of a display panel comprising a first region and a second region to generate output voltage data. The first region and the second region have different pixel layouts. The driver circuitry is configured to update the pixels based on the output voltage data. Processing the first image data comprises IR-drop compensation based on first luminances of the pixels, each of the first luminances being determined based on the first image data and whether a corresponding pixel of the pixels is located in the first region.Type: ApplicationFiled: October 13, 2020Publication date: April 14, 2022Applicant: Synaptics IncorporatedInventors: Masao Orio, Takashi Nose, Hirobumi Furihata, Akio Sugiyama, Tomoo Minaki
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Patent number: 11282480Abstract: A display driver includes gamma curve control circuitry and a converter controller. The gamma curve control circuitry is configured to generate a first gamma curve for a first display brightness value (DBV), and a second gamma curve for a second DBV lower than the first DBV. The converter controller is configured to control a digital-analog converter (DAC) configured to perform digital-analog conversion of an input image data. Further, the converter controller is configured to adjust an analog signal voltage amplitude of the DAC based on a range of an output voltage associated with the second gamma curve.Type: GrantFiled: September 21, 2020Date of Patent: March 22, 2022Assignee: Synaptics IncorporatedInventors: Hirobumi Furihata, Kazutoshi Aogaki, Tomoo Minaki, Akio Sugiyama, Takashi Nose
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Patent number: 11250817Abstract: A display driver is disclosed. The display driver includes: a memory configured to store control points defining a curve associated with a display panel; and shape calculation circuitry configured to: determine, based on the control points, a first intersection point of the curve and a width of a first line associated with the display panel; and modify image data of an image based on the first intersection point.Type: GrantFiled: November 15, 2018Date of Patent: February 15, 2022Assignee: Synaptics IncorporatedInventors: Tomoo Minaki, Hirobumi Furihata, Takashi Nose