公开(公告)号：US20200286431A1

公开(公告)日：2020-09-10

申请号：US16810497

申请日：2020-03-05

Applicant: SYNAPTICS INCORPORATED

Inventor： Akio SUGIYAMA ,  Takashi NOSE ,  Hirobumi FURIHATA ,  Masao ORIO ,  Susumu SAITO

IPC: G09G3/3258 ,  G09G3/20

Abstract: 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.

公开(公告)号：US20200118504A1

公开(公告)日：2020-04-16

申请号：US16582800

申请日：2019-09-25

Applicant: SYNAPTICS INCORPORATED

Inventor： Tomoo MINAKI ,  Hirobumi FURIHATA ,  Takashi NOSE

IPC: G09G3/36 ,  G09G3/3258

Abstract: A display driver comprises image processing circuitry and drive circuitry. The image processing circuitry is configured to output display image data representing a display image comprising an effective area to be displayed in a display area of a display panel and an invalid area not to be displayed in the display area. The drive circuitry drives the display panel based on the display image data comprising effective pixel data associated with first pixels included in the effective area and invalid pixel data associated with second pixels included in the invalid area. Effective pixel data associated with first pixels located within a boundary area adjacent to the invalid area is set to first grayscale values. The invalid pixel data associated with second pixels located within an insert area defined in the invalid area is set to second grayscale values comprising a value different from the first grayscale values.

公开(公告)号：US20200005693A1

公开(公告)日：2020-01-02

申请号：US16451695

申请日：2019-06-25

Applicant: SYNAPTICS INCORPORATED

Inventor： Hirobumi FURIHATA ,  Kazutoshi AOGAKI ,  Tomoo MINAKI

IPC: G09G3/00 ,  G09G3/3225

Abstract: A system and method for generate mura correction data comprises obtaining brightness values of a pixel-existing area and a pixel-absent area of a display panel. Further, updated brightness values are generated by replacing the brightness value of the pixel-absent area with a suitable value. Mura correction data is generated using the updated brightness values. A display driver is configured with the mura correction data for updating a display device.

公开(公告)号：US20180240440A1

公开(公告)日：2018-08-23

申请号：US15594327

申请日：2017-05-12

Applicant: SYNAPTICS INCORPORATED

Inventor： Hirobumi FURIHATA ,  Damien BERGET ,  Takashi NOSE ,  Joseph Kurth REYNOLDS

IPC: G09G5/395

CPC classification number: G09G5/395 ,  G09G3/2011 ,  G09G3/3258 ,  G09G3/3291 ,  G09G2300/0439 ,  G09G2310/027 ,  G09G2320/0271 ,  G09G2320/0285 ,  G09G2320/0626 ,  G09G2330/028 ,  G09G2340/02 ,  G09G2350/00

Abstract: A host device divides original data into first to Nth stream data for N being an integer of two or more, generates first to Nth compressed stream data by sequentially compressing the first to Nth stream data with a variable length compression, divides the first to Nth compressed stream data into fixed-length blocks, and sequentially transmits the fixed-length blocks to the display driver. The display driver includes a memory storing therein the fixed-length blocks and a decompression circuitry reading out the fixed-length blocks from the memory. The decompression circuitry includes first to Nth processing circuits. The first to Nth processing circuits each perform a predetermined process on the fixed-length blocks received to generate processed data. The host device sorts the fixed-length blocks so that the fixed-length blocks are supplied in the order in which the first to Nth processing circuits require the fixed-length blocks.

公开(公告)号：US20210304649A1

公开(公告)日：2021-09-30

申请号：US16828819

申请日：2020-03-24

Applicant: SYNAPTICS INCORPORATED

Inventor： Masao ORIO ,  Joseph Kurth REYNOLDS ,  Xi CHU ,  Takashi NOSE ,  Hirobumi FURIHATA

IPC: G09G3/00 ,  G09G3/3208

Abstract: A method comprises acquiring measured luminance levels at a measurement point of a display area for a plurality of test images displayed in the display area, and estimating one or more luminance levels at one or more corresponding luminance estimation points of the display area using the measured luminance levels. The method further comprises determining, based on the one or more estimated luminance levels, a correction parameter using the estimated one or more luminance levels.

公开(公告)号：US20210012749A1

公开(公告)日：2021-01-14

申请号：US17027229

申请日：2020-09-21

Applicant: SYNAPTICS INCORPORATED

Inventor： Hirobumi FURIHATA ,  Kazutoshi AOGAKI ,  Tomoo MINAKI ,  Akio SUGIYAMA ,  Takashi NOSE

IPC: G09G5/10 ,  G09G3/3208 ,  G09G3/36

Abstract: 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.

公开(公告)号：US20190156763A1

公开(公告)日：2019-05-23

申请号：US16193959

申请日：2018-11-16

Applicant: SYNAPTICS INCORPORATED

Inventor： Hirobumi FURIHATA ,  Susumu SAITO ,  Takashi NOSE

IPC: G09G3/3275 ,  G09G3/3233

Abstract: A display driver comprises correction circuitry configured to correct a first image data for a first line, based on a difference between a first current and a second current. The first current is for displaying the first line and the second current is for displaying a second line after the first line is displayed.

公开(公告)号：US20190122613A1

公开(公告)日：2019-04-25

申请号：US16223508

申请日：2018-12-18

Applicant: SYNAPTICS INCORPORATED

Inventor： Hirobumi FURIHATA ,  Damien BERGET ,  Takashi NOSE ,  Joseph Kurth REYNOLDS

IPC: G09G3/3258 ,  G09G3/20 ,  G09G3/3291 ,  G09G5/395

Abstract: A host device divides original data into first to Nth stream data for N being an integer of two or more, generates first to Nth compressed stream data by sequentially compressing the first to Nth stream data with a variable length compression, divides the first to Nth compressed stream data into fixed-length blocks, and sequentially transmits the fixed-length blocks to the display driver. The display driver includes a memory storing therein the fixed-length blocks and a decompression circuitry reading out the fixed-length blocks from the memory. The decompression circuitry includes first to Nth processing circuits. The first to Nth processing circuits each perform a predetermined process on the fixed-length blocks received to generate processed data. The host device sorts the fixed-length blocks so that the fixed-length blocks are supplied in the order in which the first to Nth processing circuits require the fixed-length blocks.

公开(公告)号：US20200286429A1

公开(公告)日：2020-09-10

申请号：US16805424

申请日：2020-02-28

Applicant: SYNAPTICS INCORPORATED

Inventor： Masao ORIO ,  Hirobumi FURIHATA ,  Takashi NOSE ,  Ken SATO ,  Nobuhiro NAGATO

IPC: G09G3/3241

Abstract: A display driver comprises drive circuitry and emission control circuitry. The display driver is configured to drive a display panel. The display panel may be a self-luminous display panel. The emission control circuitry is configured to generate a control signal to control the display panel during a first frame period to successively move a plurality of non-light-emitting areas successively inserted at an end of a display area of the display panel in a predetermined direction, the plurality of non-light-emitting areas having gradually changing widths in the predetermined direction.

公开(公告)号：US20190156786A1

公开(公告)日：2019-05-23

申请号：US16193985

申请日：2018-11-16

Applicant: SYNAPTICS INCORPORATED

Inventor： Kazutoshi AOGAKI ,  Hirobumi FURIHATA ,  Hirohisa TSUCHIDA ,  Takashi NOSE

IPC: G09G5/10 ,  G09G3/20

Abstract: A device and method for correcting mura within a display device. The device may include a display driver that includes lookup table circuitry, correction amount calculation circuitry, and mura correction circuitry. The lookup table circuitry is configured to calculate a second grayscale value for a second display brightness value (DBV), the second grayscale value being determined to achieve a brightness level corresponding to a first grayscale value and a first DBV. The correction amount calculation circuitry is configured to calculate a mura correction amount based on a mura correction data for the second grayscale value and the second DBV. Further, the mura correction circuitry is configured to perform a mura correction on input image data by using the mura correction amount.