公开(公告)号：US11798457B2

公开(公告)日：2023-10-24

申请号：US17612029

申请日：2019-05-23

Applicant: LG ELECTRONICS INC.

Inventor： Yeonoh Nam ,  Seokpan Kang ,  Sangchurl Nam ,  Myongyoung Lee ,  Chungbin Im

IPC: G09G3/20

CPC classification number: G09G3/2092 ,  G09G2320/0613 ,  G09G2340/0407 ,  G09G2354/00

Abstract: The present invention relates to a display device which changes the quality of displayed images in real time according to the genres of the images, the display device comprising: a storage unit which stores picture quality according to the genres of images; a display unit which displays an image corresponding to an input image signal; and a control unit which acquires the genre of an image and changes the quality of the image to the picture quality corresponding to the genre.

公开(公告)号：US11455708B2

公开(公告)日：2022-09-27

申请号：US17195632

申请日：2021-03-08

Applicant: LG ELECTRONICS INC.

Inventor： Hyomin Kim ,  Yeonoh Nam

IPC: G09G5/10 ,  G06T5/00 ,  G06T5/40 ,  H04N1/60 ,  H04N9/67 ,  H04N9/69

Abstract: A tone mapping apparatus includes a dynamic tone mapping module configured to generate a first tone mapping curve based on a luminance distribution histogram of input image data and generate first image data from the input image data using the first tone mapping curve, and a processor configured to generate an RGB distribution histogram, a detail region histogram and a high-luminance region histogram based on pixel information of the first image data, generate a second tone mapping curve using the RGB distribution histogram, the detail region histogram and the high-luminance region histogram and generate output image data from the first image data using the second tone mapping curve.

公开(公告)号：US11735089B2

公开(公告)日：2023-08-22

申请号：US17304416

申请日：2021-06-21

Applicant: LG ELECTRONICS INC.

Inventor： Yeonoh Nam ,  Jongmin Park

IPC: G09G3/20

CPC classification number: G09G3/2003 ,  G09G2320/02

Abstract: A display device according to an embodiment of the present application comprises a storage configured to store gamut mapping data, a controller configured to, when an image signal is input, convert the input image signal into an output signal based on the gamut mapping data, and a display configured to display an image based on the output signal, wherein the controller changes the gamut mapping data according to the input image signal.

公开(公告)号：US10469789B2

公开(公告)日：2019-11-05

申请号：US15527695

申请日：2015-03-20

Applicant: LG ELECTRONICS INC. ,  INHA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Inventor： Hunbae Woo ,  Cheoljoo Lee ,  Byungcheol Song ,  Yeonoh Nam ,  Dongyoon Choi

IPC: H04N5/52 ,  H04N5/57 ,  H04N5/63 ,  H03G3/20 ,  H04N5/44 ,  H04N21/443 ,  H04N21/4402

Abstract: A digital device and a control method thereof are disclosed in the present specification. The digital device and the control method thereof according to the present invention may comprise the steps of receiving an image signal; separating the received image signal by a plurality of frequency bands; adjusting a gain for the image signal of each of the separated frequency bands; displaying an enhanced image on a screen by synthesizing the image signals of the respective frequency bands in which the gain has been adjusted; separating the screen, on which the enhanced image is displayed, into a plurality of areas; checking whether the maximum pixel value of the enhanced image displayed on the separated screen area, if the maximum pixel value of the enhanced image is larger than the reference value.

公开(公告)号：US12033385B2

公开(公告)日：2024-07-09

申请号：US17904476

申请日：2020-02-27

Applicant: LG ELECTRONICS INC.

Inventor： Yeonoh Nam ,  Myongyoung Lee ,  Sangchurl Nam ,  Jongmin Park ,  Chungbin Im ,  Seokpan Kang

IPC: G06V20/40 ,  H04N21/485

CPC classification number: G06V20/41 ,  H04N21/4854 ,  H04N21/4852

Abstract: The present disclosure relates to a display device which displays an image with optimal picture quality according to genre. The display device may comprise: a control unit which determines the genre of an image; and a display unit which displays the image, the picture quality of which is adjusted according to the genre determined by the control unit, wherein the control unit may analyze an input image and classify the genre thereof, and revise the classified genre on the basis of a current scene.

公开(公告)号：US12027140B2

公开(公告)日：2024-07-02

申请号：US17931467

申请日：2022-09-12

Applicant: LG ELECTRONICS INC.

Inventor： Yeonoh Nam ,  Sangchurl Nam ,  Chungbin Im

IPC: G09G5/10

CPC classification number: G09G5/10 ,  G09G2320/0242 ,  G09G2320/0626 ,  G09G2320/066

Abstract: Provided is a display device including a communication device for receiving an input image containing a first frame and a second frame, an image quality controller for performing a first image quality control on at least a portion of the first frame, and a gain generator for calculating a gain of the second frame based on the first frame where the first image quality control has been performed, wherein the image quality controller performs a second image quality control applied with the gain for at least a portion of the second frame.

公开(公告)号：US11417293B2

公开(公告)日：2022-08-16

申请号：US16978881

申请日：2018-03-13

Applicant: LG ELECTRONICS INC.

Inventor： Kyeongryeol Park ,  Yeonoh Nam

IPC: G09G5/06 ,  G06T11/00 ,  H04N1/60 ,  H04N9/64

Abstract: A display device according to an embodiment of the disclosure comprises: a linear gamut mapping unit for deriving a linear gamut mapping result for matching a gamut of an input image signal to a target display gamut; a non-linear gamut mapping unit for deriving a non-linear gamut mapping result for matching the gamut of the input image signal to the target display gamut; and a mixing unit for generating an output image signal by mixing the linear gamut mapping result and the non-linear gamut mapping result. The disclosure may provide an optimal gamut mapping result that is intended by a user and an originator.

公开(公告)号：US11004408B2

公开(公告)日：2021-05-11

申请号：US16714510

申请日：2019-12-13

Applicant: LG ELECTRONICS INC.

Inventor： Myongyoung Lee ,  Jongmin Lee ,  Taeha Um ,  Yeonoh Nam

IPC: G09G3/34 ,  G02F1/1335 ,  G02F1/13357

Abstract: The present invention relates to a liquid crystal display device that provides improved local dimming. The liquid crystal display device includes: a liquid crystal display panel; a backlight unit divided and driven into a plurality of blocks and supplying light to the liquid crystal display panel; a local dimming value calculator calculating a dimming value of each of the blocks in accordance with input image data; and a backlight dimming controller having a pixel corrector correcting image data on the basis of the dimming values, in which the backlight dimming controller can correct at least some of the dimming values of the blocks calculated by the local dimming value calculator.

公开(公告)号：US11984087B2

公开(公告)日：2024-05-14

申请号：US16918846

申请日：2020-07-01

Applicant: LG ELECTRONICS INC.

Inventor： Yeonoh Nam ,  Kyuyong Chung ,  Jongmin Lee

IPC: G09G3/34

CPC classification number: G09G3/3426 ,  G09G2320/064

Abstract: Provided are a display device and an operating method thereof. The display device includes a liquid crystal display panel, a backlight unit including a plurality of light sources for supplying light to the liquid crystal display panel and driven in a state of being divided into a plurality of blocks corresponding to the number of the light sources, and a backlight dimming controller configured to calculate dimming values of the plurality of blocks. The backlight dimming controller is configured to divide each of the plurality of blocks into a plurality of unit blocks and control brightness of an output image differently for each of the unit blocks.

公开(公告)号：US11849250B2

公开(公告)日：2023-12-19

申请号：US17938107

申请日：2022-10-05

Applicant: LG ELECTRONICS INC.

Inventor： Saem Park ,  Seokpan Kang ,  Yongtaek Gong ,  Sangchurl Nam ,  Yeonoh Nam ,  Jeonghyu Yang ,  Kyungmee Lee ,  Myongyoung Lee ,  Seoksoo Lee ,  Wonwoo Lee ,  Seungjong Choi ,  Jongwoo Ha

IPC: H04N7/01 ,  G06N3/08 ,  G06T7/00 ,  H04N21/647

CPC classification number: H04N7/0132 ,  G06N3/08 ,  G06T7/0002 ,  H04N7/0117 ,  H04N21/647 ,  G06T2207/10016 ,  G06T2207/30168

Abstract: Disclosed are a signal processing device and an image display apparatus including the same. The signal processing device of an embodiment of the present disclosure includes: a quality calculator configured to calculate a source quality of an image signal received from an external settop box or a network; an image quality setter configured to set an image quality of the image signal based on the calculated source quality; and an image quality processor configured to perform image quality processing on the image signal based on the set image quality, wherein in response to the source quality of the received image signal being changed at a first time point, the image quality setter changes an image quality setting sequentially from a first setting to a second setting; and based on the image quality setting, the image quality processor performs image quality processing. Accordingly, flicker may be reduced when an image quality is changed due to a change in the source quality of the received image signal.