公开(公告)号：US20240354915A1

公开(公告)日：2024-10-24

申请号：US18587252

申请日：2024-02-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seungwan KIM ,  Deoksoo Park ,  Byoung-Ju Song ,  Sanghoon Lee

IPC: G06T5/92 ,  G06T5/40 ,  G06T5/50

CPC classification number: G06T5/92 ,  G06T5/40 ,  G06T5/50 ,  G06T2207/20021

Abstract: An image processing device is provided. The device includes: a processor configured to: perform first tone mapping on an input image frame using a brightness enhancement tone curve corresponding to a current ambient illuminance value to obtain a first result; obtain histogram tone curves by applying a variable contrast limit to a plurality of histograms respectively corresponding to a plurality of sub-images, constituting a previous image frame; perform second tone mapping on the input image frame by interpolating the histogram tone curves to obtain a second result; and provide output image data by performing third tone mapping on the input image frame based on the first result and the second result. The brightness enhancement tone curve corresponds to a first human vision system (HVS) response to a reference ambient illuminance value and a second HVS response to a target ambient illuminance value.

公开(公告)号：US10249261B2

公开(公告)日：2019-04-02

申请号：US15402458

申请日：2017-01-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Byoung-Ju Song ,  Deok Soo Park

IPC: G09G5/06 ,  G09G5/10 ,  H04N1/60

Abstract: A display controller includes a lookup table configured to store a plurality of reference data and an interpolation circuit configured to calculate a corrected datum by performing correction on an image datum based on the plurality of reference data. The interpolation circuit determines whether the image datum is less than a reference value, calculates the corrected datum using a first interpolation method when the image datum is less than the reference value, and calculates the corrected datum using a second interpolation method different from the first interpolation method when the image datum is equal to or greater than the reference value. When the corrected datum is calculated using the first interpolation method, the interpolation circuit calculates the corrected datum based on a first reference datum, which corresponds to a product of the image datum and the reference value, among the plurality of reference data.

公开(公告)号：US20170206856A1

公开(公告)日：2017-07-20

申请号：US15402458

申请日：2017-01-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Byoung-Ju Song ,  Deok Soo Park

IPC: G09G5/06 ,  G09G5/10

CPC classification number: G09G5/06 ,  G09G5/10 ,  G09G5/363 ,  G09G2320/0626 ,  G09G2320/0673 ,  G09G2360/08 ,  G09G2360/16

Abstract: A display controller includes a lookup table configured to store a plurality of reference data and an interpolation circuit configured to calculate a corrected datum by performing correction on an image datum based on the plurality of reference data. The interpolation circuit determines whether the image datum is less than a reference value, calculates the corrected datum using a first interpolation method when the image datum is less than the reference value, and calculates the corrected datum using a second interpolation method different from the first interpolation method when the image datum is equal to or greater than the reference value. When the corrected datum is calculated using the first interpolation method, the interpolation circuit calculates the corrected datum based on a first reference datum, which corresponds to a product of the image datum and the reference value, among the plurality of reference data.

公开(公告)号：US11928995B2

公开(公告)日：2024-03-12

申请号：US17581234

申请日：2022-01-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Joo Hyuk Yum ,  Deok Soo Park ,  Byoung-Ju Song

IPC: G09G3/00 ,  H01L51/56 ,  H10K71/00

CPC classification number: G09G3/006 ,  H10K71/00 ,  G09G2320/0242

Abstract: A display test apparatus includes a measuring apparatus and a calculating device connected to the measuring apparatus. The measuring apparatus provides a sample pixel value to a first display device including a first display panel, measures a first color coordinate value of an image displayed by the first display panel in response to the sample pixel value. The calculating device generates a first parameter of the first display panel in response to the first color coordinate value, generates a target color coordinate value in response to the sample pixel value, and generates a first mapping table in response to the first color coordinate value, the first parameter and the target color coordinate value.