US 12,086,361 B2
Touch screen controller, touch screen driving circuit including the same and touch screen system
Changju Lee, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Oct. 31, 2022, as Appl. No. 17/977,143.
Application 17/977,143 is a continuation of application No. 17/318,288, filed on May 12, 2021, granted, now 11,487,386, issued on Nov. 1, 2022.
Claims priority of application No. 10-2020-0073730 (KR), filed on Jun. 17, 2020.
Prior Publication US 2023/0050409 A1, Feb. 16, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 3/041 (2006.01); G09G 3/20 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/04182 (2019.05) [G06F 3/0412 (2013.01); G09G 3/20 (2013.01); G06F 3/04166 (2019.05); G06F 3/0446 (2019.05); G09G 2310/08 (2013.01); G09G 2360/18 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A touch screen system comprising:
a touch screen comprising a display panel and a touch panel; and
a touch screen driving circuit configured to drive the touch screen,
wherein the touch screen driving circuit comprises:
a display noise table (DNT) storing display noise information obtained by previously measuring a plurality of display noise values according to at least one of image data displayed on the touch screen and a driving state of the touch screen in a database;
a feature extractor configured to extract a plurality of feature values from at least one of current image data to be displayed on the display panel and at least one of a current driving state of the touch screen;
a DNT controller configured to output a display noise value corresponding to a combination of the plurality of the feature values from the DNT based on the plurality of feature values; and
a processor configured to generate a touch value from which display noise is removed based on the display noise value.