US 11,984,097 B2
Display apparatus having a whiteboard application with multi-layer superimposition and display method thereof
Baocheng Li, Shandong (CN); Min Wang, Shandong (CN); Zhenbao Zhang, Shandong (CN); Ying Cao, Shandong (CN); Jiashan Liu, Shandong (CN); and Hong Yu, Shandong (CN)
Assigned to HISENSE VISUAL TECHNOLOGY CO., LTD., Shandong (CN)
Filed by HISENSE VISUAL TECHNOLOGY CO., LTD., Shandong (CN)
Filed on Jan. 20, 2023, as Appl. No. 18/157,324.
Application 18/157,324 is a continuation of application No. PCT/CN2021/117796, filed on Sep. 10, 2021.
Claims priority of application No. 202011188310.2 (CN), filed on Oct. 30, 2020; application No. 202011528031.6 (CN), filed on Dec. 22, 2020; and application No. 202110171543.X (CN), filed on Feb. 8, 2021.
Prior Publication US 2023/0162704 A1, May 25, 2023
Int. Cl. G09G 5/14 (2006.01); G06F 3/041 (2006.01); G06F 3/0488 (2022.01); G06T 3/4007 (2024.01); G06T 7/90 (2017.01)
CPC G09G 5/14 (2013.01) [G06F 3/041 (2013.01); G06F 3/0488 (2013.01); G06T 3/4007 (2013.01); G06T 7/90 (2017.01); G06T 2207/10024 (2013.01); G09G 2354/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display apparatus, comprising:
a display, configured to display an image and/or user interface;
a touch component, configured to detect a touch trajectory from a user; and
a controller, connected with the display and touch component and configured to:
present a first layer and a second layer below the first layer on the display during running of a whiteboard application, wherein the first layer is configured to receive the touch trajectory from the user, the second layer is configured to present elements of the whiteboard application, and the elements of the whiteboard application include a menu and a toolbar;
obtain a touch trajectory pattern from the user in the first layer and a background pattern in the second layer, wherein resolution of the touch trajectory pattern is different from resolution of the background pattern;
extract a boundary color and a boundary position of the touch trajectory pattern;
extract a background color of a region associated with the boundary position from the second layer;
determine an interpolation result according to the boundary color and the background color, and perform an interpolation operation on the touch trajectory pattern to generate a converted pattern; wherein resolution of the converted pattern is equal to the resolution of the background pattern; and
superimpose the converted pattern and the background pattern to control the display to present a superimposition result of the converted pattern and the background pattern.