US 12,573,356 B2 · Anti-flicker method and apparatus for android whiteboard

Abstract

The present application discloses an anti-flicker method and apparatus for an Android whiteboard, wherein the method includes: determining a drawing canvas, and locking a display screen of the Android whiteboard, wherein the display screen is used to display a canvas drawing result; acquiring relevant data of a floating window; creating a target canvas by cropping the drawing canvas based on the relevant data; unlocking the display screen, and executing a drawing function through the target canvas. Since the Android whiteboard uses the target canvas created based on the floating window outline for drawing, thus, when the Android whiteboard needs to display a writing trajectory crossing over other floating window controls covering the Android whiteboard interface, it does not show the writing trajectory, thereby avoiding the occurrence of jaggies.

Claims12

Dependent claims

An anti-flicker method for an electronic whiteboard, wherein the method comprises:

determining a drawing canvas, and locking a display screen of the electronic whiteboard, wherein the display screen is used to display a canvas drawing result;
acquiring relevant data of a floating window;
wherein the relevant data is location data used to determine a corresponding location of the floating window;
determining a location area corresponding to the floating window on the drawing canvas based on the relevant data, and designating the location area as a pre-cropping area;
creating a target canvas by cropping the pre-cropping area on the drawing canvas, wherein the cropping comprises overlay-type cropping and hidden-type cropping;
unlocking the display screen, and executing a drawing function through the target canvas.

3 more elements

An anti-flicker apparatus for an electronic whiteboard, wherein the apparatus comprises:

a determining and locking unit, configured to determine a drawing canvas, and lock a display screen of the electronic whiteboard, wherein the display screen is used to display a canvas drawing result;
an acquiring unit, configured to acquire relevant data of a floating window;
wherein the relevant data is location data used to determine a corresponding location of the floating window;
a setting unit, configured to determine a location area corresponding to the floating window on the drawing canvas based on the relevant data, and designate the location area as a pre-cropping area;
a creating unit, configured to create a target canvas by cropping the pre-cropping area on the drawing canvas, wherein the cropping comprises overlay-type cropping and hidden-type cropping;
an unlocking and drawing unit, configured to unlock the display screen, and execute a drawing function through the target canvas.

3 more elements

Dependencies are inferred from the claim text.

Anti-flicker method and apparatus for android whiteboard

Life of this patent

Anti-flicker method and apparatus for android whiteboard

Life of this patent

Abstract

Claims12