US 12,141,430 B2
Systems and methods for managing digital notes
Pontus Axelsson, Stockholm (SE); Nicklas A. Ansman Giertz, New York, NY (US); Michael Rotstein, Stockholm (SE); John E. Karlsson, Brooklyn, NY (US); and Emre B. Ergenekon, Solna (SE)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US)
Appl. No. 18/014,577
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed Jul. 21, 2021, PCT No. PCT/IB2021/056605
§ 371(c)(1), (2) Date Jan. 5, 2023,
PCT Pub. No. WO2022/023890, PCT Pub. Date Feb. 3, 2022.
Claims priority of provisional application 63/058,058, filed on Jul. 29, 2020.
Prior Publication US 2023/0259270 A1, Aug. 17, 2023
Int. Cl. G06F 3/0488 (2022.01); G06F 3/0482 (2013.01)
CPC G06F 3/0488 (2013.01) [G06F 3/0482 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A computer-implemented method comprising:
detecting a drawing operation on a digital note;
in response to the detecting, adding a new drawing layer to a plurality of layers representing previous drawing operations, wherein each of the plurality of layers includes tiles representing portions of the drawing operations;
referencing tiles from a previous layer in the new drawing layer;
if the detected drawing operation includes a change to a tile from the previous layer, then using the tile with the change in the new drawing layer;
if the detected drawing operation does not include a change to a tile from one of the previous layers, then using the tile without the change in the new drawing layer; and
rendering the drawing operation in the tiles in the new drawing layer.