US 12,002,409 B2
Computer
Tatsunori Kato, Saitama (JP); Yoshihiro Kotani, Saitama (JP); Hiroyuki Sakuma, Saitama (JP); Joo Hoon Lee, Saitama (JP); and Hiroshi Mizuhashi, Saitama (JP)
Assigned to Wacom Co., Ltd., Saitama (JP)
Filed by Wacom Co., Ltd., Saitama (JP)
Filed on Mar. 30, 2023, as Appl. No. 18/193,459.
Claims priority of application No. 2022-076942 (JP), filed on May 9, 2022.
Prior Publication US 2023/0360583 A1, Nov. 9, 2023
Int. Cl. G09G 3/20 (2006.01); G06F 3/0354 (2013.01); G06F 3/041 (2006.01)
CPC G09G 3/2096 (2013.01) [G06F 3/03545 (2013.01); G06F 3/04162 (2019.05); G09G 2320/0666 (2013.01); G09G 2340/0435 (2013.01); G09G 2340/10 (2013.01); G09G 2340/125 (2013.01); G09G 2354/00 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A computer comprising:
a host processor which, in operation, generates a stroke image representing a stroke indicated by a series of coordinate data indicating a plurality of positions of a pen on a touch surface and generates a video signal representing the stroke image;
a timing controller which, in operation, controls, based on the video signal, a potential of each of a plurality of gate lines provided in a display; and
a temporary stroke image generation processor which in operation, generates, in parallel with the host processor, a temporary stroke image representing a same stroke as the stroke represented by the stroke image; and
a scaler which, in operation, converts the video signal output from the host processor into a converted video signal corresponding to the display and outputs the converted video signal to the temporary stroke image generation processor,
wherein the temporary stroke image is superimposed on the video signal before the video signal is supplied to the timing controller, and
wherein the temporary stroke image generation processor, in operation, superimposes the temporary stroke image on the converted video signal output from the scaler and supplies the converted video signal with the temporary stroke image superimposed thereon to the timing controller.