US 12,405,723 B2
Spatial position indication system
Hajime Kumami, Saitama (JP); Koji Yoshida, Saitama (JP); Hiroshi Tamano, Saitama (JP); Hiroshi Munakata, Saitama (JP); and Yuanhao Chen, Saitama (JP)
Assigned to Wacom Co., Ltd., Saitama (JP)
Filed by Wacom Co., Ltd., Saitama (JP)
Filed on Mar. 3, 2023, as Appl. No. 18/178,397.
Application 18/178,397 is a continuation of application No. 16/809,334, filed on Mar. 4, 2020, granted, now 11,630,570.
Application 16/809,334 is a continuation of application No. PCT/JP2018/008894, filed on Mar. 8, 2018.
Claims priority of application No. 2017-169679 (JP), filed on Sep. 4, 2017.
Prior Publication US 2023/0205416 A1, Jun. 29, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 3/04883 (2022.01); G06F 3/01 (2006.01); G06F 3/0346 (2013.01); G06F 3/0354 (2013.01); G06F 3/041 (2006.01); G06F 3/042 (2006.01); G06F 3/046 (2006.01)
CPC G06F 3/04883 (2013.01) [G06F 3/011 (2013.01); G06F 3/014 (2013.01); G06F 3/016 (2013.01); G06F 3/017 (2013.01); G06F 3/0346 (2013.01); G06F 3/03545 (2013.01); G06F 3/0416 (2013.01); G06F 3/046 (2013.01); G06F 3/0425 (2013.01); G06F 2203/04101 (2013.01); G06F 2203/04106 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A position indication in a virtual reality (VR) space system comprising:
a tablet including a digitizer which, in operation, detects electrically a position of a pen-tip of an electronic pen;
a tracking device which, in operation, detects optically a position of a tracker that is different from the pen-tip of the electronic pen in a spatial region, the tracking device located over the tablet, wherein the tracking device is different from the digitizer, and wherein the tracking device, in operation, detects light emitted from the tracker; and
a processor which, in operation, (1) generates both a first coordinate corresponding to the pen-tip based on the position of the pen-tip detected electrically by the digitizer of the tablet and a second coordinate corresponding to the pen-tip based on the position of the tracker detected optically by the tracking device, (2) selects the first coordinate corresponding to the pen-tip based on the position of the pen-tip detected electrically by the digitizer of the tablet from both the first and second coordinate, and (3) transforms the selected first coordinate in a first coordinate system of the tablet into a third coordinate in a coordinate system of the VR space, an origin of the coordinate system of the VR space being different from an origin of the first coordinate system.