US 12,067,907 B2
Position information acquisition device, head-mounted display, and position information acquisition method
Akihiro Takano, Tokyo (JP); Yoshihiro Myokan, Tokyo (JP); and Tetsugo Inada, Tokyo (JP)
Assigned to Sony Interactive Entertainment Inc., Tokyo (JP)
Appl. No. 18/044,853
Filed by Sony Interactive Entertainment Inc., Tokyo (JP)
PCT Filed Sep. 23, 2020, PCT No. PCT/JP2020/035866
§ 371(c)(1), (2) Date Mar. 10, 2023,
PCT Pub. No. WO2022/064576, PCT Pub. Date Mar. 31, 2022.
Prior Publication US 2023/0335024 A1, Oct. 19, 2023
Int. Cl. G09G 3/00 (2006.01); G01S 17/08 (2006.01); G06F 3/01 (2006.01)
CPC G09G 3/001 (2013.01) [G01S 17/08 (2013.01); G06F 3/012 (2013.01); G09G 2354/00 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A position information acquisition device comprising:
a degree observer configured to acquire a temporal change in a degree of photons resulting from a pulsed irradiation light being reflected by an object;
a distance acquirer configured to detect a local maximum point in the temporal change in the degree and acquire a distance to the object on a basis of a time point at which the local maximum point appears; and
a data output unit configured to output information regarding the distance, wherein
the distance acquirer is configured to exclude, with reference to a maximum value among a plurality of the local maximum points detected in the temporal change of the degree, the local maximum point that is less than a predetermined proportion of the maximum value from a target for distance acquisition.