US 12,185,902 B2
Robot and movable device capable of identifying surface material
Chung-Ting Yang, Hsin-Chu County (TW); and Kai-Ho Tsai, Hsin-Chu County (TW)
Assigned to PIXART IMAGING INC., Hsin-Chu County (TW)
Filed by PixArt Imaging Inc., Hsin-Chu County (TW)
Filed on Jul. 12, 2023, as Appl. No. 18/221,084.
Application 18/221,084 is a continuation of application No. 17/584,796, filed on Jan. 26, 2022, granted, now 11,744,424.
Application 17/584,796 is a continuation of application No. 16/541,152, filed on Aug. 15, 2019, granted, now 11,278,172.
Claims priority of provisional application 62/742,502, filed on Oct. 8, 2018.
Prior Publication US 2023/0355063 A1, Nov. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A47L 9/28 (2006.01); A47L 9/30 (2006.01); A47L 11/40 (2006.01); B25J 11/00 (2006.01); B25J 19/02 (2006.01)
CPC A47L 9/2826 (2013.01) [A47L 9/30 (2013.01); A47L 11/4011 (2013.01); B25J 11/0085 (2013.01); B25J 19/022 (2013.01); A47L 2201/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A robot, configured to be moved on an operation surface, and comprising:
a first light source, configured to illuminate the operation surface;
a second light source, configured to illuminate the operation surface;
a first image sensor, configured to operate corresponding to the first light source and capture reflected light from the operation surface to output a first image frame;
a second image sensor, configured to operate corresponding to the second light source and capture reflected light from the operation surface to output a second image frame; and
a processor, configured to
switch an operating light source from the first light source to the second light source, and
identify whether to switch the operating light source back to the first light source according to the second image frame captured by the second image sensor when the second light source is used as the operating light source to accordingly identify a material of the operation surface.