US 12,213,780 B2
Action recognition system and method thereof
Ren-Hau Gu, Hsin-Chu (TW); and Chung-Wen Lo, Santa Clara, CA (US)
Assigned to PIXART IMAGING INC., Hsin-Chu (TW)
Filed by PIXART IMAGING INC., Hsin-Chu (TW)
Filed on Mar. 15, 2024, as Appl. No. 18/605,924.
Application 18/605,924 is a continuation of application No. 18/135,807, filed on Apr. 18, 2023, granted, now 11,969,243.
Application 18/135,807 is a continuation of application No. 17/582,083, filed on Jan. 24, 2022, granted, now 11,672,444.
Application 17/582,083 is a continuation of application No. 17/015,641, filed on Sep. 9, 2020, granted, now 11,272,862.
Application 17/015,641 is a continuation of application No. 16/700,368, filed on Dec. 2, 2019, granted, now 10,806,378.
Application 16/700,368 is a continuation of application No. 16/362,880, filed on Mar. 25, 2019, granted, now 10,524,700.
Application 16/362,880 is a continuation of application No. 14/686,974, filed on Apr. 15, 2015, granted, now 10,285,627.
Prior Publication US 2024/0215868 A1, Jul. 4, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/11 (2006.01); A61B 5/00 (2006.01); A61B 5/024 (2006.01)
CPC A61B 5/1123 (2013.01) [A61B 5/1107 (2013.01); A61B 5/0059 (2013.01); A61B 5/02416 (2013.01); A61B 5/681 (2013.01); A61B 5/6824 (2013.01); A61B 2562/0219 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A wearable device, being suitable for wearing on a wrist of a user, the wearable device comprising:
a body;
at least one light emitting unit disposed on an inner side of the body, the light emitting unit operable to emit a light beam illuminating at least a portion of the wrist;
at least one light sensing unit disposed on the inner side of the body, the light sensing unit operable to sense the light beam reflected by the at least a portion of the wrist and to generate a light sensing signal in responsive to a movement of the user; and
an action recognition module, operable to process and analyze the received light sensing signal to establish a characteristic vector in responsive to the movement, and to identify and determine an action of the user according to the processed light sensing signal by performing an operation, so as to obtain the action corresponding to the received light sensing signal, wherein the action includes a movement or a motion of each finger, up bending, down bending, left movement, and right movement of a palm, palm opening, hand grabbing or hand rotation operation; and
a processing module operable to cause the wearable device to perform a function that corresponds to the action of the user.