US 11,672,444 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 Jan. 24, 2022, as Appl. No. 17/582,083.
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, issued on Oct. 20, 2020.
Application 16/700,368 is a continuation of application No. 16/362,880, filed on Mar. 25, 2019, granted, now 10,524,700, issued on Jan. 7, 2020.
Application 16/362,880 is a continuation of application No. 14/686,974, filed on Apr. 15, 2015, granted, now 10,285,627, issued on May 14, 2019.
Prior Publication US 2022/0142512 A1, May 12, 2022
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)] 8 Claims
OG exemplary drawing
 
1. An action recognition system, comprising:
a body configured to be disposed on a movable part of a user;
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 movable part;
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 movable part and to generate a light sensing signal in responsive to a muscular variation of the movable part 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 muscular variation, 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 characteristic vector, 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 disposed in a wearable device, the processing module operable to cause the wearable device to perform a function that corresponds to the action of the user.