US 12,376,672 B2
System and method for tracking an oral care device
Vincentius Paulus Buil, Veldhoven (NL); Lucas Jacobus Franciscus Geurts, Sterksel (NL); Frederik Jan De Bruijn, Eindhoven (NL); and Karl Catharina Van Bree, Eindhoven (NL)
Assigned to KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Filed on May 4, 2021, as Appl. No. 17/307,342.
Application 17/307,342 is a continuation of application No. 16/061,808, granted, now 10,993,524, previously published as PCT/EP2016/081029, filed on Dec. 14, 2016.
Claims priority of provisional application 62/267,334, filed on Dec. 15, 2015.
Prior Publication US 2021/0251380 A1, Aug. 19, 2021
Int. Cl. A46B 15/00 (2006.01); A61C 17/00 (2006.01)
CPC A46B 15/0044 (2013.01) [A46B 15/0036 (2013.01); A61C 17/00 (2013.01); A46B 2200/1066 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for determining, using an oral care system comprising an oral care device and a computing device separate from the oral care device, a location of the oral care device within a user's mouth, comprising the steps of:
emitting, by a first light source located on the oral care device inside the user's mouth, light through a cheek of the user;
generating, by an optical sensor of the computing device located outside the user's mouth, a first light signal in response to receiving the light emitted by the first light source through the cheek of the user;
identifying, by the computing device from the generated first light signal, a location of the first light source;
identifying, by the computing device from the first light signal, at least one feature of the user's face, captured by the optical sensor of the computing device;
estimating, by the computing device, a location of the user's teeth according to the identified at least one feature of the user's face; and
comparing, by the computing device, the location of the first light source with the estimated location of the user's teeth to determine a position of the oral care device with respect to the user's teeth.