Patent ID: 11864864
Assignee: PIXART IMAGING INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 6:
7. A method for performing a registration process in a wearable device, comprising:
activating a light source of the wearable device to emit detection light, wherein the detection light includes different light rays corresponding to different wavelengths and the detection light is adjusted to cover different wavelength ranges so as to emit at least a first combination of light rays and a second combination of light rays, wherein the first combination of light rays is determined as a specific combination of light rays when the first combination of light rays causes a larger light intensity sensed by light sensor than the second combination of light rays;
calculating a light intensity sensed by a light sensor that is configured to sense the detection light reflected by or passing through an object; and
generating a registration value that is determined when the specific combination of light rays is emitted to the object, wherein the registration value serves as a threshold to detect whether or not the wearable device is properly worn by a person based on the light intensity.