Patent Document ID: 9229581
Application ID: 13352299
Patent Status: 1

Claim One:
1. A method of detecting a gesture, the method comprising: selectively blocking a portion of light reflected from an object from impinging on a light sensor assembly depending upon a position of the object relative to the light sensor assembly using a light modifying wall structure disposed adjacent to the light sensor assembly, the light modifying wall structure comprising a plurality of layers and a plurality of vias, respective ones of the plurality of layers and the plurality of vias offset in a stair-step fashion with respect to a center axis defined perpendicular to a surface of the light sensor assembly; calculating one or more differential signals according to time dependent signals output from the light sensor assembly, the light sensor assembly comprising a plurality of light sensors configured to detect light reflected from the object and to output the time dependent signals in response thereto; and determining an object motion direction of the object passing over the light sensor assembly by applying vector analysis to the one or more differential signals.