Patent ID: 9229545
Filing Date: 2016-01-05
CPC Classification: G06F

Claim Text:
1. An optical navigation apparatus, comprising: a light source unit, being configured to generate a beam of light; an image sensing unit, being configured to capture a plurality of first images within a first time interval and a plurality of second images within a second time interval, wherein the first time interval comes immediately after the second time interval; and a processing unit, being electrically connected to the light source unit and the image sensing unit and configured to determine that the light is not projected onto a touch object within the second time interval according to the second images and the light is projected onto the touch object within the first time interval according to the first images, activate a resolution adjustment mechanism in response to a change from determining the light being not projected onto the touch object to determining the light being projected onto the touch object, calculate a piece of displacement information related to the touch object according to the first images, generate a comparison result by comparing the piece of displacement information with a first threshold, and set a displacement resolution of the optical navigation apparatus according to the comparison result.