公开(公告)号：US11150748B1

公开(公告)日：2021-10-19

申请号：US16896698

申请日：2020-06-09

Applicant: PIXART IMAGING INC.

Inventor： Zi-Hao Tan ,  Willie Song

IPC: G06F3/0354 ,  G06F3/039

Abstract: A mouse device and method for calibrating sensitivity thereof are provided. The method for calibrating sensitivity includes the following steps. First, sampling information is obtained under a test mode. A calibration factor is obtained according to the sampling information and a preset value. The calibration factor can be obtained by dividing the preset value by the resolution. Under a normal mode, an actual count detected by the mouse device is calibrated according to the calibration factor. Whenever the mouse device is moved on the operating surface for a distance, the actual count detected by the mouse device can be calibrated to obtain a calibrated count. The calibrated count can be calculated by multiplying the actual count by the calibration factor.

公开(公告)号：US10474257B2

公开(公告)日：2019-11-12

申请号：US16401502

申请日：2019-05-02

Applicant: PixArt Imaging Inc.

Inventor： Zi-Hao Tan ,  Kevin Len-Li Lim

IPC: G06F3/038 ,  G06F3/03 ,  G06F3/0354 ,  G06T7/246

Abstract: An optical navigation device including an image sensor, a navigation engine, a smoothing engine and an adjusting interface. The image sensor generates image frames. The navigation engine calculates displacement according to the image frames. The smoothing engine changes a smoothing level for smoothing the calculated displacement according to a trigger signal sent from the adjusting interface.