公开(公告)号：US10444860B2

公开(公告)日：2019-10-15

申请号：US16003646

申请日：2018-06-08

Applicant: PixArt Imaging Inc.

Inventor： Willie Song

IPC: G06F3/03 ,  G06F3/0354 ,  G06T5/00 ,  G06T5/20 ,  G06T5/50 ,  G06T7/00

Abstract: There is provided a failure identification method of an optical navigation device including the steps of: constructing a fixed noise map according to image frames captured by an image sensor; calculating a feature value of the fixed noise map; identifying whether the fixed noise map is uniform or not according to the feature value; and generating an alert signal when the fixed noise map is non-uniform for indicating failure of the optical navigation device.

公开(公告)号：US09489066B2

公开(公告)日：2016-11-08

申请号：US13927221

申请日：2013-06-26

Applicant: PIXART IMAGING INC.

Inventor： Willie Song

IPC: G06F3/0354 ,  G06F3/038

CPC classification number: G06F3/038 ,  G06F3/03543

Abstract: A computer system includes a host and a mouse device. The host is configured to output a screen size signal. The mouse device adjusts a DPI value thereof according to the screen size signal from the host. The present disclosure further provides an operating method of the computer system.

Abstract translation: 计算机系统包括主机和鼠标设备。 主机配置为输出屏幕尺寸信号。 鼠标装置根据来自主机的屏幕尺寸信号来调整其DPI值。 本公开还提供了一种计算机系统的操作方法。

公开(公告)号：US09310903B2

公开(公告)日：2016-04-12

申请号：US14100120

申请日：2013-12-09

Applicant: PIXART IMAGING INC.

Inventor： Willie Song ,  Kevin Len-Li Lim

IPC: G06F3/038 ,  G06F3/0354 ,  A63F13/213

CPC classification number: G06F3/0383 ,  A63F13/213 ,  G06F3/0317 ,  G06F3/03543 ,  G06F2203/0381

Abstract: A displacement detection device includes an image sensor, a processing unit and an output unit. The image sensor is configured to detect reflected light from a working surface to successively output image frames. The processing unit is configured to identify a hovering height and calculate a first axis displacement and a second axis displacement according to the image frames. The output unit is controlled by the processing unit to output a first ratio of the first axis displacement but not to output the second axis displacement when the hovering height is higher than a predetermined height.

Abstract translation: 位移检测装置包括图像传感器，处理单元和输出单元。 图像传感器被配置为检测来自工作表面的反射光以连续地输出图像帧。 处理单元被配置为识别悬停高度并根据图像帧计算第一轴位移和第二轴位移。 输出单元由处理单元控制以输出第一轴位移的第一比例，但是当悬停高度高于预定高度时不输出第二轴位移。

公开(公告)号：US10511288B2

公开(公告)日：2019-12-17

申请号：US16446699

申请日：2019-06-20

Applicant: PixArt Imaging Inc.

Inventor： Kian-Ming Chin ,  Willie Song

IPC: H03H17/02

Abstract: A navigation device including a digital filter configured to smooth tracking is provided. The digital filter is configured to sequentially receive input data and output a tap sum, and calculate a quotient and a remainder by dividing an accumulation value with an average number, wherein the remainder is feedback to the tap sum for updating the accumulation value and the quotient is configured as output data.

公开(公告)号：US11385069B2

公开(公告)日：2022-07-12

申请号：US16705121

申请日：2019-12-05

Applicant: PixArt Imaging Inc.

Inventor： Willie Song ,  Zi Hao Tan

IPC: G01C21/36 ,  G05D1/02

Abstract: An optical navigation system comprising a control circuit and an optical navigation device. The optical navigation device comprises: an image sensor, configured to generate a plurality of image frames; and a motion reporting device, configured to report a first motion of the optical navigation device to the control circuit at a first time after a reference time, and configured to report a second motion to the control circuit at a second time after the first time. The first motion and the second motion are calculated according to the image frames. The control circuit calculates a first scaled motion according to the first motion, the second motion, a first time difference between the first time and the reference time, and a second time difference between the first time and the second time.

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：US09329702B2

公开(公告)日：2016-05-03

申请号：US13935741

申请日：2013-07-05

Applicant: PIXART IMAGING INC.

Inventor： Willie Song

IPC: G06F3/033 ,  G06F3/0354 ,  G06F3/03 ,  G06F3/038

CPC classification number: G06F3/03543 ,  G06F3/0317 ,  G06F3/0383

Abstract: A navigation device includes an image sensor, a memory unit and a processing unit. The image sensor is configured to capture an image frame of a work surface. The memory unit previously saves a lookup table including surface quality profiles of different surface categories. The processing unit is configured to calculate surface qualities of the work surface associated with different quality thresholds and to compare the surface qualities with the lookup table to determine the surface category of the work surface thereby selecting a tracking strategy associated with the surface category of the work surface.

Abstract translation: 导航装置包括图像传感器，存储单元和处理单元。 图像传感器被配置为捕获工作表面的图像帧。 存储器单元先前保存包括不同表面类别的表面质量轮廓的查找表。 处理单元被配置为计算与不同质量阈值相关联的工作表面的表面质量，并且将表面质量与查找表进行比较以确定工作表面的表面类别，从而选择与工件的表面类别相关联的跟踪策略 表面。