公开(公告)号：US10572033B2

公开(公告)日：2020-02-25

申请号：US15927254

申请日：2018-03-21

申请人： PIXART IMAGING INC.

发明人： Joon-Chok Lee ,  Kevin Len-Li Lim

IPC分类号： G06F3/0354 ,  G06F3/044 ,  G06F3/0362

摘要： There is provided a mouse device including a mouse case, a detection switch and a control chip. The mouse case is held by a user and operated on a work surface. The detection switch is arranged on the mouse case and configured to output a detected signal according to user operation. The control chip is electrically coupled to the detection switch and configured to enable or disable an angle snapping function according to the detected signal.

公开(公告)号：US20180157346A1

公开(公告)日：2018-06-07

申请号：US15883696

申请日：2018-01-30

申请人： PixArt Imaging Inc.

发明人： Joon-Chok Lee ,  Kevin Len-Li Lim

IPC分类号： G06F3/0354 ,  G06F3/03 ,  G01B11/14

CPC分类号： G06F3/03543 ,  G01B11/14 ,  G06F3/0304

摘要： There is provided a navigation device including an image sensor and a processing unit. The image sensor is configured to capture reflected light of a work surface with a low-speed period to generate image frames, wherein the image sensor captures a pair of image frames in each low-speed period. The processing unit is configured to calculate acceleration according to the pair of image frames to accordingly identify whether to adjust the low-speed period to a high-speed period.

公开(公告)号：US11953371B2

公开(公告)日：2024-04-09

申请号：US17863663

申请日：2022-07-13

申请人： PixArt Imaging Inc.

发明人： Zi-Hao Tan ,  Joon-Chok Lee

IPC分类号： G01J1/42 ,  G01J1/44

CPC分类号： G01J1/4204 ,  G01J1/44 ,  G01J2001/446

摘要： There is provided an optical sensor including a photodiode, a wave converter, a pixel array and a processor. The photodiode detects ambient light flicker to generate sine waves. The wave converter converts the sine waves to square waves. The processor uses a sampling frequency to count the square waves, and identifies whether the ambient light flicker is well detected according to a counting value of each square wave and a counting value variation of multiple square waves within a count period to accordingly determine whether to adjust an acquiring phase of the image frame.

公开(公告)号：US10928931B2

公开(公告)日：2021-02-23

申请号：US15883696

申请日：2018-01-30

申请人： PixArt Imaging Inc.

发明人： Joon-Chok Lee ,  Kevin Len-Li Lim

IPC分类号： G06F3/0354 ,  G01B11/14 ,  G06F3/03

摘要： There is provided a navigation device including an image sensor and a processing unit. The image sensor is configured to capture reflected light of a work surface with a low-speed period to generate image frames, wherein the image sensor captures a pair of image frames in each low-speed period. The processing unit is configured to calculate acceleration according to the pair of image frames to accordingly identify whether to adjust the low-speed period to a high-speed period.

公开(公告)号：US10775868B2

公开(公告)日：2020-09-15

申请号：US16171485

申请日：2018-10-26

申请人： PixArt Imaging Inc.

发明人： Joon-Chok Lee ,  Kevin Len-Li Lim

IPC分类号： G06F1/32 ,  G06F3/03 ,  G06F1/3234 ,  H04N5/235 ,  H04N5/3745 ,  H04N5/357 ,  G06F3/0354 ,  G06F3/038

摘要： There is provided a navigation device including an image sensor, an analog to digital converter and a processor. The image sensor is used to output an analog image using an exposure time. The analog to digital converter is used to convert the analog image to a digital image using a resolution. The processor is used to identify an image quality of the digital image, and adjust at least one of the exposure time of the image sensor and the resolution of the analog to digital converter according to the image quality thereby adjusting the operation power by changing data length actually processed by the processor.

公开(公告)号：US11785359B2

公开(公告)日：2023-10-10

申请号：US18097207

申请日：2023-01-14

申请人： PixArt Imaging Inc.

发明人： Joon-Chok Lee ,  Kevin Len-Li Lim

IPC分类号： H04N25/67 ,  G06F3/0354 ,  G06T5/20

CPC分类号： H04N25/67 ,  G06F3/0354 ,  G06T5/20

摘要： There is provided an optical navigation device including an image sensor and a processing unit. The image sensor outputs successive image frames. The processing unit calculates a contamination level and a motion signal based on filtered image frames, and determines whether to update a fixed pattern noise (FPN) stored in a frame buffer according to a level of FPN subtraction, the calculated contamination level and the calculated motion signal to optimize the update of the fixed pattern noise.

公开(公告)号：US11582413B2

公开(公告)日：2023-02-14

申请号：US17408733

申请日：2021-08-23

申请人： PixArt Imaging Inc.

发明人： Joon-Chok Lee ,  Kevin Len-Li Lim

IPC分类号： H04N5/365 ,  G06F3/0354 ,  G06T5/20

摘要： There is provided an optical navigation device including an image sensor and a processing unit. The image sensor outputs successive image frames. The processing unit calculates a contamination level and a motion signal based on filtered image frames, and determines whether to update a fixed pattern noise (FPN) stored in a frame buffer according to a level of FPN subtraction, the calculated contamination level and the calculated motion signal to optimize the update of the fixed pattern noise.

公开(公告)号：US11422025B2

公开(公告)日：2022-08-23

申请号：US17124332

申请日：2020-12-16

申请人： PixArt Imaging Inc.

发明人： Zi-Hao Tan ,  Joon-Chok Lee

IPC分类号： G01J1/42 ,  G01J1/44

摘要： There is provided an optical sensor including a photodiode, a wave converter, a pixel array and a processor. The photodiode detects ambient light flicker to generate sine waves. The wave converter converts the sine waves to square waves. The processor uses a sampling frequency to count the square waves, and identifies whether the ambient light flicker is well detected according to a counting value of each square wave and a counting value variation of multiple square waves within a count period to accordingly determine whether to adjust an acquiring phase of the image frame.

公开(公告)号：US11327550B2

公开(公告)日：2022-05-10

申请号：US16991255

申请日：2020-08-12

申请人： PixArt Imaging Inc.

发明人： Joon-Chok Lee ,  Kevin Len-Li Lim

IPC分类号： G06F1/3234 ,  H04N5/235 ,  H04N5/3745 ,  H04N5/357 ,  G06F3/0354 ,  G06F3/038 ,  G06F3/03

摘要： There is provided a navigation device including an image sensor, an analog to digital converter and a processor. The image sensor is used to output an analog image using an exposure time. The analog to digital converter is used to convert the analog image to a digital image using a resolution. The processor is used to identify an image quality of the digital image, and adjust at least one of the exposure time of the image sensor and the resolution of the analog to digital converter according to the image quality thereby adjusting the operation power by changing data length actually processed by the processor.

公开(公告)号：US11128825B2

公开(公告)日：2021-09-21

申请号：US16459626

申请日：2019-07-02

申请人： PixArt Imaging Inc.

发明人： Joon-Chok Lee ,  Kevin Len-Li Lim

IPC分类号： H04N5/365 ,  G06F3/0354 ,  G06T5/20

摘要： There is provided an optical navigation device including an image sensor and a processing unit. The image sensor outputs successive image frames. The processing unit calculates a contamination level and a motion signal based on filtered image frames, and determines whether to update a fixed pattern noise (FPN) stored in a frame buffer according to a level of FPN subtraction, the calculated contamination level and the calculated motion signal to optimize the update of the fixed pattern noise.