公开(公告)号：US12236019B2

公开(公告)日：2025-02-25

申请号：US18207691

申请日：2023-06-09

Applicant: PixArt Imaging Inc.

Inventor： Zi Hao Tan ,  Joon Chok Lee ,  Kevin Len-Li Lim

IPC: G06F3/0354 ,  G06F3/03 ,  G06F3/038 ,  G06F3/041

Abstract: A pointing method, applied to a pointing device comprising a processing circuit, comprising: (a) receiving input delta by the processing circuit, wherein the input delta indicates supposed movement of the pointing device; (b) adjusting the input delta to generate output delta by the processing circuit, wherein the input delta has a first magnitude and the output delta has a second magnitude, wherein the second magnitude is smaller than or equal to the first magnitude; and (c) output the output delta by the processing circuit.

公开(公告)号：US12216609B2

公开(公告)日：2025-02-04

申请号：US17979762

申请日：2022-11-03

Applicant: PIXART IMAGING INC.

Inventor： Yen-Hsiang Chew

IPC: G06F13/42

Abstract: There is provided an operation of a 2-wire interface including: performing, by a master device, at least one transaction with a slave device to compare a calculated expected value and a return value of a register to confirm whether an out-of-sync occurs, and resetting a state machine of the slave device to a reset_done state and receiving, by the maser device, an acknowledge byte from the slave device to recover a synchronization between the master device and the slave device when the out-of-sync occurs.

公开(公告)号：US12211219B2

公开(公告)日：2025-01-28

申请号：US17547269

申请日：2021-12-10

Applicant: PixArt Imaging Inc.

Inventor： Jeng-Yue Weng ,  Tzung-Min Su ,  Feng-Chi Liu

IPC: G06T7/292 ,  G06T7/215

Abstract: Disclosed in a movement direction determination system comprising a first detection region, a second detection region and a processing circuit. The first detection region and the second detection region respectively comprises an optical sensor. The processing circuit determines a movement direction of an object according to the optical data generated by the first detection region and the second detection region. The present invention also discloses a movement direction determination system using a single detection region. The present invention also discloses an object volume computation system which can compute an object volume according to sensed optical data. The disclosed movement direction determination system can be used for various applications and the object volume computation system can assist product confirmation.

公开(公告)号：US12204114B2

公开(公告)日：2025-01-21

申请号：US18422554

申请日：2024-01-25

Applicant: PixArt Imaging Inc.

Inventor： Sai-Mun Lee

IPC: G02B27/09 ,  G06F3/03 ,  G06F3/0354

Abstract: There is provided an illumination system of a navigation device including a light beam shaping optics, and a first light source and a second light source having different characteristics. The light beam shaping optics is used to shape light beams emitted by the first light source and the second light source to illuminate a work surface with substantially identical incident angles and/or beam sizes.

公开(公告)号：US12204029B2

公开(公告)日：2025-01-21

申请号：US18378837

申请日：2023-10-11

Applicant: PixArt Imaging Inc.

Inventor： Guo-Zhen Wang ,  Hui-Hsuan Chen

IPC: G01S17/66 ,  G01S7/48 ,  G01S7/481 ,  G01S17/46 ,  G01S17/50 ,  G06T7/521 ,  H04N23/51 ,  H04N23/56 ,  G01S17/08 ,  G01S17/48 ,  H04N5/33

Abstract: There is provided a mobile robot that performs the obstacle avoidance and visual simultaneous localization and mapping (VSLAM) according to image frames captured by the same optical sensor. The mobile robot includes a pixel array and a processor. An upper part of the pixel array is not coated with any filter and a lower part of the pixel array is coated with an IR filter. The processor performs range estimation using pixel data corresponding to the lower part of the pixel array, and perform the VSLAM using pixel data corresponding to the upper part of the pixel array.

公开(公告)号：US12203956B2

公开(公告)日：2025-01-21

申请号：US18528828

申请日：2023-12-05

Applicant: PixArt Imaging Inc.

Inventor： Chung-Min Thor ,  Kuan-Choong Shim

IPC: G01P3/486 ,  G01D5/249 ,  G01D5/34 ,  G01D5/347 ,  G01P3/36

Abstract: There is provided an optical encoder including a phase shifter circuit and a multiple hysteresis comparators. The phase shifter circuit receives four input signals, and outputs multiple phase shifted signals based on the four input signals. Each of the multiple hysteresis comparators uses a changeable operation hysteresis level to compare a couple of phase shifted signals among the multiple phase shifted signals, wherein the changeable operation hysteresis level is determined corresponding to a signal frequency of the four input signals.

公开(公告)号：US12203838B2

公开(公告)日：2025-01-21

申请号：US18409848

申请日：2024-01-11

Applicant: PixArt Imaging Inc.

Inventor： Yen-Chang Chu ,  Cheng-Nan Tsai ,  Chih-Ming Sun

IPC: G01N15/06 ,  G08B17/107 ,  G08B29/18 ,  G01N15/00 ,  G01N15/075

Abstract: There is provided a smoke detector including a substrate, a light source and a light sensor. The light source and the light sensor are arranged adjacently on the substrate. The substrate is arranged with an asymmetric structure to cause an illumination region of the light source to deviate toward the light sensor thereby increasing a ratio of light intensity reflected by smoke with respect to reference light intensity.

公开(公告)号：US20250020833A1

公开(公告)日：2025-01-16

申请号：US18898017

申请日：2024-09-26

Applicant: PixArt Imaging Inc.

Inventor： HUI-HSUAN CHEN ,  YEN-HUNG WANG ,  WEN-YEN SU

IPC: G02B3/10 ,  B29D11/00 ,  G02B3/08 ,  G06F3/03 ,  G06F3/0354

Abstract: There is provided a lens including a first curved surface and a second curved surface. The first curved surface and the second curved surface have different focal distances and are arranged interlacedly along a radial direction of the lens.

公开(公告)号：US12195073B2

公开(公告)日：2025-01-14

申请号：US17857194

申请日：2022-07-05

Applicant: PixArt Imaging Inc.

Inventor： Chin-Hua Hu ,  Yu-Han Chen ,  Yu-Sheng Lin

IPC: B62D1/04 ,  G06F3/044 ,  G06F3/0488

Abstract: A pressure sensing device, comprising: a frame work; a capacitive pressure sensor layer, surrounding the frame work; a capacitive touch sensor layer; and a flexible material layer, located between the pressure sensor layer and the touch sensor layer and surrounding the capacitive pressure sensor layer. The capacitive touch sensor layer is above the flexible material layer when the capacitive pressure sensor layer is below the flexible material layer. The capacitive touch sensor layer has a first driving electrode and a first sensing electrode. The capacitive pressure sensor layer has a second driving electrode and a second sensing electrode. A 3D gesture control system and a vehicle control system applying the pressure sensing device are also disclosed. Via the pressure sensing device, the 3D gesture control system and the vehicle control system can generate control commands according to a touch or a pressure provided by a user.

公开(公告)号：US12192655B2

公开(公告)日：2025-01-07

申请号：US18503265

申请日：2023-11-07

Applicant: PIXART IMAGING INC. ,  TAIWAN SPACE AGENCY

Inventor： Ren-Chieh Liu ,  Chao-Chi Lee ,  Yi-Yuan Chen ,  En-Feng Hsu

IPC: H04N25/768 ,  H04N25/531 ,  H04N25/75

Abstract: The present disclosure provides a time delay integration (TDI) sensor using a rolling shutter. The TDI sensor includes multiple pixel columns. Each pixel column includes multiple pixels arranged in an along-track direction, wherein two adjacent pixels or two adjacent pixel groups in every pixel column have a separation space therebetween. The separation space is equal to a pixel height multiplied by a time ratio of a line time difference of the rolling shutter and a frame period, or equal to a summation of at least one pixel height and a multiplication of the pixel height by the time ratio of the line time difference and the frame period. The TDI sensor further records defect pixels of a pixel array such that in integrating pixel data to integrators, the pixel data associated with the defect pixels is not integrated into corresponding integrators.