公开(公告)号：US09804689B2

公开(公告)日：2017-10-31

申请号：US14536769

申请日：2014-11-10

Applicant: PIXART IMAGING INC.

Inventor： Han-Ping Cheng ,  Chao-Chien Huang

IPC: G06F3/033 ,  G06F3/03 ,  G06F3/038 ,  G06F3/0346

CPC classification number: G06F3/0304 ,  G06F3/0346 ,  G06F3/0383

Abstract: A pointer positioning method for a handheld pointer device includes: capturing a first frame containing a reference point when the handheld pointer device updates a first tilt angle presently used to a second tilt angle; computing a first pointing coordinate according to the image position of the reference point in the first frame and the first tilt angle; computing a second pointing coordinate according to the image position of the reference point in the first frame and the second tilt angle; capturing a second frame containing the reference point to compute a third pointing coordinate according to the image position of the reference point in the second frame and the second tilt angle; generating a cursor parameter for controlling a display position of a cursor on a display apparatus according to the first pointing coordinate, the second pointing coordinate, and the third pointing coordinate.

公开(公告)号：US20240233141A9

公开(公告)日：2024-07-11

申请号：US17970542

申请日：2022-10-20

Applicant: PixArt Imaging Inc.

Inventor： Yi-Chung Chen ,  Chao-Chien Huang ,  Chung-Yuo Wu

IPC: G06T7/246 ,  A63F13/213 ,  A63F13/24 ,  G06F3/0338

CPC classification number: G06T7/248 ,  A63F13/213 ,  A63F13/24 ,  G06F3/0338 ,  A63F2300/1043 ,  A63F2300/1087

Abstract: A movement detection method, applied to a navigation input device with a navigation pattern comprising a center pattern and a radial pattern. The movement detection method comprises: (a)capturing a sensing image comprising a center pattern image and at least portion of a radial pattern image by an image sensor, wherein the center pattern image corresponds to the center pattern and the radial pattern image corresponding to the radial pattern; (b)computing a translation of the navigation input device according to shift of the center pattern image; and (c)computing a rotation angle of the navigation input device according to a first pattern relation between the center pattern image and a first portion of the radial pattern image. The translation and the rotation angle can be precisely and sensitively detected even if the joystick device is miniaturized, since the translation and the rotation angle are computed according to the navigation pattern.

公开(公告)号：US20220066497A1

公开(公告)日：2022-03-03

申请号：US17521883

申请日：2021-11-09

Applicant: PixArt Imaging Inc.

Inventor： Chao-Chien Huang ,  Yen-Hung Wang ,  Yi-Chung Chen ,  Hui-Hsuan Chen ,  Yi-Hsien Ko

IPC: G05G9/047

Abstract: An image identification method is used to eliminate accumulated error of operation of a joystick. The joystick has an optical sensor adapted to analyze a movement of a plurality of identification dots disposed on a stick body. The image identification method includes receiving a series of detection images, setting a first identification dot of the plurality of identification dots as being a reference identification dot, and setting a second identification dot of the plurality of identification dos as being the reference identification dot and cancelling the first identification dot as being the reference identification dot when the first identification dot is near a border of the detection image. A position change of the reference identification dot in the series of detection images is used for identifying a control status of the joystick.

公开(公告)号：US11144084B2

公开(公告)日：2021-10-12

申请号：US16708317

申请日：2019-12-09

Applicant: PixArt Imaging Inc.

Inventor： Wei-Chung Wang ,  Hsin-Chia Chen ,  Hui-Hsuan Chen ,  Chao-Chien Huang ,  Chu-Hung Nien

IPC: G05G9/047 ,  G06F3/038

Abstract: A joystick has a related control method to provide displayed object control function. The joystick includes a body, an image sensor and a processor. The body has a deformable bottom surface whereon a pattern is disposed. The image sensor is disposed under the body and adapted to capture a frame about the pattern. The processor is electrically connected with the image sensor and adapted to generate a displayed object control signal according to pattern variation within the frame.

公开(公告)号：US20210157353A1

公开(公告)日：2021-05-27

申请号：US17069824

申请日：2020-10-13

Applicant: PixArt Imaging Inc.

Inventor： Chao-Chien Huang ,  Yen-Hung Wang ,  Yi-Chung Chen ,  Hui-Hsuan Chen ,  Yi-Hsien Ko

IPC: G05G9/047

Abstract: A joystick includes a casing, a stick body and an optical sensor. The casing has a hole. The stick body is movably disposed on the casing via the hole. The stick body includes a pressing portion, an indication portion and an identification pattern. The indication portion is connected to the pressing portion and inserts into the hole. A sunken structure is formed on a bottom of the indication portion. The identification pattern is disposed on an inner surface of the sunken structure. The optical sensor is disposed inside the casing and faces the sunken structure, and adapted to analyze a movement of the identification pattern to identify a control status of the stick body.

公开(公告)号：US10955969B2

公开(公告)日：2021-03-23

申请号：US16546155

申请日：2019-08-20

Applicant: PIXART IMAGING INC.

Inventor： Chao-Chien Huang ,  Hung-Ching Lai ,  Ting-Yang Chang ,  Yi-Hsien Ko

IPC: G06F3/042 ,  F21V8/00

Abstract: A light-guide assembly and an access control system are provided. The light-guide assembly is used as an interface for touch input. The light-guide assembly includes a light-guide element and a light source disposed on a lateral surface of the light-guide element. The light source emits a first light with a first wavelength. The light-guide element has an upper surface, a lower surface, and an inner layer that is made of a light-transmissive material. The first light enters the light-guide element through the lateral surface and propagates inside the light-guide element for reacting to the touch event occurring on the upper surface. A verification data used in an access control system is formed when the touch event is sensed and identified. A light-activation element of the assembly activates the first light propagating inside the light-guide element and produces a second light that is used to provide a visual effect.

公开(公告)号：US10545528B2

公开(公告)日：2020-01-28

申请号：US16445165

申请日：2019-06-18

Applicant: PixArt Imaging Inc.

Inventor： Wei-Chung Wang ,  Hsin-Chia Chen ,  Hui-Hsuan Chen ,  Chao-Chien Huang ,  Chu-Hung Nien

IPC: G05G9/047 ,  G06F3/038

Abstract: A joystick has a related control method to provide displayed object control function. The joystick includes a body, an image sensor and a processor. The body has a deformable bottom surface whereon a pattern is disposed. The image sensor is disposed under the body and adapted to capture a plurality of frames about the pattern. The processor is electrically connected with the image sensor and adapted to generate a displayed object control signal according to pattern variation within the plurality of frames.

公开(公告)号：US10372155B2

公开(公告)日：2019-08-06

申请号：US15681415

申请日：2017-08-20

Applicant: PixArt Imaging Inc.

Inventor： Wei-Chung Wang ,  Hsin-Chia Chen ,  Hui-Hsuan Chen ,  Chao-Chien Huang ,  Chu-Hung Nien

IPC: G05G9/047 ,  G06F3/038

Abstract: A joystick has a related control method to provide displayed object control function. The joystick includes a body, an image sensor and a processor. The body has a deformable bottom surface whereon a pattern is disposed. The image sensor is disposed under the body and adapted to capture a plurality of frames about the pattern. The processor is electrically connected with the image sensor and adapted to generate a displayed object control signal according to pattern variation within the plurality of frames.

公开(公告)号：US20190056759A1

公开(公告)日：2019-02-21

申请号：US15681415

申请日：2017-08-20

Applicant: PixArt Imaging Inc.

Inventor： Wei-Chung Wang ,  Hsin-Chia Chen ,  Hui-Hsuan Chen ,  Chao-Chien Huang ,  Chu-Hung Nien

IPC: G05G9/047 ,  G06F3/038

CPC classification number: G05G9/047 ,  G05G2009/04759 ,  G06F3/038

Abstract: A joystick has a related control method to provide displayed object control function. The joystick includes a body, an image sensor and a processor. The body has a deformable bottom surface whereon a pattern is disposed. The image sensor is disposed under the body and adapted to capture a plurality of frames about the pattern. The processor is electrically connected with the image sensor and adapted to generate a displayed object control signal according to pattern variation within the plurality of frames.

公开(公告)号：US10114473B2

公开(公告)日：2018-10-30

申请号：US13926337

申请日：2013-06-25

Applicant: PixArt Imaging Inc

Inventor： Chi-Yang Huang ,  Chia-Cheun Liang ,  Chao-Chien Huang ,  Han-Ping Cheng ,  Ming-Tsan Kao

IPC: G06F3/03 ,  G06F3/0354

Abstract: An interactive system includes a display, a processor and a remote controller. The display includes at least one reference beacon for providing light with a predetermined feature. The remote controller includes an image sensor configured to capture an image containing the reference beacon and calculates an aiming coordinate according to an imaging position of the reference beacon in the captured image. The processor calculates a scale ratio of a pixel size of the display with respect to that of the image captured by the image sensor and moves a cursor position according to the scale ratio and the aiming coordinate.