公开(公告)号：US11669121B2

公开(公告)日：2023-06-06

申请号：US17152730

申请日：2021-01-19

Applicant: PixArt Imaging Inc.

Inventor： Chao-Chien Huang ,  Yi-Chung Chen

IPC: G05G9/047 ,  G06F3/0338

CPC classification number: G05G9/047 ,  G06F3/0338 ,  G05G2009/04748 ,  G05G2009/04759

Abstract: A joystick includes a casing, a stick body, an identification mark and an optical sensor. The casing has a hole. The stick body is movably disposed on the casing. The stick body has a first section and a second section. The first section penetrates through the hole to protrude from the casing, and the second section is inside the casing. The identification mark is disposed on the second section of the stick body. The identification includes a first line group and a second line group crossed to each other. The first line group and the second line group respectively has a plurality of lines with different widths and arranged adjacent to each other. The optical sensor is disposed inside the casing and adapted to acquire an identification image containing the identification mark to determine a gesture of the stick body.

公开(公告)号：US20220229460A1

公开(公告)日：2022-07-21

申请号：US17152730

申请日：2021-01-19

Applicant: PixArt Imaging Inc.

Inventor： Chao-Chien Huang ,  Yi-Chung Chen

IPC: G05G9/047 ,  G06F3/0338

Abstract: A joystick includes a casing, a stick body, an identification mark and an optical sensor. The casing has a hole. The stick body is movably disposed on the casing. The stick body has a first section and a second section. The first section penetrates through the hole to protrude from the casing, and the second section is inside the casing. The identification mark is disposed on the second section of the stick body. The identification includes a first line group and a second line group crossed to each other. The first line group and the second line group respectively has a plurality of lines with different widths and arranged adjacent to each other. The optical sensor is disposed inside the casing and adapted to acquire an identification image containing the identification mark to determine a gesture of the stick body.

公开(公告)号：US11681321B2

公开(公告)日：2023-06-20

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: G06F3/033 ,  G05G9/047

CPC classification number: G05G9/047 ,  G05G2009/04759

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：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：US20210191533A1

公开(公告)日：2021-06-24

申请号：US17191572

申请日：2021-03-03

Applicant: PixArt Imaging Inc.

Inventor： Yi-Chung Chen ,  Chu-Hung Nien

IPC: G06F3/0338 ,  G06F3/03 ,  G05G9/047

Abstract: A joystick includes a first structural component, a second structural component, a light emitter, an optical sensor and a processor. The second structural component is assembled with the first structural component to form a chamber. The light emitter is disposed inside the chamber for illuminating one surface of the second structural component. The optical sensor is disposed inside the chamber for capturing the illuminated surface of the second structural component. The processor is electrically connected to the optical sensor and adapted to analyze an intensity distribution of the illuminated surface for determining if the joystick is obliquely pressed or laterally shifted in a relative manner.

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：US10969878B2

公开(公告)日：2021-04-06

申请号：US16395226

申请日：2019-04-25

Applicant: PixArt Imaging Inc.

Inventor： Yi-Chung Chen ,  Chu-Hung Nien

IPC: G06F3/0338 ,  G06F3/03 ,  G05G9/047

Abstract: A joystick includes a first structural component, a second structural component, a light emitter, an optical sensor and a processor. The second structural component is assembled with the first structural component to form a chamber. The light emitter is disposed inside the chamber for illuminating one surface of the second structural component. The optical sensor is disposed inside the chamber for capturing the illuminated surface of the second structural component. The processor is electrically connected to the optical sensor and adapted to analyze an intensity distribution of the illuminated surface for determining if the joystick is obliquely pressed or laterally shifted in a relative manner.

公开(公告)号：US20190250723A1

公开(公告)日：2019-08-15

申请号：US16395226

申请日：2019-04-25

Applicant: PixArt Imaging Inc.

Inventor： Yi-Chung Chen ,  Chu-Hung Nien

IPC: G06F3/0338 ,  G06F3/03

CPC classification number: G06F3/0338 ,  G06F3/0308

Abstract: A joystick includes a first structural component, a second structural component, a light emitter, an optical sensor and a processor. The second structural component is assembled with the first structural component to form a chamber. The light emitter is disposed inside the chamber for illuminating one surface of the second structural component. The optical sensor is disposed inside the chamber for capturing the illuminated surface of the second structural component. The processor is electrically connected to the optical sensor and adapted to analyze an intensity distribution of the illuminated surface for determining if the joystick is obliquely pressed or laterally shifted in a relative manner.

公开(公告)号：US20240135553A1

公开(公告)日：2024-04-25

申请号：US17970542

申请日：2022-10-19

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.