公开(公告)号：US20230045075A1

公开(公告)日：2023-02-09

申请号：US17579529

申请日：2022-01-19

Applicant: PixArt Imaging Inc.

Inventor： Ming Shun Manson Fei ,  Sen-Huang Huang ,  Chi-Chieh Liao

IPC: G06T7/70 ,  G06T7/521

Abstract: An object position determining system comprising: at least one light source, configured to emit light; at least one optical sensor, configured to sense optical data generated based on reflected light of the light; and a processing circuit, configured to compute distance information between the optical sensor and an object which generates the reflected light. The processing circuit further determines a position of the object according to the distance information.

公开(公告)号：US11437994B2

公开(公告)日：2022-09-06

申请号：US17134940

申请日：2020-12-28

Applicant: PIXART IMAGING INC.

Inventor： Che-Chia Hsu ,  Yu-Han Chen ,  Chi-Chieh Liao

IPC: H03K17/96 ,  G06F3/044 ,  G06F3/02

Abstract: A touch sensor and a keyboard using the same are provided. The touch sensor includes a plurality of main sensor structures and a plurality of resilient structures. Any two adjacent ones of the main sensor structures have a gap therebetween. Each of the resilient structures is connected between two adjacent ones of the main sensor structures, and each of the resilient structures has a cross-sectional width that is less than a width of the gap.

公开(公告)号：US11048907B2

公开(公告)日：2021-06-29

申请号：US15712161

申请日：2017-09-22

Applicant: PixArt Imaging Inc.

Inventor： Chi-Chieh Liao

IPC: G06K9/00

Abstract: An object tracking method applied to an object tracking system comprising an object sensing device, an object identifying device, and a control interface comprising an object sensing region and an object identifying region. The object tracking method comprises: (a) generating object sensing values via the object sensing device; (b) calculating a location for the object on the object sensing region according to the object sensing values; and (c) adjusting the location for the object if the object sensing device or the object identifying device determines at least part of the object is on the object identifying region. The step (c) can adjust the location for the object if the object will enter the object identifying region. By this way, the dead zone issue for the control interface can be avoided.

公开(公告)号：US20200149988A1

公开(公告)日：2020-05-14

申请号：US16746967

申请日：2020-01-20

Applicant: PixArt Imaging Inc.

Inventor： Yu-Han Chen ,  Chih-Wei Huang ,  Chi-Chieh Liao ,  Wei-Chung Wang

IPC: G01L25/00 ,  G06F3/044 ,  G06F3/041 ,  G01L1/14

Abstract: A pressure measuring method, applied to a pressure measuring apparatus, comprising: measuring a first pressure sensing value when the pressure measuring apparatus operates at a first scan frequency and receives a first pressure; and measuring a second pressure sensing value when the pressure measuring apparatus operates a second scan frequency and receives the first pressure. The first pressure sensing value and the second pressure sensing value are different, and a change between the first pressure sensing value and the second pressure sensing value is according to a change between the first scan frequency and the second scan frequency. The first scan frequency and the second scan frequency are different. The pressure measuring method can further comprise a calibrating mechanism to compensate the sensed pressure. By this way, the pressure sensing value can be calibrated, to solve the issue that the pressure sensing values are affected by scan frequencies.

公开(公告)号：US10437365B2

公开(公告)日：2019-10-08

申请号：US15730698

申请日：2017-10-11

Applicant: PixArt Imaging Inc.

Inventor： Chi-Chieh Liao ,  Che-Chia Hsu ,  Yu-Han Chen

IPC: G06F3/041 ,  G06F3/044 ,  H03M1/12

Abstract: A driver integrated circuit (IC) includes: a built-in capacitor, a reading circuit, an analog-to-digital converter (ADC) and a coupling circuit, wherein the reading circuit receives a sensing signal from a touch panel and outputs an analog sensing data; the ADC is coupled to the reading circuit, and is used to receive and convert the analog sensing data to a digital sensing data; and the coupling circuit is coupled to the reading circuit, and is used to selectively couple the built-in capacitor to the touch panel when the driver IC operates in a touch sensing mode.

公开(公告)号：US20190107907A1

公开(公告)日：2019-04-11

申请号：US15730698

申请日：2017-10-11

Applicant: PixArt Imaging Inc.

Inventor： Chi-Chieh Liao ,  Che-Chia Hsu ,  Yu-Han Chen

IPC: G06F3/041 ,  G06F3/044 ,  H03M1/12

CPC classification number: G06F3/0412 ,  G06F3/0416 ,  G06F3/04166 ,  G06F3/044 ,  G06F3/0446 ,  H03M1/12

Abstract: A driver integrated circuit (IC) includes: a built-in capacitor, a reading circuit, an analog-to-digital converter (ADC) and a coupling circuit, wherein the reading circuit receives a sensing signal from a touch panel and outputs an analog sensing data; the ADC is coupled to the reading circuit, and is used to receive and convert the analog sensing data to a digital sensing data; and the coupling circuit is coupled to the reading circuit, and is used to selectively couple the built-in capacitor to the touch panel when the driver IC operates in a touch sensing mode.

公开(公告)号：US10156939B2

公开(公告)日：2018-12-18

申请号：US15297097

申请日：2016-10-18

Applicant: PixArt Imaging Inc.

Inventor： Hung-Ching Lai ,  Hui-Hsuan Chen ,  Chi-Chieh Liao

IPC: G06F3/042 ,  G02B5/04 ,  G06F3/041

Abstract: A light source assembly for an optical touch device includes a linear light source and a plurality of prism pillars. The linear light source includes a lighting surface having a first side along a first direction and a second side along a second direction for emitting light. The first side is longer than the second side, and the first direction intersects the second direction. The prism pillars are disposed adjacent to the lighting surface and arranged along the first direction. Each of the prism pillars includes a first surface adjacent to the lighting surface and two reflection surfaces tilted toward each other for reflecting the light. The first surface is connected to the two reflection surfaces and parallel to the lighting surface. Each of the first surfaces is for receiving the emitted light, and each of the first surfaces and one of the reflection surfaces form a first angle.

公开(公告)号：US10013071B2

公开(公告)日：2018-07-03

申请号：US15340847

申请日：2016-11-01

Applicant: PIXART IMAGING INC.

Inventor： Yu-Han Chen ,  Chi-Chieh Liao ,  Chia-Yi Lee

IPC: G06F3/01 ,  G06F3/041 ,  G06F3/044

CPC classification number: G06F3/017 ,  G06F3/0416 ,  G06F3/044 ,  G06F3/04883 ,  G06F2203/04101

Abstract: Disclosed is a three-dimensional gesture sensing method. The three-dimensional gesture sensing method comprises the following steps. Step A: driving at least one first conductive line of conductive lines in the touch sensing device as a first working sensing line, and driving at least one second conductive line of the conductive lines in the touch sensing device as a second working sensing line, such that a sensing area is formed between the first working sensing line and the second working sensing line. Step B: detecting a conductor according to the sensing area. Step C: dynamically adjusting at least the area, the position or the amount of the sensing area according to the conductor to implement a three-dimensional gesture sensing.

公开(公告)号：US20170292888A1

公开(公告)日：2017-10-12

申请号：US15482815

申请日：2017-04-09

Applicant: PixArt Imaging Inc.

Inventor： Yu-Han Chen ,  Chih-Wei Huang ,  Chi-Chieh Liao ,  Wei-Chung Wang

IPC: G01L9/12 ,  G01L27/00

CPC classification number: G01L25/00 ,  G01L1/142 ,  G06F3/0418 ,  G06F3/044

Abstract: A pressure measuring method, applied to a pressure measuring apparatus, comprising: measuring a first pressure sensing value of the pressure measuring apparatus, which corresponds to a first pressure in a test mode; measuring a second pressure sensing value of the pressure measuring apparatus, which corresponds to a second pressure in the test mode; generating a first corresponding function according to the first pressure, the second pressure, the first pressure sensing value and the second pressure sensing value; sensing a third pressure sensing value via the pressure measuring apparatus in a normal mode; and generating a third pressure according to the third pressure sensing value via the first corresponding function; wherein the pressure measuring apparatus operates at a first scan frequency. By this way, the pressure sensing value can be calibrated, to solve the issue that the pressure sensing values are affected by scan frequencies.

公开(公告)号：US09552118B2

公开(公告)日：2017-01-24

申请号：US14591150

申请日：2015-01-07

Applicant: PIXART IMAGING INC.

Inventor： Chi-Chieh Liao ,  Yi-Hsien Ko ,  Chih-Hsiung Shih

IPC: G06F3/044 ,  G06F3/0338

CPC classification number: G06F3/044 ,  G06F3/0338 ,  G06F3/0416 ,  G06F2203/04102 ,  G06F2203/04103 ,  G06F2203/04105 ,  Y10T29/49155

Abstract: A capacitive finger navigation module including a pressure detection mode and a finger movement detection mode is provided. In the pressure detection mode, a finger press is detected to generate a continuous cursor movement signal. In the finger movement detection mode, a finger movement is detected to generate a single cursor movement signal.

Abstract translation: 提供了包括压力检测模式和手指移动检测模式的电容手指导航模块。 在压力检测模式中，检测到手指按压以产生连续的光标移动信号。 在手指移动检测模式中，检测到手指移动以产生单个光标移动信号。