公开(公告)号：US20160124520A1

公开(公告)日：2016-05-05

申请号：US14991350

申请日：2016-01-08

Applicant: PIXART IMAGING INC.

Inventor： Ren-Hau GU

IPC: G06F3/03 ,  H04N5/33

CPC classification number: H04N5/2256 ,  G06F1/3259 ,  G06F3/0317 ,  G06F3/0325 ,  H04N5/332 ,  Y02D10/155

Abstract: There is provided an optical navigation device including at least one light source, an image sensor and a processing unit. The light source illuminates a work surface in a first brightness value and a second brightness value. The image sensor receives reflected light from the work surface and outputs a first image frame corresponding to the first brightness value and a second image frame corresponding to the second brightness value. The processing unit calculates a differential image of the first image frame and the second image frame and identifies an operating state according to the differential image.

公开(公告)号：US20150063513A1

公开(公告)日：2015-03-05

申请号：US14534004

申请日：2014-11-05

Applicant: PIXART IMAGING INC.

Inventor： Ren-Hau GU ,  Hsiang-Sheng LIU ,  Yen-Min CHANG

IPC: H04L7/04

CPC classification number: H04L7/0016 ,  G06F1/04 ,  G06F1/12 ,  G06F12/00 ,  H03J7/04 ,  H03J2200/09 ,  H03L7/0807 ,  H04L7/04 ,  H04L7/048

Abstract: An operating method of a human interface device includes the steps of: counting an oversampling number of an oversampling signal and estimating an accumulated bit number of a USB data stream according to the oversampling signal; calculating a difference between the oversampling number and M times of the accumulated bit number when the accumulated bit number is larger than a predetermined value; and calibrating detected information obtained operating with the oversampling signal according to the correction parameter.

Abstract translation: 人机接口装置的操作方法包括以下步骤：对过采样信号的过采样数进行计数，并根据过采样信号估计USB数据流的累积比特数; 当所述累积比特数大于预定值时，计算所述累加比特数的所述过采样数和M次之间的差; 并根据校正参数校准用过采样信号进行操作的检测信息。

公开(公告)号：US20130329962A1

公开(公告)日：2013-12-12

申请号：US13858131

申请日：2013-04-08

Applicant: PIXART IMAGING INC.

Inventor： Ming-Tsan KAO ,  Ren-Hau GU ,  Yu-Hao HUANG

IPC: G06T7/00

CPC classification number: G06T7/004 ,  G06F3/0304 ,  G06F3/0317 ,  G06F3/03543 ,  G06F3/0383 ,  G06T7/246 ,  G06T2207/10016

Abstract: A displacement detection device includes a light source, an image sensor and a processing unit. The light source is configured to illuminate a work surface. The image sensor is configured to capture reflected light from the work surface and to output an image frame. The processing unit is configured to select a window of interest in the image frame having a maximum image feature and to calculate a displacement of the displacement detection device according to the window of interest.

Abstract translation: 位移检测装置包括光源，图像传感器和处理单元。 光源被配置为照亮工作表面。 图像传感器被配置为捕获来自工作表面的反射光并输出图像帧。 处理单元被配置为在具有最大图像特征的图像帧中选择感兴趣的窗口，并且根据感兴趣的窗口来计算位移检测装置的位移。

公开(公告)号：US20130194236A1

公开(公告)日：2013-08-01

申请号：US13671230

申请日：2012-11-07

Applicant: PIXART IMAGING INC.

Inventor： Ren-Hau GU ,  Ming-Tsan KAO ,  Sen-Huang HUANG

IPC: G06F3/042 ,  A61B1/00

CPC classification number: G06F3/0425 ,  A61B1/00172 ,  G06F2203/0338 ,  G06K9/00046 ,  G06K9/00107

Abstract: An optical input device integrates functions of fingerprint recognition, movement detection, and physiological analysis, and has a touch surface for receiving touch input of a finger. When a finger contacts the touch surface, the optical input device captures images from the touch surface, detects movement of the finger to generate a movement signal, extracts a fingerprint feature and a vessel blood changing feature from the images, analyzes and compares the fingerprint feature for identity recognition, and performs calculation according to the vessel blood changing feature to generate a physiological signal.

Abstract translation: 光输入装置集成指纹识别，移动检测和生理分析的功能，并具有用于接收手指的触摸输入的触摸表面。 当手指接触触摸表面时，光学输入装置从触摸表面捕获图像，检测手指的移动以产生运动信号，从图像中提取指纹特征和血管血液变化特征，分析并比较指纹特征 用于身份识别，并且根据血管血液变化特征进行计算以产生生理信号。

公开(公告)号：US20200345234A1

公开(公告)日：2020-11-05

申请号：US16401523

申请日：2019-05-02

Applicant: PixArt Imaging Inc.

Inventor： Ming-Chang LI ,  Ren-Hau GU

IPC: A61B5/00 ,  A61B5/024 ,  A61B5/1455

Abstract: There is provided a physiological detection device including a light source, a light detector, a processing unit and a display device. The light source emits light to illuminate a skin surface. The light detector receives the light from the skin surface to output detected signals. The processing unit confirms an attached state according to the detected signals and controls the display device to show an indication signal or a warning message when the attached state is confirmed not good.

公开(公告)号：US20190261873A1

公开(公告)日：2019-08-29

申请号：US16412702

申请日：2019-05-15

Applicant: PixArt Imaging Inc.

Inventor： Sen-Huang HUANG ,  Ren-Hau GU

IPC: A61B5/024 ,  A61B5/00

Abstract: A physiological detection system including an image sensor, a converting unit, a retrieving unit and a processing unit is provided. The image sensor includes a plurality of pixels respectively configured to output a PPG signal. The converting unit is configured to convert a plurality of PPG signals of a plurality of pixels regions to a plurality of frequency domain signals. The retrieving unit is configured to respectively retrieve a spectral energy of the frequency domain signals corresponding to each of the pixel regions. The processing unit is configured to construct a 3D energy distribution according to the spectral energies.

公开(公告)号：US20180092604A1

公开(公告)日：2018-04-05

申请号：US15819592

申请日：2017-11-21

Applicant: PixArt Imaging Inc.

Inventor： Ren-Hau GU ,  Yen-Min CHANG ,  Ming-Chang LI ,  Chih-Hsin LIN

IPC: A61B5/00 ,  A61B5/024

CPC classification number: A61B5/721 ,  A61B5/02416 ,  A61B5/02438 ,  A61B5/725 ,  A61B5/7257 ,  A61B5/7275 ,  A61B2560/0223 ,  A61B2562/0219 ,  A61B2562/028 ,  G16H40/63 ,  G16H50/30

Abstract: There is provided a system architecture including a PPG hardware module and a MEMS hardware module. The PPG hardware module processes PPG raw data, which is generally composed of analog signals or digital signals. The PPG hardware module filters the raw data for later digital calculation to, for example, find out frequency signals with higher peak values. The PPG hardware module then outputs the selected frequency signals to an MCU for heart rate calculation. The MEMS hardware module receives MEMS raw data from a motion detector made of MEMS elements. The MEMS raw data represents motion status of a user that could possibly affect the heart rate determination result. The MEMS hardware module filters the raw data for later digital calculation to find out frequency signals with higher peak values caused by motion.

公开(公告)号：US20170196469A1

公开(公告)日：2017-07-13

申请号：US15350619

申请日：2016-11-14

Applicant: PIXART IMAGING INC.

Inventor： Wei-Ru HAN ,  Ren-Hau GU ,  Chih-Yuan CHUANG

IPC: A61B5/021 ,  A61B5/08 ,  A61B5/00

CPC classification number: A61B5/02125 ,  A61B5/0082 ,  A61B5/02416 ,  A61B5/0816 ,  A61B5/6831 ,  A61B5/7239 ,  A61B5/7257

Abstract: A blood pressure detection method includes the steps of: acquiring a PPG signal from a skin surface using a light sensing element; calculating a blood pressure corresponding to each pulse duration according to at least one pressure estimation model and a time difference between two feature points within one pulse duration; calculating a breathing period; averaging a plurality of blood pressures within the breathing period to generate an average blood pressure; and showing the average blood pressure with a display device.

公开(公告)号：US20140160024A1

公开(公告)日：2014-06-12

申请号：US13873700

申请日：2013-04-30

Applicant: PIXART IMAGING INC.

Inventor： Yu-Hao HUANG ,  Ming-Tsan KAO ,  Ren-Hau GU ,  Hsin-Chia CHEN ,  Yung-Chang LIN ,  Tsung-Fa WANG

IPC: G06F3/0354

CPC classification number: G06F3/038 ,  G06F3/0317

Abstract: An optical navigation apparatus and an optical navigation method are provided. The optical navigation apparatus includes a light source unit, an image sensing unit, and a processing unit, wherein the processing unit is electrically connected to the light source unit and the image sensing unit. The light source unit generates a beam of light. The image sensing unit captures a plurality of images within a time interval. The processing unit determines that the beam of light is projected onto a touch object according to the images, calculates a piece of displacement information related to the touch object according to the images, generates a comparison result by comparing the piece of displacement information with a threshold, and sets a displacement resolution of the optical navigation apparatus according to the comparison result.

Abstract translation: 提供了一种光学导航装置和光学导航方法。 光学导航装置包括光源单元，图像感测单元和处理单元，其中处理单元电连接到光源单元和图像感测单元。 光源单元产生光束。 图像感测单元在时间间隔内捕获多个图像。 处理单元根据图像确定光束被投影到触摸对象上，根据图像计算与触摸对象相关的位移信息，通过将该位移信息与阈值进行比较来生成比较结果 ，并根据比较结果设定光学导航装置的位移分辨率。

公开(公告)号：US20130215257A1

公开(公告)日：2013-08-22

申请号：US13684864

申请日：2012-11-26

Applicant: PixArt Imaging Inc.

Inventor： Yu-Hao HUANG ,  Ren-Hau GU ,  Hsin-Chia CHEN ,  Ming-Tsan KAO

IPC: H04N5/225

CPC classification number: H04N5/2256 ,  G06F1/3259 ,  G06F3/0317 ,  G06F3/0325 ,  H04N5/332 ,  Y02D10/155

Abstract: There is provided an optical navigation device including at least one light source, an image sensor and a processing unit. The light source illuminates a work surface in a first brightness value and a second brightness value. The image sensor receives reflected light from the work surface and outputs a first image frame corresponding to the first brightness value and a second image frame corresponding to the second brightness value. The processing unit calculates a differential image of the first image frame and the second image frame and identifies an operating state according to the differential image.

Abstract translation: 提供了一种包括至少一个光源，图像传感器和处理单元的光学导航装置。 光源以第一亮度值和第二亮度值照亮工作表面。 图像传感器接收来自工作表面的反射光并输出对应于第一亮度值的第一图像帧和对应于第二亮度值的第二图像帧。 处理单元计算第一图像帧和第二图像帧的差分图像，并根据差分图像识别操作状态。