公开(公告)号：US20170139536A1

公开(公告)日：2017-05-18

申请号：US14941256

申请日：2015-11-13

Applicant: PIXART IMAGING INC.

Inventor： Hsin-Chia CHEN ,  Kenneth CRANDALL ,  Raman SAHGAL

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/0416 ,  G06F3/044

Abstract: A capacitive touch system including a capacitive touch panel, a storage element and a control chip is provided. The storage element is configured to store a lookup table which contains a plurality of mixing signals. The control chip concurrently drives the capacitive touch panel with a plurality of frequency division multiplexed drive signals to generate a plurality of detection signals, and determine a plurality pairs of mixing signals according to the lookup table for respectively modulating the detection signals to generate a plurality pairs of modulated detection signals, wherein the pair of mixing signals corresponding to different drive signals are different from one another.

公开(公告)号：US20160345847A1

公开(公告)日：2016-12-01

申请号：US15231690

申请日：2016-08-08

Applicant: PIXART IMAGING INC.

Inventor： Ren-Hau GU ,  Hsin-Chia CHEN ,  Raman SAHGAL ,  Jung-Tai LIN

IPC: A61B5/024 ,  G06F3/03 ,  G06F3/0354 ,  A61B5/11 ,  G01C11/02

CPC classification number: A61B5/02427 ,  A61B5/02416 ,  A61B5/02438 ,  A61B5/1118 ,  G01C11/02 ,  G06F1/3259 ,  G06F3/011 ,  G06F3/014 ,  G06F3/015 ,  G06F3/0317 ,  G06F3/03543 ,  G06F3/03547 ,  G06F3/0383 ,  G06F2203/0338 ,  Y02D10/155

Abstract: A physiological detection device including a light source, an image sensor and a processor is provided. The light source illuminates a skin surface using a burst mode. The image sensor receives ejected light from skin tissues under the skin surface at a sampling frequency to successively generate image frames. The processor controls the light source and the image sensor, and calculates a physiological characteristic according to the image frames captured when the light source is illuminating light. The physiological detection device reduces the total power consumption by adopting the burst mode.

Abstract translation: 提供了包括光源，图像传感器和处理器的生理检测装置。 光源使用突发模式照亮皮肤表面。 图像传感器以采样频率从皮肤表面下的皮肤组织接收弹射光，以连续生成图像帧。 处理器控制光源和图像传感器，并且根据当光源照亮光时捕获的图像帧来计算生理特性。 生理检测装置采用突发模式来降低总功耗。