公开(公告)号：US20160007929A1

公开(公告)日：2016-01-14

申请号：US14685782

申请日：2015-04-14

Applicant: PIXART IMAGING INC.

Inventor： CHIH-YUAN CHUANG ,  CHENG-NAN TSAI ,  MING-TSAN KAO ,  YEN-MIN CHANG

IPC: A61B5/00 ,  A61B5/1455

CPC classification number: A61B5/7214 ,  A61B5/02427 ,  A61B5/02433 ,  A61B5/02438 ,  A61B5/14552 ,  A61B5/6803 ,  A61B5/6815 ,  A61B5/725 ,  A61B5/742 ,  A61B2562/0238

Abstract: A biometric detection module including a light source module, a detection region and a control module is provided. The light source module is configured to emit green light, red light and IR light in a time division manner to illuminate a skin surface. The detection region is configured to detect penetration light emitted from the light source module for illuminating the skin surface and passing through body tissues to correspondingly generate a green light signal, a red light signal and an IR light signal. The control module is configured to determine a filtering parameter according to the green light signal to accordingly filter the red light signal and the IR light signal, and calculate a biometric characteristic according to at least one of the green light signal, a filtered red light signal and a filtered IR light signal.

Abstract translation: 提供了包括光源模块，检测区域和控制模块的生物特征检测模块。 光源模块被配置为以时分方式发射绿光，红光和红外光以照射皮肤表面。 检测区域被配置为检测从光源模块发射的穿透光，用于照射皮肤表面并穿过身体组织，以相应地产生绿光信号，红光信号和IR光信号。 所述控制模块被配置为根据所述绿光信号确定滤波参数，以相应地对所述红光信号和所述IR光信号进行滤波，并且根据所述绿光信号，滤波红光信号中的至少一个来计算生物特征 和滤波后的IR光信号。