公开(公告)号：US09500477B2

公开(公告)日：2016-11-22

申请号：US13893812

申请日：2013-05-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Han-Soo Lee ,  Hae-Kyung Kong ,  Kyung-IL Kim ,  Min-Seok Oh ,  Tae-Chan Kim ,  Moo-Sup Lim

IPC: G01C3/08

CPC classification number: G01S17/36 ,  G01C3/08

Abstract: To measure the distance to points on an object by radiating a periodic amplitude-modulated optical signal to the object and detecting the phase difference between the radiated optical signal and a reflected optical signal from the object, a first photo-detection control signal is generated to control the radiation of the optical signal. A mask signal is generated such that the mask signal is activated at least during a shuttering duration for resetting the voltage level at a sensing node (associated with an operation of a previous frame). A second photo-detection control signal is generated based on the first photo-detection signal and the mask signal such that the second photo-detection signal is deactivated or masked at least during the shuttering duration.

Abstract translation: 为了通过向对象辐射周期性幅度调制的光信号并检测辐射光信号与来自对象的反射光信号之间的相位差来测量物体上与点的距离，产生第一光检测控制信号 控制光信号的辐射。 产生掩模信号，使得至少在用于复位感测节点处的电压电平（与先前帧的操作相关联）的快门持续时间期间激活屏蔽信号。 基于第一光检测信号和掩模信号产生第二光检测控制信号，使得至少在快门持续时间期间第二光检测信号被去激活或屏蔽。