公开(公告)号：US09232163B2

公开(公告)日：2016-01-05

申请号：US14140824

申请日：2013-12-26

Applicant: Samsung Electronics Co., Ltd.

Inventor： Eric R. Fossum ,  Yibing Michelle Wang ,  Tae-Yon Lee ,  Yoon-Dong Park

IPC: H04N5/341 ,  H04N5/3745 ,  G01S17/89 ,  G01S7/491

CPC classification number: H04N5/3745 ,  G01S7/4914 ,  G01S17/89

Abstract: A depth pixel includes a photo detection unit, an ambient light removal current source, a driving transistor and a select transistor. The photo detection unit is configured to generate a light current based on a received light reflected from a subject, the received light including an ambient light component. The ambient light removal current source configured to generate a compensation current indicating the ambient light component in response to a power supply and at least one compensation control signal. The driving transistor is configured to amplify an effective voltage corresponding to the light current and the compensation current. The select transistor configured to output the amplified effective voltage in response to a selection signal, the amplified effective voltage indicating a depth of the subject.

Abstract translation: 深度像素包括光检测单元，环境光去除电流源，驱动晶体管和选择晶体管。 光检测单元被配置为基于从被摄体反射的接收光产生光电流，所接收的光包括环境光分量。 环境光去除电流源被配置为响应于电源产生指示环境光分量的补偿电流和至少一个补偿控制信号。 驱动晶体管被配置为放大对应于光电流和补偿电流的有效电压。 所述选择晶体管被配置为响应于选择信号输出放大的有效电压，所述放大的有效电压指示所述对象的深度。