公开(公告)号：US20120312956A1

公开(公告)日：2012-12-13

申请号：US13494000

申请日：2012-06-11

Applicant: Tom Chang ,  Kao Pin Wu ,  Chih Jen Fang ,  Cheng Te Chan ,  Cheng Ta Chuang ,  Fang Yu Liu

Inventor： Tom Chang ,  Kao Pin Wu ,  Chih Jen Fang ,  Cheng Te Chan ,  Cheng Ta Chuang ,  Fang Yu Liu

IPC: H01L31/00

CPC classification number: G06F3/017 ,  G06F3/0421 ,  G06K9/00335 ,  G06K9/209

Abstract: A light sensor system includes at least one light emitter, a light sensor unit and a processing unit. The light sensor unit is arranged to receive reflected light from an object in accordance with a time sequence in which the at least one light emitter is activated, and accordingly output a plurality of reflected signals. The processing unit is arranged to receive the reflected signals, identify a signal function of time by referring to occurrence sequence of local peak levels of the reflected signals, and determine motion of the object according to the signal function of time. Another light sensor system is proposed. The major difference between the two light sensor systems is that the processing unit of the another light sensor system is arranged to identify the signal function of time by comparing a predetermined threshold with signal levels of the reflected signals.

Abstract translation: 光传感器系统包括至少一个光发射器，光传感器单元和处理单元。 光传感器单元被布置成根据至少一个光发射器被激活的时间顺序接收来自物体的反射光，并因此输出多个反射信号。 处理单元被布置为接收反射信号，通过参考反射信号的局部峰值电平的出现顺序来识别时间的信号功能，并且根据时间的信号函数来确定对象的运动。 提出了另一种光传感器系统。 两个光传感器系统的主要区别在于，另一光传感器系统的处理单元被布置成通过将预定阈值与反射信号的信号电平进行比较来识别时间的信号功能。