公开(公告)号：US09299731B1

公开(公告)日：2016-03-29

申请号：US14042700

申请日：2013-09-30

Applicant: Google Inc.

Inventor： Samuel William Lenius ,  Pierre-yves Droz

IPC: H01J40/14 ,  G06M7/00 ,  G01C21/02 ,  H01L27/144 ,  G01S17/06

CPC classification number: G01S17/06 ,  B60R2300/301 ,  G01S7/4863 ,  G01S17/89

Abstract: Example systems and methods include a receiving circuit and selectable photodiode circuits. Each selectable photodiode circuit includes (i) a photodiode having a photodiode anode and a photodiode cathode, where the photodiode is configured to generate a selectable input, (ii) a bias voltage source connected to the photodiode cathode, (iii) a connecting resistor connected to the photodiode anode, (iv) a switchable power supply connected to the connecting resistor, where the switchable power supply is configured to operate in a high state and a low state, and (v) a PIN diode having a PIN anode and a PIN cathode, where the PIN cathode is connected to the photodiode anode and the connecting resistor, and the PIN anode is connected to the receiving circuit. The selectable photodiode circuit is configured to provide the selectable input to the receiving circuit only when the switchable power supply operates in the low state.

Abstract translation: 示例系统和方法包括接收电路和可选择的光电二极管电路。 每个可选择的光电二极管电路包括（i）具有光电二极管阳极和光电二极管阴极的光电二极管，其中光电二极管被配置为产生可选择的输入，（ii）连接到光电二极管阴极的偏置电压源，（iii）连接的电阻器 （iv）连接到连接电阻器的可切换电源，其中可切换电源被配置为在高状态和低状态下工作，以及（v）具有PIN阳极和PIN的PIN二极管 阴极，其中PIN阴极连接到光电二极管阳极和连接电阻器，并且PIN阳极连接到接收电路。 可选择的光电二极管电路被配置为仅在可切换电源处于低电平状态时才将可选择的输入提供给接收电路。