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1.发明申请DIRECT CURRENT (DC) CORRECTION CIRCUIT FOR A TIME OF FLIGHT (TOF) PHOTODIODE FRONT END 有权飞行时间（TOF）光电前端的直流电流（直流）校正电路公开(公告)号：US20110181254A1
公开(公告)日：2011-07-28
申请号：US13013146
申请日：2011-01-25
IPC分类号： G05F1/10
CPC分类号： G01N21/55 , G01J1/46 , G01J9/00 , G01S17/08 , H01L31/101
摘要： A system and method that compensates for the effects of ambient light in a time of flight (TOF) sensor front end is provided. Moreover, a direct current (DC) correction loop is utilized at the front end, which removes a DC component from a current generated by the TOF sensor and accordingly prevents saturating the front end. The DC correction loop attenuates the DC component without adding significant thermal noise at a modulation frequency and provides a corrected signal to the front end circuitry. The corrected signal is processed and utilized to detect a position of an object within the optical field of the sensor.
摘要翻译： 提供了补偿飞行时间（TOF）传感器前端环境光影响的系统和方法。 此外，在前端使用直流（DC）校正回路，其从由TOF传感器产生的电流中去除DC分量，并因此防止前端饱和。 直流校正环路衰减直流分量，而不会在调制频率下增加明显的热噪声，并向前端电路提供校正信号。 经校正的信号被处理并用于检测物体在传感器的光场内的位置。
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2.发明申请公开(公告)号：US20110181892A1
公开(公告)日：2011-07-28
申请号：US13013173
申请日：2011-01-25
CPC分类号： G01N21/55 , G01J1/46 , G01J9/00 , G01S17/08 , H01L31/101
摘要： A system and method for automatically calibrating a Time-of-Flight (TOF) transceiver system for proximity/motion detection, is provided. Moreover, the system comprises a component that senses a signal (e.g., current or voltage) at an light emitting diode (LED), an attenuator, a signal injector at a sensor and a switching circuit that toggles between a normal mode (e.g., when signal from the sensor is input to the sensor front end) and a calibration mode (e.g., when signal from the attenuator is input to the sensor front end). During the calibration mode, the sensor front end identifies the phase delay error within the signal path, including board and/or package parasitic, and accounts for the phase delay error during proximity/motion detection in the normal mode.
摘要翻译： 提供了一种用于自动校准飞行时间（TOF）收发器系统进行接近/运动检测的系统和方法。 此外，该系统包括感测在发光二极管（LED），衰减器，传感器处的信号注入器和切换电路之间的信号（例如，电流或电压）的组件，其在正常模式（例如， 来自传感器的信号被输入到传感器前端）和校准模式（例如，当来自衰减器的信号被输入到传感器前端时）。 在校准模式期间，传感器前端识别信号路径中的相位延迟误差，包括板和/或封装寄生，并考虑到正常模式下接近/运动检测期间的相位延迟误差。
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公开(公告)号：US08274037B2
公开(公告)日：2012-09-25
申请号：US13013173
申请日：2011-01-25
CPC分类号： G01N21/55 , G01J1/46 , G01J9/00 , G01S17/08 , H01L31/101
摘要： A system and method for automatically calibrating a Time-of-Flight (TOF) transceiver system for proximity/motion detection, is provided. Moreover, the system comprises a component that senses a signal (e.g., current or voltage) at an light emitting diode (LED), an attenuator, a signal injector at a sensor and a switching circuit that toggles between a normal mode (e.g., when signal from the sensor is input to the sensor front end) and a calibration mode (e.g., when signal from the attenuator is input to the sensor front end). During the calibration mode, the sensor front end identifies the phase delay error within the signal path, including board and/or package parasitic, and accounts for the phase delay error during proximity/motion detection in the normal mode.
摘要翻译： 提供了一种用于自动校准飞行时间（TOF）收发器系统进行接近/运动检测的系统和方法。 此外，该系统包括感测在发光二极管（LED），衰减器，传感器处的信号注入器和切换电路之间的信号（例如，电流或电压）的组件，其在正常模式（例如， 来自传感器的信号被输入到传感器前端）和校准模式（例如，当来自衰减器的信号被输入到传感器前端时）。 在校准模式期间，传感器前端识别信号路径中的相位延迟误差，包括板和/或封装寄生，并考虑到正常模式下接近/运动检测期间的相位延迟误差。
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4.发明申请公开(公告)号：US20110180693A1
公开(公告)日：2011-07-28
申请号：US13013199
申请日：2011-01-25
IPC分类号： H01J40/14
CPC分类号： G01N21/55 , G01J1/46 , G01J9/00 , G01S17/08 , H01L31/101
摘要： An area effective system and method for improving power supply rejection ratio (PSRR) in an optical sensor front end, is provided. Moreover, low pass filter (LPF) that enables the reference voltage in the front end of the optical sensor, to be referred to the same substrate as that employed by the sensor. In one example, the LPF includes a capacitor, implemented using a Deep-N-Well (DNW) depletion capacitor, which is utilized to connect the reference voltage to the same substrate. Additionally, the DNW allows an area efficient realization of the LPF. The system and method disclosed herein improves the PSRR by a factor of around 40 dB for 5 MHz modulation.
摘要翻译： 提供了一种用于改善光学传感器前端中的电源抑制比（PSRR）的区域有效系统和方法。 此外，使得能够将光学传感器前端的参考电压的低通滤波器（LPF）称为与传感器采用的相同的衬底。 在一个示例中，LPF包括使用深N阱（DNW）耗尽电容器实现的电容器，其用于将参考电压连接到相同的衬底。 此外，DNW允许区域高效地实现LPF。 本文所公开的系统和方法将对于5MHz调制的PSRR提高约40dB的系数。
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5.发明授权Direct current (DC) correction circuit for a time of flight (TOF) photodiode front end 有权用于飞行时间（TOF）光电二极管前端的直流（DC）校正电路公开(公告)号：US08530819B2
公开(公告)日：2013-09-10
申请号：US13013146
申请日：2011-01-25
IPC分类号： G05F1/10
CPC分类号： G01N21/55 , G01J1/46 , G01J9/00 , G01S17/08 , H01L31/101
摘要： A system and method that compensates for the effects of ambient light in a time of flight (TOF) sensor front end is provided. Moreover, a direct current (DC) correction loop is utilized at the front end, which removes a DC component from a current generated by the TOF sensor and accordingly prevents saturating the front end. The DC correction loop attenuates the DC component without adding significant thermal noise at a modulation frequency and provides a corrected signal to the front end circuitry. The corrected signal is processed and utilized to detect a position of an object within the optical field of the sensor.
摘要翻译： 提供了补偿飞行时间（TOF）传感器前端环境光影响的系统和方法。 此外，在前端使用直流（DC）校正回路，其从由TOF传感器产生的电流中去除DC分量，并因此防止前端饱和。 直流校正环路衰减直流分量，而不会在调制频率下增加明显的热噪声，并向前端电路提供校正信号。 经校正的信号被处理并用于检测物体在传感器的光场内的位置。
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6.发明申请公开(公告)号：US20110249134A1
公开(公告)日：2011-10-13
申请号：US12938481
申请日：2010-11-03
IPC分类号： H04N5/228 , H01L31/18 , G05F1/10 , H01L31/0224
CPC分类号： H01L31/03529 , G01S7/4816 , H01L31/11 , Y02E10/50
摘要： An imaging system, semiconductor device, and method of manufacture of a photo-detector device are disclosed. For example, an imaging system is disclosed, which includes a photo-detector unit including a plurality of conductive trenches formed within the photo-detector unit, and a plurality of electrical contacts, each electrical contact connected to a respective conductive trench. The imaging system further includes a light data processor unit coupled to an output of the photo-detector unit to convert an analog signal received from the photo-detector unit to a digital signal, a processing unit coupled to an output of the light data processor unit to generate a control signal in response to the digital signal, and a display unit coupled to an output of the processing unit to vary the intensity of an image displayed in response to the control signal.
摘要翻译： 公开了一种成像系统，半导体器件和光电检测器件的制造方法。 例如，公开了一种成像系统，其包括光检测器单元，其包括形成在光检测器单元内的多个导电沟槽和多个电触点，每个电触点连接到相应的导电沟槽。 成像系统还包括光数据处理器单元，其耦合到光检测器单元的输出，以将从光检测器单元接收的模拟信号转换为数字信号;处理单元，耦合到光数据处理器单元的输出 以响应于数字信号产生控制信号，以及耦合到处理单元的输出的显示单元，以响应于控制信号改变显示的图像的强度。
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