公开(公告)号：US20100294917A1

公开(公告)日：2010-11-25

申请号：US12740840

申请日：2008-10-30

申请人： Stephen Morgan ,  Barrie Hayes-Gill ,  John Crowe ,  Malcolm Woolfson

发明人： Stephen Morgan ,  Barrie Hayes-Gill ,  John Crowe ,  Malcolm Woolfson

IPC分类号： H01L31/102 ,  H01L31/09 ,  H03F3/08

CPC分类号： G01P5/26 ,  A61B5/0261 ,  A61B5/7242 ,  G01F1/661 ,  G01F1/663 ,  G01P3/366 ,  G01P5/001 ,  G01S17/58

摘要： For imaging, an electromagnetic radiation sensor is used to produce an output when illuminated by a modulated laser light. In use, the output is determined by a laser Doppler signal illuminating the sensor. Various examples are described for achieving integration of on-chip processing onto the substrate providing the sensor. In one example, the output of the sensor is a logarithmic function of the illuminating laser Doppler signal. In another example, the output of the sensor is normalized. In another example, an amplifier arrangement is provided to amplify the output of the sensor, the amplifier gain being lower at DC than at the frequency range of the laser Doppler signal. In another example, a filter is integrated into the semiconductor device. In another example, a bandpass filter and frequency weighted filter are provided, and their outputs are processed to average values over time.

摘要翻译： 对于成像，使用电磁辐射传感器在被调制的激光照射时产生输出。 在使用中，输出由照射传感器的激光多普勒信号决定。 描述了用于实现将片上处理集成到提供传感器的基板上的各种示例。 在一个示例中，传感器的输出是照明激光多普勒信号的对数函数。 在另一示例中，传感器的输出被归一化。 在另一示例中，提供放大器布置以放大传感器的输出，放大器增益在DC处比在激光多普勒信号的频率范围处更低。 在另一示例中，将滤波器集成到半导体器件中。 在另一示例中，提供带通滤波器和频率加权滤波器，并且它们的输出被处理成随时间的平均值。