公开(公告)号：US06852966B1

公开(公告)日：2005-02-08

申请号：US10285264

申请日：2002-10-30

申请人： Darin James Douma ,  James Walter Stewart ,  Rudy Hofmeister ,  Anthony W. Ho ,  Lucy G. Hosking

发明人： Darin James Douma ,  James Walter Stewart ,  Rudy Hofmeister ,  Anthony W. Ho ,  Lucy G. Hosking

IPC分类号： H01J40/14 ,  H04B10/158

CPC分类号： H04B10/6911

摘要： The method and apparatus for compensating a photo-detector allows both regulation and monitoring of the photo-detector to be performed with a common digital controller. The controller accepts input of monitored operational parameters including received signal strength and temperature. The controller provides as an output a bias control signal which regulates a positive the positive or negative side bias voltage power supply for the photo-detector. The controller maintains the bias voltage to the photo-detector at levels which optimize the gain and signal-to-noise ratios for the photo-detector thereby facilitating the decoding of the received signal over a broad range of signal strengths and temperatures. The controller includes a corresponding digital signal strength and temperature compensators the outputs of which summed with a summer to provide the bias control signal. The digital signal strength compensator also provides as an output a monitor signal a level of which corresponds to the actual signal strength received by the photo-detector after compensation for the variable gain of the photo-detector resulting from the bias voltage level. A transceiver as well as methods and means for monitoring a photo-detector are also disclosed.

摘要翻译： 用于补偿光电检测器的方法和装置允许用公共数字控制器执行光检测器的调节和监视。 控制器接受监控的操作参数的输入，包括接收的信号强度和温度。 控制器提供偏置控制信号作为输出，该偏置控制信号调节用于光电检测器的正或负侧偏置电压电源。 控制器将光电检测器的偏置电压维持在最优化光检测器的增益和信噪比的水平，从而便于在宽范围的信号强度和温度下对接收信号进行解码。 控制器包括相应的数字信号强度和温度补偿器，其输出与加法器相加以提供偏置控制信号。 数字信号强度补偿器还提供监视信号，其电平对应于由光电检测器在补偿由偏置电压电平产生的光检测器的可变增益之后接收的实际信号强度。 还公开了收发器以及用于监测光检测器的方法和装置。