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    • 18. 发明授权
    • Light detector and light detecting IC therefor
    • 光检测器和光检测IC
    • US06756577B2
    • 2004-06-29
    • US09994372
    • 2001-11-26
    • Hiroaki NakanishiSusumu Mizuhara
    • Hiroaki NakanishiSusumu Mizuhara
    • H01J4014
    • G01D5/34
    • A light detecting IC has a single light receiving element, a first signal processing circuit for processing signals outputted from this light receiving element, a pair of input terminals for receiving signals from outside, a second signal processing circuit for processing signals received from outside through the input terminals, and a switch circuit for selecting one from these two signal processing circuits and outputting results of processing by the selected signal processing circuit. A divided photodiode with two light receiving elements may be connected to the input terminals. Alternatively, another light receiving element which has a larger light receiving surface than the single light receiving element installed on the IC may be connected to one of the pair of input terminals.
    • 光检测IC具有单个光接收元件,用于处理从该光接收元件输出的信号的第一信号处理电路,用于从外部接收信号的一对输入端子,用于处理从外部接收的信号的第二信号处理电路 输入端子和用于从这两个信号处理电路中选择一个信号处理电路并输出所选信号处理电路的处理结果的开关电路。 具有两个光接收元件的分光电二极管可以连接到输入端子。 或者,具有比安装在IC上的单个光接收元件更大的光接收表面的另一个光接收元件可以连接到该对输入端中的一个。