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发明授权
US08749276B2 Signal buffer circuit, sensor control board, image scanner, and image forming apparatus 有权
信号缓冲电路，传感器控制板，图像扫描器和图像形成装置

Signal buffer circuit, sensor control board, image scanner, and image forming apparatus
摘要：
A signal buffer circuit includes a buffer to conduct a buffering operation for transmitting a signal to a subsequent unit; a resistor connected between an input side and an output side of the buffer; and a variable impedance device connected in series to the output side of the buffer. The variable impedance device is at low impedance when the buffer is conducting the buffering operation and at high impedance when the buffer is not conducting the buffering operation.
摘要（中）：

信号缓冲电路包括缓冲器，用于进行用于将信号发送到后续单元的缓冲操作; 连接在缓冲器的输入侧和输出侧之间的电阻器; 以及与缓冲器的输出侧串联连接的可变阻抗器件。 当缓冲器进行缓冲操作并且当缓冲器不进行缓冲操作时，可变阻抗器件处于低阻抗。

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