发明申请
US20120008173A1 ANALOG SIGNAL BUFFER AND IMAGE READING DEVICE USING THE ANALOG SIGNAL BUFFER
有权
模拟信号缓冲器和使用模拟信号缓冲器的图像读取器件
- 专利标题： ANALOG SIGNAL BUFFER AND IMAGE READING DEVICE USING THE ANALOG SIGNAL BUFFER
- 专利标题（中）： 模拟信号缓冲器和使用模拟信号缓冲器的图像读取器件
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申请号： US13150563申请日： 2011-06-01
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公开(公告)号： US20120008173A1公开(公告)日： 2012-01-12
- 发明人: Yoshio KONNO , Masamoto Nakazawa
- 申请人： Yoshio KONNO , Masamoto Nakazawa
- 优先权： JP2010-153556 20100706
- 主分类号： H04N1/32
- IPC分类号： H04N1/32
摘要：
The analog signal buffer is connected with a photoelectric converter to convert an optical image to an analog signal and an analog signal processing circuit to convert the analog signal to a digital signal, and transmits the analog signal to the analog signal processing circuit. The analog signal buffer includes a first buffer having a NPN transistor; and a second buffer having a PNP transistor. The first buffer includes a circuit to block a reverse current caused in the analog signal buffer by dropping of a voltage output from the photoelectric converter.
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