发明申请
US20140078362A1 AD CONVERTING CIRCUIT, PHOTOELECTRIC CONVERTING APPARATUS, IMAGE PICKUP SYSTEM, AND DRIVING METHOD FOR AD CONVERTING CIRCUIT
审中-公开
AD转换电路，光电转换设备，图像拾取系统和AD转换电路的驱动方法
- 专利标题： AD CONVERTING CIRCUIT, PHOTOELECTRIC CONVERTING APPARATUS, IMAGE PICKUP SYSTEM, AND DRIVING METHOD FOR AD CONVERTING CIRCUIT
- 专利标题（中）： AD转换电路，光电转换设备，图像拾取系统和AD转换电路的驱动方法
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申请号： US14082809申请日： 2013-11-18
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公开(公告)号： US20140078362A1公开(公告)日： 2014-03-20
- 发明人: Daisuke Yoshida
- 申请人： CANON KABUSHIKI KAISHA
- 申请人地址： JP Tokyo
- 专利权人： CANON KABUSHIKI KAISHA
- 当前专利权人： CANON KABUSHIKI KAISHA
- 当前专利权人地址： JP Tokyo
- 优先权： JP2011-062463 20110322
- 主分类号： H04N5/335
- IPC分类号： H04N5/335 ; H03M1/36
摘要：
An apparatus for acquiring an i-bit digital code by a first stage AD conversion and a j-bit digital code by a second stage AD conversion includes a comparing unit which compares a reference signal and an analog signal in the first stage AD conversion; and an amplifying unit for outputting an amplified residual signal acquired by amplifying a difference between the analog signal and an analog signal corresponding to the i-bit digital code. The comparing unit compares the amplified residual signal and the reference signal in the second stage AD conversion.
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