公开(公告)号：US20080106748A1

公开(公告)日：2008-05-08

申请号：US11932168

申请日：2007-10-31

申请人： Hajime TSUKAHARA ,  Tohru Kanno

发明人： Hajime TSUKAHARA ,  Tohru Kanno

IPC分类号： H04N1/40 ,  G06F3/12

CPC分类号： H04N1/40056

摘要： An image reading apparatus and an image forming apparatus including the image reading apparatus. The image reading apparatus includes a photoelectric converter to convert incident light into an analog image signal, a drive unit to drive the photoelectric converter by a frequency modulated clock signal, an overlapping circuit to overlap an anti-phase analog signal to the analog image signal fluctuating according to the frequency modulated clock signal with a same amount of fluctuation as that of the analog image signal, and an analog digital converter to convert the overlapped analog image signal into a digital output.

摘要翻译： 一种图像读取装置和包括图像读取装置的图像形成装置。 图像读取装置包括将入射光转换为模拟图像信号的光电转换器，通过调频时钟信号驱动光电变换器的驱动单元，将反相模拟信号与反相模拟信号重叠至模拟图像信号波动的重叠电路 根据与模拟图像信号相同量的波动的调频时钟信号，以及将重叠的模拟图像信号转换为数字输出的模拟数字转换器。

公开(公告)号：US20200252513A1

公开(公告)日：2020-08-06

申请号：US16776521

申请日：2020-01-30

申请人： Yuuki NAKADA ,  Hajime TSUKAHARA ,  Hiroki SHIRADO ,  Ayumu HASHIMOTO ,  Tomohiko ONO ,  Tatsuya OZAKI ,  Hiroshi KUBO ,  Yoshiaki NAGAO ,  Kimiharu YANAGISAWA ,  Masahiro ITOH

发明人： Yuuki NAKADA ,  Hajime TSUKAHARA ,  Hiroki SHIRADO ,  Ayumu HASHIMOTO ,  Tomohiko ONO ,  Tatsuya OZAKI ,  Hiroshi KUBO ,  Yoshiaki NAGAO ,  Kimiharu YANAGISAWA ,  Masahiro ITOH

IPC分类号： H04N1/00

摘要： An inclination detecting device includes processing circuitry. The processing circuitry is configured to detect, in image information that is an image of an object imaged by an imaging device at an imaging position where a background member forms a background, a first boundary between the background member and a shadow of the object at detection positions in at least one of main-scanning and sub-scanning directions on an outline of the object; detect a second boundary between the object and the shadow of the object at detection positions in at least one of the main-scanning and sub-scanning directions on the outline of the object in the image information; detect a boundary group including detection results of the second boundary at the detection positions; and detect an inclination of the object in the image information from detection results of the first boundary, the second boundary, and the boundary group.