公开(公告)号：US20050024693A1

公开(公告)日：2005-02-03

申请号：US10921846

申请日：2004-08-20

申请人： Takaharu Ouchi ,  Yusuke Hashizume

发明人： Takaharu Ouchi ,  Yusuke Hashizume

IPC分类号： H04N1/00 ,  H04N1/04 ,  H04N1/10 ,  H04N1/193

CPC分类号： H04N1/00002 ,  H04N1/00013 ,  H04N1/00018 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00082 ,  H04N1/1013 ,  H04N1/193 ,  H04N2201/046

摘要： An image reader of the present invention comprises a fluctuation detector that can be connected to the external equipment by means of an image data input-output section, and can subject image data, continuous in a first direction and outputted as image information on a test chart is photoelectrically converted by means of a CCD sensor when a mirror set or the test chart is moved in the first direction, to Fourier conversion, thereby obtaining the frequency of a fluctuation of the obtained image data and a maximum value of the amplitude thereof. If the obtained maximum value of the fluctuation amplitude is greater than a given value, the fluctuation detector is used to compare the frequency of the fluctuation and the natural frequency of a drive motor for generating driving force for moving the mirror set or the image. If the fluctuation frequency and the natural frequency are not equal, the value of current supplied to the drive motor is increased.

摘要翻译： 本发明的图像读取装置包括：波动检测器，其能够通过图像数据输入输出部连接到外部设备，并且可以将图像数据沿第一方向连续地作为图像信息输出到测试图上 当反射镜组或测试图沿​​第一方向移动时，通过CCD传感器进行光电转换，进行傅里叶变换，从而获得所获得的图像数据的波动频率和其幅度的最大值。 如果获得的波动幅度的最大值大于给定值，则波动检测器用于比较用于产生用于移动镜像组或图像的驱动力的驱动马达的波动频率和固有频率。 如果波动频率和固有频率不相等，则提供给驱动马达的电流值增加。

公开(公告)号：US06771397B2

公开(公告)日：2004-08-03

申请号：US09803038

申请日：2001-03-12

申请人： Yusuke Hashizume

发明人： Yusuke Hashizume

IPC分类号： H04N104

CPC分类号： H04N1/1026 ,  H04N1/00525 ,  H04N1/0464 ,  H04N1/1013 ,  H04N1/1056 ,  H04N1/12 ,  H04N1/193 ,  H04N1/401 ,  H04N2201/044

摘要： The image reader according to the present invention is able to set the accurate threshold level free of influence of dirt and dust even when the reference “white” level is requested for shading correction during the acceleration while the carriage is being accelerated without increasing the averaging frequency when the reflected light from the white board is read for shading correction. In addition, because the distance between the head end of the transparent glass and the home position as well as the distance between the home position and the reading window are shortened, the size of the image reader is reduced.

摘要翻译： 根据本发明的图像读取器能够设置准确的阈值水平，即使当在加速时加速期间请求参考“白色”电平用于阴影校正而不增加平均频率时，灰尘和灰尘也不受影响 读取来自白板的反射光用于阴影校正。此外，由于透明玻璃的头端与原始位置之间的距离以及原始位置和读取窗口之间的距离缩短，所以尺寸 的图像读取器被减少。