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    • 6. 发明授权
    • Image reading apparatus
    • 图像读取装置
    • US07002705B2
    • 2006-02-21
    • US09879195
    • 2001-06-13
    • Akihiko NakataniTadashi YamamotoKiyoshi Kaneko
    • Akihiko NakataniTadashi YamamotoKiyoshi Kaneko
    • H04N1/40
    • H04N1/00822H04N1/0402H04N1/0405H04N1/0443H04N1/0455H04N1/12H04N1/128H04N1/1911H04N2201/0414
    • Disclosed is an image reading apparatus in which the band width for reading by one scanning is variable in accordance with the original size, the reading mode, etc. R, G, and B image data of the k-th band is successively read in one-band width to store image data R1, G1, and B1 of pixel coordinates X(n, m). Then, the original is fed so as to cause partial overlapping of the (k+1)-th band with a lower predetermined pixel region of the k-th band, and R, G, and B image data of the (k+1)-th band is read in one-band width to successively store image data R2, G2, and B2 of pixel coordinates X(n, m′). The image data obtained through overlap reading of the k-th band and the (k+1)-th band is averaged to calculate correction image data, which is transferred to a host computer along with along other image data which has not been averaged as read image data. And, it is possible to optimize reading time according to the kind of original, reading mode, etc., without involving a deterioration in image quality.
    • 公开了一种图像读取装置,其中通过一次扫描读取的带宽根据原始尺寸,读取模式等而是可变的。第k个频带的R,G和B图像数据被连续地读取在一个 带宽,以存储像素坐标X(n,m)的图像数据R1,G1和B1。 然后,馈送原稿以使得第(k + 1)个频带与第k个频带的较低预定像素区域的部分重叠,以及(k + 1)的R,G和B图像数据 )带读取单条宽度,以连续存储像素坐标X(n,m')的图像数据R2,G2和B2。 对第k个频带和第(k + 1)频带的重叠读取获得的图像数据进行平均,以计算校正图像数据,该校正图像数据与未被平均为读取的其他图像数据一起被传送到主计算机 图像数据。 并且,可以根据原稿的种类,读取模式等优化读取时间,而不会影响图像质量的劣化。