公开(公告)号：US20040130553A1

公开(公告)日：2004-07-08

申请号：US10739344

申请日：2003-12-19

申请人： Canon Kabushiki Kaisha

发明人： Katsutoshi Ushida ,  Yuichi Naoi ,  Yoshiaki Katahira ,  Yasuyuki Nakamura ,  Koichi Morishita ,  Makoto Fukuo

IPC分类号： G09G005/39 ,  G06F012/06

CPC分类号： G06T1/60 ,  G06T1/0007

摘要： To provide an image processing technique compatible with both a CCD and a CIS, which controls storage of image data read by each device in a memory and the read of the stored data for each rectangular area to obtain a high memory efficiency, an image processing apparatus includes a memory area control section which sets, for image data bitmapped on a first memory, a rectangular area divided in a main scanning direction and sub-scanning direction, an address generation section which generates address information to read out image data corresponding to the rectangular area in correspondence with the set rectangular area, a memory control section which reads out the image data corresponding to the rectangular area and DMA-transfers the image data to a second memory in accordance with the generated address information, and an image processing section which executes image processing for each rectangular area of the DMA-transferred data by using the second memory.

摘要翻译： 为了提供与CCD和CIS兼容的图像处理技术，其控制存储器中的每个设备读取的图像数据的存储器以及用于每个矩形区域的存储的数据的读取以获得高的存储器效率，图像处理装置 存储区域控制部分，对于在第一存储器上位映射的图像数据，设置在主扫描方向和副扫描方向上分割的矩形区域，生成地址信息以读出对应于矩形的图像数据的地址信息 区域，与设置的矩形区域对应的存储器控​​制部分，读出对应于矩形区域的图像数据的存储器控​​制部分，并且根据生成的地址信息将图像数据DMA传送到第二存储器;以及图像处理部件，其执行 通过使用第二存储器对DMA传送数据的每个矩形区域进行图像处理。