公开(公告)号：US20130242355A1

公开(公告)日：2013-09-19

申请号：US13798511

申请日：2013-03-13

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kenji MORITA ,  Yohei Katto ,  Satoshi Seki ,  Akiko Kanno ,  Hidenori Sunada ,  Asahiro Nakayoshi

IPC: H04N1/00

CPC classification number: H04N1/00734 ,  H04N1/00482 ,  H04N1/00708 ,  H04N1/00771 ,  H04N2201/0081 ,  H04N2201/33321 ,  H04N2201/33328 ,  H04N2201/33335 ,  H04N2201/33378

Abstract: An original reader capable of being downsized without requiring a large-capacity image memory. A conveying path conveys an original. Sensors are arranged on the conveying path, for detecting the conveyed original. CCD line sensors read the conveyed original. A CPU of the image reader decides the size of the conveyed original based on the results of detection by the sensors. An image memory stores image data output from the line sensors. The CPU transmits the decided original size and the stored image data to a controller. When the CPU cannot decide the original size at a predetermined timing, it transmits one of original size candidates to the controller, as a provisional original size. When the size of the original decided afterwards is different from the provisional original size, the CPU retransmits the decided size of the original.

Abstract translation: 一种能够缩小尺寸而不需要大容量图像存储器的原始读取器。 输送路径传送原稿。 传感器布置在传送路径上，用于检测传送的原稿。 CCD线传感器读取传送的原稿。 图像读取器的CPU基于传感器的检测结果来决定传送的原稿的尺寸。 图像存储器存储从线传感器输出的图像数据。 CPU将决定的原稿尺寸和存储的图像数据发送到控制器。 当CPU不能在预定定时决定原始大小时，将原始尺寸候选者之一作为临时原始尺寸传送给控制器。 当原来决定的尺寸与临时原始尺寸不同时，CPU重新发送原来的尺寸。