Image reading apparatus, image forming apparatus, image reading method and computer readable information recording medium

摘要

An image reading apparatus includes a reading part reading front and back sides of an original; a storage part storing the thus read images and plural processing parameters to be used for image processing; and an image processing part carrying out the image processing on the read images using the plural processing parameters. The image processing part analyzes an image transfer instruction that is an instruction to transmit the read image from the first storage part to the image processing part, and determines which of the processing parameters is to be used for the read image; and transfers the determined processing parameter by a direct memory access transfer method. The processing parameter concerning the read image is transferred from the first storage part to the image processing part by the direct memory access transfer method prior to the image processing of the read image by the image processing part.

主权项

1. An image reading apparatus comprising:
a reading part that reads front and back sides of a sequence of originals; a first storage part that stores read images that are thus read and plural processing parameters to be used for image processing of the read images; and an image processing part that carries out the image processing on the read images using the plural processing parameters, wherein the image processing part includes:
a parameter analysis part that analyzes an image transfer instruction that is an instruction to transmit the read image from the first storage part to the image processing part, and determines which of the processing parameters is to be used for the read image;a DMA transfer control part that transfers the processing parameter, determined by the parameter analysis part, by a direct memory access transfer method, whereinthe DMA transfer control part transfers the processing parameter concerning the read image from the first storage part to the image processing part by the direct memory access transfer method prior to the image processing of the read image by the image processing part, and the image reading apparatus further comprises, a second storage part that stores the plural processing parameters, wherein the plural processing parameters are read out from the second storage part and are stored in the first storage part, and the DMA transfer control part reads out the plural processing parameters from the second storage part by the direct memory access transfer method, compresses the plural processing parameters, and stores the plural processing parameters in the first storage part.