DATA WRITING/READING DEVICE, AND IMAGE PROCESSOR

PROBLEM TO BE SOLVED: To efficiently execute processing for sequentially writing each data constructing array data with data arrayed in a memory and processing for reading a plurality of designated pieces of data from the memory in parallel.SOLUTION: A peripheral region of an optional position on an image is composed of N (N is an integer of two or more) pixels. Each pixel of the image is classified into N types in accordance with a position on the image so as to give classifications different from each other to each pixel in the peripheral region. An address is given to each section obtained by dividing each pixel on the image into M units (M is an integer is two or more and equal to or less than N). A data writing/reading device (1) includes M bank memories (B) which correspond to the whole classifications of N types, each having different corresponding classification, writes a pixel value in the address given to the section with the pixel belonging thereto, of a bank memory corresponding to the classification of the pixel about each pixel, and reads the pixel value from the address given to the section with the pixel belonging thereto in parallel, of the bank memory corresponding to the classification of the pixel about each pixel in the peripheral region. 【課題】データを配列した配列データを構成する各データをメモリに順次に書き込む処理と、指定された複数個のデータをメモリから並列に読み出す処理とを効率良く実行する。【解決手段】 画像上の任意の位置の周辺領域はＮ個（Ｎは２以上の整数）の画素から成る。周辺領域内の各画素に互いに異なる分類が付与されるように、画像上の各画素を画像上の位置に応じてＮ種類に分類する。画像上の各画素をＭ個単位（Ｍは２以上Ｎ以下の整数）に分割した区画毎にアドレスを与える。データ書込／読出装置（１）は、Ｎ種類の分類の全てと対応し、かつ、各々が対応する分類が異なる、Ｍ個のバンクメモリ（Ｂ１〜Ｍ）を備え、各画素について、画素の分類に対応するバンクメモリの、画素が属する区画に与えたアドレスに画素値を書き込み、周辺領域内の各画素について、画素の分類に対応するバンクメモリの、画素が属する区画に与えたアドレスから画素値を並列に読み出す。【選択図】図１