Patent ID: 6249359
Filing Date: 2001-06-19
Classification: H04N

Abstract:
An information input device that scans in character and graphical information, corrects the scanned information, and outputs the corrected scan information in computer-readable form, comprising:an image input circuit to acquire the character and graphical information from a manuscript, said image input circuit including an image sensor capable of reading the character and graphical information from the manuscript when illuminated by a light source and converting the read in character and graphical information into corresponding image data; andan image processing device coupled to said image input circuit, said image processing device comprising:a buffer to receive and store plural blocks of the image data generated by said image input circuit on a per block basis, said buffer having a predetermined depth each block of image data having a specified data size, said buffer comprising:means for storing a received one of the image data blocks;a sequentially addressed remaining free area for storing at least a portion of a sequentially received image data block when the sequentially received image data block fails to exceed the remaining area;a plurality of randomly addressed free areas for storing a portion of the sequentially received image data block when the sequentially received data block exceeds the remaining free area; andan image correction circuit coupled to said buffer for performing image correction on the image data stored in said buffer.