Scanner for all document types and method therefor

摘要

The scanner reads documents (51) and passes digital information to an Application Specific Integrated circuit (49). The circuit carries out numerical processing of input digital pixel information, and stores the information in a FIFO memory. The first pixel in a pixel set is converted by a multiplier, memory operations carried out, and a luminous intensity associated with it from the memory chip. The second and following image pixels are multiplied and a luminous intensity correction applied from a correction table. The complex value of the image pixel is then stored. Subsequent values are similarly stored.