Patent ID: 6011880
Filing Date: 2000-01-04
Classification: G06K

Abstract:
An encoded symbol reading device for reading an encoded symbol, comprising:means for receiving an optical image of an encoded symbol and outputting an image signal corresponding to said optical image, said receiving means having a plurality of image receiving pixels, a signal representing an amount of light incident to each of said plurality of pixels being an output from said receiving means;means for generating horizontal and vertical synchronous signals;means for driving said receiving means to output said signal representing an amount of light incident to each of said plurality of pixels synchronously with said horizontal and vertical synchronous signals;means for converting each signal representing an amount of light incident to each of said plurality of pixels into an m-bit digital data, wherein m is greater than one;means for generating 1-bit digital data corresponding to each of said plurality of pixels by evaluating said m-bit digital data corresponding to each of said plurality of pixels;means for storing said 1-bit digital data generated by said generating means; andmeans for controlling said storing means to store said 1-bit digital data, addressing of said storing means being determined based on said horizontal and vertical synchronous signals.