Patent ID: 6945462

Claim:
An optical information reading apparatus, comprising: a light projection means for projecting light to an object to be read having portions with different light reflectances; a reflector for deflecting the reflected light from the object to be read; an imaging optical system for forming an image of deflected light by the reflector a light receiving position; a photoelectric conversion means located at the light receiving position for photoelectrically converting the image made of the deflected light and outputting an electric signal; and a calculation means for calculating the electric signal outputted from said photoelectric conversion means and outputting bar code binarized data indicating information of the object to be read; said calculation means forms a multipurpose processing circuit by integrally providing, on a single substrate; a data converter for converting the electric signal into a digital signal; a digital signal calculation unit having a calculation processor for calculating the digital signal converted by said data converter and generating bar code binarized data, a data correction section for correcting the bar code binarized data, and a noise reduction section for reducing noises, for outputting the bar code binarized data indicating information of the object to be read; an input accumulation unit for accumulating the bar code binarized data output from said digital signal calculation unit; and a timing control unit for controlling operation timings of said light projection means, said photoelectric conversion means, said data converter, said digital signal calculation unit, and said input accumulation unit.