Patent ID: 6931148
Filing Date: 2005-08-16
Classification: H04N

Abstract:
1. A paper discriminator for discriminating a paper being conveyed along a conveyance path, the paper discriminator comprising: a line sensor arranged at a first position on the conveyance path, the line sensor acquiring first data on an entire surface of the paper; a point sensor arranged at a second position on the conveyance path, the point sensor acquiring second data on a part of the paper; a memory for storing the first data and the second data in correlation with a common coordinate plane; a data processor for acquiring positional information of the first data on the coordinate plane and acquiring a position of the second data with respect to a position of the first data based on the positional information by correlating the first data and the second data with the common coordinate plane; a storage unit for storing first reference data of the entire surface of the paper corresponding to the first data and second reference data of the entire surface of the paper corresponding to the second data; and a discriminator for comparing the first data with the first reference data and comparing the second data with a part corresponding to the position of the second data in the second reference data, and for discriminating the paper based on the comparing.