Patent ID: 6357660
Filing Date: 2002-03-19
Classification: G06K

Abstract:
A bar code reading apparatus for decoding a character from a bar code data obtained by reading a bar code which expresses a character with a plurality of bars, said bar code reading apparatus comprising:a first correcting unit for correcting a bar width of each of the bars constituting a character to be decoded by referring to a bar width of a reference bar as a reference for a bar width in an already-decoded character; a decoding unit for decoding the character according to a bar width of a bar constituting the character to be decoded corrected by said first correcting unit; a ratio computing unit for computing a ratio between a width of the already-decoded character and that of the character to be decoded; and a second correcting unit for correcting a bar width of the reference bar according to the ratio computed by said ratio computing unit, wherein said first correcting unit corrects the bar width of the bar constituting the character to be decoded when the ratio computed by said ratio computing unit is greater than or equal to a prespecified threshold value according to the bar width of the reference bar corrected by said second correcting unit.