Patent ID: 6695210
Filing Date: 2004-02-24
Classification: G06K

Abstract:
A bar code reader comprising:a bar code data detecting unit for scanning a bar code constituted by a plurality of characters at least twice to detect bar code data on a scanning locus; a demodulating section for demodulating respective bar code data detected by the bar code data detection section; a first judging section for detecting overlapping parts between first demodulated data on a first scanning locus and second demodulated data on a second scanning locus of the demodulated data demodulated by the demodulating section to judge whether the overlapping parts are constituted by a predetermined number of characters or not; a second judging section for, when a judgement is made by the first judging section that the overlapping parts are constituted by a predetermined number of characters, judging whether the overlapping parts are the same between the first demodulated data and the second demodulated data or not; a third judging section for, when a judgement is made by the second judging section that the overlapping parts are the same, judging whether the characters constituting the overlapping parts are the same or not; and a fourth judging section for, when a judgement is made by the third judging section that the characters are the same, judging whether a character just before the overlapping part of the first demodulated data, a character just after the overlapping part of the second demodulated data, and characters constituting the overlapping parts are all the same value or not.