Patent ID: 6343742
Filing Date: 2002-02-05
Classification: G06K

Abstract:
A bar code reader comprising:a bar code data detection section for scanning a bar code to detect bar code data; a demodulation data generation section for generating demodulation bar code data including data of an entire bar code from the bar code data detected by the bar code data detection section; a storage section for storing demodulation bar code data generated by the demodulation data generation section; a clocking section for, when the demodulation bar code data is stored in the storage section, every demodulation bar code data, starting clocking of permission time in which the appropriateness of the same demodulation bar code data as the corresponding demodulation bar code data is recognized and of prohibition time in which the appropriateness of the same demodulation bar code data as the corresponding demodulation bar code data is rejected and which is ended after a lapse of the permission time; an area determining section for, when demodulation bar code data is generated by the demodulation data generation section, specifying the demodulation bar code data as an object to be processed and for determining in which of a first area and a second area the demodulation bar code data to be processed is obtained when a scanning range of the bar code is divided by two with respect to a vertical surface; a detection section for, when determined by the area determining section that the demodulation bar code data to be processed is obtained in the first area, detecting the same demodulation bar code data as the demodulation bar code data to be processed; and a determining section for, when the clocking of the permission time corresponding to the demodulation bar code data detected by the detection section is ended and the clocking of the prohibition time is not ended, determining the demodulation bar code data to be processed as inappropriate demodulation bar code data.