Radio-tag reading apparatus and radio tag
a radio-tag and reading device technology, applied in the field of radio-tag reading devices, can solve the problems of low cost of redesigning the pos terminal, system cannot be widely used, and wrong multi-stage barcodes
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first embodiment
[0031]FIG. 1 is a diagram showing the configuration of a merchandise sales registering system. This system comprises a radio-tag reading apparatus 1 and a POS terminal 2. The radio-tag reading apparatus 1 is composed of a reader / writer 11 and an antenna unit 12 shaped like a flat plate. A telecommunication cable 3 connects the reader / writer 11 to the POS terminal 2. Bi-directional communication can therefore achieved between the reader / writer 11 and the POS terminal 2.
[0032]The POS terminal 2 has a merchandise table 4. The merchandise table 4 stores the data items such as the names of merchandise items and the prices thereof, in association with the codes allocated to the merchandise items, respectively. Upon receiving a merchandise code, the POS terminal 2 searches the merchandise table 4 for the data items about the merchandise item identified by the merchandise code, and reads the data items. Based on the data items thus read, the POS terminal 2 registers the sales data about the...
second embodiment
[0083]The second embodiment differs from the first embodiment in a part of the process the reader / writer 11 performs. In any other respect, the second embodiment is the same as the first embodiment. Therefore, the components identical to those of the first embodiment are designated by the same reference numbers and will not be described in detail.
[0084]FIG. 8 is a flowchart explaining the major steps that the control unit 118 of the second embodiment. As seen from FIG. 8, Steps ST1 to ST7 are identical to those shown in FIG. 6 (first embodiment). In the first embodiment, seven-byte data consisting of the (A+1)th to (A+7)th bytes of the radio-tag data is read from the tag-data buffer 201 in Step ST8. In the second embodiment, the control unit 118 acquires, in Step ST21, eight-byte data consisting of the (A+1)th to (A+8)th bytes of the radio-tag data from the tag-data buffer 201.
[0085]After acquiring the eight-byte data, the control unit 118 determines in Step ST9 whether the (A+1)th ...
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