| 摘要 |
<p>A product regognition system for use in a supermarket or like retail store includes a plurality of customer product recognition units (20) and a central unit (50). Customers who are visually impaired can scan barcodes on the products with a scanner (26). The output of the scanner is transmitted by UHF radio link (40) with a code identifying the particular unit (20) to the central unit comprising a PC (52). The product code is looked up in a database (58) and a corresponding description is applied to a voice synthesizer (60). A sound signal is transmitted by a VHF radio link (42) to the customer unit (20) and is played to the customer over earphones (36).</p> |
