| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for controlling signal reading of a barcode scanner. SOLUTION: An instruction light source including carriers is projected to a target by utilizing an optical structure currently employed in the barcode scanner, a reflected signal frequency is subsequently received and confirmed, it is confirmed that the target has already existed within a reading range, it is also ascertained that the barcode scanner has already and accurately been directed to the barcode that is subjected to reading preparation, and after that, a scanning structure is started to read the barcode.</p> |
