| 摘要 |
A laser barcode scanner and its execution method apply a ranging method by light to quickly measure a distance between the laser barcode scanner and a barcode, and using a signal processor for computing and converting signals, to automatically control a rotation angle of a rotating device, such that a width of a scanning light emitted by the laser barcode scanner can be adjusted at any time automatically. Therefore, when being used at a different distance, a proper intensity and width of the scanning light can be adjusted automatically dependent on the distance, so as to largely improve an access efficiency of the laser barcode scanner.
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