| 摘要 |
PURPOSE:To improve productivity by reducing processing burden on an operator and to improve service by eliminating the anxiety of a purchaser, etc., by deciding the accuracy of the reading of a bar code when it is read by a scanner, and generating and outputting a decision result by a data generating part along with code data. CONSTITUTION:A laser beam is made incident on the bar code 2 attached on a commodity 1 when it passes a reading window 5, and light in accordance with a black/white level is reflected on a photoelectric converter 8. The photoelectric converter 8 changes the light to an electrical signal, and furthermore, changes it to a pulse signal, and a bar code decision circuit 9 decides the width and interval of a bar from the width and frequency of the pulse signal, and discriminates a corresponding digit by the combination of them. In such a case, the decision part 91 decides whether or not the width and interval of the bar code 2 satisfy specifications accurately. A data generating part 92 attaches a value representing accuracy/inaccuracy obtained at the decision part 91 with the code data reading the bar code 2, and generates and outputs the data. |
