| 摘要 |
<p>PURPOSE:To prevent the service life of a CRT from being lowered by burning by providing a sensor to detect the existence of an operator in the surface side of a console and a control part to execute the adjustment of CRT luminance according to the signal of the sensor in a POS terminal equipment to execute commodity control and cash control at the time of selling. CONSTITUTION:A POS terminal equipment 1 is composed of a CRT 2, sensor 3 and console 1a in a front surface side. When the operator exists in the front surface side of the console 1a, such a condition is detected by the sensor and a signal to show the existence of the operator is sent from a controller, which is not shown in a figure, provided in the equipment 1. Then, the luminance of the CRT 2 is held constant. Next, when the operator is separated from the console 1a, such a condition is detected by the sensor 3 and samely, the signal to show the absence of the operator is outputted from the controller. Then, the luminance of the CRT 2 is lowered to the prescribed luminance. Thus, the luminance is increased or decreased according to the presence and absence of the operator in front of the console 1a. Then, the CRT is prevented from being burned and energy consumption is reduced.</p> |
