JPH03238516A - Pos terminal equipment - Google Patents

Abstract

PURPOSE:To suppress the power consumption, to prevent burning of a CRT, and to extend the life of the CRT by reducing the luminance of the CRT at the time when a keyboard is not operated for a prescribed time. CONSTITUTION:When the power source of an equipment is turned on, the equipment can be used. The operation on a keyboard 4 is possible in this state; and while an operator or the like operates the keyboard 4, the luminance is not changed at all to display information with a certain luminance. When the key operation is interrupted for, for example, 10 minutes, that is, when the counted value of a timer indicates the elapse of 10 minutes, a luminance control circuit 3 is operated to display information with a lower luminance. Thus, the power consumption is suppressed, and burning of the CRT is prevented, and the life of the CRT is extended.

Description

Detailed Description of the Invention Technical Field The present invention relates to a POS terminal device, in particular a keyboard and a C
The present invention relates to a POS terminal device including a display screen such as RT.

PRIOR ART Conventionally, this type of POS terminal device, once powered on, always displayed information on a CRT at a constant brightness. In other words, when operating the keyboard,
The brightness of the CRT remained constant regardless of when it was not being operated.

However, keeping the brightness of the CRT constant means that power is consumed even when the keyboard is not being operated, which is economically undesirable. Further, there is also the drawback that characters, etc. may be burned onto the CRT, and the life of the CRT may be shortened.

Purpose of the Invention The present invention was made in order to solve the above-mentioned conventional drawbacks, and its purpose is to provide a POS system that can reduce power consumption, prevent CRT burn-in, and further shorten the life of the CRT. The purpose is to provide a terminal device.

Composition of the Invention A POS terminal device according to the present invention is a POS terminal device including a key input means and a display means for displaying information at a predetermined brightness, and the operation of the key input means is interrupted for a predetermined period of time. The present invention is characterized by comprising a brightness control means for controlling the information to be displayed at a brightness lower than the predetermined brightness when the information is displayed.

Example Hereinafter, the present invention will be explained in detail using the drawings.

FIG. 1 is a schematic diagram showing the internal configuration of an embodiment of a Pos terminal device according to the present invention. In the figure, a POS terminal device 1 according to an embodiment of the present invention includes a keyboard 4 and a CRT 2.
and a brightness control circuit 3.

The keyboard 4 is used to input various information through operations by an operator, and is composed of a plurality of pushbutton switches.

The brightness control circuit 3 includes a timer (not shown), and is a circuit that determines the brightness of information to be displayed on the CRT 2. In addition, the timer measures the time input by the key photo 4, and when the measured value reaches a certain value, this circuit operates to lower the brightness of the information to be displayed on the CRT 2. .

In this configuration, it is assumed that a timer (not shown) in the brightness control circuit 3 is set in advance to lower the brightness when input from the keyboard 4 is interrupted for 10 minutes.

First, by turning on the power of the device, the device becomes ready for use. In this state, operations using the keyboard 4 are possible, and when the keyboard 4 is being operated by an operator or the like, the brightness does not change at all, and information is displayed at a constant brightness.

However, when the key operation is interrupted and the interruption time reaches the above-mentioned 10 minutes, that is, the count value of the timer becomes 1.
When 0 minutes is indicated, the brightness control circuit 3 operates to lower the brightness and display. On the other hand, when the user starts operating the keyboard 4 again, the brightness control circuit 3 operates to increase the brightness and return it to the original level in response.

In other words, if keyboard operations are interrupted for more than a preset period of time, the brightness is automatically lowered, and then returned to the original brightness when the keyboard operations are resumed. By doing so, it is possible to suppress power consumption, prevent burn-in of the CRT, and further extend the life of the CRT.

Note that a timer (not shown) in the brightness control circuit 3 is a Quijot 4.
The timer is configured so that the time value is reset in response to the operation of the timer, and furthermore, a comparator circuit is constructed using an operational amplifier or the like to compare the count value of the timer with a predetermined value, and the output value of this comparator circuit is It suffices to switch between normal brightness and low brightness depending on the situation, and can be easily constructed by those skilled in the art. Further, a method in which the brightness is not lowered to zero, that is, the display is turned off, or a method in which the brightness is sequentially lowered in multiple stages depending on the operation interruption time is also conceivable.

Furthermore, the set time to be compared with the timer's counted value can be determined in advance at the design stage and stored in memory, or can be set to any value desired by the operator by operating a keypad. One possible method is to do this.

Further, although the present invention relates to a POS terminal device, it is clear that the present invention can be applied to various devices including a CRT. Furthermore, it is clear that the present invention is applicable to display devices other than CRTs, such as well-known liquid crystal display devices and well-known plasma display devices.

DETAILED DESCRIPTION OF THE INVENTION As described above, the present invention reduces power consumption, prevents burn-in on the CRT, and further reduces the brightness of the CRT by controlling the brightness of the CRT to be lowered when no keyboard operations are performed for a predetermined period of time. It has the effect of extending the lifespan of.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing the internal configuration of a POS terminal device according to an embodiment of the present invention. Explanation of symbols of main parts 2...CRT 3...Brightness control circuit 4...Keyboard

Claims (1)

[Claims] (1) A POS terminal device including a key input means and a display means for displaying information at a predetermined brightness, wherein when the operation of the key input means is interrupted for a predetermined period of time, the display device displays information at a lower brightness than the predetermined brightness. A POS terminal device comprising a brightness control means for controlling display of information.