JPH0778446B2 - Face-to-face electronic charge balance - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention uses a customer-side display unit and a store-side display unit, which are profitable to face a customer side and a store side, respectively, to provide a product name, weight, and unit price of a product for sale. -Face-to-face electronic charge scale that displays information such as price.

(Prior Art) In recent years, face-to-face electronic charge scales have been widely used for various sales operations in shops and supermarkets. In this type of face-to-face electronic charge scale, for example, a unit price per weight of a sale product is set, the weight of the sale product is measured by an electronic scale to obtain the sale price, and the sale price, weight, unit price, The names of the products to be sold and the like are provided on the customer side and the store side, respectively, and are displayed on a display device in which each display item is set as shown in FIG. 4, for example.

That is, this type of face-to-face electronic charge balance is mainly composed of the CPU 1 as shown in FIG. 5, and the RAM 4 is used as a work area according to the control program and unit price data stored in the ROM 3 connected via the bus 2. The selling price is calculated according to the weight of the sale item measured by the electronic scale section (not shown). Then, along with the calculated sales price information, the measured weight information, unit price, sales information, etc. are transferred to the display controller 6 via the serial controller 5, and are shown in FIG. The store display 7 and the customer display unit 8 having such a display surface are simultaneously driven to display the above-mentioned information.

However, in this type of device, it is useless to display the information at that time on the customer side display device 8 in the setting mode for registering the sale item name and the data of the unit price, or when performing inspection and settlement operations. Particularly in the case of a face-to-face electronic charge balance for the UK, it is legally prohibited to display the information at that time on the customer side at the time of the above setting, inspection and settlement. In other words, it is legally required that customers should not be presented with unnecessary information such as settings, inspections, and settlements.

Therefore, conventionally, when performing setting, inspection, and settlement operations, the display surface of the customer-side display 8 is covered with a cover so that the display information cannot be seen. However, it is very troublesome to cover the display surface of the customer-side display device 8 with the cover every time these operations are performed, and even though the display surface is covered with the cover, the customer-side display is unnecessary. There was a problem that the display was also displayed on the container 8.

[Problems to be Solved by the Invention] As described above, in the conventional face-to-face electronic charge balance, since the same information is displayed on the display units on the customer side and the store side, respectively, setting, inspection, If you do not want to present the information to the customer side at the time of performing settlement work, or if information display to the customer side is prohibited, it is necessary to cover the display surface of the display device on the customer side with a cover one by one. There was a problem that the work was very troublesome.

The present invention has been made in view of such circumstances, and its purpose is to prohibit only the display on the customer side during setting, inspection, and settlement operations by simple control, and to display only necessary information. An object of the present invention is to provide a highly practical face-to-face electronic charge balance that can be displayed on a display on the store side.

[Means for Solving the Problems] In the face-to-face type electronic toll balance according to the present invention, the store side display is made by changing the control signal given to the blanking terminal of the driver circuit for driving the customer side display unit according to the business mode. The feature is that the dimming control is performed independently of the display operation in the section.

[Operation] According to the face-to-face electronic charge balance configured as described above, the display on the store side and the display on the customer side are performed only by electrical processing, and the customer side is set at the time of setting, inspection, and settlement. It is possible to prohibit the operation of the driver circuit in the display unit and only display the information on the store-side display unit. As a result, it is possible to effectively prevent unnecessary information display on the customer side without covering the display surface of the display unit on the customer side with a cover. It becomes possible to fully satisfy the legal regulations.

[Embodiment] An embodiment of a face-to-face electronic toll scale according to the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic configuration diagram of a main part of a face-to-face type electronic charge balance according to the present invention, in which the same parts as those of the conventional device shown in FIG. The device of this embodiment is characterized in that the display controller 6 electrically controls a drive circuit (segment driver circuit described later) for driving the display 7 for the store and the display 8 for the customer to perform blanking control. It is to be.

That is, these display devices 7 and 8 are generally composed of a numeral / character display device such as a multi-digit 7-segment display device, and each display device is designed to be driven by a predetermined driver circuit.

Figure 2 shows a character display element array for displaying the names of products sold.
The character display element array 11 is cyclically selected by a shift register group 12 and is displayed by a dynamic lighting method by a segment driver group 13 operating in synchronization with this. It is designed to be driven. The segment driver group 13
It receives the character data to be displayed on the character display element whose digit is selected by the shift register group 12, and selectively lights and displays the segment expressing the character.

However, the driver circuit that constitutes the segment driver group 13 is generally provided with a blanking control terminal, and the display can be blanked by a voltage applied to this control terminal. There is.

A display for displaying weight, unit price, and price, respectively, is composed of a multi-digit 7-segment display element array 14, 15, 16 as shown in FIG. 3, and is controlled by the segment driver 17. It is designed to be driven selectively. A blanking control terminal is also provided in the driver circuit forming the segment driver 17, and the display can be blanked by a voltage applied to the control terminal.

In this embodiment, the blanking control terminal in such a segment driver circuit is used, and the CPU 1 is a display device that does not need to display data at the time of executing setting, inspection, and settlement operations, specifically, a customer-side display device. A blanking control signal of "L" level is given to 8 to prohibit the display regardless of whether display data is given to the segment driver.

That is, the CPU 1 sets "L" to the segment drivers 13 and 17 of the customer-side display 8 when setting, inspecting, and adjusting operations are performed.
The blanking control signal of the level is applied and the display is prohibited. As a result, only the segment drivers 13 and 17 of the store-side display 7 whose blanking control terminal is kept at the "H" level are driven, and the display data transferred from the CPU 1 is displayed. .

According to the embodiment apparatus having such a control system, only the display on the customer side display 8 is prohibited (blanking) by the blanking control signal, and the customer side display is independent from the display by the store side display 7. It is possible to simply and effectively prohibit (reduce light) only the display on the display unit 8. Also in the store-side display 7, for example, by giving a blanking control signal to the display timing of the display 14 for displaying the weight, only that display can be selectively prohibited (light reduction).

Therefore, according to the face-to-face type electronic charge balance configured as described above, the application of the blanking control signal to the driver circuit for driving the display of the display can be controlled simply and selectively to achieve the desired result. Data can be displayed on the display. In other words, it is possible to effectively prevent the display of data by a display device that does not require or is prohibited from displaying the data, and keep the display device in the dimmed state. As a result, it becomes possible to display only the necessary data on the store-side display 7 while keeping the customer-side display 8 in the dimmed state when executing the setting, inspection, and settlement operations.

As described above, according to the present invention, the display itself of the customer-side display device 8 can be simply controlled to be turned off without covering the display surface of the customer-side display device 8 with a cover, which is required in the store-side display device 7. Only the data can be displayed. Therefore, if the display control is performed according to the operation (business) mode of the CPU 1, the customer side display 8 will unintentionally display the data at the time of setting, inspection, and settlement operations. It will be possible to deal with legal regulations sufficiently.

The present invention is not limited to the above embodiment. For example, it goes without saying that the blanking control may be manually performed by using a preset switch or the like, and the setting control may be specifically performed for each display item. In addition, the present invention can be variously modified and implemented without departing from the scope of the invention.

[Effects of the Invention] As described above, according to the present invention, in the face-to-face electronic charge balance, the display by the store side display and the display by the customer side display are simplified, and the items that do not need to be displayed are displayed. It is possible to achieve a great practical effect such that only the indicator part of the above can be simply controlled to reduce the light and the display thereof can be prohibited.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a main part of a display control system showing an embodiment of the present invention, and FIGS. 2 and 3 are diagrams showing a configuration example of a display drive unit for explaining the embodiment, respectively. FIG. 4 is a diagram showing a configuration example of a display surface of a display in a face-to-face electronic charge balance,
FIG. 5 is a schematic configuration diagram of a main part of a conventional general display control system. 1 ... CPU, 2 ... Bus, 5 ... Serial controller, 6
…… Display controller, 7 …… Store display, 8 …… Customer display, 11 …… Character display array, 12 …… Shift register group, 13
…… Segment driver group, 14, 15, 16 …… 7-segment display element array, 17 …… Segment driver.

Claims (1)

[Claims] 1. A customer-side display section and a store-side display section, which are provided to face a customer side and a store side, respectively, and driver circuits for electrically driving the customer-side display section and the store-side display section, respectively. A face-to-face type that is equipped with a display control unit that controls in a unified manner, and the display control unit displays information such as the product name and weight / unit price / price of the sold product on the customer side display unit and the store side display unit, respectively. In an electronic toll scale, a control signal given to a blanking terminal of a driver circuit for driving the customer side display section is changed according to a business mode to control light reduction independently of a display operation on the store side display section. Face-to-face electronic charge balance characterized by.