JPH047796A - Reading/writing device for loadable/unloadable electronic memory - Google Patents

Abstract

PURPOSE:To improve the reliability of the above reading/writing device by confirming the data storage state secured by a battery in a loadable/unloadable electronic memory in a state where the memory is connected to an automatic vending machine. CONSTITUTION:When a loadable/unloadable electronic memory 4 is connected to the automatic vending machine, a feeding circuit is actuated to supply the voltage of a prescribed level to the memory 4. Then a prescribed code is written into a prescribed area of the memory 4. Then the circuit 7 is stopped for a fixed time and the supply of power is also stopped to the memory 4. When the circuit 7 is actuated again, the data are read out of the prescribed area and collated with the prescribed code. Thus it is possible to detect the abnormality of the memory 4 and the consumption of a battery 2 with the memory 4 connected to the vending machine. As a result, the reliability is improved for the reading/writing device of the memory 4.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a read/write device for a removable electronic memory in a vending machine.

BACKGROUND ART For example, as shown in Japanese Patent Application Laid-Open No. 58-200388, a conventional data check method for electronic memory is such that when various data is stored in an electric preformed memory backed up by a battery, the data check method is This data and check data having the same content are stored, and when the power is restored, the data is compared with the check data to check the data.

Problems to be Solved by the Invention However, in the above conventional configuration, the electronic memory and the power supply circuit for its control circuit are the same, and in the case of removable electronic memory, the removable electronic memory automatically Check the data storage status of the battery inside the removable electronic memory when removed from the vending machine.
It has the disadvantage that it cannot be used while the removable electronic memory is connected to the vending machine.

The present invention solves the above-mentioned conventional problems, and makes it possible to check the data storage state by the battery configured inside the removable electronic memory while the removable electronic memory is connected to a vending machine. The present invention provides a highly reliable removable electronic memory read/write device.

Means for Solving the Issues In order to achieve this objective, the removable electronic memory read/write device of the present invention operates a power supply circuit when the removable electronic memory is connected to a vending machine. A predetermined voltage is supplied to the removable electronic memory, a predetermined code is written in a predetermined area of the removable electronic memory, the power supply circuit is then stopped for a certain period of time, the power supply to the removable electronic memory is stopped, and the power supply circuit is restarted. is activated, data in a predetermined area is read out, comparison is made with a predetermined code, and the removable electronic memory is checked.

It is possible to detect abnormalities in the battery and battery depletion.

Embodiment Hereinafter, a read/write device for a removable electronic memory according to an embodiment of the present invention will be described with reference to one drawing.

FIG. 1 is a block diagram showing an embodiment. In FIG. 1, 1 is a writable memory that stores various data such as sales amounts of multiple vending machines, and 2 is a writable memory 1.
3 detects an external voltage, and when a predetermined external voltage is detected, data can be read and written from the writable memory 1 in the data storage state by the battery 2. 4 is a removable electronic memory consisting of a writable memory 1 for storing various data such as sales amounts of a plurality of vending machines, a battery 2, and a power supply detection device 3; 6 is a main control unit that controls the vending machine and the removable electronic memory 4; 6 is a detachment detection device that is connected to the main control unit 6 and detects attachment/detachment of the removable electronic memory 4; 7 is a main control unit; 8 is an internal writable memory that is connected to the main control section 6 and stores data necessary for controlling the vending machine; This is a display unit that is connected to the main control unit 5 and displays the control status of the vending machine.

FIG. 2 is a flowchart showing the operation of the removable electronic memory read/write device in the embodiment.

Hereinafter, the operation of the removable electronic memory read/write device will be explained with reference to Part 2.

The main control unit 5 has a removable electronic memory 4 and a removable detection device 6.
When it is detected that it is connected to a vending machine (step 1), a predetermined voltage is supplied from the power supply circuit 7 to the removable electronic memory 4 (step 2). The main control unit 5 reads data D1 from a predetermined area A of the writable memory 1, and -
The data is then stored in the internal writable memory 8 (step 3).

A predetermined code D2 is written in a predetermined area A of the writable memory 10 (step 4), and then the power supply circuit 7 is stopped and the writable memory 1 is brought into a data storage state by the battery 2 (step 6). After a certain period of time, the power supply circuit 7 supplies the predetermined voltage υ again (step 6), and the data D3 in the predetermined area A of the writable memory 1 is read out and compared with the predetermined code D2 (step 7). If there is a discrepancy as a result of the comparison, it is determined that there is an abnormality in the removable electronic memory 4, and an error is displayed on the display section 9 (step 8).
), the process to the removable electronic memory 4 is ended (step 11). If the comparison results in a match, the data D1 stored in the internal writable memory 8 is read out and written to a predetermined area A of the removable electronic memory 4 (step 9), and the processing to the removable electronic memory 4 is continued. (Step 1o).

As described above, according to this embodiment, the removable electronic memory 4
To detect an abnormality in the removable electronic memory 4 and a depletion of the battery 2 by controlling power supply to the removable electronic memory 4 while the removable electronic memory 4 is connected to the vending machine. I can do it.

Effects of the Invention As described above, the present invention supplies a predetermined voltage to the removable electronic memory from a power supply circuit while the removable electronic memory is connected to a vending machine, Write a predetermined code to the area, stop the power supply circuit, store data for a certain period of time, then supply power again from the power supply circuit, read data from the predetermined area of the removable electronic memory, and check against the predetermined code. This makes it possible to detect abnormalities in the removable electronic memory and battery consumption, so processing is performed to the removable electronic memory only when the removable electronic memory is normal, ensuring that data can be written to the removable electronic memory. A highly reliable removable electronic memory read/write device can be provided.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a removable electronic memory read/write device according to an embodiment of the present invention, and FIG. 2 is a flowchart of FIG. 1. 1... Writable memory, 2... Battery, 3... Power supply detection device, 4... Removable electronic memory, 5...・Main control unit, 6...
...Detachment detection device, 7...Power supply device, 8...
. . . Internal writable memory, 9 . . . Display section.

Claims (1)

[Claims] A writable memory for storing various data such as sales amounts of a plurality of vending machines, a battery for storing data in the writable memory, and detecting voltage from an external source,
a removable electronic memory comprising a power supply detection device that supplies a predetermined voltage that changes the writable memory from a data storage state using the battery to a data writable state when a predetermined external voltage is detected; and an automatic vending machine. a main control section that controls the machine; a detachment detection device that is connected to the main control section and detects attachment/detachment of the removable electronic memory; It consists of a power supply circuit that supplies voltage and a display unit that is connected to the main control unit and displays the control status of the vending machine, and when the removable electronic memory is connected to the vending machine,
The power supply circuit is activated to supply a predetermined voltage to the removable electronic memory, a predetermined code is written to a predetermined area of the removable electronic memory, the power supply circuit is stopped, and the removable electronic memory is operated for a certain period of time. After stopping power supply to the memory, activating a power supply circuit to supply power to the removable electronic memory, and comparing data stored in a predetermined area of the removable electronic memory with the predetermined code, If they match, processing to the removable electronic memory is continued; if there is a mismatch, it is determined that the removable electronic memory is abnormal, an error is displayed on the display, and the removable electronic memory is A removable electronic memory read/write device characterized in that no further processing is performed on the electronic memory.