JPH07200764A - Memory card alarm notification device - Google Patents

Abstract

PURPOSE:To make it possible to know the lowering in the battery voltage of all the memory cards by providing a battery monitoring part monitoring the lowering in the battery voltage and a display part displaying the state of the battery according to the monitoring result. CONSTITUTION:A memory card 11 has an interface part 13 exchanging data and control signal with a POS main body 12, a data recording part 14 having a memory circuit performing the storing of the data and the reading of the stored data from the interface part 13, a battery part 15 for supplying power to the whole of the memory card and holding data, a battery monitoring part 16 monitoring the lowering in the battery voltage of the battery part 15 and a display part 17 displaying the state of the battery. When it is detected that the battery voltage lowers below a prescribed level by the battery monitoring part 16, the display part 17 displays an alarm by a liquid crystal display. Therefore, the data recorded in the memory card 11 is not extringuished while a user is unaware of it and the data can be held.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a memory card alarm notification device, and more particularly to an alarm notification device used as an auxiliary storage device of a POS system for notifying a low battery of a memory card.

[0002]

2. Description of the Related Art Conventionally, some memory cards hold data recorded in the memory card by a battery built in the memory card. Further, the battery level is monitored by the POS main body and displayed on the display section of the POS main body when the memory card is attached to the POS main body.

FIG. 2 is a circuit diagram showing an example of a conventional memory card alarm notification device. In the figure, the memory card 21 has an interface section 23, a recording section 24, and a battery section 25, and the data recorded in the recording section 24 is supplied with power from the battery section 25 and held therein. PO
The battery monitoring unit 29 of the S body 22 includes the interface unit 28 of the POS body and the interface unit 2 of the memory card.
A signal transmitted / received between the terminals 3 and 3 is used to monitor the battery level of the battery unit 25. When the low battery is detected, the battery monitoring unit displays an alarm on the display unit 26 of the POS main body.

The POS main body 22 has an insertion port (not shown) into which a memory card is inserted, and when the memory card is inserted into the insertion port, the interface unit 23 and the interface unit 28 are connected to each other so that the battery level can be detected. It is like this. There are also mounting methods other than the plug-in type.

[0005]

In the above-mentioned conventional memory card alarm notification device, it is possible to know that the battery of the memory card mounted on the POS main body is low.
There is no way to know when the battery of a memory card not attached to the POS main unit is low. Therefore, there is a drawback that valuable store data disappears without the user's knowledge.

It is an object of the present invention to provide a memory card alarm notifying device which solves the above-mentioned drawbacks and makes it possible to know the low battery level of all memory cards.

[0007]

According to the present invention, a POS
In order to notify the battery shortage of the memory card in the POS system having the main body and the memory card for storing the data from the POS main body, the memory card has an interface section for exchanging data and control signals with the POS main body. , A data recording unit for storing data from the interface unit and reading the stored data, a battery unit for supplying power to the memory card to hold the data, and a battery unit for monitoring the decrease of the battery It has a battery monitoring unit that outputs a monitoring result and a display unit that displays a battery state according to the monitoring result. The POS main body has a mounting unit that mounts a memory card.
An interface unit that is connected to the interface unit of the memory card when it is mounted and exchanges data and control signals, a battery monitoring unit that monitors the decrease of the battery according to the monitoring result from the memory card, and a battery that responds to the output of the battery monitoring unit. There is provided a memory alarm notification device having a display section for displaying the state of.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a memory card alarm notification device according to an embodiment of the present invention. In the figure, a memory card 11 is a data having an interface section 13 for exchanging data and control signals with the POS main body 12, and a memory circuit for storing data from the interface section 13 and reading the stored data. A recording unit 14, a battery unit 15 for supplying power to the entire memory card and holding data, a battery monitoring unit 16 for monitoring the battery level of the battery unit 15, and a display unit 17 for displaying the state of the battery. Have.

The POS main body 12 is the memory card 1
An interface unit 1 that has a mounting unit (not shown) for mounting 1 and is connected to the interface unit 13 of the memory card at the time of mounting to exchange data and control signals.
8, a battery monitoring unit 19, and a display unit 30.
The POS main body 12 has a data processing unit for creating data such as sales and product management and a communication control unit with the center, which is omitted in FIG.

In this embodiment, the memory card 11 is a POS.
The POS main body 12 is a device that records and stores data from the main body 12 and moves the data, and the POS main body 12 is a device that sells products and processes data.

The interface unit 18 of the POS main body is connected to the interface unit 13 of the memory card to exchange data such as product sales and sales, and also receives battery monitoring data from the battery monitoring unit 16 from the interface unit 13. To do. The data such as products and sales received by the interface unit 18 is sent to a data processing circuit (not shown). The battery monitoring unit 19 has a function of monitoring a low battery based on the battery monitoring data received from the interface unit 18, and causes the display unit 30 to display the monitoring result.

When the interface unit 13 receives data such as product sales and sales from the interface unit 18 of the POS main body, the data is transferred to the data recording unit 14, and the data recording unit 14 stores the data. The battery monitoring unit 16 has a function of monitoring the battery unit 15 and detecting a decrease in the battery, and also generates display data for displaying the state of the battery on the display unit 17. The display unit 17 is a liquid crystal display, and displays an alarm when the battery monitoring unit 16 detects that the battery voltage drops below a predetermined voltage.
Here, the predetermined voltage is assumed to be the minimum voltage required to store data in the data recording unit 14. A small replaceable battery is used for the battery unit 15, but the memory card 1
It may be one that can be charged while it is still in 1.

In the embodiment described above, the battery unit 17
Although the power is supplied to all the circuits in the memory card 11, the power may be supplied only to the memory part of the data recording part 14, the battery monitoring part 16 and the display part 17. In this case, the portion not supplied by the battery unit 17 may be driven by the power source from the POS body when the memory card 11 is connected to the POS body 12. by this,
The power consumption of the battery unit 17 is limited only to data storage and battery monitoring, and the life is extended.

[0015]

As described above, the memory card alarm notification device according to the present description can detect the low battery of the memory card when the POS body is mounted or not mounted. Therefore, the data recorded on the memory card can be retained without being erased without the user's knowledge.

This is the original usage environment of the memory card in the POS system. It is necessary to use a plurality of memory cards and replace the memory cards as needed. Considering that there is more than one data and the data must be surely stored, it can be said to be a very large effect.

[Brief description of drawings]

FIG. 1 is a block diagram showing a memory card alarm notification device according to an embodiment of the present description.

FIG. 2 is a block diagram showing a conventional memory card alarm notification device.

[Explanation of symbols]

 11 memory card device 12 POS main body 13 interface section 14 data recording section 15 battery section 16 battery monitoring section 17 display section 18 POS main body interface section 19 POS main body battery monitoring section 30 POS main body display section

Claims (3)

[Claims] 1. A memory card alarm notifying device for notifying a battery shortage of the memory card in a POS system having a POS main body and a memory card for storing data from the POS main body, wherein the memory card is the memory card An interface unit for exchanging data and control signals with the POS main body, a data recording unit for storing data from the interface unit and reading the stored data, and supplying power to the memory card. The POS includes a battery unit for holding data, a battery monitoring unit that monitors a decrease in the battery of the battery unit and outputs a monitoring result, and a display unit that displays a battery state according to the monitoring result. The main body has a mounting portion for mounting the memory card, An interface unit connected to the interface unit for exchanging data and control signals, a battery monitoring unit for monitoring the decrease of the battery according to the monitoring result from the memory card, and an output of the battery monitoring unit. And a display section for displaying the state of the battery according to the present invention. 2. The memory alarm notification device according to claim 1, wherein the battery unit supplies battery power to the data recording unit, the battery monitoring unit, and the display unit. 3. The memory alarm notification device according to claim 1, wherein the display unit of the memory card is a liquid crystal display.