JPH04205298A - Portable data terminal equipment - Google Patents

Abstract

PURPOSE:To enable speedy charging and operation start by using a power source due to a large capacity capacitor. CONSTITUTION:A data terminal equipment 11 is connected with a large capacity capacitor 112 as an electricity preserving body for supplying power to an electronic circuit 113. When charging is advanced and recharging is required, charging terminals 12A and 12B of a charging device 12 are connected to power supply terminals 11A and 11B of the terminal equipment 11. In this way, not a secondary battery requiring long time charging but the large capacity capacitor is used as the power source. Thus, charging can be executed within extremely short time (several minutes) and problems such as forgetting charging or stopping the operation of the terminal equipment in the middle can be canceled.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a portable data terminal device, and particularly to a portable data terminal device that does not require long-term charging and can operate quickly.

(Prior Art) Portable data terminal devices are used in various systems, and among them, POS systems are widely adopted because they can manage a wide area with quick operations9 For example, in restaurants, etc. , a waiter has a terminal device and inputs information such as the type and quantity of orders received from customers in the store from the terminal device, and a receiving device installed in the kitchen receives this information and displays it on a display device. They prepare the dishes you order.

As shown in FIG. 2, the terminal device 21 and the POS receiving device 24 in the kitchen are generally connected via a wireless line, and information is transmitted from the transmitting antenna 22 of the terminal device 21 using a modulated radio wave signal, and the PO8 receiving device 24 The information is restored by demodulating the radio wave signal received via the receiving antenna 23 on the side, and the display device 2
5 is displayed.

The above terminal device is portable and must have a built-in battery as a power source. Conventionally, the batteries for this power supply are
Primary batteries such as dry batteries and rechargeable secondary batteries are used.

FIG. 3 shows an overview of a charging device and a terminal device when a secondary battery is used.

At the time of charging, charging is performed by bringing the battery terminals 33A and 33B of the secondary battery 33 into contact with the charging terminals 32A and 32B of the charging device 32. After charging is completed, connect the battery terminals 33A and 33B of the secondary battery 33 that has been removed from the charging device 32 to the terminal device 31.
Power supply terminals 311A and 311 of the electronic circuit 311 of
B and supplies power to the electronic circuit 311.

(Issues to be Solved by the Invention) As mentioned above, portable data terminal devices in conventional POS systems and the like have a built-in primary battery or secondary battery as a power source.

However, secondary batteries have a relatively short lifespan and must be replaced with a new battery every time the battery reaches the end of its lifespan, which is disadvantageous in terms of economy.

In addition, problems remain in terms of disposal.

Therefore, secondary batteries such as rechargeable storage batteries are used, but they require periodic charging.

Further, secondary batteries for such terminal devices have a relatively large capacity, and it usually takes about half a day to charge them.

Therefore, - in many cases, charging is done at night after work, or if you forget to charge the secondary battery, the secondary battery will be used as a power source when the terminal equipment needs to operate when the store opens the next day. The system will not function as such, and a serious failure will occur when actual operation begins.

Also, since it is difficult to know the amount of charge of a secondary battery,
Conventionally, the elapsed charging time from the start of charging of a secondary battery in the middle of charging must be managed for each battery, and this management is complicated.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a portable data terminal device that can operate quickly even if the user forgets to charge the device.

(Means for Solving Problem No.) In order to solve the above-mentioned problem, a portable data terminal device according to the present invention provides the following features: In a portable data terminal device that sends data obtained through processing by an electronic circuit, the data is supplied to the electronic circuit. The power source is a large-capacity rechargeable capacitor. .

(Function) In the present invention, by using a large-capacity capacitor that can be charged separately as a power source for an electronic circuit built into a portable data terminal device, quick operation is possible even if charging is forgotten.

(Example) Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a portable data terminal device according to the present invention.

A large-capacity capacitor 112 is connected to the data terminal device 11 as an electrical storage body for supplying power to an electronic circuit 113. Power is supplied from the charged large capacity capacitor 112.

The large capacity capacitor 112 is used as a power source, and when the discharge progresses and recharging becomes necessary, the charging terminals 12A and 12B of the charging device 12 are connected to the power terminals 11A and 11B of the terminal device 11. A short-circuit protection circuit 111 is inserted between the power supply terminals 11A and 11B and the large-capacity capacitor 112, and protects the large-capacity capacitor 112 and the electronic circuit 113 when the power supply terminals 11A and IIB are accidentally short-circuited. . The short-circuit protection circuit 111 can be configured with a series-inserted diode.

The present invention uses a large-capacity capacitor as a power source instead of a conventional secondary battery that requires a long charging time, so it can be charged in an extremely short time (within a few minutes), and there is no need to forget to charge it. This solves the problem of the terminal device stopping in the middle of operation.

In addition, a large-capacity capacitor 112 as a power source is fixedly built into the terminal device 11, and the connection point between the electronic circuit 113 and the terminal of the large-capacity capacitor 112 is fixedly connected, so there is no contact point. There is no problem of momentary power outage during operation of the terminal device 11 due to contact failure.Furthermore, the built-in configuration of the large capacity capacitor in the terminal device eliminates the need for a conventional secondary battery attachment/detachment mechanism. The weight is reduced and the configuration is simplified.

In the above embodiments, an example has been described in which the terminal device is connected via a wireless line, but it goes without saying that the terminal device may be connected via a wired line, an optical fiber line, or the like. Also,
The large-capacity capacitor does not need to be fixedly built into the terminal device, and may be removable.

(Effects of the Invention) As explained above, since the portable data terminal device according to the present invention uses a power supply using a large capacity capacitor,
Since the charging time is extremely short, the conventional problem of inability to operate when the user forgets to charge the battery can be solved, and the battery can be quickly charged and started to operate.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an embodiment of a portable data terminal device according to the present invention, FIG. 2 is a side view of the configuration of an order management POS system in a restaurant, etc., and FIG. 3 is a configuration diagram of a conventional portable data terminal device. It is a diagram. 11... Terminal device, 12... Charging device, 111...
Short circuit protection circuit, 112...Large capacity capacitor, 113.Electronic circuit. Agent Patent Attorney Masahiro Fukuyama Figure 3

Claims (1)

[Scope of Claims] A portable data terminal device that transmits data obtained through processing by an electronic circuit, characterized in that the power supply supplied to the electronic circuit is a rechargeable large-capacity capacitor. .