JPS60160419A - Power supply control system - Google Patents

Abstract

PURPOSE:To improve the safety by providing a power supply control means transmitting an inquiry signal at each prescribed time to plural terminal devices and starting a controller with a response signal from any of them so as to save power consumption. CONSTITUTION:Plural electronic registers 1a-1c... are connected to a terminal controller (hereinafter called T/C) 2 connected to a computer center through a communication line via a power supply controller 4 having a controller section 5 and its transaction data is transmitted to the computer center via the said T/C2. The control section of the said power supply controller 4 transmits the inquiry signal about the operating state at a prescribed time interval to the electronic registers 1a-1c... and gives a signal to an FF8 when a response signal is received, and a changeover section 7 changes the line to the position of the T/C2. Moreover, a line control section 6 controls the transmission of the inquiry signal and the reception of the response signal with the electronic registers 1a- 1c....

Description

DETAILED DESCRIPTION OF THE INVENTION (a1 Technical field of the invention)
Regarding the power control method of a control device that commonly controls multiple terminal devices such as a system (hereinafter referred to as PO8),
In particular, the present invention relates to a power supply control method that allows a control device to be activated only when a terminal device is in operation.

(b) Technical Background In recent years, with the spread of computer network systems, electronic cash registers have been widely used as PO8 terminals in department stores, supermarkets, and the like.

Electronic registers are operated by operators such as store clerks,
For example, by inputting the product price from the keyboard or by reading the barcode written on the product label with a reading device, the product price is displayed one by one on the display, and finally the total price is displayed by pressing a button, and then the printer prints the product price. generates a receipt for each sales transaction and records a journal at the same time.

A plurality of such electronic registers are connected to a common control device and controlled.

In this case, since the control device is powered on regardless of whether the electronic register is in operation, a method is desired in which the power is turned on only when the electronic register is in operation.

(C1 Prior Art and Problems) The conventional method will be explained below by taking a POS system as an example and referring to the block diagram in Fig. 1. As shown in the figure, the electronic registers la, 1 b, IC, (hereinafter referred to as T/C) 2 via a private line, and TIO2 is connected to a computer center 3 via a communication line.

The electronic registers la, 1b, 1c, - are each equipped with a power supply and a control unit (not shown), but since transaction data is sent to the computer center 3 via TlO2, the electronic registers la, lb, In order to operate any one of the T/Cs 1c and -, the power of the T/C 2 must be turned on.

Therefore, TlO2 is always powered on so that it can respond to the operation of electronic registers la, 1b, lc, - at any time. electronic register la.

1b, 1c, - are operated by turning on the power only when necessary.

However, according to this method, electronic registers la, l
Even if b, lc, -- are all powered off, TlO2 is powered on, which not only shortens the lifespan of TlO2, but also wastes power and poses safety issues. There is.

(d1 Purpose of the Invention The purpose of the present invention is to solve the above-mentioned drawbacks, and is to provide a power supply control system that can activate the control device only when the terminal device is in operation.

(e1 Configuration of the Invention The present invention provides a power supply control means that transmits a timing signal to a plurality of terminal devices at predetermined time intervals and activates a control device in response to a response signal from any one of the plurality of terminal devices to the timing signal. This is a power supply control system characterized by the following features: In this way, the purpose can be achieved.

Tf) Embodiment of the Invention An embodiment of the invention will be described below with reference to FIGS. 2 and 3. FIG. 2 is a block diagram showing an embodiment according to the present invention, and FIG. 3 is a block diagram showing main parts of FIG. 2 in detail. The same reference numerals refer to the same objects throughout the design.

2 and 3, 4 is a power supply control device, 5 is a control section, 6 is a line control section, 7 is a switching section, 8 is a flip-flop (hereinafter referred to as FF), 12 is a T/C, and 12a is a power source. show.

The control unit 5 includes electronic registers la, lb, and lc.

A timing signal (hereinafter referred to as polling) inquiring whether any one of the devices has entered the operating state is sent to the electronic registers fat lb, lc, etc. at predetermined time intervals, and if there is no response signal, polling is stopped. If there is a response signal, it sends a signal to the FF 8 and also instructs the switching unit 7 to connect the line of the electronic registers 1a, 1b+LC*'--- to the TlO 12 side.

The line control unit 6 includes electronic registers Ia, lb, IC1°-
・Controls the transmission of polling with ° and the reception of response signals.

In the normal state, the switching unit 7 switches between the electronic registers 1a, 1b, and lc.
, -.
, '- are connected to TiCl2, and when a switching command is received from the T/C 12, it has a function of switching to the original connection a state.

The FF8 detects a signal from the control unit 8 and sends the signal to the TiCl2.

TiCl2 has the function of TlO2 described in the conventional example, and the switching unit 7 is in the connected state, and the FF8
When the signal is sent, the power supply 12a is turned on. It also has a function of sending a switching command to the switching section 7 and turning off the power supply 12a when all of the electronic registers la, lb, 1c, ... have stopped.

Having such a configuration and function, the power supply control unit 4 performs polling, and when a response signal arrives, the control unit 5 switches the FF.
8, and also sends a switching command to the switching section 7.

The switching unit 7 switches the connection a to connect and connects the lines of the electronic register 1a+lbl lc,- to the TiCl2.

Then, the power supply 12a is turned off by the signal sent from FF8.
N, electronic registers la, lb, lc, - and T/C1
2 connection becomes valid and data processing etc. are performed.

When all of the electronic registers la, lb, lc, - stop, the T/C 12 instructs the switching unit 7 to change the connection a
and turn off the power supply 12a. Then, the control unit 5 starts polling again.

In this way, when any of the electronic registers la, Ib, lc, - is in operation, it is connected to the T/C 12 and the T
/Turn on the power supply 12a of CI2, and open the electronic register la,
When lb, Ic, - are all stopped, power supply 12a
can be turned off.

Therefore, the life of the T/C 12 can be extended, power consumption can be reduced, and safety can be improved.

Although the above description has been made using a POS system as an example, the present invention can generally be applied to a system in which a terminal device is connected to a control device for control. For example, similar effects can be obtained even when applied to teller machines, automatic transaction machines, etc. in financial institutions.

(g1) According to the present invention, as described in detail, the control device can be activated only when the terminal device is in operation, so that (1) the life of the control device can be extended.

■Power consumption can be reduced.

■Improves safety.

There is an effect.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a conventional method, FIG. 2 is a block diagram showing an embodiment according to the present invention, and FIG. 3 is a block diagram showing the main part of FIG. 2 in detail. In the figure, la, lb, IC, - are electronic registers, 2
．． 12 is a T/C, 4 is a power supply control device, 5 is a control section, 6 is a line control section, 7 is a switching section, 8 is an FF, and 12a is a power supply.

Claims (1)

[Claims] In a data processing system comprising a plurality of terminal devices and a control device commonly connected to the plurality of terminal devices to control the plurality of terminal devices, a timing signal is sent to the plurality of terminal devices at predetermined intervals. and a detection means for detecting a response from a terminal device to the nuclear alignment signal, and activating the control device in response to a response signal from any of the plurality of terminal devices. A power control system featuring: