JPS61266039A - Power source unit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a power supply device suitable for a computer network system, etc., and in particular, a power supply device that automatically supplies power in response to a control signal from a remote location, and when a series of operations are completed. The present invention relates to a power supply device that can automatically cut off the supply of TLl.

[Prior Art 1 Conventionally, this type of power supply device starts supplying power to the connecting device and (load) in response to an external instruction signal, and starts supplying power to the connected device and (load) at the same time as 1° in response to a power-off command from the connected device. There is a method that stops the power supply.

There is no problem with this type of power supply if the device connected to the power source is a device that always operates by starting from a remote location, but if it is an intelligent terminal device or multi-device device that can start processing operations by itself, there is no problem. Advanced devices such as personal computers may be connected to a network system, and if these devices are connected, they may be activated from a remote location to communicate between the remote location and the connected device. It is thought that it will be used in such a way that online processing is performed unattended, and in some cases, offline local processing is performed on-site through humans. Against this background, there has been a demand for the development of a power supply device that can start supplying power to connected devices either by opening or closing the main switch on the power supply device side or by receiving an instruction signal from a remote location.

In addition, even in the case of switching between online and offline mode, if the power is turned on by pressing the main switch by the operator at the site, even though the operator did not intend to do so, There may be an inconvenience in which a disconnection request is issued from a connected device and the power is cut off. This inconvenience may occur, for example, when the program being run is online and remotely started, and the program issues a power-off request. Therefore, there is a risk that a series of tasks may be interrupted or that work products that have been partially created, such as input data and recorded data, may be lost.

[(1)] The present invention was made in view of the problem described in L. It is possible to turn on the power by pressing the main switch on the connected device side, or to turn it on from a remote location by inputting an external signal. To provide a power supply device that allows a connected device to know whether the power is on.

In order to achieve the above objectives, the present invention provides a main switch that instructs the connected device to start supplying power, and a main switch that instructs the connected device to start supplying power, and a main switch that instructs the connected device to start supplying power. A control means that starts power supply and cuts off the power supply to the connected device in response to a power-off request from the connected device, and a control means that starts the power supply by turning on the main switch or inputting an external signal. The present invention is characterized by comprising a storage means for storing the information, and a response means for notifying the connected device of the contents stored in the storage means.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to one drawing.

FIG. 1 shows the main part configuration of the power supply device of this embodiment.

In FIG. 1, 2 is a control unit that performs overall control of the present embodiment, 2 is a power supply, and 3 is a switch control unit that controls opening/closing (on/off) of a power supply 2 to a connected device 8, which will be described later. In addition, 4 is a power connector for connection to the connected device 8;
Reference numeral 5 indicates a receiving unit for receiving an instruction signal (remote power-on signal) instructing power-on to be sent from an external location such as a communication line through a communication means such as a communication line, and 6 indicates that the power can be turned on via the control unit l. This is the main switch. These components 21
6 constitute a power supply device (remote power on/off device) 7. Further, the connection device 8 is a connection device such as a computer, and is connected to the switch control section 3 via the control section 1 and the power supply connector 4.

Next, an example of the control operation of the apparatus of this embodiment will be explained in accordance with the order of the control shown in FIG.

First, it waits for either turning on (closing) the main switch 6 or receiving an instruction signal input from the outside through the receiving section 5 to instruct remote power-on (remote 'IIi source on) (steps Sl, S2).

If the main switch 6 is on, the process moves from step S1 to step S3, and the fact that the main switch 6 is activated is stored in the internal memory (not shown) of the control unit 1. If a remote power-on signal is received, the process moves from step S2 to step S4, and the fact that remote power-on is activated is stored in the internal memory (not shown) of the control unit l. In either case, immediately after the memorization, step S
5 to start supplying power to the connected device 8.
The control section 1 instructs the switch control section 3 to turn on the switch. In response to this instruction, the contacts of the switch control section 3 are closed, the power supply 2 and the connected device 8 are connected via the switch control section 3 and the power supply connector 4, and the connected device 8 is turned on.

Next, the control unit 1 repeats a search (step S7) to see if a request to turn off the power is received from the connected device 8 (step S6) or a request for starting power supply (step S7). When the device asks about the cause for starting power supply, the process moves from step S7 to step S8, reads out the startup information stored in step S3 or S4 from the internal memory, and uses this stored information to switch the main switch 6. Detects which factor, external or external, started supplying power, and replies to the connected device 8 with the detected factor.
Return to step S6 again and repeat the same loop (step S6~
Returning to S8), the connected device that has received or accepted the cause performs the prescribed processing operation according to the cause, and if the main switch is turned on, it will not output a disconnection request after the prescribed processing, but if it is due to an external signal, it will not output a disconnection request. After predetermined processing, a disconnection request signal is output. In step S6, if a request to turn off the power is detected, the process moves to step S9, where the contact of the switch control unit 3 is opened to cut off the power supply to the connected device 8, and the power is turned on at the start. Returning to the first processing step (step Sl) of waiting for a request.

This allows for example '+h' to be pressed by pressing the main switch.
When the power is turned on, it is possible to not issue a request to turn off the power even if one task is completed, and for example, for connected equipment that performs various tasks based on programs loaded on a computer, etc., when the power is turned off, By knowing whether the power is turned on by the main switch or by an external signal, it is possible to select a program for processing work and automatically branch to the selected program. It also made it possible to construct information processing systems.

[Effects] As explained above, according to the present invention, the connected device can determine whether power supply is started by the main switch or by a remote power-on signal from the outside. The desired purpose is achieved, the programs etc. on the connected device side can be flexibly constructed, and the operability of the entire system can be expected to be improved.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of the device of this embodiment, and FIG. 2 is a flowchart showing the control operation of the device of this embodiment shown in FIG. ■... Control unit, 2... Power supply, 3... Switch control unit, 4... Power connector, 5... Receiving unit, 6... Main switch, 7... Power supply device, 8 ...Connected equipment. r-------------1
Figure 1

Claims (1)

[Scope of Claims] A main switch that instructs to start supplying power to a connected device, and starts supplying power to the connected device in response to activation of either turning on the main switch or inputting an external signal. death,
a control means for cutting off the power supply to the connected device in response to a power-off request from the connected device; and a control means that determines whether the power supply is started by turning on the main switch or inputting the external signal. A power supply device comprising: storage means for storing information; and response means for notifying the connected device of the content stored in the storage means.