JPH0281217A - Processor for turning off of power source of information processor - Google Patents

Abstract

PURPOSE:To guarantee data by saving the data of a main memory in an external storage device, when a service interruption is detected, and also, closing a program being on open and turning OFF a main power source so as to be programmable. CONSTITUTION:When a service interruption is generated and several seconds elapse, a P-OFF signal for showing a fact of being in a service interruption is sent to a register 4 through a gate 3 from a no-break power unit 9 and held. The register 4 issued a power source OFF interruption to a control part 1 through an OR gate 8, and when information is stored in a disk 17, the control part 1 executes a program until its store is ended, and thereafter, returns the program to a storage device such as a hard disk, etc., and sends a power source OFF command signal to a power source unit 2. In such a way, when a service interruption is generated, the title processor operates in the same way as the time when an operator ends a daily work and disconnects a power source, and data can be guaranteed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a power-off processing device for an information processing apparatus equipped with an external storage device such as a magnetic disk device, an optical disk device, a magneto-optical disk device, or the like.

[Prior art] In a conventional information processing device, a power off device is
A power switch that forcibly turns on and off information processing equipment (
(main power switch) and a power-off command switch (soft power switch) that powers down after saving the contents of the main memory to a disk device or the like.

[Problems to be Solved by the Invention] In conventional power-off devices, even if an uninterruptible power supply is used as an AC power supply source for an information processing device, the power supply time of the uninterruptible power supply is limited; There is a problem in that data cannot be guaranteed after the power supply time has elapsed, and complete data guarantee cannot be performed.

An object of the present invention is to provide a power-off device that completely guarantees data when a power outage occurs, reduces the load on an uninterruptible power supply, and enables unmanned operation of an information processing device.

[! ! Means for Solving the Problem] The present invention supplies AC power when a power outage occurs, and when a predetermined time has elapsed since the power outage occurs, a P-OFF signal indicating that a power outage is occurring is provided. When the uninterruptible power supply generates the The control unit has a control unit that controls the

[Function] The present invention supplies AC power when a power outage occurs, and also generates a P-OFF signal indicating that a power outage is occurring when a predetermined time has elapsed since the power outage occurred. An uninterruptible power supply and a control unit that, when the P-OFF signal is detected, performs a shutdown process that saves data in the main memory to an external storage device and closes open programs, and programmably turns off the main power supply. Therefore, when a power outage occurs, the operation is the same as when the operator finishes the task of -1 and turns off the power to the information processing device, making it possible to guarantee data.

[Example] FIG. 1 is a block diagram showing one embodiment of the present invention.

The information processing device 20 is the main control unit of the information processing device that can be programmably powered off, and is an MPU.
, ROM, RAM, l10IF, etc., a power supply unit 2 of the information processing device ff120, and a receiving unit (waveform shaping buffer gate) that receives a power off command from the outside.
3, a register 4 that holds the output of the receiver 3, and a soft power switch 5 that instructs the information processing device 20 to be powered off.

When the soft power switch 5 is turned on, the power is turned on. When it is turned off, the soft power switch 5 notifies the control unit l of the fact that it has been turned off by an interrupt, recognizes that the switch 5 is turned off by a program, saves various data, and turns off the power. This is the switch that issues the power off command to the unit 2.

The information processing device 20 also includes a pull-up resistor 6 of the soft power switch 5, a register 7 that holds the state of the soft power switch 5, and an output of the register 4 and the register 7.
It has an OR gate 8 that ORs the output of.

The uninterruptible power supply 9 is an uninterruptible power supply that receives alternating current power and outputs alternating current power from a built-in battery when the alternating current power fails, for a predetermined period of time (for example, several seconds) after the power failure occurs. This is a device that generates a P-OFF signal indicating that a power outage is occurring when a power outage has elapsed.

In addition, the main power switch 13 for the power supply unit 2 is
This switch is always on in normal use and is set so that the state of the soft switch 5 operates effectively. In addition, an AC cord 12, 14, a display device 15 such as a CRT, a keyboard, a pointing device 16, an external storage device 17 such as an optical disk, an image scanner 18, and an image printer 19 are provided. .

Next, the operation of the above embodiment will be explained.

FIG. 2 is a flowchart showing the operation of the above embodiment.

First, when the soft power switch 5 is turned on, the power of the information processing device 20 is turned on (Sl), and system startup processing is started (S2). That is, the program in the hard disk is loaded into the main memory, and the hardware is The system is initialized and started up, and the operator performs various processes via the CRT 15 and keyboard 16 (S3 and S4). For example, the image reader 1
The image read from 8 is displayed on the CRT 15, and the keyboard and pointing device 16 are operated to process it into arbitrary information and save it on the optical disk 17.

Assume that a power outage occurs while the above work is being performed (S6).

In this case, in the conventional information processing apparatus, the system goes down in that state, and the processed information is not guaranteed and disappears. Furthermore, in the case where a conventional information processing device is simply equipped with an uninterruptible power supply, if the power outage lasts for a long time, the built-in battery will be exhausted and the system will go down in the same way as a power outage.

In the case of the above embodiment, when a power outage occurs and several seconds have passed, a signal P-OFF indicating that a power outage is occurring is sent from the uninterruptible power supply 9 to the register 4 via the gate 3 (SS
), retained. Then, the register 4 issues a power-off interrupt to the control unit l via the OR gate 8, and the control unit l performs a programmable power shutdown process (S
7), Turn off the power (38).

Here, the above-mentioned power shutdown process is a process that guarantees the integrity of the data and programs in the control unit 1. For example, if information is being stored on the disk 17, the program is executed until the storage is completed, and then , the program is returned to a storage device such as a hard disk, and a power-off command signal is sent to the power supply unit 2.

Therefore, in any process of any kind,
The control unit 1 can perform processing in the same way as the everyday turning off operation of the soft power switch 5 without terminating the processing midway. Therefore, even if the power outage lasts for a long time and the uninterruptible power supply 9 is exhausted, the process for system down is completed before that happens.

FIG. 3 is a diagram showing another embodiment of the present invention.

In this example, the information processing bag is 21.22°23.24°.
are connected to each other, and the information processing devices 21 to 24 are
Each is a device similar to the information processing bag ff120.

In addition, a P-OFF signal transmitting means for transmitting a P-OFF signal indicating that a power outage is occurring from one information processing device to the remaining information processing devices is installed in each information processing bag 21 to 24.
Each of them has.

Here, assuming that the information processing device 21 is an administrator device, if a power outage occurs, other nearby devices 22.23.2
4, issues a TEP-OFF signal. In this case, even if the operator of the information processing bag 2t22.23.24 forgets to turn off the power, the power can be turned off normally, and therefore, it becomes possible to turn off the power of the entire network system when the network is constructed.

Furthermore, if a P-OFF signal is issued from a device with a built-in timer, it becomes possible to automate the power on and off, and it can also be used for communication equipment and the like, reducing M to seven.

[Effects of the Invention] According to the present invention, when a power outage occurs, the operation is the same as when the operator finishes the day's work and turns off the power to the information processing device, and the data guarantee is valid. play.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention. FIG. 2 is a flowchart showing the operation of the above embodiment. FIG. 3 is a block diagram showing another embodiment of the invention. l...control unit, 2...power supply unit, 5...soft power switch, 9...uninterruptible power supply. 13...Main power switch. 20.21.22.23.24... Information processing device. Patent applicant Arata Kubo for Canon Co., Ltd.

Claims (2)

[Claims] (1) In a power-off processing device for an information processing device that can programmably turn off the power, it supplies AC power when a power outage occurs, and when a predetermined period of time has passed after the power outage occurs, An uninterruptible power supply that generates a P-OFF signal indicating that a power outage is occurring; When the above P-OFF signal is detected, it saves the data in the main memory to an external storage device and closes any open programs. Perform the shutdown process to
A power-off processing device for an information processing device, comprising: a control unit that programmably turns off a main power source; (2) In a power-off processing device of an information processing device that can programmably turn off the power, a P-OFF signal is sent from one information processing device to another information processing device to indicate that a power outage is occurring. - OFF signal transmitting means; when detecting the P-OFF signal, performs a shutdown process of saving main memory data to an external storage device and closing open programs;
A power-off processing device for an information processing device, comprising: a control unit that programmably turns off a main power source;