JPH10149232A - System processing request system for power-off time - Google Patents

Abstract

PROBLEM TO BE SOLVED: To call a specific process routine at a user's request when a power- OFF process is performed, and executing a system process right before the power source is turned off by actuating software when a specific process request is made in response to a power-switch-OFF report, and turning off the power source after a process is completed. SOLUTION: A power source par t 3 is switched to a mode wherein the power source is turned off by software executed by a CPU 1. A ROM 4 stores the software which operates when the power source is turned OFF with a power switch 2 pressed. When the power switch 2 is pressed, an interruption to the CPU 1 is initiated through a power source part 3 and the CPU 1 accepts the interruption and performs the system process stored in the ROM 4 at a user's request for system process execution. Then a process for power-OFF time stored in the ROM 4 is started.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to power supply control, and more particularly to a control method when an information processing apparatus is turned off.

[0002]

2. Description of the Related Art As a conventional power supply control method of an information processing apparatus, for example, Japanese Patent Application Laid-Open No. Hei 2-236708 discloses that an interrupt is issued to a central processing unit when a power supply is turned off, a process being executed is interrupted, and the By reading the stored address when the power is turned on and executing the processing from that part, the continuity of the processing at each power-on is automatically performed without considering the operation to restart the processing on the application side. There has been proposed an electronic calculation processing system capable of ensuring the above. In addition, the above publication discloses a method of performing a predetermined process such as saving a state of an information processing apparatus before power-off, such as setting a flag at a place where the next process is to be performed before power-off. Introduced as technology.

[0003]

However, in the above conventional control method, when the power is turned off, only the state of the information processing apparatus at that time is stored, and when the power is turned on, the stored address is automatically obtained from the stored address. Therefore, there is a problem that when the power is turned off, a desired system process cannot be executed by the user's selection.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above-mentioned problems, and has as its object to call a predetermined processing routine at the request of a user at the time of power-off processing, and execute system processing immediately before power-off. It is to provide a control method which makes it possible to realize the above.

[0005]

In order to achieve the above object, according to the present invention, when it is detected that a predetermined processing request has been issued when a power switch is turned off, the CPU executes the processing. In response to the request, the software of the process is activated, and after the execution of the process is completed, the power is turned off by software control.

According to the present invention, when it is detected that a predetermined processing request key of the keyboard device is pressed, the C key is detected.
The PU executes the above processing.

Further, the present invention provides a CP for performing various arithmetic processing.
U, a power supply unit controlled by software, a power switch, and storage means for storing software for performing processing when power is turned off, and when the power switch is turned off, this is notified to the CPU. At the same time when the power switch is turned off, when it is detected that a predetermined system processing request has been made, the software for performing a power-off process stored in the storage unit is started and executed. Features.

[0008]

Embodiments of the present invention will be described below. According to a preferred embodiment of the present invention, a CPU (1 in FIG. 1) for performing various arithmetic processing, a power supply unit (3 in FIG. 1) controlled by software, a power switch (2 in FIG. 1), Storage means (4 in FIG. 1) for storing software for performing a process at the time of disconnection. When the power switch is turned off, this is notified to the CPU by an interrupt or the like. When the system processing request key is detected as being pressed, the software for processing when the power is turned off stored in the storage means (4 in FIG. 1) is activated and executed.

As described above, in the embodiment of the present invention, when the power-off process of the information processing apparatus is performed, the system processing software stored in the storage means (4 in FIG. 1) such as a ROM is stored in the power supply. By providing a mechanism for activating when the switch and the keyboard are simultaneously pressed, system processing can be easily performed at the time of power-off in response to a user request.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a diagram showing the configuration of an embodiment of the present invention. Referring to FIG. 1, an information processing apparatus according to an embodiment of the present invention includes a CPU (Central Processing Unit) 1, a power switch 2, a power supply unit 3, a ROM (Read Only Memory) 4, and a RAM (Read Only Memory). A random access memory 5, a keyboard device 6, a CPU bus 7, and a power supply line (power supply line) 8 to each device are provided.

The power supply unit 3 is turned on by the power switch 2, and turns on the power of each device via the power supply line 8 for the entire apparatus.

After the power is turned on, it operates by software (program) stored in the ROM 4.

In one embodiment of the present invention, the power supply unit 3
The mode is switched to a power-off mode by software executed by the CPU 1, and the ROM 4 stores software (program) that operates when the power switch 2 is pressed and the power is turned off.

When the power switch 2 is depressed, the power supply 3
(NMI (non-maskable interrupt) or SMI (software maskable interrupt)) is raised to CPU 1 via CPU, and CPU 1 accepts the interrupt and returns to RO.
The power-off process stored in M4 is started.

Next, the operation of the embodiment of the present invention will be described in detail with reference to the flowchart of FIG.

FIG. 2 shows that when the power switch 2 is depressed,
6 is a flowchart showing a processing flow for controlling power supply by software (system processing software stored in ROM 4).

When the power switch 2 is pressed, the pressed key is obtained for the keys of the keyboard device at the same time as the power switch 2 is pressed (step 12).
If the pressed key is a key for requesting the system processing (YES in step 13), it is determined that the user has requested the execution of the system processing.
Executes the system processing stored in (1)
5) Then, a power-off process is executed (step 1).
6). As a result, the power of the system is turned off by the program in the ROM 4.

On the other hand, if it is determined in step 13 that the request key of the system processing has been pressed, the operating system (O
S) It is determined whether or not to execute a shutdown process (step 14). If it is not necessary to shut down the OS, the system is turned off by a power-off process (step 16).

If the OS needs to be shut down, the program in the ROM 4 calls the shutdown processing of the OS shutdown 18 and executes the shutdown (step 18). Turn off the power (Step 1
9).

[0021]

As described above, according to the present invention,
When the power switch is pressed, the system processing can be executed in response to a user request.

The reason is that, in the present invention, by combining the power switch and the keyboard, the user's request is raised to the CPU, and the system processing program stored in the storage means in the ROM or the like is executed. It depends.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a processing flow according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CPU 2 Power switch 3 Power supply part 4 ROM 5 RAM 6 Keyboard device 7 CPU bus 8 Power supply

Claims (4)

[Claims] 1. Upon receiving a notification that a power switch is turned off,
When it is detected that a predetermined processing request has been issued, C
A system processing request method at power-off, wherein the PU activates software for the processing in response to the processing request, and turns off the power under software control after the execution of the processing is completed. 2. The method according to claim 1, wherein the CPU executes the processing when it is detected that a predetermined processing request key of a keyboard device is pressed upon receiving a notification that the power switch is turned off. 2. The system processing request method according to claim 1, wherein the power supply is turned off. 3. A power supply unit controlled by software, a power supply unit controlled by software, a power switch, and storage means for storing software for performing processing when power is turned off, wherein the power switch is turned off. At this time, the CPU notifies the CPU that the power switch is turned off, and when it is detected that a predetermined system processing request has been made, performs the power-off processing stored in the storage unit. A system processing request method at the time of power interruption, wherein software is started and executed. 4. When information of a pressed key of a keyboard is obtained, and the pressed key is a predetermined key for instructing a system processing request from a user, the information stored in the storage means when power is turned off is stored. 4. The system processing request method at the time of power interruption according to claim 3, wherein software for performing the processing is started and executed.