JPH05265602A - Power management control device - Google Patents

Abstract

PURPOSE:To obtain a power management control device capable of setting up an optimum power supply OFF time in each application program, effectively functioning a power management mechanism and attaining a hot stand-by function without adding a dedicated hardware mechanism. CONSTITUTION:A monitoring program 23 monitors the start/stop of an application program 21 and I/O instruction issuing status to a device connected to the power management mechanism 3, stores the monitored results in a management table 24 and controls the mechanism 3 in accordance with the using status of a peripheral device based upon the program 21. A hot stand-by control program 22 is driven by an interruption from the mechanism 3 and saves system information to hard disk 4. When a system power supply is ON, the program 22 loads the saved system information to a main storage device and starts hot sand-by.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power management control device for a personal computer.

[0002]

2. Description of the Related Art Conventionally, when a power management mechanism is controlled by a personal computer (hereinafter referred to as a PC) having a power management mechanism, the time until the power is cut off for each device previously connected to the power management mechanism. The user had to set it.
In addition, in order to perform hot standby control in which the power is temporarily turned off while the system is operating and the system is restarted after a while, a dedicated hardware mechanism for realizing this is required.

[0003]

However, in the above-mentioned conventional power management control method, since the time until power-off is uniquely set, it is difficult to set the optimum time for each application program. Further, since the time is set uniquely, there is a problem that the power management mechanism cannot be used to the maximum extent, and further, dedicated hardware is required for performing hot standby control.

The present invention has been made in order to solve the problems in the above-mentioned conventional example, and it is possible to set the optimum power-off time for each application program and to make the power management mechanism function more effectively. It is an object of the present invention to provide a power management control device capable of realizing a hot standby function without adding a dedicated hardware mechanism.

[0005]

In order to achieve the above object, a power management control device according to the present invention monitors the usage status of a peripheral device in an application program loaded in a main storage device and monitors the usage status. Accordingly, there are provided a first control means for controlling the power management mechanism, and a second control means for saving the system information in the hard disk based on the information obtained by the first control means to control the hot standby of the system. It is characterized by having.

[0006]

In the present invention, the first control means controls the power management mechanism in accordance with the usage status of the peripheral device in the application program to set the optimum power off time for each application program. The management mechanism is caused to function more effectively, and the second control means saves the system information in the hard disk based on the information obtained by the first control means to control the hot standby of the system.

[0007]

Next, the present invention will be described with reference to the drawings.

FIG. 1 shows the hardware configuration of an embodiment of the present invention. In the figure, a hard disk device 4, a floppy device 5, a printer 6 and a CRT 7 are connected to a CPU 1, a main storage device 2, a memory card 8 and a ROM 9 through a power management mechanism 3.

Here, the power management mechanism 3
Can set a power ON / OFF function for each connected device and an arbitrary time until the power is turned off, and after the set time has elapsed, the power of the corresponding device is turned off. Further, the power management mechanism 3 requires that the connected device has an I / O request, and the device is the power source OF.
In the F state, the power is automatically turned on. further,
You can also power off the system.

Next, FIG. 2 is a diagram showing a main part for carrying out the present invention. Monitoring program 2 serving as first control means
3 always monitors activation / termination of the application program 21 and the I / O issuance state of the device connected to the power management mechanism 3, and stores the monitoring result in the management table 24 having the configuration shown in FIG. .. Further, the monitoring program 23 has a management table 24 when the application program 21 is activated.
Is set, and the power-off time of the corresponding application program is set in the power management mechanism 3.

The hot standby control program 22, which is the second control means, is stored in the ROM 9 and starts its processing when the system power is turned on and by an interrupt from the power management mechanism 3, and when the system power is turned on. , Hot standby is operated, and when an interrupt is generated from the power management mechanism 3, the system information is saved and the system power is turned off.

FIG. 5 is a flowchart of the monitoring program 23. In step S51, it is determined whether the application program 21 is started or terminated, and whether the I / O monitoring process or the management table 24 update process is performed is determined.

Next, the case of performing the I / O monitoring process will be described with reference to the flowchart. Step S52
Searches the management table 24 shown in FIG. 3 using the program name of the activated application program 21 as a key. When the program names match, the power-off time associated with it is read. If they do not match, the default value specified by the user is used.

In step S53, the power OFF time obtained in step S52 is set in the power management mechanism 3. In step S54, I / O for the device connected to the power management mechanism 3 from the application program 21 is performed.
O is monitored and the optimum power OFF time is calculated.

On the other hand, step S55 is the application program 2
At the end of 1, the optimum power supply OF calculated in step S54
The management table 24 is updated in F hours. At this time, if the application program 21 does not exist in the management table 24, it is added to the management table 24. In this way
It is always optimized for the user's usage environment.

FIG. 4 is a flowchart of the hot standby control program. In step S42, it is determined whether the system is activated by turning on the power or an interrupt of the power management mechanism 3, and it is determined whether hot standby activation processing or system information saving processing is performed.

Next, the case of performing the hot standby start-up process will be described with reference to the flowchart. A step S43 initializes the system. In step S44, it is determined whether or not the system initialization designated in step S43 is hot standby activation. If it is not hot standby activation, control is transferred to step S48, OS is activated, and the program is terminated. If it is hot standby activation, control is transferred to step S45.

A step S45 expands the contents of the main storage device 2 saved in the hard disk into the main storage device 2. A step S46 turns off the hot standby activation flag, restores the saved registers, and shifts the control to the step S47. A step S47 restarts the system.

Next, regarding the saving processing of the system information,
A description will be given along the flowchart. Step S49 is
The power management mechanism 3 is accessed and the power supply O of all peripheral devices managed by the power management mechanism 3 is turned on.
Read N / OFF status. In step S4A, from the state read in step S49, all devices are powered off.
Whether or not it is in the F state is determined, and if any one of the peripheral devices is in the power-on state, the program ends.

If all are in the power-off state, the system information saving process is continued. A step S4B saves the contents of the main storage device 2 as they are to the system information save area in the hard disk shown in FIG. Step S4
In C, similar to step S4B, the contents of the register immediately before the control is transferred to the hot standby control program 22 are saved in the system information save area.

In step S4D, the system power is turned on.
At this time, a flag indicating that hot standby is performed is set on the CMOS included in the system. After completing the series of evacuation processing, in step S4E, the system power supply O
The I / O command for FF is issued to the power management mechanism 3.

[0022]

As described above, according to the present invention, the power management function is set by setting the optimum power-off time according to the usage status of the peripheral device for each application program and automatically executing it. It has the effect that it can function more effectively and that the user can use it without being aware of the power management function. Furthermore, the hot standby function can be realized without adding a dedicated hardware mechanism.

[Brief description of drawings]

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

FIG. 2 is a configuration diagram of main modules of the present invention.

FIG. 3 is a content diagram of a management table 24 in FIG.

FIG. 4 is a flowchart of a hot standby control program 22 of FIG.

5 is a flowchart of a monitoring program 23 of FIG.

6 is a configuration diagram of a hard disk 4 of FIG.

[Explanation of symbols]

 1 CPU 2 Main Storage Device 3 Power Generation Mechanism 4 Hard Disk 5 Floppy Device 6 Printer 7 CRT 8 Memory Card 9 ROM

Claims (1)

[Claims] 1. In a personal computer having a power management mechanism for turning on / off the power of a connected device, the usage state of a peripheral device in an application program loaded into a main storage device is monitored, and the power consumption is changed according to the usage state. A first control means for controlling the management mechanism; and a second control means for saving system information on a hard disk based on the information obtained by the first control means and controlling hot standby of the system. Characteristic power management control device.