JP3453467B2 - Information processing apparatus and power management function calling method of the information processing apparatus - Google Patents

Description

Detailed Description of the Invention

[0001]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention relates to an information processing apparatus and a power management function calling method for the information processing apparatus,
More specifically, the present invention relates to an information processing apparatus such as a computer and a word processor having a power management function in an operating system and a method for calling the power management function of the information processing apparatus.

[0002]

2. Description of the Related Art Conventionally, a power management function in an information processing apparatus of this type performs a required operation according to an input of an instruction such as suspend or resume, but in this case, the resume is required. Resume operation is performed even for devices that do not have this, and useless operation occurs. For this reason, some operating systems (hereinafter referred to as "OS") manage the state of the device and instruct the device driver to perform the resume operation only when the resume is necessary. There is.

[0003]

However, in the above-mentioned conventional example, when the device driver is called, whether or not the function requires power-up of the device is determined by the OS. The features that require a device depend on the device. Therefore, the unnecessary power-up function is called, or the power-up function is not called even though the power-up is necessary, and the device driver handles it, which complicates the development of a program for that. As a result, the product cost of the device is high.

The present invention has been made in view of the above problems, and provides an information processing apparatus having a power management function capable of powering up when necessary and a method of calling the power management function of the information processing apparatus. The purpose is to provide.

[0005]

In order to achieve the above object, the invention according to claim 1 of the present invention incorporates an operating system for activating a plurality of devices by respective device drivers and has a resume function. In the information processing apparatus, based on a call request from the device driver in the resume function, the first determination means determines whether or not the device corresponding to the device driver is in the power-up state, and the first determination means. If it is determined that the device is not in the power-up state, the second determination unit that determines whether the device needs to be powered up, and the device needs to be powered up by the second determination unit. If it is determined that the power-up of the device to the device driver After calling capability, call the requested device driver, the first determining means by the device is powered up the device or optionally the second determining means is determined to be power-up condition If it is determined that the device driver is not required, the calling device calls the requested device driver.

[0006] The invention of claim 2, wherein is the invention of claim 1, wherein the information each of the plurality of devices indicate whether the power-up state,
It is characterized by further comprising storage means for respectively storing a device driver that requires power-up of each of the plurality of devices. Further, in the invention according to claim 3 of the present invention, in the power management function calling method of an information processing apparatus having a built-in operating system for activating a plurality of devices by respective device drivers, the resume function is provided. A first determination step of determining whether or not the device corresponding to the device driver is in a power-up state based on the device driver call request in
A second determining step of determining whether or not the device needs to be powered up when it is determined by the first determining step that the device is not in a power-up state;
If it is determined by the second determination step that the device needs to be powered up, the device driver
After calling the power-up function of the device, calling the requested device driver, by the first case the device by determining step it is determined to be power-up state or the second determination step If it is determined that the device does not need to be powered up,
And a calling step for calling the requested device driver .

According to the first aspect of the invention, based on the call request of the device driver in the resume function, it is determined whether or not the device corresponding to the device driver is in the power-up state, and the device is in the power-up state. If not, it is determined whether the device needs to be powered up, and if it is determined that the device needs to be powered up, the device driver
After calling power-up function of the device driver, calling the requested device driver, if the device is determined to be power-up or when the device is determined to be powered up is not required, the requested call the device driver.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block configuration diagram of a computer as an embodiment of an information processing apparatus according to the present invention. The computer includes a suspend / resume switch 1 for requesting a suspend process and a resume process.
A mouse 2 for inputting predetermined information, a hard disk 3 and a floppy disk 4 for recording the input information, a display device 5 for outputting and displaying the input information and calculation results, and each of these devices (mouse 2, hard disk 3, floppy disk). disk 4 and the display device 5) is powered up
The memory 6 stores information indicating whether or not the device is required to be powered up, and registers a device driver entry for activating each of these devices, and a CPU 7 that controls each of these components. ing.

FIG. 2 is a flow chart showing an initialization procedure of a floppy disk driver for activating a floppy disk as a device among the device drivers.

[0011] The driver functions of the said device driver to start the step S1 the device driver is <br/> put out call. Then power up the device in step S2.
The entry of the driver function (device power-up function) of the device driver required for
6 is stored in the first predetermined area inside, and the subsequent step S3
The unnecessary device to power up the device in
Driver driver function is stored in a second predetermined area of the internal memory 6, then performs other initialization in step S4, the process ends.

FIG. 3 is a flow chart showing the procedure for calling the device driver (floppy disk driver), in which the suspend / resume switch 1 is depressed.
The operation procedure is shown in the case where the resume request is made to the computer which is already in the suspended state and the resume is completed, and thereafter the floppy disk 4 is accessed.

In step S11, a device driver call request is issued, and in the following step S12, it is determined whether or not the power is on. Since the floppy disk 4 has been suspended, the answer at step S 12 is negative (No), and the then step S13 power up the determines whether necessary. Then, in order to access the floppy disk 4, the answer to step S13 is performed affirmative (Yes). Therefore, the Shi call to power up function of the floppy disk 4 to the device drive, to access the floppy disk 4. And after this step S
In response to the device driver call request made in step 11, the device driver is called (step S
15) End the process.

On the other hand, if it is determined in step S12 that the device is in the power-up state, or if it is determined in step S13 that the power-up is not required, the process directly proceeds to step S15 and the device driver corresponding to the device driver call request is selected. The call processing ends.

The present invention is not limited to the above-mentioned embodiments, and can be modified within the scope of the invention.
Further, in the above embodiment, the case where the floppy disk is driven by the device driver has been described, but the same can be applied to the case where it is desired to power up a specific function of another device such as a hard disk or a display device. Further, although a computer is used as the information processing device in the above-described embodiment, any information processing device may be used as long as it is equipped with an operating system that can support a plurality of devices by a device driver.
It goes without saying that the same can be applied to word processors and the like.

[0016]

As described in detail above, according to the present invention, unnecessary devices are not powered up, so that the resume process can be speeded up and power consumption can be suppressed.

Further, since the device function requiring power-up is surely powered up, the development of a device driver compatible with power management is facilitated, and the device driver can be simplified, and the possibility of bug occurrence is avoided as much as possible. can do.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of a computer as an embodiment of an information processing apparatus according to the present invention.

FIG. 2 is a flowchart showing an initialization procedure of a device driver.

FIG. 3 is a flowchart showing a power management function calling method according to the present invention.

[Explanation of symbols]

1 Suspend / Resume Switch 2 Mouse (Device) 3 Hard Disk (Device) 4 Floppy (registered trademark) Disk (Device) 5 Display Device (Device) 6 Memory (Storage Means ) 7 CPU (First and Second Judgment Means, Call) means)

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G06F 1/32 G06F 13/10 310 G06F 13/10 330

Claims (3)

(57) [Claims] 1. An information processing apparatus having an operating system for activating a plurality of devices by respective device drivers and having a resume function, wherein the device driver is called in the resume function.
Then , based on the request, a first determination unit that determines whether the device corresponding to the device driver is in the power-up state, and the first determination unit determines that the device is not in the power-up state. A second determining means for determining whether or not the device needs to be powered up, and the device driver if the second determining means determines that the device needs to be powered up.
After calling the power-up function of the device, calling the requested device driver, by the first case the device is determined to be powered up by the determining means or said second determining means If it is determined that the device does not need to be powered up,
An information processing apparatus comprising: a calling unit that calls the requested device driver. 2. A husband and information indicating whether each of the plurality of devices are powered up, and said plurality of devices, each power-up the necessary device drivers of
The information processing apparatus according to claim 1, further comprising storage means for storing each . 3. A method of calling a power management function of an information processing apparatus, comprising an operating system for activating a plurality of devices by respective device drivers, and having a resume function, wherein the device driver is called in the resume function.
Then , based on the request, a first determination step of determining whether or not the device corresponding to the device driver is in the power-up state, and the case where it is determined that the device is not in the power-up state by the first determination step A second determination step of determining whether or not the device needs to be powered up, and the device driver if it is determined by the second determination step that the device has to be powered up.
After calling the power-up function of the device, calling the requested device driver, by the first case the device by determining step it is determined to be power-up state or the second determination step If it is determined that the device does not need to be powered up,
And a calling step for calling the requested device driver.