JPH06289949A - Information processing equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] Regarding an information processing device, it prevents the resume function from being inadvertently activated and the input / output data being lost, and in particular the safety and reliability of the data input / output via the network. Performance is improved and power consumption is reduced even when the resume function does not work. [Structure] When a restart operation is instructed, the access status from the input / output device group is monitored. If there is an access, control is performed so that the resume operation is performed after the access is completed. When an access is generated from the input / output device group during the resume operation, it responds to the input / output device that the resume operation is in progress and does not accept the next access. Therefore, the resume operation is executed without any access from the input / output device group. As a result, the resume function prevents the input / output data from being lost, and in particular, the safety and reliability of the data input / output via the network is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing device, and more particularly to an information processing device such as a personal computer or a workstation which can reduce power consumption.

[0002]

2. Description of the Related Art In recent years, information processing devices such as personal computers (PCs) and workstations (WSs) used for office work in office work have been reduced in size and weight. Those that operate by driving have been commercialized. From such a trend, there is a demand for WS to operate on a battery, and its commercialization is under consideration.

In an information processing apparatus that operates on a battery, reduction of power consumption by many power management controls has been studied in order to maximize the life of the battery. For example, in Japanese Unexamined Patent Publication No. 2-294760, an auto power-off unit that automatically cuts off the power when data is not input from the key input unit for a predetermined period is provided to improve the power saving effect, thereby reducing the battery life time. An information processing apparatus has been proposed that lengthens the time. That is, this information processing apparatus has a resume function of saving the display data in the backup storage unit before the power is turned off by the auto power-off unit and displaying the display data again when the power is turned on again. There is.

[0004]

However, the above-mentioned conventional information processing apparatus (especially PC) is mainly used as a stand-alone type, and the resume function is provided only in consideration of the low power consumption of the apparatus. Therefore, for example, when data is input / output through the network in the information processing apparatus connected to the network and the data is not input from the key input unit, the resume function is There is a problem that the data that is input and output via the network may be damaged if it is started.

Even when the resume function is operating, a small amount of power is consumed to hold display data and the like. Therefore, when the remaining capacity of the battery is extremely small, the resume function is used. There is a problem that the battery capacity is exhausted during operation, and display data and the like may be lost.

Further, during normal use, power is supplied to all the constituent parts of the information processing device regardless of whether or not the parts are used, so that, for example, the operator cannot rest his hand at all. However, there is a problem that the degree of consumption of the battery capacity becomes remarkable when the work is performed.

Therefore, an object of the present invention is to solve the above problems and prevent the resume function from being inadvertently activated and the input / output data being lost, and in particular, data input / output via a network. An object of the present invention is to provide an information processing device capable of improving the safety and reliability of the device and reducing the power consumption during normal use.

[0008]

In order to achieve the above-mentioned object, the first aspect of the present invention provides an access monitor for constantly detecting the presence / absence of data input / output to / from an input / output device, and And a power saving control unit for stopping the power supply to the input / output device, which is detected not to input / output data.

Further, according to a second aspect of the present invention, the display data is saved in the backup storage unit, the power supply to each unit of the apparatus main body is cut off, and when the power is turned on again, the display data is restored. In an information processing apparatus having a resume function for displaying, the presence or absence of the data input / output is confirmed by the access monitoring unit when the resume function is activated, and the data input / output being executed is completed and the subsequent data The configuration is such that a resume control unit for canceling input / output is provided.

Further, according to a third aspect of the present invention, a battery monitoring unit for outputting a battery monitoring signal indicating whether or not the remaining capacity of the battery has reached a predetermined capacity, and the resume function is activated, When the remaining capacity of the battery has reached a predetermined capacity, it is resumed,
When the predetermined capacity is not reached, the power supply control and supply unit that shifts the state of the apparatus main body to the shutdown state is provided.

[0011]

The operation based on the above configuration will be described.

That is, in the invention according to claim 1 of the present invention, the access monitor for constantly detecting the presence / absence of data input / output to / from the input / output device, and the data input / output by the access monitor are not performed. The power saving control unit for stopping the power supply to the input / output device in which is detected is possible, so that the power consumption can be reduced to some extent even during normal use.

According to the second aspect of the present invention,
In the information processing apparatus having a resume function of saving display data in a backup storage unit, cutting off power supply to each unit of the apparatus main body, and displaying the display data again when the power is turned on again, the resume function is provided. Since the access monitoring unit confirms the presence / absence of the data input / output when is activated, the resume control unit is configured to complete the data input / output being executed and cancel the subsequent data input / output. The data input / output via the network is not damaged when the resume function is activated, and the safety and reliability of the input / output data can be improved.

According to a third aspect of the present invention, a battery monitoring section for outputting a battery monitoring signal indicating whether or not the remaining capacity of the battery has reached a predetermined capacity, and when the resume function is activated, When the remaining capacity of the battery has reached a predetermined capacity, it is resumed,
When the capacity has not reached the specified level, the system is equipped with a power supply control unit that shifts the state of the main unit to the shutdown state, so when the remaining capacity of the battery is low and the resume function is insufficient. If the remaining capacity of the battery is insufficient and the resume function is not sufficient, the system shuts down all the data in the hard disk drive to shut it down, thereby ensuring the safety and reliability of the input / output data. Can be improved.

[0015]

Embodiments of the information processing apparatus of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a diagram showing a schematic configuration of a first embodiment of an information processing apparatus of the present invention. In the figure, reference numeral 1 is a central processing unit (CPU) that performs the central function of the information processing apparatus, and 2
Control the access to the memory, control the system bus, and resume function (when data input from the key input unit is not detected within a predetermined period, display data is saved in the backup storage unit and power is supplied to each unit of the main unit. A bus memory for controlling (resume control), that is, a function for preventing battery consumption by redisplaying the display data when the power supply is turned on again.
Resume controller, 3 main memory, 4 system bus,
Reference numeral 5 is an expansion board for extended functions, and 6 is a display for controlling the display of the LCD to reduce power consumption such as controlling the backlight.
A power saving control unit, 7 is a display memory, 8 is a display display (LCD), 9 is an input / output / power saving control unit for controlling input / output and reducing power consumption in each input / output device, 10
Is an input / output bus to which each input / output device is connected, 11 is an external input / output device connected to a standard slot of the device, 12 is an internal input / output device incorporated in the device, and 13 is a resume function. This is a resume switch for.

In the information processing apparatus of FIG. 1, when the operator presses the resume switch 13, the current processing information and display information are displayed in the main memory 3 and the display memory 7.
It is backed up in the (backup storage unit) and enters the resume state. That is, the input / output / power saving control unit 9
Presses the resume switch 13
Then, the access status from the expansion board 5, the external input / output device 11, and the built-in input / output device 12, which have the possibility of data input / output, is monitored. When access is being performed from any of the input / output devices, the resume controller 2 is instructed to execute the resume operation after the access is completed, and the access is accepted during the resume operation. The extension board 5, the external input / output device 11, and the built-in input / output device 12 are informed that the resume operation is in progress so that they are not turned off. After the access is prohibited by this, the input / output / power saving control unit 9 and the bus memory / resume control unit 2 back up the information in the main memory 3. The display / power saving control unit 6 performs a backup process of the display data to the display memory 7 in the resume operation. If the capacity of the main memory 3 is sufficient in the information processing apparatus of this embodiment, the display data can be backed up in the main memory 3 by the bus memory / resume control unit 2.

FIG. 2 is a diagram showing an example of the configuration of a network system using the information processing apparatus of FIG. In the figure, 58 is a network such as a LAN for connecting the respective devices,
Reference numeral 59 is the information processing apparatus shown in FIG. 1, and 60 is another desktop information processing apparatus. The network 58 is configured by a cable connection that can be accessed between devices such as a connection with a mainframe (not shown), a connection between a personal computer (PC) and a workstation (WS), and the like.

FIG. 3 is a diagram showing an excerpt of the portion related to the resume function in FIG. 1. The same components as those in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted. In FIG. 3, the bus memory / resume control unit 2 performs a backup process to the main memory 3 by the resume operation based on the access monitoring information from the input / output / power saving control unit 9.
In the WS used in the network environment shown in, the external access via the network (for example, other W
If the resume operation is executed while the internal hard disk is being accessed from S, etc., the access will be interrupted and the reliability of the data will not be guaranteed. Power control unit 9
The access from various inputs / outputs of the expansion board 5, built-in input / output device 12, external input / output device 11, etc. is monitored by.

FIG. 4 is a diagram showing in detail the input / output / power saving control unit in FIG. In the figure, 14 is an information processing device and an input / output device (expansion board 5, built-in input / output device 1
2, a device driver that is an interface of the external input / output device 11), a hard disk device (HDD) 15 that is a file system device,
16 is a network interface
r and 17 are other input / output (I
/ O), 18 is an access monitoring unit that monitors the presence or absence of access from each input / output device, and 19 is a power saving control unit that performs power saving control in battery driving. Normally, an input / output device that constitutes the apparatus is equipped with a device driver 14, which is driver software, and is used as an interface between the information processing apparatus main body and the input / output device. For example, when a SCSI command is executed by the HDD 15, the device driver 14 translates this so that the device can recognize it, and transmits the instruction content to the device. In this embodiment, a function for access monitoring such as issuing a command is added to the device driver 14. The access monitoring unit 18 in the power saving control unit 19 recognizes the presence / absence of access from each input / output device by a command issued from the device driver 14, and the power saving control unit 19
Operates so as to stop the power supply to the input / output which is not accessed. As described above, the device driver 14 finely monitors the access status of each input / output and controls the power supply, so that the power consumption can be reduced.

Next, the control of the backup power supply to the memory after the resume activation by the built-in battery will be described.

FIG. 5 is a diagram showing an extracted portion of the power supply control in the second embodiment of the information processing system of the invention.
The same components as those in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted. Reference numeral 44 is a power supply control supply unit for controlling the supply of backup power supply in the resume operation, and 45.
Is a power supply start signal for memory backup which instructs the power supply for backup required to hold the data to be saved in the memory by activating the resume function from the bus memory / resume control unit 2, and 46 is the main A main memory backup power supply line for supplying memory backup power, 47 a display memory backup power supply line for supplying display memory backup power, and 48 a remaining battery capacity. The battery monitoring signal to be monitored, 49 is a battery monitoring signal 4 corresponding to whether or not the remaining capacity of the battery has reached a predetermined capacity.
8 is a battery monitoring unit that outputs 8.

In FIG. 5, the power supply control supply unit 44 receives the instruction to shift to the resume state from the bus memory / resume control unit 2 and supplies the backup power supply only to the main memory 3 and the display memory 7 which hold the data. In addition, the power supply to other circuits is controlled to be stopped. Further, the display / power-saving control unit 6 stops the backlight and the display in response to the display system power-off signal, thereby reducing the power consumption of the battery and extending the operation time. At this time, if the remaining capacity of the battery monitored by the battery monitoring unit 49 has not reached the predetermined capacity and the backup power supply for maintaining the resume state cannot be supplied, the power supply control is performed. The supply unit 44 performs a shutdown operation instead of the resume operation (after saving the data to be saved in an auxiliary storage device such as a hard disk,
Control to stop all power supply).

FIG. 6 is a diagram showing a part related to the power supply control shown in FIG. 5, and the same components as those in FIG. 5 are designated by the same reference numerals and the description thereof will be omitted. Reference numeral 50 denotes an RM register incorporated in the bus memory / resume control unit, in which information regarding the supply of backup power to each memory in the resume operation is set. That is, 51 is an MS bit for the main memory of the RM register 50, and 52 is a VRAM for the display memory of the RM register 50.
Bit 53 is a BA bit that sets the state of the battery.

In FIG. 6, the power supply controller 44 controls the backup power supply to each memory according to the setting information of the MS bit 51 and the VRAM bit 52 transmitted by the memory backup power supply activation signal 45. (The RM register 50 is set by the resume management module described later). Further, the power supply controller 44 always receives the battery monitoring signal 48 from the battery monitor 49 and monitors the information on the remaining capacity of the battery. The battery monitoring unit 49 includes the power supply control unit 44.
Supply the battery monitoring signal 48 to
The BA bit 53 in the M register 50 is set with information as to whether or not there is enough battery remaining capacity to hold the resumed state. It is also possible to notify the operator of the remaining capacity of the battery by turning on or off the LED in correspondence with the setting information of the BA bit 53. In addition, the OS monitors the remaining capacity of the battery by reading the BA bit 53 by the process management module 24 described later, and when the remaining capacity is insufficient, the shutdown operation may be automatically performed instead of the resume operation. it can.

The MS bit 51 and the VRAM
By configuring the bit 52 with a plurality of bits, it is possible to control whether or not the backup power supply is performed for each bank of the main memory 3 and for each plane (screen) of the display memory 7. . Figure 7
7 is a diagram showing another configuration example of the RM register in FIG. 6, the same components as those in FIG. 6 are designated by the same reference numerals, and the description thereof will be omitted. Reference numeral 54 is a bank bit indicating whether or not it is necessary to hold the contents of the memory bank corresponding to the memory bank configuration of the main memory 3 bit by bit.
Reference numeral 5 is a plane bit indicating whether or not it is necessary to hold the content of the display plane corresponding to the number of display planes of the display memory 7 bit by bit, 56 is a CHARGE bit indicating that the battery is being charged, 57 Is a remaining bit indicating the remaining capacity of the battery. In other words, by controlling the power supply for backup by the power supply control supply unit 44 in response to the information indicating the necessity of backup for each bank and plane, power is supplied according to the amount of information to be backed up. Power saving can be achieved.

FIG. 8 is a diagram showing a configuration example of an operating system in the information processing apparatus of the present invention. In the figure, 20 is various application software (AP) for creating / editing texts, spreadsheets, etc., 21 is a network module for controlling the inter-device network, 22 is a hard disk device (HDD) or floppy disk device (FD).
A file system module for controlling the file system such as D), 23 is a terminal module that supports the terminal function of the host mainframe, 2
4 is a process management module that manages various processes operating under the operating system (OS),
Reference numeral 25 is a resume management module that manages the transition to the resume function, and 26 is a kernel that is the main body of the OS.

In the environment of this OS shown in FIG. 8, the size of the kernel is minimized to reduce the disk capacity required for system installation, and
By modularizing and adding the required functions, we are maximizing the user area and enhancing the functions that meet user requests. In this embodiment, the resume function is realized by adding the function modules 21 to 25 including the device driver to the upper layer of the kernel. That is, the network module 21, the file system module 22, the terminal module 23,
Network drivers, HDDs, and FDDs can be created by the device drivers incorporated in the process management module 24.
The resume management module executes software that realizes the resume function while monitoring the access status from the.

FIG. 9 is a diagram showing an example of the configuration of the access monitoring section in FIG. In the figure, reference numeral 36 is a status register for monitoring the status of input / output with each input / output device.
The status register 36 stores a Busy bit 37 indicating that the input / output device is being accessed, and an RM that stores information for making a response indicating that access is prohibited in the resume state to the input / output device. Bit 3
8. A POFF bit indicating that the power supply to the input / output device should be stopped. Further, 40 is an access detection gate for detecting that any input / output device is being accessed from the state of the Busy bit 37, 41 is an access detection signal output from the access detection gate 40, and 42 is the resume switch 13 Is a resume activation signal generation gate that ANDs the resume instruction signal from the access detection signal 41, and 43 is a resume activation signal generated by the resume activation signal generation gate 42.

In FIG. 9, the setting and reading of the status register 36 are performed by device drivers (network module 21, file system module 22, terminal module 2 in FIG. 8) corresponding to each input / output device.
3, which are respectively incorporated in the process management module 24) and the resume management module 25 in FIG. That is, when access is made to any one of the input / output devices, for example, the network, the device driver incorporated in the network module 21 causes the corresponding status register 36 (“Ethe” in FIG. 9).
The Busy bit 37 in the status register (corresponding to r) is set to “1”. When the access is completed, the same device driver sets the Busy bit 37 to “0” again, and then the status register 36 is read to read R.
The information indicated by the M bit 38 (whether or not access is prohibited) is fetched.

Further, the RM bit 38 sets either access prohibition or permission depending on the state of the resume activation signal 43 at the same time as the setting of the Busy bit 37 by the device driver. Then, the resume management module 25 reads the Busy bit 37 and the RM bit 38 corresponding to each input / output device, and manages the resume state based on this. That is, P of the status register 36 corresponding to the input / output device which is not accessed
By setting that the power supply to the input / output device should be stopped by the OFF bit 39, useless power supply can be stopped and power saving can be achieved. The device driver corresponding to each input / output device reads the corresponding status register 36 and detects its RM bit 38. As a result, when the RM bit 38 is set to "1", the device driver recognizes that the information processing apparatus is in the resume transition preparation state and does not accept the next access from each input / output device. . Then, in response to the resume activation signal 42, the bus memory / resume control unit 2 backs up the current processing information and display contents to the main memory 3 and the display memory 7.

The resume switch 13 automatically shifts to the resume state by pressing the resume switch 13 when the operator wants to forcibly turn off the power while retaining the information at the time of termination. When the access is being performed via the resume access signal, the resume activation signal generation gate 41 masks the resume activation signal, so that the transition to the resume state is temporarily waited until the current access is completed.

FIG. 10 is a diagram showing another example of the configuration of the access monitoring section in FIG. 4. In FIG. 9, a status register 36 having a different address is provided for each input / output device, whereas the same address is used. The state register 36 is provided. With this configuration, the logical scale of the hardware such as the address decoding circuit and the register can be further reduced, but the device driver corresponding to each input / output device and the resume management module 25 can access the status register 36. , Must be arbitrated by the process management module 24.

FIG. 11 is a diagram showing a flow chart of the resume operation in the information processing apparatus of the present invention. When the operator depresses the resume switch 13 in FIG. 1, the resume operation, that is, the resume ON processing of step 27 is performed. To do. Then, the device driver corresponding to each input / output device reads the status register 36 shown in FIGS. 9 and 10 to perform access monitoring (step 2).
8). Then, as a result of determining whether or not there is an access in step 29, if the access is not performed, an access prohibition response is made so that the next access is not performed until the transition to the resume state is completed (step 30). ).
That is, for a device that has accessed through the network during the resume operation, a retry response (a response prompting to access again) or a system down response (a response notifying that this information processing device is not in the usable state) To send. Then, after completely shifting to the resume state, it immediately returns to the normal operation mode and responds to the access from the outside (in order not to interrupt the execution of the background task).

If it is determined in step 29 whether or not there is an access, it is determined in step 32 that the access has been completed if the access has been performed. If the access has not been completed, step 3 is performed to prevent further continuous access after the access is completed.
In step 3, a response is sent to cancel the next access, and the determination in step 29 is made until the access is completed.

After making an access prohibition response in step 30, the remaining capacity of the battery is checked in step 31 to determine whether or not it is sufficient to shift to the resume state. Then, when the remaining capacity of the battery is insufficient, the shutdown operation and the charging of the battery are performed (step 34). When the remaining capacity of the battery is sufficient, a transition to the resume state is made (step 35).

As described above, in the present embodiment, the display data is saved in the backup storage unit, the power supply to each unit of the apparatus main body is cut off, and the display data is restored when the power is turned on again. In an information processing apparatus having a resume function for displaying, the presence or absence of the data input / output is confirmed by the access monitoring unit when the resume function is activated, and the data input / output being executed is completed and the subsequent data With the configuration that includes the resume control unit that cancels input / output, the data input / output via the network will not be damaged when the resume function is activated, and the safety and reliability of the input / output data It is possible to improve the battery life and to indicate whether the remaining capacity of the battery has reached a predetermined capacity. When a battery monitoring unit that outputs a battery monitoring signal and the resume function is activated, the battery is in a resume state when the remaining capacity of the battery reaches a predetermined capacity, and when the remaining capacity of the battery does not reach the predetermined capacity. When the battery is low and the resume function is insufficient to achieve the resume function, all data is saved to the hard disk drive because the power control supply unit that shifts the state of the main unit to the shutdown state is provided. By performing the shutdown accompanied by the operation, the safety and reliability of the input / output data can be improved.

[0038]

As described in detail above, according to the first aspect of the present invention, the access monitor for constantly detecting the presence / absence of data input / output to / from the input / output device, and the data input / output by the access monitor Since it is configured to include a power saving control unit that stops the power supply to the input / output device that is detected not to be performed, it is possible to reduce the power consumption to some extent even during normal use. To be

According to the second aspect of the invention, the display data is saved in the backup storage unit to cut off the power supply to each unit of the apparatus main body, and the display data is stored when the power is turned on again. In an information processing device having a resume function for displaying again, the presence or absence of the data input / output is confirmed by the access monitor when the resume function is activated, and the data input / output being executed is completed and the subsequent Since the system is equipped with a resume control unit that cancels data input / output, the data input / output via the network will not be damaged when the resume function is activated, and the safety and reliability of the input / output data will be eliminated. The effect that the property can be improved is obtained.

According to the third aspect of the present invention, a battery monitoring unit for outputting a battery monitoring signal indicating whether or not the remaining capacity of the battery has reached a predetermined capacity, and when the resume function is activated. A power supply control unit that shifts the state of the apparatus main body to a resume state when the remaining capacity of the battery has reached a predetermined capacity and to a shutdown state when the remaining capacity has not reached a predetermined capacity. Because of the configuration, when the remaining battery capacity is low and the resume function is insufficient to achieve the function, a shutdown that involves saving all data to the hard disk drive is performed to ensure the safety and reliability of the input / output data. The effect that the property can be improved is obtained.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of a first embodiment of an information processing apparatus of the invention.

FIG. 2 is a diagram showing a configuration example of a network system using the information processing apparatus of FIG.

FIG. 3 is a diagram excerpting and showing a portion related to the resume function in FIG.

FIG. 4 is a diagram showing in detail an input / output / power saving control unit in FIG.

FIG. 5 is a diagram showing an extract of a part related to power supply control in a second embodiment of the information processing system of the invention.

FIG. 6 is a diagram showing an extracted portion related to power supply control in FIG.

7 is a diagram showing another configuration example of the RM register in FIG.

FIG. 8 is a diagram showing a configuration example of an operating system in the information processing apparatus of the present invention.

9 is a diagram showing a configuration example of an access monitoring unit in FIG.

FIG. 10 is a diagram showing another configuration example of the access monitoring unit in FIG.

FIG. 11 is a diagram showing a flowchart of a resume operation in the information processing apparatus of the present invention.

[Explanation of symbols]

 1 central processing unit (CPU) 2 bus memory / resume control unit 3 main memory (backup storage unit) 4 system bus 5 expansion board 6 display / power saving control unit 7 display memory (backup storage unit) 8 display display (LCD) 9 Input / output / power saving control unit 10 Input / output bus 11 External input / output device 12 Built-in input / output device 13 Resume switch 14 Device driver 15 Hard disk device (HDD) 16 Ether 17 Other input / output (I / O) 18 Access monitoring Part 19 Power saving control part 20 Various application software (AP) 21 Network module 22 File system module 23 Terminal support module 24 Process management module 25 Resume management module 26 Kernel 36 Status Register 40 access detection gate 42 resume start signal generator gate 44 power control supply unit 49 battery monitor unit 50 RM register 58 network 59, 60 information processing apparatus

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Norihiro Kurokawa Inventor Kurokawa 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Hitachi, Ltd. Microelectronics Equipment Development Laboratory (72) Inventor Shin Yoshifumi Owariasaichi, Aichi Prefecture Haruoka Machiikekami No. 1 Hitachi Ltd. Office Systems Division

Claims (3)

[Claims] 1. An access monitoring unit that constantly detects the presence / absence of data input / output to / from an input / output device, and power supply to the input / output device detected by the access monitoring unit to indicate that the data input / output is not being performed. An information processing apparatus, comprising: a power saving control unit for stopping the operation. 2. An information processing apparatus having a resume function of saving display data in a backup storage unit, cutting off power supply to each unit of the apparatus main body, and displaying the display data again when the power is turned on again. In the above, when the resume function is activated, the access monitoring unit confirms the presence / absence of the data input / output, completes the data input / output under execution, and cancels the subsequent data input / output. The information processing apparatus according to claim 1, wherein the information processing apparatus is configured to include. 3. A battery monitoring unit that outputs a battery monitoring signal indicating whether or not the remaining capacity of the battery has reached a predetermined capacity, and the remaining capacity of the battery is a predetermined capacity when the resume function is activated. And a power control supply unit that shifts the state of the apparatus main body to a resume state when the predetermined capacity has not been reached, and to a shutdown state when the predetermined capacity has not been reached. 2. The information processing device according to 2.