JP7404876B2 - Information processing device, information processing method and program - Google Patents

Description

The present invention relates to an information processing device, an information processing method, and a program.

2. Description of the Related Art Conventionally, there has been known an information processing apparatus that stores log information in a storage unit and is capable of analyzing the log information (for example, Patent Document 1).

In the above-mentioned information processing device, the mode may shift (for example, shift to energy saving mode) while log information in the storage unit is being analyzed. In the above case, depending on the mode after the transition, there may be an inconvenience that the log information in the storage unit cannot be analyzed. In consideration of the above circumstances, it is an object of the present invention to suppress the inconvenience that analysis of log information becomes impossible at the time of mode transition.

In order to solve the above problems, an information processing device of the present invention includes: a transition unit that transitions to any mode including a first mode and a second mode; a first storage unit that can store log information; and a first storage unit that can store log information. and an analysis section capable of analyzing log information, the log information in the first storage section can be analyzed in a first mode of the first mode and the second mode, The log information in the second storage unit can be analyzed in the second mode, and when transitioning to the second mode, a control unit that stores the log information in the first storage unit in the second storage unit and transition to the second mode. and a calculation unit that calculates the maximum amount of information that can be stored from the first storage unit to the second storage unit from the establishment of a trigger to the transition to the second mode .

According to the present invention, the inconvenience that analysis of log information becomes impossible at the time of mode transition is suppressed.

FIG. 1 is a diagram for explaining an MFP that is an example of an information processing device. FIG. 2 is a diagram for explaining the hardware configuration of an MFP, which is an example of an information processing device. FIG. 2 is a functional block diagram of an information processing device. FIG. 3 is a diagram for explaining each piece of information stored by the information processing device. FIG. 3 is a diagram for explaining a specific example of log information stored in a storage unit. It is a flowchart of the process at the time of migration of an information processing apparatus.

<First embodiment>
FIG. 1 is a diagram for explaining a specific example of an MFP (Multifunction Peripheral Product Printer) 100, which is an example of an information processing apparatus of the present invention. Note that a device other than the MFP may be employed as the information processing device.

The MFP 100 executes various operations (copy operations, etc.) according to programs. Furthermore, each time the MFP 100 executes an operation, it accumulates and stores log information J of the operation. The above log information J includes, for example, the content of the operation and the date and time of execution. Note that the information included in the log information J may be changed as appropriate.

MFP 100 can execute self-diagnosis processing. The self-diagnosis processing described above is executed at predetermined timing in order to discover malfunctions (failures, etc.) in MFP 100. Specifically, in the self-diagnosis process, the MFP 100 sequentially analyzes the accumulated log information J to discover any defects.

As shown in FIG. 1, a terminal device 200 is communicably connected to the MFP 100. For example, by appropriately operating the terminal device 200, the MFP 100 can be caused to perform a self-diagnosis process. Further, the result of the self-diagnosis process (presence or absence of a problem) is displayed on the display of the terminal device 200.

However, the trigger for executing the self-diagnosis process is not limited to the above example. Further, the MFP 100 and the terminal device 200 may communicate by wire or wirelessly. Furthermore, a configuration may be adopted in which MFP 100 and terminal device 200 communicate via a network.

FIG. 2 is a hardware configuration diagram of the MFP 100. FIG. 2 is a hardware configuration diagram of the MFP. As shown in FIG. 2, the MFP 100 includes a controller 110, a short-range communication circuit 120, an engine control section 130, an operation panel 140, and a network I/F 150.

The controller 110 includes a CPU 101 which is the main part of the computer, a system memory (MEM-P) 102, a north bridge (NB) 103, a south bridge (SB) 104, an ASIC (Application Specific Integrated Circuit) 105, and a local memory which is a storage part. (MEM-C) 106, an HDD controller 107, and an HD 108 which is a storage unit. The NB 103 and the ASIC 105 are connected through an AGP (Accelerated Graphics Port) bus 161.

CPU 101 is a control unit that performs overall control of MFP 100. NB103 is a bridge for connecting CPU101, MEM-P102, SB104, and AGP bus 161, and is a memory controller that controls reading and writing to MEM-P102, a PCI (Peripheral Component Interconnect) master, and AGP target. has.

The MEM-P 102 includes a ROM 102a, which is a memory for storing programs and data for realizing each function of the controller 110, and a RAM 102b, which is used as a memory for developing programs and data, and for drawing when printing the memory. Note that the program stored in the RAM 102b is configured to be provided as an installable or executable file recorded on a computer-readable recording medium such as a CD-ROM, CD-R, or DVD. You may.

The SB 104 is a bridge for connecting the NB 103 to PCI devices and peripheral devices. The ASIC 105 is an IC (Integrated Circuit) for image processing that includes hardware elements for image processing, and functions as a bridge that interconnects the AGP bus 161, the PCI bus 162, the HD 108, and the MEM-C 106.

The ASIC 105 includes a PCI target and an AGP master, an arbiter (ARB) that is the core of the ASIC 906, a memory controller that controls the MEM-C 106, multiple DMACs (Direct Memory Access Controllers) that rotate image data using hardware logic, etc. It also includes a PCI unit that transfers data between the scanner section 2 and the printer section 4 via the PCI bus 162. The ASIC 105 may be connected to a USB (Universal Serial Bus) interface or an IEEE 1394 (Institute of Electrical and Electronics Engineers 1394) interface.

The HD 108 is a storage for storing image data, font data used during printing, and forms. Furthermore, the HD 108 accumulates and stores the above-mentioned log information. The HDD controller 107 controls data reading or writing to the HD 108 under the control of the CPU 101.

MEM-C 106 is a local memory used as a copy image buffer and a code buffer. The AGP bus 161 is a bus interface for the graphics accelerator card proposed to speed up graphics processing, and can speed up the graphics accelerator card by directly accessing the MEM-P 102 with high throughput. .

The short-range communication circuit 120 includes a short-range communication circuit 120a. The short-range communication circuit 120 is a communication circuit such as NFC or Bluetooth (registered trademark). The engine control section 130 includes a scanner section 2 and a printer section 4. The operation panel 140 also includes a panel display section 140a such as a touch panel that displays current setting values, a selection screen, etc., and receives input from the operator, as well as displaying setting values for conditions related to image formation such as density setting conditions. An operation panel 140b is provided, which includes a numeric keypad for accepting instructions, a start key for accepting copy start instructions, and the like.

The controller 110 controls the entire MFP 100, and controls, for example, drawing, communication, input from the operation panel 140, and the like. The scanner section 2 or the printer section 4 includes image processing sections such as error diffusion and gamma conversion.

Note that the MFP 100 can sequentially switch and select the document box function, copy function, printer function, and facsimile function using the application switching key on the operation panel 140. When the document box function is selected, the mode becomes document box mode, when the copy function is selected, the mode becomes copy mode, when the printer function is selected, the mode becomes printer mode, and when the facsimile mode is selected, the mode becomes facsimile mode.

Further, the network I/F 150 is an interface for data communication using a communication network. Near field communication circuit 120 and network I/F 150 are electrically connected to ASIC 105 via PCI bus 162.

As described above, each time the MFP 100 executes an operation, it accumulates and stores the log information J of the operation. The above log information J is stored, for example, in the HD 108 described above in a non-volatile manner. In the self-diagnosis process, MFP 100 sequentially reads log information J from HD 108 and analyzes the log information J.

However, MFP 100 is configured to be able to shift to normal mode (first mode) and energy saving mode (second mode). In the above energy saving mode, power supply to the HD 108 is stopped. During a period when power is not supplied to the HD 108, it becomes impossible to access (read) information stored in the HD 108. Therefore, in the energy saving mode, it becomes impossible to analyze the log information J of the HD 108.

In this embodiment, the system shifts to the energy saving mode at various triggers. For example, when the power button for turning on/off the power of the MFP 100 is turned off (hereinafter referred to as the "first trigger"), the normal mode shifts to the energy saving mode. Furthermore, when no printing instruction is given to MFP 100 for a predetermined period of time (hereinafter referred to as "second opportunity"), the normal mode is shifted to the energy saving mode. As will be described in detail later, the time from when the first trigger is established until the energy saving mode is started is different from the time from when the second trigger is established until the energy saving mode is started.

Assume a configuration in which log information J of the HD 108 is not transferred to another storage device. As described above, in the energy saving mode, it is impossible to analyze the log information J of the HD 108. Therefore, in the above-described configuration, a problem arises if an opportunity to shift to the energy saving mode occurs while the self-diagnosis process is being executed in the normal mode. In the above case, an inconvenience arises in that the log information J cannot be analyzed after transitioning to the energy saving mode.

In consideration of the above circumstances, in this embodiment, a configuration is adopted in which analysis of log information J can be continued even if the mode is shifted to energy saving mode during self-diagnosis processing. The above configuration will be explained in detail below.

FIG. 3 is a functional block diagram of the information processing device 10 (MFP 100). As shown in FIG. 3, the information processing device 10 includes a migration section 11, a first storage section 12, a second storage section 13, an analysis section 14, a control section 15, a calculation section 16, and a determination section 17. Each function is realized by the CPU 101 described above executing a program.

The transition unit 11 causes the normal mode to transition to the energy saving mode at a trigger including the first trigger (off operation of the power button) and the second trigger (no print instruction for a specific period) described above. Note that the normal mode may include multiple types of modes with different power consumption. Similarly, the energy saving mode may include multiple types of modes with different power consumption.

The first storage unit 12 can store log information J. Every time log information J is generated, the log information J is stored (accumulated) in the first storage unit 12 in the order in which it was generated. Further, in the self-diagnosis process in the normal mode, the log information J in the first storage unit 12 is sequentially analyzed. For example, the HD 108 described above functions as the first storage unit 12. In the normal mode, the log information J stored in the first storage unit 12 can be read. On the other hand, in the energy saving mode, the log information J stored in the first storage unit 12 cannot be read.

The second storage unit 13 can store log information J. As will be described in detail later, if an opportunity to shift to the energy saving mode is established during the self-diagnosis process, the log information J in the first storage unit 12 is stored (transferred) to the second storage unit 13. Specifically, among the log information J in the first storage section 12 , the log information J for which analysis has not been completed in the self-diagnosis process (unprocessed) is transferred to the second storage section 13 .

In the energy saving mode, the log information J in the second storage section 13 can be read. Therefore, the log information J stored in the second storage unit 13 can be analyzed in the energy saving mode. As the second storage unit 13 described above, an appropriate storage device that retains the log information J in a readable manner in the energy saving mode may be adopted. For example, a flash memory may be suitably employed as the second storage unit 13.

The analysis unit 14 analyzes the log information J. Specifically, the analysis unit 14 analyzes the log information J in the self-diagnosis process. In the configuration of the present embodiment described above, the analysis unit 14 can analyze the log information J in the first storage unit 12 in the normal mode (first mode) and the energy saving mode (second mode), and can save energy. The log information J in the second storage unit 13 can be analyzed in this mode.

When transitioning to the energy saving mode while the log information J in the first storage unit 12 is being analyzed, the control unit 15 causes the log information J to be stored (transferred) to the second storage unit 13, and the log information J is stored in the second storage unit 13. The log information J stored in the computer is analyzed. According to the above control unit 15, even if an opportunity to shift to the energy saving mode is established during the self-diagnosis process (for example, when the power button is turned off), the second storage unit This has the advantage that the self-diagnosis process can be continued using the log information J.

By the way, the period from when the opportunity to shift to energy saving mode is established until actually shifting to energy saving mode (hereinafter referred to as "energy saving transition period") is predetermined (limited) for each opportunity. is normal. Furthermore, during the period after the transition to the energy saving mode, the log information J in the first storage section 12 cannot be read, and therefore the log information J cannot be transferred to the second storage section 13. Due to the above circumstances, depending on the number (amount of information) of unanalyzed (remaining) log information J at the time when the opportunity to shift to energy saving mode is established (at the start of the energy saving transition period), it may not be possible to transfer it during the energy saving transition period. There are cases.

Assume that a plurality of pieces of log information J such as log information Jn-1, log information Jn, log information Jn+1, . . . are unprocessed at the start of the energy saving transition period. Further, it is assumed that when log information J is continued to be transferred during the energy saving transition period, the transfer of log information Jn-1 is completed, and then the energy saving transition period ends while the log information Jn is being transferred.

In the above case, in the comparative example where unprocessed log information J is continued to be transferred during the energy saving transition period regardless of the time of the energy saving transition period, log information Jn whose transfer has been interrupted is properly stored in the second storage unit 13. There is an inconvenience that it is not memorized. In consideration of the above circumstances, the information processing apparatus 10 of this embodiment has a configuration that can suppress the above disadvantages. Specifically, the information processing device 10 includes a calculation section 16 and a determination section 17.

The calculation unit 16 calculates the maximum amount of information that can be stored (transferred) from the first storage unit 12 to the second storage unit 13 (hereinafter referred to as "maximum transfer amount") before shifting to the energy saving mode. Further, the determining unit 17 determines the log information J that the control unit 15 causes to be stored from the first storage unit 12 to the second storage unit 13 according to the maximum transfer amount. Specifically, the determining unit 17 determines the log information J to be transferred during the energy saving transition period so that the total amount of information of the log information J is equal to or less than the maximum transfer amount. With the above configuration, the above-mentioned disadvantages are suppressed.

FIGS. 4A and 4B are diagrams for explaining each piece of information stored by the information processing device 10. FIG. The information processing device 10 (determining unit 17) uses the above information to determine the log information J to be transferred during the energy saving transition period.

FIG. 4(a) is a conceptual diagram of the log information table. As described above, the log information J is accumulated and stored in the first storage unit 12. The log information table associates information regarding each log information J stored in the first storage unit 12 with the log information J. For example, the log information table associates a log item indicating the type of operation (transport, jam, copy), a log ID, and the amount of information of the log information J with the log information J.

FIG. 4(b) is a diagram for explaining a specific example of the maximum transfer amount. As described above, the maximum transfer amount is the maximum amount of information that can be transferred during the energy saving transition period. The above maximum transfer amount is variable depending on the length of the energy saving transition period. Further, the length of the energy saving transition period depends on the trigger (first trigger, second trigger) for transitioning to the energy saving mode. Therefore, the maximum transfer amount is variable depending on the trigger for transitioning to the energy saving mode. It is assumed that the information processing device 10 is capable of transferring the log information J at a transfer rate of about 100 MB/sec.

For example, the energy saving transition period when shifting to the energy saving mode at the first trigger (off operation of the power button) is about 3 seconds. Therefore, the maximum transfer amount when shifting to the energy saving mode at the first opportunity is about 300 MB. Further, the energy saving transition period when shifting to the energy saving mode at the second trigger (no print instruction for a specific period of time) is about 2 seconds. Therefore, the maximum transfer amount when shifting to the energy saving mode at the second opportunity is approximately 200 MB.

Note that the maximum transfer amount is calculated before the trigger for shifting to the energy saving mode is established, and is stored in a predetermined storage device. However, the maximum transfer amount may be calculated immediately after the opportunity to shift to the energy saving mode is established. When an opportunity to shift to the energy saving mode is established, the information processing device 10 (determining unit 17) determines the log information J to be transferred within a range that does not exceed the maximum transfer amount corresponding to the opportunity.

In the present embodiment described above, the maximum transfer amount is variably determined depending on the trigger for transitioning to the energy saving mode. Therefore, compared to, for example, a configuration in which the maximum transfer amount is uniform (for example, fixed at approximately 200 MB), there is an advantage that a large amount of log information J can be transferred during the energy saving transition period.

Note that in this embodiment, a configuration may be adopted in which the energy saving transition period can be extended. For example, in this embodiment, if the information amount of one piece of log information J exceeds the maximum transfer amount, the log information J will not be transferred during the energy saving transition period. In place of this embodiment described above, when the amount of information of one piece of log information J exceeds the maximum transfer amount (ordinarily, when log information J is not transferred), the energy saving transition is made to a length that allows the log information J to be transmitted. The period may be extended.

FIGS. 5A and 5B are diagrams for explaining a specific example of transferring log information J. FIG. 5(a) is a diagram for explaining log information J in normal mode.

FIG. 5A assumes a specific example of a period during self-diagnosis processing. Specifically, in the specific example of FIG. 5(a), when the self-diagnosis process is started, n pieces of log information (J1 to Jn) (where n is an integer of 5 or more) are stored in the first storage unit 12. Assume that it will be remembered. The above log information J is analyzed by the information processing device 10 (analysis unit 14) in the order of log information J1, log information J2, log information J3, and so on. At the time shown in FIG. 5(a), analysis of log information J1 of each log information J in the first storage unit 12 has been completed, log information J2 is being analyzed (unprocessed), and log information J3 and subsequent logs have been analyzed. Assume that information J is unprocessed.

At the point in FIG. 5A described above, if an opportunity to shift to the energy saving mode is established, log information J after log information J2 (unprocessed log information J) is transferred from the first storage unit 12 to the second storage unit 13. will be forwarded to. However, if the total amount of information of unprocessed log information J is larger than the maximum transfer amount, only a part of the log information J is transferred to the second storage unit 13.

For example, in the specific example of FIG. 5A, the total amount of information of log information J2 and log information J3 is less than or equal to the maximum transfer amount (J2+J3≦maximum transfer amount). On the other hand, the total amount of information of each piece of log information J from log information J2 to log information J4 exceeds the maximum transfer amount (J2+J3+J4>maximum transfer amount). In the above case, when the opportunity to shift to the energy saving mode is established at the time point in FIG. 5(a), the log information J2 and the log information J3 are transferred to the second storage unit 13.

FIG. 5(b) is a specific example of a case where an opportunity to shift to the energy saving mode is established at the time of FIG. 5(a) described above. FIG. 5B shows a specific example in the period (energy saving mode) after the end of the energy saving transition period. In the above specific example of FIG. 5(b), log information J2 and log information J3 are stored in the second storage unit 13. The analysis unit 14 of the information processing device 10 continuously analyzes the log information J2 and the log information J3 in the energy saving mode.

In the above specific example, even if an opportunity to shift to the energy saving mode is established during the analysis of the log information J2, the self-diagnosis process is continued and the log information J2 and the log information J3 are analyzed. Further, in the self-diagnosis process before the trigger to shift to the energy saving mode is established, the log information J1 is analyzed. In the above case, the results of analyzing the log information J3 from the log information J1 are displayed on the display of the terminal device 200.

Note that if all of the log information J stored in the first storage unit 12 has not been analyzed, a configuration may be adopted in which this fact is displayed on the display of the terminal device 200. Further, a configuration may be adopted in which information identifying log information J that has not been analyzed is displayed. Furthermore, the configuration may be such that the log information J transferred to the second storage unit 13 is automatically deleted after the analysis is completed. However, all the log information J including the transferred log information J is stored in the first storage unit 12 in a non-volatile manner.

FIG. 6 is a flowchart of the mode transition process. The mode transition processing is executed to enable transfer of log information J when an opportunity to transition to the energy saving mode is established.

When the mode transition process is started, the information processing apparatus 10 determines whether the log information J is being analyzed (self-diagnosis process is in progress) or not (S101). If it is determined that the log information J is not being analyzed (S101: No), the information processing device 10 ends the mode transition process. On the other hand, if it is determined that the log information J is being analyzed (S101: Yes), the information processing device 10 determines whether an opportunity to shift to the energy saving mode has been established (S102).

If it is determined that the opportunity to transition to the energy saving mode has not been established (S102: No), the information processing device 10 ends the mode transition process. On the other hand, if it is determined that the opportunity to shift to the energy saving mode has been established (S102: Yes), the information processing device 10 determines whether the power button has been turned off (S103). That is, the information processing device 10 determines whether the first opportunity or the second opportunity has been established.

If the first opportunity is established (S103: Yes), the information processing device 10 sets the maximum transfer amount to "300MB" (S104). On the other hand, if the second trigger is established (S103: No), the information processing device 10 sets the maximum transfer amount to "200MB" (S105). The maximum transfer amount set in step S104 and step S105 above is calculated in advance. After setting the maximum transfer amount, the information processing device 10 executes a transfer process (S106).

In the transfer process, the information processing device 10 transfers the unprocessed log information J stored in the first storage unit 12 to the second storage unit 13. Specifically, the unprocessed log information J stored in the first storage unit 12 is transferred to the second storage unit 13 such that the total amount of information of the log information J is less than or equal to the maximum transfer amount. Forward.

After executing the transfer process, the information processing apparatus 10 executes a device switching process (S107). In the device switching process, the storage unit from which log information J analyzed in the self-diagnosis process is read is switched from the first storage unit 12 to the second storage unit 13. After executing the device switching process, the information processing apparatus 10 ends the mode transition process. Note that when the self-diagnosis process is completed, the information processing device 10 returns the storage unit from which the log information J is read to the first storage unit 12.

The device that executes each of the above processes can be changed as appropriate. Further, each of the above-mentioned functions (determination unit, etc.) can be realized by one or more processing circuits. Here, the term "processing circuit" as used herein refers to a processor programmed to execute each function by software, such as a processor implemented by an electronic circuit, or a processor designed to execute each function explained above. This includes devices such as ASICs (Application Specific Integrated Circuits), DSPs (digital signal processors), FPGAs (field programmable gate arrays), and conventional circuit modules.

<Summary of actions and effects of the example embodiment of the present embodiment>
<First aspect>
The information processing device (10) of this aspect includes a transition unit (11) that transitions to any mode including a first mode (normal mode) and a second mode (energy saving mode), and is capable of storing log information (J). A first storage unit (12) that can store log information, a second storage unit (13) that can store log information, and an analysis unit (14) that can analyze log information, and the log information in the first storage unit is The log information in the second storage section can be analyzed in the first mode of the first mode and the second mode, and the log information in the first storage section can be analyzed in the second mode. The apparatus further includes a control section (15) that causes the second storage section to store information. According to this aspect described above, the inconvenience that analysis of log information becomes impossible at the time of mode transition is suppressed.

<Second aspect and third aspect>
The information processing device of this aspect calculates the maximum amount of information that can be stored from the first storage unit to the second storage unit (maximum transfer amount) after the trigger for transitioning to the second mode is established and before transitioning to the second mode. A calculation unit (16) is provided. Further, an information processing device according to another aspect includes a determining unit (17) for determining log information to be stored by the control unit from the first storage unit to the second storage unit according to the maximum amount of information. According to the above configuration, the inconvenience of shifting to the second mode in the middle of transferring one log information can be suppressed.

<Fourth aspect>
In the information processing device of this aspect, the transition unit can transition to the second mode at an opportunity including a first opportunity and a second opportunity, and the calculation unit can transition to the second mode at the first opportunity and The maximum information amount of different values is calculated depending on the case where the transition to the second mode is made on two occasions. According to this aspect described above, more log information can be transferred during the energy saving transition period.

<Fifth aspect>
The information processing method of this aspect includes a transition unit that transitions to a first mode and a second mode, a first storage unit that can store log information, a second storage unit that can store log information, and analyzes log information. 1. An information processing method for controlling an apparatus comprising an analysis unit capable of analyzing log information in a first storage unit, wherein log information in a first storage unit can be analyzed in a first mode of a first mode and a second mode; The log information in the storage section can be analyzed in the second mode, and when shifting to the second mode, the method includes a step of storing the log information in the first storage section in the second storage section. In this aspect, the same effects as in the first aspect described above can be achieved.

<Sixth aspect>
The program of this aspect includes a transition section that transitions to the first mode and the second mode, a first storage section that can store log information, a second storage section that can store log information, and a transition section that can store log information. A program for controlling an apparatus including an analysis section, wherein log information in a first storage section can be analyzed in a first mode of a first mode and a second mode, and log information in a second storage section can be analyzed in a first mode of a first mode and a second mode. The information can be analyzed in the second mode, and when transitioning to the second mode, the computer is caused to perform a process of storing the log information in the first storage unit in the second storage unit. In this aspect, the same effects as in the first aspect described above can be achieved.

DESCRIPTION OF SYMBOLS 10... Information processing device, 11... Transition part, 12... First storage part, 13... Second storage part, 14... Analysis part, 15... Control part, 16... Calculation part, 17... Determination part.

Japanese Patent Application Publication No. 2014-204380

Claims (5)

a transition section that transitions to any mode including the first mode and the second mode;
a first storage unit capable of storing log information;
a second storage unit capable of storing the log information;
an analysis unit capable of analyzing the log information;
The log information in the first storage unit can be analyzed in the first mode among the first mode and the second mode,
The log information in the second storage unit can be analyzed in the second mode,
When transitioning to the second mode, a control unit that causes the log information in the first storage unit to be stored in the second storage unit ;
and a calculation unit that calculates a maximum amount of information that can be stored from the first storage unit to the second storage unit from the establishment of an opportunity to transition to the second mode until the transition to the second mode. Device. The information processing apparatus according to claim 1 , further comprising a determining unit that determines the log information to be stored from the first storage unit to the second storage unit according to the maximum information amount. The transition unit is capable of transitioning to the second mode at an opportunity including a first opportunity and a second opportunity,
2. The calculation unit calculates the maximum amount of information with different values in a case where the mode shifts to the second mode at the first opportunity and a case where the mode shifts to the second mode at the second opportunity. 2. The information processing device according to 2 . A transition unit that transitions to the first mode and the second mode, a first storage unit that can store log information, a second storage unit that can store the log information, and an analysis unit that can analyze the log information. An information processing method for controlling a device comprising:
The log information in the first storage unit can be analyzed in the first mode among the first mode and the second mode,
The log information in the second storage unit can be analyzed in the second mode,
Calculating the maximum amount of information that can be stored from the first storage unit to the second storage unit from the establishment of an opportunity to transition to the second mode until the transition to the second mode;
An information processing method, comprising the step of storing the log information in the first storage section in the second storage section when transitioning to the second mode. A transition unit that transitions to the first mode and the second mode, a first storage unit that can store log information, a second storage unit that can store the log information, and an analysis unit that can analyze the log information. A program for controlling a device provided,
The log information in the first storage unit can be analyzed in the first mode among the first mode and the second mode,
The log information in the second storage unit can be analyzed in the second mode,
Calculating the maximum amount of information that can be stored from the first storage unit to the second storage unit from the establishment of an opportunity to transition to the second mode until the transition to the second mode;
A program that causes a computer to execute a process of storing the log information in the first storage unit in the second storage unit when transitioning to the second mode.

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