JP5733145B2 - Policy setting system and policy setting method - Google Patents

Description

  The present invention relates to a system for setting a policy for managing a computer.

  In recent years, departments that manage a plurality of terminals collect information on managed terminals via a network and apply a preset policy to the managed terminals. Information collection is performed by software called an agent installed on a managed terminal transmitting information related to the event of the own terminal, for example, information about the software and hardware of the own terminal, to the management server. By applying the policy to the terminal to be managed, for example, the time until the screen saver is activated in the power saving setting, the time until the sleep mode is entered when there is no operation, and the like can be set as the power saving policy.

  As a technology related to power saving, there is a server technology that collectively applies a power saving policy set for each time zone by an administrator to a plurality of terminals.

  In addition, a technology of a computer device that measures the maintenance time of a screen saver screen and controls the time until activation of the screen saver based on the measured time is known (for example, Patent Document 1). In such a technique, when the measured maintenance time of the screen saver screen is shorter than the first reference time, the time until the screen saver screen is activated is lengthened.

JP 2000-20204 A

  However, the conventional technology related to power saving has a problem that power saving cannot be appropriately performed in an electronic device having a monitor.

  For example, in the server technology related to power saving, it is not possible to optimally set a power saving policy such as the time until the screen saver is activated or the time until the sleep mode is entered. In other words, the above-mentioned time related to the power saving policy applied to the terminal is not a time according to the usage status of the user, so it is too long for a terminal that is not used, but too short for a terminal that is being used. It may be time. As a result, in view of the purpose of power saving, this time is not necessarily an appropriate time, and thus power saving cannot be appropriately performed in the terminal.

  In addition, even in the case of computer device technology related to power saving, if the measured screen saver screen maintenance time is shorter than the first reference time, the time until the screen saver screen is activated is lengthened. The time will be longer without limitation. As a result, in view of the purpose of power saving, this time is not necessarily an appropriate time, and thus power saving cannot be appropriately performed in the computer apparatus.

  Such a problem occurs when the server or computer device can distinguish the situation that the user is using from the situation that the user is not using, but the situation that the user is using indirectly (touching the device). It is because it is not possible to capture the situation that is not in use.

  It is an object of the disclosed technique to appropriately save power in an electronic device having a monitor such as a server.

  In one aspect, the policy setting system is a policy setting system including a management server and a terminal, and the terminal receives power from the first state from the first state received from the management server from the first state. Based on the policy stored by the storage unit, the storage unit storing the transition time, the transition condition, and the policy that defines the transition range of the transition time for each time segment. A transition time adjusting unit that changes a value of the transition time within the change range based on a time from the transition to the second state to the transition to the first state, and the transition time adjusting unit. A first transmission unit that transmits the transition time adjustment record to the management server, and the management server includes the transition time adjustment record transmitted by the first transmission unit. Zui and has an update unit for updating the policy to be set to the transmission source terminal, and a second transmission unit that transmits the policy updated by the updating unit to the terminal.

  According to one aspect of the policy setting system disclosed in the present application, it is possible to appropriately perform power saving in an electronic device having a monitor.

FIG. 1 is a functional block diagram illustrating the configuration of the policy setting system according to the embodiment. FIG. 2 is a diagram illustrating an example of a power saving policy. FIG. 3 is a diagram illustrating an example of variable width information. FIG. 4 is a diagram illustrating an example of the data structure of the start history. FIG. 5 is a diagram illustrating an example of a data structure of switching results. FIG. 6 is a diagram illustrating an example of a data structure of usage records. FIG. 7 is a diagram illustrating an example of a sequence of policy setting processing according to the embodiment. FIG. 8 is a flowchart illustrating an example of the procedure of the power saving policy update process. FIG. 9 is a flowchart illustrating an example of a procedure of a start waiting time switching process based on the power saving policy. FIG. 10A is a diagram (1) illustrating a specific example of policy setting processing according to the embodiment. FIG. 10B is a diagram (2) illustrating a specific example of the policy setting process according to the embodiment. FIG. 10C is a diagram (3) illustrating a specific example of the policy setting process according to the embodiment. FIG. 10D is a diagram (4) illustrating a specific example of the policy setting process according to the embodiment. FIG. 11 is a diagram illustrating a modified example of the policy setting process according to the embodiment. FIG. 12 is a diagram illustrating an example of a management server that executes a policy setting program. FIG. 13 is a diagram illustrating an example of a client terminal that executes a policy setting program.

  Embodiments of a policy setting system and a policy setting method disclosed in the present application will be described below in detail with reference to the drawings. The present invention is not limited to the embodiments.

  FIG. 1 is a functional block diagram illustrating the configuration of the policy setting system according to the embodiment. As illustrated in FIG. 1, the policy setting system 1 includes n client terminals 2, a management terminal 3, and a management server 4, and performs policy setting processing between the management server 4 and the client terminal 2. Here, the policy setting process means that the management server 4 sets a policy relating to power saving of the client terminal 2 (hereinafter referred to as a power saving policy) so as to be optimized according to the usage status of the client terminal 2. Show. The power saving policy includes a start waiting time until a screen saver screen state indicating a state of low power consumption or a sleep state is started. Further, the power saving policy includes a start waiting time until a shutdown indicating a state where power consumption is low. The start waiting time until the state of the screen saver screen is started (start waiting time until the screen saver screen) means a waiting time until the screen saver screen is started after no operation signal is input from a keyboard, a mouse, or the like. Further, the start waiting time until the sleep state is started (start waiting time until sleep) means a waiting time until the transition to sleep after no operation signal is input from a keyboard, a mouse, or the like. Furthermore, the start waiting time until the shutdown means a waiting time until the shutdown after no operation signal is input from the keyboard, mouse, or the like. And since it can change to the state where the electric power consumed is small, so that the value of these start waiting times is small, power consumption is suppressed. Details of the power saving policy will be described later.

  The client terminal 2 includes a communication unit 21, a storage unit 22, and a control unit 23.

  The communication unit 21 performs data communication with the management server 4 via the network. The communication unit 21 corresponds to a communication device or a communication card that performs data communication using a predetermined communication protocol.

  The storage unit 22 stores a power saving policy 221, variable width information 222, a usage record 225, a start history 223, and a switching record 224. The storage unit 22 corresponds to, for example, a semiconductor memory device such as a random access memory (RAM), a read only memory (ROM), or a flash memory, or a storage device such as a hard disk or an optical disk.

  The power saving policy 221 includes transition times that are associated with each time zone (hereinafter, synonymous with time divisions) and that transition from each other to the second state that consumes less power than the first state. Stipulate. That is, the power saving policy 221 defines the start waiting time until the screen saver screen, the start waiting time until the sleep, and the start waiting time until the shutdown for each time zone. FIG. 2 is a diagram illustrating an example of a power saving policy. Note that “SS” shown in the figure is an abbreviation for a screen saver. As shown in FIG. 2, the power saving policy 221 associates a start waiting time until the screen saver screen and a time zone.

  As an example, if the power saving policy 221 is a time zone from 11:00 to 12:00, it defines a policy that “10 minutes to start SS”, that is, a start waiting time to screen saver screen is 10 minutes. Yes. In addition, the power saving policy 221 defines a policy in which “5 minutes until the start of SS”, that is, the start waiting time until the screen saver screen is 5 minutes in the time zone from 12:00 to 13:00. . The policy in the time zone from 12:00 to 13:00 is a policy in which power consumption is suppressed because the time until the start of SS is shorter than the policy in the time zone from 11:00 to 12:00. I can say that.

  In FIG. 2, the power saving policy 221 associates the start waiting time until the screen saver with the time zone, but for some time zones, the start waiting time until the sleep and the start waiting time until the shutdown. May be associated. The power saving policy 221 is transmitted from the management server 4 when the client terminal 2 is in a power-on state, for example.

  Returning to FIG. 1, the variable width information 222 defines, for each time segment, the transition range of the transition time for transition from the first state to the second state that consumes less power than the first state. For example, the variable width information 222 is variable width information in which switching of each start waiting time is permitted based on a policy, and is associated with each time zone. FIG. 3 is a diagram illustrating an example of variable width information. As shown in FIG. 3, the variable width information 222 associates a variable width in which switching of each start waiting time is permitted with a policy as a reference and a time zone.

  As an example, the variable width information 222 is “3 to 20 minutes” in the time zone from 9:00 to 12:00. That is, switching is permitted in the range from 3 minutes to 20 minutes, such as the start waiting time until the screen saver screen, based on the policy in the same time zone. Referring to FIG. 2, for the time zone from 9:00 to 11:00, the policy is “20 minutes until the start of SS”, so the range from 3 minutes to 20 minutes with reference to 20 minutes. Start waiting time switching is allowed. In addition, since the policy is “10 minutes until SS start” for the time zone from 11:00 to 12:00 shown in FIG. 2, start to SS in the range from 3 minutes to 20 minutes based on 10 minutes. Switching of waiting time is permitted. Furthermore, in the time zone from 12:00 to 13:00, it is set to “3-5 minutes”. That is, switching is permitted in the range from 3 minutes to 5 minutes, such as the start waiting time until the screen saver screen. Since the policy of the time zone from 12:00 to 13:00 shown in FIG. 2 is “5 minutes until SS start”, the start waiting time until SS in the range from 3 minutes to 5 minutes with 5 minutes as a reference Switching is allowed.

  The variable width information 222 is transmitted from the management server 4 together with the power saving policy 221 when the client terminal 2 is in a power-on state, for example.

  Returning to FIG. 1, the start history 223 is a screen saver screen or sleep start history, and is information including a start time, a release time, and a release interval from start to release. Details of the start history 223 will be described later.

  The switching record 224 is a transition time adjustment record when the transition time for transition from the first state to the second state that consumes less power than the first state is changed within the change range. That is, the switching record 224 is a switching record when each start waiting time is switched within the permitted variable width range indicated by the variable width information 222. The switching record 224 is information for capturing the situation that the user is using indirectly, that is, the situation that the client terminal 2 is not touched but is being used. Details of the switching record 224 will be described later.

  The usage record 225 is information for distinguishing whether or not the user is using the client terminal 2, and is associated with each time zone. The usage record 225 is information for capturing a situation where the user actually uses (operates) the client terminal 2 and a situation where the user does not actually use (operate). Note that the usage record 225 cannot capture the situation that the user is using indirectly, that is, the situation that the client terminal 2 is not touched but is being used. Details of the usage record 225 will be described later.

  The control unit 23 includes a policy setting unit 231, a monitoring unit 232, a switching unit 233, and a result transmission unit 234. For example, the control unit 23 corresponds to an integrated device such as an application specific integrated circuit (ASIC) or a field programmable gate array (FPGA). Moreover, the control part 23 respond | corresponds to electronic circuits, such as CPU and MPU (Micro Processing Unit), for example.

  The policy setting unit 231 records the power saving policy 221 and the variable width information 222 transmitted from the management server 4 in the storage unit 22. Further, the policy setting unit 231 sets the start waiting time until the screen saver screen, the start waiting time until the sleep, and the start waiting time until the shutdown on the OS (Operating System) based on the power saving policy 221.

  The monitoring unit 232 monitors a screen saver screen controlled by the OS or a start signal indicating the start of sleep and an operation signal interrupted from a mouse, a keyboard, or the like. For example, the monitoring unit 232 detects the start of the screen saver screen or sleep by a start signal, and detects the release of the screen saver screen or sleep by an operation signal. When detecting the start signal or the operation signal, the monitoring unit 232 records the start time when the start signal is detected, and the release time and the release interval from the start time to the release time when the operation signal is detected. Furthermore, the monitoring unit 232 delivers the start time when the start signal is detected to the switching unit 233 when the operation signal is detected.

  Here, the data structure of the start history will be described with reference to FIG. FIG. 4 is a diagram illustrating an example of the data structure of the start history. As shown in FIG. 4, the start history 223 stores a start time 223a, a release time 223b, and a release interval 223c in association with each other. The start time 223a indicates the start time of the screen saver screen or the start time of sleep. The release time 223b indicates the release time of the screen saver screen or the release time of sleep. The release interval 223c indicates a difference time interval obtained by subtracting the start time from the screen saver screen or sleep release time.

  As an example, in the start history 223, when the start time 223a is “2011/09/30 09: 0”, the release time 223b is “2011/09/30 09:03” and the release interval 223c is “180 seconds”. Remember as. In addition, when the start time 223a is “2011/09/30 12:05”, the start history 223 stores the release time 223b and the release interval 223c as blanks. In this case, the screen saver screen or sleep is being continued.

  Returning to FIG. 1, the switching unit 233 is based on the time from the transition to the second state, which consumes less power than the first state, based on the power saving policy 221 until the transition to the first state. The transition time value is changed within the change range. That is, the switching unit 233 uses the time from the start to the release of the state that consumes less power that has been transitioned based on the power saving policy 221 to start the state within the range specified in the variable width information 222. Switch the start waiting time. Here, the state of low power means a screen saver screen state, a sleep state, or a shutdown state. In the following description of the switching unit 233, the state where the power is low is described as the state of the screen saver screen.

  For example, the switching unit 233 determines whether all the release intervals 223c included in the current time zone are immediate based on the information stored in the start history 223. Then, when the number of release intervals determined to be immediate exceeds the threshold, the switching unit 233 switches to a start waiting time that is greater than the current time zone policy set for the terminal itself. At this time, the switching unit 233 switches the start waiting time within a changeable range of the same time zone of the variable width information 222. This is because the switching unit 233 determines that the user is not touching the client terminal 2 but is in use. On the other hand, when the number of release intervals determined to be immediate does not exceed the threshold, the switching unit 233 leaves the start waiting time as it is. The release interval determined to be immediate is, for example, within one minute, but can be regarded as a situation where the user is indirectly using (a situation where the client terminal is not touched but is in use). Any time interval may be used.

  Further, the switching unit 233 determines whether or not a predetermined time has elapsed from the start time of the screen saver screen. If the switching unit 233 determines that the predetermined time has elapsed, the switching unit 233 switches to a start waiting time smaller than the current time zone policy set in the terminal itself. At this time, the switching unit 233 switches the start waiting time within a changeable range of the same time zone of the variable width information 222. This is because the switching unit 233 determines that the user is not actually using (operating) the client terminal 2. Thereby, since the switching part 233 can change to the state with little power consumption at an early stage, power consumption can be suppressed. On the other hand, when it is determined that the predetermined time has not elapsed, the switching unit 233 leaves the start waiting time as it is. The predetermined time is, for example, 30 minutes or 60 minutes, but may be a time interval that can be regarded as a situation that the user does not actually use.

  In addition, the switching unit 233 records the information for switching the start waiting time in the switching record 224. Here, the data structure of the switching results will be described with reference to FIG. FIG. 5 is a diagram illustrating an example of a data structure of switching results. As shown in FIG. 5, the switching record 224 stores the switching time 224a and the start waiting time 224b after switching in association with each other. The switching time 224a indicates the time when the start waiting time is switched. The start waiting time 224b after switching indicates the starting waiting time after switching.

  As an example, when the switching time 224a is “2011/09/30 09:12”, the switching record 224 stores the start waiting time 224b after switching as “10 minutes”. In addition, when the switching time 224a is “2011/09/30 12:05”, the switching record 224 stores the start waiting time 224b after switching as “3 minutes”.

  The result transmission unit 234 transmits the switching result 224 and the usage result 225 to the management server 4.

  For example, the result transmission unit 234 distinguishes use or non-use of the own terminal in each time zone based on the number of times the screen saver screen (or sleep) is started and the release interval in the time zone, and creates a usage record 225. As an example, the result transmission unit 234 uses the start history 223 to obtain the number of screen saver (or sleep) start times 223a and release intervals 223c for each time period. Then, the result transmitting unit 234 distinguishes use or unused of the own terminal in each time zone based on the obtained information, and records it in the use result 225.

  In addition, the result transmission unit 234 transmits the switching result 224 and the created use result 225 to the management server 4. In addition, the frequency | count of transmitting the utilization track record 225 and the switching track record 224 should just be once a day, and should just be the time of completion of the operation | work of the client terminal 2, for example at the time of shutdown.

  Here, the data structure of the usage record will be described with reference to FIG. FIG. 6 is a diagram illustrating an example of a data structure of usage records. As shown in FIG. 6, the usage record 225 stores the time zone 225a and the used / unused 225b in association with each other. The time zone 225a is a time interval in units of one hour and indicates a time segment. Used / unused 225b indicates information for distinguishing whether or not the user is using the terminal. Here, “1” is stored when used, and “0” is stored when not used.

  As an example, the usage record 225 stores used / unused 225b as “0” when the time zone 225a is “09:00 to 10:00”. Further, the usage record 225 stores the used / unused 225b as “1” when the time zone 225a is “10: 0 to 11:00”.

  The management terminal 3 is a system administrator terminal of the policy setting system 1. The management terminal 3 transmits a default power saving policy to the management server 4 in order to perform initial setting of the power saving policy. The power saving policy to be transmitted may be for each client terminal 2 or not for each client terminal 2.

  The management server 4 includes a communication unit 41, a storage unit 42, and a control unit 43.

  The communication unit 41 performs data communication with the client terminal 2 and the management terminal 3 via a network. The communication unit 41 corresponds to a communication device or a communication card that performs data communication using a predetermined communication protocol.

  The storage unit 42 stores a power saving policy 421, variable width information 422, a switching record 423, and a use record 424. The storage unit 42 corresponds to, for example, a semiconductor memory device such as a random access memory (RAM), a read only memory (ROM), or a flash memory, or a storage device such as a hard disk or an optical disk.

  The power saving policy 421 defines a transition time associated with each time zone, in which the first state changes to the second state that consumes less power than the first state. That is, the power saving policy 421 defines the start waiting time until the screen saver screen, the start waiting time until the sleep, and the start waiting time until the shutdown for each time zone. The power saving policy 421 is transmitted from the management terminal 3 as a default policy. Note that the content of the power saving policy 421 is the same as that of the power saving policy 221, and thus description thereof is omitted.

  The variable width information 422 defines, for each time section, the transition range of the transition time for transitioning from the first state to the second state, which consumes less power than the first state. For example, the variable width information 422 is variable width information in which switching of each start waiting time is permitted based on a policy, and is associated with each time zone. The variable width information 422 is transmitted from the management terminal 3 as default variable width information. Note that the content of the variable width information 422 is the same as that of the variable width information 222, and a description thereof will be omitted.

  The switching record 423 is a transition time adjustment record when the client terminal 2 changes the transition time for transition from the first state to the second state that consumes less power than the first state within the change range. In other words, the switching record 423 is a switching record when the start waiting time is switched by the client terminal 2. The switching record 423 is accumulated as a history each time it is transmitted from the client terminal 2. Note that the data structure of the switching record 423 is the same as that of the switching record 224, and thus the description thereof is omitted.

  The usage record 424 is information for distinguishing whether the user is using the client terminal 2 and is associated with each time zone. The usage record 424 is accumulated as a history each time it is transmitted from the client terminal 2. Since the data structure of the usage record 424 is the same as that of the usage record 225, the description thereof is omitted.

  The control unit 43 includes an initial policy application unit 431, a performance storage unit 432, a policy update unit 433, and a policy transmission unit 434. For example, the control unit 43 corresponds to an integrated device such as an application specific integrated circuit (ASIC) or a field programmable gate array (FPGA). Moreover, the control part 43 respond | corresponds to electronic circuits, such as CPU and MPU (Micro Processing Unit), for example.

  The initial policy application unit 431 records the default power saving policy transmitted from the management terminal 3 in the storage unit 42 and applies it to the client terminal 2.

  The record storage unit 432 stores the use record 225 transmitted from the client terminal 2 in the use record 424 of the storage unit 42. The record accumulating unit 432 accumulates the switching record 224 transmitted from the client terminal 2 in the switching record 423 of the storage unit 42.

  The policy update unit 433 evaluates whether the currently applied power saving policy 421 is optimal based on the switching record 423 and the usage record 424.

  For example, the policy update unit 433 extracts the start waiting time (start waiting time 224b after switching) switched for each time zone of the power saving policy 421 from the information stored in the switching record 423. Then, the policy update unit 433 adds the extracted start waiting time after switching and the policy in the same time zone of the currently applied power saving policy 421 for each time zone, and the average value obtained from the added value Is a candidate for a new policy.

  Further, the policy update unit 433 extracts the distinction (used / unused 225b) of whether or not the terminal is used for each time zone of the power saving policy 421 from the information stored in the usage record 424. Then, the policy update unit 433 calculates the percentage of unused terminals for each time period using the extracted terminal usage / unused distinction. Then, if the calculated percentage of unused terminals is equal to or greater than a predetermined value, the policy update unit 433 sleeps instead of the screen saver even if the time related to the screen saver is defined in the power saving policy 421. Time until is a new policy. At this time, the policy update unit 433 sets the sleep lower limit value in the same time zone of the variable width information 422 as a new policy. This is because the policy update unit 433 determines that there is a high probability that the target time zone does not use the terminal, and suppresses power consumption. On the other hand, when the calculated ratio of unused terminals is less than the predetermined value, the policy update unit 433 sets a new policy candidate as a new policy. Then, the policy update unit 433 updates the power saving policy 421 incorporating the new policy.

  The ratio indicated by the predetermined value is, for example, 50%, but may be 60% or 70% as long as the probability that the terminal is not used is high. Further, the policy update unit 433 may evaluate each client terminal 2 or may collectively evaluate a plurality of client terminals 2.

  The policy transmission unit 434 transmits the power saving policy 421 updated by the policy update unit 433 to the client terminal 2 for feedback.

[Policy setting processing sequence]
Next, a policy setting process sequence among the management terminal 3, the management server 4, and the client terminal 2 will be described with reference to FIG. FIG. 7 is a diagram illustrating an example of a sequence of policy setting processing according to the embodiment.

  As shown in FIG. 7, the management terminal 3 transmits a default power saving policy to the management server 4 in order to perform initial setting of the power saving policy (step S11). Then, in the management server 4, the initial policy application unit 431 transmits the power saving policy 421 transmitted from the management terminal 3 to the client terminal 2 together with the variable width information 422 (step S21).

  Subsequently, in the client terminal 2, the policy setting unit 231 sets the power saving policy transmitted from the management server 4 on the OS (step S31). Further, the switching unit 233 executes a start waiting time switching process based on the power saving policy 221 (step S32). Then, the result transmitting unit 234 transmits the use result 225 created using the start waiting time switching result 224 and the start history 223 switched by the switching unit 233 to the management server 4 (step S33).

  Then, in the management server 4, the policy update unit 433 executes a power saving policy update process using the switching record 224 and the use record 225 transmitted from the client terminal 2 (step S <b> 22). Then, when the power saving policy 421 is updated by the policy updating unit 433, the policy transmission unit 434 transmits the updated power saving policy 421 to the client terminal 2 and feeds back the power saving policy 421 (step S23).

  After that, the client terminal 2 to which the power saving policy 421 has been fed back continues to perform the processing from step S31 to step S32.

[Example of power saving policy update processing procedure]
Next, the power saving policy update processing in the management server 4 shown in step S22 of FIG. 7 will be described with reference to FIG. FIG. 8 is a flowchart illustrating an example of the procedure of the power saving policy update process.

  The record accumulating unit 432 accumulates the switching record 224 transmitted from the client terminal 2 in the switching record 423 of the storage unit 42, and accumulates the use record 225 transmitted from the client terminal 2 in the switching record 423 of the storage unit 42 ( Step S221).

  Then, the policy updating unit 433 evaluates the currently applied power saving policy 421 based on the usage record 424 and the switching record 423 (step S222). For example, the policy update unit 433 extracts the start waiting time (start waiting time 224b after switching) switched for each time zone of the power saving policy 421 from the information stored in the switching record 423 accumulated in the storage unit 42. To do. Then, the policy update unit 433 adds the extracted start waiting time after switching and the policy in the same time zone of the currently applied power saving policy 421 for each time zone, and the average value obtained from the added value Is a candidate for a new policy. Further, the policy update unit 433 distinguishes whether or not the terminal for each time zone of the power saving policy 421 is used from the information stored in the usage record 424 accumulated in the storage unit 42 (used / unused 225b). To extract. Then, the policy update unit 433 calculates the percentage of unused terminals for each time period using the extracted terminal usage / unused distinction. If the calculated percentage of unused terminals is equal to or greater than a predetermined value, the policy update unit 433 sets the time until sleep as a new policy. At this time, the policy update unit 433 sets the sleep lower limit value in the same time zone of the variable width information 422 as a new policy. On the other hand, when the calculated ratio of unused terminals is less than the predetermined value, the policy update unit 433 sets a new policy candidate as a new policy.

  Then, the policy update unit 433 determines whether the policy has been changed (step S223). When it is determined that the policy has been changed (step S223; Yes), the policy update unit 433 updates the power saving policy 421 that incorporates the new policy that has been changed (step S224), and ends the process. On the other hand, when it is determined that there is no change in the policy (step S223; No), the policy update unit 433 does not update the power saving policy 421 and ends the process.

[Example of start waiting time switching process based on the power saving policy]
Next, the start waiting time switching process based on the power saving policy shown in step S32 of FIG. 7 will be described with reference to FIG. FIG. 9 is a flowchart illustrating an example of a procedure of a start waiting time switching process based on the power saving policy. In the example of FIG. 9, it is assumed that the monitoring unit 232 detects a start signal indicating the start of the screen saver screen.

  The monitoring unit 232 that has detected the start signal indicating the start of the screen saver screen passes the start time of the screen screen to the switching unit 233. Then, the switching unit 233 receives the start time of the screen saver screen (step S321).

  Next, the switching unit 233 determines whether or not a release time has been received (step S322). When it is determined that the release time has not been received (step S322; No), the switching unit 233 determines whether a predetermined time has elapsed from the start time (step S323). When it is determined that the predetermined time has not elapsed since the start time (step S323; No), the switching unit 233 proceeds to step S322 to wait for the reception of the release time.

  On the other hand, if it is determined that a predetermined time has elapsed from the start time (step S323; Yes), the switching unit 233 switches to a start waiting time that is smaller than the current time zone policy set in the terminal (step S324). At this time, the switching unit 233 switches the start waiting time within a changeable range of the same time zone of the variable width information 222. This is because the switching unit 233 determines that the user is not actually using (operating) the client terminal 2. After that, the switching unit 233 proceeds to step S322 to wait for receipt of the release time.

  When determining that the release time has been received (step S322; Yes), the switching unit 233 receives the release time of the screen saver screen (step S325). Then, the switching unit 233 sets “0” indicating an initial value to the index k indicating the number of immediate cancellations (step S326).

  Then, the switching unit 233 selects a release interval included in the current time zone from the information stored in the start history 223 (step S327). Then, the switching unit 233 determines whether or not the selected release interval is smaller than the constant T (step S328). The constant T indicates a boundary value of the release interval for determining whether or not immediate release is performed. For example, the constant T is 60 (seconds), but the value of the time interval that can be regarded as a situation that the user is using indirectly. If it is good.

  When it determines with the selected cancellation | release space | interval being smaller than the constant T (step S328; Yes), the switch part 233 adds 1 to the value set to the index k (step S329), and transfers to step S330. On the other hand, when it determines with the selected cancellation | release space | interval being more than the constant T (step S328; No), the switch part 233 transfers to step S330.

  Then, the switching unit 233 determines whether there is an unselected release interval in the start history 223 (step S330). If it is determined that there is an unselected release interval (step S330; Yes), the switching unit 233 proceeds to step S327 to select an unselected release interval.

  On the other hand, when it determines with there being no unselected cancellation | release space | interval (step S330; No), the switching part 233 determines whether the index k which shows the number of immediate cancellation | releases is larger than the constant C (step S331). The constant C indicates a threshold value, and is 1 (times), for example. However, the constant C may be a value of the number of times that can be regarded as a situation that the user is using indirectly. If it is determined that the index k is greater than the constant C (step S331; Yes), the switching unit 233 switches to a start waiting time that is greater than the current time zone policy set in the terminal (step S332). At this time, the switching unit 233 switches the start waiting time within a changeable range of the same time zone of the variable width information 222. This is because the switching unit 233 determines that the user is not touching the client terminal 2 but is in use. Thereafter, the switching unit 233 ends the process in order to wait for reception of the start time.

  On the other hand, when it is determined that the index k is equal to or smaller than the constant C (step S331; No), the switching unit 233 proceeds to step S321 in order to wait for reception of the start time.

[Specific example of policy setting processing]
Next, a specific example of policy setting processing in the management server 4 will be described with reference to FIGS. 10A to 10D. Here, FIG. 10A describes the initial policy set by the system administrator, FIG. 10B describes the usage record 424 obtained from the client terminal 2, and FIG. 10C illustrates the switching record 423 obtained from the client terminal 2. Will be described. In FIG. 10D, the power saving policy 421 optimized from the daily usage record 424 and the switching record 423 will be described. In FIGS. 10A to 10D, for convenience of explanation, data is replaced with a band graph.

  The upper-stage initial policy shown in FIG. 10A is a power saving policy 421 that is initially set by the system administrator of the management terminal 3. As an example, the power saving policy 421 indicates that the start waiting time until the screen saver screen (SS) is 20 minutes in the time zone from 9:00 to 11:00 “20 minutes until SS start” Is a policy. In the time zone from 11:00 to 12:00, the policy is “10 minutes until SS start” indicating that the start waiting time until SS is 10 minutes. In the time zone from 12:00 to 13:00, the policy is “5 minutes until SS start” indicating that the start waiting time until SS is 5 minutes. In the time zone from 13:00 to 15:00, the policy is “20 minutes until SS start” indicating that the start waiting time until SS is 20 minutes. In the time zone from 15:00 to 18:00, the policy is “10 minutes until SS start” indicating that the start waiting time until SS is 10 minutes. When the time period is from 18:00 to 19:00, the policy is “5 minutes until SS start” indicating that the start waiting time until SS is 5 minutes.

  The variable width of the permitted policy shown in the lower part of FIG. 10A is the variable width information 422 that is initially set by the system administrator of the management terminal 3. As an example, when the variable width information 422 is a time zone from 9:00 to 12:00, the start waiting time until SS, the waiting time until the display is turned off, and the starting waiting time until sleep start from 3 minutes. Switchable up to 20 minutes. In the time zone from 12:00 to 13:00, the start waiting time until SS and the start waiting time until sleep can be switched from 3 minutes to 5 minutes. In the time zone from 13:00 to 15:00, the start waiting time until SS, the waiting time until the display is turned off, and the start waiting time until sleep can be switched from 3 minutes to 20 minutes. From 15:00 to 19:00 or later, the waiting time until starting SS, waiting time until powering off the display, starting waiting time until sleep, and waiting time until shutdown is from 3 minutes to 20 minutes. Switchable.

  The upper usage record 424 shown in FIG. 10B is the usage record 225 on the first day transmitted from the client terminal 2. Also, the lower usage record 424 shown in FIG. 10B is the usage record 225 of the second day transmitted from the client terminal 2. Further, usage records 225 for several days transmitted from the client terminal 2 are accumulated in the usage records 424. The usage record 424 of the client terminal 2 is created by, for example, the record transmission unit 234.

  As an example, the usage record 424 on the first day indicates that the client terminal (PC) was unused because it was a morning party in the time zone from 9:00 to 10:00. In the time zone from 10:00 to 12:00, it indicates that the PC was used because it was a normal business. In the time zone from 12:00 to 13:00, it indicates that the PC was unused for lunch. In the time zone from 13:00 to 18:00, it indicates that the PC was used because it was a normal business. The usage record 225 on the second day is almost the same as that on the first day. However, in the time zone from 13:00 to 14:00, it indicates that the PC was not used for the conference. ing.

  The switching record 423 shown in FIG. 10C is the switching record 224 on the first day and the second day transmitted from the client terminal 2. In the switching record 423 on the first day to the second day, the start waiting time until SS in a certain time zone is switched based on the policy. Further, the switching results 224 for several days transmitted from the client terminal 2 are stored in the switching results 423, respectively. Note that the switching record 224 of the client terminal 2 is created by the switching unit 233, for example.

  As an example, in the time zone from 9:00 to 10:00, the start waiting time until SS is switched from 20 minutes to 10 minutes. That is, since the switching unit 233 determines that a predetermined time has elapsed since the SS started, the switching unit 233 determines that the user has not actually used the SS, and sets the start waiting time until the SS to the variable width information 422 in the same time zone. Is switched to a small time within the range of the variable width (3 to 20 minutes). Here, the start waiting time until SS is changed from 20 minutes to 10 minutes. The predetermined time indicates the length of time that can be regarded as a situation that the user does not actually use.

  Further, in the time zone from 12:00 to 13:00, the start waiting time until SS is switched from 5 minutes to 3 minutes. That is, since the switching unit 233 determines that a predetermined time has elapsed since the SS started, the switching unit 233 determines that the user is not actually using the SS and sets the start waiting time until the SS in the variable width information 422 in the same time zone. The time is switched to a smaller time within the range of the variable width (3 to 5 minutes). Here, the start waiting time until SS is switched from 5 minutes to 3 minutes.

  In addition, in the time zone from 13:00 to 14:00, the start waiting time until SS is switched from 20 minutes to 10 minutes. That is, since the switching unit 233 determines that a predetermined time has elapsed since the SS started, the switching unit 233 determines that the user is not actually using the SS and sets the start waiting time until the SS in the variable width information 422 in the same time zone. The time is switched to a smaller time within the range of the variable width (3 to 20 minutes). Here, the start waiting time until SS is changed from 20 minutes to 10 minutes.

  Thereby, since the client terminal 2 autonomously switches the SS start waiting time based on the policy, it is possible to perform power saving control in accordance with the usage status of the user.

  The power saving policy 421 shown in FIG. 10D is optimized from the usage record 424 for several days shown in FIG. 10B and the switching record 423 for the same time shown in FIG. 10C. Here, it is assumed that the switching record 423 and the use record 424 for one week are accumulated. Note that the power saving policy 421 to be optimized is updated by the policy updating unit 433.

  As an example, if the time period is from 9:00 to 10:00, the policy is “3 minutes until sleep”. In other words, the policy update unit 433 refers to the switching record 423 shown in FIG. 10C, “10 minutes until SS start”, but if the use record 424 shown in FIG. It is determined that Therefore, the policy update unit 433 updates the start waiting time until sleep to the lower limit value of the variable width (3 to 20 minutes) of the variable width information 422 in the same time zone. Here, the start waiting time until sleep is updated to 3 minutes. Even in the time zone from 12:00 to 14:00, the processing is the same as in the time zone from 9:00 to 10:00, and the start waiting time until sleep is updated to 3 minutes. Represents.

  If the time period is from 17:00 to 18:00, the policy is “5 minutes until SS start”. That is, the policy update unit 433 extracts the start waiting time after switching of this time zone from the switching performance 423 for one week. Then, the policy update unit 433 adds the extracted start waiting time and the policy “10 minutes” in the same time zone of the currently applied power saving policy 421, and calculates the average time obtained from the added value of the new policy. Candidate. Here, 5 minutes is a policy candidate. Then, the policy update unit 433 updates the new policy candidate as a new policy because the percentage of “PC unused” in the usage record 424 in the same time period for one week does not exceed a predetermined value. Here, the SS start waiting time is updated from 10 minutes to 5 minutes.

  Thereby, the management server 4 can verify the validity of the applied power saving policy 421 by using the usage record 225 and the switching record 224 of the client terminal 2, so that the power saving policy 421 is optimized. Can be set. As a result, the management server 4 can appropriately perform power saving control.

  In the power saving policy 421, the policy for the time zone from 10:00 to 11:00 is applied to the first half of the time zone from 11:00 to 12:00. This is because if the start waiting time until SS becomes small with time transition (here, it becomes smaller from 20 minutes to 10 minutes), it will be switched to the direction of power saving, so the use of the terminal by the user is considered. Therefore, there is a margin in the switching timing.

  By the way, in the said Example, the management server 4 demonstrated the case where the power saving policy 421 was optimized from the daily switching performance 423 and the utilization performance 424. FIG. However, the present invention is not limited to this, and the management server 4 may optimize the power saving policy 421 based on external conditions in addition to the daily switching record 423 and the usage record 424.

  FIG. 11 is a diagram illustrating a modified example of the policy setting process according to the embodiment. The power saving policy 421 shown in FIG. 11 is optimized from external conditions in addition to the daily switching record 423 and the usage record 424. Here, the external condition is an example of scheduling defined for each time. For example, in the scheduling, it is assumed that 12:00 to 13:00 is defined as lunch time, and after 18:00 is defined as after regular time.

  Under such circumstances, for example, the policy update unit 433 optimizes the policy from the daily switching record 423 and the usage record 424. Then, the policy update unit 433 reads the information defined in the scheduling, and sets the time period from 12:00 to 13:00, which is the lunch time included in the read information, as the start waiting time until sleep of 1 minute. . Furthermore, the policy update unit 433 sets the time period after 18:00, which is after the scheduled time included in the read information, as a start waiting time of 1 minute until shutdown. In the time zone from 12:00 to 13:00 during the lunch break and the time zone after 18:00 after the scheduled time, the number of activated terminals is less than the normal work time, and there are few people on the floor where the terminals are located. This is because the security risk increases. In this way, the policy update unit 433 can further optimize the power saving policy 421 from the external conditions.

[Effect of Example]
According to the above embodiment, the client terminal 2 sets the power saving policy 221 that defines the start waiting time until the screen saver screen that consumes less power after the operation signal is not input from the keyboard, the mouse, or the like. Then, the client terminal 2 switches the start waiting time within the range defined in the variable width information 222 using the time from the start to the cancellation of the screen saver screen that has been transitioned based on the power saving policy 221. Further, the client terminal 2 transmits a switching record 224 including the switched start waiting time to the management server 4. The management server 4 updates the power saving policy 421 set in the transmission source client terminal 2 based on the switching record 224 transmitted by the client terminal 2. Then, the client terminal 2 transmits the updated power saving policy 421 to the client terminal 2. According to such a configuration, the management server 4 updates the power saving policy 421 based on the result of the start waiting time switched using the time from the start of the screen saver screen or the like that consumes less power to the release by the user. It was decided. That is, the management server 4 newly updates the power saving policy using the start waiting time switched according to the cancellation by the user, in other words, the usage status by the user. As a result, the management server 4 can feed back the newly updated power saving policy to the client terminal 2 to appropriately perform power saving according to the usage status of the user. That is, the client terminal 2 can appropriately perform power saving according to the usage status of the user.

  Further, the client terminal 2 uses the policy defined in the power saving policy 221 when the time from the start to the release operation of a screen saver screen or the like that consumes less power is immediate and the frequency of the time exceeds a threshold value. Switch to a higher start latency. According to such a configuration, the client terminal 2 switches to a start waiting time larger than the policy if the frequency of immediate release is higher than a threshold even when a screen saver screen or the like is started. Power can be applied.

  In addition, the management server 4 accumulates the switching record 224 transmitted by the client terminal 2. Then, when there are a plurality of switching results, the management server 4 updates the average value of the values included in each switching result as a new policy. According to this configuration, the management server 4 can generate a policy with an average variation from the plurality of switching results 225, and can optimize the policy.

  Moreover, the management server 4 accumulate | stores the switching performance 423 which has the switching performance for every time slot | zone. And the management server 4 updates a new policy for every time slot | zone using the switching performance accumulate | stored for every time slot | zone. According to such a configuration, the management server 4 can optimize the policy for each time zone.

  In addition, the management server 4 acquires information for which a schedule is defined, and updates a new policy for each time zone using the acquired information and the switching results for each time zone. According to such a configuration, the management server 4 can further optimize the policy for each time zone by using information whose schedule is defined as an external condition.

[Programs]
The management server 4 can be realized by mounting each function such as the above-described performance storage unit 432, policy update unit 433, and policy transmission unit 434 in an information processing apparatus such as a known personal computer or workstation. it can. Further, the client terminal 2 can be realized by mounting each function such as the monitoring unit 232, the switching unit 233, and the result transmission unit 234 on an information processing apparatus such as a known personal computer or workstation.

  In addition, each component of each illustrated apparatus does not necessarily need to be physically configured as illustrated. That is, the specific mode of distribution / integration of each device is not limited to that shown in the figure, and all or a part thereof may be functionally or physically distributed or arbitrarily distributed in arbitrary units according to various loads or usage conditions. Can be integrated and configured. For example, the monitoring unit 232 and the switching unit 233 may be integrated as one unit. On the other hand, the switching unit 233 may be distributed to a first switching unit that switches to a start waiting time larger than the policy and a second switching unit that switches to a starting waiting time smaller than the policy. Further, the storage unit 22 such as the power saving policy 221, the switching record 224, and the use record 225 may be connected as an external device of the client terminal 2 via a network. The storage units 42 such as the power saving policy 421, the switching record 423, and the usage record 424 may be connected as an external device of the management server 4 via a network.

  The various processes described in the above embodiments can be realized by executing a program prepared in advance on a computer such as a personal computer or a workstation. Therefore, an example of the management server 4 that executes a policy setting program that realizes the same function as the management server 4 shown in FIG. 1 will be described below. FIG. 12 is a diagram illustrating an example of a management server that executes a policy setting program.

  As illustrated in FIG. 12, the management server 200 includes a CPU 201 that executes various arithmetic processes, an input device 202 that receives input of data from a user, and a display 203. In addition, the management server 200 includes a reading device 204 that reads a program and the like from a storage medium, and an interface device 205 that exchanges data with another computer via a network. The management server 200 also includes a RAM 206 that temporarily stores various information and a hard disk device 207. The devices 201 to 207 are connected to the bus 208.

  The hard disk device 207 stores a policy setting program 207a and policy setting related information 207b. The CPU 201 reads the policy setting program 207 a and develops it in the RAM 206. The policy setting program 207a functions as a policy setting process 206a.

  For example, the policy setting process 206 a corresponds to the initial policy application unit 431, the result storage unit 432, the policy update unit 433, and the policy transmission unit 434. The policy setting related information 207 b corresponds to the power saving policy 421, the variable width division method 422, the switching record 423, and the usage record 424.

  The policy setting program 207a is not necessarily stored in each hard disk device 207 from the beginning. For example, the policy setting program 207a is stored in a “portable physical medium” such as a flexible disk (FD), a CD-ROM, a DVD disk, a magneto-optical disk, or an IC card inserted into the management server 200. Then, the management server 200 may read out and execute the policy setting program 207a from these.

  Further, an example of the client terminal 2 that executes a policy setting program that realizes the same function as the client terminal 2 shown in FIG. 1 will be described. An example of the policy setting program is a software program called an agent. FIG. 13 is a diagram illustrating an example of a client terminal that executes a policy setting program.

  As illustrated in FIG. 13, the client terminal 300 includes a CPU 301 that executes various arithmetic processes, an input device 302 that receives input of data from a user, and a display 303. Further, the client terminal 300 includes a reading device 304 that reads a program and the like from a storage medium, and an interface device 305 that exchanges data with other computers via a network. The client terminal 300 includes a RAM 306 that temporarily stores various information and a hard disk device 307. The devices 301 to 307 are connected to the bus 308.

  The hard disk device 307 stores a policy setting program 307a and policy setting related information 307b. The CPU 301 reads the policy setting program 307 a and expands it in the RAM 306. The policy setting program 307a functions as a policy setting process 306a.

  For example, the policy setting process 306 a corresponds to the policy setting unit 231, the monitoring unit 232, the switching unit 233, and the result transmission unit 234. The policy setting related information 307 b corresponds to the power saving policy 221, the variable width division method 222, the start history 223, the switching record 224, and the usage record 225.

  The policy setting program 307a is not necessarily stored in each hard disk device 307 from the beginning. For example, the policy setting program 307a is stored in a “portable physical medium” such as a flexible disk (FD), a CD-ROM, a DVD disk, a magneto-optical disk, or an IC card inserted into the client terminal 300. The client terminal 300 may read out and execute the policy setting program 307a from these.

  The following supplementary notes are further disclosed with respect to the embodiments including the above examples.

(Appendix 1) A policy setting system including a management server and a terminal,
The terminal
The transition time, the transition condition, and the transition range of the transition time, which are received from the management server and mutually transition from the first state in the terminal to the second state with lower power consumption than the first state, A storage unit for storing a policy defined for each category;
Transition time for changing the value of the transition time within the change range based on the time from the transition to the second state to the transition to the first state based on the policy stored by the storage unit An adjustment unit;
A first transmission unit that transmits a transition time adjustment result by the transition time adjustment unit to the management server;
The management server
An updating unit for updating a policy set in a transmission source terminal based on the transition time adjustment results transmitted by the first transmission unit;
And a second transmission unit that transmits the policy updated by the update unit to the terminal.

(Appendix 2) The terminal includes a release operation recording unit that records a release operation for transition from the second state to the first state,
When the time from the transition to the second state to the release operation recorded by the release operation recording unit is within a predetermined time and the frequency in the time section exceeds the threshold, the transition time adjustment unit The policy setting system according to claim 1, wherein the value is changed to a transition time value larger than the policy stored by the storage unit.

(Additional remark 3) The accumulation | storage part which accumulate | stores the transition time adjustment performance transmitted by the said 1st transmission part,
The update unit updates an average value of transition time values included in each transition time adjustment record as a new policy when there are a plurality of transition time adjustment records stored by the storage unit. The policy setting system according to appendix 1 or appendix 2.

(Additional remark 4) The said accumulation | storage part accumulate | stores transition time adjustment results for every time division,
The policy setting system according to supplementary note 3, wherein the update unit updates a new policy for each time segment using the transition time adjustment record accumulated for each time segment by the accumulation unit.

(Additional remark 5) The said update part acquires the information by which the schedule was prescribed | regulated, and updates a new policy for every time division using the acquired information and the transition time adjustment performance accumulate | stored for every time division. The policy setting system according to appendix 4, characterized by:

(Appendix 6) A policy setting method executed by a policy setting system including a management server and a terminal,
The terminal is
Storing a policy that defines a transition time from a first state to a second state that consumes less power than the first state;
Using the time from the start of the second state that has transitioned based on the policy stored by the storing process to the transition to the first state, the transition time is within a predetermined range based on the policy. Switch values,
Sending the switching result including the value switched by the switching process to the management server,
The management server
Based on the switching record transmitted by the process of transmitting, update the policy set in the terminal of the transmission source,
A policy setting method comprising: each process of transmitting a policy updated by the updating process to the terminal.

(Appendix 7) A management server for managing terminals,
Switching indicating the result of switching the value of the transition time within a predetermined range based on a policy that defines the transition time from the first state to the transition to the second state that consumes less power than the first state An update unit that updates the policy set in the terminal based on the switching results transmitted from the terminal that are actual results;
A management server, comprising: a transmission unit that transmits the policy updated by the update unit to the terminal.

(Appendix 8) A terminal capable of communicating with the management server,
A storage unit that stores a policy that defines a transition time from a first state to a second state that consumes less power than the first state;
The value of the transition time within a predetermined range based on the policy, using the time from the start of the second state transitioned based on the policy stored by the storage unit to the transition to the first state A switching unit for switching between,
A transmission unit that transmits a switching record including a value switched by the switching unit to the management server.

DESCRIPTION OF SYMBOLS 1 Policy setting system 2 Client terminal 3 Management terminal 4 Management server 21, 41 Communication part 22, 42 Storage part 23, 43 Control part 221, 421 Power saving policy 222, 422 Variable width information 223 Start history 224, 423 Switching performance 225, 424 Usage record 231 Policy setting unit 232 Monitoring unit 233 Switching unit 234 Result transmission unit 431 Initial policy application unit 432 Result storage unit 433 Policy update unit 434 Policy transmission unit

Claims (6)

A policy setting system including a management server and a terminal,
The terminal
The transition time, the transition condition, and the transition range of the transition time, which are received from the management server and mutually transition from the first state in the terminal to the second state with lower power consumption than the first state, A storage unit for storing a policy defined for each category;
Transition time for changing the value of the transition time within the change range based on the time from the transition to the second state to the transition to the first state based on the policy stored by the storage unit An adjustment unit;
A first transmission unit that transmits a transition time adjustment result by the transition time adjustment unit to the management server;
The management server
An updating unit for updating a policy set in a transmission source terminal based on the transition time adjustment results transmitted by the first transmission unit;
And a second transmission unit that transmits the policy updated by the update unit to the terminal. The terminal includes a release operation recording unit that records a release operation for transition from the second state to the first state,
When the time from the transition to the second state to the release operation recorded by the release operation recording unit is within a predetermined time and the frequency in the time section exceeds the threshold, the transition time adjustment unit The policy setting system according to claim 1, wherein the policy setting system switches to a transition time value larger than the policy stored by the storage unit. An accumulation unit for accumulating the transition time adjustment results transmitted by the first transmission unit;
The update unit updates an average value of transition time values included in each transition time adjustment record as a new policy when there are a plurality of transition time adjustment records stored by the storage unit. The policy setting system according to claim 1 or 2. The accumulation unit accumulates transition time adjustment results for each time segment,
The policy update system according to claim 3, wherein the update unit updates a new policy for each time segment using the transition time adjustment results accumulated for each time segment by the accumulation unit. The update unit acquires information with a specified schedule, and updates a new policy for each time segment using the acquired information and the transition time adjustment record accumulated for each time segment. The policy setting system according to claim 4. A policy setting method executed by a policy setting system including a management server and a terminal,
The terminal is
Storing a policy that defines a transition time from a first state to a second state that consumes less power than the first state;
Using the time from the start of the second state that has transitioned based on the policy stored by the storing process to the transition to the first state, the transition time is within a predetermined range based on the policy. Switch values,
Sending the switching result including the value switched by the switching process to the management server,
The management server
Based on the switching record transmitted by the process of transmitting, update the policy set in the terminal of the transmission source,
A policy setting method comprising: each process of transmitting a policy updated by the updating process to the terminal.

Images