WO2015060174A1

WO2015060174A1 - Information processing device, information processing device control method, and information processing device control program

Info

Publication number: WO2015060174A1
Application number: PCT/JP2014/077450
Authority: WO
Inventors: 農佐藤
Original assignee: シャープ株式会社
Priority date: 2013-10-25
Filing date: 2014-10-15
Publication date: 2015-04-30
Also published as: JP2015084185A

Abstract

An objective of the present program is to optimize GPU power consumption without impairing performance. Provided is an information processing device, comprising: a parameter computation unit (103) which determines a parameter using a parameter table (101) which associates an application with a parameter having the lowest clock among parameters in which clocks satisfying a rendering request of that application are included in the setting ranges thereof; and a GUI driver (12) which sets the clock of the display processing unit, using the determined parameter.

Description

Information processing apparatus, information processing apparatus control method, and information processing apparatus control program

The present invention relates to an information processing device that controls display, and more particularly to an information processing device that controls a clock of a GPU.

Recently, due to the sophistication and refinement of the contents displayed on the display unit of mobile terminals and the like, the processing power of GPU (Graphics の Processing Unit) has also improved. Along with this, the power consumption accompanying the operation of the GPU is also increasing. A portable terminal often operates on a battery, and an increase in power consumption is undesirable because it accelerates battery consumption. For this reason, there is a demand for a mechanism for suppressing power consumption without impairing the performance of the GPU.

Therefore, for example, Patent Document 1 discloses a technique for controlling the clock of the GPU according to the remaining amount of FIFO (First In First Out) of the drawing request. Patent Document 2 discloses a technique for adjusting the GPU clock by comparing the refresh rate determined by the system with the maximum number of frames calculated from the rendering request and the processing performance of the GPU.

Japanese Patent Publication “Japanese Patent Laid-Open No. 09-282042” (published on October 31, 1997) Japanese Patent Publication “Japanese Patent Laid-Open No. 2007-164071 (published on June 28, 2007)”

However, in the conventional technology as described above, it is difficult to say that the GPU is controlled in accordance with the application, and it cannot be said that the GPU is always optimally controlled.

Furthermore, in the cited document 1, since the GPU is controlled by the remaining amount of the FIFO, the GPU is not controlled unless the remaining amount of the FIFO reaches the threshold value. This means that drawing requests are accumulated in the FIFO, and processing for drawing requests from applications is delayed. Further, since the FIFO is empty at the start of drawing, the GPU clock is set to the lowest state, so that depending on the application, the performance may be insufficient, and the drawing speed may not be able to catch up with the application request.

The present invention has been made in view of the above problems, and an object of the present invention is to realize an information processing apparatus and the like capable of optimal GPU control without impairing GPU performance.

In order to solve the above problem, an information processing apparatus according to an aspect of the present invention provides an information processing apparatus that can change a clock of a display processing unit according to a parameter that specifies a clock setting range of the display processing unit. Detecting means for detecting the activation of the application, and when the detecting means detects the activation of the application, the parameter having the smallest clock among the parameters including the clock satisfying the drawing request of the application in the setting range, and the application A parameter determination unit that determines a parameter to be used when starting the application, and a display that sets the clock of the display processing unit using the parameter determined by the parameter determination unit And a processing unit control means.

An information processing apparatus control method according to an aspect of the present invention is an information processing apparatus control method capable of changing a clock of the display processing unit according to a parameter that specifies a setting range of a clock of the display processing unit, A detection step for detecting activation of the application, and a parameter having the smallest clock among the parameters including the clock that satisfies the drawing request of the application in the setting range when the activation of the application is detected in the detection step, and the application And a parameter determination step for determining a parameter to be used when starting the application, and a clock for the display processing unit is set using the parameter determined in the parameter determination step. A display processing unit control step A.

According to one aspect of the present invention, the clock of the display processing unit can be optimized for each application without delaying the drawing request from the application, and the power consumption of the display processing unit can be optimized. There is an effect.

It is a block diagram which shows the principal part structure of the information processing apparatus which concerns on Embodiment 1 of this invention. (A), (b) is a figure for demonstrating the derivation method of the parameter used with the said information processing apparatus. (A), (b) is a figure for demonstrating the derivation method of the parameter used with the said information processing apparatus. (A), (b) is a figure for demonstrating another derivation | leading-out method of the parameter used with the said information processing apparatus. It is a figure which shows the example of the parameter table used with the said information processing apparatus. It is a flowchart which shows the flow of a process in the said information processing apparatus. It is a flowchart which shows the flow of the update process of the parameter in the said information processing apparatus. It is a flowchart which shows the flow of the addition process of the said parameter. It is a flowchart which shows the flow of the deletion process of the said parameter. It is a block diagram which shows the principal part structure of the information processing apparatus which concerns on Embodiment 2 of this invention. It is a figure which shows the example of the parameter table used with the said information processing apparatus.

Embodiment 1
Hereinafter, embodiments of the present invention will be described in detail. First, prior to description of the information processing apparatus 1 according to the present embodiment, a method for deriving a clock parameter of a GPU (display processing unit) used in the information display apparatus 1 will be described with reference to FIGS.

Here, the parameter is for setting the clock of the GPU in the information display device 1, and is a value for determining an initial value, a maximum value, and a minimum value. In the information processing apparatus 1 according to the present embodiment, the GPU clock becomes an initial value when the GPU is started, and thereafter varies between a minimum value and a maximum value according to a load (for example, actual operation time per unit time). To do. In this embodiment, the GPU clock parameter is set for each application.

[Parameter derivation method 1]
The optimal GPU clock for an application is strongly dependent on the system (software) and GPU (hardware) in the device. Therefore, in the present embodiment, the application is actually operated, and the optimum parameter is determined from the observation result. Note that the processing performance improves as the GPU clock increases, but the power consumption also increases.

Fig. 2 (a) shows an equal load when the GPU has four clocks 0 to 3 (0 is OFF and 3 is the highest), the initial value is 2, the minimum value is 1, and the maximum value is 3. It is a figure which shows the observation result when the application which performs drawing of this at equal intervals is performed (for example, screen scroll operation). In FIG. 2, a square black dot indicates a drawing request from the application, and a solid line indicates an observed GPU clock. As shown in FIG. 2A, when an application that performs drawing with equal load at an equal interval is executed, the GPU clock is 2 from the first drawing request to the 4th time, and then becomes 1, 1 continues as it is.

Considering that drawing of equal load is performed at equal intervals, the interval where the GPU clock is 2 is the interval required until the load is adjusted, in order to respond to the drawing request of the application Can be assumed that a GPU clock of 1 is sufficient. Therefore, the hatched portion in FIG. 2A is an unnecessary clock, and it is considered that wasteful power is consumed. Therefore, the initial value is set to 1 for such an application. Thereby, the power consumption accompanying GPU processing can be reduced. The maximum value may be set to 1 instead of the initial value.

(B) in FIG. 2 shows an observation result when the initial value is set to 1 and an application similar to (a) in FIG. 2 is executed. As shown in FIG. 2B, when the initial value is set to 1, it can be seen that the GPU clock is 1 from the beginning to the end in response to a drawing request from the application.

(A) in FIG. 3 is discrete when the GPU has four clocks of 0 to 3 (0 is OFF and 3 is the highest), the initial value is 2, the minimum value is 1, and the maximum value is 3. It is a figure which shows the observation result when executing the application which draws various equal load (for example, repetition of opening and closing of a menu screen). Similar to FIG. 2, in FIG. 3, a square black dot indicates a drawing request from the application, and a solid line indicates an observed GPU clock. As shown in FIG. 3A, when an application that performs drawing with a discrete equal load is executed, the GPU clock is 2 immediately after the drawing request, and is 0 after a certain time has elapsed. If the load of the drawing request from the application is approximately the same as that in the case of FIG. 2 described above, it can be estimated that the GPU clock is 2 to 0 before the load is adjusted. Therefore, it can be estimated that a GPU clock of 1 is sufficient to meet the drawing request of the application. That is, the hatched portion in FIG. 3A is an unnecessary clock, and it is considered that wasteful power is consumed. Therefore, the initial value is set to 1 for such an application. Thereby, the power consumption accompanying GPU processing can be reduced. The maximum value may be set to 1 instead of the initial value.

(B) in FIG. 3 shows an observation result when the initial value is set to 1 and an application similar to (a) in FIG. 3 is executed. As shown in FIG. 3B, when the initial value is set to 1, it can be seen that the GPU clock can be 1 in response to the drawing request from the application.

[Parameter derivation method 2]
This derivation method derives optimum parameters from the drawing load of the application and the performance of the GPU. Specifically, the drawing load of the application and the drawing load that can be processed for each clock of the GPU are converted into numerical values, and parameters are derived using this. The drawing load can be determined by, for example, the drawing area.

FIG. 4A is a diagram illustrating an example of a relationship between a GPU clock and a drawing load that can be processed by the clock. In the example shown in the correspondence table 401 of FIG. 4A, the drawing load that can be processed with clock 0 is 100, the drawing load that can be processed with clock 1 is 200, the drawing load that can be processed with clock 2 is 200, and the processing is performed with clock 3 The possible drawing load is 300. FIG. 4B is a diagram illustrating an example of the drawing load of the application. In the example shown in the correspondence table 402 of FIG. 4B, the drawing load is 20 in the operation case A, the drawing load is 80 in the operation case B, the drawing load is 50 in the operation case C, and the drawing load is 30 in the operation case D. It has become.

In the case of the example shown in FIGS. 4A and 4B, since it is clear that a clock 1 can respond to a drawing request from an application, the initial value or maximum of the clock of the GPU The value is 1. Thereby, the power consumption accompanying GPU processing can be reduced.

[Configuration of Information Processing Apparatus 1]
Next, with reference to FIG. 1, the structure of the main part of the information processing apparatus 1 according to the present embodiment will be described. FIG. 1 is a block diagram showing a main configuration of the information display device 1. As shown in FIG. 1, in the information display device 1, the system 10 that has received a drawing request from the

applications

51 and 52 issues a drawing request to the GPU driver (display processing unit control means) 11, and the GPU driver 11 sends the GPU 12 to the GPU 12. In this configuration, drawing is instructed. In FIG. 1, only two

applications

51 and 52 are shown, but the number of applications is not limited to this. One may be sufficient and three or more may be sufficient.

Applications

51 and 52 are application blocks, and make drawing requests to the system 10.

The system 10 includes a parameter table 101, a control unit 102, a parameter calculation unit (parameter determination unit) 103, and a detection unit (detection unit) 104. The parameter table 101 is a table in which application names are associated with individual parameters. The parameter table 101 receives an application name from the control unit 102 and returns a corresponding individual parameter. If the corresponding application name does not exist, the default value is returned. FIG. 5 shows a data structure example 501 of the parameter table 101. As shown in FIG. 5, in the parameter table 101, application names and parameters (initial values, minimum values, maximum values) are associated with each other. In the structural example 501 shown in FIG. 5, the application 1 is associated with the initial value Init ₁ , the minimum value Min ₁ , and the maximum value Max _1, and the application 2 is associated with the initial value Init ₂ , the minimum value Min ₂ , and the maximum value Max ₂ . Are associated with each other in the same manner. In addition, an initial value Init _d , a minimum value Min _d , and a maximum value Max _d are associated as default values.

The control unit 102 controls the entire information display device 1. The control unit 102 receives notification of application activation / termination from the detection unit 104. When the application activation notification is received, the activated application name is passed to the parameter table 101, and the corresponding parameter is received. Then, the parameter calculation unit 103 is passed the application name and the corresponding parameter. Further, the control unit 102 receives a drawing request from the

applications

51 and 52 and issues a drawing request to the GPU driver 11.

The parameter calculation unit 103 calculates the GPU clock parameter using the application name and the corresponding parameter passed from the control unit, and passes the result to the GPU driver 11.

Specifically, when there is one active application, the parameter calculation unit 103 calculates a parameter corresponding to the application as a clock parameter of the GPU 12. Further, when there are a plurality of running applications, a parameter corresponding to the application displayed in the foreground is calculated as a clock parameter of the GPU 12.

Even if multiple applications are activated, it is considered that the application to be operated by the user is displayed in the foreground. Therefore, it is possible to appropriately control the GPU 12 by controlling the clock of the GPU 12 using the parameter corresponding to the application displayed in the foreground.

It should be noted that an application other than the application displayed in the foreground can also make a drawing request. Therefore, the priority of the drawing request by the application displayed in the foreground is set to the highest priority, for example, by the drawing request by an application other than the application displayed in the foreground. It is desirable to adopt a configuration that does not delay the processing of drawing requests.

The detection unit 104 detects the start and end of the application. Then, the detected application name and detection type (activation or termination) are transmitted to the control unit 102.

The GPU driver 11 controls the GPU 12. Specifically, the GPU driver 11 receives a drawing request from the system 10 and issues a drawing request to the GPU 12. Further, the GPU driver 11 selects an optimal clock of the GPU 12 from the GPU clock parameter received from the system 10 and the load of the GPU 12 received from the GPU 12, and sets the GPU 12.

The GPU (Graphics Processing Unit) 12 is a processing unit that performs image display processing.

[Flow of processing in information processing apparatus 1]
Next, a processing flow in the information display apparatus 1 will be described with reference to FIGS. FIG. 6 is a flowchart showing the flow of processing in the information display apparatus 1.

When an application is activated in the information processing apparatus 1 (S101), the detection unit 104 detects activation (S102), and notifies the control unit 102 of the detected application name. The control unit 102 notifies the parameter table 101 of the notified application name and receives a corresponding parameter. Then, the parameter calculation unit 103 is notified of the application name and the corresponding parameter. Then, the parameter calculation unit 103 executes parameter addition request processing (S103). Details of the parameter addition request processing will be described later.

After executing the parameter addition request process, the parameter calculation unit 103 notifies the GPU driver 11 of the calculated parameter. The GPU driver 11 controls the clock of the GPU 12 according to the notified parameter (S104), and the system 10 executes application processing by the GPU operating by this clock control (S105). When the application ends (S106), the detection unit 104 detects the end of the application (S107), and notifies the control unit 102 of the detected application name. The control unit 102 notifies the parameter calculation unit 103 of the notified application name. And the parameter calculation part 103 performs a parameter deletion process (S108). Details of the parameter deletion process will be described later. The above is the flow of processing in the information display device 1.

Next, the flow of parameter addition request processing will be described with reference to FIGS. 7 and 8 are flowcharts showing the flow of parameter addition request processing. First, the parameter calculation unit 103 adds the application name notified from the control unit 102 and the corresponding parameter as elements to the internal table (S11). And the parameter calculation part 103 performs GPU parameter update process (S12).

As shown in FIG. 7, in the GPU parameter update process, the parameter calculation unit 103 determines whether or not an element of the internal table is empty (S31). If it is empty (YES in S31), the default value (S32) is notified to the GPU driver 11 as the calculated GPU parameter (S35). On the other hand, if it is not empty (NO in S31), the parameter calculation unit 103 determines whether there is one element (S36). If there is one element (YES in S36), the parameter (S33) indicated by the element is notified to the GPU driver 11 as a calculated parameter (S35). If there are a plurality of elements (NO in S36), the GPU driver 11 is notified as a calculated parameter of the parameter indicated by the element corresponding to the frontmost application (S35).

Also, the flow of processing (parameter deletion processing) when the detection unit 104 detects the end of the application and deletes the parameter is as shown in FIG. That is, upon receiving the parameter deletion request, the parameter calculation unit 103 deletes the corresponding element from the internal table (S21). Then, GPU parameter update processing is executed (S22).

[Embodiment 2]
The following will describe another embodiment of the present invention with reference to FIGS. For convenience of explanation, members having the same functions as those described in the embodiment are given the same reference numerals, and descriptions thereof are omitted.

In the information processing apparatus 2 according to the present embodiment, what is different from the above embodiment is a block that holds the parameter table and the content of the parameter table. As shown in FIG. 10, in this embodiment, applications 51 'and 52' hold a parameter table. Since the applications 51 'and 52' hold the parameter table, it is possible to set the GPU clock parameter according to the operation content of the application, and to control the GPU clock more precisely.

The applications 51 ′ and 52 ′ are application blocks similar to the

applications

51 and 52 described above, and make a drawing request to the system 10 ′. The difference from the

applications

51 and 52 described above is that the parameter table 101A (B) is held and parameters corresponding to the operation case are transmitted to the system 10 ′. FIG. 11 shows a data structure example 1101 of the parameter table 101A (B) held by the applications 51 ′ and 52 ′. As shown in FIG. 11, the operation case and the parameters (initial value, minimum value, maximum value) correspond to each other. In the structural example 1101 shown in FIG. 11, the operation case A is associated with the initial value Init _A , the minimum value Min _A , and the maximum value Max _A, and the operation case B is associated with the initial value Init _B , the minimum value Min _B , and the maximum value Max. _B is associated.

The system 10 'includes a control unit 102' and a parameter calculation unit 103 '. The control unit 102 ′ controls the entire system, receives parameter notifications from the applications 51 ′ and 52 ′, and passes them along with the application name to the parameter calculation unit 103 ′. The control unit 102 ′ receives a drawing request from the applications 51 ′ and 52 ′ and issues a drawing request to the GPU driver 11.

The parameter calculation unit 103 ′ calculates a GPU clock parameter and notifies the GPU driver 11 of the result, and the processing content is the same as the parameter calculation unit 103 in the first embodiment. The GPU driver 11 and the GPU 12 are the same as those in the first embodiment.

[Embodiment 3]
In the above-described embodiment, a configuration has been described in which, when a plurality of applications are activated, parameters corresponding to the frontmost application are used. In this embodiment, when a plurality of applications are activated, parameters different from those in the above embodiment are used.

[Configuration using the highest value of all applications]
The parameter calculation unit is configured to notify the GPU driver of the highest value among the clock parameters of the GPU corresponding to all the activated applications as the calculation result. For example, two applications are running, parameters corresponding to application 1 are an initial value 2, minimum value 1, maximum value 2, and parameters corresponding to application 2 are an initial value 1, minimum value 1, maximum value 3. In this case, the parameter calculation unit notifies the GPU driver of the initial value 2, the minimum value 1, and the maximum value 3.

With this configuration, even if any of a plurality of applications makes a drawing request, it can be processed by a GPU with an appropriate clock.

[Configuration using the total value of all applications]
In the configuration of the second embodiment described above, the parameter calculation unit sends the smallest clock among GPU clocks capable of processing a drawing load exceeding the total of the maximum drawing loads of each application to the GPU driver as a calculated parameter. Notice.

For example, when the drawing load of the operation case A of the application 1 is 20, the drawing load of the operation case B is 80, the drawing load of the operation case C is 50, and the drawing load of the operation case D is 30 (in FIG. 4B). ), The drawing load of the application 1 is 80 which is the maximum value. When the drawing load of the operation case A of the application 2 is 60 and the drawing load of the operation case B is 90, the drawing load of the application 2 is 90.

And when only two applications of application 1 and application 2 are running, the total value of the drawing load of the application is 80 + 90 = 170. At this time, if the rendering load that can be processed in the GPU is a value as shown in FIG. 4A, the initial value of the parameter that has calculated the clock 2 that exceeds the rendering load 170 and is the smallest. Alternatively, the GPU driver is notified as the maximum value.

Also, the parameter may be set using the total drawing load for each operation case. For example, when the application 1 is in the state of the operation case A (drawing load: 20) and the application 2 is in the state of the operation case B (drawing load: 70), the clock that exceeds the total of both 90 and is the smallest. 1 (Processable drawing load: 100) is adopted. Further, when the application 1 is in the operation case C (drawing load: 50) and the application 2 is in the operation case D (drawing load: 80), the clock that exceeds both 130 and is the smallest. 2 (Processable drawing load: 200) is adopted. As a result, it is possible to set the clock corresponding to the operation case, and to control the GPU more finely.

[Additional Notes]
In the above-described embodiment, the configuration for suppressing the power consumption of the GPU has been described. However, the processing performance can be improved depending on the parameter setting values. For example, when the default value 2, the minimum value 1, and the maximum value 3 are changed to the initial value 2, the minimum value 2, and the maximum value 3, the GPU clock does not decrease to 1. Thereby, the processing performance of GPU can be improved. As described above, the configuration in which the parameters can be set can be used not only to reduce power consumption but also to improve processing performance.

[Example of software implementation]
The control block (especially the system 10 (10 ′) and the GPU driver 11) of the information processing apparatus 1 may be realized by a logic circuit (hardware) formed in an integrated circuit (IC chip) or the like, or a CPU (Central It may be realized by software using a Processing Unit.

In the latter case, the information display device 1 includes a CPU that executes instructions of a program that is software that realizes each function, and a ROM (Read Only Memory) in which the program and various data are recorded so as to be readable by a computer (or CPU). Alternatively, a storage device (these are referred to as “recording media”), a RAM (Random Access Memory) for expanding the program, and the like are provided. And the objective of this invention is achieved when a computer (or CPU) reads the said program from the said recording medium and runs it. As the recording medium, a “non-temporary tangible medium” such as a tape, a disk, a card, a semiconductor memory, a programmable logic circuit, or the like can be used. The program may be supplied to the computer via an arbitrary transmission medium (such as a communication network or a broadcast wave) that can transmit the program. The present invention can also be realized in the form of a data signal embedded in a carrier wave in which the program is embodied by electronic transmission.

[Summary]
The information processing apparatus according to the first aspect of the present invention includes a detection unit (detection) that detects activation of an application in an information processing apparatus that can change a clock of the display processing unit according to a parameter that specifies a clock setting range of the display processing unit. Unit 104) and when the detection unit detects the activation of the application, the parameter having the smallest clock among the parameters including the clock satisfying the drawing request of the application in the setting range is associated with the application. Using the parameter table, parameter determination means (parameter calculation section 103) for determining a parameter to be used when starting the application, and setting the clock of the display processing section using the parameter determined by the parameter determination means Display processing unit control means (GPU driver 11) , And a.

According to the above configuration, the clock of the display processing unit can be controlled using a parameter that satisfies the drawing request of the application and has the smallest clock of the display processing unit for each activated application. Accordingly, the clock of the display processing unit can be optimized and the power consumption of the display processing unit can be optimized without delaying the drawing request from the application for each application.

The information processing apparatus according to aspect 2 of the present invention is the information processing apparatus according to aspect 1, wherein the parameter determination unit corresponds to the application displayed on the forefront of the display unit when there are a plurality of application activations detected by the detection unit. The parameter to be determined may be determined as a parameter when the application is activated.

When multiple applications are running, there is a high possibility that the application that is the user's operation target is the one displayed on the foreground of the display unit. Therefore, if the parameter corresponding to the application displayed on the forefront of the display unit is set as in the above configuration, the clock of the display processing unit can be optimized in response to a drawing request from the application.

In the information processing apparatus according to aspect 3 of the present invention, in the

aspect

1 or 2, the parameter may specify an initial value, a minimum value, and a maximum value of the clock.

According to the above configuration, the initial value, minimum value, and maximum value of the clock of the display processing unit can be set by parameters. This makes it possible to set an appropriate clock in response to a drawing request from an application.

An information processing device control method according to aspect 4 of the present invention is an information processing device control method capable of changing a clock of a display processing unit according to a parameter that specifies a setting range of a clock of the display processing unit. A detection step for detecting activation, and when the activation of the application is detected in the detection step, a parameter having the smallest clock among the parameters including the clock that satisfies the drawing request of the application in a setting range and the application A parameter determining step for determining a parameter to be used when the application is started using the associated parameter table, and a display process for setting the clock of the display processing unit using the parameter determined in the parameter determining step Part control step.

Thereby, the same effect as in the first aspect is obtained.

The information processing apparatus according to each aspect of the present invention may be realized by a computer. In this case, the information processing apparatus is realized by the computer by causing the computer to operate as each unit included in the information processing apparatus. A control program for the information processing apparatus and a computer-readable recording medium on which the control program is recorded also fall within the scope of the present invention.

The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention. Furthermore, a new technical feature can be formed by combining the technical means disclosed in each embodiment.

The present invention can be used in an information processing apparatus that performs display control.

1, 2 Information processing device 10, 10 'system 11 GPU driver (display processing unit control means)
12 GPU (display processing unit)
101, 101A, 101B Parameter table 102, 102 'Control unit 103, 103' Parameter calculation unit (parameter determination means)
104 Detection part (detection means)

Claims

In the information processing apparatus capable of changing the clock of the display processing unit by a parameter that specifies the setting range of the clock of the display processing unit,
Detection means for detecting the activation of the application;
When the detection unit detects the activation of the application, a parameter table in which the application is associated with a parameter having the smallest clock among the parameters including the clock satisfying the drawing request of the application in a setting range is used. , Parameter determining means for determining a parameter to be used when starting the application,
Display processing unit control means for setting the clock of the display processing unit using the parameter determined by the parameter determination unit;
An information processing apparatus comprising:
The parameter determination means determines the parameter corresponding to the application displayed in the forefront of the display unit as a parameter when starting the application when there are a plurality of application activations detected by the detection means. The information processing apparatus according to claim 1.
2. The information processing apparatus according to claim 1, wherein the parameter specifies an initial value, a minimum value, and a maximum value of the clock.
A control method of an information processing apparatus capable of changing a clock of the display processing unit by a parameter specifying a setting range of a clock of the display processing unit,
A detection step for detecting application launch;
When the activation of the application is detected in the detection step, a parameter table that associates the parameter with the smallest clock among the parameters including the clock that satisfies the drawing request of the application in the setting range and the application is used. A parameter determining step for determining a parameter to be used when starting the application;
A display processor control step for setting the clock of the display processor using the parameters determined in the parameter determination step;
A method for controlling an information processing apparatus, comprising:
An information processing apparatus control program for causing a computer to function as the information processing apparatus according to any one of claims 1 to 3, wherein the information processing apparatus control program causes the computer to function as each of the above means.