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Control device and control method

A technology for controlling equipment and processing equipment, which is applied in the direction of multi-programming devices, data processing power supplies, program startup/switching, etc., and can solve problems such as waste of power consumption

Inactive Publication Date: 2013-04-24
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, if the power to all elements is started at the same time, the element with the shorter start time will remain in the wait state after it finishes going to the run state, until the element with the longer start time goes to the run state, and there is a wait state period The disadvantage of power dissipation will be wasted

Method used

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  • Control device and control method

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Experimental program
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Embodiment approach

[0028] According to an embodiment, the control device includes a receiving unit, a judging unit, an estimating unit, a deciding unit, an indicating unit and a sending unit. The receiving unit is configured to receive an interrupt request requesting a processing device including a plurality of elements capable of individually undergoing voltage control to perform interrupt processing. The judging unit is configured to judge the state of each element. The estimating unit is configured to estimate, for each element, an activation time representing a time required for the element to become an operation mode representing an operable state after power is supplied, based on a determination result of the determination unit. The decision unit is configured to decide a time start representing a timing at which power supply is to be started for each element based on a difference in start-up time between the elements. The instructing unit is configured to instruct the power supply unit f...

no. 1 approach

[0030] figure 1 is a block diagram illustrating an example of a schematic configuration of the control device 100 according to the first embodiment. The control device 100 receives an interrupt request requesting the processing device 120 to perform interrupt processing from each of the plurality of devices 1 to n, and transmits the received interrupt request to the processing device 120 . The devices are devices each having at least one of a function of inputting data from the outside to the processing device 120 and a function of outputting data from the processing device 120 to the outside, examples of which include a keyboard, HDD, network interface unit and timer. For example, processing device 120 may include a central processing unit (CPU) 121 and memory 122 .

[0031] In an idle state in which processing is not performed, the processing device 120 according to this embodiment becomes a power saving state (sleep state) in which power supply to a plurality of elements ...

no. 2 approach

[0050] Next, a second embodiment will be described. In the second embodiment, if the processing device 120 is in the active state (running state) in which the processing device 120 is executing processing, the control device 100 transmits the received interrupt request to the processing device 120, or, if the processing device 120 is in In the idle state where the processing device 120 does not perform any processing, the control device 100 sends the received interrupt request to the processing device 120 only when a predetermined condition is met. The specific details will be described below. The same parts as those of the first embodiment will be denoted by the same reference numerals, and description thereof will not be repeated as appropriate.

[0051] Figure 7 is a block diagram illustrating an example of the control device 100 according to the second embodiment. Such as Figure 7 As explained in , the difference between the control device 100 and the first embodimen...

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Abstract

A control device and a control method are disclosed. According to an embodiment, the control device includes a receiving unit, a judging unit, an estimating unit, a deciding unit, a directing unit, and a sending unit. The receiving unit is configured to receive an interrupt request requesting a processing device that includes elements capable of being individually subjected to voltage control to execute an interrupt process. The judging unit is configured to judge a state of the elements. The estimating unit is configured to estimate a start-up time for the element to change into an operating mode after power is supplied. The deciding unit is configured to decide a starting point in time at which power supply is to be started on basis of a difference in the start-up times between the elements. The directing unit is configured to direct a power supply unit for supplying power to the elements. The sending unit is configured to send the interrupt request.

Description

technical field [0001] The embodiments described herein generally relate to control devices and control methods. Background technique [0002] In the related art, each time an interrupt request requesting the processing device to perform interrupt processing is received, a technique of causing a processing device (eg, a processor) to perform interrupt processing associated with the received interrupt request is known. In this technique, when a processing device receives an interrupt request during an idle state in which the processing device does not perform any processing, the processing device changes from the idle state to an active state in which the processing device can perform the interrupt processing. After execution of the interrupt processing, the processing device becomes idle again. [0003] As one example of a method of reducing power consumption of a processing device, a method of reducing power supplied to a processing device in an idle state to bring the pro...

Claims

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Application Information

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IPC IPC(8): G06F1/32G06F9/48
CPCG06F1/32G06F1/26G06F9/48
Inventor 木村哲郎金井达德外山春彦藤崎浩一春木洋美樽家昌也白井智柴田章博
Owner KK TOSHIBA
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