JP2006072991A5

JP2006072991A5 -

Info

Publication number: JP2006072991A5
Application number: JP2005225247A
Authority: JP
Filing date: 2005-08-03
Publication date: 2008-06-05
Anticipated expiration: 2025-08-03

Claims

A power saving processing device that switches an operation mode of a target device between a plurality of modes including a normal mode and a power saving mode ,
A power consumption information management unit for managing information related to the operation mode switching process;
When a request to switch from the current mode to another mode is generated among the plurality of modes, the time until the other mode is canceled or the current mode is returned in response to the switch request. A time prediction unit for predicting the time until
Based on the management information that is the information managed by the power consumption information management unit and the predicted time that is the time predicted by the time prediction unit, a period during which the other mode continues is calculated, and the calculated value is A mode switching determination unit for determining whether to switch the operation mode from the current mode to the other mode;
A mode switching execution unit that switches the operation mode of the target device according to the determination of the mode switching determination unit;
The management information is a processing time required for a transition process from the current mode to the other mode and a processing time required for a return process from the different mode to the current mode. A power-saving processing device that includes information that can derive a period during which each of the other modes continues according to the predicted time for.

  The plurality of modes include the normal mode and two or more power saving modes,
  The time prediction unit, when a request for switching from a current mode of the plurality of modes to a mode of a specific range including two or more other modes is generated, in response to the switching request, the specific range Predicting the time until each mode is canceled or returning to the current mode for each mode within the specific range,
  The mode switching determination unit is based on management information that is the information managed by the power consumption information management unit and a predicted time that is the time for each mode predicted by the time prediction unit. The power saving processing apparatus according to claim 1, wherein a period during which each mode continues is calculated, and a switching destination of the current mode is determined from among the modes within the specific range using the calculated value.

The mode switching determination unit is based on management information that is the information managed by the power consumption information management unit and a predicted time that is the time for each mode predicted by the time prediction unit. A period for which each mode continues is calculated, and using the calculated value, it is determined whether to switch the operation mode from the current mode to any mode within the specific range or not Item 3. The power saving processing device according to Item 2.

The mode switching determination unit includes a power consumption required for the transition process to the different mode, a power consumption required for a period in which the different mode continues, and a power consumption required for the return process to the current mode. To calculate the total power consumption as the sum of, and using the calculated value to determine the switching destination of the operation mode,
The management information includes the power consumption of the target device in each of the different modes, the power consumption of the target device required for the transition process from the current mode to each of the different modes, and the current mode from the current mode. The power consumption of the target device required for the transition process to each other mode, the processing time required for the transition process from the current mode to the other mode, and the transition from the other mode to the current mode Power consumption of the target device required for return processing, power consumption of the target device required for return processing from each other mode to the current mode, and return from each other mode to the current mode Of the processing time required for processing, based on the predicted time for each mode, the mode switching determination unit includes information that can derive the total power consumption to be evaluated. Saving processing apparatus to claim 1, wherein.

The mode switching determination unit includes a power consumption required for the transition process to the different mode, a power consumption required for a period in which the different mode continues, and a power consumption required for the return process to the current mode. The total power consumption is calculated as the sum of the above, and the operation mode is switched from the current mode to the other mode by comparing the calculated value with the power consumption of the current mode in the same period. Whether or not
The management information includes the power consumption of the target device in the current mode, the power consumption of the target device in each of the other modes, and the target required for the transition process from the current mode to each of the other modes. Power consumption of the device, power consumption of the target device required for the transition processing from the current mode to each other mode, and processing time required for the transition processing from the current mode to each other mode, , Power consumption of the target device required for return processing from each other mode to the current mode, and power consumption of the target device required for return processing from each other mode to the current mode, Based on the predicted time for each mode out of the processing time required for return processing from each of the other modes to the current mode, the mode switching determination unit performs comparison. A power saving apparatus of claim 1 wherein that contains information capable of deriving the total power consumption.

  A timer event management unit for managing timer events;
  The time prediction unit
  By searching for the timer event managed by the timer event management unit, the time until the transition destination mode is canceled is predicted based on the time when the timer event is executed. The power saving processing apparatus according to claim 1, further comprising a timer event prediction unit.

  The timer event management unit also manages, for each timer event, device usage information indicating use or non-use of a component of the target device associated with execution of the timer event.
  The management information managed by the power consumption information management unit includes device selection information indicating what is used or not used among the constituent parts of the target device in each power saving mode,
  The timer event prediction unit refers to the device usage information and the device selection information, and is not used in the transition destination mode to be predicted among the timer events managed by the timer event management unit. The power saving processing device according to claim 6, wherein a time until the transition destination mode is canceled is predicted based on an execution time of a timer event in which a component of the target device used first is used.

The time prediction unit, based on the time interval of each of one or more types of repetitive interrupts that occurred in the past, the time until the transition-destination mode that is the target of the prediction is canceled or the current The power saving processing apparatus according to claim 7, further comprising an iterative interrupt prediction unit that predicts a time until returning to the mode.

The repetitive interrupt prediction unit includes a measurement unit that calculates an average value of each time interval of the one or more types of repetitive interrupts that have occurred in the past, and the prediction based on each of the average values The power saving processing device according to claim 8, wherein the time until the transition destination mode is canceled or the time until the current mode is restored is predicted.

The repetitive interrupt prediction unit includes a measurement unit that calculates a latest time interval that is a latest time interval of each of the one or more types of repetitive interrupts that have occurred in the past, and each of the latest time intervals includes 9. The power saving processing apparatus according to claim 8, wherein a time required until the transition destination mode is canceled or a time required for returning to the current mode is predicted based on the prediction target.

  The time prediction unit manages device usage information indicating use or non-use of a component of the target device associated with execution of each of the one or more repetitive interrupts that occurred in the past;
  The management information managed by the power consumption information management unit includes device selection information indicating what is used or not used among the constituent parts of the target device in each power saving mode,
  The iterative interrupt prediction unit refers to the device usage information and the device selection information, and is a transition destination mode to be predicted among the one or more types of repetitive interrupts generated in the past. Based on the repetitive interrupt time interval in which the component part of the target device that is not used is used, the time until the transition destination mode is canceled or the time until the current mode is restored is predicted. The power saving processing apparatus according to claim 8.

  An integrated circuit that switches an operation mode of a target device between a plurality of modes including a normal mode and a power saving mode,
  A power consumption information management circuit for managing information related to the operation mode switching process;
  When a request for switching from the current mode to another mode is generated among the plurality of modes, the time until the other mode is canceled or the current mode is restored when the switching request is satisfied. A time prediction circuit for predicting the time until
  Based on the management information that is the information managed by the power consumption information management circuit and the predicted time that is the time predicted by the time prediction circuit, the period during which the other mode continues is calculated, and the calculated value is A mode switching determination circuit for determining whether to switch the operation mode from the current mode to the other mode;
  A mode switching execution circuit for switching the operation mode of the target device according to the determination of the mode switching determination circuit,
  The management information is a processing time required for a transition process from the current mode to the other mode and a processing time required for a return process from the different mode to the current mode. An integrated circuit containing information from which the duration of each of the different modes can be derived according to the predicted time for.

  A power saving processing method for switching an operation mode of a target device between a plurality of modes including a normal mode and a power saving mode,
  A power consumption information management step for managing information related to the operation mode switching process;
  When a request for switching from the current mode to another mode is generated among the plurality of modes, the time until the other mode is canceled or the current mode is restored when the switching request is satisfied. A time prediction process for predicting the time until
  Whether the operation mode is switched from the current mode to the other mode based on the management information that is the information managed by the power consumption information management step and the predicted time that is the time predicted by the time prediction step. A mode switching determination step for determining whether or not,
  A power saving mode execution step of switching the operation mode of the target device according to the determination of the mode switching determination step,
  The management information is a processing time required for a transition process from the current mode to the other mode and a processing time required for a return process from the different mode to the current mode. A power saving processing method including information capable of deriving a period in which each of the different modes continues according to the predicted time for.

  A power saving processing program that causes a computer to function as a power saving processing device that switches an operation mode of a target device between a plurality of modes including a normal mode and a power saving mode,
  Power consumption information management means for managing information related to the operation mode switching process;
  When a request for switching from the current mode to another mode is generated among the plurality of modes, the time until the other mode is canceled or the current mode is restored when the switching request is satisfied. Time prediction means for predicting the time until
  Whether the operation mode is switched from the current mode to the other mode based on the management information that is the information managed by the power consumption information management unit and the predicted time that is the time predicted by the time prediction unit Mode switching determination means for determining whether or not,
  According to the determination of the mode switching determination means, the computer is caused to function as a power saving mode execution means for switching the operation mode of the target device,
  The management information is a processing time required for a transition process from the current mode to the other mode and a processing time required for a return process from the different mode to the current mode. A power-saving processing program including information that can derive a period during which each of the other modes continues according to the predicted time for.