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Electronic device, method for controlling electronic device, and recording medium

  • US 8,533,520 B2
  • Filed: 08/31/2009
  • Issued: 09/10/2013
  • Est. Priority Date: 09/09/2008
  • Status: Expired due to Fees
First Claim
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1. An electronic device comprising:

  • a control unit connected to a process executing unit executing a directed information process;

    a set time data storage unit recording data about a mode set time taken until a transition to a power saving mode consuming small power after the information process in the process executing unit is finished;

    a basic set time data storage unit recording data about a basic set time;

    an extension time data storage unit recording data about an extension time; and

    an operation unit;

    whereinthe control unit includes;

    a mode control unit which measures the time elapsed from an end of the information process and, when the elapsed time passes over the mode set time recorded in the set time data storage unit, causes the process executing unit to transition to the power saving mode;

    an extension processing unit which, when an extension direction of the mode set time is detected via the operation unit, calculates an extended mode set time by using the extension time recorded in the extension time data storage unit and records the calculated mode set time in the set time data storage unit; and

    a recovery processing unit which, when transition to the power saving mode is made in the case in which the extended mode set time is stored in the set time data storage unit, records the basic set time, which is recorded in the basic set time data storage unit, in the set time data storage unit, wherein;

    the operation unit includes an extension directing button;

    the extension time data storage unit stores data about a unit extension time of the case in which the extension directing button is pressed down one time;

    the extension processing unit detects an extension direction when the extension directing button is pressed down, detects the number of times of the press-down when the extension directing button is pressed down, calculates the extension time by multiplying the number of times of the press-down by the unit extension time stored in the extension time data storage unit, and calculates the extended mode set time by adding the extension time to the basic set time;

    the mode set time and the basic set time are calculated based on the elapsed time from the end of the information process measured by the control unit;

    the basic set time data storage unit stores a change timing time for shortening the basic set time and a change time at which the basic set time is set; and

    the extension processing unit calculates a new basic set time by subtracting a predetermined time from a current basic set time when the time elapsed from the change time passes over the change timing time, and stores the new basic set time calculated to the basic set time data storage unit as the change time.

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