KR20140073946A - Method for power saving of display device and apparatus using the same - Google Patents

Method for power saving of display device and apparatus using the same Download PDF

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Publication number
KR20140073946A
KR20140073946A KR1020120142001A KR20120142001A KR20140073946A KR 20140073946 A KR20140073946 A KR 20140073946A KR 1020120142001 A KR1020120142001 A KR 1020120142001A KR 20120142001 A KR20120142001 A KR 20120142001A KR 20140073946 A KR20140073946 A KR 20140073946A
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KR
South Korea
Prior art keywords
power saving
display device
saving mode
display
battery
Prior art date
Application number
KR1020120142001A
Other languages
Korean (ko)
Inventor
이은령
권기구
이수인
Original Assignee
한국전자통신연구원
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Application filed by 한국전자통신연구원 filed Critical 한국전자통신연구원
Priority to KR1020120142001A priority Critical patent/KR20140073946A/en
Publication of KR20140073946A publication Critical patent/KR20140073946A/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
    • G06F1/3212—Monitoring battery levels, e.g. power saving mode being initiated when battery voltage goes below a certain level
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/325—Power saving in peripheral device
    • G06F1/3265—Power saving in display device

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Telephone Function (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

A power saving method of a display apparatus and an apparatus using the same are disclosed. The power saving method of a display device according to the present invention includes: setting power saving modes by a user; Entering one of the power saving modes according to the battery charging state when it is determined that the battery charging state is not sufficient; And controlling the display device in a manner corresponding to the power saving mode when the power saving mode enters one of the power saving modes. At this time, any one of the power saving modes may be to reduce the viewport of the display device.

Description

TECHNICAL FIELD [0001] The present invention relates to a power saving method of a display device,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a technique for minimizing power usage by switching to a power saving mode according to a battery charging state in an LCD-based display device used in a mobile phone, a portable device,

In the case of smart devices such as mobile phones, although the battery performance is improving, the size of the display is getting bigger, and many applications are running, and the battery usable time is shortening. Particularly, since a significant portion of the battery consumption is due to the display device, the power saving of the display device greatly affects the power saving of the entire system.

In the case of automobiles, the main energy source is changing from oil to electricity, and dashboards and LCDs are increasingly being used as displays. In such vehicles, how to efficiently use electricity stored in the vehicle's battery is becoming an important factor. In a case where the charge is sufficient, it is not a serious problem. However, in a case where cooling or heating is necessary or when the battery is not sufficiently charged, the display which is not directly related to the vehicle operation is operated in the power saving mode, It is necessary to control the battery efficiently.

Korean Patent Laid-Open Publication No. 2010-0004675 discloses a power management technique for a portable electronic device that adjusts brightness of a display screen of a portable electronic device or exits a power source according to a schedule input by a user. However, Korean Patent Laid-Open Publication No. 2010-0004675 does not operate regardless of the state of charge of the battery, and power control is limited to the brightness level of the display screen or the power shutdown level.

Accordingly, there is an urgent need for a power saving technique for a new display device which can reduce the battery power more efficiently in consideration of the state of charge of the battery.

SUMMARY OF THE INVENTION An object of the present invention is to reduce the consumption of battery by operating the display control method in the power saving mode when the battery charging state is below a predetermined level, and to increase the operating time and the operating time and distance of the electric device.

According to another aspect of the present invention, there is provided a method of operating a display device, the method comprising: setting power saving modes by a user; Entering one of the power saving modes according to the battery charging state when it is determined that the battery charging state is not sufficient; And controlling the display device in a manner corresponding to the power saving mode when the power saving mode enters one of the power saving modes.

At this time, any one of the power saving modes may be to reduce the viewport of the display device.

According to the present invention, the user can utilize the power saving mode effectively by defining the power saving mode and defining the operating environment according to each power saving mode situation.

In addition, the present invention can effectively increase the battery usage time by limiting the display function or the function of the device such as reducing the viewport of the display device according to the power saving mode setting.

1 is a block diagram showing a power saving device of a display device according to an embodiment of the present invention.
2 is a view showing an example of a display device screen to which the power saving method of the display device of the present invention is applied.
3 is a view showing another example of a display device to which the power saving method of the display device of the present invention is applied.
4 is a flowchart illustrating a power saving method of a display apparatus according to an exemplary embodiment of the present invention.

The present invention will now be described in detail with reference to the accompanying drawings. Hereinafter, a repeated description, a known function that may obscure the gist of the present invention, and a detailed description of the configuration will be omitted. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. Accordingly, the shapes and sizes of the elements in the drawings and the like can be exaggerated for clarity.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a power saving device of a display device according to an embodiment of the present invention.

Referring to FIG. 1, a power saving device of a display device according to an exemplary embodiment of the present invention includes a battery charge status check unit 110, a display control module 120, and a display device 130.

The battery charge state check unit 110 checks the charge state of the battery to determine whether the battery charge state has fallen to a level required for power save control.

The display control module 120 performs power saving control of the display device 130 to one of a plurality of preset power saving modes when the battery charge state check unit 110 determines that the charged state of the battery is not sufficient.

The display device 130 is controlled under the control of the display control module 120 to perform a display function.

In the display control operation performed by the display control module 120, the operation mode may be classified into a general mode and a power saving mode. At this time, the power saving mode may mean that the battery is not sufficiently charged. At this time, the power saving mode distinguishes the classes according to the battery charging state, and the user can designate the corresponding power saving mode for each class.

The power saving mode may be a plurality of types according to the class, and when the battery is left to a predetermined level, it may follow a general power saving control method of adjusting the brightness of the display device 130 or the like, It is difficult to provide a sufficient power saving mode. Therefore, it is possible to provide a single-axis display in which the viewport itself of the display device 130 is reduced to provide a shortening function.

For example, in the case of a portable terminal, a four-step power saving mode may be designated in the following manner.

Step 1 Power saving mode: 70% charge status, refresh cycle, brightness control

Step 2 Power Saving Mode: 50% charge status, application limit (network connection, data synchronization, etc.)

Step 3 Power Saving Mode: Charge 30% status, display viewport reduction, reduced call / message screen function

Step 4 Power Saving Mode: Charge 10% status, display viewport secondary reduction, reduced call / message screen function

For example, in the case of an electric car dashboard, a four-step power saving mode may be designated in the following manner.

Step 1 Power saving mode: 60% charge status, refresh cycle adjustment, brightness control

Step 2 Power Saving Mode: Charging 40% status, application limitation (network function, data synchronization function, multimedia function limitation)

Step 3 Power saving mode: 30% charge status, limited temperature control function

Step 4 Power Saving Mode: Charge 20% status, display viewport shrink, reduced default dashboard function

In this case, the display viewport refers to a rectangular area that actually displays a projection-converted graphic in a rendering process of generating an image in computer graphics (CG), which may mean an area on a display device where an actual screen is displayed have.

2 is a view showing an example of a display device screen to which the power saving method of the display device of the present invention is applied.

Referring to FIG. 2, in the normal mode, a screen is displayed on the entire display of the portable terminal. However, when the battery charging state is weakened and enters the power saving mode, the viewport of the display is reduced to cause the inactive area 210 to be displayed on the display, and the screen is displayed only in the active area 220 of the display.

3 is a view showing another example of a display device to which the power saving method of the display device of the present invention is applied.

Referring to FIG. 3, in the normal mode, a screen is displayed on the entire display of the dashboard of the vehicle. However, when the battery charging state is weakened and enters the power saving mode, the viewport of the display is reduced to cause the inactive area 310 to be displayed on the display, and the screen is displayed only in the active area 320 of the display.

4 is a flowchart illustrating a power saving method of a display apparatus according to an exemplary embodiment of the present invention.

Referring to FIG. 4, in a power saving method of a display device according to an embodiment of the present invention, a power saving mode is set by a user (S410).

At this time, a plurality of power saving modes may be provided depending on the state of charge of the battery. For example, four power saving modes 1 through 4 may be provided depending on the state of the battery.

At this time, step S410 may be a step performed by the display control module shown in Fig.

In addition, the power saving method of the display device according to an embodiment of the present invention determines whether the state of charge of the battery is a state (S420).

If it is determined in step S420 that the charged state of the battery is a normal mode sufficient for the power saving mode to be unnecessary, the method for saving power of the display device according to an exemplary embodiment of the present invention performs normal mode operation control, (S431).

The method of power saving the display device according to an embodiment of the present invention determines whether the normal mode operation is terminated (S441). If the operation is not terminated, the process returns to step S420 to check the battery charging state. .

As a result of the determination in step S420, if the battery is in the first power saving mode, which is a step of performing the first power saving operation although the power saving mode is required, the power saving method of the display device according to the embodiment of the present invention The first step power saving mode operation control is performed to control the display device (S432).

The method of power saving the display device according to an embodiment of the present invention determines whether the first power saving mode operation has been terminated (S442), and if not, returns to step S420 to check the battery charging status. Thereby ending the control operation.

If it is determined in step S420 that the battery charging state is a power saving mode, but the power saving mode is a two-step power saving mode, which is a step of performing a power saving operation in step 2, the power saving method of the display apparatus according to an exemplary embodiment of the present invention The second power saving mode operation is performed to control the display device (S433).

The method of power saving the display device according to an embodiment of the present invention determines whether the two-step power save mode operation is terminated (S443), and returns to step S420 to check the battery charge state. Thereby ending the control operation.

If it is determined in step S420 that the battery charging state is a three-step power saving mode in which the power saving mode is required but the third power saving operation is performed, the power saving method of the display apparatus according to an exemplary embodiment of the present invention The power saving mode operation control is performed to control the display device (S434).

The method of power saving the display device according to an embodiment of the present invention determines whether the operation of the power saving mode of the third step is terminated (S444). If the operation of the power saving mode of the display device is not terminated, the process returns to step S420 to check the battery charging state. Thereby ending the control operation.

As a result of the determination in step S420, when the battery is in the power saving mode, the power saving mode of the display device according to an exemplary embodiment of the present invention is a four-step power saving mode, The power saving mode operation control is performed to control the display device (S435).

The method of power saving the display device according to an embodiment of the present invention determines whether the power save mode operation of the fourth step is completed (S445). If the power save operation is not terminated, the process returns to step S420 to check the battery charge state. Thereby ending the control operation.

For example, in the case of a portable terminal, the first power saving mode may be a mode for performing the refresh cycle adjustment and the brightness adjustment, and the second power saving mode may be a mode for performing application restriction (restriction of network connection and data synchronization) And the 3-step power saving mode may be a mode for reducing the display viewport and providing a reduced telephone / message screen function, and the 4-step power saving mode may be for reducing the display viewport secondary and providing a reduced telephone / Mode.

For example, in the case of an electric car dashboard, the first power saving mode may be a mode for performing refresh cycle adjustment and brightness adjustment, and the second power saving mode may be a mode for performing application restriction (network function, data synchronization function, Mode, the three-level power saving mode may be a mode for restricting the temperature control function, and the four-level power saving mode may be a step for performing the display viewport reduced and reduced basic dashboard function.

As described above, the power saving method and apparatus of the display device according to the present invention are not limited to the configuration and method of the embodiments described above, but the embodiments can be applied to various embodiments All or a part of the above-described elements may be selectively combined.

110: Battery charge status check unit
120: Display control module
130: Display device

Claims (1)

Setting power saving modes by a user;
Entering one of the power saving modes according to the battery charging state when it is determined that the battery charging state is not sufficient; And
Controlling the display device in a manner corresponding to the power saving mode when entering one of the power saving modes
Lt; / RTI >
Wherein one of the power saving modes reduces the viewport of the display device.
KR1020120142001A 2012-12-07 2012-12-07 Method for power saving of display device and apparatus using the same KR20140073946A (en)

Priority Applications (1)

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KR1020120142001A KR20140073946A (en) 2012-12-07 2012-12-07 Method for power saving of display device and apparatus using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120142001A KR20140073946A (en) 2012-12-07 2012-12-07 Method for power saving of display device and apparatus using the same

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KR20140073946A true KR20140073946A (en) 2014-06-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018044065A1 (en) * 2016-08-30 2018-03-08 Samsung Electronics Co., Ltd. Method for displaying time information in low power state and electronic device including the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018044065A1 (en) * 2016-08-30 2018-03-08 Samsung Electronics Co., Ltd. Method for displaying time information in low power state and electronic device including the same
US11016853B2 (en) 2016-08-30 2021-05-25 Samsung Electronics Co., Ltd. Method for displaying time information in low power state and electronic device including the same

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