CN103853306A - Power saving system and method for display card - Google Patents
Power saving system and method for display card Download PDFInfo
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- CN103853306A CN103853306A CN201210512195.9A CN201210512195A CN103853306A CN 103853306 A CN103853306 A CN 103853306A CN 201210512195 A CN201210512195 A CN 201210512195A CN 103853306 A CN103853306 A CN 103853306A
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- interface
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- display
- signal
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Abstract
The invention discloses a power saving method for a display card. The method comprises the following steps of reading a signal at each interface; judging whether the interface is connected with a display according to the read signal; when the interface is connected with the display, switching off a power switch, connected with the interface, of a graphic output unit; reading a signal at an interface corresponding to the graphic output unit which is disconnected from a power supply by using a read module; judging whether the interface corresponding to the graphic output unit which is disconnected from the power supply is connected with the display; when the interface corresponding to the graphic output unit which is disconnected from the power supply is connected with the display, switching on the power switch, connected with the interface, of the graphic output unit again. The invention also provides a power saving system for a display card. By the method and the system, the graphic output unit in the display card can be monitored and is dynamically switched off or switched on, so that electric power is saved and the power consumption of the display card is reduced.
Description
Technical field
The present invention relates to a kind of video card electricity-saving system and method.
Background technology
Conventionally, the energy saving technology that video card uses is just done energy saving, for example in clock frequency, reduce core clock and internal memory clock frequency, thereby reduce power consumption, to reach the object of power saving, but, reduce the performance that also can reduce video card when clock frequency, affect user's experience.
Generally speaking, in video card, there are multiple figure output units (as, digital to analog converter).User is in the time using video card, and the inner all figure output units of video card all switch on power.But, user to the actual use procedure of video card in, not all figure output unit all can use, for example, suppose that video card has six figure output units, user may only can use one of them figure output unit, and other five figure output units are also expending electric power, thus, cause the waste of electric power.
Summary of the invention
In view of above content, be necessary to provide a kind of video card electricity-saving system, it can monitor the figure output unit in video card, closes dynamically or starts the figure output unit in video card, to save electric power, reduces video card power consumption.
In view of above content, be also necessary to provide a kind of video card electricity saving method, can monitor the figure output unit in video card, close dynamically or start the figure output unit in video card, to save electric power, reduce video card power consumption.
A kind of video card electricity-saving system, described video card comprises figure output unit and interface, and wherein, each figure output unit is connected with an interface, and this system comprises: read module, for reading the signal on each interface; Judge module, for judging according to read signal whether interface is connected with display; Control module, in the time that interface is not connected with display, closes the power switch of the figure output unit being connected with this interface; Described read module, also for reading the signal on the corresponding interface of figure output unit that is cut off power supply; Described judge module, whether the corresponding interface of figure output unit that is also cut off power supply for judging is connected with display; Described control module, also, in the time being cut off the corresponding interface of figure output unit of power supply and being connected with display, reopens the power switch of the figure output unit being connected with this interface.
A kind of video card electricity saving method, described video card comprises figure output unit and interface, and wherein, each figure output unit is connected with an interface, and the method comprises: read the signal on each interface; Judge according to read signal whether interface is connected with display; In the time that interface is not connected with display, close the power switch of the figure output unit being connected with this interface; Read the signal on the corresponding interface of figure output unit that is cut off power supply; Whether the corresponding interface of figure output unit that judgement is cut off power supply is connected with display; In the time being cut off the corresponding interface of figure output unit of power supply and being connected with display, reopen the power switch of the figure output unit being connected with this interface.
Compared to prior art, utilize described video card electricity-saving system and method, it can monitor the figure output unit in video card, closes dynamically or starts the figure output unit in video card, to save electric power, reduces video card power consumption.
Accompanying drawing explanation
Fig. 1 is the applied environment figure of video card electricity-saving system of the present invention preferred embodiment.
Fig. 2 is the functional block diagram of video card electricity-saving system preferred embodiment in Fig. 1 of the present invention.
Fig. 3 is the process flow diagram of video card electricity saving method of the present invention preferred embodiment.
Main element symbol description
| Computing machine | 1 |
| |
10 |
| |
100 |
| Video card electricity-saving |
12 |
| Read module | 120 |
| Judge module | 122 |
| Control module | 124 |
| |
110 |
| |
2 |
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
As shown in Figure 1, be the applied environment figure of video card electricity-saving system of the present invention preferred embodiment.Wherein, this video card electricity-saving system 12 operates on computing machine 1, and this computing machine 1 comprises video card 10.That this video card 10 comprises is one or more (in Fig. 1 take three as example explanation) figure output unit 100 and one or more interface 110, wherein, each figure output unit 100 is connected with an interface 110.This computing machine 1 is connected with display 2 by interface 110, it should be noted that, each interface 110 can only connect a display 2.
Described figure output unit 100, for sending video card 10 decodings image out to display 2 by interface 110, shows image thereby realize on display 2.
Described figure output unit 100 may be, but not limited to,, digital to analog converter (digital-to-analog converter, DAC) or binary simulation converter (binary-to-analog converter, BAC).
Described interface 110 can be, but be not limited to, Video Graphics Array (Video GraphicsArray, VGA) interface, aberration interface, digital visual interface (digital video interface, DVI), display interface (display port, and any interface that figure output can be provided such as HDMI (High Definition Multimedia Interface) (High-Definition Multimedia Interface, HDMI) interface, thunder and lightning (Thunderbolt) interface DP).
In addition, each figure output unit 100 is connected with an independent current source switch, by closing or open this independent current source switch, can close or open this figure output unit 100.
Signal on described video card electricity-saving system 12 fetch interfaces 110, and control according to signal the independent current source switch that each figure output unit 100 connects, thus can close or open this figure output unit 100.The function of described video card electricity-saving system 12 will be described in detail in Fig. 2 and Fig. 3.
As shown in Figure 2, be the functional block diagram of video card electricity-saving system 12 preferred embodiments in Fig. 1 of the present invention.This video card electricity-saving system 12 comprises read module 120, judge module 122 and control module 124.The alleged module of the present invention has been the computer program code segments of a specific function, be more suitable in describing the implementation of software in computing machine than program, therefore below the present invention to all describing with module in software description.
Described read module 120 is for reading the signal on each interface 110.Particularly, on each interface 110, there is a universal input follower (General Purpose InputOutput, GPIO), it is upper that the signal on interface 110 is stored in this GIPO conventionally, and the signal that read module 120 reads from GPIO is the signal on interface 110.
Described judge module 122 is for judging according to read signal whether interface 110 is connected with display 2.Particularly, if described in the signal that reads be high-frequency signal, show that interface 110 is connected with display 2, if described in the signal that reads be low frequency signal, show that interface 110 is not connected with display 2.
Described control module 124, in the time that interface 110 is not connected with display 2, is closed the power switch of the figure output unit 100 being connected with this interface 110.Particularly, suppose that video card 10 has three interfaces 110, be respectively interface A, interface B and interface C, if drawing with display 2, the judgement of interface A process signal is connected, close the power switch of the figure output unit 100 being connected with this interface A, the power supply of the figure output unit 100 being connected with this interface A is cut off.
Described read module 120 is also for reading the signal on the corresponding interface 110 of figure output unit 100 that is cut off power supply.For example, the signal on read module 120 fetch interface A.Conventionally, because the power supply of the corresponding figure output unit 100 of interface A is cut off, if read module 120 now can read the high-frequency signal on the GPIO of interface A, show that the high-frequency signal of interface A comes from display 2, display 2 is connected with interface A.
Whether described judge module 122 is also the cut off power supply corresponding interface 110 of figure output unit 100 for judging is connected with display 2.
Described control module 124, in the time being cut off the corresponding interface 110 of figure output unit 100 of power supply and being connected with display 2, reopens the power switch of the figure output unit 100 being connected with this interface 110.For example, reopen the power switch of figure output unit 100 that interface A connects, to connect the power supply of the figure output unit 100 that this interface A connects.
As shown in Figure 3, be the process flow diagram of video card electricity saving method of the present invention preferred embodiment.
Step S10, read module 120 reads the signal on each interface 110.Particularly, on each interface 110, there is a universal input follower (General Purpose InputOutput, GPIO), it is upper that the signal on interface 110 is stored in GIPO conventionally, and the signal that read module 120 reads from GPIO is the signal on interface 110.
Step S20, judge module 122 judges according to read signal whether interface 110 is connected with display 2.Particularly, if described in the signal that reads be high-frequency signal, show that interface 110 is connected with display 2, directly process ends, otherwise, if described in the signal that reads be low frequency signal, show that interface 110 is not connected with display 2, flow process enters step S30.
Step S30, in the time that interface 110 is not connected with display 2, control module 124 is closed the power switch of the figure output unit 100 being connected with this interface 110.Particularly, suppose that video card 10 has three interfaces 110, be respectively interface A, interface B and interface C, if drawing with display 2, the judgement of interface A process signal is connected, close the power switch of the figure output unit 100 being connected with this interface A, the power supply of the figure output unit 100 being connected with this interface A is cut off.
Step S40, read module 120 reads the signal on the corresponding interface 110 of figure output unit 100 that is cut off power supply.For example, the signal on read module 120 fetch interface A.Because the power supply of the corresponding figure output unit 100 of interface A is cut off, if read module 120 now can read the signal on the GPIO of interface A, show that the signal of interface A comes from display 2, display 2 is connected with interface A.
Step S50, whether the corresponding interface 110 of figure output unit 100 that judge module 122 judgements are cut off power supply is connected with display 2.If interface A is not connected with display 2, return to step S40, otherwise if interface A is connected with display 2, flow process enters step S60.
Step S60, in the time being cut off the corresponding interface 110 of figure output unit 100 of power supply and being connected with display 2, control module 124 reopens the power switch of the figure output unit 100 being connected with this interface 110.For example, reopen the power switch of figure output unit 100 that interface A connects, to connect the power supply of the figure output unit 100 that this interface A connects.
Above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to above preferred embodiment, those of ordinary skill in the art should be appreciated that and can modify or be equal to the spirit and scope that replacement should not depart from technical solution of the present invention technical scheme of the present invention.
Claims (10)
1. a video card electricity-saving system, described video card comprises figure output unit and interface, and wherein, each figure output unit is connected with an interface, it is characterized in that, and this system comprises:
Read module, for reading the signal on each interface;
Judge module, for judging according to read signal whether interface is connected with display;
Control module, in the time that interface is not connected with display, closes the power switch of the figure output unit being connected with this interface;
Described read module, also for reading the signal on the corresponding interface of figure output unit that is cut off power supply;
Described judge module, whether the corresponding interface of figure output unit that is also cut off power supply for judging is connected with display; And
Described control module, also, in the time being cut off the corresponding interface of figure output unit of power supply and being connected with display, reopens the power switch of the figure output unit being connected with this interface.
2. video card electricity-saving system as claimed in claim 1, is characterized in that, if described in the signal that reads be high-frequency signal, this interface is connected with display, otherwise if the signal reading is low frequency signal, this interface is not connected with display.
3. video card electricity-saving system as claimed in claim 1, is characterized in that, described in the signal that is cut off on the corresponding interface of figure output unit of power supply be high-frequency signal, the corresponding interface of figure output unit that is cut off power supply is connected with display.
4. video card electricity-saving system as claimed in claim 1, is characterized in that, described interface comprises Video Graphics Array interface, aberration interface, digital visual interface, display interface, HDMI (High Definition Multimedia Interface) and thunder and lightning interface.
5. video card electricity-saving system as claimed in claim 1, is characterized in that, described figure output unit is digital to analog converter or binary simulation converter.
6. a video card electricity saving method, described video card comprises figure output unit and interface, and wherein, each figure output unit is connected with an interface, it is characterized in that, and the method comprises:
Read the signal on each interface;
Judge according to read signal whether interface is connected with display;
In the time that interface is not connected with display, close the power switch of the figure output unit being connected with this interface;
Read the signal on the corresponding interface of figure output unit that is cut off power supply;
Whether the corresponding interface of figure output unit that judgement is cut off power supply is connected with display; And
In the time being cut off the corresponding interface of figure output unit of power supply and being connected with display, reopen the power switch of the figure output unit being connected with this interface.
7. video card electricity saving method as claimed in claim 6, is characterized in that, if described in the signal that reads be high-frequency signal, this interface is connected with display, otherwise if the signal reading is low frequency signal, this interface is not connected with display.
8. video card electricity saving method as claimed in claim 6, described in the signal that is cut off on the corresponding interface of figure output unit of power supply be high-frequency signal, the corresponding interface of figure output unit that is cut off power supply is connected with display.
9. video card electricity saving method as claimed in claim 6, is characterized in that, described interface comprises Video Graphics Array interface, aberration interface, digital visual interface, display interface, HDMI (High Definition Multimedia Interface) and thunder and lightning interface.
10. video card electricity saving method as claimed in claim 6, is characterized in that, described figure output unit is digital to analog converter or binary simulation converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210512195.9A CN103853306A (en) | 2012-12-04 | 2012-12-04 | Power saving system and method for display card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210512195.9A CN103853306A (en) | 2012-12-04 | 2012-12-04 | Power saving system and method for display card |
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| CN103853306A true CN103853306A (en) | 2014-06-11 |
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| CN201210512195.9A Pending CN103853306A (en) | 2012-12-04 | 2012-12-04 | Power saving system and method for display card |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112306213A (en) * | 2020-11-02 | 2021-02-02 | 上海闻泰电子科技有限公司 | Display card mode switching method and device based on terminal, storage medium and terminal |
| CN116107410A (en) * | 2023-04-06 | 2023-05-12 | 深圳中微电科技有限公司 | Power management method and system for display card in Linux system |
-
2012
- 2012-12-04 CN CN201210512195.9A patent/CN103853306A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112306213A (en) * | 2020-11-02 | 2021-02-02 | 上海闻泰电子科技有限公司 | Display card mode switching method and device based on terminal, storage medium and terminal |
| CN112306213B (en) * | 2020-11-02 | 2024-03-08 | 上海闻泰电子科技有限公司 | Display card mode switching method and device based on terminal, storage medium and terminal |
| CN116107410A (en) * | 2023-04-06 | 2023-05-12 | 深圳中微电科技有限公司 | Power management method and system for display card in Linux system |
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Application publication date: 20140611 |