CN103631357A - Power management system and power management method - Google Patents
Power management system and power management method Download PDFInfo
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- CN103631357A CN103631357A CN201210301890.0A CN201210301890A CN103631357A CN 103631357 A CN103631357 A CN 103631357A CN 201210301890 A CN201210301890 A CN 201210301890A CN 103631357 A CN103631357 A CN 103631357A
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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
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/3243—Power saving in microcontroller unit
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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
- G06F1/3215—Monitoring of peripheral devices
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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
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/325—Power saving in peripheral device
- G06F1/3253—Power saving in bus
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Abstract
The invention provides a power management system. The power management system comprises a display device, a graphics processor, a time schedule controller and a monitoring control unit, wherein the time schedule controller comprises a video frame buffer, and the monitoring control unit is used for monitoring a plurality of bus actions of a bus where the graphics processor is located, and filtering a plurality of graphics processing actions corresponding to the graphics processor according to the bus actions. The monitoring control unit is also used for estimating an idle time period of the graphics processor according to the graphics processing actions and controlling the graphics processor to write a plurality of images into the video frame buffer suddenly, and therefore the time schedule controller can be used for displaying the images, written in by the graphics processor, on the display device sufficiently within the idle time period to conduct automatic panel updating.
Description
Technical field
The invention relates to power management, particularly relevant for control panel, automatically upgrade power-supply management system and the method for (Panel self refresh).
Background technology
In traditional display technique, utilize processor support screen to present picture and often need to consume many electric power, because when conventional display device panel does not upgrade in display frame, still can for example, from system storage or graphic process unit (GPU) reading displayed picture, and send interruption (interrupt) signal to graphic process unit.Yet, along with scientific-technical progress, Intel is at embedded DisplayPort standard (embedded DisplayPort, eDP) developed the technology that panel upgrades (Panel Self Refresh) automatically in 1.3 editions, meaning browsing web sites or during reading electronic book as user, because image content static state normally.Therefore, display device panel is not when picture upgrades, only can adopt data and volitional check screen updates rate (refresh rate) in the internal memory of display device panel, and the no longer display frame of reading system storer or graphic process unit, and look-at-me is reduced to (screen curtain turnover rate and determine) 30 times per second, uses reduction power consumption.
Fig. 1 is the concise and to the point functional block diagram that shows the conventional power source management system meet eDP 1.3 standards and can control panel automatically to upgrade.As shown in Figure 1, power-supply management system 10 comprises a graphic process unit 20 and a display device panel 30, and wherein display device panel 30 also comprises time schedule controller (T-CON) 40, a display device 50 and a backlight module 60.Processor 20 comprises a transmission end 21, in order to transmit display frame that graphic process unit 20 produces to time schedule controller 40.Graphic process unit 20 can be the graphic process unit (GPU) being positioned on an independent display card, or is arranged in a graphic process unit of the central processing unit (CPU) (for example Intel i5, i7 CPU) on a motherboard (Mainboard).Time schedule controller 40 at least comprises a receiving end 41, a Pixel arrangement unit 42, a display device interface (LCD interface) 43, one video frame buffer (Video frame buffer) 44 and one backlight control unit (Backlight control unit) 45.
In simple terms, the display frame that time schedule controller 40 receives from graphic process unit 20 by receiving end 41, then via Pixel arrangement unit 42, the pixel of received picture rearranged and be stored in video frame buffer 44 by rearranging pixel later.Display device interface 43 reads picture data by Pixel arrangement unit 42 in video frame buffer 44, and controls row driver 51 and line driver 52 in display device 50, uses the picture that demonstration is read.Backlight control unit 45 is in order to control the switch of backlight module 60.
Should be noted, in traditional time schedule controller 40, the size of video frame buffer 44 often all only has the size of a frame of video.The full resolution high image quality picture (Full HD) of take is example, and its size can be 1920*1080*3=6220800bytes (being about 6Mbytes).In time schedule controller 40, also optionally comprise an image coder and an image-decoding device (not illustrating), the display frame that wherein image coder receives receiving end 41 is encoded, then the display frame after coding is stored in video frame buffer 244 by Pixel arrangement unit 42.Detailed content can be with reference to " An LCD Driver with on-chip frame buffer and 3 times image compression " SPIE-IS & T 2008, Vol.6807,68070H-1.
At time schedule controller 40, carry out panel while automatically upgrading (for example, in still frame time), can directly in video frame buffer 44, take out stored picture data and directly in display device 50, play, now graphic process unit 20 can, in low power consumpting state, be used saving electric power.In addition, when graphic process unit 20 has detected new image data (for example, from knocking keyboard or rolling mouse), graphic process unit 20 can be aroused transmission end 21, and transmits a new image data to the video frame buffer 44 in time schedule controller 40.
In traditional power-supply management system 10, because of graphic process unit 20, often receive from the look-at-me of time schedule controller 40 or receive the look-at-me of external device (ED), graphic process unit 20 must often be waken up and in running order (for example S0 state of ACPI standard).In other words, graphic process unit 20 is often under the duty in high power consumption, and cannot effectively reduce the power consumption of power-supply management system 10.Therefore, need a kind of power-supply management system badly and more effectively reduce power consumption, use the service time that reaches longer.
Summary of the invention
The invention provides a kind of power-supply management system.This system comprises: a display device; One graphic process unit; Time schedule controller, comprises a video frame buffer; An and Monitoring and Controlling unit, in order to monitor a plurality of bus activities of graphic process unit place one bus, and filter and the corresponding a plurality of graphics processing activity of graphic process unit in bus activity, wherein Monitoring and Controlling unit also the graphics processing activity such as foundation estimate cycle standby time of this graphic process unit, and control this graphic process unit within this cycle standby time in a low power consumpting state; Wherein Monitoring and Controlling unit is also controlled graphic process unit burst and is write multiple images to video frame buffer, uses the image that allows time schedule controller be enough to write in display device broadcasting graphic process unit and automatically upgrade to carry out panel within cycle standby time.
The present invention also provides a kind of power-supply management system.This system comprises: a display device; One graphic process unit, comprises a Monitoring and Controlling unit, in order to monitor a plurality of bus activities of a bus at this graphic process unit place, and filters and the corresponding a plurality of graphics processing activity of this graphic process unit in these bus activities; And time schedule controller; Wherein cycle standby time of this graphic process unit is also estimated in this Monitoring and Controlling unit according to these graphics processing activity, and control this graphic process unit within this cycle standby time in a low power consumpting state, wherein this Monitoring and Controlling unit is also controlled this graphic process unit burst and is write multiple images to this video frame buffer, uses and allows this time schedule controller be enough in this display device, play these images that this graphic process unit writes within this standby time.
The present invention also provides a kind of method for managing power supply, and for a power-supply management system, this power-supply management system comprises a graphic process unit, a Monitoring and Controlling unit, time schedule controller and a display device.The method comprises: utilize this Monitoring and Controlling unit to monitor a plurality of bus activities of a bus at this graphic process unit place, and filter and the corresponding a plurality of graphics processing activity of this graphic process unit in these bus activities; Utilize this Monitoring and Controlling unit according to these graphics processing activity, to estimate cycle standby time of this graphic process unit, and control this graphic process unit within this cycle standby time in a low power consumpting state; Utilize the burst of this graphic process unit of this Monitoring and Controlling unit controls to write multiple images to a video frame buffer of this time schedule controller, use allowing this time schedule controller be enough within this cycle standby time to play in this display device these images that this graphic process unit writes automatically to upgrade to carry out panel.
Accompanying drawing explanation
Fig. 1 is the concise and to the point functional block diagram that shows the conventional power source management system meet eDP 1.3 standards and can control panel automatically to upgrade.
Fig. 2 A is the concise and to the point functional block diagram showing according to the power-supply management system 200 of one embodiment of the invention.
Fig. 2 B is the concise and to the point functional block diagram showing according to the power-supply management system 200 of another embodiment of the present invention.
Fig. 3 A shows according to installing the schematic diagram of the look-at-me of the bus that arrives graphic process unit place in one embodiment of the invention from each.
Fig. 3 B be presented in Fig. 3 A, rearrange and hive off after the schematic diagram of look-at-me.
Fig. 3 C is the schematic diagram showing according to the wake-up signal that in one embodiment of the invention, Monitoring and Controlling unit 222 sends.
Fig. 4 is that demonstration is according to the constitutional diagram of the state machine of the Monitoring and Controlling unit 222 of one embodiment of the invention.
Fig. 5 is the process flow diagram showing according to the method for managing power supply of one embodiment of the invention.
[main element label declaration]
10,200～power-supply management system; 20,220～processor;
21,221～transmission end; 30,230～display device panel;
40,240～time schedule controller; 41,241～receiving end;
42,242～Pixel arrangement unit; 43,243～display device interface;
44,244～video frame buffer; 45,245～backlight control unit;
50,250～display device; 51,251～row driver;
52,252～line driver; 60,260～backlight module;
222～Monitoring and Controlling unit;
310,311,312,313,320,330,340～look-at-me;
350,360～pulse signal; 410-450～state.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and coordinate appended graphicly, be described in detail below.
Fig. 2 A is the concise and to the point functional block diagram showing according to the power-supply management system 200 of one embodiment of the invention.As shown in Figure 2 A, power-supply management system 200 comprises a graphic process unit 220 and a display device panel 230, and wherein display device panel 230 also comprises time schedule controller (T-CON) 240, a display device 250 and a backlight module 260.Graphic process unit 220 comprises a transmission end 221, in order to transmit display frame that graphic process unit 220 produces to time schedule controller 240.In one embodiment, graphic process unit 220 can be the graphic process unit (GPU) being positioned on an independent display card.In another embodiment, graphic process unit 220 can be a graphic process unit of the central processing unit (CPU) (for example Intel i5, i7 CPU) being arranged on a motherboard (Mainboard).Time schedule controller 240 at least comprises a receiving end 241, a Pixel arrangement unit 242, a display device interface (LCD display interface) 243, one video frame buffer (Video frame buffer) 244 and one backlight control unit (Backlight control unit) 245.
In simple terms, multiple images that time schedule controller 240 receives from graphic process unit 220 by receiving end 241, then via Pixel arrangement unit 242, the pixel of multiple received images is rearranged and the pixel that rearranges multiple images is later stored in to video frame buffer 244.Display device interface 243 sequentially reads the pixel data of these images in video frame buffer 244 by Pixel arrangement unit 242, and controls row driver 251 and line driver 252 in display device 250, uses multiple images that demonstration is read successively.Backlight control unit 245 is in order to control the switch of backlight module 260.Should be noted, video frame buffer 244 of the present invention is different from the video frame buffer 44 in conventional power source management system 10, video frame buffer 44 only can store an image, and video frame buffer 244 of the present invention can store multiple images (for example 10 or 30 images, its quantity capable of regulating).In other words, video frame buffer 244 of the present invention can once store 10 images, for the use of carrying out panel and automatically upgrading.
Fig. 2 B is the concise and to the point functional block diagram showing according to the power-supply management system 200 of another embodiment of the present invention.In one embodiment, power-supply management system 200 also comprises a Monitoring and Controlling unit 222, for example, in order to monitor the bus activity (bus activity) of the bus (system bus or PCI-E bus) at (monitor) graphic process unit 220 places.In one embodiment, Monitoring and Controlling unit 222 can be at a microcontroller of graphic process unit 220 outsides (Microcontroller unit), as shown in Figure 2 A.In another embodiment, Monitoring and Controlling unit 222 also can in be built in graphic process unit 220, as shown in Figure 2 B.In one embodiment, Monitoring and Controlling unit 222 can also be a software package of being supported by specific hardware, but the present invention is not limited to this.
Fig. 3 A shows according to installing the schematic diagram of the look-at-me of the bus that arrives graphic process unit place in one embodiment of the invention from each.Fig. 3 B be presented in Fig. 3 A, rearrange and hive off after the schematic diagram of look-at-me.Fig. 3 C is the schematic diagram showing according to the wake-up signal that in one embodiment of the invention, Monitoring and Controlling unit 222 sends.By Fig. 3 A, can be learnt, by the time interval between the look-at-me 310 and 320 of time schedule controller 240 graphic process unit that is issued to 220 be 1/30 second (Yi Jiqi chronomere is about a millisecond grade), and originally may be distributed between this interval of 1/30 second from the look-at-me 311～313 of other device.Look-at-me after Monitoring and Controlling unit 222 rearranges is as shown in Figure 3 B, wherein the time interval by time schedule controller 240 graphic process unit that is issued to 220 look-at- mes 330 and 340 is also 1/30 second, the look-at-me that should be noted same numeral in Fig. 3 B represents all from same device, and the look-at-me after rearranging is only the use of explanation, the bus activity irrelevant with graphic process unit can be filtered (for example look-at-me 311,312), and only retains the look-at-me (for example look-at-me 310,320,313) relevant with graphic process unit 220.As shown in Figure 3 C, Monitoring and Controlling unit 222 transmits a wake-up signal to graphic process unit 220, use and make graphic process unit 220 in running order when wake-up signal is high logic level (high logic level), wherein the voltage of graphic process unit 220 in working order time is for example 1W.When wake-up signal is low logic level (low logic level), allow graphic process unit 220 for example, in low power consumpting state (sleep state), wherein the voltage of graphic process unit 220 when low power consumpting state is for example 0.001w.More specifically, because install to the look-at-me of graphic process unit 220 and all can rearrange and hive off (grouping) by monitored control module 222 from each, and handle together after being dispensed to the look-at-me being next to from 240 timed sending of time schedule controller, this section have many look-at-mes during in (for example pulse signal 350 and 360), can allow graphic process unit 220 in running order, use and concentrate the operation of carrying out each device to control.During being low logic state at wake-up signal, 220 of graphic process unit enter low power consumpting state.When wake-up signal is during in high logic state, except allowing graphic process unit 220 enter duty, also can be used as a burst control signal (burst control signal) in order to promote the operating frequency (operating frequency) of graphic process unit 220.Further, if the predetermined registration operation frequency of graphic process unit 220 is 1GHz, when wake-up signal is during in high logic state, it is (non-limiting that Monitoring and Controlling unit 222 can be increased to 1.3GHz by the operating frequency of graphic process unit 220, capable of regulating), use burst (burst) graphic process unit 220 and at short notice multiple continuous images (for example 10 or 30 images) are write to video frame buffer 244.
PCI Express * 4 bus of take is example, its frequency range can reach 800MBytes/sec, the operating frequency of adding graphic process unit 220 is 1GHz, graphic process unit 220 is carried out burst and is write image to time of video frame buffer 244 and approximately only have tens of microseconds (μ s), and time schedule controller 240 is sent to the look-at-me of graphic process unit 220 and is about 33 milliseconds (1/30 seconds).With regard to time scale, graphic process unit 220 is carried out burst, and to write the shared time scale of the operation of image very little, so graphic process unit 220 can, in low power consumpting state, be used saving electric power in most of the time.
Hold continuous previous embodiment, can conclude main three functions that draw Monitoring and Controlling of the present invention unit 222: all activities of the bus (PCI-E bus) at (1) monitoring graphic process unit 220 places screening are about the activity of graphic process unit 220; (2) control graphic process unit 220 bursts and write multiple images to video frame buffer 244, use and carry out panel and automatically upgrade; (3) control graphic process unit 220 and enter low power consumpting state.
In one embodiment, Monitoring and Controlling unit 222 continues to monitor the activity of bus, and whether judgement is stored in video frame buffer 244 not enough for the automatic image quantity of upgrading of panel.In simple terms, carrying out the automatic principle of upgrading of panel is can not allow user experience picture produce delay.The demand of Microsoft's " forever open forever connect " (Always On Always Connected) standard of take is example, when graphic process unit 220 is in low power consumpting state, and the higher limit that graphic process unit 220 is got back to the wakeup time (wakeup time) of duty by low power consumpting state is 300 milliseconds.In fact the wakeup time of graphic process unit 220 may be faster, for example 100 milliseconds.
For instance, Monitoring and Controlling unit 222 is controlled graphic process unit 220 bursts and is write 30 images to video frame buffer 244, and display device 250 has the picture update rate of 60 images per second, 30 the complete pictures of real-time sequence controller 240 needs per second of anticipating, every complete picture can split into Shang Tuchang (top field) and figure below field (bottom field), more sequentially release of an interleave (de-interlacing) is carried out to allow display device 250 have the picture update rate of 60 pictures per second in the upper figure field of every complete picture and figure below field by time schedule controller 240.Therefore, display device need to spend 1 second to read 30 stored pictures, reads 33 milliseconds of every picture equispaceds.If the bus at graphic process unit 220 places does not still have activity after 20 images (or 660 milliseconds), because of 660 milliseconds of 300 milliseconds of situations that approached the automatic more kainogenesis demonstration of panel data deficiencies of wakeup time that add graphic process unit 220, now 222 of Monitoring and Controlling unit need to force to wake up graphic process unit 220 bursts and write display frame to video frame buffer 244, to avoid panel automatically to upgrade, have the situation that shows data deficiencies to occur.
In simple terms, Monitoring and Controlling unit 222 needs judgement ahead of time in the upper situation whether display frame deficiency can occur before once waking graphic process unit 220 completely up, if so, 222 of Monitoring and Controlling unit directly wake graphic process unit 220 bursts up and write display frame to video frame buffer 244.If not, 222 of Monitoring and Controlling unit wake up process device 222 is to carry out the instruction from application program or operating system.For the user, no matter in that a kind of situation, all feel that graphic process unit 220 is direct-opens.
Fig. 4 is that demonstration is according to the constitutional diagram of the state machine of the Monitoring and Controlling unit 222 of one embodiment of the invention.In state 410, the movable and screening of the bus (for example PCI-Express bus) at 222 monitoring graphic process unit 220 places, Monitoring and Controlling unit is about the activity of graphic process unit 220.If do not show relevant activity, get back to state 410, Monitoring and Controlling unit 222 continues to monitor the activity of the bus at graphic process unit 220 places.At state 420, following function can be carried out in Monitoring and Controlling unit 222: cycle standby time (the idling time period) Tidle that (a) estimates graphic process unit 220; (b) the demonstration data that 220 bursts of control graphic process unit write sufficient amount, to video frame buffer 244, are enough to carry out panel between estimated cycle standby time and automatically upgrade; (c) control graphic process unit 220 and enter low power state.
At state 430, Monitoring and Controlling unit 220 monitoring following situations: (d) demonstration data deficiencies event (run-out-of-display event) and (e) graphics processing activity (GPU activity), the graphics processing activity for example being started by application program or operating system.When any event not detected, get back to state 430, Monitoring and Controlling unit 222 continues to monitor the life event that shows data deficiencies event and graphic process unit 220.When detecting, event occurs, gets the hang of 440, and Monitoring and Controlling unit 222 is set as high logic state by wake-up signal, uses and allows graphic process unit 220 enter duty by low power consumpting state.If make graphic process unit 220 enter duty because (d) shows data deficiencies event, get back to state 420.If because the life event of (e) graphic process unit 220 makes graphic process unit 220 enter duty, get the hang of 450.At state 450, graphic process unit 220 can for example, within wakeup time (: 300 milliseconds) graphics processing activity that starts of beginning reason application program or operating system.
Fig. 5 is the process flow diagram showing according to the method for managing power supply of one embodiment of the invention.At step S500, a plurality of bus activities of a bus at 222 monitoring graphic process unit 220 places, Monitoring and Controlling unit, and filter and the corresponding a plurality of graphics processing activity of graphic process unit 220 in bus activity.At step S510, cycle standby time of graphic process unit 220 is estimated in Monitoring and Controlling unit 222 according to these graphics processing activity.At step S520, Monitoring and Controlling unit 222 is controlled this graphic process unit burst and is write multiple images to a video frame buffer of this time schedule controller, uses these images that allow this time schedule controller be enough to write in display device 250 broadcasting graphic process unit 220 and automatically upgrade to carry out panel within this cycle standby time.
Though the present invention discloses as above with preferred embodiment; so it is not in order to limit scope of the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; when doing a little change and retouching, so protection scope of the present invention is when being as the criterion depending on the appended claim scope person of defining.
Claims (10)
1. a power-supply management system, comprising:
One display device;
One graphic process unit;
Time schedule controller; And
One Monitoring and Controlling unit in order to monitor a plurality of bus activities of a bus at this graphic process unit place, and filters and the corresponding a plurality of graphics processing activity of this graphic process unit in the plurality of bus activity;
Wherein cycle standby time of this graphic process unit is also estimated according to the plurality of graphics processing activity in this Monitoring and Controlling unit, and control this graphic process unit within this cycle standby time in a low power consumpting state;
Wherein this Monitoring and Controlling unit is also controlled the burst of this graphic process unit and is write multiple images to the video frame buffer in this time schedule controller, uses to allow this time schedule controller be enough within this cycle standby time to play in this display device these multiple images that this graphic process unit writes automatically to upgrade to carry out panel.
2. power-supply management system according to claim 1, wherein this Monitoring and Controlling unit sends a wake-up signal to this graphic process unit according to the plurality of graphics processing activity, uses to allow this graphic process unit enter a duty to write these multiple images to this video frame buffer with burst.
3. power-supply management system according to claim 2, wherein when this graphic process unit enters this duty, this Monitoring and Controlling unit is also controlled this graphic process unit and is operated in this duty with one first operating frequency, and wherein this first operating frequency is the predetermined operation frequencies higher than this duty.
4. power-supply management system according to claim 1, wherein this Monitoring and Controlling unit also judges whether these multiple images that are stored in this video frame buffer enough carry out panel for this time schedule controller and automatically upgrade in this cycle standby time;
Wherein ought be stored in these multiple images in this video frame buffer does not enough carry out panel for this time schedule controller and automatically upgrades in this cycle standby time, this wake-up signal is also forced to transmit to this graphic process unit in this Monitoring and Controlling unit, uses and allows this graphic process unit enter a duty.
5. power-supply management system according to claim 1, wherein this Monitoring and Controlling unit also judges whether the plurality of graphics processing activity is started by an application program or an operating system;
When the plurality of graphics processing activity is started by this application program or this operating system, this wake-up signal is also forced to transmit to this graphic process unit in this Monitoring and Controlling unit, uses and allows this graphic process unit enter a duty.
6. a power-supply management system, comprising:
One display device;
One graphic process unit, comprises a Monitoring and Controlling unit, in order to monitor a plurality of bus activities of a bus at this graphic process unit place, and filters and the corresponding a plurality of graphics processing activity of this graphic process unit in the plurality of bus activity; And
Time schedule controller;
Wherein cycle standby time of this graphic process unit is also estimated according to the plurality of graphics processing activity in this Monitoring and Controlling unit, and control this graphic process unit within this cycle standby time in a low power consumpting state;
Wherein this Monitoring and Controlling unit is also controlled this graphic process unit burst and is write multiple images to this video frame buffer, uses and allows this time schedule controller be enough in this display device, play these multiple images that this graphic process unit writes within this standby time.
7. power-supply management system according to claim 6, wherein this Monitoring and Controlling unit sends a wake-up signal to this graphic process unit according to the plurality of graphics processing activity, uses to allow this graphic process unit enter a duty to write these multiple images to this video frame buffer with burst; And work as this graphic process unit, enter this duty, this Monitoring and Controlling unit is also controlled this graphic process unit and is operated in this duty with one first operating frequency, and wherein this first operating frequency is higher than a predetermined operation frequencies of this duty.
8. power-supply management system according to claim 6, wherein this Monitoring and Controlling unit also judges whether these multiple images that are stored in this video frame buffer enough carry out panel for this time schedule controller and automatically upgrade in this cycle standby time;
Wherein ought be stored in these multiple images in this video frame buffer does not enough carry out panel for this time schedule controller and automatically upgrades in this cycle standby time, this wake-up signal is also forced to transmit to this graphic process unit in this Monitoring and Controlling unit, uses and allows this graphic process unit enter a duty.
9. power-supply management system according to claim 6, wherein this Monitoring and Controlling unit also judges whether the plurality of graphics processing activity is started by an application program or an operating system;
When the plurality of graphics processing activity is started by this application program or this operating system, this wake-up signal is also forced to transmit to this graphic process unit in this Monitoring and Controlling unit, uses and allows this graphic process unit enter a duty.
10. a method for managing power supply, for a power-supply management system, this power-supply management system comprises a graphic process unit, a Monitoring and Controlling unit, time schedule controller and a display device, the method comprises:
Utilize this Monitoring and Controlling unit to monitor a plurality of bus activities of a bus at this graphic process unit place, and filter and the corresponding a plurality of graphics processing activity of this graphic process unit in the plurality of bus activity;
Utilize this Monitoring and Controlling unit according to the plurality of graphics processing activity, to estimate cycle standby time of this graphic process unit; And
Utilize the burst of this graphic process unit of this Monitoring and Controlling unit controls to write multiple images to a video frame buffer of this time schedule controller, use allowing this time schedule controller be enough within this cycle standby time to play in this display device these multiple images that this graphic process unit writes automatically to upgrade to carry out panel.
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| CN201210301890.0A CN103631357B (en) | 2012-08-22 | 2012-08-22 | Power-supply management system and method for managing power supply |
| CN201510997277.0A CN105446458B (en) | 2012-08-22 | 2012-08-22 | Power-supply management system and method for managing power supply |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105629843A (en) * | 2016-03-30 | 2016-06-01 | 辽宁开普医疗系统有限公司 | Control system enabling medical X-ray product to realize system sleep energy conservation |
| WO2016165594A1 (en) * | 2015-04-14 | 2016-10-20 | 华为技术有限公司 | Parameter adjustment method and device |
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| US20080034238A1 (en) * | 2006-08-03 | 2008-02-07 | Hendry Ian C | Multiplexed graphics architecture for graphics power management |
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| CN101819510A (en) * | 2008-11-18 | 2010-09-01 | 英特尔公司 | Techniques to control self refresh display functionality |
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| CN103631357B (en) | 2016-11-23 |
| CN105446458B (en) | 2018-09-04 |
| CN105446458A (en) | 2016-03-30 |
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