CN104267801A - Power consumption and bandwidth reducing method and system - Google Patents
Power consumption and bandwidth reducing method and system Download PDFInfo
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- CN104267801A CN104267801A CN201410557022.8A CN201410557022A CN104267801A CN 104267801 A CN104267801 A CN 104267801A CN 201410557022 A CN201410557022 A CN 201410557022A CN 104267801 A CN104267801 A CN 104267801A
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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
- G06F1/3265—Power saving in display device
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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
- G06F1/324—Power saving characterised by the action undertaken by lowering clock frequency
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3618—Control of matrices with row and column drivers with automatic refresh of the display panel using sense/write circuits
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- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Computer Hardware Design (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention discloses a power consumption and bandwidth reducing method and system. The method includes the following steps: outputting first refresh frequency and a first frame message to a display; receiving a first comparison message; when the first comparison message confirms that a second frame message and the first frame message have no distinction, outputting second refresh frequency to the display, wherein the second refresh frequency is lower than the first refresh frequency. By reducing the refresh efficiency, the display screen power consumption of electronic devices (such as tablet computers and smart phones) with display screens can be effectively reduced. Under some circumstances (like such as static scene, video playing suspension and song playing suspension), the system bandwidth output can be effectively reduced, and no adverse effect is generated on the display effect.
Description
Technical field
The present invention relates to powder consumption of electronic equipment control field, particularly relate to a kind of method and system reducing power consumption and bandwidth.
Background technology
The display (as LCD liquid crystal display) of the smart machines such as existing flat board, mobile phone is all based on certain interface scans sequential when exporting, display controller is (as LCDC, lcd controller) can not distinguish content according to this specific display timing generator and do not stop brush screen, thus reach the effect of picture display.
Here defect and weak point are, display controller can not be distinguished content, even static images also can repeat brush, the result caused is that displaying contents does not change, and now under static state can be optimized further for power consumption and bandwidth.
Summary of the invention
For this reason, needing to provide a kind of scheme reducing power consumption and bandwidth, solving existing display screen power consumption and the large problem of bandwidth cost when showing, reach the object that power consumption and bandwidth are under static state optimized further.
For achieving the above object, inventor provide a kind of method reducing power consumption and bandwidth, comprise the following steps:
Export the first refreshing frequency and the first frame information to a display;
Receive first comparison information;
When first comparison information confirms the second frame information and the first frame information is as broad as long, export the second refreshing frequency to this display, this second refreshing frequency is lower than the first refreshing frequency.
Further, also comprise the steps:
Receive second comparison information;
When second comparison information confirms that the 3rd frame information and the second frame information are had any different, output the 3rd refreshing frequency and the 3rd frame information give this display, and the 3rd refreshing frequency is higher than the second refreshing frequency.
Further, described 3rd refreshing frequency is identical with the first refreshing frequency.
Further, described first comparison information obtains as follows: the address of comparing the frame information of the first frame and the second frame, if address is different, then first comparison information is the second frame information and the distinguishing information of the first frame information, otherwise first comparison information information that to be the second frame information and the first frame information as broad as long.
Further, described second comparison information obtains as follows: the address of comparing the frame information of the 3rd frame and the second frame, if address is different, then second comparison information is the 3rd frame information and the distinguishing information of the second frame information, otherwise second comparison information information that to be the 3rd frame information and the second frame information as broad as long.
And inventor also provides a kind of system reducing power consumption and bandwidth, comprise display storage module, display module and power consumption control module, wherein:
Display storage module is for storing the first frame information and the second frame information;
Display module is for exporting the first refreshing frequency and the first frame information to a display;
Power consumption control module is for sending first comparison information to display module;
Display module is used for when first comparison information confirms the second frame information and the first frame information is as broad as long, and export the second refreshing frequency to this display, this second refreshing frequency is lower than the first refreshing frequency.
Further, its display storage module is for storing the 3rd frame information;
Its power consumption control module is for sending second comparison information display;
Its display module is used for when second comparison information confirms that the 3rd frame information and the second frame information are had any different, and output the 3rd refreshing frequency and the 3rd frame information give this display, and the 3rd refreshing frequency is higher than the second refreshing frequency.
Further, described 3rd refreshing frequency is identical with the first refreshing frequency.
Further, power consumption control module is for comparing the address of the frame information of the first frame and the second frame, if address is different, then first comparison information is the second frame information and the distinguishing information of the first frame information, otherwise first comparison information information that to be the second frame information and the first frame information as broad as long.
Further, power consumption control module is for comparing the address of the frame information of the 3rd frame and the second frame, if address is different, then second comparison information is the 3rd frame information and the distinguishing information of the second frame information, otherwise second comparison information information that to be the 3rd frame information and the second frame information as broad as long.
Be different from prior art, technique scheme, by reducing refreshing frequency, effectively can reduce the display screen power consumption of the electronic equipment (as dull and stereotyped, smart mobile phone) of band display screen; (as UI static scene, video playback time-out, playback of songs time-out etc.) effectively can reduce system bandwidth output in some cases, and this programme can not have a negative impact to display effect simultaneously.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that an embodiment system moves static content display switching;
Fig. 2 is the process flow diagram of inventive embodiments;
Fig. 3 is display control signal figure;
Fig. 4 is the structural representation of another embodiment power consumption control module.
Description of reference numerals:
100, display,
110, display controller or electronic equipment,
120, display module,
130, storage module is shown,
140, power consumption control module,
410, information comparison module,
420, frequency adjustment module.
Embodiment
By describe in detail technical scheme technology contents, structural attitude, realized object and effect, coordinate accompanying drawing to be explained in detail below in conjunction with specific embodiment.
Refer to Fig. 1, the present embodiment provides a kind of method reducing power consumption and bandwidth, can be applicable to on the electronic equipment 110 of display 100 or display controller 110, wherein display 100 can be LCD liquid crystal display, LED liquid crystal display, LCD display, light-emitting diode display etc.Display 100 can show static content 112 and dynamic content 114, the content that namely static content shows remains unchanged, as user suspend the video play and do not carry out other operations time, display 100 can show the picture of current hang always and remain unchanged.The content that namely dynamic content shows is change, and as user plays video, then the displaying contents of display 100 can change along with the change of video pictures.As shown in Figure 1, this method can detection display device 100 displaying contents be dynamic content 114 or static content 112, and when static content and dynamic content switch, can the refreshing frequency of switching display 100, avoid refreshing frequency to remain unchanged always and cause the situation of the waste of power consumption and bandwidth, reaching the object reducing power consumption and bandwidth.
In certain embodiments, display controller 110 can include display module 120, display storage module 130 and power consumption control module 140, display module 120 is for exporting refreshing frequency and frame information to display 100, display storage module 130 stores frame information to be shown, and power consumption control module 140 is for the comparison of frame information.The reduction power consumption of this programme and the method for bandwidth comprise the following steps: first, and export the first refreshing frequency and the first frame information to a display 100, then display 100 can show the first frame information with the first refreshing frequency.Wherein, refreshing frequency is the displaying contents number of times shown on display 100 per second.In the embodiment in figure 1, the first refreshing frequency is exported and the first frame information can be performed by the display module 120 of display controller 110.Then receive first comparison information, the first comparison information is for recording the first frame information and the second frame information whether distinguishing result of tool.The comparison step of frame information can be performed by display controller 110 or be performed by other unit outside display controller 110 or module, as long as display controller 110 can receive the first comparison information.
After receiving the first comparison information, display controller 110 judges the first comparison information, when first comparison information confirms the second frame information and the first frame information is as broad as long, export the second refreshing frequency to this display, this second refreshing frequency is lower than the first refreshing frequency.Then the second frame information and the first frame information as broad as long time, display 100 can reduce refreshing frequency, avoids the refreshing frequency when static state display remain unchanged always and cause the situation of the waste of power consumption and bandwidth, reaches the object reducing power consumption and bandwidth.
In order to make display 100 can carry out better Dynamic Announce effect in reduction refreshing frequency situation, further, also comprise the steps: that display controller 110 receives second comparison information.Second comparison information and first comparison information similar, can be produced by display controller 110 or be produced by other unit outside display controller 110 or module.Second comparison information is for recording the 3rd frame information and the second frame information whether distinguishing result of tool.Display controller 110 judges this after receiving second comparison information, and when second comparison information confirms that the 3rd frame information and the second frame information are had any different, display controller 110 exports the 3rd refreshing frequency and the 3rd frame information to display 100.Wherein, the 3rd refreshing frequency is higher than the second refreshing frequency.Then when Dynamic Announce, display 100 can be switched to higher refreshing frequency, display 100 can be shown fast to Dynamic Announce content, thus reach better display effect.
In above-described embodiment, the 3rd refreshing frequency can be different with the first refreshing frequency from the first refreshing frequency, or the 3rd refreshing frequency also can be identical with the first refreshing frequency.Usually, the 3rd refreshing frequency and the first refreshing frequency are all the refreshing frequencys that the display 100 the highest refreshing frequency that can reach or user are arranged, and such display 100 can have good display effect when Dynamic Announce.
In certain embodiments, the situation causing refreshing frequency frequently to switch in order to display controller 110 after of short duration static state display namely enters refreshing frequency switching, then display controller 110 judgement first comparison information obtain the first frame information identical with the second frame information after, after one, interval default time (as 1-2 second), display controller 110 judges whether to receive another comparison information, when by another comparison information, display controller 110 confirms that current display frame information is identical with the first frame information, display controller 110 just exports the second refreshing frequency to display 100, otherwise display controller 110 does not change the refreshing frequency of display 100.By waiting for the default time and after again judging, can ensureing that display 100 is in the static state display state of long period as much as possible, now carry out the change of refreshing frequency again, the situation of the frequent switching of refreshing frequency can be avoided.
In the present invention to frame information whether identical relatively have multiple manner of comparison, as the direct content to frame information compares, or can compare the address of frame information, namely carry out same address and compare.Then first comparison information can obtain as follows: the address of comparing the frame information of the first frame and the second frame, if address is different, then first comparison information is the second frame information and the distinguishing information of the first frame information, otherwise first comparison information information that to be the second frame information and the first frame information as broad as long.And second comparison information also can be compared by same address and obtain, concrete steps are: the address of comparing the frame information of the 3rd frame and the second frame, if address is different, then second comparison information is the 3rd frame information and the distinguishing information of the second frame information, otherwise second comparison information information that to be the 3rd frame information and the second frame information as broad as long.
In a certain embodiment, can compare and the above embodiments in conjunction with same address, obtain the process as Fig. 2.Display controller 110 reads the address of the second frame information in step S201, the first frame is compared whether identical with the address of the frame information of the second frame in step S202, if different, then enter step S211 undo, namely the refreshing frequency of display 100 is not changed, otherwise enter step S203 and export the second refreshing frequency to this display, namely reduce the refreshing frequency of display 100.After refreshing frequency reduces, display controller enters the address that step S204 reads the frame information of the 3rd frame, whether then entering step S205, to compare the 3rd frame identical with the address of the frame information of the second frame, if identical, i.e. displaying contents or constant, then enter step S211 undo, namely do not change the refreshing frequency of display 100, otherwise enter step S206 and export the 3rd frame information and the 3rd refreshing frequency to display 100.
In the present invention, the switching of display controller 110 pairs of refreshing frequencys exports and can take as under type, can pass through the frequency reducing clock signal, as shown in Figure 3 for static state display.When normally showing, clock signal is as the signal before the T moment, and now the cycle of row signal is T1.When display controller 110 is when determining frame information and being identical, from the T moment, then reduce the frequency of clock signal, now the cycle of signal becomes T2 (T2 is greater than T1), namely extend the cycle of row signal, the cycle of column signal also can be elongated simultaneously, thus decrease the reading times with address date in display buffer in the unit interval, reduce read-write power consumption, save system bandwidth, and now because displaying contents is static constant, thus do not affect display effect.
And inventor also provides a kind of system reducing power consumption and bandwidth, as shown in Figure 1, display storage module 130, display module 120 and power consumption control module 140 is comprised, for controlling display 100.
Wherein: display storage module 130 is for storing the first frame information and the second frame information; Display module 120 is for exporting the first refreshing frequency and the first frame information to display 100; Power consumption control module 140 is for sending first comparison information to display module 120; Display module 120 is for when first comparison information confirms the second frame information and the first frame information is as broad as long, and export the second refreshing frequency to this display, this second refreshing frequency is lower than the first refreshing frequency.Then the second frame information and the first frame information as broad as long time, display 100 can reduce refreshing frequency, avoids the refreshing frequency when static state display remain unchanged always and cause the situation of the waste of power consumption and bandwidth, reaches the object reducing power consumption and bandwidth.
In order to make display 100 can carry out better Dynamic Announce effect in reduction refreshing frequency situation, further, display storage module 130 is for storing the 3rd frame information; Power consumption control module 140 is for sending second comparison information display; Display module 120 is for when second comparison information confirms that the 3rd frame information and the second frame information are had any different, and output the 3rd refreshing frequency and the 3rd frame information give this display, and wherein the 3rd refreshing frequency is higher than the second refreshing frequency.Improve the refreshing frequency of display 100 when Dynamic Announce, reach better display effect.
In said system embodiment, the 3rd refreshing frequency can be different with the first refreshing frequency from the first refreshing frequency, or the 3rd refreshing frequency also can be identical with the first refreshing frequency.
In the present invention to frame information whether identical relatively have multiple manner of comparison, as the direct content to frame information compares, or can compare the address of frame information, namely carry out same address and compare.Then power consumption control module 140 also includes information comparison module 410 and frequency adjustment module 420, as shown in Figure 4, information comparison module 410 in power consumption control module 140 is for comparing the address of the frame information of the first frame and the second frame, if address is different, then first comparison information is the second frame information and the distinguishing information of the first frame information, otherwise first comparison information information that to be the second frame information and the first frame information as broad as long.And information comparison module 410 also can be used for the address of the frame information comparing the 3rd frame and the second frame, if address is different, then second comparison information is the 3rd frame information and the distinguishing information of the second frame information, otherwise second comparison information information that to be the 3rd frame information and the second frame information as broad as long.The refreshing frequency of frequency adjustment module 420 for regulating display module 120 to output to display 100.Reach the object of the refreshing frequency of switching display 100, thus reduce power consumption and bandwidth.
It should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or terminal device and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or terminal device.When not more restrictions, the key element limited by statement " comprising ... " or " comprising ... ", and be not precluded within process, method, article or the terminal device comprising described key element and also there is other key element.In addition, in this article, " be greater than ", " being less than ", " exceeding " etc. be interpreted as and do not comprise this number; " more than ", " below ", " within " etc. be interpreted as and comprise this number.
Those skilled in the art should understand, the various embodiments described above can be provided as method, device or computer program.These embodiments can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.The hardware that all or part of step in the method that the various embodiments described above relate to can carry out instruction relevant by program has come, described program can be stored in the storage medium that computer equipment can read, for performing all or part of step described in the various embodiments described above method.Described computer equipment, includes but not limited to: personal computer, server, multi-purpose computer, special purpose computer, the network equipment, embedded device, programmable device, intelligent mobile terminal, intelligent home device, wearable intelligent equipment, vehicle intelligent equipment etc.; Described storage medium, includes but not limited to: the storage of RAM, ROM, magnetic disc, tape, CD, flash memory, USB flash disk, portable hard drive, storage card, memory stick, the webserver, network cloud storage etc.
The various embodiments described above describe with reference to the process flow diagram of method, equipment (system) and computer program according to embodiment and/or block scheme.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block scheme and/or square frame and process flow diagram and/or block scheme and/or square frame.These computer program instructions can being provided to the processor of computer equipment to produce a machine, making the instruction performed by the processor of computer equipment produce device for realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer equipment readable memory that works in a specific way of vectoring computer equipment, the instruction making to be stored in this computer equipment readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be loaded on computer equipment, make to perform sequence of operations step on a computing device to produce computer implemented process, thus the instruction performed on a computing device is provided for the step realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
Although be described the various embodiments described above; but those skilled in the art are once obtain the basic creative concept of cicada; then can make other change and amendment to these embodiments; so the foregoing is only embodiments of the invention; not thereby scope of patent protection of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included within scope of patent protection of the present invention.
Claims (10)
1. reduce a method for power consumption and bandwidth, it is characterized in that: comprise the following steps:
Export the first refreshing frequency and the first frame information to a display;
Receive first comparison information;
When first comparison information confirms the second frame information and the first frame information is as broad as long, export the second refreshing frequency to this display, this second refreshing frequency is lower than the first refreshing frequency.
2. the optimization method of reduction power consumption according to claim 1 and bandwidth, is characterized in that: also comprise the steps:
Receive second comparison information;
When second comparison information confirms that the 3rd frame information and the second frame information are had any different, output the 3rd refreshing frequency and the 3rd frame information give this display, and the 3rd refreshing frequency is higher than the second refreshing frequency.
3. the method for reduction power consumption according to claim 2 and bandwidth, is characterized in that: described 3rd refreshing frequency is identical with the first refreshing frequency.
4. the method for reduction power consumption according to claim 1 and 2 and bandwidth, it is characterized in that: described first comparison information obtains as follows: the address of comparing the frame information of the first frame and the second frame, if address is different, then first comparison information is the second frame information and the distinguishing information of the first frame information, otherwise first comparison information information that to be the second frame information and the first frame information as broad as long.
5. the method for reduction power consumption according to claim 2 and bandwidth, it is characterized in that: described second comparison information obtains as follows: the address of comparing the frame information of the 3rd frame and the second frame, if address is different, then second comparison information is the 3rd frame information and the distinguishing information of the second frame information, otherwise second comparison information information that to be the 3rd frame information and the second frame information as broad as long.
6. reduce a system for power consumption and bandwidth, it is characterized in that: comprise display storage module, display module and power consumption control module, wherein:
Display storage module is for storing the first frame information and the second frame information;
Display module is for exporting the first refreshing frequency and the first frame information to a display;
Power consumption control module is for sending first comparison information to display module;
Display module is used for when first comparison information confirms the second frame information and the first frame information is as broad as long, and export the second refreshing frequency to this display, this second refreshing frequency is lower than the first refreshing frequency.
7. the system of reduction power consumption according to claim 6 and bandwidth, is characterized in that:
Its display storage module is for storing the 3rd frame information;
Its power consumption control module is for sending second comparison information display;
Its display module is used for when second comparison information confirms that the 3rd frame information and the second frame information are had any different, and output the 3rd refreshing frequency and the 3rd frame information give this display, and the 3rd refreshing frequency is higher than the second refreshing frequency.
8. the system of reduction power consumption according to claim 7 and bandwidth, is characterized in that: described 3rd refreshing frequency is identical with the first refreshing frequency.
9. the reduction power consumption according to claim 6 or 7 and the system of bandwidth, it is characterized in that: power consumption control module is for comparing the address of the frame information of the first frame and the second frame, if address is different, then first comparison information is the second frame information and the distinguishing information of the first frame information, otherwise first comparison information information that to be the second frame information and the first frame information as broad as long.
10. the system of reduction power consumption according to claim 7 and bandwidth, it is characterized in that: power consumption control module is for comparing the address of the frame information of the 3rd frame and the second frame, if address is different, then second comparison information is the 3rd frame information and the distinguishing information of the second frame information, otherwise second comparison information information that to be the 3rd frame information and the second frame information as broad as long.
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| CN201410557022.8A CN104267801A (en) | 2014-10-20 | 2014-10-20 | Power consumption and bandwidth reducing method and system |
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