CN103971658A - Display driving device and display driving method - Google Patents
Display driving device and display driving method Download PDFInfo
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- CN103971658A CN103971658A CN201310044532.0A CN201310044532A CN103971658A CN 103971658 A CN103971658 A CN 103971658A CN 201310044532 A CN201310044532 A CN 201310044532A CN 103971658 A CN103971658 A CN 103971658A
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
Abstract
The invention provides a display driving device and a display driving method. The display driving device comprises a signal transmitting interface, a sequential control circuit and a picture detecting circuit, wherein the signal transmitting interface is used for receiving video image data and outputting the video image data; the sequential control circuit is used for receiving the video image data and driving a display panel according to the video image data; and the picture detecting circuit judges whether the video image data are a static picture or not, and judges whether the display driving device enters a power saving mode or not according to the judgment result. In the power saving mode, the signal transmitting interface covers part of the video image data according to the judgment result, and the part of the covered video image data are not outputted to the sequential control circuit.
Description
Technical field
The present invention relates to a kind of Drive And Its Driving Method, and be particularly related to a kind of display drive apparatus and display drive method thereof.
Background technology
Generally speaking, display drive apparatus has or not according to its built-in storage, can divide into containing the display drive apparatus of RAM and the display drive apparatus of RAM-less.The effect of this built-in storage is generally the vedio data providing in order to temporary host side, and waits the indication of clock signal, and the vedio data that output is stored is to next stage circuit.
Display drive apparatus for RAM-less, because it is inner, there is no configuration as the built-in storage of the types such as frame buffer (frame buffer), therefore host side must continue to transmit by signal transmission interface the synchronizing signals such as vedio data and vertical, level to display drive apparatus, and display panel could normal display video image picture.This type of transmission interface in order to transmission of signal can be RGB pattern interface, or mobile industry processor interface (Mobile Industry Processor Interface, MIPI).
No matter by any signal transmission interface, transmit data, the power consumption stream (current consumption) of display drive apparatus is broadly divided into data is written into the simulation power consumption stream that panel (panel loading) causes, and the digital power consumption stream that causes of the digital signal of signal transmission interface action.Display drive apparatus for RAM-less, because host side must continue data to write to signal transmission interface, therefore digital power consumption stream is very huge to the integral body consumption current affects of display drive apparatus, under some application, even can be higher than simulation power consumption stream.Therefore, how reducing digital power consumption stream real to the power consumption of display drive apparatus is one of current important topic.
Summary of the invention
The invention provides a kind of display drive apparatus, can provide electricity-saving function according to display frame, reduce digital power consumption stream.
The invention provides a kind of display drive method of above-mentioned display drive apparatus, can provide electricity-saving function according to display frame, reduce digital power consumption stream.
The invention provides a kind of display drive apparatus, in order to drive display panel according to vedio data.Described display drive apparatus comprises signal transmission interface, sequential control circuit and picture testing circuit.Described signal transmission interface is in order to receive described vedio data, and exports described vedio data.Described sequential control circuit is coupled to described signal transmission interface, in order to receive described vedio data, and drives described display panel according to described vedio data.Described picture testing circuit is coupled to described signal transmission interface, in order to receive described vedio data.Described picture testing circuit judges whether described vedio data is tableaux, and decides described display drive apparatus whether to enter battery saving mode according to judged result.In described battery saving mode, described signal transmission interface is according to described judged result, the partial video view data in the described vedio data of shade (mask), thus do not export described partial video view data to described sequential control circuit.
In one embodiment of this invention, above-mentioned vedio data comprises a plurality of frame data.Described signal transmission interface in described battery saving mode, the partial frame data described in shade in vedio data.
In one embodiment of this invention, above-mentioned signal transmission interface is more exported vertical synchronizing signal to described sequential control circuit.In described battery saving mode, by the described partial frame data of shade, in response to described vertical synchronizing signal, with the sequential length of fixing, be spaced in described frame data.
In one embodiment of this invention, above-mentioned vedio data also comprises a plurality of start signals.Described start signal is between described frame data, in order to identify described frame data.
In one embodiment of this invention, above-mentioned signal transmission interface comprises acceptor circuit.Described acceptor circuit is in order to receive described vedio data.In described battery saving mode, described picture testing circuit is according to described start signal, acceptor circuit described in forbidden energy.
In one embodiment of this invention, above-mentioned display drive apparatus also comprises gate driver circuit.Described gate driver circuit is in order to provide sweep signal to drive described display panel.In described battery saving mode, in response to by the described partial frame data of shade, described sequential control circuit output control signal is carried out gate driver circuit described in forbidden energy.
In one embodiment of this invention, above-mentioned vedio data comprises a plurality of frame data, and described in each, frame data comprise a plurality of line data.Described signal transmission interface is in described battery saving mode, and shade is partial line data in frame data described in each.
In one embodiment of this invention, above-mentioned signal transmission interface is more exported horizontal-drive signal to described sequential control circuit.In described battery saving mode, by the described partial line data of shade, in response to described horizontal-drive signal, with the sequential length of fixing, be spaced at described in each in frame data.
In one embodiment of this invention, in a plurality of first frame data of described frame data, by the described partial line data of shade, comprised the even number line data in described line data.In a plurality of second frame data of described frame data, by the described partial line data of shade, comprised the odd number line data in described line data.Described the first frame data and described the second frame data are sequentially spaced in sequential.
In one embodiment of this invention, above-mentioned vedio data also comprises a plurality of start signals.Described start signal is between described frame data, in order to identify described frame data.
In one embodiment of this invention, above-mentioned display drive apparatus also comprises gate driver circuit.In described battery saving mode, during described partial line data are by shade, described gate driver circuit provides sweep signal to drive described display panel.
The invention provides a kind of display drive method, in order to drive display panel according to vedio data.Described display drive method comprises the steps.Receive described vedio data.Judge whether described vedio data is tableaux.According to judged result, determine whether described display drive apparatus enters battery saving mode.In described battery saving mode, according to described judged result, the partial video view data described in shade in vedio data.According to described vedio data, drive described display panel.
In one embodiment of this invention, above-mentioned vedio data comprises a plurality of frame data.In the step of the partial video view data in vedio data described in shade, the partial frame data described in shade in vedio data.
In one embodiment of this invention, above-mentioned display drive method more drives described display panel according to vertical synchronizing signal.In described battery saving mode, by the described partial frame data of shade, in response to described vertical synchronizing signal, with the sequential length of fixing, be spaced in described frame data.
In one embodiment of this invention, above-mentioned vedio data also comprises a plurality of start signals.Described start signal is between described frame data, in order to identify described frame data.
In one embodiment of this invention, above-mentioned display drive method utilizes acceptor circuit to receive described vedio data.Described display drive method is also included in described battery saving mode, according to described start signal, and acceptor circuit described in forbidden energy.
In one embodiment of this invention, above-mentioned display drive method also comprises the steps.Utilize gate driver circuit that sweep signal is provided, to drive described display panel.In described battery saving mode, in response to by the described partial frame data of shade, output control signal is carried out gate driver circuit described in forbidden energy.
In one embodiment of this invention, above-mentioned vedio data comprises a plurality of frame data, and described in each, frame data comprise a plurality of line data.In the step of the partial video view data in vedio data described in shade, shade is partial line data in frame data described in each.
In one embodiment of this invention, above-mentioned display drive method more drives described display panel according to horizontal-drive signal.In described battery saving mode, by the described partial line data of shade, in response to described horizontal-drive signal, with the sequential length of fixing, be spaced at described in each in frame data.
In one embodiment of this invention, in a plurality of first frame data of described frame data, by the described partial line data of shade, comprised the even number line data in described line data.In a plurality of second frame data of described frame data, by the described partial line data of shade, comprised the odd number line data in described line data.Described the first frame data and described the second frame data are sequentially spaced in sequential.
In one embodiment of this invention, above-mentioned vedio data also comprises a plurality of start signals.Described start signal is between described frame data, in order to identify described frame data.
In one embodiment of this invention, above-mentioned display drive method is also included in described battery saving mode, during described partial line data are by shade, utilizes gate driver circuit that sweep signal is provided, to drive described display panel.
Based on above-mentioned, in exemplary embodiment of the present invention, display drive apparatus has battery saving mode, can reduce digital power consumption stream.In described battery saving mode, signal transmission interface can shade described in partial video view data in vedio data, do not export by the vedio data of shade to sequential control circuit, to reach power saving effect.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate accompanying drawing to be described in detail below.
Accompanying drawing explanation
Fig. 1 illustrates the schematic diagram of the display drive apparatus of one embodiment of the invention.
Fig. 2 illustrates the outline flowchart whether battery saving mode of the display drive apparatus of one embodiment of the invention starts.
Fig. 3 illustrates the summary oscillogram of various signals of the display drive apparatus of one embodiment of the invention.
Fig. 4 illustrates the summary oscillogram of various signals of the display drive apparatus of another embodiment of the present invention.
Fig. 5 illustrates the summary oscillogram of various signals of the display drive apparatus of another embodiment of the present invention.
Fig. 6 illustrates the schematic diagram of the display drive apparatus of another embodiment of the present invention.
Fig. 7 is the flow chart of steps of the display drive method of one embodiment of the invention.
[main element symbol description]
100,600: display drive apparatus
110,610: signal transmission interface
112,612: acceptor circuit
120,620: sequential control circuit
130,630: picture testing circuit
140,640: source electrode drive circuit
150,650: gate driver circuit
200: host side
660: clock generation circuit
670: memory circuitry
HS: horizontal-drive signal
VS: vertical synchronizing signal
SD, SD ': vedio data
SG: grid control signal
SoT: start signal
F1, F2, F3, F4, F5, F6, F7, F8, FN: frame data
L1, L2, L3, L4, L5, LM: line data
S200, S210, S220, S230, S240, S700, S710, S720, S730, S740: step
Embodiment
Fig. 1 illustrates the schematic diagram of the display drive apparatus of one embodiment of the invention.Please refer to Fig. 1, the display drive apparatus 100 of the present embodiment is in order to from host side 200 receiver, video view data SD, and drives display panel (not illustrating) according to vedio data SD.In the present embodiment, in order to reach the object of power saving, display drive apparatus 100 can be modulated epideictic behaviour voluntarily, comprises and judges whether vedio data SD is tableaux, determines whether entering battery saving mode, does not need to adjust the design architecture of host side 200.
Particularly, the display drive apparatus 100 of the present embodiment comprises signal transmission interface 110, sequential control circuit 120, picture testing circuit 130, source electrode drive circuit 140 and gate driver circuit 150.In the present embodiment, signal transmission interface 110 comprises acceptor circuit 112, in order to receiver, video view data SD, and output video image data SD, horizontal-drive signal HS and vertical synchronizing signal VS are to sequential control circuit 120 and picture testing circuit 130.Signal transmission interface 110 herein can be RGB pattern interface, MIPI pattern interface or other signal transmission interfaces, and the present invention is not limited.In the enforcement example of MIPI pattern interface, acceptor circuit 112 is for example the DPHY circuit that meets MIPI pattern interface.
In the present embodiment, sequential control circuit 120 is coupled to signal transmission interface 110, in order to receiver, video view data SD, horizontal-drive signal HS and vertical synchronizing signal VS.And, sequential control circuit 120 transmission vedio data SD, horizontal-drive signal HS and vertical synchronizing signal VS are to source electrode drive circuit 140 and gate driver circuit 150, to allow source electrode drive circuit 140 and gate driver circuit 150 drive accordingly described display panel.It is worth mentioning that, in order to reach the object of power saving, in described battery saving mode, be sent to the vedio data SD of source electrode drive circuit 140, partial frame data wherein or line data may be by 120 shades of sequential control circuit, thereby do not export by the partial frame data of shade or line data to source electrode drive circuit 140, to reduce Shuo Zi Mao electric current.
In the present embodiment, picture testing circuit 130 is coupled between signal transmission interface 110 and sequential control circuit 120, with receiver, video view data SD.In this example, picture testing circuit 130 can judge whether the vedio data SD that host side 200 transmits is tableaux, and decides display drive apparatus 100 whether to enter battery saving mode according to judged result.Below illustrate how picture testing circuit 130 determines whether described display drive apparatus 100 enters battery saving mode.
Fig. 2 illustrates the outline flowchart whether battery saving mode of the display drive apparatus of one embodiment of the invention starts.Please refer to Fig. 1 and Fig. 2, the judgement flow process of the present embodiment comprises the steps.First, in step S200, picture testing circuit 130 receives the vedio data SD that signal transmission interface 110 is exported.Then, in step S210, picture testing circuit 130 judges whether vedio data SD is tableaux, its judgment mode comprises take frame as basis, according to the characteristics of the image analytic degree of two pictures in front and back, brightness of image, image spectrum distribution, the image difference opposite sex, image correlation, image color number, image update rate or display mode etc., the otherness of carrying out more between the two characteristics, thus judge whether current vedio data SD is tableaux.
Therefore,, in step S210, through judgement, if current received vedio data SD is tableaux, picture testing circuit 130 can be controlled display drive apparatus 100 and enter battery saving mode, as step S220.In described battery saving mode, signal transmission interface 110 can be according to described judged result, the partial video view data in shade vedio data SD, thus picture testing circuit 130 is not exported by the vedio data of shade to sequential control circuit 120.Otherwise in step S210, through judgement, if current received vedio data SD is dynamic menu, picture testing circuit 130 can be controlled display drive apparatus 100 and enter non-battery saving mode, as step S230.Described non-battery saving mode is for example normal manipulation mode, in this operator scheme, signal transmission interface 110 can shade vedio data SD, but directly vedio data SD is exported to sequential control circuit 120 via picture testing circuit 130, to show the operation of image.
Then,, in step S240, signal transmission interface 110 is passed to sequential control circuit 120 via picture testing circuit 130 by vedio data SD again.The vedio data SD of this step may be in described battery saving mode, and partial data, by the vedio data SD of shade, may be also in described non-battery saving mode, there is no data by the vedio data SD of shade.
In exemplary embodiment of the present invention, when display drive apparatus 100 enters in battery saving mode, its mode of carrying out power-save operation at least comprises the partial frame data in vedio data SD described in shade, shade is partial line data in frame data described in each, or the direct acceptor circuit 112 of disable signal transmission interface 110 inside.The embodiment of different power-save operation is below described respectively.
Fig. 3 illustrates the summary oscillogram of various signals of the display drive apparatus of one embodiment of the invention.Please refer to Fig. 1 and Fig. 3, the grid control signal SG that in the signal waveform illustrating at Fig. 3, is from top to bottom sequentially vedio data SD, vertical synchronizing signal VS, exports the vedio data SD ' of source electrode drive circuit 140 to and export gate driver circuit 150 to.
In the present embodiment, the MIPI pattern interface of take is example, vedio data SD is for example that host side 200 is passed to the view data of signal transmission interface 110 via DP/NP data channel (Data lane), and it has high speed data transfer characteristic (high speed data transfer).In this example, vedio data SD be take frame as basis, roughly can divide into many frame data F1 to FN.In battery saving mode, the signal transmission interface 110 of the present embodiment, after receiving vedio data SD, is understood the partial frame data in shade vedio data SD.In the present embodiment, signal transmission interface 110 is by after frame data F3, F6 shade, then vedio data SD is passed to sequential control circuit 120.Therefore, from the angle of vedio data SD ', by partial frame data F3, the F6 of shade in response to vertical synchronizing signal VS, with the sequential length of fixing, being arranged in frame data F1 to FN of interval, sequential length herein for example refers to the sequential length of two image durations.That is to say, sequentially output frame data F1, F2 are to sequential control circuit 120 for signal transmission interface 110, and output frame data F3 is not to sequential control circuit 120, i.e. shade frame data F3.Then, sequentially output frame data F4, F5 are to sequential control circuit 120 for signal transmission interface 110, and output frame data F6 is not to sequential control circuit 120, i.e. shade frame data F6.In Fig. 3, the corresponding frame data F3 of vedio data SD ', F6 part are denoted as OFF, represent that both are by shade.Therefore,, by the mode of this kind of shade frame data, in this example, the operating frequency of display panel can be reduced to 1/3rd, thereby reach the object of power saving.It should be noted, in the present embodiment, by the quantity of the frame data of shade and in the sequential position of vedio data SD ', can decide according to actual design demand, the present invention is not limited.
It is worth mentioning that, in battery saving mode, in response to frame data F3, the F6 by shade, sequential control circuit 120 carrys out forbidden energy gate driver circuit 150 in the grid control signal SG of corresponding sequential output low level VGL.In Fig. 3, the corresponding frame data F3 of grid control signal SG, F6 part are denoted as VGL, represent that gate driver circuit 150 is disabled.In other words, gate driver circuit 150 only, corresponding to during not by the sequential of the frame data of shade, can carry out normal turntable driving operation to display panel.
In the embodiments of figure 3, the mode that display drive apparatus 100 carries out power-save operation is to reach with the partial frame data in vedio data SD described in shade, but the present invention is not limited to this.In another embodiment, picture testing circuit 130 is the direct acceptor circuit 112 of disable signal transmission interface 110 inside also, so that acceptor circuit 112 frames received certificate not, obtains similar and effects shade frame data.
Fig. 4 illustrates the summary oscillogram of various signals of the display drive apparatus of another embodiment of the present invention.Please refer to Fig. 1 and Fig. 4, the signal waveform of vedio data SD, the vertical synchronizing signal VS that Fig. 4 illustrates, vedio data SD ' and grid control signal SG is similar to Fig. 3 person of illustrating, yet Fig. 4 is further open in order to control the signal waveform of the control signal PHY whether acceptor circuit 112 work.
Particularly, in the present embodiment, vedio data SD comprises a plurality of start signal SoT.These a little start signal SoT are between frame data F1 to FN, in order to identify frame data F1 to FN.When signal transmission interface 110 receives start signal SoT, the frame data after the start signal SoT that represents to receive are to be different from received start signal SoT another frame data before.That is to say that two data before and after start signal SoT represent the frame data during different frame.
Therefore,, in battery saving mode, picture testing circuit 130 is to carry out forbidden energy acceptor circuit 112 according to start signal SoT.For example, according to judged result, if sequential control circuit 120 is set to not output frame data F3 in the image duration of frame data F3, picture testing circuit 130 is when the start signal SoT receiving before being positioned at frame data F3, can directly utilize low level control signal PHY to carry out forbidden energy acceptor circuit 112 (being denoted as OFF in Fig. 4), with control acceptor circuit 112 not frames received according to F3.Until picture testing circuit 130 receives while being positioned at after frame data F3 start signal SoT, picture testing circuit 130 is activation acceptor circuit 112 again.From the angle of vedio data SD ', because acceptor circuit 112 does not have frames received according to F3, so sequential control circuit 120 and source electrode drive circuit 140 can not receive frame data F3 yet.Therefore, the mode of this kind of direct forbidden energy acceptor circuit 112, also can reach the object of the frame data F3 in shade vedio data SD '.In addition, utilize the mode of forbidden energy acceptor circuit 112 to carry out the enforcement example of shade frame data F6 or other frame data, when can be according to above-mentioned teaching, by that analogy.
In the embodiment of Fig. 3 and Fig. 4, display drive apparatus 100 carries out the mode of power-save operation, is respectively with the partial frame data in vedio data SD described in shade, and directly the mode of forbidden energy acceptor circuit 112 is reached, but the present invention is not limited to this.In another embodiment, picture testing circuit 130 also can, by the mode of shade partial line data in frame data described in each, obtain the effect of power saving.
Fig. 5 illustrates the summary oscillogram of various signals of the display drive apparatus of another embodiment of the present invention.Please refer to Fig. 1 and Fig. 5, in the signal waveform illustrating at Fig. 5, the grid control signal SG that is from top to bottom sequentially vedio data SD, horizontal-drive signal HS, vertical synchronizing signal VS, exports the vedio data SD ' of source electrode drive circuit 140 to and export gate driver circuit 150 to.
In the present embodiment, each frame data comprise a plurality of line data.In described battery saving mode, the partial line data in each frame data of picture testing circuit 130 shades, reduce digital power consumption stream.In this example, by the line data of shade, in response to horizontal-drive signal HS, with the sequential length of fixing, be spaced in each frame data, sequential length herein for example refers to the sequential length of line data.Take frame data F1, F2 as example, frame data F1, F2 comprise respectively line data L1 to LM, in frame data F1, picture testing circuit 130 shade line data L2, L4 ..., LM grade in an imperial examination even number line data, online data L2, L4 ..., in LM, the sequential length of any line data and line data of its next line data break.Similarly, in frame data F2, picture testing circuit 130 be set to shade line data L1, L3, L5 ..., LM-1 (not illustrating) grade in an imperial examination odd number line data, online data L1, L3, L5 ..., in LM-1, the interval of any line data and its next line data is also the sequential length of line data.Therefore, by above-mentioned shade rule, can analogize in frame data F3 to FN, sequential position and arrangement mode by the line data of shade, do not repeat them here.
In summary, in the present embodiment, a plurality of the first frame data F1 of frame data F1 to FN, F3, F5 ..., in FN-1, by even number line data L2, L4 in the line packet vinculum data L1 to LM of shade ..., LM.A plurality of the second frame data F2, the F4 of frame data F1 to FN ..., in FN, by the odd number line data in the line packet vinculum data L1 to LM of shade.Wherein, the first frame data F1, F3, F5 ..., FN-1 and the second frame data F2, F4 ..., FN is sequentially spaced in sequential.
It should be noted, in the present embodiment, above-mentioned is only to illustrate by the sequential position of the line data of shade and arrangement mode, and the present invention is not limited to this.In addition, it is worth mentioning that, in described battery saving mode, during partial line data are by shade, gate driver circuit 150 is still in normal turntable driving state, continues to provide sweep signal to drive described display panel.
In the embodiment in figure 1, display drive apparatus 100 is the display drive apparatus that belong to RAM-less, that is to say, its inside does not have configuration as the built-in storage of the types such as frame buffer.Yet display drive method of the present disclosure is not limited to be applied in the display drive apparatus of RAM-less, also can be applied in the display drive apparatus containing RAM.
Fig. 6 illustrates the schematic diagram of the display drive apparatus of another embodiment of the present invention.Please refer to Fig. 1 and Fig. 6, the display drive apparatus 600 of the present embodiment is similar to the display drive apparatus 100 of Fig. 1, yet main difference is for example that display drive apparatus 600 also comprises clock generation circuit 660 and memory circuitry 670 between the two.In the present embodiment, the vedio data SD that memory circuitry 670 provides in order to temporary host side 200, and wait the indication of clock generation circuit 660, the vedio data SD that output is stored is to sequential control circuit 620.In addition, clock generation circuit 660 also can produce horizontal-drive signal HS and vertical synchronizing signal VS to sequential control circuit 620, drives the use of display panels for sequential control circuit 620.
Fig. 7 is the flow chart of steps of the display drive method of one embodiment of the invention.Referring to Fig. 1 and Fig. 7, the display drive method of the present embodiment is for example suitable for being applied in the display drive apparatus 100,600 of Fig. 1 or Fig. 6, and it comprises the steps.
First, in step S700, display drive apparatus 100 receiver, video view data SD.Then,, in step S710, picture testing circuit 130 judges whether vedio data SD is tableaux.Afterwards, in step S720, picture testing circuit 130, according to judged result, determines whether display drive apparatus 100 enters battery saving mode.Then,, in step S730, in described battery saving mode, picture testing circuit 130 is according to described judged result, the partial video view data in shade vedio data SD.Then,, in step S740, display drive apparatus 100 drives described display panel according to vedio data SD.
In addition, the display drive method of embodiments of the invention can be obtained enough teachings, suggestion and implementation in the narration of Fig. 1 to Fig. 6 embodiment, therefore repeats no more.
In sum, in exemplary embodiment of the present invention, display drive apparatus has battery saving mode, can reduce digital power consumption stream.In described battery saving mode, signal transmission interface can shade described in partial video view data in vedio data, do not export by the vedio data of shade to sequential control circuit, to reach power saving effect.In addition, display drive apparatus also can utilize the mode of the acceptor circuit of disable signal transmission interface inside, makes not frames received certificate of acceptor circuit, thereby obtains similar and effects shade frame data.
Although the present invention with embodiment openly as above; so it is not in order to limit the present invention, those skilled in the art, without departing from the spirit and scope of the present invention; when doing a little change and retouching, therefore protection scope of the present invention is when being as the criterion depending on appended claims confining spectrum.
Claims (22)
1. a display drive apparatus, is characterized in that, in order to drive display panel according to vedio data, described display drive apparatus comprises:
Signal transmission interface, in order to receive described vedio data, and exports described vedio data;
Sequential control circuit, is coupled to described signal transmission interface, in order to receive described vedio data, and drives described display panel according to described vedio data; And
Picture testing circuit, is coupled to described signal transmission interface, and in order to receive described vedio data, judge whether described vedio data is tableaux, and decide described display drive apparatus whether to enter battery saving mode according to judged result,
Wherein in described battery saving mode, described signal transmission interface is according to described judged result, the partial video view data described in shade in vedio data, thus do not export described partial video view data to described sequential control circuit.
2. display drive apparatus as claimed in claim 1, wherein said vedio data comprises a plurality of frame data, described signal transmission interface in described battery saving mode, the partial frame data described in shade in vedio data.
3. display drive apparatus as claimed in claim 2, wherein said signal transmission interface is more exported vertical synchronizing signal to described sequential control circuit, in described battery saving mode, by the described partial frame data of shade, in response to described vertical synchronizing signal, with the sequential length of fixing, be spaced in described frame data.
4. display drive apparatus as claimed in claim 2, wherein said vedio data also comprises a plurality of start signals, described start signal is between described frame data, in order to identify described frame data.
5. display drive apparatus as claimed in claim 4, wherein said signal transmission interface comprises acceptor circuit, and described acceptor circuit is in order to receive described vedio data, in described battery saving mode, described picture testing circuit is according to described start signal, acceptor circuit described in forbidden energy.
6. display drive apparatus as claimed in claim 2, also comprise gate driver circuit, in order to provide sweep signal to drive described display panel, wherein in described battery saving mode, in response to by the described partial frame data of shade, described sequential control circuit output control signal is carried out gate driver circuit described in forbidden energy.
7. display drive apparatus as claimed in claim 1, wherein said vedio data comprises a plurality of frame data, and described in each, frame data comprise a plurality of line data, and described signal transmission interface is in described battery saving mode, and shade is partial line data in frame data described in each.
8. display drive apparatus as claimed in claim 7, wherein said signal transmission interface is more exported horizontal-drive signal to described sequential control circuit, in described battery saving mode, by the described partial line data of shade, in response to described horizontal-drive signal, with the sequential length of fixing, be spaced at described in each in frame data.
9. display drive apparatus as claimed in claim 8, wherein in a plurality of first frame data of described frame data, described partial line data by shade comprise the even number line data in described line data, in a plurality of second frame data of described frame data, described partial line data by shade comprise the odd number line data in described line data, and wherein said the first frame data and described the second frame data are sequentially spaced in sequential.
10. display drive apparatus as claimed in claim 7, wherein said vedio data also comprises a plurality of start signals, described start signal is between described frame data, in order to identify described frame data.
11. display drive apparatus as claimed in claim 7, also comprise gate driver circuit, and in described battery saving mode, during described partial line data are by shade, described gate driver circuit provides sweep signal to drive described display panel.
12. 1 kinds of display drive methods, is characterized in that, in order to drive display panel according to vedio data, described display drive method comprises:
Receive described vedio data;
Judge whether described vedio data is tableaux;
According to judged result, determine whether described display drive apparatus enters battery saving mode;
In described battery saving mode, according to described judged result, the partial video view data described in shade in vedio data; And
According to described vedio data, drive described display panel.
13. display drive methods as claimed in claim 12, wherein said vedio data comprises a plurality of frame data, in the step of the partial video view data in vedio data described in shade, the partial frame data described in shade in vedio data.
14. display drive methods as claimed in claim 13, wherein said display drive method more drives described display panel according to vertical synchronizing signal, in described battery saving mode, by the described partial frame data of shade, in response to described vertical synchronizing signal, with the sequential length of fixing, be spaced in described frame data.
15. display drive methods as claimed in claim 13, wherein said vedio data also comprises a plurality of start signals, described start signal is between described frame data, in order to identify described frame data.
16. display drive methods as claimed in claim 15, wherein said display drive method utilizes acceptor circuit to receive described vedio data, and described display drive method also comprises:
In described battery saving mode, according to described start signal, acceptor circuit described in forbidden energy.
17. display drive methods as claimed in claim 13, also comprise:
Utilize gate driver circuit that sweep signal is provided, to drive described display panel; And
In described battery saving mode, in response to by the described partial frame data of shade, output control signal is carried out gate driver circuit described in forbidden energy.
18. display drive methods as claimed in claim 12, wherein said vedio data comprises a plurality of frame data, described in each, frame data comprise a plurality of line data, and in the step of the partial video view data in vedio data described in shade, shade is partial line data in frame data described in each.
19. display drive methods as claimed in claim 18, wherein said display drive method more drives described display panel according to horizontal-drive signal, in described battery saving mode, by the described partial line data of shade, in response to described horizontal-drive signal, with the sequential length of fixing, be spaced at described in each in frame data.
20. display drive methods as claimed in claim 19, wherein in a plurality of first frame data of described frame data, described partial line data by shade comprise the even number line data in described line data, in a plurality of second frame data of described frame data, described partial line data by shade comprise the odd number line data in described line data, and wherein said the first frame data and described the second frame data are sequentially spaced in sequential.
21. display drive methods as claimed in claim 18, wherein said vedio data also comprises a plurality of start signals, described start signal is between described frame data, in order to identify described frame data.
22. display drive methods as claimed in claim 18, also comprise:
In described battery saving mode, during described partial line data are by shade, utilize gate driver circuit that sweep signal is provided, to drive described display panel.
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| CN103971658B (en) | 2016-08-31 |
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