CN104332131A - Driving method for display device, display screen updating method and device - Google Patents
Driving method for display device, display screen updating method and device Download PDFInfo
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- CN104332131A CN104332131A CN201410678068.5A CN201410678068A CN104332131A CN 104332131 A CN104332131 A CN 104332131A CN 201410678068 A CN201410678068 A CN 201410678068A CN 104332131 A CN104332131 A CN 104332131A
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Abstract
The invention provides a driving method for a display device, a display screen updating method and a display screen updating device. The driving method comprises steps of comparing a frame of display data currently to be transmitted to the display device with a last frame of display data transmitted to the display device, so as to determine the position of a pixel needing to be updated; transmitting the updated pixel data corresponding to the pixel to be updated and the updated pixel position information for expressing the position of the pixel to be updated to the display device, and not transmitting the pixel data corresponding to the pixel not be updated. Compared with a way of transmitting all pixel data to the display device in the prior art, the consumption on transmission resources can be reduced greatly.
Description
Technical field
The present invention relates to display technique field, especially relate to a kind of driving method for display device, display frame update method and device.
Background technology
The ultimate principle of picture display is still frame to be one by one input to continuously on display, and in extremely rapid succession display frame just can define the illusion of motion.High frame per second can obtain animation more smooth, more true to nature.Frame number p.s. (fps), the more shown action will be more smooth.Along with the requirement of the smooth degree to picture is more and more higher, in the unit interval, need the view data transmitted also to get more and more, cause the resource consumed in procedure for displaying to get more and more.
Summary of the invention
The object of the invention is the transmission quantity reducing view data in procedure for displaying.
In order to achieve the above object, the invention provides a kind of driving method for display device, comprising:
Show data to the current frame display data needing to be sent to display device with the previous frame being sent to display device to compare, determine the position of the pixel needing renewal;
Pixel data after renewal corresponding to the pixel needing to upgrade and the renewal picture element position information that is used for the position representing the pixel that needs upgrade are sent to display device, and the pixel data corresponding to pixel that renewal does not occur does not send.
Further, described pixel data after renewal corresponding to the pixel needing to upgrade and the renewal picture element position information that is used for the position representing the pixel that needs upgrade are sent to display device, comprise:
For each pixel needing to upgrade, generate the more new logo that has the first numerical value, for each pixel not needing to upgrade, generate the more new logo that has second value; By more new logo corresponding for each pixel sequentially arrangement formation renewal picture element position information, and the pixel data inserted after each needs more new logo corresponding to the pixel of renewal after the renewal corresponding to this pixel is sent to display device.
Further, described determine need upgrade pixel position after, before pixel data after renewal corresponding to the pixel needing to upgrade and the renewal picture element position information that is used for the position representing the pixel that needs upgrade are sent to display device, described method also comprises:
Judge to need the number of the pixel upgraded whether to be greater than the first preset value;
When judging to need the number of pixel upgraded to be greater than the first preset value, then the described display device that pixel data after renewal corresponding to the pixel needing to upgrade and the renewal picture element position information that is used for the position representing the pixel that needs upgrade is sent to replaces with and currently needs the frame being sent to display device to show data to be sent to display device by described.
A kind of display frame update method, comprising:
Receive present frame and need the pixel data after the renewal corresponding to pixel upgraded and the renewal picture element position information for the position that represents the pixel that needs upgrade relative to next frame;
The pixel upgraded is needed accordingly according to described renewal picture element position information determination present frame;
The replacement of the pixel data after described renewal corresponding to described renewal picture element position information present frame is used to need the pixel data upgraded accordingly.
Further, the described pixel determining to need to upgrade according to described renewal picture element position information, comprising:
If described renewal picture element position information is by the arrangement of more new logo corresponding for each pixel order being formed, then read the more new logo that each pixel is corresponding, when renewal is designated the first numerical value, then determine that this pixel needs to upgrade, when renewal is designated second value, then determine that this pixel does not need to upgrade;
Use the replacement of the pixel data after described renewal corresponding to described renewal picture element position information present frame to need the pixel upgraded accordingly, comprising:
When renewal is designated the first numerical value, then need the pixel data upgraded accordingly with the pixel data replacement present frame after the renewal followed closely after this more new logo.
For a drive unit for display device, comprising:
Comparison module, for when needs carry out frame updating, the display data that the frame display data needing to be sent to display device to current and previous frame are sent to display device compare, and determine the position needing the pixel upgraded;
Sending module, for the pixel data after the renewal corresponding to the pixel needing to upgrade and the renewal picture element position information that is used for the position representing the pixel that needs upgrade are sent to display device, the pixel data corresponding to pixel that renewal does not occur does not send.
Further, described sending module, specifically for for each pixel needing to upgrade, generates the more new logo that has the first numerical value, for each pixel not needing to upgrade, generates the more new logo that has second value; By more new logo corresponding for each pixel sequentially arrangement formation renewal picture element position information, and the pixel data inserted after each needs more new logo corresponding to the pixel of renewal after the renewal corresponding to this pixel is sent to display device.
Further, also comprise:
Judge module, needs the number of the pixel upgraded whether to be greater than the first preset value for judging;
Described sending module, when judge module judges to need the number of the pixel upgraded to be greater than the first preset value, replaces with for the described current frame display data being sent to display device that need are sent to display device.
A kind of display device, comprising:
Receiver module, for receiving the pixel data after the renewal corresponding to pixel that present frame to need relative to next frame to upgrade and the renewal picture element position information for the position that represents the pixel that needs upgrade;
Determination module, for needing the pixel upgraded accordingly according to described renewal picture element position information determination present frame;
Update module, replaces for the pixel data after using described renewal corresponding to described renewal picture element position information the pixel data that present frame needs to upgrade accordingly.
Further, if when described determination module is specifically for being by the arrangement of more new logo corresponding for each pixel order being formed at described renewal picture element position information, read the more new logo that each pixel is corresponding, when renewal is designated the first numerical value, then determine that this pixel needs to upgrade, when renewal is designated second value, then determine that this pixel does not need to upgrade;
Described update module specifically for when renewal is designated the first numerical value, then needs the pixel data upgraded accordingly with the pixel data replacement present frame after the renewal followed closely after this more new logo.
A kind of display device, comprises the display device described in above-mentioned any one, and the drive unit for display device described in above-mentioned any one.
In the present invention, when needs carry out frame updating, only the pixel data after the renewal corresponding to the pixel needing to upgrade and the renewal picture element position information that is used for the position representing the pixel that needs upgrade are sent to display device, compared to the mode in prior art, all pixel datas being transferred to display device, the consumption to transfer resource significantly can be reduced.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of a kind of driving method for display device provided by the invention;
Fig. 2 is the schematic flow sheet of a kind of display frame update method provided by the invention
Fig. 3 a and Fig. 3 b is once the schematic diagram before and after possible frame updating;
Fig. 4 a is the schematic diagram of the bit sequence of the pixel data that before upgrading, each pixel is corresponding;
Fig. 4 b is the schematic diagram of the bit sequence of the pixel data that after upgrading, each pixel is corresponding;
Fig. 5 is the schematic diagram adopting the driving method for display device provided by the invention to need the bit sequence of the prime number certificate of transmission;
Fig. 6 is the structural representation of a kind of drive unit for display device provided by the invention;
Fig. 7 is the structural representation of a kind of display device provided by the invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
The invention provides a kind of driving method for display device, as shown in Figure 1, the method comprises:
Step S11, the display data that the frame display data needing to be sent to display device to current and previous frame are sent to display device compare, and determine the position needing the pixel upgraded;
Step S12, the pixel data after the renewal corresponding to the pixel needing to upgrade and the renewal picture element position information that is used for the position representing the pixel that needs upgrade are sent to display device, and the pixel data corresponding to pixel that renewal does not occur does not send.
Accordingly, present invention also offers a kind of display frame update method, the method can be performed by display device, and as shown in Figure 1, the method comprises:
Step S21, receiving present frame needs the pixel data after the renewal corresponding to pixel upgraded and the renewal picture element position information for the position that represents the pixel that needs upgrade relative to next frame;
Step S22, needs the pixel upgraded accordingly according to described renewal picture element position information determination present frame;
Step S23, uses the replacement of the pixel data after described renewal corresponding to described renewal picture element position information present frame to need the pixel data upgraded accordingly.
In the embodiment of the present invention, when carrying out frame updating, only by the pixel data after the renewal corresponding to the pixel needing in picture to upgrade and be used for representing that the renewal picture element position information of position of the pixel that needs upgrade is sent to display device; Owing to generally all can not upgrade pixels all in picture when carrying out frame updating, and upgrading picture element position information generally much smaller than this pixel data, menu renewal method provided by the invention can reduce the data volume produced in frame updating process greatly.
Preferably, before step S11, described method also comprises:
Step S01, judges to need the number of the pixel upgraded whether to be greater than the first preset value;
Now step S11 can be specially: when judging to need the number of pixel upgraded to be not more than the first preset value, and the pixel data after the renewal corresponding to the pixel needing to upgrade and the renewal picture element position information that is used for the position representing the pixel that needs upgrade are sent to display device.
When the judged result in step S01 is for being, then the direct pixel data of data namely corresponding to all pixels of this frame that shown by next frame is sent to display device, and does not send renewal picture element position information.
Here the first preset value, its concrete value does not affect protection scope of the present invention.
In actual applications, if need the pixel of renewal too much relative to the picture of previous frame, such as in extreme circumstances, entirely red screen change is complete blue screen, now needs all to upgrade all pixels in picture.If if now the pixel data after the renewal corresponding to the pixel needing to upgrade and the renewal picture element position information that is used for the position representing the pixel that needs upgrade are sent to display device, the whole pixel data of transmission is then not only needed also to need transmission to upgrade picture element position information, when monitor resolution is very high, the transmission upgrading picture element position information also can take a large amount of resources, causes the increase of image data transmission amount so on the contrary.On this basis, in the preferred embodiment of the invention, only when judging that the number of the pixel upgraded is not more than the first preset value, pixel data after renewal corresponding to the pixel needing to upgrade and the renewal picture element position information that is used for the position representing the pixel that needs upgrade are sent to display device, the transmission quantity of data can be reduced further.
Concrete, step S12 can be specially: for each pixel needing to upgrade, generate the more new logo that has the first numerical value, for each pixel not needing to upgrade, generates the more new logo that has second value; By more new logo corresponding for each pixel sequentially arrangement formation renewal picture element position information, and the pixel data inserted after each needs more new logo corresponding to the pixel of renewal after the renewal corresponding to this pixel is sent to display device.
Accordingly, now step S22 is specially: the more new logo corresponding according to each pixel determines that this pixel is the need of renewal, if described renewal picture element position information is by the arrangement of more new logo corresponding for each pixel order being formed, then read the more new logo that each pixel is corresponding, when renewal is designated the first numerical value, then determine that this pixel needs to upgrade, when renewal is designated second value, then determine that this pixel does not need to upgrade;
Accordingly, step S23 comprises: when renewal is designated the first numerical value, then need the pixel data upgraded accordingly with the pixel data replacement present frame after the renewal followed closely after this more new logo
In a particular application, a bit can be adopted as a more new logo, if a pixel needs to upgrade, generating a value for this pixel is the bit of 1, if a pixel does not need to upgrade, can generate a value for this pixel is the bit of 0, display device is after receiving corresponding more new logo, value according to more new logo corresponding to pixel determines that this pixel is the need of renewal, if, then read the bit (such as 24 bits) of corresponding figure place, and use the bit read to upgrade this pixel, if do not needed, then directly skip.
Preferred embodiment be described in detail provided by the invention below in conjunction with concrete scene, as shown in Figure 3 a and Figure 3 b shows, for the schematic diagram before and after once possible frame updating (before renewal as shown in Figure 3 a, after renewal as shown in Figure 3 b), need the redness in region corresponding to pixel S3, S4 for being updated to white, white in the region that S5 is corresponding is updated to redness, does not need to upgrade with other the pixel S1 (in vain) in one-row pixels, S2 (red), S6 (in vain).Before upgrading, the bit sequence of the pixel data that each pixel is corresponding as shown in fig. 4 a, after upgrading, the bit sequence of the pixel data that each pixel is corresponding as shown in Figure 4 b, the bit value of the green correspondence in pixel S3 and S4, S5 and the bit value of blueness correspondence is needed all to be set to 1, keep red corresponding bit value to be 1 simultaneously, thus S3, S4 and S5 are mixed into white.Now, the form of the data that the present invention adopts the method for renewal picture provided by the invention to transmit can be as shown in Figure 5, (renewal corresponding to the pixel of renewal is needed to be designated 1 the more new logo of S1, S2, S3 successively, renewal corresponding to the pixel of renewal is not needed to be designated 0), pixel data after S3 upgrades, the more new logo of S4, the renewal mark that pixel data S5, S6 after S4 upgrades are corresponding rearranges the view data needing transmission.Then for display device, after reading first bit 0, judge that S1 does not need to upgrade, then continue reading second bit 0, judge that S2 does not need to upgrade, continue reading the 3rd bit 1, now judge that S3 needs to upgrade, because pixel data takies 24 bits, then intercept 24 bits backward as the pixel data after S3 renewal, read the more new logo of a bit as S4 afterwards, the renewal corresponding due to S4 is designated 1, then continue intercepting 24 bits as the pixel data after S4 renewal, read the more new logo of a bit as S5 afterwards, the renewal corresponding due to S5 is designated 1, then continue intercepting 24 bits as the pixel data after S5 renewal, read the more new logo of a bit as S6 afterwards, judge that S6 does not need to upgrade.Comparison diagram 4b and Fig. 5 can find out, the present invention is transferred to display device relative to by all pixel datas in Fig. 4 a, can reduce the transmission of 60 bits, greatly reduces the data volume needing transmission.It is to be noted, that pixel pure white for part is updated to pure red sub-pixel although above-mentioned, pure for part red sub-pixel is updated to the explanation that pure white sub-pixel carries out, but in actual applications, the occurrence of pixel data does not affect enforcement of the present invention.As long as identify the pixel occurring to upgrade, and occur the pixel data after upgrading to display unit to cover the original pixel data of this pixel, can reach identical effect, corresponding scheme also all should fall into protection scope of the present invention.
Based on identical design, present invention also offers a kind of drive unit for display device, can be used for the method performed as shown in Figure 1, as shown in Figure 6, comprising:
Comparison module 601, for when needs carry out frame updating, the display data that the frame display data needing to be sent to display device to current and previous frame are sent to display device compare, and determine the position needing the pixel upgraded;
Sending module 602, for the pixel data after the renewal corresponding to the pixel needing to upgrade and the renewal picture element position information that is used for the position representing the pixel that needs upgrade are sent to display device, the pixel data corresponding to pixel that renewal does not occur does not send.
Concrete, sending module 602, specifically for for each pixel needing to upgrade, generates the more new logo that has the first numerical value, for each pixel not needing to upgrade, generates the more new logo that has second value; By more new logo corresponding for each pixel sequentially arrangement formation renewal picture element position information, and the pixel data inserted after each needs more new logo corresponding to the pixel of renewal after the renewal corresponding to this pixel is sent to display device.
As preferably, drive unit also can comprise judge module, needs the number of the pixel upgraded whether to be greater than the first preset value for judging;
When described sending module is specifically for judging at judge module to need the number of the pixel upgraded to be greater than the first preset value, the described current frame display data being sent to display device that need are sent to display device; If be less than or equal to first threshold, then still for the pixel data after the renewal corresponding to the pixel needing to upgrade and the renewal picture element position information that is used for the position representing the pixel that needs upgrade are sent to display device.In practice, judge module should between comparison module and sending module.
Present invention also offers a kind of display device, can be used for the method performed as shown in Figure 2, as shown in Figure 7, comprising:
Receiver module 701, for receiving the pixel data after the renewal corresponding to pixel that present frame to need relative to next frame to upgrade and the renewal picture element position information for the position that represents the pixel that needs upgrade;
Determination module 702, for needing the pixel upgraded accordingly according to described renewal picture element position information determination present frame;
Update module 703, replaces for the pixel data after using described renewal corresponding to described renewal picture element position information the pixel data that present frame needs to upgrade accordingly.
Concrete, if when determination module 702 is specifically for being by the arrangement of more new logo corresponding for each pixel order being formed at described renewal picture element position information, read the more new logo that each pixel is corresponding, when renewal is designated the first numerical value, then determine that this pixel needs to upgrade, when renewal is designated second value, then determine that this pixel does not need to upgrade;
Update module 703 replaces for the pixel data after using described renewal corresponding to described renewal picture element position information the pixel data that present frame needs to upgrade accordingly.
Present invention also offers a kind of display device, this display device comprises display device as shown in Figure 7, the drive unit for display device as shown in Figure 6.Display device can be various equipment for realizing Presentation Function or equipment combination, and wherein drive unit is for generating the display data for showing, and the display data that display device is used for transmitting according to drive unit complete display.
It will be appreciated by persons skilled in the art that method and apparatus provided by the invention can use software, hardware, firmware or their combination to realize, these all belong to the scope of protection of the invention.Separately, in the present invention, the picture that the next frame needs that drive unit is current needs the frame display data being sent to display device to correspond to display device show, the display data that drive unit previous frame is sent to display device are equivalent to the present frame picture that display device shows.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (11)
1. for a driving method for display device, it is characterized in that, comprising:
Show data to the current frame display data needing to be sent to display device with the previous frame being sent to display device to compare, determine the position of the pixel needing renewal;
Pixel data after renewal corresponding to the pixel needing to upgrade and the renewal picture element position information that is used for the position representing the pixel that needs upgrade are sent to display device, and the pixel data corresponding to pixel that renewal does not occur does not send.
2. the method for claim 1, is characterized in that, described pixel data after renewal corresponding to the pixel needing to upgrade and the renewal picture element position information that is used for the position representing the pixel that needs upgrade is sent to display device, comprising:
For each pixel needing to upgrade, generate the more new logo that has the first numerical value, for each pixel not needing to upgrade, generate the more new logo that has second value; By more new logo corresponding for each pixel sequentially arrangement formation renewal picture element position information, and the pixel data inserted after each needs more new logo corresponding to the pixel of renewal after the renewal corresponding to this pixel is sent to display device.
3. method as claimed in claim 1 or 2, it is characterized in that, described determine need upgrade pixel position after, before pixel data after renewal corresponding to the pixel needing to upgrade and the renewal picture element position information that is used for the position representing the pixel that needs upgrade are sent to display device, described method also comprises:
Judge to need the number of the pixel upgraded whether to be greater than the first preset value;
When judging to need the number of pixel upgraded to be greater than the first preset value, then the described display device that pixel data after renewal corresponding to the pixel needing to upgrade and the renewal picture element position information that is used for the position representing the pixel that needs upgrade is sent to replaces with and currently needs the frame being sent to display device to show data to be sent to display device by described.
4. a display frame update method, is characterized in that, comprising:
Receive present frame and need the pixel data after the renewal corresponding to pixel upgraded and the renewal picture element position information for the position that represents the pixel that needs upgrade relative to next frame;
The pixel upgraded is needed accordingly according to described renewal picture element position information determination present frame;
The replacement of the pixel data after described renewal corresponding to described renewal picture element position information present frame is used to need the pixel data upgraded accordingly.
5. method as claimed in claim 3, is characterized in that, the described pixel determining to need to upgrade according to described renewal picture element position information, comprising:
If described renewal picture element position information is by the arrangement of more new logo corresponding for each pixel order being formed, then read the more new logo that each pixel is corresponding, when renewal is designated the first numerical value, then determine that this pixel needs to upgrade, when renewal is designated second value, then determine that this pixel does not need to upgrade;
Use the replacement of the pixel data after described renewal corresponding to described renewal picture element position information present frame to need the pixel upgraded accordingly, comprising:
When renewal is designated the first numerical value, then need the pixel data upgraded accordingly with the pixel data replacement present frame after the renewal followed closely after this more new logo.
6. for a drive unit for display device, it is characterized in that, comprising:
Comparison module, for when needs carry out frame updating, the display data that the frame display data needing to be sent to display device to current and previous frame are sent to display device compare, and determine the position needing the pixel upgraded;
Sending module, for the pixel data after the renewal corresponding to the pixel needing to upgrade and the renewal picture element position information that is used for the position representing the pixel that needs upgrade are sent to display device, the pixel data corresponding to pixel that renewal does not occur does not send.
7. drive unit as claimed in claim 6, it is characterized in that, described sending module, specifically for for each pixel needing to upgrade, generates the more new logo that has the first numerical value, for each pixel not needing to upgrade, generate the more new logo that has second value; By more new logo corresponding for each pixel sequentially arrangement formation renewal picture element position information, and the pixel data inserted after each needs more new logo corresponding to the pixel of renewal after the renewal corresponding to this pixel is sent to display device.
8. drive unit as claimed in claims 6 or 7, is characterized in that, also comprise:
Judge module, needs the number of the pixel upgraded whether to be greater than the first preset value for judging;
Described sending module, when judge module judges to need the number of the pixel upgraded to be greater than the first preset value, replaces with for the described current frame display data being sent to display device that need are sent to display device.
9. a display device, is characterized in that, comprising:
Receiver module, for receiving the pixel data after the renewal corresponding to pixel that present frame to need relative to next frame to upgrade and the renewal picture element position information for the position that represents the pixel that needs upgrade;
Determination module, for needing the pixel upgraded accordingly according to described renewal picture element position information determination present frame;
Update module, replaces for the pixel data after using described renewal corresponding to described renewal picture element position information the pixel data that present frame needs to upgrade accordingly.
10. updating device as claimed in claim 9, it is characterized in that, if when described determination module is specifically for being by the arrangement of more new logo corresponding for each pixel order being formed at described renewal picture element position information, read the more new logo that each pixel is corresponding, when renewal is designated the first numerical value, then determine that this pixel needs to upgrade, when renewal is designated second value, then determine that this pixel does not need to upgrade;
Described update module specifically for when renewal is designated the first numerical value, then needs the pixel data upgraded accordingly with the pixel data replacement present frame after the renewal followed closely after this more new logo.
11. 1 kinds of display devices, is characterized in that, comprise the display device as described in claim 9 or 10, and the drive unit for display device as described in any one of claim 6-8.
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Application publication date: 20150204 |