CN109584766A - A kind of display methods, display device and the device with store function - Google Patents
A kind of display methods, display device and the device with store function Download PDFInfo
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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
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Abstract
The invention discloses a kind of display methods, display device and with the device of store function.For the display methods for driving display device to show picture, which includes: the former frame picture and present frame picture for obtaining display device；Judge whether present frame picture and former frame picture are identical；If so, obtaining the display data of present frame picture, and present frame picture is shown according to display data.In this way, the power consumption of display device can be reduced, cruising ability is improved.
Description
Technical field
The present invention relates to field of display technology, more particularly to a kind of display methods, display device and have store function
Device.
Background technique
For display device when carrying out picture display, display screen can be according to the refreshing frequency of display device, and fixed acquisition is aobvious
Show signal, and display signal is output on the display unit of display device and is shown.
But the present inventor has found in long-term R&D work, in the prior art, display signal in addition to comprising
It also include transition signal except the display data of display, which can be used for identifying, and such as inform that display data pass
Defeated unlatching and mark, the transmission state mark etc. terminated, can be used for other control actions.But with the acquisition of display signal
The power of the increase of frequency, display device can obviously increase, and can reduce the cruising ability of display device.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of display methods, display device and with the dress of store function
It sets, to reduce the power consumption of display device, improves the cruising ability of display device.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of display methods is provided, for driving
Dynamic display device shows picture, and the display methods includes: the former frame picture and present frame picture for obtaining the display device；
Judge whether the present frame picture and the former frame picture are identical；If so, obtaining the display number of the present frame picture
According to, and the present frame picture is shown according to the display data.
Wherein, the display data for obtaining the present frame picture include: by showing described in the first MIPI signal acquisition
Registration evidence, the first MIPI signal include the display data.
Wherein, the display methods further comprises: if the present frame picture is different with the former frame picture, obtaining
The 2nd MIPI signal is taken, and shows that the present frame picture, the 2nd MIPI signal include according to the 2nd MIPI signal
Transit data and the display data.
Wherein, described pass through shows that data include: adjustment the 2nd MIPI signal described in the first MIPI signal acquisition, with
Obtain the first MIPI signal；Adjustment the 2nd MIPI signal includes: the described of deletion the 2nd MIPI signal
Transit data.
Wherein, the transit data includes HS-PREPARE, HS-ZERO, HS-SYNC, HS-TRAIL and HS-EXIT number
According to.
Wherein, the frequency f of the first MIPI signal meets following relationship:
F=F*H*V*BPP/ (LANES*2)；
Wherein, F is the frame frequency of the display device, and H is effective display width of the display device, and V is the display
Effective display height of device, BPP are that the RGB of the display device shows data width, and LANES is the first MIPI signal
Data transmission channel group number, data transmission channel described in every group include 2 data transmission channels.
Wherein, the LANES is 4.
In order to solve the above technical problems, another technical solution that the present invention uses is: providing a kind of display device.It is described
Display device includes: processor, is worked as obtaining the former frame picture and present frame picture of the display device, and described in judgement
Whether previous frame picture and the former frame picture are identical；If so, obtaining the display data of the present frame picture；Display screen,
For showing the present frame picture according to the display data.
Wherein, by showing data described in the first MIPI signal acquisition, the first MIPI signal includes the processor
The display data.
In order to solve the above technical problems, another technical solution used in the present invention is: providing a kind of with store function
Device.The shown device with store function is stored thereon with program data, which is characterized in that described program data are performed
Step in the Shi Shixian above method.
The beneficial effects of the present invention are: being different from the prior art, display methods of the embodiment of the present invention is for driving display dress
Display picture is set, which includes: the former frame picture and present frame picture for obtaining display device；Judge present frame picture
It is whether identical with former frame picture；If so, obtaining the display data of present frame picture, and present frame is shown according to display data
Picture.In this way, the transition in signal can will be shown when showing present frame picture identical with former frame picture
Data are deleted, and only obtain the display data of present frame picture, are shown present frame picture using the display data, be can reduce aobvious
Show the frequency acquisition of signal, therefore the power consumption of display device can be reduced, improves the cruising ability of display device.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the display device of that present invention first embodiment；
Fig. 2 is that the invention shows the flow diagrams of method first embodiment；
Fig. 3 is that the invention shows the flow diagrams of method second embodiment；
Fig. 4 A is the waveform diagram of the 2nd MIPI signal of Fig. 3 embodiment；
Fig. 4 B is the waveform diagram of the first MIPI signal of Fig. 3 embodiment；
Fig. 5 is the structural schematic diagram of the display device of that present invention second embodiment；
Fig. 6 is the structural schematic diagram for one embodiment of device that the present invention has store function.
Specific embodiment
As shown in Figure 1, with the continuous development of display technology, user is also higher and higher to the quality requirement of display picture,
To improve user experience, the refreshing frequency of display screen 103 is also being continuously increased, but with the increase of 103 refreshing frequency of display screen,
Mainboard 102 transmits the frequency of display data to display screen 103, and shows that the frequency acquisition of signal is also bigger, display device 101
Power consumption will also obviously increase.
To solve the above problems, the present invention proposes a kind of display methods, the power consumption of display device 101 can be reduced.It please join
Fig. 2 is read, Fig. 2 is that the invention shows the flow diagrams of method first embodiment.The present embodiment display methods is for driving display
Device 101 show picture, the present embodiment display methods specifically includes the following steps:
S201: the former frame picture and present frame picture of display device are obtained.
When display device 101 carries out the display of present frame picture, mainboard 102 obtains display device 101 and shows the present embodiment
The image information of the former frame picture and present frame picture that show；The image information can be former frame picture and present frame picture
Picture material is also possible to the display data information of former frame picture and present frame picture.
S202: judge whether present frame picture and former frame picture are identical, if so, entering step S203.
In the present embodiment, mainboard 102 judges whether are present frame picture and former frame picture according to the image information of acquisition
It is identical, if the picture material of the two or display data information are identical, it can be determined that present frame picture is identical with former frame picture.
Certainly, in other embodiments, the picture that similarity is more than certain threshold value can be equal to same frame, that is to say, that if
The picture material of present frame picture and former frame picture or the similarity for showing data information are more than certain threshold value, for example, 90% or
80% etc., so that it may determine that present frame picture is identical with former frame picture.
S203: the display data of present frame picture are obtained, and show present frame picture according to display data.
When two adjacent pictures are identical, transit data is not often needed between the display signal of the two and is identified, and
The display effect of present frame picture is not influenced, and therefore, which can be deleted, and the present embodiment display methods is in present frame
When picture is identical as former frame picture, the transition signal is deleted, the display data in display signal need to be only obtained, can reduce aobvious
Show the frequency acquisition of signal, that is, show the transmission frequency of signal, reduces the power consumption of display device 101.
It is different from the prior art, the present embodiment display methods is shown for driving display device to show picture by obtaining
The former frame picture and present frame picture of device 101；Judge whether present frame picture and former frame picture are identical；If so, obtaining
The display data of present frame picture are taken, and show present frame picture according to display data.In this way, can display with
It when the identical present frame picture of former frame picture, will show that the transit data in signal is deleted, and only obtain present frame picture
It shows data, shows present frame picture using the display data, can reduce the transmission frequency of display signal, therefore can reduce
The power consumption of display device 101 improves the cruising ability of display device 101.
The present invention further provides the display methods of second embodiment, the revealed display methods of the present embodiment is in above-mentioned reality
It applies and is described on the basis of the display methods of example.Referring to Fig. 3, Fig. 3 is that the invention shows the processes of method second embodiment
Schematic diagram.On the basis of above-described embodiment display methods, the present embodiment display methods is by first movement Industry Processor
Interface (Mobile Industry Processor Interface, MIPI) signal acquisition shows data, the first MIPI signal packet
The display data are included, and the present embodiment display methods further comprises following step on the basis of above-described embodiment display methods
It is rapid:
S301: if present frame picture is different with former frame picture, the 2nd MIPI signal is obtained, and believe according to the 2nd MIPI
Number display present frame picture, the 2nd MIPI signal include transit data and display data.
Wherein, the first MIPI signal of the present embodiment is by obtaining after the 2nd MIPI Signal Regulation.Specifically, lead to
The transition signal deleted in the 2nd MIPI signal is crossed, and obtains the first MIPI signal for only remaining with display data.
In the present embodiment, mainboard 102 is obtained when present frame picture is identical with former frame picture by the first MIPI signal
Display data are taken, the first MIPI signal only includes display data, and shows present frame picture according to display data, and in present frame
When picture and former frame picture difference, show that present frame picture, the 2nd MIPI signal not only include by the 2nd MIPI signal
It shows data, further includes transit data.In this way, it can not only guarantee the display of the display picture of display device 101
Effect, moreover it is possible to reduce the transmission frequency of MIPI signal, reduce the signal transmission power of display device 101.
Specifically, MIPI is field of display technology, a kind of Data Transport Protocol of transmitting display data, the support of MIPI agreement
Two kinds of operating modes, i.e. Command mode and Video mode.Wherein, only when display screen 103 has display controller and frame
Command mode could be used when buffer area.The format of its data transmission is usually in pixel data followed by order ginseng
Number and order.Mainboard 102 can read and write the register of display controller and the content of frame buffer zone.Each frame data start to transmit
Time can be controlled by frame synchronizing signal TE (being exported by display screen), other external pins can be used also to control,
Information is triggered such as TE line or directly by the TE that MIPI interface transmits.But to reduce the cost of display device 101, display screen 103
Usually using the driving chip without RAM, i.e. Video mode, synchronizing information, control signal and the RGB data of signal are shown
It is to be transmitted in the form of MIPI message, because display screen 103 is without the driving chip of RAM, needs the mainboard of display device 101
102 it is continual to display screen 103 by MIPI signal transmitting display data, therefore, this mode compares Command mode
Power consumption is bigger.In traditional Video mode, MIPI signal is usually therefore fixed frequency, such as 4Mbps, 820Mbps are shown
The power of showing device 101 cannot be reduced.The present embodiment display methods can reduce aobvious by reducing MIPI signal transmission frequencies
The power consumption of showing device 101.
Please refer to the waveform diagram that Fig. 4 A and Fig. 4 B, Fig. 4 A are the 2nd MIPI signals of Fig. 3 embodiment；Fig. 4 B is that Fig. 3 is implemented
The waveform diagram of first MIPI signal of example.HS state is the high velocity, low pressure differential signal of the 2nd MIPI, transmits high speed sequential serial
Data；LP state is the low speed power down signal of the 2nd MIPI, transmission of control signals and status signal, LP state include LP-00,
LP-01, LP-10 and LP-11.From the display data (oblique line fill part) that can be seen that in Fig. 4 A in the 2nd MIPI signal
Cycle TCThe 2nd MIPI signal period of part is only accounted in fact, and is located at the cycle T of the First Transition data before display dataAAnd
The T of the second transit data after display dataBAccount for the 2nd MIPI signal period of other parts, that is to say, that passing
When defeated 2nd MIPI signal, portion of time transmitting display data has only been used, and the remaining time is used for transmission First Transition letter
Number and the second transition signal.
Specifically, First Transition data include HS-PREPARE, HS-ZERO and HS-SYNC, wherein HS-PREPARE is used
In the LP00 of driving LP state；HS-ZERO is for emptying MIPI transmission channel data；HS-SYNC data are a kind of frame head or frame
Tail tag is known, next for valid data for informing；Second transit data includes HS-TRAIL and HS-EXIT, wherein HS-
TRAIL be used to drive the last position of valid data different conditions reversion, HS-EXIT is used to inform that the transmission of current frame number is tied
Beam.
The present embodiment display methods is by deleting First Transition data HS-PREPARE, HS-ZERO, HS-SYNC and the
Two transit data HS-TRAIL, HS-EXIT reduce the frequency of the 2nd MIPI signal, the first MIPI signal are obtained, such as Fig. 4 B institute
Show, to reduce the power consumption of display device 101.The frequency f of the first MIPI signal of the present embodiment meets following relationship: f=F*H*
V*BPP/(LANES*2)；Wherein, F is the frame frequency of display device 101, and H is effective display width of display device 101, and V is aobvious
Effective display height of showing device 101, BPP are that the RGB of display device 101 shows data width, and generally 24, LANES is
The data transmission channel group number of MIPI signal, every group of data transmission channel include 2 data transmission channels.
Optionally, the LANES of the present embodiment is 4.Certainly, it can also be other quantity in other embodiments, such as 2,8
Deng.
For example, the resolution ratio of EK79023 display screen is 600x 1024, frame frequency 57HZ, a frame figure under 7731 platform of spreadtrum
The data volume H*V*BPP=600*1024*24=14745600bit of picture, one second data volume are as follows: 14745600*57=
840.499200Mbps, required MIPI transmission frequency f=840.499200/ (LANES*2)=105.0624Mhz.
It in other embodiments, can be according to specific requirement, selective deletion First Transition signal or the second transition letter
Number or the second transition signal of part First Transition signal or part, can reduce the frequency of the 2nd MIPI signal.
The first MIPI signal of the present embodiment and the 2nd MIPI signal not only include multichannel data signal, further include clock letter
Number CLK+ and CLK-.
The present invention proposes a kind of display device, as shown in Figure 1, Fig. 1 is the structure of the display device of that present invention first embodiment
Schematic diagram.The present embodiment display device 101 includes mainboard 102 and display screen 103.Mainboard 102 is for before obtaining display device
One frame picture and present frame picture, and judge whether present frame picture and former frame picture are identical；It is drawn if so, obtaining present frame
The display data in face, display screen 103 are used to show present frame picture according to display data.
In the present embodiment, the image information of the present embodiment can be in the image of former frame picture and present frame picture
Hold, is also possible to the display data information of former frame picture and present frame picture.Mainboard 103 judges according to the image information of acquisition
Whether present frame picture is identical as former frame picture, if the picture material of the two or display data information are identical, can be determined that
Present frame picture is identical with former frame picture.It certainly, in other embodiments, can also be more than the picture of certain threshold value by similarity
Face is equal to same frame.
When two adjacent pictures are identical, transit data is not often needed between the display signal of the two, it is current without influencing
The display effect of frame picture, therefore, the transit data can be deleted.The present embodiment display methods present frame picture with it is previous
When frame picture is identical, the transition signal is deleted, the display data in display signal need to be only obtained, can reduce the biography of display signal
Defeated frequency reduces the power consumption of display device 101.
It is different from the prior art, the mainboard 102 of the present embodiment can be drawn showing present frame identical with former frame picture
It when face, will show that the transit data in signal is deleted, and only obtain the display data of present frame picture, display screen 103 utilizes should
It shows that data show present frame picture, can reduce the transmission frequency of display signal, therefore the function of display device 101 can be reduced
Consumption improves the cruising ability of display device 101.
Specifically, the mainboard 102 of the present embodiment is believed when present frame picture is identical with former frame picture by the first MIPI
Number display data are obtained, the first MIPI signal only includes display data, and shows present frame picture according to display data, and is working as
When previous frame picture and former frame picture difference, present frame picture is shown by the 2nd MIPI signal, the 2nd MIPI signal is not only
It further include transit data including showing data.In this way, it can not only guarantee the display picture of display device 101
Display effect, moreover it is possible to reduce the frequency of MIPI signal, reduce the power of display device 101.In addition, the mainboard 102 of the present embodiment
It can use frame synchronizing signal TE and carry out control selections by the first MIPI signal or by the 2nd MIPI signal display present frame picture
Face.For example, mainboard 102 shows signal by the first MIPI signal acquisition when TE is high level, when TE is low level, by the
Two MIPI signals show present frame.Certainly, in other embodiments, signal can also be controlled by others to replace frame synchronization
Signal TE.
Specifically, as shown in Figure 4 A, First Transition data include HS-PREPARE, HS-ZERO and HS-SYNC, wherein
HS-PREPARE is used to drive the LP00 of LP state；HS-ZERO is for emptying MIPI transmission channel data；HS-SYNC data are
A kind of frame head or postamble mark, it is next for valid data for informing；Second transit data includes HS-TRAIL and HS-
EXIT, wherein HS-TRAIL be used to drive the last position of valid data different conditions reversion, HS-EXIT works as informing
The preceding frame number end of transmission.
The present embodiment display methods is by deleting First Transition data HS-PREPARE, HS-ZERO, HS-SYNC and the
Two transit data HS-TRAIL, HS-EXIT reduce the frequency of the 2nd MIPI signal, the first MIPI signal are obtained, such as Fig. 4 B institute
Show, to improve the data transmission power consumption of display device 101.The frequency f of the first MIPI signal of the present embodiment meets following relationship:
F=F*H*V*BPP/ (LANES*2)；Wherein, F is the frame frequency of display device 101, and H is that effective display of display device 101 is wide
Degree, V be display device 101 effective display height, BPP for display device 101 RGB display data width, generally 24,
LANES is the data transmission channel group number of MIPI signal, and every group of data transmission channel includes 2 data transmission channels.
Optionally, the LANES of the present embodiment is 4.Certainly, it can also be other quantity in other embodiments, such as 2,8
Deng.
The present invention further provides the display device of second embodiment, the revealed display device of the present embodiment is in above-mentioned reality
It applies and is described on the basis of the display device of example.Referring to Fig. 5, Fig. 5 is the structure of the display device of that present invention second embodiment
Schematic diagram.The present embodiment display device 501 includes processor 502, display screen 503, memory 504 and imaging sensor 505.
It, can be by imaging sensor 505 to former frame picture and current when according to picture material as judgment basis
Frame picture is acquired, such as high-definition camera etc., and picture material is then transferred to processor 502 and is handled.According to
Data information is shown as judgment basis, processor 502 is obtained directly from memory 504 to display data information.
It is different from the prior art, the processor 502 of the present embodiment can show present frame identical with former frame picture
It when picture, will show that the transit data in signal is deleted, and only obtain the display data of present frame picture, display screen 503 utilizes
The display data show present frame picture, can reduce the frequency acquisition of display signal, therefore can reduce display device 501
Power consumption improves the cruising ability of display device 501.
The present invention also proposes a kind of device with store function, as shown in fig. 6, the present embodiment has the dress of store function
It sets and is stored with program data 602, the first MIPI signal 604 and the 2nd MIPI signal 605 on 601, program data 602 is performed
Display of the Shi Shixian to the display data of the first MIPI signal 604 or the 2nd MIPI signal 605, has existed about the display methods
Detailed narration has been carried out in above method embodiment, has not been repeated here.
There is the present embodiment the device 601 of store function can be, but not limited to, USB flash disk, SD card, PD CD-ROM drive, movement firmly
Disk, large capacity floppy drive, flash memory, multimedia memory card etc..
It is different from the prior art, the embodiment of the present invention can reduce the frequency acquisition of display signal, therefore can reduce aobvious
The power consumption of showing device improves the cruising ability of display device.
Mode the above is only the implementation of the present invention is not intended to limit the scope of the invention, all to utilize this
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, it is relevant to be applied directly or indirectly in other
Technical field is included within the scope of the present invention.
Claims (10)
1. a kind of display methods, which is characterized in that for driving display device to show picture, the display methods includes:
Obtain the former frame picture and present frame picture of the display device；
Judge whether the present frame picture and the former frame picture are identical；
If so, obtaining the display data of the present frame picture, and the present frame picture is shown according to the display data.
2. display methods according to claim 1, which is characterized in that the display data for obtaining the present frame picture
Include:
By showing data described in the first MIPI signal acquisition, the first MIPI signal includes the display data.
3. display methods according to claim 2, which is characterized in that the display methods further comprises:
If the present frame picture is different with the former frame picture, the 2nd MIPI signal is obtained, and according to described second
MIPI signal shows that the present frame picture, the 2nd MIPI signal include transit data and the display data.
4. display methods according to claim 3, which is characterized in that described to pass through display described in the first MIPI signal acquisition
Data include:
The 2nd MIPI signal is adjusted, to obtain the first MIPI signal；
The adjustment the 2nd MIPI signal includes:
Delete the transit data of the 2nd MIPI signal.
5. display methods according to claim 4, which is characterized in that the transit data includes HS-PREPARE, HS-
ZERO, HS-SYNC, HS-TRAIL and HS-EXIT data.
6. display methods according to claim 2, which is characterized in that the frequency f of the first MIPI signal meets following
Relationship:
F=F*H*V*BPP/ (LANES*2)；
Wherein, F is the frame frequency of the display device, and H is effective display width of the display device, and V is the display device
Effective display height, BPP be the display device RGB show data width, LANES be the first MIPI signal number
According to transmission channel group number, data transmission channel described in every group includes 2 data transmission channels.
7. display methods according to claim 6, which is characterized in that the LANES is 4.
8. a kind of display device, which is characterized in that the display device includes:
Processor for obtaining the former frame picture and present frame picture of the display device, and judges the present frame picture
It is whether identical with the former frame picture；If so, obtaining the display data of the present frame picture；
Display screen, for showing the present frame picture according to the display data.
9. display device according to claim 8, which is characterized in that the processor passes through the first MIPI signal acquisition institute
Display data are stated, the first MIPI signal includes the display data.
10. a kind of device with store function, which is characterized in that be stored thereon with program data, which is characterized in that the journey
Ordinal number is according to the step being performed in any one of realization claim 1-7 the method.
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| CN111402785A (en) * | 2020-03-12 | 2020-07-10 | 王永东 | Anti-interference video display method and device for L ED display screen and storage medium |
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