CN109346000A - LED display control method, system and electronic equipment - Google Patents
LED display control method, system and electronic equipment Download PDFInfo
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- CN109346000A CN109346000A CN201811142087.0A CN201811142087A CN109346000A CN 109346000 A CN109346000 A CN 109346000A CN 201811142087 A CN201811142087 A CN 201811142087A CN 109346000 A CN109346000 A CN 109346000A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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Abstract
The present invention relates to field of display technology, a kind of LED display control method, system and electronic equipment are disclosed, wherein method includes: the gross energy for obtaining each channel LED within a display cycle；It obtains in the same display cycle, the energy of each channel LED loss；The energy that each channel LED loses is compared with each channel LED gross energy, obtains comparison result；According to the comparison result, the display time of the LED of corresponding channel is adjusted.LED gross energy when loss is not generated in each channel that the present embodiment is got by comparing the energy lost of LED in each channel and in advance, and then the display time of the LED of corresponding channel is adjusted according to comparison result, help to make up the loss of brightness, improves the consistency that LED is shown.
Description
Technical field
The present invention relates to field of display technology, and in particular to a kind of LED display control method, system and electronic equipment.
Background technique
Contrast refer to light and shade region in piece image it is most bright it is white and most dark it is black between different brightness levels survey
Amount, the i.e. size of piece image gray scale contrast.Current LED display usually all has high comparison to enhance display effect
The characteristic of degree.Fig. 1 shows common anode LED and shows basic circuit, and Fig. 2 shows high contrast timing corresponding to circuit in Fig. 1
Figure.Within a display cycle, when the LED being highlighted lights starting time and lights starting point earlier than the LED that low-light level is shown
Between, high contrast is presented in the LED display being achieved in the driving of a piece of driving chip.
In high contrast situations, the output channel of driving chip corresponding to the LED formerly lighted has electric current to flow through, warp
Overdrive pipe electric current be electric current in above-mentioned each output channel summation, due to driving tube have certain internal resistance, driving tube
Partial pressures can be occupied, the electric current for flowing through driving tube is bigger, and the partial pressure of driving tube also can be bigger, and then cause to light after
LED is not enough to light LED in the level for the initial time lighted, and needs the level jumped by a larger margin that can just light LED.For
For common anode LED shown in Fig. 1, needing to reduce LED cathode level (i.e. the output end of its corresponding driving chip) could point
Bright LED, this certainly will occupy LED lighting time, due to the display cycle be it is fixed, lighting time extends when then will lead to display
Between shorten so that the subnormal low-light level of the brightness for the low-light level display area lighted after in LED display, causes brightness
Loss, affects normal high contrast display effect.
To solve the above-mentioned problems, following two method is mainly used at present:
The first, the output level on driving chip control LED corresponding before lighting.That is, before LED is lighted, control
Drive level output level processed is close to level when LED is lighted, while guaranteeing that LED is not lit.In this way when lighting LED
The level variation of LED can be reduced, the loss of opening time and LED display brightness is reduced.But this method easily causes
Low-light level display area display unevenness and ghost phenomenon.
The second, it controls all LED synchronizations to light, in this way when all LED light initial time, driving tube is corresponding
LED anode level is all consistent, and reduces luminance loss.But this method causes the instantaneous consume of circuit to increase, or even meeting
Cause hardware circuit operation irregularity.It need to first be closed additionally, due to low-light level display channel, therefore can be brought to channel is highlighted
Interference.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of LED display control method, system and electronic equipment, with solution
Certainly high contrast is shown down, and the problem of luminance loss occurs in the display area lighted after.
According in a first aspect, the embodiment of the invention provides a kind of LED display control methods, comprising the following steps: obtain
Gross energy of each channel LED within a display cycle；It obtains in the same display cycle, the energy of each channel LED loss；It will be each
The energy of channel LED loss is compared with each channel LED gross energy, obtains comparison result；According to the comparison result, adjustment
The display time of the LED of corresponding channel.
Optionally, the step of gross energy for obtaining each channel LED within a display cycle includes: individually to light respectively
Channel LED；Mapping table based on the electric current and pre-stored LED current and luminous flux for flowing through each channel LED obtains each logical
Road LED light flux；Display start/stop time based on each channel LED luminous flux and LED within a display cycle obtains each channel
Gross energy of the LED within a display cycle.
Optionally, described the step of obtaining the energy of each channel LED loss in the same display cycle includes: to light each lead to
Before road LED, the partial pressure of driving tube is obtained；Partial pressure based on driving tube obtains consuming needed for driving chip lights each channel LED
Extra time；Luminous flux, LED based on each channel LED show that the extra time of initial time and consuming obtains each channel
The energy of LED loss.
Optionally, it is described based on driving tube partial pressure obtain driving chip light each channel LED needed for consuming it is additional when
Between the step of include: parasitic capacitance, equivalent resistance and each channel LED both ends pressure difference obtained in each channel；Based on driving tube
Partial pressure, the parasitic capacitance in each channel and equivalent resistance and each channel LED both ends pressure difference, obtain driving chip light it is each logical
The extra time expended needed for road LED.
Optionally, the energy that each channel LED is lost is compared with each channel LED gross energy, obtains comparing knot
The step of fruit includes: accounting of the energy of each channel LED loss of acquisition in each channel LED gross energy；It is described according to the ratio
Compared with as a result, the display of the LED of adjustment corresponding channel includes: to judge the energy of each channel LED loss each the step of compensating the time
Whether the accounting in channel LED gross energy is more than or equal to preset threshold；When being more than or equal to the preset threshold, obtain corresponding logical
The display of the LED in road compensates the time；LED based on the display compensation time adjustment corresponding channel shows the time.
Optionally, the preset threshold is more than or equal to 10%.
Optionally, the step of display of the LED for obtaining corresponding channel compensates the time includes: based on the display compensation time
The light for inside flowing through the electric current of LED and the LED of pre-stored LED current and the mapping table acquisition corresponding channel of luminous flux is logical
Amount；Energy, display based on corresponding channel LED loss compensate the luminous flux and corresponding channel LED of corresponding channel LED in the time
Show that end time obtains the display compensation time of the LED of corresponding channel.
According to second aspect, the embodiment of the invention provides a kind of LED display control programs, comprising: first acquisition unit,
For obtaining gross energy of each channel LED within a display cycle；Second acquisition unit, for obtaining the same display cycle
It is interior, the energy of each channel LED loss；Comparing unit, energy for being lost to each channel LED and each channel LED gross energy into
Row compares, and obtains comparison result；Adjustment unit is used for according to the comparison result, when adjusting the display of the LED of corresponding channel
Between.
According to the third aspect, the embodiment of the invention provides a kind of electronic equipment, comprising:
Memory and processor communicate with each other connection, deposit in the memory between the memory and the processor
Computer instruction is contained, the processor is by executing the computer instruction, thereby executing above-mentioned LED display control method.
It is described computer-readable the embodiment of the invention provides a kind of computer readable storage medium according to fourth aspect
Storage medium stores computer instruction, and the computer instruction is for making the computer execute above-mentioned LED display control method.
Technical solution of the present invention has the advantages that
LED display control method provided in an embodiment of the present invention obtains each channel LED within a display cycle first
Gross energy obtains the energy of each channel LED loss in the same display cycle, then more each channel when entering in the display cycle
The energy and each channel LED gross energy of LED loss, the display time of the LED of corresponding channel is adjusted according to comparison result.This implementation
Example by comparing LED gross energy when not generating loss in the energy of LED loss in each channel and each channel got in advance,
And then the display time of the LED of corresponding channel is adjusted according to comparison result, facilitate the brightness for making up loss, improves LED and show
Consistency.
Detailed description of the invention
The features and advantages of the present invention will be more clearly understood by referring to the accompanying drawings, and attached drawing is schematically without that should manage
Solution is carries out any restrictions to the present invention, in the accompanying drawings:
Fig. 1 shows common anode LED and shows basic circuit；
Fig. 2 shows under high contrast, the high contrast timing diagram of circuit in Fig. 1；
Fig. 3 shows the flow chart of LED display control method provided in an embodiment of the present invention；
Fig. 4 shows a kind of flow chart of embodiment of LED display control method provided in an embodiment of the present invention；
Fig. 5 shows a kind of flow chart of embodiment of step S222 in Fig. 4；
Fig. 6 shows a kind of flow chart of embodiment of LED display control method provided in an embodiment of the present invention；
Fig. 7 shows a kind of flow chart of embodiment of step S342 in Fig. 6；
Fig. 8 shows the structural schematic diagram of LED display control program provided in an embodiment of the present invention；
Fig. 9 shows the structural schematic diagram of electronic equipment provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Existing LED display is in order to enhance display effect, it will usually pursue the characteristic with high contrast.Currently, real
The existing common method of high contrast is to control all channels within the same display cycle and close at same time point, each logical
Under road size of current unanimous circumstances, the LED for needing to present high brightness lights starting time earlier than the LED for needing to present low-light level
Light starting time.
When inventor's discovery realizes high contrast by the above method, the brightness for the low-light level display area lighted after is low
In normal low-light level, normal low-light level refers to not occurring the brightness with same pixel value when high contrast.For this
Phenomenon, inventor further study show that, why subnormal the brightness for the low-light level display area lighted after is low bright
Degree is because the output channel for the corresponding driving chip of LED formerly lighted has electric current to flow through, and the electric current by driving tube is each
The summation of electric current in a above-mentioned output channel, since driving tube has certain internal resistance, driving tube can occupy partial pressures.
The electric current for flowing through driving tube is bigger, and the partial pressure of driving tube also can be bigger, and then causes the LED lighted after in the starting lighted
The level at quarter is not enough to light LED, needs the level jumped by a larger margin that can just light LED.Such as common anode LED,
This, which just needs to reduce LED cathode level, can just light LED, this undoubtedly occupies LED lighting time, so as to cause the contracting of display time
It is short, the subnormal low-light level of brightness for the low-light level display area being lit after is eventually led to, luminance loss, shadow are caused
Normal high contrast display effect is rung.
For above-mentioned discovery, the embodiment of the invention provides a kind of LED display control methods, as shown in figure 3, including following
Step:
Step S11, gross energy of each channel LED within a display cycle is obtained.
It should be noted that the gross energy of each channel LED mentioned herein referred within a display cycle,
Gross energy when LED does not lose brightness in each channel.Specifically, it can individually be opened before entering the display cycle each logical
Road, to obtain the corresponding LED gross energy in each channel.Wherein, it need to guarantee corresponding in each channel LED gross energy acquisition process show
Show total duration and size of current target total duration corresponding with LED in the channel after the entrance display cycle and size of current phase
Deng target total duration refers to display duration ideally.
Step S12, it obtains in the same display cycle, the energy of each channel LED loss.
After entering the display cycle, there is electric current process in the output channel for the corresponding driving chip of LED preceding lighted, respectively
The electric current of output channel together constitutes the electric current for flowing through driving tube, since driving tube has certain internal resistance, driving tube
Occupy partial pressures.This results in the LED lighted after to be not enough to light LED in the level for the initial time lighted, and needs
The level of jump by a larger margin can just light LED.For example, needing to reduce LED cathode level could point for common anode LED
Bright LED, for common cathode LED, LED can just be lighted by needing to raise LED anode level.It so needs to occupy lighting time, lead
It causes LED to show that the time shortens, in turn results in the loss of the display brightness of the LED lighted after, claim the loss in the present embodiment
The loss for energy.
Due to before obtaining each pass loss energy, can not which channel of accurate discrimination need to carry out time bias.Cause
This, in the present embodiment, generally assumes that each channel has energy loss, and equal to the energy of the LED in each channel loss
It is obtained.
In the same display cycle, the volume expended needed for level change is completed in the energy of each channel LED loss and each channel
The outer time is related, while also related with LED light flux in each channel.
Step S13, the energy that each channel LED loses is compared with each channel LED gross energy, obtains comparison result.
Since energy loss is not present in some channels, there are energy losses in some channels.Therefore, in the present embodiment, when obtaining
After the energy for getting each channel LED loss, it is compared with each channel LED gross energy acquired in advance in step S11
Compared with, and comparison result is obtained, it is further processed according to comparison result.
Wherein, which can be the difference between the energy and gross energy of the loss of each channel LED, or each
Ratio between the energy and gross energy of channel LED loss, or other fiducial values, as long as each channel can be reflected
Relationship between the energy and gross energy of LED loss.
Step S14, according to comparison result, the display time of the LED of corresponding channel is adjusted.
Under normal circumstances, lighting time, the electric current for flowing through driving tube was relatively bigger more rearward, and the partial pressure of driving tube is opposite more
Greatly, need the time of the adjustment level of extra consumption also relatively more, i.e. the ratio that the energy of LED loss accounts for gross energy is bigger,
The absolute value of the either difference of the energy and gross energy of LED loss is smaller.It, can be for loss energy according to obtained comparison result
The display time for measuring the LED of more corresponding channel is adjusted compensation, and then compensates for luminance loss.
LED display control method provided in an embodiment of the present invention, obtains the gross energy of each channel LED first, aobvious when entering
Show in the period, obtain the energy of each channel LED loss in the same display cycle, then the energy of more each channel LED loss with
Each channel LED gross energy adjusts the display time of the LED of corresponding channel according to comparison result.The present embodiment is by comparing each logical
The energy that LED loses in road and LED gross energy when not generating loss in each channel for getting in advance, and then according to comparing knot
Fruit adjusts the display time of the LED of corresponding channel, facilitates more for the luminance loss lighted after in the same display cycle
Channel in LED show the time be adjusted, i.e., by adjusting its show time, with make up its loss brightness.
The embodiment of the invention also provides a kind of LED display control methods, as shown in Figure 4, comprising the following steps:
Step S21, gross energy of each channel LED within a display cycle is obtained.Wherein, the gross energy of each channel LED
It refers within a display cycle, when luminance loss not occurring, the corresponding energy of each channel LED.As a kind of optional implementation
Mode, in the present embodiment, step S21 includes:
Step S211, each channel LED is individually lighted.That is, it is each defeated individually to control driving chip before entering the display cycle
Output driving level in channel is to corresponding LED out, and when lighting the LED in a channel, the LED in other channels is in close state,
Influence of the driving tube partial pressure to each channel LED display brightness can be excluded as a result,.
It should be noted that the display total duration and size of current of each channel LED and the channel after the entrance display cycle
LED target total duration and size of current are equal.
Step S212, the mapping table based on the electric current and pre-stored LED current and luminous flux that flow through each channel LED
Obtain each channel LED luminous flux.
By taking a channel as an example, the electric current for flowing through the channel LED is acquired first, is then inquired LED lamp bead handbook and is obtained
The mapping table of LED current and luminous flux is obtained, it can be learnt that the luminous flux of the channel LED.Similarly, each channel LED light is logical
Amount is so to obtain.
Step S213, the display start/stop time based on each channel LED luminous flux and LED within a display cycle obtains each
Gross energy of the channel LED within a display cycle.
Similarly, by taking a channel as an example, after acquiring the channel LED luminous flux, when the starting shown in conjunction with LED
Between and terminate the time, by integral operation it can be seen that the gross energy of the channel LED.Similarly, the gross energy of each channel LED is
So obtain.
Step S22, it obtains in the same display cycle, the energy of each channel LED loss.As a kind of optional embodiment,
In the present embodiment, step S22 includes:
Step S221, before lighting each channel LED, the partial pressure of driving tube is obtained.
Specifically, the internal resistance R of driving tube is acquiredinnerAnd the electricity of driving tube is flowed through before lighting each channel LED
Flow Isum(t), the product of the two is the partial pressure of driving tube this moment
Step S222, the partial pressure based on driving tube obtains the extra time of consuming needed for driving chip lights each channel LED.
As a kind of optional embodiment, in the present embodiment, as shown in figure 5, step S222 includes:
Step S222a, parasitic capacitance, equivalent resistance and each channel LED both ends pressure difference in each channel are obtained.
By taking a channel as an example, when the LED when the channel lights completion, according to the channel light complete the moment flow through LED
Electric current inquire LED lamp bead handbook, acquire the pressure difference at the both ends LED in the channel
Step S222b, the partial pressure based on driving tube, the parasitic capacitance in each channel and equivalent resistance and each channel LED
Both ends pressure difference obtains the extra time of consuming needed for driving chip lights each channel LED within the current display cycle.
Similarly, by taking a channel as an example, when LED lights completion, the both ends LED pressure difference in the moment channel is got
Afterwards, it is assumed that before the channel LED lights completion, the output level in the channel is U in driving chipi, circuit supply voltage is VCC,
Under the influence of not considering driving tube partial pressure, for common anode LED, the output level in the channel needs to reduce in driving chipThe channel LED can just be lighted；For common cathode LED, the output level in the channel in driving chip
It needs to improveLED can just be lighted.
Assuming that the parasitic capacitance in the channel is Ci, equivalent resistance Ri, then corresponding timeconstantτi=Ri*Ci。
In conjunction with the partial pressure of the above-mentioned driving tube acquiredTime parameter τiAnd the both ends LED pressure differenceIt can
It calculates driving chip and lights the extra time expended needed for the channel LED are as follows:
Wherein, i is channel number,The extra time of consuming needed for lighting the channel LED for driving chip, τiFor
Time parameter, VCC are circuit supply voltage,For the channel LED both ends pressure difference,For the forerunner for lighting the channel LED
The partial pressure of dynamic pipe.
Step S223, luminous flux, LED based on each channel LED show that the extra time of initial time and consuming obtains
The energy of each channel LED loss.
Specifically, the energy of each channel LED loss is obtained in the present embodiment by following integral operation:
Wherein,For the i-th channel LED loss energy,Initial time is lighted for the i-th channel LED,The extra time of consuming needed for lighting the channel LED for driving chip,For the luminous flux of the i-th channel LED.
Step S23, the energy that each channel LED loses is compared with each channel LED gross energy, obtains comparison result.
Specific descriptions are identical as step S13, and this will not be repeated here.
Step S24, according to comparison result, the display time of the LED of corresponding channel is adjusted.It specifically describes and step S14 phase
Together, this will not be repeated here.
The embodiment of the invention also provides a kind of LED display control methods, as shown in Figure 6, comprising:
Step S31, gross energy of each channel LED within a display cycle is obtained.It specifically describes and step S21 or step
S11 is identical, and this will not be repeated here.
Step S32, it obtains in the same display cycle, the energy of each channel LED loss.It specifically describes and step S22 or step
Rapid S12 is identical, and this will not be repeated here.
Step S33, the energy that each channel LED loses is compared with each channel LED gross energy, obtains comparison result.
Specific descriptions can refer to step S13.
Step S34, according to comparison result, the display time of the LED of corresponding channel is adjusted.Specific descriptions can refer to step
S14。
In addition, in the present embodiment, step S33 includes: to obtain each channel LED to lose as a kind of optional embodiment
Accounting of the energy in each channel LED gross energy.
Correspondingly, step S34 includes:
Step S341, judge whether accounting of the energy of each channel LED loss in each channel LED gross energy is more than or equal to
Preset threshold.
Step S342, when being more than or equal to the preset threshold, the display compensation time of the LED of corresponding channel is obtained.
In the present embodiment, threshold value is preset, after getting accounting of the energy of loss in gross energy, judges accounting
Whether it is more than or equal to the preset threshold, when being more than or equal to the preset threshold, then can determine that the channel corresponds to low-light level and shows
Region then carries out time bias to it.Conversely, then can determine that the channel corresponds to highlight when accounting is less than the preset threshold
Display area is spent, without carrying out display time bias to it.Can have as a result, and targetedly carry out display time bias, avoid
The waste of computing resource.
As a kind of optional embodiment, in the present embodiment, preset threshold is more than or equal to 10%.It can be 10% or 15%
Or 20% or 25% etc., preferably 10%.When preset threshold is 10%, i.e., the accounting when off-energy in gross energy is greater than
When equal to 10%, then assert that the channel is corresponding for low-light level display area, otherwise for region is highlighted.
As a kind of optional embodiment, in the present embodiment, as shown in fig. 7, step S342 includes:
Step S342a, logical based on the electric current and pre-stored LED current that flow through LED in the display compensation time and light
The mapping table of amount obtains the luminous flux of the LED of corresponding channel.
Step S342b, energy, display based on corresponding channel LED loss compensate the luminous flux of corresponding channel LED in the time
And corresponding channel LED shows that end time obtains the display compensation time of the LED of corresponding channel.
Specifically, the time is compensated by the display that following integral operation obtains the LED of corresponding channel in the present embodiment:
Wherein, chlFor the corresponding channel number in low-light level display area redefined,For chlChannel LED
The energy of loss,For chlThe display end time of channel LED,For chlWhen the display compensation of channel LED
Between,For chlThe luminous flux of the LED in channel.
Due toIt is it is known that therefore, can be calculated
Step S343, the LED based on the display compensation time adjustment corresponding channel shows the time.
After the LED for acquiring corresponding channel shows the compensation time, then the display is compensated into time bias and led to corresponding
The LED in road was shown in the time, to make up the energy that LED loses in corresponding channel.
A specific example of LED display control method provided in an embodiment of the present invention is introduced below:
The driving chip output channel being connected with all LED driven with single driving tube is 1 unit, if output channel
Number is n.If a display cycle time is T, the LED current for flowing through the driving of i-th of output channel is Ii(t), wherein 1≤i
≤ n and i are integer, 0≤t≤T.
If the internal resistance of driving tube is Rinner, the real-time current for flowing through driving tube isIf
I-th of channels drive LED start-up time beClose moment isWhereinEach channel flows through the electric current of driving tube before opening
ForThe driving tube at corresponding moment, which divides, is
The electric current inquiry lamp bead handbook for completing the moment is opened according to the i-th channel, obtains the pressure difference at the corresponding both ends LED
If driving chip channel level is U before LED is lightedi.It is right under the influence of no driving tube partial pressure if circuit supply voltage is VCC
For common anode, driving chip the i-th road output level is reducedLED can just be lighted；For altogether
For yin, driving chip the i-th road output level is improvedLED can just be lighted；
If the column parasitic capacitance in the i-th channel of driving chip is Ci, equivalent resistance Ri, then corresponding timeconstantτi=Ri*
Ci.Driving chip output level additionally changesTime be
Inquiry uses LED lamp bead handbook, if the LED light flux of i-th of channels drive isThe current period channel
The energy of loss isIndividually open each path computation channel
Gross energy, being opened on channel with to exclude driving tube partial pressure influences, and gross energy isIfThen corresponding channel is that low-light level is shown；Otherwise to be highlighted.If low-light level display channel number is
P, low-light level display channel number is chl, wherein 1≤l≤p, and l is integer；
If existing simultaneously low-light level after above-mentioned steps detection to show and be highlighted, enter in next step；Otherwise enter
Next display cycle；
If it existsAnd the corresponding channel j belongs to display for a long time, the corresponding channel k belongs to the short time
Display, then it is assumed that high contrast interference occur, into next step；Otherwise terminate this process；
Channel number is chlLED light and flow through the electric current of driving tube when starting and beThe partial pressure of driving tube
ForDriving chip corresponding channel changes additional elapsed time
The light intensity of loss isAll low-light levels are calculated accordingly
The loss light intensity of display channel, i.e. l traverse [1, p].
Calculate compensation the time, and will compensation the time be added to LED show the time after, i.e., backward elongate LED show the time.If logical
Road number is chlThe time of compensation isLED light flux is during compensationIt obtains according to compensation
Period flows through LED current inquiry LED lamp bead handbook.MakeWhereinBe it is known, can calculate
The current display cycle completes, into next display cycle.
The embodiment of the invention also provides a kind of LED display control programs, as shown in Figure 8, comprising:
First acquisition unit 41, for obtaining gross energy of each channel LED within a display cycle；
Second acquisition unit 42, for obtaining in the same display cycle, the energy of each channel LED loss；
Comparing unit 43, the energy for losing to each channel LED are compared with each channel LED gross energy, are compared
Relatively result；
Adjustment unit 44, for adjusting the display time of the LED of corresponding channel according to comparison result.
For the specific of above-mentioned first acquisition unit 41, second acquisition unit 42, comparing unit 43 and adjustment unit 44
The description of reference method embodiment part is described, details are not described herein.
LED display control program provided in an embodiment of the present invention, obtains each channel LED by first acquisition unit first
Gross energy obtains the energy of each channel LED loss in the same display cycle by second acquisition unit when entering in the display cycle
Amount, then by comparing the energy and each channel LED gross energy of more each channel LED loss of unit, finally by adjustment unit
The display time of the LED of corresponding channel is adjusted according to comparison result.The energy that the present embodiment loses by comparing LED in each channel
With LED gross energy when not generating loss in each channel for getting in advance, and then corresponding channel is adjusted according to comparison result
The display time of LED facilitates the brightness for making up loss, improves the consistency that LED is shown.
The embodiment of the invention also provides a kind of electronic equipment, as shown in figure 9, the electronic equipment may include processor 51
With memory 52, wherein processor 51 can be connected with memory 52 by bus or other modes, to pass through bus in Fig. 9
For connection.
Processor 51 can be central processing unit (Central Processing Unit, CPU).Processor 51 can be with
For other general processors, digital signal processor (Digital Signal Processor, DSP), specific integrated circuit
(Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
The combination of the chips such as discrete hardware components or above-mentioned all kinds of chips.
Memory 52 is used as a kind of non-transient computer readable storage medium, can be used for storing non-transient software program, non-
Transient computer executable program and module, as the corresponding program instruction of LED display control method in the embodiment of the present invention/
Module (for example, first acquisition unit shown in Fig. 8 41, second acquisition unit 42, comparing unit 43 and adjustment unit 44).Processing
Non-transient software program, instruction and the module that device 51 is stored in memory 52 by operation, thereby executing each of processor
Kind functional application and data processing, i.e. LED display control method in realization above method embodiment.
Memory 52 may include storing program area and storage data area, wherein storing program area can storage program area,
Application program required at least one function；It storage data area can the data etc. that are created of storage processor 51.In addition, storage
Device 52 may include high-speed random access memory, can also include non-transient memory, for example, at least a magnetic disk storage
Part, flush memory device or other non-transient solid-state memories.In some embodiments, it includes relative to place that memory 52 is optional
The remotely located memory of device 51 is managed, these remote memories can pass through network connection to processor 51.The reality of above-mentioned network
Example includes but is not limited to internet, intranet, local area network, mobile radio communication and combinations thereof.
One or more of modules are stored in the memory 52, when being executed by the processor 51, are executed
LED display control method in embodiment as shown in figs. 1-7.
Above-mentioned electronic equipment detail can correspond to corresponding associated description in embodiment referring to FIG. 1 to 7
Understood with effect, details are not described herein again.
It is that can lead to it will be understood by those skilled in the art that realizing all or part of the process in above-described embodiment method
Computer program is crossed to instruct relevant hardware and complete, the program can be stored in a computer-readable storage medium
In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can for magnetic disk,
CD, read-only memory (Read-Only Memory, ROM), random access memory (RandomAccessMemory,
RAM), flash memory (Flash Memory), hard disk (Hard Disk Drive, abbreviation: HDD) or solid state hard disk (Solid-
State Drive, SSD) etc.；The storage medium can also include the combination of the memory of mentioned kind.
Although being described in conjunction with the accompanying the embodiment of the present invention, those skilled in the art can not depart from the present invention
Spirit and scope in the case where various modifications and variations can be made, such modifications and variations are each fallen within by appended claims institute
Within the scope of restriction.
Claims (10)
1. a kind of LED display control method, which comprises the following steps:
Obtain gross energy of each channel LED within a display cycle；
It obtains in the same display cycle, the energy of each channel LED loss；
The energy that each channel LED loses is compared with each channel LED gross energy, obtains comparison result；
According to the comparison result, the display time of the LED of corresponding channel is adjusted.
2. the method according to claim 1, wherein described obtain each channel LED within a display cycle
The step of gross energy includes:
Individually light each channel LED；
Mapping table based on the electric current and pre-stored LED current and luminous flux for flowing through each channel LED obtains each channel LED
Luminous flux；
Display start/stop time based on each channel LED luminous flux and LED within a display cycle obtains each channel LED at one
Gross energy in display cycle.
3. according to the method described in claim 2, it is characterized in that, described obtain each channel LED loss in the same display cycle
Energy the step of include:
Before lighting each channel LED, the partial pressure of driving tube is obtained；
Partial pressure based on driving tube obtains the extra time of consuming needed for driving chip lights each channel LED；
Luminous flux, LED based on each channel LED show that the extra time of initial time and consuming obtains each channel LED loss
Energy.
4. according to the method described in claim 3, it is characterized in that, the partial pressure acquisition driving chip based on driving tube is lighted
The step of extra time expended needed for each channel LED includes:
Obtain parasitic capacitance, equivalent resistance and each channel LED both ends pressure difference in each channel；
Partial pressure based on driving tube, the parasitic capacitance in each channel and equivalent resistance and each channel LED both ends pressure difference, are driven
Dynamic chip lights the extra time expended needed for each channel LED.
5. the method according to claim 1, wherein the energy that each channel LED is lost and each channel LED
The step of gross energy is compared, and obtains comparison result include:
Obtain accounting of the energy of each channel LED loss in each channel LED gross energy；
It is described according to the comparison result, the step of adjusting the display time of the LED of corresponding channel includes:
Judge whether accounting of the energy of each channel LED loss in each channel LED gross energy is more than or equal to preset threshold；
When being more than or equal to the preset threshold, the display compensation time of the LED of corresponding channel is obtained；
LED based on the display compensation time adjustment corresponding channel shows the time.
6. according to the method described in claim 5, it is characterized in that, the preset threshold is more than or equal to 10%.
7. according to the method described in claim 5, it is characterized in that, the display of the LED for obtaining corresponding channel compensates the time
The step of include:
Mapping table based on the electric current and pre-stored LED current and luminous flux that flow through LED in the display compensation time obtains
The luminous flux of the LED of corresponding channel；
Energy, display based on corresponding channel LED loss compensate the luminous flux and corresponding channel of corresponding channel LED in the time
LED shows that end time obtains the display compensation time of the LED of corresponding channel.
8. a kind of LED display control program characterized by comprising
First acquisition unit, for obtaining gross energy of each channel LED within a display cycle；
Second acquisition unit, for obtaining in the same display cycle, the energy of each channel LED loss；
Comparing unit, the energy for losing to each channel LED are compared with each channel LED gross energy, obtain comparison result；
Adjustment unit, for adjusting the display time of the LED of corresponding channel according to the comparison result.
9. a kind of electronic equipment characterized by comprising
Memory and processor communicate with each other connection, are stored in the memory between the memory and the processor
Computer instruction, the processor are described in any item thereby executing claim 1-7 by executing the computer instruction
LED display control method.
10. a kind of computer readable storage medium, which is characterized in that the computer-readable recording medium storage has computer to refer to
It enables, the computer instruction is for making the computer perform claim require the described in any item LED display control methods of 1-7.
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| CN109346000B (en) | 2020-05-26 |
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