CN102842285B - Brightness control method, LED-lattice module and LED-lattice screen - Google Patents
Brightness control method, LED-lattice module and LED-lattice screen Download PDFInfo
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- CN102842285B CN102842285B CN201210350433.0A CN201210350433A CN102842285B CN 102842285 B CN102842285 B CN 102842285B CN 201210350433 A CN201210350433 A CN 201210350433A CN 102842285 B CN102842285 B CN 102842285B
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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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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/02—Composition of display devices
- G09G2300/026—Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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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
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
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Abstract
The embodiment of the invention discloses a brightness control method, an LED-lattice module and an LED-lattice screen, and aims to achieve brightness compensation of uneven seams in the LED-lattice screen. The brightness control method provided by the embodiment of the invention comprises the following steps: utilizing a distance sensor to acquire the detection distance between the edge of an LED-lattice module at the end and that of an adjacent LED-lattice module; judging the relationship between the detection distance and the standard distance; turning down the brightness of LEDs at the edge of the LED-lattice module at the end if the detection distance is smaller than the standard distance; and turning up the brightness of LEDs at the edge of the LED-lattice module at the end if the detection distance is larger than the standard distance. By implementing the scheme of the invention, uneven brightness of the LED-lattice screen at the spliced part due to uneven seams between the LED-lattice modules is eliminated, and accordingly, the display effect of the whole screen is improved.
Description
Technical field
The present invention relates to technical field of LED display, particularly relate to a kind of brightness adjusting method and LED dot array module, screen.
Background technology
Large LED (Light Emitting Diode, light emitting diode) dot matrix screen is spliced by multiple LED dot array module and forms.
In same LED dot array module, distance between every a line with two LED that each arranges is identical, in addition, overall display brightness in order to ensure large LED dot matrix screen is consistent, require that the Distance geometry afore-mentioned distance between the LED of the rear adjacent LED lattice module edge of splicing is also identical, namely require that seam both sides are parallel and distance equals a gauged distance.
But seam during actual splicing between LED dot array module is not necessarily even.Such as, refer to Fig. 1, be one piece of LED dot matrix screen diagrams, this screen is spliced by 4 pieces of LED dot array module, comprising: LED dot array module 01, LED dot array module 02, LED dot array module 03 and LED dot array module 04.Wherein, seam both sides between LED dot array module 01 with LED dot array module 02 are parallel and distance equals gauged distance, seam both sides between LED dot array module 01 and LED dot array module 03 are not parallel, and the seam both sides between LED dot array module 02 with LED dot array module 04 are parallel but distance is greater than gauged distance.
Seam between this LED dot array module is uneven makes the brightness irregularities of LED dot matrix screen in stitching portion, have impact on the display effect of whole screen.The technology that there is no at present can solve this problem making LED dot matrix screen brightness irregularities because the seam between LED dot array module is uneven.
Summary of the invention
In order to solve the problem, embodiments provide a kind of brightness adjusting method and LED dot array module, screen, for carrying out luminance compensation to the uneven seam in LED dot matrix screen, by implementing the inventive method, the uneven brightness irregularities of LED dot matrix screen in stitching portion caused of seam between can eliminating due to LED dot array module, promotes the display effect of whole screen.
A kind of brightness adjusting method, comprising:
Utilize the detecting distance between range sensor acquisition local terminal light emitting diode LED dot array module edge and adjacent LED lattice module edge; Judge the relation between described detecting distance and gauged distance; If described detecting distance is less than described gauged distance, then turn down the brightness of the LED of local terminal LED dot array module edge; If described detecting distance is greater than described gauged distance, then heighten the brightness of the LED of local terminal LED dot array module edge.
Preferably, the quantity of described range sensor is at least 8, and the equidistant edge being arranged at the local terminal LED dot array module back side, several LED of each range sensor corresponding local terminal LED dot array module edge.
Preferably, the brightness turning down the LED of local terminal LED dot array module edge described in comprises: according to the luminance factor of described detecting distance inquiry correspondence, the corresponding relation of described detecting distance and luminance factor defaults in brightness regulation table; The brightness of the LED of local terminal LED dot array module edge is turned down according to described luminance factor.
Preferably, the brightness heightening the LED of local terminal LED dot array module edge described in comprises: according to the luminance factor of described detecting distance inquiry correspondence, the corresponding relation of described detecting distance and luminance factor defaults in brightness regulation table; The brightness of the LED of local terminal LED dot array module edge is heightened according to described luminance factor.
A kind of LED dot array module, comprising:
Range sensor, for obtaining the detecting distance between local terminal LED dot array module edge and adjacent LED lattice module edge; Judging unit, for judging the relation between described detecting distance and gauged distance;
Brightness adjusting unit, for when described detecting distance is less than described gauged distance, turns down the brightness of the LED of local terminal LED dot array module edge; Also for when described detecting distance is greater than described gauged distance, heighten the brightness of the LED of local terminal LED dot array module edge.
Preferably, described brightness adjusting unit comprises further: inquiry subelement, and for the luminance factor corresponding according to described detecting distance inquiry, the corresponding relation of described detecting distance and luminance factor defaults in brightness regulation table; Regulate subelement, for regulating the brightness of the LED of local terminal LED dot array module edge according to described luminance factor.
A kind of LED dot matrix screen, comprising:
Even number LED dot array module as above;
Described even number LED dot array module is by the described LED dot matrix screen of splicing composition.
As can be seen from the above technical solutions, the embodiment of the present invention has the following advantages:
The detecting distance between local terminal LED dot array module edge and adjacent LED lattice module edge is obtained by range sensor, again this detecting distance and gauged distance are compared, when detecting distance is less than gauged distance, turn down the brightness of the LED of local terminal LED dot array module edge, when detecting distance is greater than gauged distance, heighten the brightness of the LED of local terminal LED dot array module edge, thus eliminate the brightness irregularities of LED dot matrix screen in stitching portion caused because the seam between LED dot array module is uneven, and improve the display effect of whole screen.
Accompanying drawing explanation
Fig. 1 is the LED dot matrix screen diagrams of present technology;
Fig. 2 is the brightness adjusting method process flow diagram of first embodiment of the invention;
Fig. 3 is the brightness adjusting method process flow diagram of second embodiment of the invention;
Fig. 4 is that in LED dot array module of the present invention, LED and range sensor arrange schematic diagram;
Fig. 5 is the detecting distance of brightness regulation table of the present invention and the relation curve of luminance factor;
Fig. 6 is the LED dot array module structural drawing of third embodiment of the invention;
Fig. 7 is the LED dot matrix screen diagrams of fourth embodiment of the invention.
Embodiment
Below in conjunction with the Figure of description in the present invention, be clearly and completely described the technical scheme in invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiments provide a kind of brightness adjusting method, for carrying out luminance compensation to the uneven seam in LED dot matrix screen, by implementing the inventive method, the uneven brightness irregularities of LED dot matrix screen in stitching portion caused of seam between can eliminating due to LED dot array module.The embodiment of the present invention also provides relevant LED dot array module and screen, will be described in detail respectively below.
In the ideal situation, in same LED dot matrix screen, the distance between every a line with two LED that each arranges is identical, brightness uniformity everywhere when the whole screen display of LED dot matrix screen can be made like this to show, thus ensures display quality.But because LED dot matrix screen is spliced by multiple LED dot array module, all there is a seam between every two LED dot array module, in practical situations both, seam is not necessarily uniform.As shown in Figure 1, seam both sides possibility is also not parallel, or the distance on seam both sides is not equal to gauged distance, and the distance between two adjacent LEDs can be caused like this to be greater than or less than standard value.When distance between two adjacent LEDs is greater than standard value, the overall display brightness at these 2 places can lower than whole screen mean flow rate, and when the distance when two adjacent LEDs between is less than standard value, these 2 the overall display brightness located can higher than whole screen mean flow rate.
First embodiment of the invention will be described in detail to a kind of brightness adjusting method, and the brightness adjusting method idiographic flow described in the present embodiment refers to Fig. 2, comprises step:
201, the detecting distance between range sensor acquisition local terminal LED dot array module edge and adjacent LED lattice module edge is utilized.
Wherein, this range sensor is arranged at the edge at the LED dot array module back side, and can detect the distance at local terminal LED dot array module edge and adjacent LED lattice module edge, this distance is called detecting distance by the present embodiment.Detecting distance instruction be distance between local terminal LED dot array module edge and adjacent LED lattice module edge, there is transformational relation in the distance therefore between detecting distance and LED.Distance between LED equals the distance that detecting distance adds 2 times of LED and edge.
The do not adjust the distance quantity of sensor of the present embodiment does concrete restriction, minimumly can be 4, a corresponding range sensor in edge, now all LED in a corresponding respective edges row or column of range sensor, at most can be identical with the quantity of all LED on LED dot array module edge row and column, a now corresponding edge LED of range sensor.In the present embodiment, only regulate the brightness of the LED of edge, the brightness of the LED of position, intermediate portion is not done to consider.
This detecting distance can be used in follow-up determining step.
202, the relation between this detecting distance and gauged distance is judged.
Wherein, gauged distance can be a definite value, allows to preset according to reality the scope that fluctuates.Relation between detecting distance and gauged distance comprises and is greater than, equals and be less than relation.In a practical situation, can not to depart from gauged distance too many for detecting distance.
When the corresponding range sensor in edge, can only differentiate seam both sides parallel when, the detecting distance between seam both sides and the relation between gauged distance.When the corresponding range sensor of an edge LED, the relation between LED that each LED on an edge is adjacent on LED dot array module edge can be differentiated to greatest extent, thus can realize for single led brightness regulation, seam both sides whether equality can be differentiated in this case.The quantity of range sensor affects the degree of regulation of the present embodiment brightness adjusting method.In actual applications, preferably, the quantity of edge LED is the integral multiple of range sensor quantity, is correlated with and continuous print edge LED with a range sensor several positions corresponding.
If 203 detecting distance are less than gauged distance, then turn down the brightness of the LED of local terminal LED dot array module edge.
When distance between two adjacent LEDs is less than standard value, the overall display brightness at these 2 places can higher than whole screen mean flow rate.In this step, if detecting distance is less than gauged distance, namely illustrates that the LED that range sensor is corresponding and the distance between the LED that seam is adjacent are less than standard value, therefore, need the brightness of the LED turning down local terminal LED dot array module edge.
If 204 detecting distance are greater than gauged distance, then heighten the brightness of the LED of local terminal LED dot array module edge.
When distance between two adjacent LEDs is greater than standard value, the overall display brightness at these 2 places can lower than whole screen mean flow rate.In this step, if detecting distance is greater than gauged distance, namely illustrates that the LED that range sensor is corresponding and the distance between the LED that seam is adjacent are greater than standard value, therefore, need the brightness of the LED heightening local terminal LED dot array module edge.
If 205 detecting distance equal gauged distance, then need not regulate the brightness of the LED of local terminal LED dot array module edge.
Wherein, step 203, step 204 and step 205 three is coordination, without critical order relation.
In the present embodiment, the detecting distance between local terminal LED dot array module edge and adjacent LED lattice module edge is obtained by range sensor, again this detecting distance and gauged distance are compared, when detecting distance is less than gauged distance, turn down the brightness of the LED of local terminal LED dot array module edge, when detecting distance is greater than gauged distance, heighten the brightness of the LED of local terminal LED dot array module edge, thus eliminate the brightness irregularities of LED dot matrix screen in stitching portion caused because the seam between LED dot array module is uneven, and improve the display effect of whole screen.
Second embodiment of the invention remarks additionally to the brightness adjusting method described in the first embodiment, therefore, the description of one or more steps of previous embodiment is applicable to the one or more steps in the present embodiment.The brightness adjusting method concrete steps of the present embodiment refer to Fig. 3, comprise step:
301, the detecting distance between at least 8 range sensors acquisition local terminal light emitting diode LED dot array module edges and adjacent LED lattice module edge is utilized.
Wherein, the quantity of range sensor is at least 8, and the equidistant edge being arranged at the local terminal LED dot array module back side, several LED of each range sensor corresponding local terminal LED dot array module edge, therefore, each edge correspondence at least 2 range sensors.The number of detecting distance is identical with the quantity of range sensor.
This detecting distance can be used in follow-up determining step.
Such as, the LED dot array module of 10 × 10, as Fig. 4 shows, wherein, 4 edges have 36 edge LED, arrange 12 range sensors, continuous print 3 LED on a range sensor corresponding edge, and range sensor is arranged at the opposing face of 3 LED of its correspondence.Such as, range sensor 401 corresponding LED402, LED403 and LED404.In like manner, other 11 range sensors other 33 edge LED corresponding.
302, the relation between detecting distance and gauged distance is judged.
Wherein, gauged distance can be a definite value, allows to preset according to reality the scope that fluctuates.Relation between detecting distance and gauged distance comprises and is greater than, equals and be less than relation.In a practical situation, can not to depart from gauged distance too many for detecting distance.
Such as, suppose that the gauged distance between LED dot array module is 5 millimeters, the value of gauged distance allows to fluctuate 0.01 millimeter, and the installation deviation in engineering is positive and negative 1 millimeter, then the span of detecting distance is 4 to 6 millimeters.
If 303 detecting distance are less than gauged distance, then turn down the brightness of the LED of local terminal LED dot array module edge.Wherein, the brightness turning down the LED of local terminal LED dot array module edge comprises:
3031, corresponding according to detecting distance inquiry luminance factor.
Wherein, the corresponding relation of detecting distance and luminance factor defaults in brightness regulation table, and brightness regulation table is pre-stored in certain control module of LED dot matrix screen.Brightness regulation table is specifically formulated according to actual conditions, and the brightness regulation table that the LED dot array module of different model or specification is corresponding is also different, does not do concrete restriction here.
3032, the brightness of the LED of local terminal LED dot array module edge is turned down according to luminance factor.
Be less than the prerequisite of gauged distance at detecting distance under, the luminance factor inquired in this step is less than 1.
Wherein, luminance factor is the number that value is greater than 0, and in actual applications, luminance factor is probably 0.5 to 1.5.
Accept the example described in previous step, brightness regulation table in this example embodiment refers to table 1.
Table 1
Luminance factor in above-mentioned example is 0.8 to 1.2.Referring to Fig. 5, is the detecting distance of brightness regulation table described in this example and the relation curve of luminance factor.
The principle regulating brightness is exactly that a luminance factor is multiplied by original brightness.In this step, when needing the brightness of the LED turning down local terminal LED dot array module edge, original brightness is multiplied by by detecting distance inquire be less than 1 luminance factor.
If 304 detecting distance are greater than gauged distance, then heighten the brightness of the LED of local terminal LED dot array module edge.Wherein, the brightness heightening the LED of local terminal LED dot array module edge comprises:
3041, corresponding according to detecting distance inquiry luminance factor.
Wherein, the corresponding relation of detecting distance and luminance factor defaults in brightness regulation table.Explanation about brightness regulation table refers to the relevant record of the present embodiment step 303, repeats no more here.
3042, the brightness of the LED of local terminal LED dot array module edge is heightened according to luminance factor.
Be greater than the prerequisite of gauged distance at detecting distance under, the luminance factor inquired in this step is greater than 1.
The principle regulating brightness is exactly that a luminance factor is multiplied by original brightness.In this step, when needing the brightness of the LED heightening local terminal LED dot array module edge, original brightness is multiplied by by detecting distance inquire be greater than 1 luminance factor.
If 305 detecting distance equal described gauged distance, then need not regulate the brightness of the LED of local terminal LED dot array module edge.
Equal the prerequisite of gauged distance at detecting distance under, the luminance factor inquired in this step is 1.
The principle regulating brightness is exactly that a luminance factor is multiplied by original brightness.In this step, when not needing the brightness of the LED regulating local terminal LED dot array module edge, original brightness can be multiplied by luminance factor 1, or any process do not carried out to brightness.
Wherein, step 303, step 304 and step 305 three is coordination, without critical order relation.
In the present embodiment, the detecting distance between local terminal LED dot array module edge and adjacent LED lattice module edge is obtained by range sensor, again this detecting distance and gauged distance are compared, when detecting distance is less than gauged distance, the brightness of the LED of local terminal LED dot array module edge is turned down according to luminance factor, when detecting distance is greater than gauged distance, the brightness of the LED of local terminal LED dot array module edge is heightened according to luminance factor, thus eliminate the brightness irregularities of LED dot matrix screen in stitching portion caused because the seam between LED dot array module is uneven, and improve the display effect of whole screen.
Third embodiment of the invention will be described in detail to a kind of LED dot array module, comprise one or more unit for realizing one or more steps of preceding method in the LED dot array module described in the present embodiment.Therefore, corresponding unit in described LED dot array module is applicable to the description of step each in preceding method.Refer to Fig. 6, the LED dot array module structure described in the present embodiment comprises:
Range sensor 601, for obtaining the detecting distance between local terminal LED dot array module edge and adjacent LED lattice module edge.
Wherein, the quantity of range sensor is at least 8, and the equidistant edge being arranged at the local terminal LED dot array module back side, several LED of each range sensor corresponding local terminal LED dot array module edge, therefore, each edge correspondence at least 2 range sensors.The number of detecting distance is identical with the quantity of range sensor.
This detecting distance can be used in carrying out follow-up judgement.
LED dot array module is in figure 6 the 10 × 10LED lattice module with Fig. 5 same size, arranges 12 range sensors, continuous print 3 LED on a range sensor corresponding edge.
Judging unit 602, communicates to connect with range sensor 601, for judging the relation between detecting distance and gauged distance.
Wherein, gauged distance can be a definite value, allows to preset according to reality the scope that fluctuates.Relation between detecting distance and gauged distance comprises and is greater than, equals and be less than relation.In a practical situation, can not to depart from gauged distance too many for detecting distance.
Brightness adjusting unit 603, communicate to connect with judging unit 602, for when detecting distance is less than gauged distance, turn down the brightness of the LED of local terminal LED dot array module edge, also for when detecting distance is greater than gauged distance, heighten the brightness of the LED of local terminal LED dot array module edge.
Brightness adjusting unit 603 comprises further:
Inquiry subelement 6031, for the luminance factor corresponding according to detecting distance inquiry.
The corresponding relation of detecting distance and luminance factor defaults in brightness regulation table, and brightness regulation table is pre-stored in brightness adjusting unit 603.Explanation about brightness regulation table refers to the relevant record of a upper embodiment step 303, repeats no more here.Brightness regulation table is specifically formulated according to actual conditions, and the brightness regulation table that the LED dot array module of different model or specification is corresponding is also different, does not do concrete restriction here.
Regulate subelement 6032, for regulating the brightness of the LED of local terminal LED dot array module edge according to luminance factor.
Be less than the prerequisite of gauged distance at detecting distance under, the luminance factor that inquiry subelement 6031 inquires is less than 1.The principle regulating brightness is exactly that a luminance factor is multiplied by original brightness.When needing the brightness of the LED turning down local terminal LED dot array module edge, regulate subelement 6032 original brightness is multiplied by by detecting distance inquire be less than 1 luminance factor.
Be greater than the prerequisite of gauged distance at detecting distance under, the luminance factor that inquiry subelement 6031 inquires is greater than 1.The principle regulating brightness is exactly that a luminance factor is multiplied by original brightness.When needing the brightness of the LED heightening local terminal LED dot array module edge, regulate subelement 6032 original brightness is multiplied by by detecting distance inquire be greater than 1 luminance factor.
Equal the prerequisite of gauged distance at detecting distance under, the luminance factor that inquiry subelement 6031 inquires is 1.The principle regulating brightness is exactly that a luminance factor is multiplied by original brightness.When not needing the brightness of the LED regulating local terminal LED dot array module edge, regulating subelement 6032 original brightness can be multiplied by luminance factor 1, or any process not carried out to brightness.
In the present embodiment, the detecting distance between local terminal LED dot array module edge and adjacent LED lattice module edge is obtained by range sensor 601, this detecting distance and gauged distance compare by judging unit 602 again, when detecting distance is less than gauged distance, subelement 6032 is regulated to turn down the brightness of the LED of local terminal LED dot array module edge according to luminance factor, when detecting distance is greater than gauged distance, subelement 6032 is regulated to heighten the brightness of the LED of local terminal LED dot array module edge according to luminance factor, thus eliminate the brightness irregularities of LED dot matrix screen in stitching portion caused because the seam between LED dot array module is uneven, and improve the display effect of whole screen.
Fourth embodiment of the invention will be described a kind of LED dot matrix screen, comprise multiple LED dot array module for realizing one or more steps of preceding method in the LED dot matrix screen described in the present embodiment.Therefore, corresponding LED dot array module in described LED dot matrix screen is applicable to the description of step each in preceding method.Refer to Fig. 7, the LED dot array module structure described in the present embodiment comprises:
Even number LED dot array module as described in the third embodiment of the present invention.
Wherein, a LED dot array module comprises range sensor, judging unit and brightness adjusting unit, and brightness adjusting unit comprises inquiry subelement further and regulates subelement.The brightness regulation that prestored in brightness adjusting unit table, the detecting distance that inquiry subelement can obtain according to range sensor inquires about corresponding luminance factor from this table, regulates subelement to regulate the brightness of local terminal LED dot array module edge LED again according to this luminance factor.Explanation about LED dot array module refers to the relevant record of a upper embodiment, repeats no more here.
This even number LED dot array module is by this LED of splicing composition dot matrix screen.
Preferably, be arranged in the LED dot array module of LED dot matrix screen edge, without on the edge of adjacent LED lattice module, can not range sensor be set, to save cost.
In the present embodiment, the detecting distance between LED dot array module edge and adjacent LED lattice module edge is obtained by the multiple range sensors in even number LED dot array module, this detecting distance and gauged distance compare by judging unit again, when detecting distance is less than gauged distance, subelement 2 is regulated to turn down the brightness of the LED of local terminal LED dot array module edge according to luminance factor, when detecting distance is greater than gauged distance, subelement is regulated to heighten the brightness of the LED of local terminal LED dot array module edge according to luminance factor, thus eliminate the brightness irregularities of LED dot matrix screen in stitching portion caused because the seam between LED dot array module is uneven, and improve the display effect of whole screen.
One of ordinary skill in the art will appreciate that all or part of step realized in above-described embodiment method is that the hardware that can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium mentioned can be ROM (read-only memory), disk or CD etc.
Above a kind of brightness adjusting method provided by the present invention and LED dot array module, screen are described in detail, for one of ordinary skill in the art, according to the thought of the embodiment of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (6)
1. a brightness adjusting method, is characterized in that, comprising:
Utilize the detecting distance between range sensor acquisition local terminal light emitting diode LED dot array module edge and adjacent LED lattice module edge, wherein, the quantity of described range sensor is at least 8, and the equidistant edge being arranged at the local terminal LED dot array module back side, several LED of each range sensor corresponding local terminal LED dot array module edge;
Judge the relation between described detecting distance and gauged distance;
If described detecting distance is less than described gauged distance, then turn down the brightness of the LED of local terminal LED dot array module edge;
If described detecting distance is greater than described gauged distance, then heighten the brightness of the LED of local terminal LED dot array module edge.
2. method according to claim 1, is characterized in that,
The described brightness turning down the LED of local terminal LED dot array module edge comprises:
The luminance factor corresponding according to described detecting distance inquiry, the corresponding relation of described detecting distance and luminance factor defaults in brightness regulation table;
The brightness of the LED of local terminal LED dot array module edge is turned down according to described luminance factor.
3. method according to claim 1, is characterized in that,
The described brightness heightening the LED of local terminal LED dot array module edge comprises:
The luminance factor corresponding according to described detecting distance inquiry, the corresponding relation of described detecting distance and luminance factor defaults in brightness regulation table;
The brightness of the LED of local terminal LED dot array module edge is heightened according to described luminance factor.
4. a LED dot array module, is characterized in that, comprising:
Range sensor, for obtaining the detecting distance between local terminal LED dot array module edge and adjacent LED lattice module edge, wherein, the quantity of described range sensor is at least 8, and the equidistant edge being arranged at the local terminal LED dot array module back side, several LED of each range sensor corresponding local terminal LED dot array module edge;
Judging unit, for judging the relation between described detecting distance and gauged distance;
Brightness adjusting unit, for when described detecting distance is less than described gauged distance, turns down the brightness of the LED of local terminal LED dot array module edge; Also for when described detecting distance is greater than described gauged distance, heighten the brightness of the LED of local terminal LED dot array module edge.
5. LED dot array module according to claim 4, is characterized in that, described brightness adjusting unit comprises further:
Inquiry subelement, for the luminance factor corresponding according to described detecting distance inquiry, the corresponding relation of described detecting distance and luminance factor defaults in brightness regulation table;
Regulate subelement, for regulating the brightness of the LED of local terminal LED dot array module edge according to described luminance factor.
6. a LED dot matrix screen, is characterized in that, comprising:
The LED dot array module of even number as described in any one of claim 4 to 5;
Described even number LED dot array module is by the described LED dot matrix screen of splicing composition.
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| CN201210350433.0A CN102842285B (en) | 2012-09-18 | 2012-09-18 | Brightness control method, LED-lattice module and LED-lattice screen |
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| EP3933569A1 (en) * | 2020-07-01 | 2022-01-05 | Kamara Werbe Und Kommunikations Gmbh | Display device, panel and control method for same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104332133B (en) * | 2014-05-07 | 2016-06-29 | 长春希达电子技术有限公司 | A kind of high density LED display piece luminance compensation control method |
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Also Published As
| Publication number | Publication date |
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| CN102842285A (en) | 2012-12-26 |
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