CN104409019A - Airborne display and method for widening color gamut of airborne display - Google Patents
Airborne display and method for widening color gamut of airborne display Download PDFInfo
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- CN104409019A CN104409019A CN201410676102.5A CN201410676102A CN104409019A CN 104409019 A CN104409019 A CN 104409019A CN 201410676102 A CN201410676102 A CN 201410676102A CN 104409019 A CN104409019 A CN 104409019A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000012545 processing Methods 0.000 claims description 30
- 238000012360 testing method Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 12
- 230000006870 function Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 238000012937 correction Methods 0.000 description 4
- 239000003086 colorant Substances 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010981 turquoise Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
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- 238000001228 spectrum Methods 0.000 description 1
- 238000001429 visible spectrum Methods 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/35—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
-
- 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
- G09G3/34—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 by control of light from an independent source
- G09G3/3406—Control of illumination source
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Computer Hardware Design (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Optics & Photonics (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The invention discloses an airborne display and a method for widening the color gamut of the airborne display. The airborne display comprises a current source, a general control board, a key light guide board, a graphic board, a backlight source and a display screen, wherein the key light guide board, the graphic board, the backlight source and the display screen are coupled with the general control board; a working power supply is provided by the current source; the key light guide board is used for inputting a working state switching signal and electrically outputting the working state switching signal via a lead; the graphic board is used for generating a graphic picture signal and receiving an outside picture signal, and overlaps or zooms the graphic picture signal and/or the outside picture signal to obtain a display signal; the backlight source is used for generating a backlight signal; the general control board is used for transmitting the display signal, the working state switching signal, the backlight signal and a self-detection signal, and comparing the backlight source signal with initial data to correct the backlight source signal; the display screen is used for receiving and displaying the display signal.
Description
Technical field
The present invention relates to field of display, particularly, relate to a kind of airborne indicator and widen the method for airborne indicator colour gamut.
Background technology
In recent years, Aeronautics and Astronautics especially rapidly increased LCD display, proposed requirements at the higher level especially to the display effect of LCD display.Colour gamut refers to the region that the color that TFT-LCD can show is formed, i.e. the TFT-LCD color gamut that can show.The color of occurring in nature visible spectrum constitutes maximum color gamut space, contains all colours that human eye can be seen in this color gamut space.International lighting association CIE (Commission International de L ' Eclairag) has formulated one for describing the method for TFT-LCD colour gamut: CIE-xy chromatic diagram.In this chromatic diagram, the gamut range that various display device can the show delta-shaped region of RGB 3 line compositions represents, leg-of-mutton area is larger, then represent that the gamut range of this display device is larger.Whether the color that display shows enriches, and the most basic determinative is exactly gamut range.Current any liquid crystal display is also all based on three primary colors imaging, but not way does not give expression to all colours of visible ray, and color gamut value, representative be exactly the Color Range that display can present.Gamut range also simply can be interpreted as the expression range of a kind of bright-dark degree of color, saturation degree and form and aspect.Separately, colour gamut is larger, and the degree of a kind of color that display screen can show is abundanter, and color is also more gorgeous.Because wide colour gamut display has the best display characteristic for pilot and operational environment, itself and various reference color can keep maximum color distortion, are unlikely the problem causing prospect and background colour color confounding effect sense.Therefore, wide color gamut displays, will become the new direction of Aeronautics and Astronautics development from now on.Along with the process of China's military modernization, the airborne display system in military equipment also an urgent demand adopts and meets the high LCD display of the colour gamut of military products standard.
At present, the airborne LCD display adopted is all after buying common commercial liquid crystals screen, according to the requirement of user, targetedly its performance is improved, the specific requirement making it meet user to propose display screen performance, and commercial liquid crystals screen cannot control display general all belonging to automatically, along with the accumulation of airborne indicator working time, in display, lamp is aging, the skew of spectrum, then there is colour cast problem in display, the uncontrollable solution of existing display is a problem so, so how to avoid colour cast to become a kind of problem needing solution badly.
Summary of the invention
The object of the invention is to overcome the colour cast usually occurred in display, provide a kind of airborne indicator, this airborne indicator can have memory and correct the function of colour cast.
To achieve these goals, the invention provides a kind of airborne indicator, this airborne indicator comprises: current source, master control plate, the keystroke light conducting plate, graphic boards, backlight and the display screen that couple mutually with described master control plate, and wherein, described current source provides working power; Described keystroke light conducting plate, for input service state switching signal, and is electrically exported described duty switching signal by wire; Described graphic boards, for generation of graphic picture signal with receive outside picture signal, and is undertaken described graphic picture signal and/or described outside picture signal superposing or convergent-divergent obtains display; Described backlight, for generation of backlight signal; Described master control plate, for transmitting described display, duty switching signal, backlight signal and Autonomous test signal, and more described backlight signal and primary data, to correct described backlight signal; Described display screen, for receiving described display and showing.
Preferably, described master control plate comprises: processor, is configured to the external storage being connected to described processor, wherein, storing initial data in described external storage, described processor contrasts according to the described backlight signal received and described primary data, to correct described backlight signal.
Preferably, described processor comprises: digital signal processor and be connected described field programmable gate array with digital signal processor.
Preferably, described graphic boards comprises: graphic processing circuit, primary processor and video processing circuits, wherein, described graphic processing circuit, be configured to be connected to described video processing circuits, to generate graphic picture signal, and described figure signal sent to described video processing circuits; Described video processing circuits, receives described graphic picture signal and outside picture signal, described graphic picture signal and/or described outside picture signal to be carried out superposing or convergent-divergent obtains described display; Described master controller, is configured to be connected to described graphic processing circuit and described video processing circuits, to control the output of described graphic processing circuit or described video processing circuits.
Preferably, described backlight comprises: multiple white lamp and multiple color lamp, wherein, multiple described white lamp is in series with the second spacing distance in a second direction and is connected to form white lamp series connection group, and multiple described white lamp series connection group to be in parallel connection with the first spacing distance in a first direction; Multiple color lamp is in series with the first spacing distance of twice in a first direction and is connected to form Color lamp string joint group, and multiple described Color lamp string joint group to be in parallel connection with the second spacing distance of twice in a second direction; Described first direction and described second direction perpendicular, and color lamp described in any one is equal to the distance of adjacent four described white lamps.
Preferably, described color lamp comprises: orange lamp, green light and blue lamp, and described orange lamp, green light and blue lamp to be in series connection with the first spacing distance of twice in a first direction successively.
Preferably, the color of two adjacent on first direction or second direction described color lamps is different.
Preferably, described master control plate, is configured to be connected to described backlight, to control the bright of described orange lamp, green light and blue lamp or to go out.
The present invention also provides a kind of method of widening airborne indicator colour gamut, and the method comprises: use the airborne indicator described in claim 8,
S101, judge described airborne indicator be in daytime pattern or night pattern;
S102, when described airborne indicator is in pattern in daytime, described master control plate controls the bright and described green light of described white lamp, orange lamp and blue lamp and goes out;
When described airborne indicator is in pattern at night, described master control plate controls the bright and described white lamp of described orange lamp, green light and blue lamp and goes out.
Preferably, described master control plate is controlled the bright of described orange lamp, green light and blue lamp by the algorithm of frequency modulation light modulation or is gone out.
By above-mentioned embodiment, the present invention, in order to improve colour gamut and the display effect of airborne indicator, adopts W (white lamp)+OGB (orange turquoise lamp) backlight, reduces mixed light ratio, promotes airborne display color gamut and display effect.This airborne indicator forms primarily of keystroke light conducting plate, graphic boards, master control plate, current source, display screen and backlight.Keystroke light conducting plate mainly realize airborne indicator brightness, contrast adjustment, daytime, night pattern switch, the function of gamut correction and display power supply switch; Graphic boards mainly realizes the function such as generation and outer video input, superposition, convergent-divergent of airborne graphic picture; Master control plate mainly realizes data transmission and the self-checking function of data bus; Power panel mainly realizes power supply supply between each feature board and the management expectancy of system power supply; Display screen mainly realizes the real-time display of the image information such as image, figure; Backlight mainly realizes high brightness requirement and night flight condition of work under pattern in airborne daytime and bends down brightness requirement.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for instructions, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is the structural representation of the embodiment that a kind of airborne indicator of the present invention is described;
Fig. 2 is the circuit connection diagram of the embodiment that backlight of the present invention is described;
Fig. 3 is the circuit connection diagram of the embodiment that multiple white lamp of the present invention is described;
Fig. 4 is the structural representation of the embodiment that graphic boards of the present invention is described.
Description of reference numerals
1 white lamp 2 color lamp.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
The invention provides a kind of airborne indicator, this airborne indicator comprises: current source, master control plate, the keystroke light conducting plate, graphic boards, backlight and the display screen that couple mutually with described master control plate, and wherein, described current source provides working power; Described keystroke light conducting plate, for input service state switching signal, and is electrically exported described duty switching signal by wire; Described graphic boards, for generation of graphic picture signal with receive outside picture signal, and is undertaken described graphic picture signal and/or described outside picture signal superposing or convergent-divergent obtains display; Described backlight, for generation of backlight signal; Described master control plate, for transmitting described display, duty switching signal, backlight signal and Autonomous test signal, and more described backlight signal and primary data, to correct described backlight signal; Described display screen, for receiving described display and showing.
By above-mentioned embodiment, the present invention, in order to improve colour gamut and the display effect of airborne indicator, adopts W (white lamp)+OGB (orange turquoise lamp) backlight, reduces mixed light ratio, promotes airborne display color gamut and display effect.This airborne indicator forms primarily of keystroke light conducting plate, graphic boards, master control plate, current source, display screen and backlight.Keystroke light conducting plate mainly realize airborne indicator brightness, contrast adjustment, daytime, night pattern switch, the function of gamut correction and display power supply switch; Graphic boards mainly realizes the function such as generation and outer video input, superposition, convergent-divergent of airborne graphic picture; Master control plate mainly realizes data transmission and the self-checking function of data bus; Power panel mainly realizes power supply supply between each feature board and the management expectancy of system power supply; Display screen mainly realizes the real-time display of the image information such as image, figure; Backlight mainly realizes high brightness requirement and night flight condition of work under pattern in airborne daytime and bends down brightness requirement.
Below in conjunction with accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing, 4 couples of the present invention are further detailed, and the resolution of display screen is in the present invention 3200 × 1600, and Diagonal Dimension is 25.6 inches, normal black display mode.Each pixel of display screen is divided into red, green, blue three sub-pixels, by vertical striped arrangement, pixel distance is 0.1905 × 0.1905mm, 256 grades of grayscale signal are provided, the LVDS interface of the color depth of 16.7M and the dual-port of true 8bit, in the diagram, PCIE, SPI are internal data process bus, and DVI, LVDS are signaling interface.
In this kind of embodiment, described master control plate comprises: processor, be configured to the external storage being connected to described processor, wherein, storing initial data in described external storage, described processor contrasts according to the described backlight signal received and described primary data, to correct described backlight signal, thus realizes the function of correction.
In this kind of embodiment, described processor comprises: digital signal processor and be connected described field programmable gate array (FPGA) with digital signal processor (DSP), this kind of processor being combined by DSP and FPGA, flexible structure, has stronger versatility.
In this kind of embodiment, described graphic boards comprises: graphic processing circuit, primary processor and video processing circuits, wherein, described graphic processing circuit, be configured to be connected to described video processing circuits, to generate graphic picture signal, and described figure signal is sent to described video processing circuits; Described video processing circuits, receives described graphic picture signal and outside picture signal, described graphic picture signal and/or described outside picture signal to be carried out superposing or convergent-divergent obtains described display; Described master controller, is configured to be connected to described graphic processing circuit and described video processing circuits, to control the output of described graphic processing circuit or described video processing circuits.
In this kind of embodiment, described backlight comprises: multiple white lamp 1 and multiple color lamp 2, wherein, multiple described white lamp 1 is in series with the second spacing distance in a second direction and is connected to form white lamp 1 series connection group, and multiple described white lamp 1 series connection group to be in parallel connection with the first spacing distance in a first direction; Multiple color lamp 2 is in series with the first spacing distance of twice in a first direction and is connected to form color lamp 2 series connection group, and multiple described color lamp 2 series connection group to be in parallel connection with the second spacing distance of twice in a second direction; Described first direction and described second direction perpendicular, and color lamp 2 described in any one is equal to the distance of four adjacent described white lamps 1.
By above-mentioned embodiment, backlight of the present invention significantly reduces the design difficulty of airborne indicator night viewing compatible and the complexity of assembly technology, improve the reliability of airborne indicator, serviceable life and colour gamut, and there is simple, easy to connect, the easy assembling of circuit structure, feature that efficiency is high.
In this kind of embodiment, described color lamp 2 comprises: orange lamp, green light and blue lamp, and described orange lamp, green light and blue lamp to be in series connection with the first spacing distance of twice in a first direction successively.
In this kind of embodiment, the color of two adjacent on first direction or second direction described color lamps 2 is different, wherein, X is the distance between adjacent 2 LEDs white lamp 1 horizontal ordinate, Y is the distance between adjacent 2 LEDs white lamp 1 ordinate (namely as on the y direction in Fig. 1), x be LED color lamp 2 connect with the white lamp 1 of LED group place straight line in the direction of the x axis between distance, y be LED color lamp 2 connect with the white lamp 1 of adjacent LED group place straight line in the y-axis direction between distance.According to the requirement of patent, the white lamp 1 of LED, LED color lamp 2, on x-axis direction, y-axis direction, are equidistant arrangement respectively, and meet x=X/2, y=Y/2.The arrangement of every a line, each row has similarity, as shown in Figure 2.By some requirement above-mentioned, LED array can meet the requirement of airborne indicator night viewing compatible.
Adopt series-parallel connection mode, i.e. parallel way after first series connection, and constant-current driving LED lamp string, have the advantages that reliability is high, circuit structure is simple, easy to connect, efficiency is high, be particularly suitable for the connection of the LED of most amount.
In this kind of embodiment, the quantity of the white lamp 1 in described white lamp 1 series connection group is 4, and the quantity of described white lamp 1 series connection group is 8; The quantity of the color lamp 2 in described color lamp 2 series connection group is 4, and the quantity of described color lamp 2 series connection group is 4.As shown in Figure 1, such connected mode is simple, just can meet needs of the present invention for its concrete connection layout.
LED series connection determines the voltage of the LED string required for driving, and LED parallel connection determines the electric current of the LED required for driving, and the product of the two is the general power of LED array.As shown in Figure 1.It is one group that the white lamp 1 of LED and LED color lamp 2 are all gone here and there with 4, forms LED array.Wherein, the white lamp 14 of LED goes here and there 8 also, and amount to 32, label is divided into D1 ~ D32; Color lamp 24 goes here and there 4 also, and amount to 16, label is respectively C1 ~ C16.The driving voltage of the white lamp 1 of every LEDs is 3V, electric current 20mA, then required driving voltage gone here and there by the white lamp of LED 1 is U
w=4 × 3V=12V, total white lamp 1 drive current is I
w=8 × 20mA=160mA.The driving voltage of every LEDs color lamp 2 is 3V, electric current 20mA, then required driving voltage gone here and there by LED color lamp 2 is U
c=4 × 3V=12V, total color lamp 2 drive current is I
c=4 × 20mA=80mA.According to the connection in series-parallel relation of LED array, then the total voltage of whole LED array is U=12V, and total current is I=160mA × 80mA=240mA.
In this kind of embodiment, the model of described white lamp 1 is NSSW064AT, and this is a kind of model of LED white-light emitting diode, and its working stability, illumination effect is good.
In this kind of embodiment, the model of described color lamp 2 is WE-SL633NBDGUO4-B1, is the model that a kind of LED sends out glory diode, its working stability, and illumination effect is good, and low in energy consumption, is suitable for integrated.
In a kind of back light source system of the present invention, this back light source system comprises: according to above-mentioned backlight and diffuser, described diffuser is covered on the outside surface of multiple described white lamps 1 or multiple described color lamp 2, by such mode to increase radiation of light source area, improve the light source utilization rate of backlight, the effect of diffuser is the lamp diffusion angle revising LED, and formation homogeneity is good, the secondary souce of chroma stability.
In this kind of embodiment, described master control plate, is configured to be connected to described backlight, to control the bright of described orange lamp, green light and blue lamp or to go out.
The invention provides a kind of method of widening airborne indicator colour gamut, the method comprises: use the airborne indicator described in claim 8,
S101, judge described airborne indicator be in daytime pattern or night pattern;
S102, when described airborne indicator is in pattern in daytime, described master control plate controls the bright and described green light of described white lamp, orange lamp and blue lamp and goes out;
When described airborne indicator is in pattern at night, described master control plate controls the bright and described white lamp of described orange lamp, green light and blue lamp and goes out.
In this kind of embodiment, described master control plate is controlled the bright of described orange lamp, green light and blue lamp by the algorithm of frequency modulation light modulation or is gone out.
Workflow of the present invention is:
After this airborne indicator connects cable, by keyswitch on keystroke light conducting plate, realize power up function; After start, after display system initialization, graphic boards, from the airborne display frame produced required for operator, carries out communication by master control plate and outside, in real time by data message display on a display screen; Meanwhile, operating personnel can, according to mode of operation, keystroke light conducting plate be selected in pattern in daytime, also at night flight work pattern.During this period, operating personnel can by the brightness on keystroke light conducting plate+, the brightness of this airborne indicator backlight of brightness-regulate or by the contrast on keystroke light conducting plate+, the contrast of contrast-adjustment display frame, to meet operating personnel's vision requirement.Along with the accumulation of airborne indicator working time, in backlight, LED is aging, spectral shift, and colour cast problem then appears in display.Because this display has memory function, the operating status record that operator uses the earliest can be got off, therefore, by correcting key on keystroke light conducting plate, by the color cast correction of display to display effect before meeting operator, a key can be realized and correct.
By above-mentioned embodiment, the present invention improves the colour gamut of narrow colour gamut display screen in COTS product, gamut range is promoted to 70% from 40%, and airborne indicator product reduces mixed light ratio and improves display quality simultaneously, improves colour gamut and the display effect of airborne LCD display.In addition, this airborne indicator has memory and a key calibration function, is very easy to operating personnel, for operating personnel provide good display effect, has the advantages that method for designing is simple, cost is low and reliability is high.
As aim of the present invention, display of the present invention comprise the pattern of working by day and night mode of operation.By day under operational mode state, LED white lamp 1 array, LED orange lamp and the blue lamp array operation of LED, with the requirement of airborne LCD display high brightness under the satisfied pattern that works by day; Under night mode of operation, LED white lamp 1 array is closed, orange lamp, green light, blue lamp array operation, by orange lamp, green light, blue lamp array colour mixture in proportion, to meet the requirement of airborne LCD display night viewing compatible under night mode of operation, its spoke brightness value is made to be less than 2.2 × 10-9W/cm2sr (white).
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out combination in any between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. an airborne indicator, is characterized in that, this airborne indicator comprises: current source, master control plate, the keystroke light conducting plate, graphic boards, backlight and the display screen that couple mutually with described master control plate, and wherein, described current source provides working power;
Described keystroke light conducting plate, for input service state switching signal, and is electrically exported described duty switching signal by wire;
Described graphic boards, for generation of graphic picture signal with receive outside picture signal, and is undertaken described graphic picture signal and/or described outside picture signal superposing or convergent-divergent obtains display;
Described backlight, for generation of backlight signal;
Described master control plate, for transmitting described display, duty switching signal, backlight signal and Autonomous test signal, and more described backlight signal and primary data, to correct described backlight signal;
Described display screen, for receiving described display and showing.
2. airborne indicator according to claim 1, it is characterized in that, described master control plate comprises: processor, be configured to the external storage being connected to described processor, wherein, storing initial data in described external storage, described processor contrasts according to the described backlight signal received and described primary data, to correct described backlight signal.
3. airborne indicator according to claim 2, is characterized in that, described processor comprises: digital signal processor and be connected described field programmable gate array with digital signal processor.
4. airborne indicator according to claim 1, is characterized in that, described graphic boards comprises: graphic processing circuit, primary processor and video processing circuits, wherein,
Described graphic processing circuit, is configured to be connected to described video processing circuits, to generate graphic picture signal, and described figure signal is sent to described video processing circuits;
Described video processing circuits, receives described graphic picture signal and outside picture signal, described graphic picture signal and/or described outside picture signal to be carried out superposing or convergent-divergent obtains described display;
Described master controller, is configured to be connected to described graphic processing circuit and described video processing circuits, to control the output of described graphic processing circuit or described video processing circuits.
5. airborne indicator according to claim 1, it is characterized in that, described backlight comprises: multiple white lamp and multiple color lamp, wherein, multiple described white lamp is in series with the second spacing distance in a second direction and is connected to form white lamp series connection group, and multiple described white lamp series connection group to be in parallel connection with the first spacing distance in a first direction; Multiple color lamp is in series with the first spacing distance of twice in a first direction and is connected to form Color lamp string joint group, and multiple described Color lamp string joint group to be in parallel connection with the second spacing distance of twice in a second direction; Described first direction and described second direction perpendicular, and color lamp described in any one is equal to the distance of adjacent four described white lamps.
6. backlight according to claim 5, is characterized in that, described color lamp comprises: orange lamp, green light and blue lamp, and described orange lamp, green light and blue lamp to be in series connection with the first spacing distance of twice in a first direction successively.
7. backlight according to claim 6, is characterized in that, the color of two described color lamps adjacent on first direction or second direction is different.
8. airborne indicator according to claim 7, is characterized in that, described master control plate, is configured to be connected to described backlight, to control the bright of described orange lamp, green light and blue lamp or to go out.
9. widen a method for airborne indicator colour gamut, it is characterized in that, the method comprises: use the airborne indicator described in claim 8,
S101, judge described airborne indicator be in daytime pattern or night pattern;
S102, when described airborne indicator is in pattern in daytime, described master control plate controls the bright and described green light of described white lamp, orange lamp and blue lamp and goes out;
When described airborne indicator is in pattern at night, described master control plate controls the bright and described white lamp of described orange lamp, green light and blue lamp and goes out.
10. method of widening airborne indicator colour gamut according to claim 9, is characterized in that, described master control plate is controlled the bright of described orange lamp, green light and blue lamp by the algorithm of frequency modulation light modulation or gone out.
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