CN106328036A - Display equipment and gray-scale extension method applicable to same - Google Patents
Display equipment and gray-scale extension method applicable to same Download PDFInfo
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- CN106328036A CN106328036A CN201610739437.6A CN201610739437A CN106328036A CN 106328036 A CN106328036 A CN 106328036A CN 201610739437 A CN201610739437 A CN 201610739437A CN 106328036 A CN106328036 A CN 106328036A
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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
- G09G3/2007—Display of intermediate tones
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- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Controls And Circuits For Display Device (AREA)
- Processing Of Color Television Signals (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses display equipment and a gray-scale extension method applicable to the same. The display equipment comprises a display card, a decoding unit connected with the display card and used for decoding video signals, a gray-scale correction unit connected with the decoding unit and used for processing gray-scale data, a recombination unit connected with the gray-scale correction unit and used for recombining extended bit widths, a brightness balance unit connected with the recombination unit and the gray-scale correction unit respectively and used for balancing the brightness, a frame rate control unit connected with the brightness balance unit and used for outputting the extended gray scale, a coding unit connected with the frame rate control unit and used for coding video signals, and a display unit connected with the coding unit and used for displaying. The display equipment and the gray-scale extension method have the advantages that a relatively high gray-scale extension number (e.g., 20 bits) can be realized, the equipment and the method can be applied to the scene that the bit width of the display unit is relatively low (e.g., 6 bits), and the abnormal situations of flicker and the like of display pictures can be greatly reduced.
Description
Technical field
The present invention relates to a kind of display device and be applicable to the GTG extended method of display device, belonging to display control technology
Field.
Background technology
Showing field at medical image, small gray difference, it is possible to diagnostic result is produced strong influence, is just deposited
Probability in mistaken diagnosis.Therefore, the Professional display monitor of medical field must possess the ability of display more ash exponent number, the most first
The professional medical display bit wide entered can reach 16, i.e. display possesses display 216Plant the ability of GTG.
Owing to the display panels bit wide of main flow is mostly 8,10, how to show more with the panel of relatively low-bit width
Many grey exponent numbers, this is one of contradiction of initially facing of field of display.Frame per second controls the proposition of technology and well solves this
Individual contradiction, is used by most of display producers the most.
It is that the persistence of vision utilizing human eye is to reach the purpose of GTG extension that frame per second controls technology.In required extension bit wide relatively
In the case of high (such as 20), or display unit bit wide relatively low (such as 6), frame per second controls technology " cannot deceive " human eye, thus
Make display that the abnormal conditions such as flicker, noise to occur.How cracking this type of abnormal problem is the current bottleneck of frame per second control technology
Place, is also the difficult point place of display GTG extension.
Summary of the invention
Present invention is primarily targeted at, overcome deficiency of the prior art, it is provided that a kind of display device and be applicable to show
Show the GTG extended method of equipment, be possible not only to realize higher gray scale spreading number (such as 20), and can be applicable to display unit position
The scene of wide relatively low (such as 6), and can significantly reduce the abnormal conditions such as the flicker of display picture, have the utilization in industry
It is worth.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of display device, including video card, is connected with video card and is used for the decoding unit that video signal decodes, with decoding unit phase
Connect and be used for processing the gray scale correction unit of luma data, be connected with gray scale correction unit and be used for by the bit wide that expands again
The recomposition unit of combination, is respectively connected with recomposition unit and gray scale correction unit and for making the luminance proportion list of brightness uniformity
Unit, is connected with luminance proportion unit and is used for exporting the frame per second control unit of GTG after extension, being connected also with frame per second control unit
For the coding unit of video signal coding, and it is connected with coding unit and is used for the display unit shown.
Further: described display unit is greyscale display or color display.
The present invention also provides for a kind of GTG extended method being applicable to display device, comprises the following steps:
1) video signal that video card exports is decoded as the rgb signal that bit wide is M position by decoding unit, and wherein R, G, B signal are respectively M
Position, M is the bit wide of video card；
2) gray scale correction unit is tabled look-up inside circuit and is corrected the R of M position, G, B signal respectively, and data after output calibration,
After correction, R, G, the bit wide of B signal are respectively M+N position, and wherein N is to need extendible bit wide；
3) gray scale correction unit exports the R of low M+N-K position, G, B signal to recomposition unit respectively, and recomposition unit is to 3 M+N-K positions
R, G, B signal carry out data recombination according to restructuring condition and export the recombination data of 3 M+N-K positions, wherein K is display unit
Bit wide；
4) the luminance proportion unit recombination data to 3 M+N-K positions from recomposition unit, replaces respectively according to being uniformly distributed principle
Change R, G, the low M+N-K position of B signal after the M+N bit correction of gray scale correction unit output, and be uniformly distributed on Spatial Dimension；
5) frame per second control unit output expression 2M+NPlanting the RGB data of GTG, its bit wide is K；
6) after the RGB data that frame per second control unit exports is encoded by coding unit, output shows to display unit.
Further: the restructuring condition in described step 3) is, if gray scale correction unit export respectively low M+N-K position R,
G, B signal are respectively a, b, c, and the recombination data setting 3 M+N-K positions is respectively x, y, z, it is desirable to x, y, z meets three below
Condition,
Condition one: x+y+z=a+b+c,
Condition two: x=2M+N-KOr x=0,
Condition three: y=2M+N-KOr y=0.
Further: the principle that is uniformly distributed in described step 4) is, in the school, M+N position replacing the output of gray scale correction unit
Just after R, G, B signal low M+N-K position time, by numerical value be uniformly distributed avoid identical numerical value the most adjacent.
Compared with prior art, the invention have the advantages that:
A kind of display device that the present invention provides and be applicable to the GTG extended method of display device, by video card, decoding unit,
Gray scale correction unit, recomposition unit, luminance proportion unit, frame per second control unit, coding unit and the setting of display unit, wherein
Through recomposition unit, the bit wide expanded reconfigured output, then carry out brightness uniformity through luminance proportion unit, and use
GTG after the output extension of frame per second control unit, is possible not only to realize higher gray scale spreading number (such as 20), and can be applicable to display
The scene of unit bit wide relatively low (such as 6)；The low M+N-K bit value being additionally, since RGB data is 0 or 2M+N-KTime, through frame per second
After control unit processes, numerical value will not change, and therefore only has a sub-pixel in three sub-pixels R, G, B of RGB data with frame
Rate generation change in value, thus can significantly reduce the flickering of picture.
Foregoing is only the general introduction of technical solution of the present invention, in order to be better understood upon the technological means of the present invention, under
Face combines accompanying drawing, and the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of display device of the present invention；
Fig. 2 is the flow chart of a kind of GTG extended method being applicable to display device of the present invention.
Detailed description of the invention
Below in conjunction with Figure of description, the present invention is further illustrated.
The present invention provides a kind of display device, as it is shown in figure 1, include video card, is connected with video card and is used for video signal solution
The decoding unit of code, is connected with decoding unit and is used for processing the gray scale correction unit of luma data, with gray scale correction unit phase
Connect and be used for the recomposition unit bit wide expanded reconfigured, be respectively connected with recomposition unit and gray scale correction unit and use
In making the luminance proportion unit of brightness uniformity, after being connected with luminance proportion unit and being used for exporting extension, the frame per second of GTG controls
Unit, is connected with frame per second control unit and is used for the coding unit that video signal encodes, and be connected with coding unit and be used for
The display unit of display；Wherein display unit is greyscale display or color display.
The present invention also provides for a kind of GTG extended method being applicable to display device, as in figure 2 it is shown, comprise the following steps:
1) video signal that video card exports is decoded as the rgb signal that bit wide is M position by decoding unit, and wherein R, G, B signal are respectively M
Position, M is the bit wide of video card.
2) gray scale correction unit is tabled look-up inside circuit and is corrected the R of M position, G, B signal respectively, and number after output calibration
According to, after correction, R, G, the bit wide of B signal are respectively M+N position, and wherein N is to need extendible bit wide.
3) gray scale correction unit exports the R of low M+N-K position, G, B signal to recomposition unit respectively, and recomposition unit is to 3 M+
The R of N-K position, G, B signal carry out data recombination according to restructuring condition and export the recombination data of 3 M+N-K positions, and wherein K is aobvious
Show the bit wide of unit；
Described restructuring condition is, if gray scale correction unit exports the R of low M+N-K position respectively, G, B signal are respectively a, b, c, and set
The recombination data of 3 M+N-K positions is respectively x, y, z, it is desirable to x, y, z meets three below condition,
Condition one: x+y+z=a+b+c,
Condition two: x=2M+N-KOr x=0,
Condition three: y=2M+N-KOr y=0.
4) the luminance proportion unit recombination data to 3 M+N-K positions from recomposition unit, divides according to being uniformly distributed principle
Not Ti Huan R, G, the low M+N-K position of B signal after the M+N bit correction of gray scale correction unit output, and uniformly divide on Spatial Dimension
Cloth；Wherein, being uniformly distributed principle is, R, G, the low M+N-K of B signal after the M+N bit correction replacing the output of gray scale correction unit
Position time, by numerical value be uniformly distributed avoid identical numerical value the most adjacent.
5) frame per second control unit output expression 2M+NPlanting the RGB data of GTG, its bit wide is K.
6) after the RGB data that frame per second control unit exports is encoded by coding unit, output shows to display unit.
Being output as M=8 position with video card, the bit wide needing extension is N=12 position, and display unit is to the present invention as a example by K=8 position
The GTG extended method being applicable to display device be described in detail.
1) video card output color depth is the video signal of 8, exports rgb signal after decoded unit, and wherein R, G, B signal are each
It it is 8.
2) output of tabling look-up inside circuit of gray scale correction unit meets the rgb signal of target call, and wherein R, G, B signal are each
It it is 20.
3) gray scale correction unit output R, G, B signal low 12 to recomposition unit, it is assumed that low 12 difference of rgb signal
For a=4000, b=2000, c=1000, the data after restructuring are x, y, z, recombinate according to following condition,
Condition one: x+y+z=a+b+c,
Condition two: x=2M+N-KOr x=0,
Condition three: y=2M+N-KOr y=0；
Then the data after restructuring are x=0, y=4096, z=2904.
4) luminance proportion unit receive the most-significant byte of rgb signal of gray scale correction unit output and the x of recomposition unit output,
Y, z data, generate the RGB data being respectively 20.
Specifically, it is assumed that the most-significant byte of the rgb signal of gray scale correction unit output is respectively X=50, Y=100, Z=200, root
Being uniformly distributed principle according to x, y, z, 20 outputs of luminance proportion unit are respectively,
R=X*212+ y,
G= Y*212+ x,
B= Z*212+z。
5) frame per second control unit receives luminance proportion unit and exports the RGB data of each 20, and exports the RGB number of each 8
According to.Owing to R, low 12 of the G-signal of input are 0, therefore R=X=50, G=Y=100 keep constant；The numerical value of B is in Z and Z+1 two number
Changing with frame per second in value, variable cycle is 4096 frames, wherein B value be the frame number of Z+1 be 2904 frames (z values), value is Z
Frame number be 1192 frames (values of 4096-z).
6) output of coding unit received frame rate control unit RGB data and after encoding output show to display unit
Show.
The ultimate principle of the present invention, principal character and advantage have more than been shown and described.The technical staff of the industry should
Understanding, the present invention is not restricted to the described embodiments, and the simply explanation present invention's described in above-described embodiment and description is former
Reason, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes and improvements
Both fall within scope of the claimed invention.Claimed scope is by appending claims and equivalent circle thereof
Fixed.
Claims (5)
1. a display device, it is characterised in that: include video card, be connected with video card and be used for the decoding list that video signal decodes
Unit, is connected with decoding unit and is used for processing the gray scale correction unit of luma data, is connected with gray scale correction unit and be used for will
The recomposition unit that the bit wide expanded reconfigures, is respectively connected with recomposition unit and gray scale correction unit and for making brightness equal
Homogenized luminance proportion unit, is connected with luminance proportion unit and is used for exporting the frame per second control unit of GTG after extension, with frame
Rate control unit is connected and is used for the coding unit of video signal coding, and is connected with coding unit and is used for the display shown
Unit.
A kind of display device the most according to claim 1, it is characterised in that: described display unit is greyscale display or coloured silk
Color display.
3. the GTG extended method being applicable to display device, it is characterised in that comprise the following steps:
1) video signal that video card exports is decoded as the rgb signal that bit wide is M position by decoding unit, and wherein R, G, B signal are respectively M
Position, M is the bit wide of video card；
2) gray scale correction unit is tabled look-up inside circuit and is corrected the R of M position, G, B signal respectively, and data after output calibration,
After correction, R, G, the bit wide of B signal are respectively M+N position, and wherein N is to need extendible bit wide；
3) gray scale correction unit exports the R of low M+N-K position, G, B signal to recomposition unit respectively, and recomposition unit is to 3 M+N-K positions
R, G, B signal carry out data recombination according to restructuring condition and export the recombination data of 3 M+N-K positions, wherein K is display unit
Bit wide；
4) the luminance proportion unit recombination data to 3 M+N-K positions from recomposition unit, replaces respectively according to being uniformly distributed principle
Change R, G, the low M+N-K position of B signal after the M+N bit correction of gray scale correction unit output, and be uniformly distributed on Spatial Dimension；
5) frame per second control unit output expression 2M+NPlanting the RGB data of GTG, its bit wide is K；
6) after the RGB data that frame per second control unit exports is encoded by coding unit, output shows to display unit.
A kind of GTG extended method being applicable to display device the most according to claim 3, it is characterised in that: described step
3) the restructuring condition in is, if gray scale correction unit exports the R of low M+N-K position respectively, G, B signal are respectively a, b, c, and set 3
The recombination data of individual M+N-K position is respectively x, y, z, it is desirable to x, y, z meets three below condition,
Condition one: x+y+z=a+b+c,
Condition two: x=2M+N-KOr x=0,
Condition three: y=2M+N-KOr y=0.
A kind of GTG extended method being applicable to display device the most according to claim 3, it is characterised in that: described step
4) principle that is uniformly distributed in is, R, G, the low M+N-K position of B signal after the M+N bit correction replacing the output of gray scale correction unit
Time, by numerical value be uniformly distributed avoid identical numerical value the most adjacent.
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| CN106328036B (en) | 2019-06-04 |
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