CN105719603B - A kind of RGBW data output method and device - Google Patents
A kind of RGBW data output method and device Download PDFInfo
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Abstract
The present invention is suitable for display screen drive area, provides a kind of RGBW data output method and device, the method includes：Receive the pixel value of the original RGB RGB sub-pixels of current line；The pixel value of the RGB sub-pixels is converted to the pixel value of current line red, green, blue and white RGBW sub-pixels；It is in which row in above-mentioned repetitive unit according to the pixel value of current line RGBW sub-pixels after the line number of the repetitive unit of display screen RGBW arrangement of subpixels and conversion, corresponding encoded radio is selected from the encoded radio of preset multiple encoded radios；Part pixel value is extracted from the pixel value of transformed current line RGBW sub-pixels according to the encoded radio of selection, and the pixel value of extraction is sent to the corresponding line of display screen.The embodiment of the present invention can reduce the cost of data-driven IC.
Description
Technical field
The invention belongs to display screen drive area more particularly to a kind of RGBW data output methods and device.
Background technology
Traditional LCD Technology (Liquid Crystal Display, LCD) usually utilizes red, green, blue (RGB)
Three sub-pixels show a variety of colors.Currently, in order to increase the brightness of screen, in addition to common three sub-pixels of red, green, blue
Except, it can also additionally increase a white sub-pixel to show a variety of colors.
Existing method is typically that RGB is converted into four primary red, green, blue, the in vain sub-pixel of (RGBW) and then passes through number
The RGBW sub-pixels of respective sequence are exported to the display screen of fixed RGBW arrangements according to driving IC (Integrated Circuit).But
Be, due to the RGBW of display screen arrangement mode there are many, such as Figure 1A and Figure 1B, in Figure 1A and Figure 1B, the arrangement of RGBW is suitable
Sequence is different, and the display screen of difference RGBW arrangement modes just needs different data-driven IC to export respective sequence
RGBW sub-pixels, therefore, when the arrangement mode of the RGBW of display screen there are many when, in requisition for different data-driven IC, from
And increase the cost of data-driven IC.
Invention content
An embodiment of the present invention provides a kind of RGBW data output methods, it is intended to solve existing method display screen RGBW
Arrangement mode there are many when, in requisition for different data-driven IC, the problem of cost to increase data-driven IC.
The embodiment of the present invention is achieved in that a kind of RGBW data output method, and the method includes following step：
Step 1 receives the pixel value of the original RGB RGB sub-pixels of current line；
The pixel value of the RGB sub-pixels is converted to the pixel value of current line red, green, blue and white RGBW sub-pixels by step 2；
Step 3, according to current line RGBW after the line number of the repetitive unit of display screen RGBW arrangement of subpixels and conversion
Which row the pixel value of pixel is in above-mentioned repetitive unit, is selected from the encoded radio of preset multiple encoded radios corresponding
Encoded radio；
Step 4 extracts part picture according to the encoded radio of selection from the pixel value of transformed current line RGBW sub-pixels
Element is worth, and the pixel value of extraction is sent to the corresponding line of display screen.
The another object of the embodiment of the present invention is to provide a kind of RGBW data output device, and described device includes：
Original pixel value receiving unit, the pixel value for receiving the original RGB RGB sub-pixels of current line；
Original pixel value converting unit, for the pixel value of the RGB sub-pixels to be converted to current line red, green, blue and white
The pixel value of RGBW sub-pixels；
Configuration codes determination unit is preset for according to the columns of the RGBW sub-pixels of display screen and putting in order
Configuration codes for extracting part pixel value from after conversion per the pixel value of a line RGBW sub-pixels, the configuration codes packet
Multiple encoded radios are included, the quantity of encoded radio is equal to the line number of the repetitive unit of display screen RGBW arrangement of subpixels, display screen RGBW
Every a line in the repetitive unit of arrangement of subpixels corresponds to an encoded radio；
Encoded radio selecting unit is used for according to after the line number of the repetitive unit of display screen RGBW arrangement of subpixels and conversion
Which row the pixel value of current line RGBW sub-pixels is in above-mentioned repetitive unit, from the encoded radio of preset multiple encoded radios
The middle corresponding encoded radio of selection；
Pixel value transmission unit, for the pixel value according to the encoded radio of selection from transformed current line RGBW sub-pixels
Middle extraction part pixel value, and the pixel value of extraction is sent to the corresponding line of display screen.
In embodiments of the present invention, due to can be set according to the columns of the pixel value of the sub-pixel of display screen and putting in order
The fixed configuration codes for extracting pixel value can make the pixel value of sub-pixel and the son of display screen without data-driven IC is needed to change
The number of the pixel value of pixel is identical with arrangement mode, saves data-driven IC costs.
Description of the drawings
Figure 1A is a kind of arrangement architecture schematic diagram of the RGBW sub-pixels for the display screen that the prior art provides；
Figure 1B is the arrangement architecture schematic diagram of another RGBW sub-pixels for the display screen that the prior art provides；
Fig. 2 is a kind of flow chart for RGBW data output method that first embodiment of the invention provides；
Fig. 3 is that the former RGB that first embodiment of the invention provides is converted to RGBW, and the first row sub-pixel for Figure 1A
The schematic diagram of part RGBW pixel values is extracted from the pixel value of RGBW after conversion；
Fig. 4 is the schematic diagram of caching output pixel value after Fig. 3 extraction RGBW pixel values；
Fig. 5 is a kind of structure chart for RGBW data output device that second embodiment of the invention provides.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In the embodiment of the present invention, the pixel value of the original RGB RGB sub-pixels of current line is received, by the RGB sub-pixels
Pixel value be converted to the pixel values of current line RGBW sub-pixels, according to the row of the repetitive unit of display screen RGBW arrangement of subpixels
Which row the pixel value of current line RGBW sub-pixels is in above-mentioned repetitive unit after number and conversion, from preset multiple volumes
Corresponding encoded radio is selected in the encoded radio of code value；, finally according to the encoded radio of selection from transformed current line RGBW pictures
Part pixel value is extracted in the pixel value of element, and the pixel value of extraction is sent to the corresponding line of display screen.
In order to illustrate technical solutions according to the invention, illustrated below by specific embodiment.
Embodiment one：
Fig. 2 shows a kind of flow charts for RGBW data output method that first embodiment of the invention provides, in this implementation
In example, when the arrangement mode of the RGBW sub-pixels of display screen changes, corresponding adjustment is input to the RGBW sub-pixels of display screen
Pixel value improves the utilization rate of data-driven IC, details are as follows without replacing data-driven IC：
Step S21 receives the pixel value of the original RGB RGB sub-pixels of current line.
In the step S21, the pixel value of the original RGB RGB sub-pixels of a line in a frame picture is received every time, from the
A line starts to receive, until last column of a frame picture.
The pixel value of the RGB sub-pixels is converted to the pixel of current line red, green, blue and white RGBW sub-pixels by step S22
Value.
In step S22, the pixel value of a line RGB sub-pixels in a frame picture is converted every time, is converted since the first row, directly
To last column of a frame picture.
Wherein, the pixel value by the RGB sub-pixels is converted to the pixel of current line red, green, blue and white RGBW sub-pixels
The step of value, specifically includes：
The corresponding pixel values of transformed W are determined using following formula：
Wherein, f (w) is the corresponding values of transformed W, and α value ranges are between 0 to 3；Using the rgb value before conversion as conversion
Rgb value afterwards.For example, it is assumed that in the RGB sub-pixel received, R=150, G=50, B=100, α values are 2, then basis
The value of above formula and the RGB, obtains：
That is, the pixel value (R=150, G=50, B=100) of the RGB sub-pixels to be converted to the pixel value of RGBW sub-pixels
Result be：
R=150, G=50, B=100, W=31.
Preferably, above-mentioned α values are 2.1.
Step S23 according to the columns of the RGBW sub-pixels of display screen and puts in order, and presets for every after conversion
The configuration codes of part pixel value are extracted in the pixel value of a line RGBW sub-pixels, the configuration codes include multiple encoded radios,
The quantity of encoded radio is equal to the line number of the repetitive unit of display screen RGBW arrangement of subpixels, the weight of display screen RGBW arrangement of subpixels
Every a line in multiple unit corresponds to an encoded radio.
Figure 1A is a kind of embodiment of display screen RGBW sub-pixels to put in order.In display screen RGBW put in order for
Every 4 row is as one cycle, and often the RGBW of a line puts in order and using 4 sub-pixels as one cycle, in repetitive unit
Within (4 row), the difference that puts in order of the RGBW per a line to put in order with the RGBW of other rows：The clooating sequence of the first row
It is green, blue, red, white；Putting in order for second row is white, green, blue, red；The clooating sequence of the third line is green, red, blue, white；The
Putting in order for four rows is white, green, red, blue.Certainly, in actual conditions, 2 rows or 3 row circulation primaries are may be designed in, herein
It is not construed as limiting.
Since the line number of RGBW sub-pixels in display screen is equal to the line number of RGBW sub-pixels after conversion, after columns is less than conversion
The columns of RGBW sub-pixels, and RGBW sub-pixels put in order with the sequence of transformed RGBW sub-pixels not in display screen
Together, therefore, it is necessary to preset configuration codes, could in subsequent step according to the configuration codes of setting from transformed each
According to put in order extraction number and the RGBW in display screen of the RGBW sub-pixels of display screen in the pixel value of row RGBW sub-pixels
The identical pixel value of sub-pixel number.For example, as shown in Figure 3, it is assumed that original RGB panels have 1080*3 row sub-pixels, then turn
RGBW after changing has 1080*4 row sub-pixels, and the RGBW of display screen only has 540*4 row sub-pixels, it is therefore desirable to from original adjacent
8 adjacent sub-pixels for being converted to of 6 sub-pixels in, extract the corresponding pixel value of 4 sub-pixels, that is,
It, can only be from R1G1B1W1R2G2B2W2 4 sub-pixels of extraction after R1G1B1R2G2B2 is converted to R1G1B1W1R2G2B2W2
Pixel value, others abandon.In addition, the sequence of extraction need in display screen RGBW put in order it is consistent, for example, for figure
The sequence of extraction of 1A, the first row are GBRW；The sequence of extraction of second row is WGBR；The sequence of extraction of the third line is GRBW；4th
Capable sequence of extraction is WGRB.Four behaviors one recycle, and fifth line, the sequence of extraction of the 9th row are identical as the first row, with such
It pushes away；6th row, the sequence of extraction of the tenth row are identical as the second row, and so on；7th row, the sequence of extraction of the tenth a line and
Three rows are identical, and so on；8th row, the sequence of extraction of the 12nd row are identical as fourth line, and so on.
Certainly, in addition to extracted from the 8 adjacent sub-pixels being converted to the corresponding pixel value of 4 sub-pixels it
Outside, the corresponding pixel value of 4 sub-pixels is extracted in 12 adjacent sub-pixels that can also be after being converted to RGBW formats；Or
Person extracts corresponding pixel value of 4 sub-pixels etc. in 16 adjacent sub-pixels after being converted to RGBW formats, only needs
Ensure that the pixel value number after extraction is identical as the pixel value number of display screen, and the picture of 4 sub-pixels extracted every time
Plain value differs.It is false by for extracting the corresponding pixel value of 4 sub-pixels in 12 sub-pixels adjacent after conversion
If after the pixel value for extracting 4 sub-pixels in R1G1B1W1R2G2B2W2R3G3B3W3；When the 2nd extraction, from
The pixel value of 4 sub-pixels is extracted in R2G2B2W2R3G3B3W3R4G4B4W4 again, and ensures 4 sub-pixels of the 2nd extraction
Pixel value and the pixel value of 4 sub-pixels of the 1st extraction differ；3rd time extraction when, directly from
The pixel value of 4 sub-pixels is extracted in R3G3B3W3R4G4B4W4R5G5B5W5, and ensure 4 sub-pixels of the 3rd extraction
The pixel value for 4 target sub-pixels that pixel value is extracted with the 1st time and the 2nd time is different from, other and so on.
In the step S23, configuration codes are the coding rule for the pixel value for extracting RGBW sub-pixels comprising Duo Gebian
Code value, the line number of repetitive unit of the quantity equal to display screen RGBW of encoded radio, i.e., every a line in repetitive unit correspond to one
Encoded radio.Assuming that 0 represents R (i*2-1)；1 represents R (i*2)；3 represent G (i*2-1)；4 represent G (i*2)；6 represent B (i*2-1)；
7 represent G (i*2)；9 represent W (i*2-1)；10 represent W (i*2)；I indicates the columns of RGBW sub-pixels after conversion, i=1~540.
For the first row of Figure 1A, encoded radio desirable 3,6,1,10.When i=1, so that it may with from pixel value " R1G1B1W1R2G2B2W2 "
Pixel value G1B1R2W2 is extracted by the sequence of GBRW；When i=2, so that it may to be pressed from pixel value " R3G3B3W3R4G4B4W4 "
The sequence of GBRW extracts pixel value G3B3R4W4；Other and so on, no longer specifically enumerate.The repetition list of the display screen of Figure 1A
The line number of member is 4 rows, therefore for the display screen of Figure 1A, configuration codes should include 4 encoded radios.
The description of above-mentioned configuration codes is only illustrated with the RGBW display screens of Figure 1A, in the repetition list of display screen
The line number of member, RGBW put in order when changing with number, then can set encoded radio and its number as the case may be.
Step S24, according to current line RGBW after the line number of the repetitive unit of display screen RGBW arrangement of subpixels and conversion
Which row the pixel value of sub-pixel is in above-mentioned repetitive unit, is selected from the encoded radio of preset multiple encoded radios corresponding
Encoded radio.
In the step, the pixel value of current line RGBW sub-pixels after converting is counted by counter in above-mentioned repetitive unit
In which row.Such as counter sequentially counts 00,01,10,11, wherein 00 indicates the first row in repetitive unit, 01 indicates
The second row in repetitive unit, 10 indicate the third line in repetitive unit, and 11 indicate the fourth line in repetitive unit.It is previously mentioned
The line number crossed in the quantity and repetitive unit of encoded radio is identical, if the pixel value of current line RGBW sub-pixels exists after conversion
It is in the first row in above-mentioned repetitive unit, then selects the corresponding encoded radio of the first row；If current line RGBW sub-pixels after conversion
Pixel value in above-mentioned repetitive unit be in the second row, then select the corresponding encoded radio of the second row；If current line after conversion
The pixel value of RGBW sub-pixels is in the third line in above-mentioned repetitive unit, then selects the corresponding encoded radio of the third line；If turned
The pixel value for changing rear current line RGBW sub-pixels is in fourth line in above-mentioned repetitive unit, then selects the corresponding coding of fourth line
Value.
Above-mentioned steps S23 can also be located at before step S21 or between step S21 and step S22, as long as step S23
Before step S24.
Step S25 extracts part according to the encoded radio of selection from the pixel value of transformed current line RGBW sub-pixels
Pixel value, and the pixel value of extraction is sent to the corresponding line of display screen.
The step S25 is specifically included：
Part picture is extracted from the pixel value of the transformed current line RGBW sub-pixels of step S22 according to the encoded radio of selection
Element value；
Cache the pixel value of extraction；As shown in figure 4, the pixel value of the RGBW sub-pixels of extraction is stored in sequence in buffering
In device (buffer)；
The pixel value of caching is sent to the corresponding line of display screen by channel 1, channel 2, channel 3, wherein channel 1 is logical
Road 2, channel 3 are used to export the pixel value of extraction, and each channel will not only send the pixel value of a sub-pixel, as shown in figure 4,
Channel 3 sends the pixel value R2 of sub-pixel R, also sends the pixel value B3 of sub-pixel B.
Since the line number of the RGBW sub-pixels of display screen is identical as the transformed line number of RGBW sub-pixels, the step
It is identical that the pixel value of the RGBW sub-pixels extracted in rapid S25, which is expert at and is expert at the pixel value of transformed RGBW sub-pixels,
's.For example, step S21 receives the pixel value of the original RGB RGB sub-pixels of the first row；Step S22, by the first row RGB
The pixel value of sub-pixel is converted to the pixel value of the first row RGBW sub-pixels；Step S23, according to the RGBW sub-pixels of display screen
It columns and puts in order, determines the configuration codes for extracting part pixel value from the pixel value of RGBW sub-pixels after conversion,
The configuration codes include multiple encoded radios, and the quantity of encoded radio is equal to the line number of the repetitive unit of display screen RGBW sub-pixels；
Step S24, the pixel value of current line RGBW sub-pixels is in the first row in above-mentioned repetitive unit after current conversion, selects first
The corresponding encoded radio of row；Step S25 is carried according to the encoded radio of selection from the pixel value of transformed the first row RGBW sub-pixels
Partial pixel value is taken, and the pixel value of extraction is sent to the first row of display screen.
In embodiments of the present invention, the pixel value for receiving the original RGB RGB sub-pixels of current line, by the RGB pictures
The pixel value of element is converted to the pixel value of current line RGBW sub-pixels, the columns further according to the RGBW sub-pixels of display screen and arrangement
Sequentially, the configuration codes for extracting part pixel value from the pixel value of RGBW sub-pixels after conversion are determined, further according to conversion
Line number of the pixel value of current line RGBW sub-pixels in above-mentioned repetitive unit afterwards selects corresponding encoded radio, finally according to choosing
The encoded radio selected extracts part pixel value from the pixel value of transformed current line RGBW sub-pixels, and by the pixel value of extraction
It is sent to the corresponding line of display screen.Due to can be used according to the columns and the setting that puts in order of the pixel value of the sub-pixel of display screen
In the configuration codes of extraction pixel value, the pixel value of sub-pixel and the sub-pixel of display screen can be made without data-driven IC is needed to change
Pixel value number it is identical with arrangement mode, save data-driven IC costs.
Embodiment two：
Fig. 5 shows a kind of structure chart for RGBW data output device that second embodiment of the invention provides, the RGBW numbers
It can be used for the fixed terminals such as television set, computer according to output device, can be used for other mobile terminals.For convenience of description,
It illustrates only and the relevant part of the embodiment of the present invention.
The RGBW data output device includes：Original pixel value receiving unit 51, original pixel value converting unit 52, configuration
Encode determination unit 53, encoded radio selecting unit 54, pixel value transmission unit 55.Wherein：
Original pixel value receiving unit 51, the pixel value for receiving the original RGB RGB sub-pixels of current line.The original
Beginning pixel value receiving unit 51 receives the pixel value of the original RGB RGB sub-pixels of a line in a frame picture every time, from the first row
Start to receive, until last column of a frame picture.
Original pixel value converting unit 52, for the pixel value of the RGB sub-pixels to be converted to current line red, green, blue and white
The pixel value of RGBW sub-pixels.The original pixel value converting unit 52 converts a line RGB sub-pixels in a frame picture every time
Pixel value is converted since the first row, until last column of a frame picture
Optionally, the original pixel value converting unit 52 includes：
White pixel value determining module, for determining the corresponding values of transformed W using following formula：
Wherein, f (w) is the corresponding values of transformed W, and α value ranges are between 0 to 3.Preferably, above-mentioned α values are 2.1.
Rgb pixels value determining module, for the rgb value before converting as transformed rgb value.
Configuration codes determination unit 53 is set in advance for according to the columns of the RGBW sub-pixels of display screen and putting in order
The fixed configuration codes for extracting part pixel value from the pixel value of RGBW sub-pixels after conversion, the configuration codes include more
A encoded radio, the quantity of encoded radio are equal to the line number of the repetitive unit of display screen RGBW arrangement of subpixels, display screen RGBW pictures
Every a line in the repetitive unit of element arrangement corresponds to an encoded radio.
The line number of RGBW sub-pixels is equal to the line number of RGBW sub-pixels after conversion in display screen.The repetition list of display screen RGBW
Member line number can be 2 rows or 3 rows or 4 rows etc., specifically with the relating to parameters of display screen.Wherein, above-mentioned configuration codes are to carry
Take the coding rule of the pixel value of RGBW sub-pixels comprising the quantity of multiple encoded radios, encoded radio is equal to display screen RGBW
The line number of the repetitive unit of pixel arrangement, i.e., every a line in repetitive unit correspond to an encoded radio.
Encoded radio selecting unit 54 is used for line number and the conversion of the repetitive unit according to display screen RGBW arrangement of subpixels
Which row the pixel value of current line RGBW sub-pixels is in above-mentioned repetitive unit afterwards, from the coding of preset multiple encoded radios
Corresponding encoded radio is selected in value.
Optionally, the encoded radio selecting unit 54 includes：
Counting module, for repeating list above-mentioned by the pixel value of current line RGBW sub-pixels after counter counting conversion
Which row is in member.For example, counter sequentially counts 00,01,10,11, wherein 00 expression the first row in repetitive unit, 01
Indicate the second row in repetitive unit, 10 indicate the third line in repetitive unit, and 11 indicate the fourth line in repetitive unit.
Encoded radio determining module, for selecting and be expert at corresponding encoded radio.
Pixel value transmission unit 55, for the pixel according to the encoded radio of selection from transformed current line RGBW sub-pixels
Part pixel value is extracted in value, and the pixel value of extraction is sent to the corresponding line of display screen.
Optionally, the pixel value transmission unit 55 includes：
Pixel value extraction module, for the pixel value according to the encoded radio of selection from transformed current line RGBW sub-pixels
Middle extraction part pixel value.
Pixel value cache module, the pixel value for caching extraction.In order by the pixel value of the RGBW sub-pixels of extraction
It is stored in buffer (buffer).
Pixel value output module, the corresponding line for the pixel value of caching to be sent to display screen.Specifically, by passing through
Channel 1, channel 2, channel 3 send the pixel value cached.
In second embodiment of the invention, due to that according to the columns of the pixel value of the sub-pixel of display screen and can arrange suitable
Sequence sets the configuration codes for extracting pixel value, can make the pixel value and display screen of sub-pixel without data-driven IC is needed to change
Sub-pixel pixel value number it is identical with arrangement mode, save data-driven IC costs.
It will appreciated by the skilled person that implement the method for the above embodiments be can be with
Relevant hardware is instructed to complete by program, the program can be stored in a computer read/write memory medium
In, the storage medium, such as ROM/RAM, disk, CD.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (10)
1. a kind of RGBW data output method, which is characterized in that the method includes following step：
Step 1 receives the pixel value of the original RGB RGB sub-pixels of current line；
The pixel value of the RGB sub-pixels is converted to the pixel value of current line red, green, blue and white RGBW sub-pixels by step 2；
Step 3, according to current line RGBW sub-pixels after the line number of the repetitive unit of display screen RGBW arrangement of subpixels and conversion
Pixel value which row is in above-mentioned repetitive unit, corresponding coding is selected from the encoded radio of preset multiple encoded radios
Value；
Step 4 extracts partial pixel according to the encoded radio of selection from the pixel value of transformed current line RGBW sub-pixels
It is worth, and the pixel value of extraction is sent to the corresponding line of display screen.
2. the method as described in claim 1, it is characterised in that：Further comprise the steps before the step 3：According to
The columns of the RGBW sub-pixels of display screen and put in order, preset for after conversion per the pixel of a line RGBW sub-pixels
The configuration codes of part pixel value are extracted in value, the configuration codes include multiple encoded radios, and the quantity of encoded radio is equal to display
Shield the line number of the repetitive unit of RGBW arrangement of subpixels, every a line in the repetitive unit of display screen RGBW arrangement of subpixels corresponds to
One encoded radio.
3. method as claimed in claim 2, which is characterized in that the step 2 specifically includes：
The corresponding values of transformed W are determined using following formula：
Wherein, f (w) is the corresponding values of transformed W, and α value ranges are between 0 to 3；The R is the original image of red channel
Element value；The G is the original pixel value of green channel；The B is the original pixel value of blue channel；The W is white channel
Transformed pixel value；
Using the rgb value before conversion as transformed rgb value.
4. the method as described in claims 1 or 2 or 3, which is characterized in that in the step 1, receive in a frame picture every time
The pixel value of the original RGB RGB sub-pixels of a line, receives since the first row, until last column of a frame picture；It is described
In step 2, the pixel value of a line RGB sub-pixels in a frame picture is converted every time, is converted since the first row, until a frame is drawn
The last column in face.
5. method as claimed in claim 4, which is characterized in that the step 3 specifically includes：
Which row the pixel value that current line RGBW sub-pixels after converting are counted by counter is in above-mentioned repetitive unit；
Selection and be expert at corresponding encoded radio from the encoded radio of preset multiple encoded radios.
6. a kind of RGBW data output device, which is characterized in that described device includes：
Original pixel value receiving unit, the pixel value for receiving the original RGB RGB sub-pixels of current line；
Original pixel value converting unit, for the pixel value of the RGB sub-pixels to be converted to current line red, green, blue and white RGBW
The pixel value of pixel；
Configuration codes determination unit presets and is used for for according to the columns of the RGBW sub-pixels of display screen and putting in order
The configuration codes of part pixel value are extracted from after conversion per the pixel value of a line RGBW sub-pixels, the configuration codes include more
A encoded radio, the quantity of encoded radio are equal to the line number of the repetitive unit of display screen RGBW arrangement of subpixels, display screen RGBW pictures
Every a line in the repetitive unit of element arrangement corresponds to an encoded radio；
Encoded radio selecting unit is used for according to current after the line number of the repetitive unit of display screen RGBW arrangement of subpixels and conversion
Which row the pixel value of row RGBW sub-pixels is in above-mentioned repetitive unit, is selected from the encoded radio of preset multiple encoded radios
Select corresponding encoded radio；
Pixel value transmission unit, for being carried from the pixel value of transformed current line RGBW sub-pixels according to the encoded radio of selection
Partial pixel value is taken, and the pixel value of extraction is sent to the corresponding line of display screen.
7. device as claimed in claim 6, which is characterized in that the original pixel value converting unit includes：
White pixel value determining module, for determining the corresponding values of transformed W using following formula：
Wherein, f (w) is the corresponding values of transformed W, and α value ranges are between 0 to 3；The R is the original image of red channel
Element value；The G is the original pixel value of green channel；The B is the original pixel value of blue channel；The W is white channel
Transformed pixel value；
Rgb pixels value determining module, for the rgb value before converting as transformed rgb value.
8. device as claimed in claim 6, which is characterized in that the original pixel value receiving unit receives a frame picture every time
The pixel value of the middle original RGB RGB sub-pixels of a line, receives since the first row, until last column of a frame picture；Institute
The pixel value that original pixel value converting unit converts a line RGB sub-pixels in a frame picture every time is stated, is converted since the first row,
Until last column of a frame picture.
9. device as claimed in claim 8, which is characterized in that the encoded radio selecting unit includes：
Counting module, for the pixel value by current line RGBW sub-pixels after counter counting conversion in above-mentioned repetitive unit
In which row；
Encoded radio determining module, for selecting and be expert at corresponding encoded radio.
10. device as claimed in claim 8, which is characterized in that the pixel value transmission unit includes：
Pixel value extraction module, for being carried from the pixel value of transformed current line RGBW sub-pixels according to the encoded radio of selection
Take partial pixel value；
Pixel value cache module, the pixel value for caching extraction；
Pixel value output module, the corresponding line for the pixel value of caching to be sent to display screen.
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| CN201410717925.8A CN105719603B (en) | 2014-12-01 | 2014-12-01 | A kind of RGBW data output method and device |
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| CN201410717925.8A CN105719603B (en) | 2014-12-01 | 2014-12-01 | A kind of RGBW data output method and device |
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