CN103810975A - Time schedule controller, source electrode driver, display driving circuit and display driving method - Google Patents
Time schedule controller, source electrode driver, display driving circuit and display driving method Download PDFInfo
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- CN103810975A CN103810975A CN201210458169.2A CN201210458169A CN103810975A CN 103810975 A CN103810975 A CN 103810975A CN 201210458169 A CN201210458169 A CN 201210458169A CN 103810975 A CN103810975 A CN 103810975A
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Abstract
Disclosed are a time schedule controller, a source electrode driver, a display driving circuit and a display driving method. The time schedule controller comprises a time schedule control circuit, a first scrambler and a second scrambler, wherein the time schedule control circuit provides first source electrode driving data and second source electrode driving data; the first scrambler can scramble the first source electrode driving data to generate first scrambled data according to a first random number; the second scrambler scrambles the second source electrode driving data to generate second scrambled data according to a second random number; the first random number and the second random number are different.
Description
Technical field
The invention relates to a kind of time schedule controller, source electrode driver, display driver circuit and display drive method.
Background technology
The chipset of liquid crystal display comprises time schedule controller and source electrode driver.Time schedule controller is according to the video signal generating source drive data of input, and time schedule controller also exports source drive data to source electrode driver.Source electrode driver is according to source drive data-driven display panel.But, data link (Data Link) between time schedule controller and source electrode driver easily gives off electromagnetic interference (EMI) (ElectromagneticDisturbance, EMI), and then have influence on the application such as radio wide area network (Wireless Wide Area Network, WWAN), bluetooth, military discipline frequency range.
Summary of the invention
The invention relates to a kind of time schedule controller, source electrode driver, display driver circuit and display drive method.
According to the present invention, a kind of display driver circuit is proposed.Display driver circuit comprises time schedule controller and source electrode drive circuit.Time schedule controller comprises sequential control circuit, the first scrambler (Scrambler) and the second scrambler.Sequential control circuit provides the first source drive data and the second source drive data.The first scrambler according to first random number scrambling the first source drive data to produce the first scrambled data.The second scrambler is according to second random number scrambling the second source drive data to produce the second scrambled data, and the second random number is different from the first random number.Source drive unit comprises the first descrambler (De-scrambler), the second descrambler and source electrode drive circuit.The first descrambler according to first random number descrambling the first scrambled data to produce the first source drive data, and the second descrambler according to second random number descrambling the second scrambled data to produce the second source drive data.Source electrode drive circuit is according to the first source drive data and the second source drive data-driven display panel.
According to the present invention, a kind of time schedule controller is proposed.Time schedule controller comprises sequential control circuit, the first scrambler (Scrambler) and the second scrambler.Sequential control circuit provides the first source drive data and the second source drive data.The first scrambler according to first random number scrambling the first source drive data to produce the first scrambled data.The second scrambler is according to second random number scrambling the second source drive data to produce the second scrambled data, and the second random number is different from the first random number.
According to the present invention, a kind of source electrode driver is proposed.Source electrode driver comprises descrambler (De-scrambler), multiplexer and source electrode drive circuit.Descrambler according to random number descrambling scrambled data to produce source drive data.Multiplexer is according to selecting signal to export random number to descrambler.Source electrode drive circuit is according to source drive data-driven display panel.
According to the present invention, a kind of display drive method is proposed.Display drive method, comprising: the first source drive data and the second source drive data are provided; Produce the first random number and the second random number, the second random number is different from the first random number; According to first random number scrambling the first source drive data to produce the first scrambled data, and according to second random number scrambling the second source drive data to produce the second scrambled data; Export the first scrambled data and the second scrambled data to source drive unit; According to first random number descrambling the first scrambled data to produce the first source drive data, and according to second random number descrambling the second scrambled data to produce the second source drive data; And according to the first source drive data and the second source drive data-driven display panel.
For above-mentioned and other side of the present invention is had to better understanding, special embodiment below, and coordinate appended graphicly, be described in detail below.
Accompanying drawing explanation
Fig. 1 illustrates as a kind of display driver circuit according to the first embodiment.
Fig. 2 illustrates as a kind of display driver circuit according to the second embodiment.
Fig. 3 illustrates as a kind of display driver circuit according to the 3rd embodiment.
Fig. 4 illustrates as a kind of display driver circuit according to the 3rd embodiment.
Fig. 5 illustrates as a kind of display driver circuit according to the 5th embodiment.
Fig. 6 illustrates the process flow diagram into a kind of display drive method.
[main element label declaration]
1,2,3,4,5: display driver circuit 11,21,31,41,51: time schedule controller
12,22,32,42,52: source drive unit
12 (1)～12 (N), 22 (1)～22 (N), 32 (1)～32 (N), 42 (1)～42 (N), 52 (1)～52 (N): source electrode driver
61～66: step 111: sequential control circuit
112 (1)～112 (M), 122 (1)～122 (M): tandom number generator
113 (1)～113 (N): scrambler 114 (1)～114 (N): multiplexer
121 (1)～121 (N): source electrode drive circuit 123 (1)～123 (M): descrambler
124 (1)～124 (N): multiplexer R (1)～R (M): random number
SD (1)～SD (N): source drive data SSD (1)～SSD (N): scrambled data
SEL (1)～SEL (N): select signal
Embodiment
The first embodiment
Please refer to Fig. 1, Fig. 1 illustrates as a kind of display driver circuit according to the first embodiment.Display driver circuit 1 comprises time schedule controller 11 and source drive unit 12.Time schedule controller 11 comprises that sequential control circuit 111, N organize tandom number generator, scrambler (Scrambler) 113 (1)～113 (N) and multiplexer 114 (1)～114 (N), and each group tandom number generator comprises tandom number generator 112 (1)～112 (M).Sequential control circuit 111 provides source drive data SD (1)～SD (N).Tandom number generator 112 (1)～112 (M) produces respectively random number R (1)～R (M), and export random number R (1)～R (M) to multiplexer 114 (1)～114 (N), and random number R (1)～R (M) differs from one another.For convenience of description, the first embodiment equals N as example explanation take M, and in other embodiment, M can be greater than or less than N, and random number R (1)～R (M) is also can part identical.Multiplexer 114 (1)～114 (N) is respectively according to selecting signal SEL (1)～SEL (N) output random number R (1)～R (M) to scrambler 113 (1)～113 (N).Scrambler 113 (1)～113 (N) produces scrambled data SSD (1)～SSD (N) according to random number R (1)～R (N) respectively.
Furthermore, multiplexer 114 (1) is according to selecting signal SEL (1) output random number R (1) to scrambler 113 (1), and multiplexer 114 (2) is according to selecting signal SEL (2) output random number R (2) to scrambler 113 (2).By that analogy, multiplexer 114 (N) is according to selecting signal SEL (N) output random number R (N) to scrambler 113 (N).
Furthermore, multiplexer 124 (1) is according to selecting signal SEL (1) output random number R (1) to descrambler 123 (1), and multiplexer 124 (2) is according to selecting signal SEL (2) output random number R (2) to descrambler 113 (2).By that analogy, multiplexer 124 (N) is according to selecting signal SEL (N) output random number R (N) to scrambler 123 (N).
Because scrambler 113 (1)～113 (N) produces scrambled data SSD (1)～SSD (N) according to different random number R (1)～R (N) respectively, therefore the data transmissions between time schedule controller 11 and source drive unit 12 reaches degree the most in havoc, and then reduces the risk that electromagnetic signal is disturbed.
The second embodiment
Referring to Fig. 1 and Fig. 2, Fig. 2 illustrates as a kind of display driver circuit according to the second embodiment.Display driver circuit 2 comprises time schedule controller 21 and source drive unit 22, and source drive unit 22 comprises source electrode driver 22 (1)～22 (N).Display driver circuit 2 is that with display driver circuit 1 main difference part 21 of time schedule controllers need N tandom number generator.In the time selecting signal SEL (1)～SEL (N) to equal 1～N respectively, multiplexer 114 (1)～114 (N) is exported respectively random number R (1)～R (M).Relatively, source drive unit 22 comprises source electrode driver 22 (1) to 22 (N), and each source electrode driver only needs a tandom number generator.In the time selecting signal SEL (1)～SEL (N) to equal 1～N respectively, multiplexer 124 (1)～124 (N) is exported respectively random number R (1)～R (M).Because the number that uses tandom number generator reduces, therefore can reduce production costs further to improve product competitiveness.
The 3rd embodiment
Referring to Fig. 2 and Fig. 3, Fig. 3 illustrates as a kind of display driver circuit according to the 3rd embodiment.Display driver circuit 3 comprises time schedule controller 31 and source drive unit 32, and source drive unit 32 comprises source electrode driver 32 (1)～32 (N).Display driver circuit 3 is that with display driver circuit 2 main difference parts source electrode driver 32 (1) is different from source electrode driver 22 (1).Source electrode driver 32 (1) comprises source electrode drive circuit 121 (1), tandom number generator 122 (1)～122 (2), descrambler 123 (1)～123 (2) and multiplexer 124 (1)～124 (2).Also visual practical application and elasticity is adjusted the number of tandom number generator, descrambler and multiplexer in single source electrode driver in other embodiment.
The 4th embodiment
Referring to Fig. 2 and Fig. 4, Fig. 4 illustrates as a kind of display driver circuit according to the 3rd embodiment.Display driver circuit 4 comprises time schedule controller 41 and source drive unit 42, and source drive unit 42 comprises source electrode driver 42 (1)～42 (N).Display driver circuit 4 is that with display driver circuit 2 main difference parts time schedule controller 41 is the tandom number generators 112 (1) that equal 0 replacement time schedule controller 21 with random number R 1.Accordingly, source electrode driver 42 is the tandom number generators 122 (1) that equal 0 replacement source electrode driver 22 with random number R 1.
The 5th embodiment
Referring to Fig. 2 and Fig. 5, Fig. 5 illustrates as a kind of display driver circuit according to the 5th embodiment.Display driver circuit 5 comprises time schedule controller 51 and source drive unit 52, and source drive unit 52 comprises source electrode driver 52 (1)～52 (N).Display driver circuit 5 is that with display driver circuit 2 main difference parts tandom number generator 112 (1)～112 (M) is connected to respectively scrambler 113 (1)～113 (N), and not via multiplexer 114 (1)～114 (N).Accordingly, tandom number generator 122 (1)～122 (M) is connected to respectively descrambler 123 (1)～123 (N), and not via multiplexer 124 (1)～124 (N).
Display drive method
Referring to Fig. 1 and Fig. 6, Fig. 6 illustrates the process flow diagram into a kind of display drive method.Display drive method can be applied to aforementioned display driver circuit 1, and comprises the steps.First as shown in step 61, sequential control circuit 111 provides source drive data SD (1)～SD (N).Then as shown in step 62, tandom number generator 112 (1)～112 (M) produces respectively random number R (1)～R (M), random number R (1)～R (M) completely difference or part identical.And then as shown in step 63, scrambler 113 (1)～113 (N) respectively according to random number R (1)～R (N) scrambling source drive data SD (1)～SD (N) to produce scrambled data SSD (1)～SSD (N).Then as shown in step 64, scrambler 113 (1)～113 (N) output scrambled data SSD (1)～SSD (N) is to source drive unit 12.Then as shown in step 65, descrambler 123 (1)～123 (N) respectively according to random number R (1)～R (N) descrambling scrambled data SSD (1)～SSD (N) to produce source drive data SD (1)～SD (N).And then as shown in step 66, source electrode drive circuit 121 (1)～121 (N) drives display panel according to source drive data SD (1)～SD (N) respectively.
In sum, although the present invention discloses as above with embodiment, so it is not in order to limit the present invention.Persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is when being as the criterion depending on the appended claim scope person of defining.
Claims (27)
1. a display driver circuit, comprising:
Time schedule controller, comprising:
One sequential control circuit, in order to provide one first source drive data and one second source drive data;
One first scrambler, in order to according to one first random number scrambling one first source drive data to produce one first scrambled data; And
One second scrambler, in order to according to one second random number scrambling one second source drive data to produce one second scrambled data, this second random number is different from this first random number; And
One source pole driver element, comprising:
One first descrambler, in order to according to this this first scrambled data of the first random number descrambling to produce one first source drive data;
One second descrambler, in order to according to this this second scrambled data of the second random number descrambling to produce one second source drive data; And
One source pole driving circuit, in order to according to these the first source drive data and this second source drive data-driven one display panel.
2. display driver circuit according to claim 1, wherein this time schedule controller also comprises:
One first multiplexer, in order to select signal to export this first random number to this first scrambler according to one first; And
One second multiplexer, in order to select signal to export this second random number to this second descrambler according to one second.
3. display driver circuit according to claim 2, wherein this time schedule controller also comprises:
One first tandom number generator, in order to produce this first random number, and exports this first random number to this first multiplexer; And
One second tandom number generator, in order to produce this second random number, and exports this second random number to this second multiplexer.
4. display driver circuit according to claim 3, wherein this time schedule controller also comprises:
One the 3rd tandom number generator, in order to produce one the 3rd random number, and exports the 3rd random number to this first multiplexer, and the 3rd random number is different from this first random number; And
One the 4th tandom number generator, in order to produce one the 4th random number, and exports the 4th random number to this second multiplexer, and the 4th random number is different from this second random number.
5. display driver circuit according to claim 1, wherein this source drive unit also comprises:
One first multiplexer, in order to select signal to export this first random number to this first descrambler according to one first; And
One second multiplexer, in order to select signal to export this second random number to this second descrambler according to one second.
6. display driver circuit according to claim 5, wherein this source drive unit also comprises:
One first tandom number generator, in order to produce this first random number, and exports this first random number to this first multiplexer; And
One second tandom number generator, in order to produce this second random number, and exports this second random number to this second multiplexer.
7. display driver circuit according to claim 6, wherein this source drive unit also comprises:
One the 3rd tandom number generator, in order to produce one the 3rd random number, and exports the 3rd random number to this first multiplexer, and the 3rd random number is different from this first random number; And
One the 4th tandom number generator, in order to produce one the 4th random number, and exports the 4th random number to this second multiplexer, and the 4th random number is different from this second random number.
8. display driver circuit according to claim 1, wherein this time schedule controller also comprises:
One first tandom number generator, in order to produce this first random number.
9. display driver circuit according to claim 1, wherein this first random number is 0.
10. display driver circuit according to claim 1, wherein this source drive unit also comprises:
One first tandom number generator, in order to produce this first random number; And
One second tandom number generator, in order to produce this second random number.
11. display driver circuits according to claim 1, wherein this first tandom number generator is connected to this first scrambler, and this second tandom number generator is connected to this second scrambler.
12. 1 kinds of time schedule controllers, comprising:
One sequential control circuit, in order to provide one first source drive data and one second source drive data;
One first scrambler, in order to according to one first random number scrambling one first source drive data to produce one first scrambled data; And
One second scrambler, in order to according to one second random number scrambling one second source drive data to produce one second scrambled data, this second random number is different from this first random number.
13. time schedule controllers according to claim 12, also comprise:
One first multiplexer, in order to select signal to export this first random number to this first scrambler according to one first; And
One second multiplexer, in order to select signal to export this second random number to this second descrambler according to one second.
14. time schedule controllers according to claim 12, also comprise:
One first tandom number generator, in order to produce this first random number, and exports this first random number to this first multiplexer; And
One second tandom number generator, in order to produce this second random number, and exports this second random number to this second multiplexer.
15. time schedule controllers according to claim 14, also comprise:
One the 3rd tandom number generator, in order to produce one the 3rd random number, and exports the 3rd random number to this first multiplexer, and the 3rd random number is different from this first random number; And
One the 4th tandom number generator, in order to produce one the 4th random number, and exports the 4th random number to this second multiplexer, and the 4th random number is different from this second random number.
16. time schedule controllers according to claim 12, also comprise:
One first tandom number generator, in order to produce this first random number; And
One second tandom number generator, in order to produce this second random number.
17. time schedule controllers according to claim 12, wherein this first random number is 0.
18. time schedule controllers according to claim 12, wherein this first tandom number generator is connected to this first scrambler, and this second tandom number generator is connected to this second scrambler.
19. 1 kinds of source electrode drivers, comprising:
One first descrambler, in order to according to one first random number descrambling one first scrambled data to produce one first source drive data;
One first multiplexer, in order to select signal to export this first random number to this first descrambler according to one first; And
One source pole driving circuit, in order to according to this first source drive data-driven one display panel.
20. source electrode drivers according to claim 19, also comprise:
One second descrambler, in order to according to one second random number descrambling one second scrambled data to produce one second source drive data, this second random number is different from this first random number;
One second multiplexer, in order to select signal to export this second random number to this second descrambler according to one second;
Wherein, this source electrode drive circuit is according to this this display panel of the second source drive data-driven.
21. source electrode drivers according to claim 20, also comprise:
One first tandom number generator, in order to produce this first random number, and exports this first random number to this first multiplexer; And
One second tandom number generator, in order to produce this second random number, and exports this second random number to this second multiplexer.
22. source electrode drivers according to claim 21, also comprise:
One the 3rd tandom number generator, in order to produce one the 3rd random number, and exports the 3rd random number to this first multiplexer, and the 3rd random number is different from this first random number; And
One the 4th tandom number generator, in order to produce one the 4th random number, and exports the 4th random number to this second multiplexer, and the 4th random number is different from this second random number.
23. source electrode drivers according to claim 22, also comprise:
One first tandom number generator, in order to produce this first random number.
24. source electrode drivers according to claim 19, wherein this first random number equals 0.
25. 1 kinds of display drive methods, comprising:
One first source drive data and one second source drive data are provided;
Produce one first random number and one second random number, this second random number is different from this first random number;
According to these the first random number scrambling one first source drive data to produce one first scrambled data, and according to these the second random number scrambling one second source drive data to produce one second scrambled data;
Export this first scrambled data and this second scrambled data to one source pole driver element;
According to this this first scrambled data of the first random number descrambling to produce one first source drive data, and according to this this second scrambled data of the second random number descrambling to produce one second source drive data; And
According to these the first source drive data and this second source drive data-driven one display panel.
26. display drive methods according to claim 25, also comprise:
Select signal to export this first random number and select signal to export this second random number to this second descrambler according to one second according to one first.
27. display drive methods according to claim 25, wherein this first random number equals 0.
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| WO2018223913A1 (en) * | 2017-06-09 | 2018-12-13 | 京东方科技集团股份有限公司 | Signal transmission method, transmission unit, receiving unit, and display device |
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