CN102820019A - Analogous image signal adjusting module and analogous image signal adjusting method - Google Patents
Analogous image signal adjusting module and analogous image signal adjusting method Download PDFInfo
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- CN102820019A CN102820019A CN2012101970665A CN201210197066A CN102820019A CN 102820019 A CN102820019 A CN 102820019A CN 2012101970665 A CN2012101970665 A CN 2012101970665A CN 201210197066 A CN201210197066 A CN 201210197066A CN 102820019 A CN102820019 A CN 102820019A
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Abstract
The invention discloses an analogous image signal adjusting module and an analogous image signal adjusting method. The analogous image signal adjusting module comprises a receiving unit, a memory unit and a processing unit, wherein the receiving unit is used for selectively receiving at least one of a first analogous image signal, a second analogous image signal and a third analogous image signal according to a preset condition, so as to generate a plurality of original analogous image signals; the plurality of original analogous image signals are stored by the memory unit coupled with the receiving unit; the processing unit coupled with the memory unit and the receiving unit is used for comparing the plurality of original analogous image signals with a time pulse signal so as to determine a phase difference message; and the processing unit is further used for controlling the receiving unit to delay at least one of the first analogous image signal, the second analogous image signal and the third analogous image signal according to the phase difference message, so as to adjust the non-synchronous original analogous image signals to be relatively synchronous analogous image signals. Thus, the situation of mismatched color of a display frame is improved.
Description
Technical field
The present invention refers to a kind of can nonsynchronous plural analogy signal of video signal being adjusted near synchronous relatively analogy signal of video signal adjustment module and analogy signal of video signal method of adjustment especially about a kind of analogy signal of video signal adjustment module and analogy signal of video signal method of adjustment.
Background technology
Along with the progress of image processing technique, display device is more and more universal.Yet; When the received plural analogy signal of video signal of display device has the nonsynchronous situation of phase place; If do not add the phase differential between adjustment analogy signal of video signal; Promptly do not convert the analogy signal of video signal into the digital image signal and carry out the follow-up signal processing, then the last picture displayed of display device may produce the situation of colour cast, influence the picture that the user watches.
Summary of the invention
Therefore; One of the object of the invention is to provide a kind of can be adjusted into analogy signal of video signal adjustment module and the analogy signal of video signal method of adjustment of plural number near synchronous relatively analogy signal of video signal with the nonsynchronous analogy signal of video signal of plural number, to improve the situation of display picture colour cast.
According to an embodiment, analogy signal of video signal adjustment module of the present invention comprises receiving element, mnemon and processing unit.Receiving element comprises first passage, second channel and third channel; First passage, second channel and third channel be respectively in order to receiving the first kind than signal of video signal, the second analogy signal of video signal and the 3rd analogy signal of video signal, and first passage and third channel can optionally be closed respectively.Receiving element under corresponding clock signal, according to predetermined condition optionally receive the first kind than signal of video signal, the second analogy signal of video signal and the 3rd analogy signal of video signal at least one of them, compare signal of video signal to produce plural primitive class.Mnemon couples receiving element, compares signal of video signal to store plural primitive class.Processing unit couples mnemon and receiving element; The more plural primitive class of processing unit than signal of video signal and corresponding clock signal with decision phase differential information, and the first kind that postpones according to phase differential information control receiving element to be received than signal of video signal, the second analogy signal of video signal and the 3rd analogy signal of video signal at least one of them.
In an embodiment; This predetermined condition is: this receiving element is optionally closed this first passage and first is mixed the analogy signal of video signal with what produce that this second analogy signal of video signal and the 3rd analogy signal of video signal mix; This receiving element is optionally closed this third channel and second is mixed the analogy signal of video signal to produce this first kind than what signal of video signal and this second analogy signal of video signal mixed; And this receiving element optionally closes this first passage and this third channel receiving this second analogy signal of video signal, and this first mixed analogy signal of video signal, this second mixes analogy signal of video signal and this second analogy signal of video signal and should the plural number primitive class comprise than signal of video signal.
In a specific embodiment; Relatively this first mixes analogy signal of video signal and this clock signal to obtain first phase differential to this processing unit; Relatively this second mixes analogy signal of video signal and this clock signal to obtain second phase differential to this processing unit; Also relatively this second analogy signal of video signal and this clock signal are to obtain the third phase potential difference for this processing unit, and this phase differential information comprises this first phase differential, this second phase differential and this third phase potential difference.
In a preferred embodiment; This processing unit relatively this first phase differential, this second phase differential corresponds respectively to first delay parameter, second delay parameter and three delay parameter of this first kind than signal of video signal, this second analogy signal of video signal and the 3rd analogy signal of video signal with this third phase potential difference with generation, and according to this first delay parameter, this second delay parameter and the 3rd delay parameter postpone this first kind that this receiving element received than signal of video signal, this second analogy signal of video signal and the 3rd analogy signal of video signal at least one of them.
According to another embodiment; Analogy signal of video signal method of adjustment of the present invention is applied to analogy signal of video signal adjustment module; Analogy signal of video signal adjustment module comprises first passage, second channel and third channel; First passage, second channel and third channel are respectively in order to receive the first kind than signal of video signal, the second analogy signal of video signal and the 3rd analogy signal of video signal; And first passage and third channel can optionally be closed respectively, and analogy signal of video signal method of adjustment comprises: one of them compares signal of video signal to produce plural primitive class at least with the 3rd analogy signal of video signal than signal of video signal, the second analogy signal of video signal under corresponding clock signal, optionally to receive the first kind by first passage, second channel with third channel according to predetermined condition; More plural primitive class than signal of video signal and corresponding clock signal with decision phase differential information; And according to the phase differential information postpone first passage, second channel and third channel institute respectively reception the first kind than signal of video signal, the second analogy signal of video signal and the 3rd analogy signal of video signal at least one of them.
As further optional technical scheme; Step (1) comprises: optionally close this first passage and first mix the analogy signal of video signal with what produce that this second analogy signal of video signal and the 3rd analogy signal of video signal mix; Optionally close this third channel and second mix the analogy signal of video signal than what signal of video signal and this second analogy signal of video signal mixed to produce this first kind; And optionally close this first passage and this third channel receiving this second analogy signal of video signal, this first mixed analogy signal of video signal, this second mixes analogy signal of video signal and this second analogy signal of video signal and should the plural number primitive class comprise than signal of video signal.
As further optional technical scheme; Step (2) comprises: relatively this first mixing analogy signal of video signal and this clock signal are to obtain first phase differential; Relatively this second mixing analogy signal of video signal and this clock signal are to obtain second phase differential; And relatively this second analogy signal of video signal and this clock signal are to obtain the third phase potential difference, and this phase differential information comprises this first phase differential, this second phase differential and this third phase potential difference.
As further optional technical scheme; Step (3) comprises: relatively this first phase differential, this second phase differential correspond respectively to first delay parameter, second delay parameter and three delay parameter of this first kind than signal of video signal, this second analogy signal of video signal and the 3rd analogy signal of video signal with this third phase potential difference with generation, and according to this first delay parameter, this second delay parameter and the 3rd delay parameter postpone this first passage, this second channel and this third channel institute respectively reception this first kind than signal of video signal, this second analogy signal of video signal and the 3rd analogy signal of video signal at least one of them.
In sum; Analogy signal of video signal adjustment module of the present invention and analogy signal of video signal method of adjustment are by the phase differential between more plural nonsynchronous analogy signal of video signal and the clock signal; And adjust the phase place of plural analogy signal of video signal; Nonsynchronous plural analogy signal of video signal being adjusted near synchronous relatively analogy signal of video signal, or reduce phase differential to each other at least.By this, can improve the situation of display picture colour cast.
Can further be understood by following specific embodiment and accompanying drawing about advantage of the present invention and spirit.
Description of drawings
Fig. 1 is the synoptic diagram of analogy signal of video signal adjustment module according to an embodiment of the invention.
Fig. 2 be according to an embodiment of the invention first mix the analogy signal of video signal synoptic diagram.
Fig. 3 be according to an embodiment of the invention second mix the analogy signal of video signal synoptic diagram.
Fig. 4 is the synoptic diagram of the second analogy signal of video signal according to an embodiment of the invention.
Fig. 5 be according to an embodiment of the invention primitive class than the synoptic diagram of signal of video signal and phase differential information.
Fig. 6 is the process flow diagram of analogy signal of video signal method of adjustment according to an embodiment of the invention.
[main element symbol description]
1 analogy signal of video signal adjustment module, 11 receiving elements
13 mnemons, 15 processing units
111 first passages, 113 second channels
115 third channel CS clock signals
MS1 first mixes analogy signal of video signal MS2 second and mixes the analogy signal of video signal
The PD1 first phase differential PD2 second phase differential
The PD3 third phase potential difference S1 first kind compares signal of video signal
The S2 second analogy signal of video signal S3 the 3rd analogy signal of video signal
S100, step
S102、
S104
Embodiment
See also Fig. 1, Fig. 1 is the synoptic diagram of analogy signal of video signal adjustment module 1 according to an embodiment of the invention.As shown in Figure 1, analogy signal of video signal adjustment module 1 comprises receiving element 11, mnemon 13 and processing unit 15.Mnemon 13 couples receiving element 11 and processing unit 15 respectively, and processing unit 15 couples receiving element 11.Receiving element 11 comprises first passage 111, second channel 113 and third channel 115; First passage 111, second channel 113 and third channel 115 are respectively in order to receive the first kind than signal of video signal S1, the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3; And first passage 111 can optionally be closed respectively with third channel 115, and second channel 113 then can't be closed.That is to say that as long as receiving element 11 is in operating state, then receiving element 11 must receive the second analogy signal of video signal S2 by second channel 113.Whether can when receiving element 11 is in operating state, also be received than signal of video signal S1 and the 3rd analogy signal of video signal S3 as for the first kind, then look first passage 111 respectively and whether be unlocked with third channel 115 and determine.For instance; If the first passage 111 of receiving element 11, second channel 113 all are unlocked with third channel 115; Receiving element 11 receives the first kind than signal of video signal S1, the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3 by first passage 111, second channel 113 with third channel 115 respectively, and receiving element 11 also can be exported the mixed signal of aforementioned three analogy signal of video signal.If only the first passage 111 of receiving element 11 is unlocked with second channel 113; And third channel 115 is selectively closed; Then receiving element 11 only receives the first kind than the signal of video signal S1 and the second analogy signal of video signal S2 by first passage 111 and second channel 113 respectively, and can export the mixed signal of aforementioned two analogy signal of video signal.Similarly; If only the second channel 113 of receiving element 11 is unlocked with third channel 115; And first passage 111 is selectively closed; Then receiving element 11 only receives the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3 by second channel 113 and third channel 115 respectively, and can export the mixed signal of aforementioned two analogy signal of video signal.If only the second channel 113 of receiving element 11 is unlocked; And first passage 111 all is selectively closed with third channel 115; Then receiving element 11 only receives the second analogy signal of video signal S2 by second channel 113, and can directly export the second analogy signal of video signal S2.
In practical application; Analogy signal of video signal adjustment module 1 (for example: scaler IC) can be applicable in the signal of video signal processing wafers of display device; In display device (for example: host computer) (for example: see through the D-Sub connecting line and receive the VGA signal receive nonsynchronous analogy signal of video signal from signal source; D-sub is the abbreviation of D-subminiature; VGA is the abbreviation of Video Graphics Array) after, by analogy signal of video signal adjustment module 1 nonsynchronous analogy signal of video signal is adjusted near synchronous relatively analogy signal of video signal earlier, or reduces nonsynchronous analogy signal of video signal phase differential to each other at least; Again adjusted analogy signal of video signal is carried out subsequent treatment (for example: convert the analogy signal of video signal into the digital image signal), so that it is better finally to be shown in the image quality of display device.In practical application; The first kind can be respectively pink group in the VGA signal than signal of video signal (R), green analogy signal of video signal (G) and blue analogy signal of video signal (B) than signal of video signal S1, the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3; First passage 111, second channel 113 and third channel 115 then can be respectively in order to receive aforementioned pink group than signal of video signal (R), green analogy signal of video signal (G) red channel (R Channel), the green passage (G Channel) and blue signal passage (B Channel) with blue analogy signal of video signal (B), look practical application and decide.
In one embodiment of this invention; Receiving element 11 is under corresponding clock signal; According to predetermined condition optionally receive the first kind than signal of video signal S1, the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3 at least one of them; Producing plural primitive class, and plural primitive class is stored in mnemon 13 than signal of video signal than signal of video signal.
Please consult Fig. 2, Fig. 3 and Fig. 4 simultaneously; Fig. 2 illustrates the synoptic diagram of the first mixing analogy signal of video signal according to an embodiment of the invention; Fig. 3 illustrates the synoptic diagram of the second mixing analogy signal of video signal according to an embodiment of the invention, and Fig. 4 then illustrates the synoptic diagram of the second analogy signal of video signal according to an embodiment of the invention.Specifically; In one embodiment of this invention; Predetermined condition can be: under corresponding clock signal CS; Receiving element 11 is optionally closed earlier first passages 111, only receiving the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3 respectively by second channel 113 and third channel 115, receiving element 11 and produce that the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S 3 mix first mix analogy signal of video signal MS1; And export mnemon 13 to, as shown in Figure 2; Then; Under corresponding clock signal CS; Receiving element 11 changes into optionally closes third channel only to receive the first kind respectively than the signal of video signal S1 and the second analogy signal of video signal S2 by first passage 111 and second channel 113; Receiving element 11 also produces the first kind and second mixes analogy signal of video signal MS2 than what the signal of video signal S1 and the second analogy signal of video signal S2 mixed, and exports mnemon 13 to, and is as shown in Figure 3; And under corresponding clock signal CS; Receiving element 11 further changes into optionally closes first passage 111 and third channel 115 simultaneously only to receive the second analogy signal of video signal S2 by second channel 113; And directly export mnemon 13 to, as shown in Figure 4.So in this embodiment; The plural number primitive class comprises by what the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3 mixed than signal of video signal and first mixes analogy signal of video signal MS1, second mixes analogy signal of video signal MS2 by the first kind than what the signal of video signal S1 and the second analogy signal of video signal S2 mixed, and the second analogy signal of video signal S2.When processing unit 15 carries out aforementioned reception action, particular order be need according to, analogy signal of video signal MS1, the second mixing analogy signal of video signal MS2 and the second analogy signal of video signal S2 mixed as long as can obtain first at last.
Then; The plural primitive class that processing unit 15 relatively is stored in mnemon 13 than signal of video signal and corresponding clock signal CS with decision phase differential information, and the first kind that postpones according to phase differential information control receiving element 11 to be received than signal of video signal S1, the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3 at least one of them.Specifically, processing unit 15 comparisons, first mixing analogy signal of video signal MS1 and clock signal CS are to obtain the first phase differential PD1, and be as shown in Figure 2.Processing unit 15 comparisons, second mixing analogy signal of video signal MS2 and clock signal CS are to obtain the second phase differential PD2, and be as shown in Figure 3.Processing unit comparison second analogy signal of video signal S2 and clock signal CS are to obtain third phase potential difference PD3, and be as shown in Figure 4.And aforementioned phase differential information comprises the first phase differential PD1, the second phase differential PD2 and third phase potential difference PD3.When processing unit 15 carries out aforementioned three comparison, need not according to particular order, as long as obtain the first phase differential PD1, the second phase differential PD2 and third phase potential difference PD3 at last.Then; Processing unit 15 is the difference between the first phase differential PD1, the second phase differential PD2 and the third phase potential difference PD3 relatively, corresponds respectively to first delay parameter, second delay parameter and three delay parameter of the first kind than signal of video signal S1, the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3 with generation.At last; The first kind that processing unit 15 postpones respectively according to first delay parameter, second delay parameter and the 3rd delay parameter control receiving element 11 to be received by first passage 111, second channel 113 and third channel 115 than signal of video signal S1, the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3 at least one of them; So that nonsynchronous first kind is adjusted near synchronous relatively than signal of video signal S1, the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3 originally, or reduce phase differential to each other at least.What need special instruction is; Because the first phase differential PD1, the second phase differential PD2 are to compare first respectively by processing unit 15 to mix analogy signal of video signal MS1, the second mixing analogy signal of video signal MS2 and the second analogy signal of video signal S2 with respect to the resulting phase differential out of the ordinary of clock signal CS with third phase potential difference PD3; And under the predetermined condition of present embodiment; First mixes analogy signal of video signal MS1 mixes analogy signal of video signal MS2 and is respectively mixed signal and the first kind of the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3 mixed signal than the signal of video signal S1 and the second analogy signal of video signal S2 again with second; So under present embodiment; After the difference that processing unit 15 compares between the first phase differential PD1, the second phase differential PD2 and the third phase potential difference PD3; And it is poorer than signal of video signal S1, the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3 precise phase each other to obtain the first kind; This is to be subject to only to have first passage and third channel optionally to be closed respectively in the receiving element, and second channel also can't the event of optionally pent hardware restriction.Yet; Because the second analogy signal of video signal S2 is not a mixed signal; So if so that relatively the second analogy signal of video signal S2 and clock signal CS are reference data with the third phase potential difference PD3 that obtains; Again with third phase potential difference PD3 with relatively first mix that analogy signal of video signal MS1 mixes analogy signal of video signal MS2 with resulting first phase differential PD1 of clock signal CS and comparison second and clock signal CS compares to obtain the second phase differential PD2 each other; Its comparative result still can be in order to the adjustment first kind than signal of video signal S1, the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3 phase differential each other; Make between the three by time delay with the adjustment phase place after near synchronous relatively, or reduce phase differential to each other at least.
For instance; If after the difference that processing unit 15 compares between the first phase differential PD1, the second phase differential PD2 and the third phase potential difference PD3; Judge that the first kind is than leading the 3rd analogy signal of video signal S3 of the signal of video signal S1 and the second analogy signal of video signal S2; Then processing unit 15 can be respectively controlled the first kind that receiving element 11 postpones to be received by first passage 111 and second channel 113 than the signal of video signal S1 and the second analogy signal of video signal S2 according to first delay parameter and second delay parameter; So that the first kind is approaching more synchronous relatively than the phase place between signal of video signal S1, the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3, or reduce phase differential to each other at least.If after the difference that processing unit 15 compares between the first phase differential PD1, the second phase differential PD2 and the third phase potential difference PD3; Judge that the first kind is than the leading second analogy signal of video signal S2 of signal of video signal S1 and the 3rd analogy signal of video signal S3; Then processing unit 15 can be respectively controlled the first kind that receiving element 11 postpones to be received by first passage 111 and third channel 115 than signal of video signal S1 and the 3rd analogy signal of video signal S3 according to first delay parameter and the 3rd delay parameter; So that the first kind is approaching more synchronous relatively than the phase place between signal of video signal S1, the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3, or reduce phase differential to each other at least.Similarly; If after the difference that processing unit 15 compares between the first phase differential PD1, the second phase differential PD2 and the third phase potential difference PD3; Judge that the leading first kind of the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3 is than signal of video signal S1; Then processing unit 15 can be controlled the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3 that receiving element 11 delays are received by second channel 113 and third channel 115 according to second delay parameter and the 3rd delay parameter respectively; So that the first kind is approaching more synchronous relatively than the phase place between signal of video signal S1, the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3, or reduce phase differential to each other at least.
See also Fig. 5, and consult Fig. 2 to Fig. 4 simultaneously.Fig. 5 be according to an embodiment of the invention primitive class than the synoptic diagram of signal of video signal and phase differential information; Wherein primitive class comprises first than signal of video signal and mixes analogy signal of video signal MS1, the second mixing analogy signal of video signal MS2 and the second analogy signal of video signal S2, and the phase differential information comprises the first phase differential PD1, the second phase differential PD2 and third phase potential difference PD3.In practical application, the chronomere of phase differential information can correspond to the different time interval, and for example each chronomere corresponds to 90 psecs (picosecond).
As shown in Figure 5, after processing unit 15 compared the first mixing analogy signal of video signal MS1 (being mixed by the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3) and clock signal CS (as shown in Figure 2), obtaining the first phase differential PD1 was 53 chronomeres.Processing unit 15 relatively second mix analogy signal of video signal MS2 (by the first kind than the signal of video signal S1 and the second analogy signal of video signal S2) and clock signal CS (as shown in Figure 3) after, obtaining the second phase differential PD2 is 45 chronomeres.And after processing unit 15 compared the second analogy signal of video signal S2 and clock signal CS (as shown in Figure 4), obtaining third phase potential difference PD3 was 44 chronomeres.In the present embodiment; Because among the first phase differential PD1, the second phase differential PD2 and third phase potential difference PD3; Third phase potential difference PD3 is minimum; So processing unit 15 can third phase potential difference PD3 as reference data, second delay parameter that is about to correspond to the second analogy signal of video signal S2 is made as 0 chronomere.
The difference of the first phase differential PD1 and third phase potential difference PD3 is 9 chronomeres; And the first phase differential PD1 corresponds to the first mixing analogy signal of video signal MS1 (being mixed by the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3), so can the 3rd delay parameter that correspond to the 3rd analogy signal of video signal S3 be made as 9 chronomeres.That is to say; First mix in the phase differential that analogy signal of video signal MS1 caused what mix by the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3; Phase differential influence so that the estimation mode will roughly be caused by the second analogy signal of video signal S2 is removed; With the phase differential of estimating roughly to be caused by the 3rd analogy signal of video signal S3, and the 3rd delay parameter of the 3rd analogy signal of video signal S3 of setting correspondence according to this.Similarly; The difference of the second phase differential PD2 and third phase potential difference PD3 is 1 chronomere; And the second phase differential PD2 corresponds to the second mixing analogy signal of video signal MS2 (being mixed than the signal of video signal S1 and the second analogy signal of video signal S2 by the first kind), so can be made as 1 chronomere with corresponding to first delay parameter of the first kind than signal of video signal S1.That is to say; Second mix in the phase differential that analogy signal of video signal MS2 caused what mix than the signal of video signal S1 and the second analogy signal of video signal S2 by the first kind; Phase differential influence so that the estimation mode will roughly be caused by the second analogy signal of video signal S2 is removed; Estimating roughly by the first kind, and set first delay parameter of the corresponding first kind according to this than signal of video signal S1 than the phase differential that signal of video signal S1 was caused.Under present embodiment; Because the corresponding first kind is respectively 1 chronomere, 0 chronomere and 9 chronomeres than first delay parameter, second delay parameter and the 3rd delay parameter of signal of video signal S1, the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3; Reach 1 chronomere than signal of video signal S1 and reach 9 chronomeres so processing unit 15 can be respectively controlled the first kind that receiving element 11 postpones to be received by first passage 111 according to first delay parameter and the 3rd delay parameter with the 3rd analogy signal of video signal S3 that postpones to be received by third channel 115; So that the first kind is approaching more synchronous relatively than the phase place between signal of video signal S1, the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3, or reduce phase differential to each other at least.If to correspond to 90 psecs with each chronomere is example, then under present embodiment, processing unit 15 can control receiving elements 11 postpones respectively that the first analogy signal of video signal S1 reaches 90 psecs and delay control three analogy signal of video signal S3 reach 810 psecs.
In other embodiments; If according to the difference between the first phase differential PD1, the second phase differential PD2 and the third phase potential difference PD3 or according to first delay parameter, second delay parameter and the 3rd delay parameter; The first kind then only need be adjusted the nonsynchronous signal of another one than the two being arranged near synchronous relatively among signal of video signal S1, the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3.For instance; If after the difference that processing unit 15 compares between the first phase differential PD1, the second phase differential PD2 and the third phase potential difference PD3; The phase place of judging the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3 is near synchronous relatively; And the first kind is than leading second analogy signal of video signal S2 of signal of video signal S1 and the 3rd analogy signal of video signal S3; Then processing unit 15 can be only controlled the first kind that receiving element 11 postpones to be received by first passage 111 than signal of video signal S1 according to first delay parameter; So that the first kind is approaching more synchronous relatively than the phase place between signal of video signal S1, the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3, or reduce phase differential to each other at least.
See also Fig. 6, Fig. 6 is the process flow diagram of analogy signal of video signal method of adjustment according to an embodiment of the invention.Analogy signal of video signal method of adjustment of the present invention is to be applied to analogy signal of video signal adjustment module 1 as shown in Figure 1.Please consult Fig. 1 to Fig. 4 in the lump, analogy signal of video signal method of adjustment of the present invention comprises the following step.At first; Execution in step S100; Under corresponding clock signal CS according to predetermined condition; By first passage 111, second channel 113 and third channel 115 optionally receive the first kind than signal of video signal S1, the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3 at least one of them, compare signal of video signal to produce plural primitive class.Then, execution in step S102, more plural primitive class are than signal of video signal and corresponding clock signal CS, with decision phase differential information.At last, execution in step S104, according to the phase differential information, postpone first passage 111, second channel 113 and 115 first kind that receive respectively of third channel than signal of video signal S1, the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3 at least one of them.
Further, step S100 can comprise: optionally close first passage 111, first mix analogy signal of video signal MS1 with what produce that the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3 mix; Optionally close third channel 115, second mix analogy signal of video signal MS2 than what the signal of video signal S1 and the second analogy signal of video signal S2 mixed to produce the first kind; And optionally close first passage 111 and third channel 115; Receiving the second analogy signal of video signal S2, and plural primitive class comprises first than signal of video signal and mixes analogy signal of video signal MS1, second and mix the analogy signal of video signal MS2 and the second analogy signal of video signal S2.Step S102 can further comprise: relatively the first mixing analogy signal of video signal MS1 and clock signal CS are to obtain the first phase differential PD1; Relatively the second mixing analogy signal of video signal MS2 and clock signal CS are to obtain the second phase differential PD2; And relatively the second analogy signal of video signal S2 and clock signal CS are obtaining third phase potential difference PD3, and the phase differential information comprises the first phase differential PD1, the second phase differential PD2 and third phase potential difference PD3.Step S104 then can further comprise: relatively the first phase differential PD1, the second phase differential PD2 correspond respectively to first delay parameter, second delay parameter and three delay parameter of the first kind than signal of video signal S1, the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3 with third phase potential difference PD 3 with generation, and according to 115 of first delay parameter, second delay parameter and the 3rd delay parameter delay first passage 111, second channel 113 and third channels respectively reception the first kind than signal of video signal S1, the second analogy signal of video signal S2 and the 3rd analogy signal of video signal S3 at least one of them.
In sum; Analogy signal of video signal adjustment module of the present invention and analogy signal of video signal method of adjustment system are by the phase differential between more plural nonsynchronous analogy signal of video signal and the clock signal; And adjust the phase place of plural analogy signal of video signal; Nonsynchronous plural analogy signal of video signal being adjusted near synchronous relatively analogy signal of video signal, or reduce phase differential to each other at least.By this, can improve the situation of display picture colour cast.
Though the present invention discloses as above with embodiment; Right its is not in order to qualification the present invention, and technician in any affiliated technical field is not breaking away from the spirit and scope of the present invention; When doing a little change and retouching, so protection scope of the present invention is as the criterion with the scope that claim was defined.
Claims (8)
1. an analogy signal of video signal is adjusted module, it is characterized in that this signal adjustment module comprises:
Receiving element; This receiving element comprises first passage, second channel and third channel; This first passage, this second channel and this third channel are respectively in order to receive the first kind than signal of video signal, the second analogy signal of video signal and the 3rd analogy signal of video signal; And this first passage and this third channel can optionally be closed respectively; This receiving element under corresponding clock signal, according to predetermined condition optionally receive this first kind than signal of video signal, this second analogy signal of video signal and the 3rd analogy signal of video signal at least one of them, compare signal of video signal to produce plural primitive class;
Mnemon, this mnemon couples this receiving element, and this mnemon stores should compare signal of video signal by the plural number primitive class; And
Processing unit; This processing unit couples this mnemon and this receiving element; This processing unit relatively should the plural number primitive class than signal of video signal and corresponding this clock signal with decision phase differential information, and this first kind that postpones according to this this receiving element of phase differential information control to be received than signal of video signal, this second analogy signal of video signal and the 3rd analogy signal of video signal at least one of them.
2. analogy signal of video signal adjustment module as claimed in claim 1; It is characterized in that this predetermined condition is: this receiving element is optionally closed this first passage and first is mixed the analogy signal of video signal with what produce that this second analogy signal of video signal and the 3rd analogy signal of video signal mix; This receiving element is optionally closed this third channel and second is mixed the analogy signal of video signal to produce this first kind than what signal of video signal and this second analogy signal of video signal mixed; And this receiving element optionally closes this first passage and this third channel receiving this second analogy signal of video signal, and this first mixed analogy signal of video signal, this second mixes analogy signal of video signal and this second analogy signal of video signal and should the plural number primitive class comprise than signal of video signal.
3. analogy signal of video signal adjustment module as claimed in claim 2; It is characterized in that relatively this first mixes analogy signal of video signal and this clock signal to obtain first phase differential to this processing unit; Relatively this second mixes analogy signal of video signal and this clock signal to obtain second phase differential to this processing unit; Also relatively this second analogy signal of video signal and this clock signal are to obtain the third phase potential difference for this processing unit, and this phase differential information comprises this first phase differential, this second phase differential and this third phase potential difference.
4. analogy signal of video signal adjustment module as claimed in claim 3; It is characterized in that this processing unit relatively this first phase differential, this second phase differential correspond respectively to first delay parameter, second delay parameter and three delay parameter of this first kind with this third phase potential difference with generation than signal of video signal, this second analogy signal of video signal and the 3rd analogy signal of video signal, and according to this first delay parameter, this second delay parameter and the 3rd delay parameter postpone this first kind that this receiving element received than signal of video signal, this second analogy signal of video signal and the 3rd analogy signal of video signal at least one of them.
5. analogy signal of video signal method of adjustment; Be applied to analogy signal of video signal adjustment module; This analogy signal of video signal adjustment module comprises first passage, second channel and third channel; This first passage, this second channel and this third channel be respectively in order to receiving the first kind than signal of video signal, the second analogy signal of video signal and the 3rd analogy signal of video signal, and this first passage and this third channel can optionally be closed respectively, it is characterized in that this analogy signal of video signal method of adjustment comprises the following step:
(1) under corresponding clock signal according to predetermined condition; By this first passage, this second channel and this third channel optionally receive this first kind than signal of video signal, this second analogy signal of video signal and the 3rd analogy signal of video signal at least one of them, compare signal of video signal to produce plural primitive class;
(2) relatively should the plural number primitive class than signal of video signal and this corresponding clock signal, with decision phase differential information; And
(3) according to this phase differential information, postpone this first passage, this second channel and this third channel this first kind of receiving respectively than signal of video signal, this second analogy signal of video signal and the 3rd analogy signal of video signal at least one of them.
6. analogy signal of video signal method of adjustment as claimed in claim 5; It is characterized in that step (1) comprises: optionally close this first passage and first mix the analogy signal of video signal with what produce that this second analogy signal of video signal and the 3rd analogy signal of video signal mix; Optionally close this third channel and second mix the analogy signal of video signal than what signal of video signal and this second analogy signal of video signal mixed to produce this first kind; And optionally close this first passage and this third channel receiving this second analogy signal of video signal, this first mixed analogy signal of video signal, this second mixes analogy signal of video signal and this second analogy signal of video signal and should the plural number primitive class comprise than signal of video signal.
7. analogy signal of video signal method of adjustment as claimed in claim 6; It is characterized in that step (2) comprises: relatively this first mixing analogy signal of video signal and this clock signal are to obtain first phase differential; Relatively this second mixing analogy signal of video signal and this clock signal are to obtain second phase differential; And relatively this second analogy signal of video signal and this clock signal are to obtain the third phase potential difference, and this phase differential information comprises this first phase differential, this second phase differential and this third phase potential difference.
8. analogy signal of video signal method of adjustment as claimed in claim 7; It is characterized in that step (3) comprises: relatively this first phase differential, this second phase differential correspond respectively to first delay parameter, second delay parameter and three delay parameter of this first kind than signal of video signal, this second analogy signal of video signal and the 3rd analogy signal of video signal with this third phase potential difference with generation, and according to this first delay parameter, this second delay parameter and the 3rd delay parameter postpone this first passage, this second channel and this third channel institute respectively reception this first kind than signal of video signal, this second analogy signal of video signal and the 3rd analogy signal of video signal at least one of them.
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