CN1368824A - Method and device for detecting full-screen size by data actuating signals - Google Patents
Method and device for detecting full-screen size by data actuating signals Download PDFInfo
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Abstract
A device, which can test dimensions of a screen with data intelligent signal, contains time sequence control and multitransfer device. The time sequence control device is composed of a multiinput terminal interconnecting with a display panel and one signal control terminal transmitting control signal. When adjusting image signal, the time sequence device may feed the control signal into multitransfering device to feed the data intelligent signal to that of time sequence control to appear a full screen of dimensions. After adjusting the frame, the time sequence control device changes the logical state of the control signal to normalize the signal received by it to the right display place so as to appear a real frame image.
Description
The present invention relates to a kind of method and apparatus that detects the ins in full screen size of display, particularly a kind of method and apparatus with detecting full-screen size by data actuating signals.
In the epoch of this information explosion, electronic industry flourish, the source that people take in knowledge no longer is confined to medium such as newspapers and magazines or television broadcasting already, as long as cost the train of world-wide web, just can obtain first hand information from all over the world at any time; Just because of this, personal computer is also popularized with surprising rapidity in most family, and gos deep among everyone daily life, makes the development of computer industry to present a slice scene of flourishing life.On the other hand, under computer industry flourish, also driven progressing greatly and innovating of imaging technique, with the display is example, and traditional cathode ray tube (CRT) display is because bulky and radiation is serious, the market of the high-order display that fades out gradually in recent years, replace, being low radiation, low power consumption and compact LCD (LCD), is the main flow machine that becomes high-order market with LCD already, becomes the synonym of high-order display.
The screen of display is rearranged by various pixels, and meaning is that each pixel is exactly the most basic video picture unit.During video picture, can by in the shows signal corresponding to the tricolor signal ratio of each pixel, decide each pixel the color and the brightness that should show, to present complete image.Therefore, compare with the screen of identical size, if the number of pixels of screen is many more, represent that then the shared area of each pixel is more little, the picture that can present is also just careful more.When judging the careful degree of picture, the normal foundation that is used as judging with resolution (resolution) height of picture, generally speaking, the number of pixels that resolution refers to each row (row) in the picture multiply by the product of pixel after several of each row (column), for example 800 * 600 or 1024 * 768 etc., resolution is high more, represents that then the picture that presents is careful more.Because present display all can be supported the display mode of multiple resolution, therefore, though the number of pixels of display fix, under different display modes, still can be, and present the picture of different resolution according to the difference of shows signal; In addition, the color level that each pixel can present, then by in the tricolor signal, the position number of each primary signal decides.For instance, can utilize 8 positions or 6 positions to form each primary signal, with the primary signal of 8 compositions, just have 256 (promptly 2
8) the kind level; And with the primary signal of 6 compositions, then have only 64 (promptly 2
6) plant level, certainly, many more in order to the figure place of expression primary signal, color is also abundant more, and promptly the resolution to color is also high more for meaning.It should be noted that, so-called herein tricolor signal, required primary signal when being meant three kinds of video pictures is an example with present display, can utilize danger signal, blue signal and green three to be combined into the required color of picture during video picture, and this three is collectively referred to as tricolor signal; Certainly, three primary colors are not limited to three kinds of colors such as red, green, blue, and any three kinds of color signals that reach above-mentioned functions all can be used as tricolor signal.Hereinafter, will be illustrated at the function of each signal in the shows signal.
The signal of video signal of input digit display is generally the code signal of low-voltage differential, and the content of its code signal comprises three primary colors digital signal, horizontal-drive signal Hs, vertical synchronizing signal Vs, data actuating signal DE and pixel clock CK etc.In Fig. 1, because display only can present digitized image, the code signal 102 of this low-voltage differential is to comprise Rx0-, Rx0+, Rx1-, Rx1+, Rx2-, Rx2+, signals such as RxC-and RxC+, those signals must see through differential signal Rcv decoder 110 separate become digital displaying signal 104 after, could be handled.Therefore, differential signal Rcv decoder 110 can be separated the code signal 102 that step-down pressure reduction divides and is reduced into digital signals such as its original three primary colors digital displaying signal 104 (RD, GD and BD), horizontal-drive signal Hs, vertical synchronizing signal Vs, data actuating signal DE and pixel clock CK behind the code signal 102 that receives low-voltage differential.Behind the digital displaying signal 104 feed-in ratio processors 130, can obtain optimized image output by handling procedures such as phase place adjustment or interpolation calculations; Because these methods of adjustment are not emphasis of the present invention, in this in detail its principle of operation are not described in detail just, hereinafter, will be illustrated at the horizontal-drive signal Hs in the display, vertical synchronizing signal Vs, data actuating signal DE and pixel clock CK etc.
The unit of horizontal-drive signal Hs, vertical synchronizing signal Vs and pixel clock CK all is a frequency, but pixel clock CK is the pixel count of per second Show Color, has determined certain pixel Show Color to the next pixel Show Color length of blanking time.When the picture data input display, display just begins Show Color by the pixel of upper left side first row, first row, be the pixel of first row, second row afterwards in regular turn, the pixel of first row the third line ..., after the pixel image of first row last column finishes, the pixel Show Color of wraparound secondary series first row then is the pixel of secondary series second row again ..., by that analogy, the pixel Show Color of a row last column to the last.So the color that each pixel is shown is pieced together, and can form picture to display.And when another picture data input display, then the pixel of being gone by upper left side first row first again begins, and determines each pixel color to display according to identical order, pieces together out another picture thus.It should be noted that after the pixel image of each row last column finishes, is to come Show Color by the pixel of horizontal-drive signal Hs control wraparound next column first row, so horizontal-drive signal Hs can determine the pixel columns of per second Show Color; And after the pixel image of last row last column of screen finishes, come Show Color by first first pixel of row of vertical synchronizing signal Vs control wraparound screen, so vertical synchronizing signal Vs can determine per second picture displayed number.Because people's eyes have the phenomenon of the persistence of vision, so if the renewal speed of display picture arrives certain degree greatly, then the picture that upgrades fast is not the picture that flashes fast one by one just by the human eye finding, but continuous dynamic picture composition, just film.The speed that different pictures is changed on indicator screen is called renewal frequency (refresh rate), the just frequency of vertical synchronizing signal Vs.The frame updating frequency of at present general main frame is more than the 60Hz, and promptly indicator screen can show 60 picture datas in one second at least.Hereinafter, will cooperate graphicly, the sequential relationship between each signal such as horizontal-drive signal Hs, vertical synchronizing signal Vs, data actuating signal DE and pixel clock CK will be described.
With reference to Fig. 2 A, it illustrates the sequential relationship schematic diagram between horizontal-drive signal Hs, vertical synchronizing signal Vs and the data actuating signal DE.Resolution with 1024 * 768 is example, and the horizontal-drive signal Hs under this resolution can be 48.36KHz, and vertical synchronizing signal Vs can be 60Hz, and pixel clock CK can be 65MHz.Therefore during video picture, because each picture has 768 row, vertical synchronizing signal Vs just exchanges once after the every exchange of horizontal-drive signal Hs 768 times, and a second commutative 60 pictures.On the other hand, data actuating signal DE can be in order to the physical length of expression picture, anticipate promptly, though pixel clock CK is the signal of fixed frequency, the result after pixel clock CK takes a sample to shows signal has only in the scope of data actuating signal DE and could be revealed effectively; That is to say that the cycle of data actuating signal DE is the actual length that presents of each row picture, and because each picture has 1024 row, so data actuating signal DE illustrates as Fig. 2 B in 1024 pixels of one-period domestic demand demonstration.Hereinafter, will horizontal-drive signal Hs, vertical synchronizing signal Vs and the appearance opportunity of data actuating signal DE and the relation between display frame be discussed.
With reference to Fig. 3, it illustrates the corresponding relation between picture area and each signal.The resolution of supposing picture 300 is 1024 * 768, then represent the length of picture 300 and wide 1024 and 768 pixels are arranged respectively, owing to the every bit pixel the color that should show be that sampling comes to shows signal by pixel clock CK, therefore in picture 300, the pixel of each row is all corresponding with 1024 pulses difference among the pixel clock CK; Moreover because cycle of data actuating signal DE be the actual length that presents of each row picture, so the cycle of data actuating signal DE is proper identical with the cycle of 1024 pixel clock CK, as illustrating among the figure.It should be noted that, owing to the length of each row in the picture 300 is to decide according to data actuating signal DE, also inequality with the cycle of horizontal-drive signal Hs, therefore the end end to end at horizontal-drive signal Hs all can have one section zone that does not have picture, is referred to as back edge (back porch) and leading edge (front porch); With this figure is example, and picture 300 left dashed region are the back edge BPH of horizontal-drive signal Hs, and picture 300 right-hand dashed region are the leading edge FPH of horizontal-drive signal Hs.Same reason, fringe region before and after vertical synchronizing signal Vs also has, picture 300 top dashed region are the back edge BPV of vertical synchronizing signal Vs, and picture 300 below dashed region are the leading edge FPV of vertical synchronizing signal Vs.Incidentally, edge, so-called herein front and back, its title is result sanctified by usage, is not very serious; And its representative does not importantly have the zone of shows signal, such idea to set up on the contrary beyond picture to come importantly than title many exactly.
Generally speaking, traditional monitor is to utilize in the signal of video signal of input, several the signal of video signal preset value comparisons that the frequency of level and vertical synchronizing signal and polarity are come and display is built-in, when the input signal of video signal synchronous signal frequency identical with polarity with arbitrary preset value, then display is just adjusted data with the picture of this preset value and is exported screen to, so that signal of video signal is adjusted to the tram of screen.But because the display card pattern is countless on the market now, so even above-mentioned comparing result is identical, also the leading edge of possible its signal of video signal and back edge sequential are also inequality; If still utilize this moment default picture to adjust adjustment of data picture, just have the incorrect situation of adjustment and take place, make picture can't be sent to the tram of screen, and have situations such as picture skew or sum of all pixels mistake to occur, have a strong impact on the rating quality.
Therefore, be correct edge, the front and back sequential of judging the image material, develop the control chips that edge before and after many detection then, but the detection method of these control chips, be according in the signal of video signal first have color pixel and last point to have color pixel to calculate; But when running into the full frame signal of video signal that is not full screen or black image (so-called black does not promptly have red, green, blue three looks, and black image for example is a pure DOS pattern etc.), the edge sequential just has very big problem before and after detecting with such account form.
In view of this, purpose of the present invention is exactly that a kind of method and apparatus with detecting full-screen size by data actuating signals is being provided, and whether the image data of no matter being imported full screen or have color, all can accurately learn ins in full screen size.
According to purpose of the present invention, a kind of method and apparatus with detecting full-screen size by data actuating signals is proposed.
Device with detecting full-screen size by data actuating signals can comprise time sequence control device and multiplexing unit, time sequence control device can comprise several inputs and a control signal end, each input can show that with one of color signal the position couples separately, to present each color of pixel; Whether the then exportable control signal of control signal end need carry out adjustment of image work with decision.After multiplexing unit is coupled to time sequence control device, can be according to the control signal of controlling the signal end feed-in certainly, selection carrying out adjustment of image work, or selects to show a feed-in time sequence control device with data actuating signal feed-in time sequence control device, to present real image.
For realizing described purpose, the invention provides a kind of method with detecting full-screen size by data actuating signals, be used to detect the ins in full screen size of a digital displaying signal, this digital displaying signal comprises a primary signal, and this primary signal has m and shows the position, and the method for this usefulness detecting full-screen size by data actuating signals may further comprise the steps: this data actuating signal is provided; And with the data of this data actuating signal as n demonstration position in this primary signal, and detect this ins in full screen size according to this, wherein, m and n are the integer greater than 0, and n is not more than m.
The present invention also provides a kind of device with detecting full-screen size by data actuating signals, be used to detect the ins in full screen size of a digital displaying signal, this digital displaying signal comprises a primary signal, and this primary signal has m and shows the position, the device of this usefulness detecting full-screen size by data actuating signals comprises: a sequential control device, this time sequence control device comprises a m input and a control signal end, this m input is to be used for coupling with this m demonstration position, and this control signal end is to be used to export a control signal; One multiplexing unit, this multiplexing unit is coupled to this time sequence control device, and n of this multiplexing unit and data actuating signal and this primary signal shows that the position couples, in order to the two selects n input of this time sequence control device of feed-in from n demonstration position of this data actuating signal and this primary signal according to this control signal, wherein, m and n are the integer greater than 0, and n is not more than m.
When the correcting image signal, time sequence control device can be with control signal feed-in multiplexing unit, to make data actuating signal feed-in input, so, can present the ins in full screen size of full frame according to this, and relevant parameter such as edge sequential before and after calculating, to obtain correct display frame size and location.After treating that the picture correction finishes, time sequence control device can change the logic state of control signal, is correct figure place showing certificate with the signal that makes each input be received, to present real picture image.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Fig. 1 illustrates the calcspar of display.
Fig. 2 A illustrates the sequential relationship schematic diagram between horizontal-drive signal, vertical synchronizing signal and the data actuating signal.
Fig. 2 B illustrates the sequential relationship schematic diagram between the data actuating signal and pixel clock among Fig. 2 A.
Fig. 3 illustrates the corresponding relation between picture area and each signal.
Fig. 4 A illustrates according to a preferred embodiment of the present invention, a kind of device calcspar with detecting full-screen size by data actuating signals that is provided.
Fig. 4 B illustrates the thin bilge construction schematic diagram of Fig. 4 A.
The inspection method of ins in full screen size provided by the present invention and device, when detecting ins in full screen size, be to utilize data actuating signal to replace in the digital displaying signal one or more to show the position, and the in addition identification of feed-in time sequence control device, to demonstrate ins in full screen size.Because data actuating signal is that the signal that time of shows signal appearance just occurs is really arranged in level and vertical synchronizing signal sequential, no matter therefore whether signal of video signal expires frame or complete black, as long as, can accurately learn relevant parameters such as picture size, position and resolution with demonstration position and the imaging according to this in the data actuating signal replacement digital displaying signal.It should be noted that, though these methods that detect ins in full screen size can be implemented any time, but because it is also untrue according to the image that the back is presented to replace figure place showing with data actuating signal, therefore after executing work such as relevant detection and picture correction, must recover the demonstration of original picture, just the unlikely rating quality that influences; Therefore on the practice, can utilize multiplexing unit to proofread and correct the signal change action of front and back, its embodiment will describe in detail in preferred embodiment.
With reference to Fig. 4 A, it illustrates according to a preferred embodiment of the present invention, a kind of device calcspar with detecting full-screen size by data actuating signals that is provided.Time sequence control device 430 comprises input port Ri, input port Gi, input port B i and control signal end CT, and input port Ri is in order to receive danger signal RD, and input port Gi is in order to receive green GD, and input port B i is in order to receive blue signal BD; When this tricolor signal feed-in time sequence control device 430, time sequence control device 430 can be calculated relevant parameters such as picture size, position and edge, front and back sequential according to this, in order to show image.Time sequence control device 430 herein can be a timing controller, and for example model is the timing controller of PW164-20R.It should be noted that if each primary signal is to represent that with m demonstration position then each input port also will have m input corresponding with it in this tricolor signal; With 24 digital displaying signals is example, danger signal RD, green GD, blue signal BD respectively have 8 to show the position, therefore also each needs 8 inputs for input port Ri, input port Gi, input port B i, and each shows that the position is corresponding one to one with an input, show the corresponding relation between position and each input, will illustrate in detail in conjunction with figs. hereinafter.It should be noted that, for being replaced, data actuating signal shows that the position is to detect ins in full screen size, and in the former display frame of picture correction finishing back switchback, so on the practice, can utilize multiplexing unit 410 to be coupled to time sequence control device 430, and carry out change action between two signals according to control signal Ctrl, present embodiment is the example that switches to the demonstration interdigit of data actuating signal DE and danger signal RD, and its embodiment will be in hereinafter describing in detail.
With reference to Fig. 4 B, it illustrates the thin bilge construction schematic diagram of Fig. 4 A.Danger signal RD is by showing position RD0, show position RD1,8 demonstration positions such as demonstration position RD7 are formed, same, green GD is by showing position GD0, show position GD1,8 demonstration positions such as demonstration position GD7 are formed, blue signal BD is by showing position BD0, show position BD1,8 demonstration positions such as demonstration position BD7 are formed, and can know by accompanying drawing and to find out, each show the position all each with time sequence control device 430 in an input of each input port couple, for example show that position RD6 is coupled to the input Ri6 of input port Ri, show that position GD7 is coupled to the input Gi7 of input port Gi etc.Note that signal mode of connection among Fig. 4 B, is to utilize data-signal DE to replace the highest demonstration position RD7 of danger signal RD with the usefulness as the ins in full screen size detection; Certainly on the practice, also can utilize data-signal DE to replace other demonstration positions of danger signal RD, or replace danger signal RD simultaneously several show the position, or replace that he plants primary signal one or more show the position and reach identical purpose with present embodiment, in this detailed description that just differs.With this figure is example, when digital displaying signal feed-in time sequence control device 430, the control signal end CT of time sequence control device 430 can be with the multiplexer 415 of control signal Ctrl feed-in multiplexing unit 410, multiplexer 415 can be according to the logic state of control signal Ctrl, it for example is logical one, close (being on) and switch SW 2 unlatchings (being off) with seasonal switch SW 1, so, just, the 8th that can data actuating signal DE substitutes danger signal RD shows a position-demonstration RD7 and feed-in input Ri7.Importantly, even this moment, former signal of video signal was not full frame picture or full shadow picture, behind data actuating signal DE feed-in input Ri7, can present the ins in full screen size of full frame according to this.Then, start the computing function of time sequence control device 430, relevant parameter such as edge sequential before and after can calculating, obtaining correct display frame size and location, and order shows that module gets and demonstrates correct image according to this.
After treating that the picture correction finishes, time sequence control device 430 can change the logic state of control signal Ctrl, for example making it is logical zero, so, multiplexer 415 can according to this switch SW 1 be opened (being off) and switch SW 2 is closed (being on), make the 8th of danger signal RD to show that position-demonstration position RD7 gets feed-in input Ri7, to present real picture image; Because this moment, digital displaying signal was corrected to best correct how much show states, so can reach optimized imaging results.
Moreover when the input signals such as horizontal-drive signal, vertical synchronizing signal or polarity of signal of video signal changed, time sequence control device 430 also can be carried out above-mentioned adjustment of image program once more, to keep optimized image quality.
It should be noted that, when detecting ins in full screen size in these modes, the demonstration position that data actuating signal DE is replaced is the highest demonstration position of each primary signal preferably, for example show position RD7 or demonstration position GD7 or show position BD7 etc., its reason is, the different demonstration position number that color-resolution adopted and inequality, for example 24 or 18 etc.; No matter but utilize several demonstrations position, usually the highest demonstration position all can be used, then might be rejected than low level, if the demonstration position that data actuating signal DE is replaced is not the highest demonstration position, this demonstration position just might not can in the lower signal of video signal of color-resolution be used to, so can't reach the purpose of above-mentioned adjustment of image.Therefore, can support at display under the situation of multicolour resolution, suggestion couples data actuating signal DE with the highest demonstration position, be more appropriate selection.Certainly, above-mentioned preferred embodiment is to be that example is illustrated with the color monitor, and right monochrome display also can be tried out inspection method provided by the present invention and device, and does not break away from spirit of the present invention.
The method and apparatus of the disclosed mat detecting full-screen size by data actuating signals of the above embodiment of the present invention, even the signal of video signal of input is not the full frame picture or the full shadow picture of full screen, also can accurately detect the ins in full screen size of this signal of video signal, and obtain optimized picture quality.
In sum; though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention should be with being as the criterion that the claim scope is defined.
Claims (18)
1. method with detecting full-screen size by data actuating signals, be used to detect the ins in full screen size of a digital displaying signal, this digital displaying signal comprises a primary signal, and this primary signal has m and shows the position, and the method for this usefulness detecting full-screen size by data actuating signals may further comprise the steps:
This data actuating signal is provided; And
With the data of this data actuating signal as n demonstration position in this primary signal, and detect this ins in full screen size according to this, wherein, m and n are the integer greater than 0, and n is not more than m.
2. the method with detecting full-screen size by data actuating signals as claimed in claim 1, wherein this primary signal is a danger signal.
3. the method with detecting full-screen size by data actuating signals as claimed in claim 1, wherein this primary signal is a green.
4. the method with detecting full-screen size by data actuating signals as claimed in claim 1, wherein this primary signal is a blue signal.
5. the method with detecting full-screen size by data actuating signals as claimed in claim 1, wherein m is 8.
6. the method with detecting full-screen size by data actuating signals as claimed in claim 1, wherein n is 8.
7. the method with detecting full-screen size by data actuating signals as claimed in claim 1, wherein m is 6.
8. the method with detecting full-screen size by data actuating signals as claimed in claim 1, wherein n is 6.
9. device with detecting full-screen size by data actuating signals, be used to detect the ins in full screen size of a digital displaying signal, this digital displaying signal comprises a primary signal, and this primary signal has m and show the position, and the device of this usefulness detecting full-screen size by data actuating signals comprises:
One sequential control device, this time sequence control device comprise a m input and a control signal end, and this m input is to be used for coupling with this m demonstration position, and this control signal end is to be used to export a control signal;
One multiplexing unit, this multiplexing unit is coupled to this time sequence control device, and n of this multiplexing unit and data actuating signal and this primary signal shows that the position couples, in order to the two selects n input of this time sequence control device of feed-in from n demonstration position of this data actuating signal and this primary signal according to this control signal, wherein, m and n are the integer greater than 0, and n is not more than m.
10. the device with detecting full-screen size by data actuating signals as claimed in claim 9, wherein this time sequence control device is a sequential control chip.
11. the device with detecting full-screen size by data actuating signals as claimed in claim 10, wherein the model of this timing controller is PW164-20R.
12. the device with detecting full-screen size by data actuating signals as claimed in claim 9, wherein this primary signal is a danger signal.
13. the device with detecting full-screen size by data actuating signals as claimed in claim 9, wherein this primary signal is a green.
14. the device with detecting full-screen size by data actuating signals as claimed in claim 9, wherein this primary signal is a blue signal.
15. the device with detecting full-screen size by data actuating signals as claimed in claim 9, wherein m is 8.
16. the device with detecting full-screen size by data actuating signals as claimed in claim 15, wherein n is 8.
17. the device with detecting full-screen size by data actuating signals as claimed in claim 9, wherein m is 6.
18. the device with detecting full-screen size by data actuating signals as claimed in claim 17, wherein n is 6.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101815226B (en) * | 2009-02-13 | 2012-01-11 | 晨星软件研发(深圳)有限公司 | Image adjusting apparatus and associated method |
| CN102789778A (en) * | 2011-05-18 | 2012-11-21 | 瑞昱半导体股份有限公司 | Image processing device and image processing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101815226B (en) * | 2009-02-13 | 2012-01-11 | 晨星软件研发(深圳)有限公司 | Image adjusting apparatus and associated method |
| CN102789778A (en) * | 2011-05-18 | 2012-11-21 | 瑞昱半导体股份有限公司 | Image processing device and image processing method |
| CN102789778B (en) * | 2011-05-18 | 2015-08-19 | 瑞昱半导体股份有限公司 | Image processor and image treatment method |
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