CN101241665B - Method for improving image display efficiency and its related device - Google Patents
Method for improving image display efficiency and its related device Download PDFInfo
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- CN101241665B CN101241665B CN200710008013A CN200710008013A CN101241665B CN 101241665 B CN101241665 B CN 101241665B CN 200710008013 A CN200710008013 A CN 200710008013A CN 200710008013 A CN200710008013 A CN 200710008013A CN 101241665 B CN101241665 B CN 101241665B
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Abstract
The invention provides a method for increasing image display effect which comprises a first frame signal that comprises a first blanking signal and a first image data, the first blanking signal comprises a first sync signal, a first leading edge signal and a first lagging edge signal; separating the first blanking signal and the first image data; executing image process for the first image data to generate a second image data; adding the second blanking signal into the second image data to generate a second frame signal, therein, the second blanking signal comprises a second sync signal, a second leading edge signal and a second lagging edge signal.
Description
Technical field
The present invention relates to a kind of method that promotes image display efficiency, particularly a kind of by separating and cutting down signal to promote the method for image display efficiency.
Background technology
The characteristic that persists by eye image, the mode of cathode-ray tube display frame is not that view data with picture once all is presented on the screen, but with the picture signal segmentation, passes through cathode-ray tube (CRT), on every horizontal line, make whole image be presented on the screen by column scan.Cathode-ray tube (CRT) is after scanning the other end from a horizontal end, to move to next bar horizontal line and begin to scan next time by column scan.The one section time enough of process need that moves navigates to the horizontal reference position of next bar by cathode-ray tube (CRT), and the cathode during ray tube is not launched any electronic signal.In addition, display also needs a signal to notify cathode-ray tube (CRT) when to begin to scan next bar horizontal line.Therefore, in the image timing (video timing) of traditional cathode-ray tube, the signal of a picture generally can be divided into level and vertical component.Horizontal component is except comprising every horizontal view data, and between every section view data, each inserts a blanking signal (Blank).In each blanking signal, can be divided into a rising edge signal (Front porch), a horizontal-drive signal (Hsync) and a back in regular turn along signal (Back porch).Any data are not transmitted along signal in forward position and back, are used for allowing cathode-ray tube (CRT) have the enough time to move to the starting point of scanning, and horizontal-drive signal then is used for notifying cathode-ray tube (CRT) when to begin scanning.In addition, after a whole image been scanned, cathode-ray tube (CRT) will be got back to the upper left side of screen to rescan next new picture.Therefore, vertical component also provides a rising edge signal, a vertical synchronizing signal (Vsync) and a back along signal, its function is identical with horizontal component, and relevant timing standard can be with reference to broad sense timing formula (the Generalized TimingFormula of VESA (VideoElectronics Standards Association); GTF).
In recent years, along with the quick evolution of science and technology, the generation of display is developed to LCD from conventional cathode ray tube.In general, the mode of liquid crystal display displays picture, be online in several scannings of panel by gate drivers (Gatedriver) transmission signal, switch with each pixel on the controlling level line, and by source electrode driver (Source driver) transmitted image data (as the red, green, blue signal) in several online data, to drive the liquid crystal molecule of each pixel.On implementation, LCD is digitizing with the different of traditional monitor maximum, and non-traditional analog form.Therefore, digitized LCD can provide more kinds of application functions in the control of user's picture, as screen resolution switching, the change (as 4: 3 or 16: 9) of aspect ratio and change of picture display frequency (frame rate) or the like.These functions involve that the LCD internal image is handled and timing technology, and the image timing technology of available liquid crystal display is still continued to use the specification of conventional cathode ray display and realized.Therefore, when existing techniques in realizing aforementioned applications function, often, can't reach better effect based on the restriction of the bandwidth or the buffer sizes of transmission interface.Continue to use the regularly available liquid crystal display of standard of tradition as one, when carrying out the lifting of picture display rate, be after receiving image information from different interface (as antenna, aberration terminal or the like) earlier, internal buffer duplicates the horizontal component signal (comprising every section blanking signal and view data) of each picture, and after carrying out relevant Flame Image Process (as the data interpolation, cross drive etc.) via processor, in the short cycle, transmit the horizontal component signal to the relevant apparatus broadcasting pictures, and then reach the lifting of picture display rate.Yet, when available liquid crystal display desire promotes the picture display rate to big multiple, for aforesaid action of duplicating with Flame Image Process, because blanking signal is also duplicated together, then the available liquid crystal display needs the bigger impact damper of built-in capacity, also consumes more system resources.
In addition, if an available liquid crystal display continue to use regularly standard of traditional VESA, and the interface of built-in images information is Low Voltage Differential Signal technology (Low Voltage DifferentialSignaling; LVDS), its maximum transmission bandwidth is between 85～90MHz.When the available liquid crystal display is just being play the image of resolution 1280 * 1024 pixels, display rate 60Hz, according to traditional VESA timing standard, (in general the level that each picture need be transmitted and vertical all pixels (comprising blanking signal) are respectively 1688 and 1066, level and vertical all pixels be respectively level and vertical play 1.3 times of resolution with 1.05 times), its data transfer rate can be calculated by following formula:
The whole pixels of data transfer rate=level * vertical all pixel * picture display rate ÷ LVDS number of active lanes
＝1688×1066×60÷2
＝53.98MHz
By result of calculation as can be known, data transfer rate is still in the maximum transmission bandwidth restriction of Low Voltage Differential Signal technology.If when the picture display rate was promoted to 100Hz, data transfer rate was calculated as 89.97MHz through above-mentioned formula, reached the maximum transmission bandwidth restriction; If when the picture display rate was promoted to 120Hz, data transfer rate was calculated as 107.96MHz through above-mentioned formula, this moment, the transmission bandwidth of LVDS can't be loaded as can be seen, and meaning is that the available liquid crystal display can't be promoted to 120Hz with the picture display rate.In general, LCD there is no the problem existence that cathode-ray tube (CRT) need move owing to differ widely with traditional monitor on the structure, and replacing is to drive the time of liquid crystal shutter and time delay of data transmission or the like.Yet it is a lot of that LCD has been lacked than traditional monitor required readiness time, do not need to be used for the long blanking signal of traditional monitor, refers to that especially forward position and back are along signal.Therefore, the available liquid crystal display has also limited the amplification and the expression power of many functions, as described above shown in the example when continuing to use tradition timing standard.
From the above, the available liquid crystal display shows continues to use regularly standard of tradition, if desire to reach wide expenditure in the multiple function practicality (can be from 60Hz to 120Hz) as picture display rate range of choice, increase user's range of choice, then need to spend more cost on the transmission interface or jumbo buffer of high bandwidth; Negative side, under the situation of the buffer of the transmission interface of built-in same band and amount of capacity, the available liquid crystal display realize many application functions on, all be restricted, can't provide user's variation to select.
Summary of the invention
Therefore, fundamental purpose of the present invention promptly is to provide a kind of method that promotes image display efficiency.
The present invention discloses a kind of method that promotes image display efficiency, include and receive one first frame signal (frame signal), this first frame signal includes one first blanking (blank) signal and one first view data, wherein, this first blanking signal includes one first synchronizing signal (sync), one first rising edge signal (front porch) and one first back along signal (back porch); Separate this first blanking signal and this first view data; Adjust the frame per second of this first view data, to produce an image data temporary; This image data temporary carried out drove processing, to produce one second view data; And one second blanking signal added this second view data, to produce one second frame signal, wherein this second blanking signal includes one second synchronizing signal (sync), one second rising edge signal (front porch) and one second back along signal (back porch).
The present invention discloses a kind of method that promotes image display efficiency in addition, include: receive one first frame signal, this first frame signal includes one first blanking signal and one first view data, wherein, this first blanking signal includes one first synchronizing signal, one first rising edge signal and one first back along signal; Separate this first blanking signal and this first view data; This first view data carried out drove processing, to produce an image data temporary; Adjust the frame per second of this image data temporary, to produce one second view data; And one second blanking signal added this second view data, to produce one second frame signal, wherein this second blanking signal includes one second synchronizing signal, one second rising edge signal and one second back along signal.
The present invention discloses a kind of device that promotes image display efficiency in addition, includes a signal receiving unit, a signal separation unit, a frame per second adjustment unit, one and crosses and drive a unit and a blanking signal processing unit.This signal receiving unit is used for receiving one first frame signal, and this first frame signal includes one first blanking signal and one first view data, and wherein, this first blanking signal includes one first synchronizing signal, one first rising edge signal and one first back along signal.This signal separation unit is used for separating this first blanking signal and this first view data.This frame per second adjustment unit is used for adjusting the frame per second of this first view data, to produce an image data temporary.This is crossed and drives the unit and be used for this image data temporary carried out and drive processing, to produce one second view data.And this blanking signal processing unit is to be used for one second blanking signal is added this second view data, and to produce one second frame signal, wherein, this second blanking signal includes one second synchronizing signal, one second rising edge signal and one second back along signal.
The present invention discloses a kind of device that promotes image display efficiency in addition, include: a signal receiving unit, be used for receiving one first frame signal, this first frame signal includes one first blanking signal and one first view data, wherein, this first blanking signal includes one first synchronizing signal, one first rising edge signal and one first back along signal; One signal separation unit is used for separating this first blanking signal and this first view data; One crosses and to drive the unit, is used for this first view data carried out driving processing, to produce an image data temporary; One frame per second adjustment unit is used for adjusting the frame per second of this image data temporary, to produce one second view data; And a blanking signal processing unit, be used for one second blanking signal is added this second view data, to produce one second frame signal, wherein this second blanking signal includes one second synchronizing signal, one second rising edge signal and one second back along signal.
Description of drawings
Fig. 1 is used to promote the method flow diagram of image display efficiency for the present invention.
Fig. 2 is used to promote the process flow diagram of the system and device of image display efficiency for the present invention.
Fig. 3 for the present invention according to the recombinate synoptic diagram of a frame signal of first embodiment of Fig. 1 flow process.
Fig. 4 is used to promote the functional block diagram of the system and device of image display efficiency for the first embodiment of the present invention.
Fig. 5 is used for the systemic-function calcspar that a digital indicator promotes image display efficiency for second embodiment of the invention.
Fig. 6 is the synoptic diagram of the signal form of an existing frame signal.
Fig. 7 is used for the systemic-function calcspar that a display promotes image display efficiency for second embodiment of the invention.
The reference numeral explanation
10,50 flow processs
100,102,104,106,108,110,500,502,504,506,508,510,512,514,516 steps
200,700 system and devices
210,710 signal receiving units
220,720 signal separation units
230 graphics processing units
730 data copy cell
740 drive the unit excessively
240,750 blanking signal processing units
760 transmission interfaces
Sf, Bp, Fp, Sync, Sbk, Sf ', Bp ', Fp ', Sbk ', Sf1 ', Sf2 ', Htotal1～HtotalN, Hsync1～HsyncN, Hbp1～HbpN, Hfp1～HfpN, Hbk1～HbkN, Vtotal, Vsync, Vbp, Vfp, Hbk1 ', Vtotal ' signal
Vdata, Vdata ', Hdata1～HdataN, Hdata1 '～HdataN ', Hdatac1～HdatacN, Hdatac1 '～HdatacN ' view data
Embodiment
The present invention is by separating the action of primitive frame signal and reduction blanking signal (reduced blanking), reach the effectiveness that lowers system resources consumption and save transmission bandwidth.
Please refer to Fig. 1, Fig. 1 is used to promote the process flow diagram of the method flow 10 of image display efficiency for the present invention.Flow process 10 comprises following steps:
Step 100: beginning.
Step 102: receive one first frame (frame) signal.
Step 104: one first blanking (blank) signal and one first view data of separating this first frame signal.
Step 106: to this first view data carries out image processing, to produce one second view data.
Step 108: one second blanking signal is added this second view data, to produce one second frame signal.
Step 110: finish.
By flow process 10 as can be known, the present invention extracts a view data from frame signal after receiving a frame signal, and it is carried out required Flame Image Process, at last with treated view data and blanking signal reorganization, to form a new frame signal.In step 102, first frame signal comprises two parts, and one is one first blanking signal, and another partly is one first view data.And first blanking signal comprises three parts, be one first synchronizing signal (sync), one first rising edge signal (front porch) and one first back along signal (back porch), wherein, first forward position and back are along there is no any information of carrying in the signal.First frame signal is a digital signal and meets the regularly frame signal form under the standard of a traditional images, as the broad sense of VESA (Video Electronics Standards Association) formula (Generalized Timing Formula regularly; GTF) standard that is provided or the like, the form of first view data are then looked type that transmitting terminal uses and different, can be a red, green, blue (RGB) signal or colour difference signal or the like.In addition, first synchronously, first forward position and back be along none graded of arrangement of signal, and can be seated in dispersedly before and after first picture signal, as long as first synchronizing signal does not link to each other with first picture signal.In step 106, the Flame Image Process of being implemented can be first view data carried out and drives (overdrive) and handle, and producing an image data temporary, and adjusts the frame per second (frame rate) of this image data temporary, to produce this second view data, at last the result is gone out to transport to step 108.Cross wherein that to drive be a lcd technology, can increase the liquid crystal molecule reverse speed, make to show that the required reaction time shortens.This technology should be that industry has now and is commonly used, does not repeat them here.In addition, in step 106, cross the action front and back of driving and adjust frame per second and have exchangeability, visual user's demand displacement execution order.In step 108, the form of second blanking signal is similar to first blanking signal, also include one second synchronizing signal (sync), one second rising edge signal (front porch) and one second back along signal (backporch), its difference be second forward position and back along the length of signal all respectively than first forward position and the weak point of back along signal.In the prior art, promptly it is carried out the associated picture processing owing to first frame signal is not carried out separating action, meaning i.e. first blanking signal also participates in this processing process, causes prior art will use extra system resource and space, first blanking signal is made image handle.In addition, first forward position and back there is no along signal that meet traditional specifications comprise any information, it is done the image processing there is no its meaning, cause the waste of system resource and memory headroom.In addition, under traditional specifications, first forward position and back are used for cooperating the technology of tradition application required along the signal length of signal, for the present invention, Chief Signal Boatswain is spent to tediously long, to such an extent as in the output frame signal process, take the bandwidth of transmission interface, reduce bandwidth efficiency.To this, the present invention utilizes the second short blanking signal of signal length to solve this problem.Therefore, the present invention is by separating the action of primitive frame signal and reduction blanking signal (reduced blanking), reach the effectiveness that lowers system resources consumption and save transmission bandwidth.
Then, please refer to Fig. 2, Fig. 2 is the functional block diagram of system and device 200 of the present invention.System and device 200 is in order to realization flow 10, and it includes a signal receiving unit 210, a signal separation unit 220, a graphics processing unit 230 and a blanking signal processing unit 240.Signal receiving unit 210 is used for receiving first frame signal, and exports signal separation unit 220 to.Signal separation unit 220 is used for separating first blanking signal and first view data, and exports first view data to graphics processing unit 230.Graphics processing unit 230 can comprise multiple image processing step, drives and adjust frame per second as crossing, and is used for first view data is carried out Flame Image Process, exports result second view data to blanking signal processing unit 240 at last.240 pairs second view data of blanking signal processing unit are processed, and second blanking signal and second view data are recombinated to produce one second frame signal.
Please refer to Fig. 3, Fig. 3 is the synoptic diagram according to flow process 10 reorganization one frame signal.The present invention receives a frame signal Sf earlier.Frame signal Sf meets regularly standard of a traditional images, and an one blanking signal Sbk and a view data Vdata are as shown in the figure.One back then is a rising edge signal Fp and a synchronous signal Sync after the view data Vdata in regular turn before being connected in view data Vdata along signal Bp.Then, by digital processing signal method divide image data Vdata and blanking signal Sbk.After the Signal Separation, on the one hand, view data Vdata is carried out driving and adjusting frame per second, exported a picture signal Vdata ' at last; On the other hand, cut down the signal length of back, and export a new back respectively along signal Bp ' and rising edge signal Fp ' along signal Bp and rising edge signal Fp.After treating that above-mentioned action is all finished,, the back is reassembled into a new frame signal Sf ' along signal Bp ', picture signal Vdata ', rising edge signal Fp ' and synchronizing signal Sync according to the signal ordering of frame signal Sf.By as can be known aforementioned, owing to separated view data Vdata and blanking signal Sbk, when carries out image processing was moved, blanking signal Sbk there is no participation process, can save the resource and the time of Flame Image Process.In addition, via cutting down front and back after the signal length of signal Fp ' and Bp ', the overall signal length of frame signal Sf ' is shorter than frame signal Sf.Come the transmission frame signal at the less transmission interface of system's utilized bandwidth, or transmission interface need transmit once under the situation of a plurality of different signals, frame signal Sf ' saves the required bandwidth of transmission than frame signal Sf, and then the performance of elevator system.
In the prior art, owing to there is not the isolated frame signalizing activity, under the bigger situation of frame signal data volume, related blanking signal is carried out Flame Image Process will make huge resource of system consumption and memory size.In addition, before frame signal exported transmission interface to, action do to be cut down along signal in also unmatchful front and back and since front and back along signal itself do not have carry any available information and length long, as if directly transmitting the bandwidth efficiency that original frame signal will be wasted transmission interface.Therefore, compared to prior art, the present invention reaches the effectiveness of attenuating system resources consumption and saving transmission bandwidth, and then makes system have better expression power by separating the action of primitive frame signal and reduction blanking signal (reduced blanking).
Then, please refer to Fig. 4, the coherent signal synoptic diagram when Fig. 4 is system and device 200 realization Fig. 3 reassembled frame signals.Signal receiving unit 210 is used for received frame signal Sf, and exports signal separation unit 220 to.Signal separation unit 220 is responsible for differentiating blanking signal Sbk and the picture signal Vdata positions among the frame signal Sf, separates this two signal, and distinguishes output image data Vdata and blanking signal Sbk to graphics processing unit 230.Graphics processing unit 230 is responsible for view data Vdata was carried out actions such as driving and adjust frame per second, to produce view data Vdata ', also it is exported to blanking signal processing unit 240.Carry out in the image processing process at view data Vdata, blanking signal processing unit 240 is carried out the length reduction to forward position among the blanking signal Sbk and back along signal Fp and Bp earlier, and producing new blanking signal Sbk ' respectively, its forward position and back are Fp ' and Bp ' along signal.At last, after blanking signal processing unit 240 receives view data Vdata ', begin blanking signal Sbk ' and view data Vdata ' are carried out merger and reorganization, and, obtain a frame signal Sf ' according to the signal spread pattern of frame signal Sf.In addition, system and device 200 can be by transmission interface output frame signal Sf '.
With a display is example, please refer to Fig. 5, and Fig. 5 is used for the process flow diagram that a digital indicator promotes the method flow 50 of image display efficiency for second embodiment of the invention.Flow process 50 comprises the following step:
Step 500: beginning.
Step 502: receive a frame signal Sf, frame signal Sf includes a horizontal line signal Htotal1～HtotalN and a vertical signal Vtotal;
Step 504: horizontal image data Hdata1～HdataN and the horizontal blanking signal Hbk1～HbkN of separation of level line signal Htotal1～HtotalN.
Step 506: levels of replication view data Hdata1～HdataN, to produce many group horizontal image data Hdatac1～HdatacN.
Step 508: horizontal image data Hdata1～HdataN and Hdatac1～HdatacN were driven, to produce horizontal image data Hdata1 '～HdataN ' and Hdatac1 '～HdatacN ' respectively.
Step 510: cut down after the horizontal rising edge signal Hfp1 of horizontal line signal Htotal1 and the level signal length, to produce a horizontal blanking signal Hbk1 ' along signal Hbp1; Reach the vertical rising edge signal Vfp that cuts down a vertical signal Vtotal and reach the signal length of vertical back, to produce a vertical signal Vtotal ' along signal Vbp.
Step 512: with horizontal blanking signal Hbk1 ' adding horizontal image data Hdata1 '～HdataN ' and horizontal image data Hdatac1 '～HdatacN ', and with vertical signal Vtotal ' reorganization, reach Sf2 ' to produce frame signal Sf1 ' respectively.
Step 514: use Low Voltage Differential Signal technology (Low Voltage DifferentialSignaling by one; LVDS) transmission interface, output frame signal Sf1 ' and Sf2 '.
Step 516: finish.
In step 502, the details of frame signal Sf as shown in Figure 6.As shown in Figure 6, frame signal Sf comprises N horizontal line signal Htotal and a vertical signal Vtotal, and the signal length of each horizontal line signal Htotal is all identical with its internal signal arrangement mode.Each horizontal line signal Htotaln comprises a horizontal image data Hdatan and a horizontal blanking signal Hbkn.Each horizontal blanking signal Hbkn comprises after a horizontal rising edge signal Hfpn, the level along a signal Hbpn and a horizontal-drive signal Hsyncn.Numbering 1～N shown in the wherein alphabetical n representative graph.And vertical signal Vtotal comprises a vertical data Vdata and a vertical blanking signal Vbk, and vertical blanking signal Vbk comprises a vertical rising edge signal Vfp, a vertical back along a signal Vbp and a vertical synchronizing signal Vsync.As seen from the figure, the horizontal component of frame signal Sf can alternately be arranged institute by the horizontal image data Hdata1～HdataN of a sequence and horizontal blanking signal Hbk1～HbkN and constitutes.Red, green, blue view data with a resolution 1280 * 1024 (pixel * row) is an example, and horizontal image data Hdata1～HdataN all comprises the view data of 1280 pixels, and each pixel comprises the red, green, blue image signal data again.And because the view data of resolution 1280 * 1024 comprises 1024 horizontal line data, so the N size is 1024.In addition, according to traditional images timing standard, the length (comprising horizontal blanking signal) of each bar horizontal line signal Htotal is 1688 pixels, and the length of vertical signal Vtotal is 1066 row (line).Then, in step 504, behind the horizontal image data Hdata1～HdataN and horizontal blanking signal Hbk1～HbkN separation of horizontal line signal Htotal1～HtotalN, keep all horizontal image data and horizontal blanking signal Hbk1.The purpose of replication actions will be narrated after a while in detail for promoting frame per second in the step 506.In step 508, horizontal image data Hdata1～HdataN and Hdatac1～HdatacN were driven, to produce Hdata1 '～HdataN ' and Hdatac1 '～HdatacN ' respectively.Cross and drive to a kind of according to the action of view data to the instantaneous increasing voltage of liquid crystal molecule, its detailed operation principle field for this reason knows that usually the knowledgeable has the knack of, and does not repeat them here.In step 510,, represent module so only utilize horizontal blanking signal Hbk1 to work as one because the signal length and the spread pattern of every group of horizontal blanking signal are all identical.In step 512, arrangement mode according to horizontal line signal Htotal1, horizontal blanking signal Hbk1 ' is added horizontal image data Hdata1 '～HdataN ' and Hdatac1 '～HdatacN ' respectively, can obtain new a plurality of horizontal line signal Htotal1 '～HtotalN ' and Htotalc1 '～HtotalcN '.Then, two groups of out of the ordinary again and vertical signal Vtotal ' reorganization of horizontal line signal produce two frame signal Sf1 ' and Sf2 '.Therefore, frame signal Sf1 ' and Sf2 ' have only its signal length different less than frame signal Sf and its horizontal image data content all similar in appearance to frame signal Sf.In step 514, transmission interface is used for the output frame signal to display drive apparatus, and the maximum bandwidth of employed Low Voltage Differential Signal transmission interface is between 85～90MHz, and it does not repeat them here by the ripe prior art of an industry.
What pay special attention to is that step 506 and 508 has exchangeability, promptly also can drive Hdata1～HdataN earlier, duplicates the output data after driving again.In addition, present embodiment is an example once to receive a frame signal, looks user's demand, also can once receive many framings signal.Because present embodiment is used for a digitizing display, as LCD TV or plasm TV or the like, therefore the frame signal that receives often is a crossfire signal.For reaching the purpose that frame per second promotes, present embodiment is before receiving the next frame signal, and first duplicated frame signal Sf is inserted between frame signal Sf and the next frame signal this frame signal of duplicating.Then, display shortens the reproduction time of each frame signal again, can reach the lifting of frame per second.
By as can be known aforementioned, present embodiment is that the horizontal image data in the horizontal component of frame signal are separated with horizontal blanking signal, and duplicate all horizontal image data, again two parts of horizontal image data were carried out and driven, then only cut down one a group of horizontal blanking signal and a vertical blanking signal, horizontal image data after the two parts of mistakes of recombinating are driven by transmission interface, are exported two frame signals at last to generate two frame signals.Yet, in the prior art,, during the duplicated frame action, can duplicate all horizontal blanking signal Hbk1-HbkN owing to lack the separating action of step 504, also therefore expend the capacity of system handles resource and committed memory.In addition, prior art does not also have the reduction action of carrying out step 510, during the output frame signal, because the relation of duplicated frame will can't promote frame per second smoothly for fear of the bandwidth constraints of transmission interface.View data with a resolution 1280 * 1024 is an example.According to as can be known aforementioned, the total data amount that prior art should be transmitted is 1688 * 1066, and the present invention can be reduced to 1360 * 1040 with the total data amount by step 510.As frame per second is promoted to 120Hz, when exporting frame signal to the Low Voltage Differential Signal transmission interface, the formula that utilizes prior art to carry can calculate the data transfer rate size, and its formula is as follows:
The whole pixels of data transfer rate=level * vertical all pixel * picture display rate ÷ LVDS number of active lanes
The data transfer rate of prior art=1688 * 1066 * 120 ÷ 2=107.96Mhz
The data transfer rate of present embodiment=1360 * 1040 * 120 ÷ 2=84.86Mhz
The maximum bandwidth of low voltage differential letter transmission interface is 85Mhz to 90MHz, and the present invention can meet demand, and prior art then can't realize the purpose that frame per second promotes, and the transmission interface that maybe needs to change higher rate is reached.Therefore, the present invention reduces the capacity of system handles resource requirement and committed memory by separating the primitive frame signal, also by cutting down the action of blanking signal (reduced blanking), lowers the required bandwidth of transmission, to reach the purpose that promotes frame per second.
Please refer to Fig. 7, Fig. 7 is the functional block diagram of the system and device 700 of corresponding diagram 5.System and device 700 comprises a signal receiving unit 710, a signal separation unit 720, a data copy cell 730, and crosses and drive unit 740, a blanking signal processing unit 750 and a transmission interface 760.System and device 700 can be used for LCD or plasm TV digitizing displays such as (Plasma Display).Signal receiving unit 710 can be the composite set of an antenna and analog/digital converter (Analog to Digital Converter), can receive satellite or broadcast singal; Or one have 15 the lead-in wire connectors (15-pinD-sub), can receive the red, green, blue signal; Or an aberration terminal, can receive colour difference signal (as the signal of DVD player output).Signal receiving unit 710 is used for received frame signal Sf, and exports signal separation unit 720 to.If the frame signal Sf that transmitting terminal sent is a simulating signal, signal receiving unit 710 can transfer it to a digital signal.After signal separation unit 720 receives frame signal Sf, the horizontal component signal of frame signal Sf is made the separation of image data and blanking signal that is horizontal image data Hdata1～HdataN and horizontal blanking signal Hbk1～HbkN among separation of level line signal Htotal1～HtotalN.After separation finished, Hdata1～HdataN were to data copy cell 730 for signal separation unit 720 output horizontal image data, and output horizontal blanking signal Hbk1 and vertical signal Vtotal are to blanking signal processing unit 750.Data copy cell 730 duplicates horizontal image data Hdata1～HdataN to produce identical horizontal image data Hdatac1～HdatacN.Cross and drive 740 of unit horizontal image data Hdata1～HdataN and Hdatac1～HdatacN were driven, produce horizontal image data Hdata1 '～HdataN ' and Hdatac1 '～HdatacN ' respectively.When duplicating and drive excessively, blanking signal processing unit 750 is cut down horizontal blanking signal Hbk1 and vertical signal Vtotal by signal separation unit 720 outputs earlier.By the signal length along signal Vbp after reaching vertically along signal Hbp1, vertical rising edge signal Vfp after horizontal rising edge signal Hfp1, the level is shortened, blanking signal processing unit 750 produces new horizontal blanking signal Hbk1 ' and vertical signal Vtotal '.After finishing the blanking signal reduction, 750 pairs of levels of blanking signal processing unit and vertical signal are recombinated respectively.At first, horizontal signal form according to frame signal Sf, as horizontal line signal Htotal1, horizontal blanking signal Hbk1 ' is respectively added horizontal image data Hdata1 '～HdataN ' and Hdatac1 '～HdatacN ', and recombinate with vertical signal Vtotal ' respectively, to produce two frame signal Sf1 ' and Sf2 '.At last, blanking signal processing unit 750 exports frame signal Sf1 ' and Sf2 ' to transmission interface 760.
For aforesaid assembly of the present invention and signal, what pay special attention to is that frame signal can be multidimensional digital signal, is not limited to one dimension or 2D signal, can get final product with the digital form separation signal.Flame Image Process of the present invention was not limited to drive and adjust frame per second, can implement relevant Flame Image Process action according to user's purpose.In addition, as user's needs, second forward position or back can add information along signal, and differing is decided to be blank signal.
In sum, the present invention separates the blanking signal and the view data of a frame signal, and blanking signal is cut down, and view data is carried out Flame Image Process, and recombinate blanking and data-signal produce the frame signal that a signal length is lacked (or semaphore is less) again.Because it is view data that the present invention carries out the object of Flame Image Process, but not the entire frame signal, system can save and handle resource and memory headroom.In addition, the present invention is by shortening blanking signal, and the frame signal that is produced can transmit under the less transmission interface of maximum bandwidth, to reach the purpose that frame per second promotes.In brief, the present invention is by separating the action of primitive frame signal and reduction blanking signal (reduced blanking), reach the effectiveness that lowers system resources consumption and save transmission bandwidth.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (12)
1. method that promotes image display efficiency includes:
Receive one first frame signal, this first frame signal includes one first blanking signal and one first view data, and wherein, this first blanking signal includes one first synchronizing signal, one first rising edge signal and one first back along signal;
Separate this first blanking signal and this first view data;
Adjust the frame per second of this first view data, to produce an image data temporary;
This image data temporary carried out drove processing, to produce one second view data; And
One second blanking signal is added this second view data, and to produce one second frame signal, wherein this second blanking signal includes one second synchronizing signal, one second rising edge signal and one second back along signal.
The method of claim 1, wherein the length of this second rising edge signal less than the length of this first rising edge signal.
The method of claim 1, wherein this second back along the length of signal less than the length of this first back along signal.
4. method that promotes image display efficiency includes:
Receive one first frame signal, this first frame signal includes one first blanking signal and one first view data, and wherein, this first blanking signal includes one first synchronizing signal, one first rising edge signal and one first back along signal;
Separate this first blanking signal and this first view data;
This first view data carried out drove processing, to produce an image data temporary;
Adjust the frame per second of this image data temporary, to produce one second view data; And
One second blanking signal is added this second view data, and to produce one second frame signal, wherein this second blanking signal includes one second synchronizing signal, one second rising edge signal and one second back along signal.
5. method as claimed in claim 4, wherein, the length of this second rising edge signal is less than the length of this first rising edge signal.
6. method as claimed in claim 4, wherein, this second back along the length of signal less than the length of this first back along signal.
7. device that promotes image display efficiency includes:
One signal receiving unit is used for receiving one first frame signal, and this first frame signal includes one first blanking signal and one first view data, and wherein, this first blanking signal includes one first synchronizing signal, one first rising edge signal and one first back along signal;
One signal separation unit is used for separating this first blanking signal and this first view data;
One frame per second adjustment unit is used for adjusting the frame per second of this first view data, to produce an image data temporary;
One crosses and to drive the unit, is used for this image data temporary carried out driving processing, to produce one second view data; And
One blanking signal processing unit is used for one second blanking signal is added this second view data, and to produce one second frame signal, wherein this second blanking signal includes one second synchronizing signal, one second rising edge signal and one second back along signal.
8. device as claimed in claim 7, wherein, the length of this second rising edge signal is less than the length of this first rising edge signal.
9. device as claimed in claim 7, wherein, this second back along the length of signal less than the length of this first back along signal.
10. device that promotes image display efficiency includes:
One signal receiving unit is used for receiving one first frame signal, and this first frame signal includes one first blanking signal and one first view data, and wherein, this first blanking signal includes one first synchronizing signal, one first rising edge signal and one first back along signal;
One signal separation unit is used for separating this first blanking signal and this first view data;
One crosses and to drive the unit, is used for this first view data carried out driving processing, to produce an image data temporary;
One frame per second adjustment unit is used for adjusting the frame per second of this image data temporary, to produce one second view data; And
One blanking signal processing unit is used for one second blanking signal is added this second view data, and to produce one second frame signal, wherein this second blanking signal includes one second synchronizing signal, one second rising edge signal and one second back along signal.
11. device as claimed in claim 10, wherein, the length of this second rising edge signal is less than the length of this first rising edge signal.
12. device as claimed in claim 10, wherein, this second back along the length of signal less than the length of this first back along signal.
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| CN200710008013A CN101241665B (en) | 2007-02-05 | 2007-02-05 | Method for improving image display efficiency and its related device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1609942A (en) * | 2003-10-20 | 2005-04-27 | 富士通显示技术株式会社 | Liquid crystal display device |
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| CN1609942A (en) * | 2003-10-20 | 2005-04-27 | 富士通显示技术株式会社 | Liquid crystal display device |
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| JP特开2001-94874A 2001.04.06 |
| JP特开2002-156961A 2002.05.31 |
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