CN101668149B - Image processing apparatus, image processing method and image display system - Google Patents
Image processing apparatus, image processing method and image display system Download PDFInfo
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Abstract
The present invention relates to a display apparatus and method for presenting a moving image of less degradation to an observer who is a person viewing a displayed moving image, on the basis of human visual characteristics without unnecessarily increasing the frame rate. A control signal generation section 125 and data line driving circuits 133-1 to 133-4 control display so as to display a moving image made of 105 or more frames/sec on an LCD 131. The LCD 131 displays a moving image made of 105 or more frames/sec on the basis of the control of the control signal generation section 125 and the data line driving circuits 133-1 to 133-4. In the LCD 131, the display of each pixel on the screen is maintained during each frame period. The present invention can be applied to image display systems.
Description
The application is to be that June 9, application number in 2005 are that 200580001091.X, name are called the dividing an application of application for a patent for invention of " display device and method " applying date.
Technical field
This present invention relates to a kind of display device and method, particularly a kind of display device and method that is suitable for showing moving image.Particularly, the present invention relates to a kind of image processing equipment, image processing method and display device.
Background technology
Existence is by improving the signal processing technology that is used for image display device and the needs that Driving technique improves image quality.
Generally speaking, can improve by also level and smooth its texture of the resolution that increases image the picture quality of image.The pixel of point (point) take the expression composing images is expressed the amount of information of image as unit.The pixel count of image is expressed with the number of the horizontal and vertical point of image, and for example 800 * 600 or 1024 * 768.More particularly, pixel (point) number is more, and image texture is just larger with regard to the amount of information of more level and smooth and composing images.
In order to show image with high-resolution, (for example there is a kind of technology, refer to Patent Document 1), it is by for example using two displays 1 and 2 in order to make display 1 show image in normal monotype, and in multi-mode, make each display 1 and 2 show respectively left side and the right-hand part of image, thus in multi-mode with only compare the high resolution of twice with the system of a display and show image.
[patent documentation 1] Japan patent applicant announce number flat-10-124024
If show image with the resolution that increases, then the amount of information of composing images increases, thereby the data volume that will be transferred to display 1 or 2 increases, and needs to improve message transmission rate.Therefore, this System Construction is become the data volume of each point by reducing display 1 and 2 and the conversion by signal data that processing execution reduces, carries out image data transfer and do not improve message transmission rate.
In addition, especially, can improve by improving frame rate the picture quality of moving image, wherein frame rate is the number of times that per second upgrades screen.
For example, when when using projecting apparatus with the moving image projection and being presented on the screen, projecting apparatus is display frame image line by line by executive level scanning on basis line by line, and after all row that scanned a picture frame, begin to scan the view data of subsequent frame, thereby show moving image.
Summary of the invention
[problem to be solved by this invention]
As mentioned above, especially, can improve by improving frame rate the picture quality of moving image.Yet, in order to carry out Graphics Processing according to high frame rate, need to improve the processing speed of the drive circuit that is used for the driving display unit, in addition, need to improve the reaction speed of the light quantity modulation element of determining image intensity.The method is difficult technically, and causes cost to improve.
Although it is known can improving by improving frame rate the picture quality of moving image, in fact can not the relation of research between the picture quality of frame rate and moving image in the situation that improves frame rate.Therefore, not clear, whether might improve frame rate by unlimited degree ground and come unlimited degree ground to improve the picture quality of moving image.
Certainly, can not understand quantitatively in the relation between frame rate and the moving image in the situation that improves frame rate.
Therefore, the inventor notices the frame rate of digital cinema format of future generation, and has studied its necessary restriction according to visual characteristic.
Think that before this oculomotor speed of tracking that is known as level and smooth tracking is consistent with the movement velocity of sensation target.Westheimer states that eyes are with the speed motion (Westheimer, G., A.M.A.Arch.Ophthal.52, pp.932-941,1954) identical with the sensation target speed that is not higher than 30 degree/second.
Yet studies have shown that of back followed the trail of oculomotor speed almost all cases less than the speed of sensation target.The people such as Meyer have stated that the tracking speed of eyes approximately is 0.87 times about sensation target speed.(Meyer, the people such as C.H., Vision Res.Vol.25, No.4, pp.561-563,1985).
Although Meyer reports, has obtained maximum tracking speed restriction 100 degree/second, Meyer has stated that such tracking speed is the result who obtains from skilled tested object, and general tested object can not carry out such tracking.The condition of this experiment is 80 centimetres visible sensation distance, and this is different from the visual environment of cinema greatly.Sensation target is the hot spot that moves by galvanometer, and Meyer does not discuss the spatial frequency of sensation target.
In Japan, the NHK report example (people such as Yasushi Tadokoro of frame rate exist to be discussed, NHKTechnical Report, September (1968), pp422-426,1968), but screen height), high-high brightness 30fl (102.78cd/m the condition of this report is visible sensation distance 7H (H:
2) 14 inches monitors, and still do not consider the condition of cinema.In addition, this report is concluded, owing to larger motion do not occur in general content, so 60Hz or higher field frequency are unnecessary.Miyahara is 14 inches monitors, visible sensation distance 4H and high-high brightness 400cd/m to the experiment condition about the dynamic vision sensitivity of oscillating vision target
2About the experiment of visual characteristic mainly is to implement under the visual environment condition such as relatively short distance and relative high brightness.
Therefore, in inventor's visual environment at the cinema, that is, and high-high brightness 40cd/m
2With visible sensation distance 5 to 15m, the dynamic space frequency characteristic of eyes has been carried out pilot study.Important to moving image quality research of depending on such dynamic space frequency characteristic, because such research causes greatly considering the conventional form for frame rate.
In this research process, in fact the inventor has studied the relation between the frame rate and moving image quality in higher frame rate, and has confirmed human visual characteristic.
The present invention proposes in view of said circumstances, and is intended to so that might in the situation that needn't improve frame rate less deteriorated moving image be presented to the observer based on human visual system, and it is the people who watches shown moving image.
[mode that addresses this problem]
In one aspect of the invention, provide a kind of image processing equipment, comprising: control assembly, be used for n the data line drive circuit that control is included in display device, data line drive circuit drives n sub-pixel; Wherein this control assembly is so that show moving image, so that: have the frame information of the moving image of the first frame rate, show that with the second frame rate the second frame rate is the 1/n of the first frame rate; And n the sub-pixel that is included in each pixel sequentially driven with a time shift, and described time shift is the 1/n with display time interval of the single frame of the second frame rate.
In another aspect of this invention, a kind of image processing method is provided, comprise: n the data line drive circuit that control is included in the display device drives n sub-pixel, so that demonstration moving image, so that: the frame information with moving image of the first frame rate, show that with the second frame rate the second frame rate is the 1/n of the first frame rate; And n the sub-pixel that is included in each pixel sequentially driven with a time shift, and described time shift is the 1/n with display time interval of the single frame of the second frame rate.
In another aspect of this invention, a kind of software product is provided, for the treatment of image, comprise: n the data line drive circuit that control is included in the display device drives n sub-pixel, so that demonstration moving image, so that: have the frame information of the moving image of the first frame rate, show that with the second frame rate the second frame rate is the 1/n of the first frame rate; And n the sub-pixel that is included in each pixel sequentially driven with a time shift, and described time shift is the 1/n with display time interval of the single frame of the second frame rate.
In another aspect of this invention, provide a kind of display device, comprising: display unit, be used for showing moving image, described display unit comprises for n the data line drive circuit that drives each sub-pixel; And control assembly, be used for n the data line drive circuit that control is included in display unit; Wherein this control assembly is so that show moving image, so that: have the frame information of the moving image of the first frame rate, show that with the second frame rate the second frame rate is the 1/n of the first frame rate; And n the sub-pixel that is included in each pixel sequentially driven with a time shift, and described time shift is the 1/n with display time interval of the single frame of the second frame rate.
The first display device of the present invention is characterised in that and comprises: display control unit spare is used for control display, in order to display unit is shown by being not less than the moving image that consist of 105 frame/seconds; And display unit, be used for showing by being not less than the moving image that consist of 105 frame/seconds the wherein demonstration of each pixel on maintenance screen during each frame period based on the control of display control unit spare.
Display control unit spare control display, in order to display unit is shown by being not less than the moving image that consist of 230 frame/seconds, and display unit can show by being not less than the moving image that consist of 230 frame/seconds based on the control of display control unit spare.
Display control unit spare control display, in order to display unit is shown by being not more than the moving image that consist of 480 frame/seconds, and display unit can show by being not more than the moving image that consist of 480 frame/seconds based on the control of display control unit spare.
Display control unit spare control display, in order to display unit is shown by the moving image that consists of for 120 frame/seconds, and display unit can show the moving image that is made of 120 frame/seconds based on the control of display control unit spare.
Display control unit spare control display, in order to display unit is shown by the moving image that consists of for 240 frame/seconds, and display unit can show the moving image that is made of 240 frame/seconds based on the control of display control unit spare.
Display control unit spare control display, in order to display unit is shown by the moving image that consists of for 250 frame/seconds, and display unit can show the moving image that is made of 250 frame/seconds based on the control of display control unit spare.
Display control unit spare control display, in order to display unit is shown by the moving image that consists of for 360 frame/seconds, and display unit can show the moving image that is made of 360 frame/seconds based on the control of display control unit spare.
The first display packing of the present invention is a kind of display packing of the display device be used to being equipped with display unit, wherein in display unit, in the demonstration that keeps each pixel on the screen during each frame period, and the method is characterized in that and comprise demonstration control step: control display, in order to display unit is shown by being not less than the moving image that consist of 105 frame/seconds.
In showing the control step, control display is in order to show by being not less than the moving image that consist of 230 frame/seconds display unit.
In showing the control step, control display is in order to show by being not more than the moving image that consist of 480 frame/seconds display unit.
In showing the control step, control display is in order to show by the moving image that consists of for 120 frame/seconds display unit.
In showing the control step, control display is in order to show by the moving image that consists of for 240 frame/seconds display unit.
In showing the control step, control display is in order to show by the moving image that consists of for 250 frame/seconds display unit.
In showing the control step, control display is in order to show by the moving image that consists of for 360 frame/seconds display unit.
The second display device of the present invention is characterised in that and comprises: display control unit spare is used for control display, in order to display unit is shown by being not less than the moving image that consist of 105 frame/seconds; And display unit, be used for showing that based on the control of display control unit spare by being not less than the moving image that consist of 105 frame/seconds, this display unit is matrix driving.
Display control unit spare control display, in order to display unit is shown by being not less than the moving image that consist of 230 frame/seconds, and display unit can show by being not less than the moving image that consist of 230 frame/seconds based on the control of display control unit spare.
Display control unit spare control display, in order to display unit is shown by being not more than the moving image that consist of 480 frame/seconds, and display unit can show by being not more than the moving image that consist of 480 frame/seconds based on the control of display control unit spare.
Display control unit spare control display, in order to display unit is shown by the moving image that consists of for 120 frame/seconds, and display unit can show the moving image that is made of 120 frame/seconds based on the control of display control unit spare.
Display control unit spare control display, in order to display unit is shown by the moving image that consists of for 240 frame/seconds, and display unit can show the moving image that is made of 240 frame/seconds based on the control of display control unit spare.
Display control unit spare control display, in order to display unit is shown by the moving image that consists of for 250 frame/seconds, and display unit can show the moving image that is made of 250 frame/seconds based on the control of display control unit spare.
Display control unit spare control display is so that so that display unit shows that by the moving image that consists of for 360 frame/seconds and display unit can show the moving image that is made of 360 frame/seconds based on the control of display control unit spare.
The second display packing of the present invention is the display packing be used to the display device of the display unit that is equipped with matrix driving, and it is characterized in that comprising demonstration control step: control display, in order to display unit is shown by being not less than the moving image that consist of 105 frame/seconds.
In showing the control step, control display is in order to show by being not less than the moving image that consist of 230 frame/seconds display unit.
In showing the control step, control display is in order to show by being not more than the moving image that consist of 480 frame/seconds display unit.
In showing the control step, control display is in order to show by the moving image that consists of for 120 frame/seconds display unit.
In showing the control step, control display is in order to show by the moving image that consists of for 240 frame/seconds display unit.
In showing the control step, control display is in order to show by the moving image that consists of for 250 frame/seconds display unit.
In showing the control step, control display is in order to show by the moving image that consists of for 360 frame/seconds display unit.
In the first display device according to the present invention and the first display packing, control display, in order to display unit is shown by being not less than the moving image that consist of 105 frame/seconds, in this display unit, in the demonstration that keeps each pixel on the screen during each frame period.
In the second display device according to the present invention and the second display packing, control display is in order to show by being not less than the moving image that consist of 105 frame/seconds the display unit of matrix driving.
[advantage of the present invention]
As mentioned above, according to the present invention, might in the situation that needn't improve frame rate less deteriorated moving image be presented to the observer based on human visual system, it is the people who watches shown moving image.
Description of drawings
[Fig. 1] block diagram of the first structure example of image display system of the present invention that has been used for application.
[Fig. 2] is used for the figure of the timing of explanation incoming video signal and outputting video signal.
[Fig. 3] is for the view of the structure example that image display device shown in Figure 1 is described.
[Fig. 4] is for the figure of the renewal rate that the marginal portion that is presented at the moving image on the image display device shown in Figure 3 is described.
[Fig. 5] is used for explanation will process 1 flow chart by the demonstration control that image display system shown in Figure 1 is carried out.
[Fig. 6] block diagram of the second structure example of image display system of the present invention that has been used for application.
[Fig. 7] is used for explanation will process 2 flow chart by the demonstration control that image display system shown in Figure 6 is carried out.
[Fig. 8] is used for the figure of the timing of explanation incoming video signal and outputting video signal.
[Fig. 9] shows the view of the example of the actual scene that Moving Objects and stationary objects coexist together.
[Figure 10] is used for explanation and stares the view of (fixation) condition.
[Figure 11] is used for the view of explanation tracking condition.
[Figure 12] is used for explanation in tracking and the view of observer's identification during staring.
[Figure 13] is used for illustrating under image capture conditions, under display condition and the view of observer's identification under observation condition.
[Figure 14] is used for the view of explanation stroboscopic artifact (strobe artifact).
[Figure 15] is used for explanation view with observer's identification of high frame rate under image capture conditions, under display condition and under observation condition.
[Figure 16] is used for explanation according to the result's of shake (jerkiness) evaluation and test moving image quality view.
[Figure 17] is used for explanation according to the result's of motion blur evaluation and test moving image quality view.
[Figure 18] is used for the view of the structure example of explanation projecting apparatus and screen, and wherein n is the number except 2.
[Figure 19] is used for the view of the timing of explanation incoming video signal and outputting video signal, wherein m=240 and n=4.
[Figure 20] is used for the view of the timing of explanation incoming video signal and outputting video signal, wherein m=250 and n=5.
[Figure 21] is for the figure of the structure of the image display system 101 of explanation use LCD.
[label description]
1... image display system, 11... image signal conversion device, 12... image display device, 21...A/D conversion portion, 22... synchronization signal detection part, 23... frame memory, 24... controller, 25...D/A conversion portion, 27... display control section, 41... scan control part, 43... the display part, 71... image display system, 81... picture signal conversion portion, 91... data separating part, 92... data are preserved part, 94... controller, 93... frame memory, 101... image display system, 111... signal processing, 112... clock/sampling pulse generating portion, 113... image display device, 121...Y/C separation/chroma decoding part, 122...A/D conversion portion, 124... synchronization signal detection part, 125... control signal generating portion, 131...LCD, 133-1 is to the 133-4... data line drive circuit, 134... select lines drive part, 141... liquid crystal cell, 142...TFT, the 143... capacitor.
Embodiment
Below with reference to the accompanying drawings embodiments of the invention are described.
Fig. 1 is the block diagram that the structure of having used image display system 1 of the present invention is shown.Image display system 1 comprises image signal conversion device 11 and image display device 12.Image display system 1 is configured to, and provides the analog picture signal corresponding with moving image to it, processes picture signal in image signal conversion device 11, and the picture signal after will processing offers image display device 12, in order to show this moving image.
The analog picture signal that offers image signal conversion device 11 is offered A/D conversion portion 21 and synchronization signal detection part 22.
The analog picture signal that A/D conversion portion 21 will have frame rate m converts data image signal to, and data image signal is offered frame memory 23.Synchronization signal detection part 22 is from frame rate and the Dot Clock of picture signal detected image signal, and generation vertical synchronizing signal and Dot Clock signal, and vertical synchronizing signal and Dot Clock signal are offered controller 24.Dot Clock is at point of display demonstration inverse of required time.
Be described in the vision signal input and output of frame memory 23 under the control of controller 24 below with reference to Fig. 2.
Suppose that m represents to be input to the frame rate of the incoming video signal S1 of frame memory 23.Also supposition sequentially be input to the frame of frame memory 23 be α frame, α+1 frame, α+2 frames ....When with α frame and α+when 1 frame sequential is input to frame memory 23, controller 24 control frame memories 23, so that 1/2 frame rate with the frame rate that equals incoming video signal S1, the α frame is outputed to D/A conversion portion 25-1 as outputting video signal S2, and so that from the α frame provide that time started a postpones 1/m time started b is provided, α+1 frame is outputed to D/A conversion portion 25-2 as outputting video signal S3.
It is 2/m that the α frame is provided to the time cycle that D/A conversion portion 25-1 adopts, and provides concluding time c to provide the late 1/m of time started b than α+1 frame to D/A conversion portion 25-2.After α+1 frame, α+2 frames and α+3 frame sequentials are input to frame memory 23, and controller 24 control frame memories 23, so that with providing mutually continuously (namely of α frame, providing time c), 1/2 frame rate with the frame rate that equals incoming video signal S1 offers D/A conversion portion 25 with α+2 frames as outputting video signal S2.Similarly, controller 24 from α+2 frames provide time started c to postpone 1/m and equal α+1 frame concluding time is provided time started d is provided, α+3 frames are offered D/A conversion portion 25-2 as outputting video signal S3.
The timing offset that provides between outputting video signal S2 and the outputting video signal S3 is determined by the vertical synchronizing signal of incoming video signal S1.More particularly, as shown in Figure 2, the time period between the time started f of providing that time started a and outputting video signal S3 are provided of outputting video signal S2 equals the frame period of incoming video signal S1.Based on the vertical synchronizing signal that provides from synchronization signal detection part 22, controller 24 control outputting video signal S2 provide regularly to D/A conversion portion 25, and outputting video signal S3 providing regularly to D/A conversion portion 25-2.
Therefore, controller 24 control frame memories 23, so that 1/2 frame rate m/2 with the frame rate m that equals incoming video signal S1, on basis frame by frame alternately, respectively outputting video signal S2 and outputting video signal S3 are offered D/A conversion portion 25-1 and D/A conversion portion 25-2, wherein take such mode, namely the time started that provides that each frame of time started with respect to another is provided of each frame of one of outputting video signal S2 and S3 is offset half (1/m) that a frame of exporting provides the time (2/m).
Get back to the explanation of image display system shown in Figure 11.
D/A conversion portion 25-1 converts the data image signal that provides to analog picture signal, and analog picture signal is offered the scan control part 41-1 of image display device 12.D/A conversion portion 25-2 converts the data image signal that provides to analog picture signal, and analog picture signal is offered the scan control part 41-2 of image display device 12.
Based on the information that provides from controller 24, the moving image of display control section 27 control image display devices 12 shows, so as with top with reference to figure 2 described similar timings, show the two field picture corresponding with outputting video signal S2 and S3.
As above described with reference to figure 2, the frame rate of each among outputting video signal S2 and the outputting video signal S3 equal incoming video signal S1 frame rate 1/2.More particularly, the Dot Clock of each among outputting video signal S2 and the outputting video signal S3 equal incoming video signal S1 Dot Clock 1/2.Based on the information that is associated from the output of the vision signal of frame memory 23 and provides from controller 24, display control section 27 is carried out control, so as the Dot Clock that the outputting video signal S2 that is presented on the image display device 12 and each the Dot Clock among the outputting video signal S3 is become equal incoming video signal S1 1/2.
When needing, driver 28 can be connected to controller 24.Disk 31, CD 32, magneto optical disk 33 or semiconductor memory 34 are installed in the driver 28, in order to transmit and reception information.
Scan control part 41-1 is provided the analog video signal corresponding with outputting video signal S2, wherein, is as above reading this analog video signal with reference to figure 2 described timings from frame memory 23, and is converting thereof into analog signal by D/A conversion portion 25-1.Similarly, scan control part 41-2 is provided the analog video signal corresponding with outputting video signal S3, wherein, as above reading this analog video signal with reference to figure 2 described timings from frame memory 23, and converting thereof into analog signal by D/A conversion portion 25-2.
Scan control part 41-1 and scan control part 41-2 be by dot sequency or row sequential scanning method, and separately the analog video signal that provides is presented on the display part 43.At this moment, scan control part 41-1 and scan control part 41-2 can be by alternately scanning successive frame, the scanning time started of the scanning time started that makes simultaneously each successive frame with respect to subsequent frame is offset 1/2 frame, thereby with the frame rate of the twice of the frame rate of the independent carries out image drawing of scan control part 41-1 or scan control part 41-2, carries out image shows on display part 43.
Below with reference to example shown in Figure 3, that use projecting apparatus 51-1, projecting apparatus 51-2 and screen 52, the concrete operations of Description Image display unit 12.Projecting apparatus 51-1 is corresponding to the scan control part 41-1 among Fig. 1, and projecting apparatus 51-2 is corresponding to the scan control part 41-2 among Fig. 1, and screen 52 is corresponding to the display part 43 among Fig. 1.
For example, projecting apparatus 51-1 is provided the analog video signal corresponding with outputting video signal S2, wherein, is as above reading this vision signal with reference to figure 2 described timings from frame memory 23, and is converting thereof into analog signal by D/A conversion portion 25-1.Similarly, projecting apparatus 51-2 is provided the analog video signal corresponding with outputting video signal S3, wherein, is as above reading this vision signal with reference to figure 2 described timings from frame memory 23, and is converting thereof into analog signal by D/A conversion portion 25-2.
In the timing based on the control of display control section 27, among projecting apparatus 51-1 and the projecting apparatus 51-2 each is by arriving pixel (X from pixel (X, Y)=(0,0), Y)=(p, q) scan in the horizontal direction screen 52, show the two field picture corresponding with the vision signal that provides, wherein from pixel (X, Y)=(0,0) scope to pixel (X, Y)=(p, q) forms the image that will be shown.Frame rate by the two field picture of each demonstration among projecting apparatus 51-1 and the projecting apparatus 51-2 is m/2.As top the same with the situation of outputting video signal S3 with reference to figure 2 described outputting video signal S2, by scanning time started of each frame of a demonstration among projecting apparatus 51-1 and the 51-2 with respect to a display frame skew 1/2 that is provided by another, and the phase difference between its scanning is 1/m.
For example, when row corresponding with the α+1 frame on the row that is represented by scanning B on the projecting apparatus 51-2 scanning screen 52, projecting apparatus 51-1 scans on the screen 52 row corresponding with the α+2 frames on the row that is represented by scan A.1/2 row with respect to the line number of a frame of line displacement that is represented by scan A by the row that represents of scanning B.More particularly, with the time interval of 1/m, alternately rewrite the moving image that is presented on the screen 52 by scan A and scanning B.
For example, if the frame rate of the demonstration image of each output from projecting apparatus 51-1 and projecting apparatus 51-2 is 150Hz, the frame rate that then is presented at the moving image on the screen becomes in fact 300Hz.
In addition, for prevent by scan A and scanning among the B corresponding one deviation occurs between the scan line that same position forms, might be by using and becoming the image optical position of dual-stack (twin stack) technology to proofread and correct similar technology, the scanning position of correction pixels for traditional what is called.Become the dual-stack technology be a kind of can by with two projecting apparatus at same time and show the technology of bright image in same position demonstration identical image.When by when becoming the dual-stack technology to show image, the brightness of shown image becomes the twice height, thereby even in the situation of bright light environments or long projector distance, also can realize clearly projection.
Become the use of dual-stack technology to cause such problem, namely owing to the deviation between the location of pixels of two projected images occur image blurring, but the so-called picture offset functions of location of pixels that can finely tune the optical projection image is widely with solving such problem.According to the picture offset functions, can make from the picture position of two projecting apparatus projections accurately consistent with each other.
The technology of the deviation between the location of pixels of two projected images of a kind of correction for example, is disclosed in the flat 10-058291 of Japanese patent application No..
By adjusting image display device 12, be not more than a pixel (point or a pixel) in order to become by the deviation between scan A and the scan line that forms of scanning B, image display device 12 becomes and can show moving image, and can be owing to the image of mutual skew one frame overlapping causes image blurring.
As mentioned above, at projecting apparatus 51-1 and the projecting apparatus 51-2 two field picture of on basis frame by frame, alternately painting, make simultaneously in the situation of each two field picture with respect to subsequent frame image shift 1/2 frame, by one in the projecting apparatus begin for the drawing frame image scanning early than finished by another projecting apparatus scanning and the drawing at previous frame.At this moment, when the object C on the screen 52 that is presented at Fig. 3 was shown as for example from left to right moving on display screen, the user of the level and smooth observed moving image of the motion of marginal portion β was felt as the level and smooth of shown image.
The demonstration of the marginal portion β of object C on the screen 52 is described below with reference to Fig. 4.
Show the object C of α frame by projecting apparatus 51-1, and after the cycle of second, shown the object C of α+1 frame at 1/m by projecting apparatus 51-2.After cycle, rewrite the position of the marginal portion β of object C at this moment at the 1/m that shows from the α frame.Then, after the cycle, shown the object C of α+2 frames at 1/m by projecting apparatus 51-1.After cycle, rewrite the marginal portion β of object C at the 1/m that shows from α+1 frame.
For example, when the frame rate of the demonstration image of each output from projecting apparatus 51-1 and projecting apparatus 51-2 is 150Hz, with the interval of 1/150 (second), rewrite the frame of the moving image that is shown by each the independent projecting apparatus among projecting apparatus 51-1 and the projecting apparatus 51-2.Yet, refreshing the marginal portion β of object C with the interval of 1/300 (second), it is by by means of projecting apparatus 51-1 and projecting apparatus 51-2 display frame image alternately on basis frame by frame, and is displayed on the screen 52.Therefore, the motion of the marginal portion β of the object C that is observed by the user becomes very level and smooth.
The above with reference to the projection display system that is made of projecting apparatus 51-1, projecting apparatus 51-2 and screen 52, has narrated the operation of image display device 12 illustratively.Yet, image display device 12 can come by dot sequency or line sequential method the display system of pictorial image with any other, as long as this display system can make two display unit alternately scan successive frame with the skew of 1/2 frame, and carry out the demonstration of moving image with the high frame rate of twice of the frame rate of each the independent display unit in two display unit, get final product.
For example, GLV is the image display technology that uses micro stripline array (micro ribbon array), and wherein the micro stripline array is for the projection arrangement that is used for controlling direction of light, color etc. by the use optical diffraction.The micro stripline array comprises Miniature optical diffraction instrument by rows, and GLV is by coming Ear Mucosa Treated by He Ne Laser Irradiation to the micro stripline array the projection of carries out image.Can drive independently band (ribbon) by the signal of telecommunication, and can regulate the driving amount of each band, in order to change the optical diffraction amount, and produce bright and dark in the image by means of the difference between each band.Therefore, GLV can realize that level and smooth gray scale represents and high-contrast.
LED is the device that is formed by two kinds of semi-conductive joints, and can be luminous when applying electric current.
FED is the device that can obtain by the emission principle that is similar to CRT image, and it comes luminous by the fluorescent material that takes out electronics from negative electrode and electron collision is covered on the anode.Yet the negative electrode of CRT has the structure of using the point-like electron source, and the negative electrode of FED has the structure of using the plane electronics source.
To process 1 by the demonstration control that image display system shown in Figure 11 is carried out below with reference to flow chart description shown in Figure 5.
At step S1, synchronization signal detection part 22 detects synchronizing signal and Dot Clock from the analog video signal that provides, and vertical synchronizing signal and Dot Clock signal are offered controller 24.
At step S2, A/D conversion portion 21 is provided by the A/D conversion of the analog video signal that provides, and digital video signal is offered frame memory 23.
At step S3, frame memory 23 sequentially is provided by the digital video signal that provides.
At step S4, as above described with reference to figure 2, control according to controller 24, frame memory 23 is being the corresponding frame rate of half the output point clock of speed of incoming video signal S1 with its speed, on basis frame by frame, alternately vision signal is outputed to two D/A conversion portion 25-1 and 25-2, simultaneously each frame is offset half of required scan period of frame of demonstration with respect to subsequent frame.The vision signal that outputs to D/A conversion portion 25-1 is outputting video signal S2, and the vision signal that outputs to D/A conversion portion 25-2 is outputting video signal S3.
In other words, controller 24 control frame memories 23, so that the frame that will be stored in the frame memory 23 is separated into odd-numbered frame and even frame, and make in the odd and even number frame each show half cycle of scan period that frame is required with respect to subsequent frame skew, in order to alternately these frames are outputed to D/A conversion portion 25-1 and D/A conversion portion 25-2.
At step S5, the D/A conversion of the vision signal that provides is provided for D/A conversion portion 25-1 and D/A conversion portion 25-2, and analog video signal is offered image display device 12.
At step S6, display control section 27 with top situation with reference to figure 2 described outputting video signal S2 and outputting video signal S3 under the similar timing of the timing used, the scan control part 41-1 of control image display device 12 and scan control part 41-2 are (in Fig. 3, projecting apparatus 51-1 and projecting apparatus 51-2), and the cycle of half of the scan period that the scanning time started that makes each frame is required with respect to frame of scanning time started skew demonstration of subsequent frame, thereby on basis frame by frame, each frame of scan video signal alternately, so that with each the high frame rate of display of basically twice of frame rate among scan control part 41-1 and the scan control part 41-2, video image is presented on the display part 43 (in Fig. 3, screen 52).Display control section 27 is controlled image display device 12 by this way, and finishes processing.
By above-mentioned processing, the moving image that will be shown is separated into the odd and even number frame, and the odd and even number frame is offered respectively two display unit.Then, each display unit with the frame rate of the moving image that will be shown half frame rate, with the shifted scanning odd and even number frame of 1/2 frame, in order to can high frame rate show moving image with the twice of display unit ability.
In addition, by adjusting the position accuracy that scans of two scan lines, so that position deviation is not more than a point (pixel), might clearly illustrate moving image, and not have owing to overlapping cause image blurring that mutually is offset the image of a frame.
In addition, if each among projecting apparatus 51-1 and the projecting apparatus 51-2 is so-called liquid crystal projection apparatus, then can provide shutter (shutter) in the front of the projecting lens of projecting apparatus 51-1, for example, in Fig. 2, providing the time started that time started a is provided and providing between the time started b, time started c is being provided and is providing between the time started d, and time started e is being provided and is providing between the time started f, this shutter is by being used for showing the light by the image of projecting apparatus 51-1 projection, and in Fig. 2, time started b is being provided and is providing between the time started c, and time started d is provided and provides between the time started e, this shutter stops for the light that shows by the image of projecting apparatus 51-1 projection.In addition, can provide shutter in the front of the projecting lens of projecting apparatus 51-2, for example, in Fig. 2, time started b is being provided and is providing between the time started c and time started d is being provided and provides between the time started e, this shutter is by being used for showing the light by the image of projecting apparatus 51-2 projection, and in Fig. 2, time started a being provided and providing between the time started b, time started c is being provided and provides between the time started d and time started e is being provided and provides between the time started f, stop for the light that shows by the image of projecting apparatus 51-2 projection.
More particularly, in the shutter transmission that provides previously of the projecting lens of projecting apparatus 51-1 or stop for the light that shows by the image of projecting apparatus 51-1 projection, so that show all the α frame synchronous with incoming video signal S1 shown in Figure 2, α+2 frames, α+4 frames ..., that is the, (α+2 * n) frames (n be integer) synchronous with incoming video signal S1 only.In the shutter transmission that provides previously of the projecting lens of projecting apparatus 51-2 or stop for the light that shows by the image of projecting apparatus 51-2 projection, so that all the demonstration α synchronous with incoming video signal S1 shown in Figure 2+1 frame, α+3 frames ..., that is the, (α+2 * n+1) frames (n be integer) synchronous with incoming video signal S1 only.
In addition, each in the shutter can be liquid crystal shutter or mechanical shutter, and only needs and can transmit or stop light with time interval of predetermined period.
In addition, can in projecting apparatus 51-1 or projecting apparatus 51-2, for example, between light source and liquid-crystal apparatus or in the back of liquid-crystal apparatus, provide each in the shutter.
Fig. 6 illustrates the block diagram of structure of having used the present invention and having had the image display system 71 of the structure different from image display system shown in Figure 11.
Same numeral is used for representing and corresponding part shown in Figure 1, and omits the description of same section.
The analog picture signal that offers image signal conversion device 81 is offered A/D conversion portion 21 and synchronization signal detection part 22.
The analog picture signal that A/D conversion portion 21 will have frame rate m converts data image signal to, and data image signal is offered data separating part 91.Synchronization signal detection part 22 is from frame rate and the Dot Clock of picture signal detected image signal, and generate vertical synchronizing signal and Dot Clock signal, and vertical synchronizing signal and Dot Clock signal are offered data separating part 91, data preservation part 92-1, data preservation part 92-2 and controller 94.
Based on the vertical synchronizing signal that provides from synchronization signal detection part 22, data separating part 91 is separated into individual frames with the data image signal that provides, and on basis frame by frame, frame is alternately offered data preserve part 92-1 or data preservation part 92-2.For example, data separating part 91 offers data with odd-numbered frame and preserves part 92-1, and even frame is offered data preservation part 92-2.
Data are preserved part 92-1 as the interface between data separating part 91 and the frame memory 93-1, and data are preserved part 92-2 as the interface between data separating part 91 and the frame memory 93-2.Data are preserved among part 92-1 and the 92-1 each based on the vertical synchronizing signal that provides from synchronization signal detection part 22, and frame memory 93-1 or frame memory 93-2 on basis frame by frame the picture signal that provides are provided.
Frame memory 93-1 offers D/A conversion portion 25-1 based on the control of controller 94 with vision signal.Frame memory 93-2 offers D/A conversion portion 25-2 based on the control of controller 94 with vision signal.
If in this supposition, the signal that offers data separating part 91 is incoming video signal S1, the signal of exporting from frame memory 93-1 is outputting video signal S2, and the signal of exporting from frame memory 93-2 is outputting video signal S3, and then the Input output Relationship between these signals is described with reference to figure 2 above being similar to.
Fig. 2 does not have to consider the signal delay that caused by the data separating processing in the data separating part 91 etc., but controller 94 can be adapted to the signal output timing of for example preserving part 92-1 and data preservation part 92-2 by means of data, adjusts the delay of signal and the timing offset between the two row vision signals.
D/A conversion portion 25-1 converts the data image signal that provides to analog picture signal, and analog picture signal is offered image display device 12.D/A conversion portion 25-2 converts the data image signal that provides to analog picture signal, and analog picture signal is offered image display device 12.
When needing, driver 28 can be connected to controller 24.Disk 31, CD 32, magneto optical disk 33 or semiconductor memory 34 are installed on the driver 28, in order to transmit and reception information.
Below with reference to flow chart shown in Figure 7, description will process 1 by the demonstration control that image display system shown in Figure 6 66 is carried out.
At step S21, synchronization signal detection part 22 detects synchronizing signal and Dot Clock from the analog picture signal that provides, and vertical synchronizing signal and Dot Clock signal are offered data separating part 91, data preservation part 92-1, data preservation part 92-2 and controller 94.
At step S22, A/D conversion portion 21 is provided by the A/D conversion of the analog video signal that provides, and digital video signal is offered data separating part 91.
At step S23, based on the vertical synchronizing signal that provides from synchronization signal detection part 22, data separating part 91 is separated into individual frames with the analog video signal that provides, and on basis frame by frame, frame is alternately offered data preserve part 92-1 or data preservation part 92-2.For example, data separating part 91 offers data with odd-numbered frame and preserves part 92-1, and even frame is offered data preservation part 92-2.
At step S24, each among data preservation part 92-1 and the data preservation part 92-2 offers frame memory 93-1 or frame memory 93-2 with the vision signal that provides, and the vision signal that frame memory 93-1 or frame memory 93-2 storage are provided.
At step S25, controller 94 control frame memory 93-1 and frame memory 93-2, so that with the frame rate corresponding with half output point clock of the Dot Clock that equals incoming video signal S1, on basis frame by frame, alternately a frame with vision signal outputs to D/A conversion portion 25-1 and outputs to D/A conversion portion 25-2 from frame memory 93-2 from frame memory 93-1, makes simultaneously each frame show half cycle of scan period that frame is required with respect to subsequent frame skew.More particularly, if in this supposition, the signal that offers data separating part 91 is incoming video signal S1, the signal of exporting from frame memory 93-1 is outputting video signal S2, and the signal of exporting from frame memory 93-2 is outputting video signal S3, and then the Input output Relationship between these signals is described with reference to figure 2 above being similar to.
At step S26, each among D/A conversion portion 25-1 and the D/A conversion portion 25-2 is provided by the D/A conversion of the vision signal that provides, and analog video signal is offered image display device 12.
At step S27, display control section 27 with top situation with reference to figure 2 described outputting video signal S2 and outputting video signal S3 under the similar timing of the timing used, the scan control part 41-1 of control image display device 12 and scan control part 41-2 are (in Fig. 3, projecting apparatus 51-1 and projecting apparatus 51-2), and the cycle of half of the scan period that the scanning time started that makes each frame is required with respect to frame of scanning time started skew demonstration of subsequent frame, thereby each frame of scan video signal alternately on basis frame by frame, so that with each the high frame rate of display of basically twice of frame rate among scan control part 41-1 and the scan control part 41-2, video image is presented on the display part 43 (in Fig. 3, screen 52).Display control section 27 is controlled image display device 12 by this way, and finishes processing.
Even in image display system shown in Figure 6 71, the situation of image display system as shown in Figure 1 is the same, by above-mentioned processing, the moving image that will be shown is separated into the odd and even number frame, and the odd and even number frame is offered respectively two display unit, that is, scan control part 41-1 and scan control part 41-2.Then, each display unit with the frame rate of the moving image that will be shown half frame rate, with the shifted scanning two field picture of 1/2 frame, in order to can high frame rate show moving image with the basically twice of display unit ability.
In the above in the description to the embodiment of the invention, with reference to such situation, two row picture signals wherein the picture signal that provides are provided into, and by two scan control part pictorial image, but the separation number of picture signal can be any number of two that is not less than.
If the separation number of picture signal for example is three, then will sequentially offer three D/A conversion portions from the picture signal of frame memory output, perhaps will partly be separated into three frame by data separating and sequentially offer respectively three frame memories and be stored in wherein.Like this, as shown in Figure 8, incoming video signal S1 is separated into three outputting video signal S2, S3 and S4, and these three outputting video signal S2, S3 and S4 are offered respectively three scan control parts.
The first scan control partly control α frame, α+3 frames, α+6 frames ... demonstration, all these frames are corresponding to outputting video signal S2.The second scan control partly control α+1 frame, α+4 frames, α+7 frames ... demonstration, all these frames are corresponding to outputting video signal S3.The 3rd scan control partly control α+2 frames, α+5 frames, α+8 frames ... demonstration, all these frames are corresponding to outputting video signal S4.The frame rate of the frame of the outputting video signal that is partly shown by the first scan control part, the second scan control part and the 3rd scan control respectively be incoming video signal frame rate 1/3, and the scanning time started of the frame that is partly scanned by the first scan control part, the second scan control part and the 3rd scan control respectively mutually skew show 1/3 of scan period that a frame of each in the S4 of outputting video signal S2 is required.
If incoming video signal S1 for example is 180Hz, then incoming video signal S1 is separated into three outputting video signal S2, S3 and S4, and these three outputting video signal S2, S3 and S4 are offered respectively three scan control parts, and by each scan control part with the frame rate of 60Hz as outputting video signal scanning and show it.If incoming video signal S1 for example is 150Hz, then incoming video signal S1 is separated into three outputting video signal S2, S3 and S4, and these three outputting video signal S2, S3 and S4 are offered respectively three scan control parts, and by each scan control part with the frame rate of 50Hz as outputting video signal scanning and show it.By this way, can adopt the scan control part that is widely used type at present most, its can with 50Hz (PAL: phase-aoternation line system) or 60Hz (NTSC: national television system committee or HD (high definition) vision signal), in order to show moving image with much higher frame rate.
Although the NTSC frame rate more correctly was 59.94 frame/seconds, according to those skilled in the art's convention, NTSC frame rate mentioned herein was defined as for 60 frame/seconds.Similarly, 59.94 multiple is called 60 multiple.More particularly, be called respectively 60,120,180,240,300,360,420 and 480 at this with 59.94,119.88,179.82,239.76,299.70,359.64,418.58 and 479.52.
Therefore, if the separation number of incoming video signal for example is n, then provide n scan control part, and be the 1/n of the frame rate of incoming video signal by the frame rate of the frame of first outputting video signal that partly shows to n scan control respectively.Mutually be offset respectively the 1/n of display cycle of a frame of outputting video signal separately by drawing time started of first frame that partly scans to n scan control, thereby show individually that with in the scan control part each situation of moving image compares, can with n basically doubly high frame rate show moving image.
In addition, the number of scan control part can be arranged to s, and the separation number of vision signal can be arranged to the n less than s, so that by using s n scan control section in the middle of the scan control part to assign to show moving image.
In the description of carrying out in conjunction with Fig. 1 and Fig. 6 in the above, with reference to image display system, wherein each is made of image signal conversion device and image display device, still, certainly, in the element each can be embodied as single assembly.
Supposition based on controller 24 control frame memories 23 and display control section 27 control image display devices 12, image signal conversion device shown in Figure 1 11 has been described, based on the supposition of controller 94 control frame memory 93-1 and frame memory 93-2 and display control section 27 control image display devices 12, image signal conversion device shown in Figure 6 81 has been described simultaneously.Yet, can be used for by identical controller control the frame memory of stored video signal and the image display device that is used for showing image.Display control section 27 can be provided in image display device 12 not in image signal conversion device 11 or 81.
Moving image is with the peculiar deterioration in image quality that does not appear in the rest image.In being widely used most at present display type, 50Hz (PAL) and 60Hz (NTSC and HD vision signal), reproduction on time orientation is defective, and under given conditions, this defective on the time orientation is converted into the defective on the direction in space.Therefore, for example owing to be used for obtaining the shutter cycle of motion image data, the emission cycle of the display unit during showing moving image and individual's sighting condition, move the deterioration in image quality of image.
Fig. 9 shows the example of the actual scene that stationary objects and Moving Objects coexist together.This scene assumed vehicle moves right, and tree fixes on the ground.Figure 10 and 11 shows the observer's who observes scene shown in Figure 9 identification.
Figure 10 is the view that the observer's who watches (gaze) tree attentively video image identification is shown.In this case, the automobile that moves right is dim visible for the observer.Figure 11 is the view that the observer's who watches automobile attentively video image identification is shown.In this case, static tree is dim visible for the observer.
In the following description, the situation that the observer is fixed on his/her sight line on the fixed object of viewing plane coordinate is known as the condition of staring, and the observer makes the situation of the Moving Objects of eye tracking viewing plane coordinate be known as tracking condition.More particularly, in conjunction with the described situation of Figure 10 corresponding to the condition of staring, and in conjunction with the described situation of Figure 11 corresponding to tracking condition.Under the condition of staring and tracking condition, by the observer watch attentively to as if clearly visible, and about the relative position of being watched attentively object change dim visible to liking.
Such reason is that human vision property has comprehensively (integrate) incides the light on the retina in specific period function.The object that moves at the retina coordinate of eyes has shown that position comprehensive on time orientation changes, and is the image that blurs thereby feel Moving Objects.The movement velocity of being somebody's turn to do on fuzzy and the retina coordinate is proportional.Movement velocity on the retina coordinate do not correspond to object actual speed and corresponding to its angular speed (degree/second).
As mentioned above, on the retina coordinate static to as if clearly visible, and the retina coordinate move to as if dim visible.In order to show the moving image with verisimilitude, that is, look like the high quality motion picture of smooth motion, the video image consistent with so actual identification is important.
Describe top with reference to the described observer's identification of Figure 10 and top with reference to the difference between the described observation identification of Figure 11 below with reference to Figure 12.The top of Figure 12 shows the actual motion in the external world.The longitudinal axis represents time shaft, and transverse axis represents horizontal direction, and the top of Figure 12 shows at fixing point (corresponding to the tree among Fig. 9 to 11, and in Figure 12, represent with x) and the point of uniform motion (corresponding to the automobile among Fig. 9 to 11, and in Figure 12, represent with y) be present in the scene in the external world, point is in the position of each time.The bottom of Figure 12 shows the identification of the motion in observer's external world during staring and following the tracks of.Arrow shown in broken lines represents the motion of observer's viewpoint, that is, and and the direction of comprehensive video image on retina.Comprehensive direction during the arrow that extends in vertical direction is illustrated in and stares, and the arrow that in an inclined direction extends is illustrated in comprehensive direction during the tracking.More particularly, when the observer followed the tracks of, fixing point (tree) was dim visible, but motor point (automobile) is clearly visible.On the other hand, when the observer stared, fixing point (tree) was clearly visible, but motor point (automobile) is dim visible.
The below will be according to image capture conditions, display condition and observation condition, is described with reference to Figure 13 when the motion of catching by the still image catching method as moving-image reproducing, and the observer is to the identification of the motion in the external world shown in Figure 9.The top of Figure 13 shows the time variation that moving image shows.The bottom of Figure 13 as observer's identification show stare and follow the tracks of during the sight line direction of motion be the result who obtains by the light that comprehensively shows as moving image on the direction of comprehensive axle.
Figure 13 A shows the identification of observer in by the situation of the image opening that shutter (open shutter) technology is caught and shown by the impulse type display.Figure 13 B shows the identification of observer in by the situation of the image opening that fast gate technique is caught and shown by maintenance (hold-type) display.Figure 13 C shows the identification of observer in the situation of the image of catching by the high-speed shutter technology and being shown by the impulse type display.Figure 13 D shows the identification of observer in the situation of the image of catching by the high-speed shutter technology and being shown by the maintenance display.
Maintenance refers at the display type that keeps the demonstration of each pixel on the screen during each frame period as used herein, and the maintenance display for example is LCD.Use the display unit of LED or use the display unit of EL (electroluminescence) can be used as the maintenance display.
The impulse type display for example is CRT or FED.
In addition, display not only is classified into maintenance (maintenance) and impulse type, but also (for example be classified into the pixel type display, use the display of LCD or LED and the display of use EL) and so-called matrix driving display, wherein in the pixel type display, element is arranged in respectively in each pixel, and so-called matrix driving display is by being applied to separately the drivings such as the voltage that is arranged in the upright position on the screen take predetermined length as unit and is arranged in the horizontal level on the screen take predetermined length as unit, electric current.
Can find out that from Figure 13 A to 13D moving image quality is deteriorated different under different conditions.For example, compare with the Moving Objects identification of observing by tracking in Figure 13 or 13C, the Moving Objects of observing by tracking in Figure 13 B and 13D is dim visible.This phenomenon is known as " motion blur ", and it is that the display that operates under the maintenance launching condition is peculiar." motion blur " is occur in the object that the observer is watching attentively fuzzy, and be the observer feel easily deteriorated.
In addition, occur such as so deteriorated, namely in Fig. 3 D owing to stare the stroboscopic artifact (shake) that causes and the stroboscopic artifact that in Figure 13 A and 13C, causes owing to tracking.The stroboscopic artifact refers to that such moving image is deteriorated, it makes the observer see simultaneously a plurality of copies of Moving Objects (such as automobile), perhaps as shown in figure 14, when the observer stare on the display fixed object (for example, tree) time, as if it is the same to see that Moving Objects is carrying out rough discrete motion.Therefore, under many circumstances, the stroboscopic artifact that occurs in by the Moving Objects stared and tracked fixed object is occur in the part different from the object of just being watched attentively deteriorated, and compares with " motion blur " and not to be very remarkable.Yet, when sight line is not when following the tracks of fully, is watched attentively relation between object and the sight line and become and be same as Moving Objects during staring and the relation between the sight line, the fixed object during perhaps following the tracks of and the relation between the sight line.In this case, the stroboscopic artifact appears in the object of just being watched attentively, thereby the deteriorated of highly significant occurs.For example in sports relay and the action movie, this phenomenon is significant in fast the video source that can not easily predict next motion of motion.During the moving image of catching film etc., adopt various technology, in order to prevent that such moving image quality is deteriorated: for example Moving Objects is when being followed the tracks of by video camera, caught by video camera, and on display screen, show the Moving Objects of being caught with the state of fixed object, perhaps introduce be known as motion blur blur to suppress the stroboscopic artifact.Yet the restriction that applies by these technology has caused representing the restriction of mode.In addition, these modes can not be used for sports etc., because the motion of interested object is uncertain.
According to the angular speed of Moving Objects, the deteriorated increase of above-mentioned moving image quality.Therefore, if the moving image of same video scene is presented on the display that has with great visual angle, then the quality of moving image is deteriorated more significantly.In addition, it is deteriorated that the attempt that increases resolution improves above-mentioned moving image quality hardly.On the contrary, resolution is higher to cause the improvement of rest image quality larger, becomes more remarkable thereby moving image quality is deteriorated.Along with developing more screen sizes and more high-resolution display, can expect above-mentioned moving image quality will become larger problem in the future.
The deteriorated reason of moving image quality is the shortage of time reproducibility.Therefore, basic solution is improvement time reproducibility.More particularly, useful solution is to improve the frame rate that is used for image capture and shows both.
With the relation between Describing Motion deterioration in image quality and the display type in more detail.
For example, from relatively can find out between Figure 13 A and the 13B, the length of the Moving Objects image of visually identifying by tracking in Figure 13 B is longer than the length of the Moving Objects image of visually identifying by following the tracks of in Figure 13 A, thereby with the situation of impulse type display relatively, be presented at the motion blur that the observer of the Moving Objects on the maintenance display feels by tracking and become large.On the other hand, from such fact, namely in Figure 13 A, visually fixed object is identified as the image of separation by tracking, and in Figure 13 B, visually fixed object is identified as image continuous on direction in space by tracking, can find out, compare with the situation of impulse type display, the fixed object that is presented on the maintenance display is that nature is visible during following the tracks of.
Similarly, from relatively can find out between Figure 13 C and the 13D, the length of the Moving Objects image of visually identifying by tracking in Figure 13 D is longer than the length of the Moving Objects image of visually identifying by following the tracks of in Figure 13 C, thereby with the situation of impulse type display relatively, be presented at the motion blur that the observer of the Moving Objects on the maintenance display feels by tracking and become large.On the other hand, from such fact, namely in Figure 13 C, visually fixed object is identified as the image of separation by tracking, and in Figure 13 D, visually fixed object is identified as image continuous on direction in space by tracking, can find out, compare with the situation of impulse type display, the fixed object that is presented on the maintenance display is that nature is visible during following the tracks of.
During following the tracks of, the identification of the Moving Objects shown in Figure 13 A and fixed object is same as the identification of the Moving Objects shown in Figure 13 B and fixed object, and the identification of the Moving Objects shown in Figure 13 C and fixed object is same as the identification of the Moving Objects shown in Figure 13 D and fixed object, but the identification of the Moving Objects shown in Figure 13 A and the 13B and fixed object is different from the identification of the Moving Objects shown in Figure 13 C and the 13D and fixed object.Can find out that from this fact the identification of Moving Objects and fixed object during staring (mode that motion blur and stroboscopic artifact (shake) occur) is identical, and with type of display be that impulse type or maintenance are irrelevant.In addition, can find out, even observe the Moving Objects of catching its image by opening fast gate technique by staring, also imperceptible stroboscopic artifact (shake), if but observe the Moving Objects of catching its image by the high-speed shutter technology by staring, then feel stroboscopic artifact (shake).
The deteriorated improvement degree of moving image that Figure 15 is realized when showing above the frame rate high with twice caught and to show it with reference to the described motion image data of Figure 13 and with the high frame rate of twice.
Figure 15 A shows the observer to the identification of moving image, its with above doubling with reference to the frame rate in the described situation of Figure 13, by opening that fast gate technique is caught and being shown by the impulse type display.Figure 15 B shows the observer to the identification of moving image, its with above doubling with reference to the frame rate in the described situation of Figure 13, by opening that fast gate technique is caught and being shown by the maintenance display.Figure 15 C shows the observer to the identification of moving image, its with above doubling with reference to the frame rate in the described situation of Figure 13, catch and shown by the impulse type display by the high-speed shutter technology.Figure 15 D shows the observer to the identification of moving image, its with above doubling with reference to the frame rate in the described situation of Figure 13, catch and shown by the maintenance display by the high-speed shutter technology.
Shown in each in the 15D of Figure 15 A, each catch with display packing in, will be in the identification that shows image reduce to half owing to blur the fuzzy quantity that artifact cause.In addition, improved the image deterioration that causes owing to the stroboscopic artifact, large because the dispersed number of stroboscopic becomes twice.More particularly, bluring artifact and stroboscopic artifact improves linearly with respect to the raising of frame rate.In addition, along with improving frame rate, the difference that depends between the deteriorated quality of the moving image quality in shutter cycle and emission cycle reduces.More particularly, can think that the frame rate of raising is for the very useful mode that improves moving image quality.
According to the comparison of Figure 13 A and 15A and the comparison of Figure 13 B and 15B, the ratio of the length of the Moving Objects of visually feeling by tracking in Figure 15 B apparently, and the length of the Moving Objects visually felt by tracking in Figure 13 B is less than the ratio of length with the length of the Moving Objects of visually feeling by tracking in Figure 13 A of the Moving Objects of visually feeling by tracking in Figure 15 A.Similarly, according to the comparison of Figure 13 C and 15C and the comparison of Figure 13 D and 15D, the ratio of the length of the Moving Objects of visually feeling by tracking in Figure 15 D apparently, and the length of the Moving Objects visually felt by tracking in Figure 13 D is less than the ratio of length with the length of the Moving Objects of visually feeling by tracking in Figure 13 C of the Moving Objects of visually feeling by tracking in Figure 15 C.
More particularly, can think that if improve similarly the frame rate of pulse and maintenance display, the effect that then reduces motion blur in the maintenance display is higher than the impulse type display.More particularly, in the maintenance display, the effect that frame rate improves reduce the motion blur that occurs during following the tracks of is significant.
On the other hand, for stroboscopic artifact (shake), because the interval between the fixed object image that separate to show generally becomes shorter, so stroboscopic artifact (shake) generally becomes and more can not feel.
For by opening the demonstration of the moving image that shutter catches, by the visual psychology Physical Experiment, according to shake and motion blur, under tracking condition, its moving image quality is carried out evaluation and test.
Figure 16 shows the result according to the shake evaluation and test, and Figure 17 shows the result according to the motion blur evaluation and test.For this evaluation and test, various moving images have been prepared, proper motion image, CG motion and the video image of for example catching by opening the shutter video.Providing evaluation and test according to following deteriorated yardstick divides: evaluation and test value 5=" deteriorated is imperceptible ", evaluation and test value 4=" but deteriorated be realizable disagreeable ", evaluation and test value 3=" but deteriorated be realizable be not obstruction ", evaluation and test value 2=" deteriorated is what to hinder ", and evaluation and test value 1=" deteriorated is to hinder very much ".In addition, providing evaluation and test according to following evaluation and test yardstick divides: evaluation and test value 5=" very good ", evaluation and test value 4=" good ", evaluation and test value 3=" medium ", evaluation and test value 2=" poor ", and evaluation and test value 1=" non-constant ".In this experiment, the tested object of enough numbers has been carried out evaluation and test, in order to realize the research about the evaluation and test of general motion picture quality.In Figure 16 and 17, mean value and standard deviation about evaluation and test value all scenes, that provided by all tested objects have been drawn.
Compare with shake shown in Figure 16, the evaluation and test value of motion blur shown in Figure 17 changes greatly, and for shake and motion blur, jointly observes such trend, that is, along with frame rate uprises, the evaluation and test value of moving image quality uprises.Especially, the evaluation and test value of motion blur shows such polyline shaped trend, namely near arriving as the evaluation and test value 4.5 of sensation limit value near the 250fps, and the smooth value that is not less than evaluation and test value 4.5 is shown in much higher frame rate.The evaluation and test value of shake also shows such polyline shaped trend, namely near arriving as the evaluation and test value 4.5 of sensation limit value near the 250fps, and the general planar value that is not less than evaluation and test value 4.5 is shown in much higher frame rate.
Therefore, can be by improving satisfactorily during following the tracks of near the frame rate of 250fps, causing the especially significant deteriorated motion blur of moving image quality.More particularly, this fact has hinted it is desirable frequency near the 250fps, and it considers the validity of now widely used video resource.Specifically, as previously mentioned, a large amount of now widely used video resources have the frame rate of 50Hz or 60Hz, and this fact has hinted that 240Hz or 250Hz as the integral multiple of this frequency are the ideal frequency of considering the validity of video resource.
The below will describe this evaluation and test in more detail.In EBU (European Broadcasting Union) method, evaluation and test value 4.5 is sensation limit values, thereon, in any zone corresponding with the evaluation and test value that is higher than 4.5, indifference is imperceptible basically, and evaluation and test value 3.5 is to allow limit value, and is lower at it, in any zone corresponding with the evaluation and test value that is lower than 3.5, improving is imperceptible basically.
In the result of the evaluation and test that concentrates on motion blur, with evaluation and test value 3.5 allow that the corresponding frame rate of limit value is 105.Frame rate 105, the general user begins to feel the improvement of motion blur.More particularly, 105 or higher frame rate, the general user can feel the improvement of motion blur.
In the result of the evaluation and test that concentrates on motion blur, the frame rate corresponding with the sensation limit value of evaluation and test value 4.5 is 230.230 or higher frame rate, the general user feels that gratifying motion blur improves.In other words, 230 or higher frame rate, the general user can feel that the motion blur that reaches the peak improves.More particularly, 230 or higher frame rate, the general user can feel the improvement of motion blur satisfactorily.
In the result who concentrates on the evaluation and test of shaking, the evaluation and test value of frame rate 480 is 5.0, and this value is the very little value of its standard deviation.Therefore, in frame rate 480, the general user can not identify shake.More particularly, in frame rate 480, the image deterioration that causes owing to shake can be suppressed to the degree that the user can not identify.
Therefore, in frame rate 150,200,250,300,350,400,450 or 500, it is to be not less than 105 and equal the frame rate of the integral multiple of the frame rate 50 among the PAL, and it is deteriorated to improve moving image quality.Be not less than 150 and equal the frame rate of the integral multiple of the frame rate 50 among the PAL, the general user can feel the improvement of motion blur.Be not less than 250 and equal the frame rate of the integral multiple of the frame rate 50 among the PAL, the general user can feel the improvement of motion blur satisfactorily.
Similarly, in frame rate 120,180,240,300,360,420 or 480, it is to be not less than 105 and equal the frame rate of the integral multiple of the frame rate 60 among the NTSC, and it is deteriorated to improve moving image quality.Be not less than 120 and equal the frame rate of the integral multiple of the frame rate 60 among the NTSC, the general user can feel the improvement of motion blur.Be not less than 240 and equal the frame rate of the integral multiple of the frame rate 60 among the NTSC, the general user can feel the improvement of motion blur satisfactorily.
In the frame rate of the integral multiple of the frequency of the general broadcast form that equals NTSC for example or PAL, easily carries out image processing.In addition, it has been general using three panel type prisms (three-panel type prism) during capture video images.Therefore, can be easily to having the vision signal carries out image processing of frame rate 180, wherein, frame rate 180 is the frame rate that are not less than evaluation and test value 3.5, in the EBU method, on evaluation and test value 3.5, the general user can feel the improvement of motion blur, and the video image that has 60 frame rate by catching each is offset 1/180 second by means of three panel type prisms with video image simultaneously mutually, can easily obtain such vision signal.
In addition, have been found that from series of experiments when wanting the Display control computer graph image, 360 or 350 frame rate is particularly preferred.This is because computer graphic image for example generally comprises high fdrequency component at its edge.Therefore, can easily feel owing to the deterioration in image quality that causes of shake, and when 250 or 240 frame rate is changed over 360 or 350 frame rate, even the general user also can feel the improvement of picture quality.
The above with reference to figure 1 or shown in Figure 6, can be used for showing moving image with 240Hz or 250Hz that wherein 240Hz or 250Hz are the frequencies that equals 50Hz or 60Hz integral multiple according to image display system of the present invention.For example, as shown in figure 18, can adopt two or more projecting apparatus 51-1 to realize showing that with the moving image of 240Hz or 250Hz wherein 240Hz or 250Hz are the frequencies that equals the integral multiple of 50Hz or 60Hz to 51-n and image display system according to the present invention.
Each in the 51-n of projecting apparatus 51-1 is in the timing based on the control of display control section 27, form the pixel (X of the demonstration image that will be shown by in the horizontal direction scanning, Y)=(0,0) to pixel (X, Y)=(p, q), show the two field picture corresponding with the vision signal that provides at screen 52.When the frame rate of the moving image that is provided for image display system is m Hz, the frame rate that is presented at the two field picture on the screen 52 by each in the 51-n of projecting apparatus 51-1 is m/n Hz, but is m Hz by projecting apparatus 51-1 to the frame rate of the moving image of 51-n demonstration.Begun regularly with respect to by projecting apparatus 51-1 each display frame skew 1/n phase place that provides in the 51-n by the scanning of each frame of each demonstration of projecting apparatus 51-1 in the 51-n, i.e. 1/m second.
For example, when projecting apparatus 51-2 scans on the screen 52 correspondingly with the α+1 frame on the row that represents with scanning B when capable, projecting apparatus 51-3 scans on the screen 52 row corresponding with the α+2 frames on the row that represents with scan A.1/n with respect to the line number of a frame of line displacement that represents with scan A with the row that represents of scanning B.More particularly, with the time interval of 1/m, alternately rewrite the moving image that is presented on the screen 52 by a plurality of scannings that comprise scan A and scanning B.
If the frame rate of received image signal is 240Hz, and the separation number of picture signal for example is four, then will sequentially offer four D/A conversion portions from the picture signal of frame memory output, perhaps will partly be separated into four frame by data separating and sequentially offer respectively four frame memories and be stored in wherein.Like this, as shown in figure 19, incoming video signal S1 is separated into four outputting video signal S2, S3, S4 and S5, and these four outputting video signal S2, S3, S4 and S5 are offered respectively four scan control parts.
The first scan control partly control α frame, α+4 frames ... demonstration, all these frames are corresponding to outputting video signal S2.The second scan control partly control α+1 frame, α+5 frames ... demonstration, all these frames are corresponding to outputting video signal S3.The 3rd scan control partly control α+2 frames, α+6 frames ... demonstration, all these frames are corresponding to outputting video signal S4.The 4th scan control partly control α+3 frames, α+7 frames ... demonstration, all these frames are corresponding to outputting video signal S5.The frame rate of the frame of the outputting video signal that is partly shown by the first to the 4th scan control respectively be incoming video signal frame rate 1/4, and the scanning time started of the frame that is partly scanned by the first to the 4th scan control respectively mutually be offset 1/4 of the required scan period of a frame showing each in the S5 of outputting video signal S2.
If the frame rate of received image signal is 240Hz, and the separation number of picture signal for example is five, then will sequentially offer five D/A conversion portions from the picture signal of frame memory output, perhaps will partly be separated into five frame by data separating and sequentially offer respectively five frame memories and be stored in wherein.Like this, as shown in figure 20, incoming video signal S1 is separated into five outputting video signal S2, S3, S4, S5 and S6, and these five outputting video signal S2, S3, S4, S5 and S6 are offered respectively five scan control parts.
The first scan control partly control α frame, α+5 frames ... demonstration, all these frames are corresponding to outputting video signal S2.The second scan control partly control α+1 frame, α+6 frames ... demonstration, all these frames are corresponding to outputting video signal S3.The 3rd scan control partly control α+2 frames, α+7 frames ... demonstration, all these frames are corresponding to outputting video signal S4.The 4th scan control partly control α+3 frames, α+8 frames ... demonstration, all these frames are corresponding to outputting video signal S5.The 5th scan control partly control α+4 frames, α+9 frames ... demonstration, all these frames are corresponding to outputting video signal S6.The frame rate of the frame of the outputting video signal that is partly shown by the first to the 5th scan control respectively be incoming video signal frame rate 1/5, and the scanning time started of the frame that is partly scanned by the first to the 5th scan control respectively mutually be offset 1/5 of the required scan period of a frame showing each in the S6 of outputting video signal S2.
In the moving image with the most widely used present 50Hz or 60Hz showed, deteriorated such as moving image quality fuzzy or shake was significant.On the other hand, for example, when 4 or 5 as according to the separation number n of vision signal of the present invention the time, can by use widely used traditional type, with the display unit of the frame rate operation of 50Hz or 60Hz (for example, projecting apparatus), show the moving image with high frame rate.For example, when the separation number of incoming video signal is n=4, and the frame rate of the demonstration image of each output from projecting apparatus 51-1 to 51-4 is when being 60Hz, and the frame rate that is presented at the moving image on the screen 52 becomes basically 240Hz.In addition, for example, when the separation number of incoming video signal is n=5, and the frame rate of the demonstration image of each output from projecting apparatus 51-1 to 51-4 is when being 50Hz, and the frame rate that is presented at the moving image on the screen 52 becomes basically 250Hz.
As previously mentioned, a large amount of now widely used video resources have the frame rate of 50Hz or 60Hz, thus the ideal frequency that becomes the validity of considering video resource as 240Hz or the 250Hz of the integral multiple of this frequency.
Equally in this case, certainly, the number of scan control part can be arranged to s, and the separation number of incoming video signal can be arranged to the n less than s, in order to can assign to show moving image by using s n scan control section in the middle of the scan control part.
The below will describe the image display system with another structure 101 according to the embodiment of the invention.Figure 21 is the block diagram that the structure of the image display system 101 that uses LCD is shown.
A/D conversion portion 122 is based on the control signal from clock/sampling pulse generating portion 112 provides, the analog rgb signal that provides from Y/C separation/chroma decoding part 121 is carried out analog/digital conversion, and the digital rgb signal that generates is offered frame memory 123.Frame memory 123 is provided by digital rgb signal provisionally that provide from A/D conversion portion 122 orders, and the digital rgb signal of storing is offered image display device 113.
Clock/sampling pulse generating portion 112 comprises synchronization signal detection part 124 and control signal generating portion 125.Picture signal detection level synchronizing signal and the vertical synchronizing signal of synchronization signal detection part 124 from obtaining, and the horizontal and vertical synchronizing signal that detects offered control signal generating portion 125.Control signal generating portion 125 is based on the horizontal and vertical synchronizing signal that provides from synchronization signal detection part 124, generate the control signal of the analog/digital conversion that is used for control A/D conversion portion 122, and the control signal that is used for the demonstration on the control image display device 113, and the control signal that generates offered A/D conversion portion 122 and image display device 113.
More particularly, in LCD 131, one group of liquid crystal cell 141-1-1, TFT (thin-film transistor) 142-1-1 and capacitor 143-1-1 are arranged in respectively the first row of the first row in the capable n row of n to one group of liquid crystal cell 141-n-m (not shown), TFT 142-n-m (not shown) and capacitor 143-n-m (not shown).
Unless need individually identification liquid crystal cell 141-1-1 to 141-n-m, otherwise following liquid crystal cell 141-1-1 made liquid crystal cell 141 to the 141-n-m abbreviation.Unless need to identify individually TFT 142-1-1 to TFT 142-n-m, otherwise following TFT 142-1-1 is called for short to TFT 142-n-m, made TFT142.Unless need to identify individually capacitor 143-1-1 to 143-n-m, otherwise following capacitor 143-1-1 is called for short to TFT 143-n-m, made capacitor 143.
A liquid crystal cell 141, a TFT 142 and a capacitor 143 are arranged to one group, thus the constructor pixel.Liquid crystal cell 141 comprises liquid crystal, and according to the voltage that is applied by TFT 142, changes from the optical transmission light quantity of 132 irradiations backlight.TFT 142 drives liquid crystal cell 141 by voltage being applied to liquid crystal cell 141.Provide in parallel capacitor 143 with liquid crystal cell 141, and during the cycle of each frame, it keeps being applied to the voltage of liquid crystal cell 141.
In LCD 131, will all consist of in liquid crystal cell 141-1-1, the TFT 142-1-1 of a sub-pixel and the first left column that capacitor 143-1-1 is arranged in the first top line.In LCD 131, liquid crystal cell 141-1-2, the TFT 142-1-2 of a sub-pixel and the right that capacitor 143-1-2 is arranged in liquid crystal cell 141-1-1, TFT 142-1-1 and capacitor 143-1-1 will be consisted of all.In addition, in LCD 131, will all consist of liquid crystal cell 141-1-3, TFT 142-1-3 and the capacitor 143-1-3 of a sub-pixel and all consist of liquid crystal cell 141-1-4, the TFT 142-1-4 of a sub-pixel and capacitor 143-1-4 is arranged in the right with designated order.
In LCD 131, four sub-pixels that are arranged side by side in the horizontal line consist of a pixel (pixel).More particularly, liquid crystal cell 141-1-1 consists of a pixel to capacitor 143-1-4.
Similarly, in LCD 131, will all consist of in liquid crystal cell 141-2-1, the TFT 142-2-1 of a sub-pixel and the first left column that capacitor 143-2-1 is arranged in the second top line.In LCD 131, liquid crystal cell 141-2-2, the TFT 142-2-2 of a sub-pixel and the right that capacitor 143-2-2 is arranged in liquid crystal cell 141-2-1, TFT 142-2-1 and capacitor 143-2-1 will be consisted of all.In addition, in LCD131, will all consist of liquid crystal cell 141-2-3, TFT 142-2-3 and the capacitor 143-2-3 of a sub-pixel and all consist of liquid crystal cell 141-2-4, the TFT 142-2-4 of a sub-pixel and capacitor 143-2-4 is arranged in the right with designated order.
Liquid crystal cell 141-2-1 consists of a pixel to capacitor 143-2-4.
For example, if the picture signal of 240 frame/seconds is provided, then control signal generating portion 125 offers data line drive circuit 133-1 with control signal, in order to will be presented on the leftmost sub-pixel that is positioned at a pixel as the frame 1 of the first frame.
Data line drive circuit 133-1 reads the digital rgb signal of frame 1 from frame memory 123, and based on the digital rgb signal of the frame 1 that reads and will drive signal and offer LCD 131, in order to be positioned on the leftmost sub-pixel in the middle of frame 1 being presented at four sub-pixels on the horizontal line that is arranged side by side at a pixel (pixel), the sub-pixel that is for example formed by liquid crystal cell 141-1-1, TFT 142-1-1 and capacitor 143-1-1, or the sub-pixel that is formed by liquid crystal cell 141-2-1, TFT 142-2-1 and capacitor 143-2-1.
Then, control signal generating portion 225 offers data line drive circuit 133-2 with control signal, in order to will be presented on the sub-pixel on second left side that is positioned at this pixel as the frame 2 of the second frame of the moving images of 240 frame/seconds.
Data line drive circuit 133-2 reads the digital rgb signal of frame 2 from frame memory 123, and based on the digital rgb signal of the frame 2 that reads and will drive signal and offer LCD 131, in order to be positioned on the sub-pixel on second left side in the middle of frame 2 being presented at four sub-pixels on the horizontal line that is arranged side by side at this pixel (pixel), the sub-pixel that is for example formed by liquid crystal cell 141-1-2, TFT 142-1-2 and capacitor 143-1-2, or the sub-pixel that is formed by liquid crystal cell 141-2-2, TFT 142-2-2 and capacitor 143-2-2.
In addition, control signal generating portion 125 offers data line drive circuit 133-3 with control signal, in order to will be presented on the sub-pixel on the 3rd left side that is positioned at this pixel as the frame 3 of the 3rd frame of the moving images of 240 frame/seconds.
Data line drive circuit 133-3 reads the digital rgb signal of frame 3 from frame memory 123, and based on the digital rgb signal of the frame 3 that reads and will drive signal and offer LCD 131, in order to be positioned on the sub-pixel on the 3rd left side in the middle of frame 3 being presented at four sub-pixels on the horizontal line that is arranged side by side at this pixel (pixel), the sub-pixel that is for example formed by liquid crystal cell 141-1-3, TFT 142-1-3 and capacitor 143-1-3, or the sub-pixel that is formed by liquid crystal cell 141-2-3, TFT 142-2-3 and capacitor 143-2-3.
In addition, control signal generating portion 125 offers data line drive circuit 133-4 with control signal, in order to will be presented on the rightmost sub-pixel that is positioned at this pixel as the frame 4 of the 4th frame of the moving images of 240 frame/seconds.
Data line drive circuit 133-4 reads the digital rgb signal of frame 4 from frame memory 123, and based on the digital rgb signal of the frame 4 that reads and will drive signal and offer LCD 131, in order to be positioned on the rightmost sub-pixel in the middle of frame 4 being presented at four sub-pixels on the horizontal line that is arranged side by side at this pixel (pixel), the sub-pixel that is for example formed by liquid crystal cell 141-1-4, TFT 142-1-4 and capacitor 143-1-4, or the sub-pixel that is formed by liquid crystal cell 141-2-4, TFT 142-2-4 and capacitor 143-2-4.
Then, control signal generating portion 125 offers data line drive circuit 133-1 with control signal, in order to will be presented on the leftmost sub-pixel that is positioned at a pixel as the frame 5 of the 5th frame of the moving images of 240 frame/seconds.
Data line drive circuit 133-1 reads the digital rgb signal of frame 5 from frame memory 123, and based on the digital rgb signal of the frame 5 that reads and will drive signal and offer LCD 131, in order to be positioned on the leftmost sub-pixel in the middle of frame 5 being presented at four sub-pixels on the horizontal line that is arranged side by side at this pixel (pixel), the sub-pixel that is for example formed by liquid crystal cell 141-1-1, TFT 142-1-1 and capacitor 143-1-1, or the sub-pixel that is formed by liquid crystal cell 141-2-1, TFT 142-2-1 and capacitor 143-2-1.
By this way, be arranged side by side at the image that four sub-pixel orders on the horizontal line of a pixel (pixel) show a frame.
In this case, preferably, during 1/240 second cycle, show each frame, but also be preferably, for example showing each frame during 1/60 second the more long period.
According to this structure, even the response time of liquid crystal is long, also might show the moving image that is consisted of by larger number of pictures per second.The moving image that for example, might show for 240 frame/seconds.
Although in above-mentioned structure, use LCD, can use the matrix driving display of any type but not LCD.For example, can use display or the OLED display that adopts LED.
As mentioned above, in the maintenance display of the demonstration of each pixel during each frame period on the maintenance screen, control display, in order to show by 105 or the moving image that more consists of multiframe/second, and when showing based on such control by 105 or during the moving image that more consists of multiframe/second, needn't improve frame rate based on human visual system, less deteriorated moving image can be presented to the observer, it is the people who watches shown moving image.
In addition, in the matrix driving escope, control display, in order to show by 105 or the moving image that more consists of multiframe/second, and when showing based on such control by 105 or during the moving image that more consists of multiframe/second, needn't improve frame rate based on human visual system, less deteriorated moving image can be presented to the observer, it is the people who watches shown moving image.
Can also carry out above-mentioned all processing by means of software.This software can be installed to the computer with specialized hardware of having incorporated the program that consists of this software into from recording medium, perhaps can carry out on the all-purpose computer of various functions by various programs mounted thereto.
The encapsulation medium etc. that recording medium is distributed to mutually the user dividually by having recorded program so that with computer forms, and shown in Fig. 1 or 6, (for example comprise disk 31, floppy disk), CD 32 (for example, CD-ROM (compact disk-read-only memory) and DVD (digital multi-purpose disk)), magneto optical disk 33 (for example, MD (mini disk (trade mark)), semiconductor memory 34 etc.
In this manual, certainly, the step of describing the program on the recording medium that is recorded in can not only comprise according to described order, with the processing that the seasonal effect in time series mode is carried out, and also comprises and not necessarily carrying out but processing parallel or that carry out separately.
In this manual, the whole equipment that consisted of by a plurality of devices of term " system " expression.
Claims (2)
1. image display system comprises:
Signal Processing Element is used for obtaining the picture signal as input signal, and the picture signal of obtaining is used signal process, with the generating digital rgb signal;
Control assembly is used for picture signal detection level synchronizing signal and vertical synchronizing signal from obtaining, and generates control signal based on the horizontal-drive signal that detects and vertical synchronizing signal;
Image display part is used for carrying out demonstration based on the digital rgb signal that provides from described Signal Processing Element with from the control signal that described control assembly provides;
Wherein,
Described image display part further comprises
A plurality of pixels, each pixel is by being arranged side by side at horizontal line and n sub-pixel of adjacent layout consists of;
N data line drive circuit, each of described n data line drive circuit drive respectively the sub-pixel in the same row in each pixel; Wherein the value of n is 4;
Wherein, this control assembly is supplied with described n data line drive circuit successively with control signal, is presented at successively on the described n sub-pixel so that have the digital rgb signal of frame of the moving image of the first frame rate, and wherein the first frame rate was 240 frame/seconds.
2. image processing method comprises:
Obtain the picture signal as input signal, and the picture signal of obtaining is used signal process, with the generating digital rgb signal;
From picture signal detection level synchronizing signal and the vertical synchronizing signal of obtaining, and based on the horizontal-drive signal that detects and vertical synchronizing signal generation control signal; And
Carry out demonstration based on described digital rgb signal and control signal,
Wherein, carrying out demonstration comprises
Be controlled at n data line drive circuit in the display unit, described display unit further comprises a plurality of pixels, and each pixel is by being arranged side by side at horizontal line and n sub-pixel of adjacent layout consists of; Each of described n data line drive circuit drives respectively the sub-pixel in the same row in each pixel; Wherein the value of n is 4; Control signal is supplied with described n data line drive circuit successively, be presented at successively on the described n sub-pixel so that have the digital rgb signal of frame of the moving image of the first frame rate, wherein the first frame rate was 240 frame/seconds.
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| CN 200810161983 Expired - Fee Related CN101415093B (en) | 2004-08-10 | 2005-06-09 | Image processing apparatus, image processing method and image display system |
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| JP5000728B2 (en) * | 2008-01-22 | 2012-08-15 | シャープ株式会社 | Display system, display control device, image display device |
| WO2010087263A1 (en) | 2009-01-28 | 2010-08-05 | 日本電気株式会社 | Image transmission system and image transmission method |
| JP5343714B2 (en) * | 2009-06-05 | 2013-11-13 | ソニー株式会社 | Video processing device, display device, and display system |
| CN101847393B (en) * | 2010-04-23 | 2014-08-20 | 中国电子科技集团公司第五十四研究所 | Method for processing remote sensing image |
| CN102262519A (en) * | 2010-05-26 | 2011-11-30 | 图诚科技股份有限公司 | Image processing device and image signal processing system |
| JP5317023B2 (en) * | 2010-09-16 | 2013-10-16 | カシオ計算機株式会社 | Camera shake correction apparatus, camera shake correction method, and program |
| CN103426386B (en) * | 2012-05-24 | 2017-02-15 | 群康科技(深圳)有限公司 | Display device and control method thereof |
| CN103426387B (en) * | 2012-05-25 | 2017-02-15 | 群康科技(深圳)有限公司 | Display device and control method thereof |
| JP6019332B2 (en) * | 2012-06-04 | 2016-11-02 | 株式会社Ｊｏｌｅｄ | Display device, image processing device, and display method |
| US8797340B2 (en) * | 2012-10-02 | 2014-08-05 | Nvidia Corporation | System, method, and computer program product for modifying a pixel value as a function of a display duration estimate |
| JP6743732B2 (en) * | 2017-03-14 | 2020-08-19 | トヨタ自動車株式会社 | Image recording system, image recording method, image recording program |
| CN107589618B (en) * | 2017-10-23 | 2020-08-25 | 杭州光粒科技有限公司 | Micro projection system with high refresh rate and method for improving micro display refresh rate |
| CN111199697B (en) * | 2018-11-16 | 2023-06-30 | 瑞昱半导体股份有限公司 | Display device and display method for reducing dynamic blurring |
| US20220223104A1 (en) * | 2021-01-13 | 2022-07-14 | Nvidia Corporation | Pixel degradation tracking and compensation for display technologies |
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| CN101415093A (en) | 2009-04-22 |
| CN101437128A (en) | 2009-05-20 |
| JP4826602B2 (en) | 2011-11-30 |
| CN1860521A (en) | 2006-11-08 |
| JP2008268968A (en) | 2008-11-06 |
| CN101415093B (en) | 2013-03-06 |
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