CN101625844A - System and method for preventing screen of image display device from vibrating - Google Patents
System and method for preventing screen of image display device from vibrating Download PDFInfo
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- CN101625844A CN101625844A CN200810127657A CN200810127657A CN101625844A CN 101625844 A CN101625844 A CN 101625844A CN 200810127657 A CN200810127657 A CN 200810127657A CN 200810127657 A CN200810127657 A CN 200810127657A CN 101625844 A CN101625844 A CN 101625844A
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Abstract
The invention relates to a system and a method for controlling an image display device not to influence image viewing comfort caused by shaking of the device when the device displays an image in a nonstatic state. The system detects a moving track of a display screen on the display device through a three-dimensional phase detector; an image control unit records the initial position of the image on the display screen; a digital signal processor converts three-dimensional displacement variation detected by the detector into a two-dimensional planar offset, receives the image initial position recorded by the image control unit, and calculates another image initial position output to the display screen by matching the converted two-dimensional offset; and an image phase adjustment unit adjusts an image output scope according to the new image initial position and makes pictures on the display screen kept on the same position after a new image is output onto the display screen. The image pictures on the display screen cannot shake because of the movement of the display device so as to reduce uncomfortableness during viewing the pictures.
Description
Technical field
The present invention relates to a kind of system that prevents that image frame from rocking with image display, especially a kind of detecting this device change in displacement, and calculate the position of image output according to this displacement variable, to keep the fixing anti-vibrating system of image display position.
Background technology
Digital device type capable of displaying image is various, the portable equipment of partial devices, be available for users to carry, the user is when walking about or take the vehicles etc. under the nonstatic state, when using the device of this class to watch video file, picture or reading file, image display promptly can run into the situation of rocking a little.
Yet, image frame on the display device is not adjusted its angles of display or position because of the angle of this device or shift in position thereupon, so in any case the user moves this display device, same image file on this display device, its display frame, indication range on screen is all the same; But under the situation that the scope that image frame shows does not adjust, seem,, produce image on the contrary along with device tilts (consulting Figure 1A), the result of displacement (Figure 1B) just because of the image indication range does not have any adjustment from user's angle.If be in the environment that continues to rock, watch literal or image on this type of device, image frame also can present the situation that continues to rock, user's eyes must constantly condense the focus of sight line again clearly to watch or to read, thus, be easy to cause situations such as the discomfort of eyes or dizziness because picture constantly rocks.
Though many technology of micro breadth oscillation when preventing to capture external image are arranged, the control of Oscillation Amplitude when being exclusively used in pick-up image, the rarely seen technological means that prevents picture weave when solving the image of in a period of time continuously, watching on the screen in the existing invention more.
Summary of the invention
For making the image that under astatic state, also can cosily watch or read on the image display, the invention provides a kind of system that prevents the image frame vibration.
Native system is applicable to various image displays, and it has a display screen for this display device output picture, file or image such as dynamically audio-visual; The three-D displacement of display screen under the nonstatic state that one three dimensional Phase detector continues the detecting image display device changes; One image control module dwindles first image of 1 on the display screen a little, and writes down the initial position of this first image; Receive the three-D displacement variable quantity that is detected by a digital signal processor again, and be converted to the side-play amount of a two dimension, to cooperate two-dimensional plane image frame on the display screen, and this first image initial position that is write down according to this two-dimensional migration amount and this image control module, after calculating display screen and moving, one second image should be presented on the position of the indication range on the display screen, compensating the blurring that this display screen produces when mobile, and export one second image initial position signal according to the result of computing; One image phasing unit receives this second image initial position signal, according to the image frame scope of this signal judgement in order to counteracting display screen displacement, and exports this display screen to.
In other words, the invention provides a kind of anti-vibrating system of screen of image display, comprising: a display screen, for this image display output static images or dynamic image such as audio-visual; One image control module is shown in one first image on this display screen in order to scaled down, writes down this first image simultaneously and is shown in one first image initial position on this display screen and is transmitted; One three dimensional Phase detector is in order to detect the three-D displacement variable quantity of this display screen position at any time; One digital signal processor, in order to receive this first image initial position and this three-D displacement variable quantity, after as calculated this three-D displacement variable quantity being converted to a two-dimensional migration amount, according to this first image initial position and this two-dimensional migration amount, calculate the one second image initial position of this image display after moving, this digital signal processor is also exported one second image initial position signal according to this second image initial position; And an image phasing unit, receive this second image initial position signal, should be shown in the position of the image indication range on this display screen according to this second image initial position signal adjustment, and export this display screen to.
With above-mentioned anti-vibrating system provided by the present invention, can reach the anti-effect of using image display under the nonstatic state and causing picture weave that terminates in, when image display constantly moves, this three dimensional Phase detector is promptly constantly detected its phase change, this digital signal processor also continues the receiving phase variable quantity and is converted to the side-play amount of two dimension, and, make this image frame remain on same position on the sight line according to the position that its side-play amount adjustment image is exported.
For reaching the purpose that prevents that the image display screen-picture from rocking, the present invention provides one to prevent the method that screen-picture vibrates again.This method is shown in the initial position of first image of 1 on the display screen earlier by an image control unit records, when display screen is moved, continue its three-D displacement variable quantity of detecting by a three-dimensional detector; This three-D displacement variable quantity is sent to a digital signal processor again and receives, changing this three-D displacement variable quantity through computing is a two-dimensional migration amount, and this digital signal processor also receives aforementioned this first image initial position simultaneously.
According to this two-dimensional migration amount and this first image initial position, this digital signal processor then calculates one second image initial position on this display screen that should be shown in after moving, utilize the direction relative to pass the position that this answers show image, offset this display screen because of moving the skew that is produced with this two-dimensional migration amount; Then export one second image initial position signal, and the picture of the image that should be exported according to this signal adjustment by an image phasing unit is to this display screen.
Via said method and step thereof, can be in real time according to the outgoing position of mobile its image frame of adjustment of this display screen, keep image frame to be fixed in same position to reach, do not produce the effect of rocking because of this image display moves.
In other words, the invention provides a kind of screen vibration isolation method of image display, comprise the following steps: to accept to start the order of image anti-vibration functions; Locate a display screen position; Detect the three-D displacement variable quantity of this display screen position; Changing this three-D displacement variable quantity is a two-dimensional migration amount and calculating frame compensation amount; And comply with this compensation rate output picture in this display screen.
Therefore, the image frame on the display screen of the present invention can also and then rock its picture because of this display device moves, and reduces the sense of discomfort of watching picture.
Description of drawings
Figure 1A is existing display screen inclination synoptic diagram;
Figure 1B is existing display screen translation synoptic diagram;
Fig. 2 is the image display screen vibrationproof system element figure of the embodiment of the invention;
Fig. 3 A is the display screen and the image position scope synoptic diagram of the embodiment of the invention;
Fig. 3 B is the blurring compensation synoptic diagram of the embodiment of the invention;
Fig. 3 C is the blurring uncompensation synoptic diagram of the embodiment of the invention;
Fig. 4 is the sense of displacement synoptic diagram of the embodiment of the invention;
Fig. 5 A is the no screen vibration-isolating effect synoptic diagram of the embodiment of the invention;
Fig. 5 B be the embodiment of the invention have a screen vibration-isolating effect synoptic diagram;
Fig. 5 C is the screen vibrationproof output result schematic diagram of the embodiment of the invention;
Fig. 6 is an image display vibration isolation method process flow diagram of the present invention;
Fig. 7 is the screen vibration isolation method process flow diagram of the embodiment of the invention.
[main element description of reference numerals]
200 image control modules
205 three dimensional Phase detectors
210 digital signal processors
215 image phasing units
220 display screens
225 vibration Restrained Control modules
230 revise setup unit
300 images
305 screen display scopes
310 reserve areas
315 move first image that forth screen shows
320 move second image of back screen display
325 move first image that forth screen shows
330 second images after moving
335 move first image of back screen display
400 move preceding display screen
405 move the back display screen
500 display screens
505 pictures
510 display screens
515 pictures
520 objects
525 objects
530 display screens
535 pictures
540 reserve areas
545 display screens
550 pictures
555 objects
P
a, P
a', Q
a, Q
b, R
a, R
b, R
cInitial position mark seat
S601～S609 process step
S701～S729 process step
Embodiment
The present invention is to continue the amplitude of variation that the detecting image display screen moves, calculate through operand spare in the system and can compensate this and move the picture drop value that is produced, and the result who it is calculated that provides a new image indication range, the picture position of being exported for the display device adjustment, with reach make image frame not be subjected to influence that display screen rocks and with the effect of rocking.
For notion used in the present invention and technological means are understood more easily, the accompanying drawing of below will arranging in pairs or groups is for durther example details, more clearly understands spirit of the present invention and means thereof to help one of ordinary skill in the art.
See also Fig. 2, it is the part drawing of one embodiment of the invention, is applicable to the anti-vibrating system of screen-picture on the image display.This system has a display screen 220 for showing any images such as picture, video/audio archive or file on this display device.One image control module 200 is still arranged in this system, in order to writing down the picture that is shown at present on the display screen 220, the picture of file, or the initial position of the shadow lattice of audio/video file (image frame), claim the first image initial position.When this initial position referred to that image outputs such as above-mentioned picture or shadow lattice are on display screen 220, first pixel of this image was in the position that appears on this display screen 220.
Also comprise a three dimensional Phase detector 205 in this system, be used for predicting of the mobile variation of this display screen 220 in the three-dimensional space.Display screen 220 may generation level and vertical change in displacement when rocking, its angle of inclination also may change, therefore be somebody's turn to do anti-vibrating system and also must detect the direction and the variable quantity of its variation, could oppositely be adjusted image position to offset displacement according to direction and displacement thereof that display screen 220 is moved.
Three dimensional Phase detector 205 continues the three-D displacement variable quantity of detecting display screen 220, and sends measured displacement variable to digital signal processor 210 for its computing.Digital signal processor 210 is converted to the two-dimensional plane side-play amount with this three-D displacement amount after receiving the three-D displacement amounts, to reach image is shown in purpose on the two-dimensional plane screen.Digital signal processor 210 is also obtained the first image initial position that above-mentioned image control module 200 is write down, according to the aforementioned two-dimensional migration amount that calculates, oppositely adjust this first image initial position that is received, make and follow the image that changes the position originally because display screen 220 moves, adjust it because of cooperating side-play amount and be output in picture indication range on the display screen 220, claim second image, and when making adjusted this second image be shown on the screen, its picture is connected with the picture of these three dimensional Phase detector 205 measured displacements first image before, cause the same position that image display frame remains on the sight line focus, do not rock as display screen 220.
Still have one to revise setup unit 230 in present embodiment, the space size that institute's desire keeps in the indication range that is set in display screen 220 is provided, this space is used for adjusting for this system the position of second image output.Ask for an interview Fig. 3 A, the space between the screen display scope 305 of image 300 such as file, picture or audio/video file and display screen 220 is desire for adjusting the reserve area 310 (being city, shape of the mouth as one speaks district) that the image outgoing position is reserved.
Therefore image phasing unit 215 is when basis signal is adjusted image position and indication range, check further whether adjusted image position exceeds the compensation range that native system can provide, see also Fig. 3 B and be described as follows: after image phasing unit 215 receives the second image initial position signal, according to this initial position, judge the display position and the scope of second image 320 that moves the back screen display, still can supply in the scope of adjustment at this reserve area 310 as these second image, 320 indication ranges, image phasing unit 215 is exported this second image, 320 pictures promptly according to this second image initial position that is received and second image capturing range that is constituted thereof; Otherwise, ask for an interview Fig. 3 C, can be if second image, 330 indication ranges after should moving have exceeded this reserve area 310 for the border of adjusting, then image phasing unit 215 does not promptly adopt this second image, 330 indication ranges that calculate, make first image 335 displacement of moving the back screen display, and the image content of this image 335 promptly is the content of first image 325 of originally mobile forth screen demonstration in company with this display screen 220.
In native system, use the advantage of digital signal processor (DSP) to be that its execution speed is very fast, overall performance is preferable, can reach real-time running, be well suited for being used for fine tuning video output computing continuous, real-time.
In present embodiment, still there is a vibration Restrained Control module 225 in this system, controls the running that starts or stops of this anti-vibrating system.Present embodiment utilizes the initial position of this vibration Restrained Control module 225 indication image control modules 200 records first image and sends digital signal processor 210 to.In addition, three dimensional Phase detector 205 also begins to transmit the three-D displacement variable quantity to digital signal processor 210 according to the indication of vibration Restrained Control module 225.If vibration Restrained Control module 225 is not sent when starting vibrationproof or sending the indication that stops this anti-vibration functions, though three dimensional Phase detector 205 continues the detecting phase change, but promptly no longer variable quantity is sent to digital signal processor 210, then the anti-vibration functions of this system promptly stops to play a role.
To have anti-vibration functions and handle the difference of watching image frame to produce in order to illustrate further, below conjunction with figs. is specifically illustrated the user through vibrationproof.Please refer to Fig. 4, in the present embodiment, in the three-dimensional moving direction that three dimensional Phase detector 205 is detected, the plane parallel that two dimensions constituted display screen 400 (being the xy plane in this example) before moving wherein, and the 3rd dimension is perpendicular to this display screen 400 (the z axle in this example), therefore when this display screen 400 was taken height, lowers or tilted, the displacement of its vertical direction did not influence the demonstration of picture.When moving to display screen 405 positions, mobile back toward the lower right as this display screen 400, produced a M displacement of ordering to B by the A point, when this M displacement is decomposed into three axle offset amounts respectively be (+x ', + y ',-z '), but therefore because of the z axle is vertical with display screen, when adjusting the display position of image, need only offset+x ' and+displacement of y ' gets final product.Therefore Fig. 5 is an example with the accompanying drawing of in-plane displancement directly, that is the situation of image display z axial translation is not described in addition, but this measure only for convenience of explanation.
Fig. 5 A is the image frame synoptic diagram that does not have or startup prevents the picture vibration function, display screen 500 resolution are 3096 * 2328 pixels, it on this display screen 500 picture 505, picture 505 display positions start from the point of origin P a (0 of screen 500 indication ranges, 0) to (3095,2327), that is the demonstration of picture 505 size identical with display screen 500 gained indication ranges.Modern display screen 500 moves to display screen 510 positions toward right-hand and below, when not having image vibrationproof mechanism, picture 505 also moves to the position of picture 515 in company with turning right down, picture 505 image contents are identical before moving back picture 515 and moving, and the starting point of picture 515 picture indication ranges still is the point of origin P a ' (0,0) of screen display scope.But this moment, 520 of objects in the picture 505 were because of the moving of display screen, and its position also changes to object 525.The user that can look at object 520 originally straight just must move to its sight line the position of object 525.
Fig. 5 B has then shown to have the image vibrationproof picture view of adjusting image outgoing position, compensate for displacement function.
In the present embodiment, when image control module 200 is accepted the indication of vibration Restrained Control module 225 startup anti-vibration functions, earlier with the same big picture 535 scaled down of script with the screen display scope, but make the indication range of its display area less than display screen 530,3056 * 2888 pixels are only arranged, and the display position starting point of picture 535 is also by the initial point Q of screen display scope
a(0,0) becomes Q
b(20,20).Between picture 535 and the display screen 530, every limit has promptly had more the space of 20 pixels, that is picture 535 at x direction of principal axis and y direction of principal axis the mobile space of positive and negative 20 pixels, this space to be arranged respectively promptly be that display screen 530 is adjusted the used reserve area 540 of its outgoing positions for picture 535 when moving.(make things convenient for for the explanation of image and reserve area herein and highlight its mutual relation, not according to correct proportions rendered images and reserve area size.) size of this reserve area controls by the setting in the aforementioned correction setup unit, the visual requirements set correction of this reserve area is " x axle, each positive and negative 20 pixel of y direction of principal axis ", " x axle, each positive and negative 40 pixel of y direction of principal axis ", " x axle, each positive and negative 80 pixel of y direction of principal axis " etc.The correction setting value is big more, and the scope that can be used for adjusting the image outgoing position is also big more, and compensation effect is good more; Picture also can be compressed as 535 area sizes that can show, also can influence to some extent with the picture fineness but comparatively speaking.
After picture 535 on the display screen 530 dwindles, when display screen 530 past+x direction displacement 10 units, past+y direction displacement 5 units and past+z direction displacement 10 units, when becoming display screen 545, the three-D displacement variable quantity (+10 that three dimensional Phase detector 205 in the system is just measured with it, + 5, + 10) be sent to digital signal processing unit 210, after being converted to the two-dimensional migration amount, learn that its planar offset is (+10, + 5), then digital signal processor 210 promptly calculates in order to offset above-mentioned planar offset, the display position of the picture 550 on the display screen 545 should past-x direction displacement 10 units and past-y direction displacement 5 units, then on the display screen 545 picture 550 initial positions that should show promptly by R
b(20,20) change to R
c(10,15).
Should prevent the amplitude of vibrating system gained in order to the compensation blurring, be subjected to this reserve area to set the influence of size, example with Fig. 5 B, between picture 535 and the screen display scope, set definite value be " x axle, each positive and negative 20 pixel of y direction of principal axis " in the setup unit because of revising, so with the initial position Q of picture 535
b(20,20) are example, and it is the scope square area that can be surrounded between (0,0) to its diagonal angle (40,40) movably, that is the displacement that refers to picture 550 is as being no more than x, the y axle each ± 20 pixels, aforementioned representative is through adjusting the initial position R of output area
c, the scope that may occur display screen 530 (0,0) to (40,40) between any point.But if display screen 545 displacement amplitudes surpass 540 of reserve areas can be for the boundary of adjusting, then this system does not promptly adjust the operation of image position, changes and moves picture 550 according to the displacement of display screen 545, its initial position is R
bBut not R
c, show this image as the mode of Fig. 5 A.
The present invention is except that providing one to prevent the system of display frame vibration, and other provides one can prevent the method that display frame is vibrated, and the step explanation of this vibration isolation method please cooperate Fig. 6 to consult.
This vibration isolation method is the mechanism (S601) with the command triggers vibrationproof of accepting a startup anti-vibration functions, picture position and vibrationproof zone (S603) thereof of elder generation's locating and displaying screen 220 when anti-vibration functions starts, the back, location is with the moving direction and the displacement (S605) of three dimensional Phase detector 205 detecting display screens 220, and the digital signal processor 210 that is sent to the tool arithmetic capability is calculated, obtain compensation rate and the direction (S607) thereof of offsetting the picture displacement, according to the compensation rate that is calculated and direction picture is output in correct display position (S609) on the display screen 220 again.
Further understand the accessible anti-vibration functions of this method by making, the embodiment of a detailed explanation below is provided, please cooperate the flow process of Fig. 7 and following explanation to consult.
This method is when display screen 220 show images, receive the order (S701) that starts anti-vibration functions earlier, vibration Restrained Control module 225 is promptly inspected to revise and is set the reserve area size (S703) that desire is adjusted for image in the setup unit 230, then dwindles first image (S705) on the display screen 220 according to its reserve area that sets; After dwindling, image control module 200 these images of record are output in the initial position (S707) of first pixel on the display screen 220, this three dimensional Phase detector 205 was promptly detected display screen 220 and move the displacement (S709) that is produced in the three-dimensional space as if moving display screen curtain 220 this moment.After three dimensional Phase detector 205 detects displacement, be about to this displacement and be sent to digital signal processor 210; Simultaneously, image control module 200 also is sent to digital signal processor 210 (S711) with the first image initial position that is write down, and carries out computing for this processor in the lump.
After adjusting image output, the user can determine whether to stop the running of screen anti-vibration functions, therefore must differentiate whether receive the order (S727) that stops anti-vibration functions, as do not stop the image anti-vibration functions, then when display screen 220 has change in displacement, three dimensional Phase detector 205 continues that the three-D displacement variable quantity that records is sent to digital signal processor 210 and repeats above-mentioned disposal route (S711 is following), as stop the function of image vibrationproof, then each element promptly no longer continues the image position after moving is adjusted, and image recovered original size (S729), finish the step of present embodiment method.
The present invention and each embodiment thereof applicable to digital camera, video camera, PDA(Personal Digital Assistant) or e-book (eBook) etc. similar have display screen, can be for the device browsing, watch or read, be shown in the image of archives such as picture on the said apparatus display screen, audio-visual, file in order to adjustment.Aforementioned cited project for being suitable for partial devices of the present invention, is not the category that is suitable in order to limit the present invention only, if any other spirit according to the invention and material change's technological means of the present invention not, all belongs to the scope of protection that the present invention is contained.
Claims (10)
1. the anti-vibrating system of the screen of an image display is characterized in that, comprising:
One display screen is for this image display output static images or dynamic image such as audio-visual;
One image control module is shown in one first image on this display screen in order to scaled down, writes down this first image simultaneously and is shown in one first image initial position on this display screen and is transmitted;
One three dimensional Phase detector is in order to detect the three-D displacement variable quantity of this display screen position at any time;
One digital signal processor, in order to receive this first image initial position and this three-D displacement variable quantity, after as calculated this three-D displacement variable quantity being converted to a two-dimensional migration amount, according to this first image initial position and this two-dimensional migration amount, calculate the one second image initial position of this image display after moving, this digital signal processor is also exported one second image initial position signal according to this second image initial position; And
One image phasing unit receives this second image initial position signal, should be shown in the position of the image indication range on this display screen according to this second image initial position signal adjustment, and export this display screen to.
2. the screen of image display as claimed in claim 1 is prevented vibrating system, it is characterized in that, more comprise a vibration Restrained Control module, utilize this three dimensional Phase detector of control to begin or stop to transmit this three-D displacement variable quantity, to start or stop the effect of this anti-vibrating system to this digital signal processor.
3. the screen of image display as claimed in claim 1 is prevented vibrating system, it is characterized in that, comprise that more one revises setup unit, be used to set the viewing area that this display screen keeps, the viewing area of this reservation is used for this system and is adjusted the position that this second image shows.
4. the screen of image display as claimed in claim 1 is prevented vibrating system, it is characterized in that, in the three-D displacement direction that this three dimensional Phase detector is detected, wherein two planes that dimension constituted are parallel with this display screen, and the 3rd dimension is vertical with this display screen.
5. the screen vibration isolation method of an image display is characterized in that, comprises the following steps:
Accept to start the order of image anti-vibration functions;
Locate a display screen position;
Detect the three-D displacement variable quantity of this display screen position;
Changing this three-D displacement variable quantity is a two-dimensional migration amount and calculating frame compensation amount; And
Export picture in this display screen according to this compensation rate.
6. the screen vibration isolation method of image display as claimed in claim 5 is characterized in that, in the step of this display screen position, location, comprises following substep:
Read the reserve area of this display screen that sets in the correction setup unit, this reserve area is used for the display position of adjusting one second image;
According to the scope of this reserve area, dwindle being shown in first image of 1 on the screen, make the indication range of this first image picture displayed less than this display screen; And
Initial position by this first image of an image control unit records.
7. the screen vibration isolation method of image display as claimed in claim 6 is characterized in that, is the two-dimensional migration amount and calculates in the step of frame compensation amount in conversion three-D displacement amount, comprises following substep:
Receive and change this three-D displacement variable quantity by a digital signal processor and be this two-dimensional migration amount; And
According to the initial position of this two-dimensional migration amount and this first image, calculate one second image initial position on this display screen that is shown in after moving, can compensate this display screen when making this display screen export this second image and move the picture skew that is produced.
8. the screen vibration isolation method of image display as claimed in claim 7 is characterized in that, in exporting picture after the step of this display screen according to compensation rate, more comprises the following step:
Judge whether to receive the order that stops the image anti-vibration functions; And
As receive the order that stops the image anti-vibration functions, stop to transmit this three-D displacement variable quantity to this digital signal processor.
9. the screen vibration isolation method of image display as claimed in claim 7 is characterized in that, calculate the step of this second image initial position after, comprise following substep:
Export one second image initial position signal according to this second image initial position; And
Should be shown in the position of the image indication range on this display screen according to this second image initial position signal adjustment.
10. the screen vibration isolation method of image display as claimed in claim 9 is characterized in that, in the step of the position of adjusting the image indication range according to this second image initial position signal, more comprises following substep:
Differentiate the border whether this second image that is constituted according to this second image initial position exceeds the indication range of this display screen by an image phasing unit;
Do not exceed the indication range border of this display screen as this second image, the second image indication range that this image phasing unit promptly constitutes according to this second image initial position replaces this first image and exports on this display screen; And
Exceed the indication range border of this display screen as this second image, this image phasing unit is promptly ignored this second image that this second image initial position is constituted, and exports this display screen to this first image.
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| CN200810127657A CN101625844A (en) | 2008-07-07 | 2008-07-07 | System and method for preventing screen of image display device from vibrating |
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