CN102612838A - Three dimensional image displaying method, system, three dimensional television and glasses - Google Patents
Three dimensional image displaying method, system, three dimensional television and glasses Download PDFInfo
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- 239000011521 glass Substances 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000004044 response Effects 0.000 claims abstract description 81
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 56
- 230000001360 synchronised effect Effects 0.000 claims abstract description 19
- 238000009877 rendering Methods 0.000 claims description 83
- 230000000694 effects Effects 0.000 description 18
- 230000002045 lasting effect Effects 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 210000004556 brain Anatomy 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000035772 mutation Effects 0.000 description 3
- 238000010422 painting Methods 0.000 description 3
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- 210000000887 face Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
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- 230000010287 polarization Effects 0.000 description 1
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- 230000002459 sustained effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000013316 zoning Methods 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
- G09G3/003—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to produce spatial visual effects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/398—Synchronisation thereof; Control thereof
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/024—Scrolling of light from the illumination source over the display in combination with the scanning of the display screen
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- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
A three dimensional (3D) image displaying method, a system, a 3D television and glasses are disclosed, wherein the three dimensional image displaying method includes: extracting a synchronous control signal from a 3D image signal, and generating a corresponding backlight drive signal; according to the backlight drive signal, when one or more regions in N regions, which are equally divided along the row direction in a liquid crystal display screen, complete a refresh response to current image field data of the left or right eye, controlling backlight regions corresponding to one or more regions to be illumined, and then to be turned off in a preset time range before the backlight regions are illumined; wherein, in the preset time range corresponding to any one backlight region is illumined, controlling the corresponding liquid crystal display screen region to only complete outputting of the image field data of the corresponding left or right eye.
Description
A kind of 3D rendering display methods, system, 3D TVs and optometric technology field
The present invention relates to LCD TV field, more particularly to a kind of 3D method for displaying image, system, 3D TVs and glasses.
Background technology
Realize that the general principle that 3D is shown is, by by optics or processing of circuit, the two width pictures with small parallax to be transferred into left eye and right eye respectively, and do not interfere with each other, so as to form stereo perception under corticocerebral synthesis.
At present, 3D Display Techniques can be divided into spectacle and the major class of an eye two, wherein, the blunt mirror 3D technologies of mesh include：Aberration formula 3D technology, general polarization type 3D technology, active-shutter 3D technology.
By taking active-shutter 3D technology as an example, it mainly realizes 3D effects by improving the refresh rate of picture, video image is divided into two by frame, form two a series of paintings faces of correspondence left eye and right eye, pass through the cooperation of shutter type 3 D spectacles, so that this two a series of paintings face respectively enters left and right eyes, 3D stereopsis is finally synthesized in the brain.
The advantage of active-shutter 3D technology is that by full HD 3D effect and picture brightness change is smaller, and difficult point is image frame to show with glasses folding to match, need to synchronize control to image frame and 3D glasses in practical application.
For LCDs, when the picture signal scanning of LCDs can not synchronize control with the opening and closing of 3D glasses, the performance that 3D is shown can be affected, in fact it could happen that the crosstalk of left-and right-eye images, it is impossible to reach good 3D display effects.
The content of the invention
The present invention proposes a kind of 3D rendering display methods, system, 3D TVs and glasses to solve above-mentioned technical problem present in background technology, can eliminate the crosstalk of left-and right-eye images during 3D is shown, improves 3D display effects.
The present invention technical solution be：
The embodiment of the present invention provides a kind of 3D rendering display methods, and methods described includes：
The synchronous control signal in 3D rendering signal is extracted, and produces corresponding backlight drive signal；According to the backlight drive signal, after the refresh response to current left eye or eye image field data is completed in LCDs with one or more of N number of region of the capable equal cropping in direction point region, the corresponding backlight area in one or more of regions is controlled to light, and the preset time scope before subsequent backlight area is lighted is closed；Wherein, in the range of the preset time that any backlight area of correspondence is lighted, corresponding LCDs region is controlled to be only completed the output of the image field data of correspondence left eye or right eye.
It is preferred that, methods described also includes：
It is just blunt to produce corresponding glasses drive signal according to the synchronizing signal；
According to the glasses drive signal, the opening and closing of blunt mirror of mesh of the control viewing 3D rendering or so eyeglass, the whole period that the opening time of the glasses left side or the right eyeglass is lighted successively for each backlight area during left eye or eye image signal output.
Further, methods described also includes：In the range of the preset time, control any row liquid crystal line in the corresponding LCDs region of corresponding backlight area to extinguish after completing the refresh response of left-eye image field data, before the refresh response that proceeds by eye image field data, and extinguish after completing the refresh response of eye image field data, before the refresh response that proceeds by left-eye image field data.
A kind of television set shown for 3D rendering, including：LCDs unit, back light unit, receiving unit and 3D display control units；Wherein,
The LCDs unit and back light unit, are divided into N number of region with the capable equal cropping in direction；The receiving unit, for receiving 3D rendering signal；
The 3D display control units include：
Liquid crystal drive subelement, for driving the LCDs unit to carry out picture field Refresh Data；Backlight drive subelement, it is just blunt to produce corresponding backlight drive signal according to the synchronizing signal for extracting the synchronous control signal in the 3D rendering signal；It is just blunt according to the backlight drive signal, after some region in the LCDs unit completes the refresh response to current left eye or eye image field data, backlight area in the control corresponding back light unit in some region is lighted, and the preset time scope before subsequent backlight area is lighted is closed, wherein, in the range of the preset time that any backlight area of correspondence is lighted, corresponding LCDs region is controlled to be only completed the output of the image field data of correspondence left eye or right eye.
It is preferred that, the backlight drive subelement is additionally operable to：In the range of the preset time, control any row liquid crystal line in the corresponding LCDs region of corresponding backlight area to extinguish after completing the refresh response of left-eye image field data, before the refresh response that proceeds by eye image field data, and extinguish after completing the refresh response of eye image field data, before the refresh response that proceeds by left-eye image field data.
It is preferred that, the 3D display control units, in addition to：
The blunt mirror driving subelement of mesh, for producing the corresponding blunt mirror drive signal of mesh according to the synchronizing signal；According to the glasses drive signal, the whole period that the opening time of the opening and closing of the blunt mirror of mesh of the control viewing 3D rendering or so eyeglass, the glasses left side or the right eyeglass is lighted successively for each backlight area during left eye or eye image signal output.
It is preferred that, the back light unit uses LED/light source.
A kind of glasses for being used to watch 3D rendering, including：
Opening and closing signal receiving unit, for receiving glasses drive signal；
Open and close controlling unit, for according to the glasses drive signal, the opening and closing of the glasses of the control viewing 3D rendering or so eyeglass, the whole period that the opening time of the glasses left side or the right eyeglass is lighted successively for each backlight area during left eye or eye image signal output, wherein, in any backlight area of correspondence
In the period lighted, corresponding LCDs region is controlled to be only completed the output of the image field data of correspondence left eye or right eye.
It is preferred that, within the period that any backlight area is lighted, any row liquid crystal line in the corresponding corresponding LCDs region of backlight area extinguishes after completing the refresh response of left-eye image field data, before the refresh response that proceeds by eye image field data, and extinguishes after completing the refresh response of eye image field data, before the refresh response that proceeds by left-eye image field data.
A kind of 3D rendering shows system, including：The display device shown for 3D rendering and the glasses for watching 3D rendering；
The display device includes：LCDs unit, back light unit, receiving unit and 3D display control units；Wherein,
The LCDs unit and back light unit, are evenly dividing as N number of region with capable direction；The receiving unit, for receiving 3D rendering signal；
The 3D display control units include：
Liquid crystal drive subelement, for driving the LCDs unit to carry out picture field Refresh Data；Backlight drive subelement, it is just blunt to produce corresponding backlight drive signal according to the synchronizing signal for extracting the synchronous control signal in the 3D rendering signal；It is just blunt according to the backlight drive signal, after some region in the LCDs unit completes the refresh response to current left eye or eye image field data, backlight area in the control corresponding back light unit in some region is lighted, and the preset time scope before subsequent backlight area is lighted is closed, wherein, in the range of the preset time that any backlight area of correspondence is lighted, corresponding LCDs region is controlled to be only completed the output of the image field data of correspondence left eye or right eye；
The blunt mirror driving subelement of mesh, corresponding glasses drive signal is produced for just blunt according to the synchronizing signal；The glasses include：
Opening and closing signal receiving unit, for receiving glasses drive signal；Open and close controlling unit, for according to the glasses drive signal, the whole period that the opening time of the opening and closing of the glasses of the control viewing 3D rendering or so eyeglass, the glasses left side or the right eyeglass is lighted successively for each backlight area during left eye or eye image signal output.
It is preferred that, the backlight drive subelement is additionally operable to：In the range of the preset time, control any row liquid crystal line in the corresponding LCDs region of corresponding backlight area to extinguish after completing the refresh response of left-eye image field data, before the refresh response that proceeds by eye image field data, and extinguish after completing the refresh response of eye image field data, before the refresh response that proceeds by left-eye image field data.
Using the embodiment of the present invention, compared with conventional solution, at least with advantage following prominent：The embodiment of the present invention keeps the field frequency of picture signal constant, a left side is realized by way of backlight control, the timesharing of eye image is shown, the lasting lighting time in preset each region of backlight, after some region in the N number of region being evenly dividing in LCDs with capable direction completes the refresh response to current left eye or eye image field data, the corresponding backlight area in the region is controlled to light, and the time is remain on for preset time value, i.e., when a certain liquid crystal region proceeds by right and left eyes image scanning switching, the corresponding backlight area of the liquid crystal region is extinguished, so as to realize the separation of right and left eyes image picture, the problem of effectively solving left and right frame crosstalk.
Brief description of the drawings
Fig. 1 is the region division schematic diagram of LCDs and back light unit in the embodiment of the present invention；Fig. 2 is a kind of step schematic flow sheet of 3D rendering display methods embodiment of the invention；
Fig. 3 is LCDs refresh scan schematic diagram in the embodiment of the present invention；
Fig. 4 is a kind of structural representation of the television set embodiment shown for 3D rendering of the present invention；Fig. 5 is used for the structural representation for the television set embodiment that 3D rendering is shown for the present invention is another；Fig. 6 is a kind of structural representation for being used to watch the eyeglasses embodiment of 3D rendering of the present invention；Fig. 7 shows the structural representation of system for a kind of 3D rendering of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, clear, complete description is carried out to the technical scheme in the embodiment of the present invention, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.
In the general principle of liquid crystal display, LCDs and back light unit are generally divided into corresponding N number of region with capable direction, as shown in Figure 1, because each liquid crystal display area includes a plurality of liquid crystal line, therefore, each two field picture of liquid crystal display is made up of some rows, and is driven successively with behavior unit.There is liquid crystal brightness to maintain characteristic, i.e., after line n is driven, can maintain the brightness, the drive signal driving new until having.So, when showing adjacent two field pictures, such as n-th frame and the（N+1) during frame, it is n-th frame to have partial content in (n+1) two field picture.When showing 3D contents, because between adjacent two frame there is very big difference in picture material, and need to give left eye and right eye respectively, therefore, left-and right-eye images are mixed in the most of the time, human eye cannot be distinguished by the picture material of right and left eyes, so as to cause two intraoculars to hold crosstalk, image overlaps.
In order to eliminate the crosstalk of above-mentioned left-and right-eye images, good 3D display effects are reached, the embodiment of the present invention provides a kind of 3D rendering display methods, as shown in Fig. 2 this method comprises the following steps flow：Step 201, the synchronous control signal extracted in 3D rendering signal, and produce corresponding backlight drive signal；
Picture signal received by display screen mainboard can be the 3D rendering signal of various forms；After 3D rendering signal is received, the 3D rendering signal can be converted to third constellations voltage differential signal by display screen mainboard（Low-Voltage Differential Signaling, LVDS) display screen driving plate is sent into after form（), T_CON the driving display screen time-division shows left-eye image signal and eye image signal；Step 202, according to the backlight drive signal, when being completed in LCDs with one or more of N number of region of the capable equal cropping in direction point region to when front left mesh is blunt or after the refresh response of eye image field data, control the corresponding backlight area in one or more of regions to light, and lighted in subsequent backlight area
Preset time scope before is closed；Wherein, in the range of the preset time that any backlight area of correspondence is lighted, corresponding LCDs region is controlled to be only completed the output of the image field data of correspondence left eye or right eye.
Active-shutter 3D technology of the prior art realizes the display of 3D rendering using time-sharing procedure, mainly realizes 3D effect by improving the refresh rate of picture.Image is divided into two by frame by 3D display screens, form two a series of paintings faces of correspondence left eye and right eye, right and left eyes image is shown and is transferred in eyes in turn according to sequential, in actual applications, 3D display screens order sends right and left eyes image signal, and synchronous control signal is sent, light valve spectacles receive the opening and closing that left and right ophthalmic len is controlled after synchronous control signal, the right and left eyes of user is received right and left eyes image signal respectively.
Generally, the refreshing frequency of 3D display screens must reach more than 120Hz, that is to say, that allow images of left and right eyes to receive image of the frequency in more than 60Hz, just can guarantee that user sees the continuous 3D rendering effect without flicker.
The embodiment of the present invention can keep the field frequency of picture signal constant, a left side is realized by way of backlight control, the timesharing of eye image is shown, the lasting lighting time in preset each region of backlight, after some region in the N number of region being evenly dividing in LCDs with capable direction completes the refresh response to current left eye or eye image field data, the corresponding backlight area in the region is controlled to light, and the time is remain on for preset time value, i.e., in the range of the preset time that any backlight area of correspondence is lighted, controlling corresponding LCDs region to be only completed, the left mesh of correspondence is blunt or output of image field data of right eye, so as to realize the separation of right and left eyes image picture, the problem of effectively solving left and right frame crosstalk.
In addition, it is necessary to coordinate 3D glasses to watch 3D rendering for the blunt mirror 3D Display Techniques of mesh.Therefore, it is also desirable to extract synchronous control signal from 3D rendering signal, corresponding glasses drive signal is produced according to the synchronizing signal；According to the glasses drive signal, the opening and closing of glasses of the control viewing 3D rendering or so eyeglass, the whole period that the opening time of the glasses left side or the right eyeglass is lighted successively for each backlight area during left eye or eye image signal output.
The signal of LED drivings is controlled according to the synchronous control signal and controlled to the viewing 3D figures
As the signal of the glasses transmission chip opening and closing of signal is synchronously produced, left eyeglass lens are closed during control opening right eye eyeglass, or, close right eye eyeglass when opening left eyeglass lens.
For the ease of clearly describing concrete technical scheme of the present invention, clear, complete description will be carried out by specific embodiment below.
Embodiment one
The embodiment of the present invention realizes the separation of right and left eyes image picture by backlight scanning control method, the problem of effectively solving left and right frame crosstalk.
It is LCDs and the schematic diagram of back light unit region division in the embodiment of the present invention as shown in Fig. 1.As shown in the drawing, LCDs and back light unit are divided into zonel, zone 2, zone3...zone n n area i or, each area i with capable direction respectively or are refreshed and controlled by timesharing.
Generally, the division of backlight area is at least four regions.And the quantity of specific zoning depends primarily on the response time of LCDs.The region that backlight area is divided is more, and the light efficiency of backlight can be higher, but light output amount is reduced, and brightness can reduce, and those skilled in the art can take in determination according to the different response time performances of LCDs.
In the embodiment of the present invention, backlight can use LED (Light Emitting Diode, light emitting diode) light source, including enhanced LED (Entangled Light Emitting Diode, ELED) light source.
Lower mask body introduces back light unit and LCDs in the embodiment of the present invention are how to realize Synchronization Control.
First, understanding definitions is carried out to some parameters occurred in the embodiment of the present invention：
Assuming that the full-screen image of starting LCDs is shown as the image that gray scale is gl, when carrying out right and left eyes image refreshing, the first two field picture is the image that gray scale is g2, and the second two field picture is the image that gray scale is g3；For gray scale gl image to gray scale g2 image, then to gray scale g3 image, be defined as follows parameter（It is not same GTG for image, then considers using maximum response time or approximate maximum response time as the response time of inter frame image）, wherein：
TfmmeRepresent the liquid crystal scanning frame period；
Tlc_SCi„„lwgRepresent that liquid crystal is scanned to the time of the last item line by first line；
—∞, represent each LED backlight region（Zone l ~ zone n) lasting lighting time；2 expression liquid crystal display screen images are changed to gray scale g2 response time by gray scale gl；^-^ represent that liquid crystal display screen image is changed to gray scale g3 response time by gray scale g2；
TholdRepresent that liquid crystal is in the time of stable state after corresponding gray scale variation is completed；
Tgiass—.Represent the time that 3D glasses left eye pieces or right eye piece are persistently opened.
As shown in figure 3, be LCDs refresh scan schematic diagram, wherein, curve 1 represents that first liquid crystal line corresponding to first region zonel of LCDs completes gray scale gl to gray scale g2 and by gray scale g2 to gray scale g3 response curve；Curve 2 represents that the last item liquid crystal line corresponding to first region zonel of LCDs completes gray scale gl to gray scale g2 and by gray scale g2 to gray scaleg3 response curve；Curve 3 represents that the last item liquid crystal line corresponding to LCDs last region zone n completes gray scale gl to gray scale g2 and by gray scale g2 to gray scale g3 response curve.
When the last item liquid crystal line corresponding to first region zonel completes gray scale gl to gray scale g2 response, and the liquid crystal molecule of the row subregion is in Hold states, i.e., in Tlc——g l n + Tgi—g_ moment, backlight first area zonel starts scanning, and it is r to continue lighting timeB— m>¾, then extinguish；When the last item liquid crystal line corresponding to second row subregion zone2 completes gray scale gl to gray scale g2 response, and the liquid crystal molecule of the row subregion is in Hold states, that is, exist（rfc / M ) g2Moment, backlight second area zone2 start scanning, continue lighting time be;, then extinguish；... when the last item liquid crystal line corresponding to last row subregion zone n completes gray scale gl to gray scale g2 response, and the liquid crystal molecule of the row subregion is in Hold states, that is, existlc—scanning l n ) *n+ 7 2Moment, the n-th region of backlight zone n start scanning, and it is r to continue lighting timeB— m>¾, then extinguish；So far, LCDs completes gray scale gl to g2 a cycle liquid crystal scanning display and backlight scans display；And 3D-glasses opening times are whole period of backlight when n is lighted from zone 1 to zone.For LCDs, gradation of image by g2 to g3 scanning refresh activity with gradation of image by gl to g2 scanning motion one
Cause, no longer carry out praising and stating herein.
The Synchronization Control process of back light unit and LCDs is illustrated exemplified by gl to g2 scanning refreshes by the gradation of image of LCDs below.
The separated principle of right and left eyes is shown according to 3D, can draw LCDs gradation of image complete by gl to g2 change when, backlight area zone 1 lighting time not should extend into the gradation of image of LCDs by g2 to g3 when backlight zone 1 opening time, i.e. in the range of the preset time that any backlight area of correspondence is lighted, corresponding LCDs region is controlled to be only completed the output of the image field data of correspondence left eye or right eye.The gradation of image of correspondence LCDs by g2 to g3 when backlight zone 1 opening time, another ophthalmic len of 3D glasses starts to open at.When above-mentioned twice intersects, an ophthalmic len of 3D glasses will see the image of another ophthalmic len of correspondence, so as to cause two intraoculars to hold crosstalk, image overlaps.It therefore, it can draw below equation：
T, ■ I η + Τ Ί +T , <Tf +T Ί,+Γ, In (1) basis（1) formula, can derive acquisition, and the 3D glasses left side or the lasting opening time of the right eyeglass should observe below equation：
T, <Tt +T 7 ,-Γ, 9(2) simultaneously, in order to ensure the display effect of 3D rendering, the opening of 3D glasses should be controlled, the shut-in time strictly lights with corresponding backlight area, the shut-in time is synchronous and is equal or approximately equal, otherwise, the 3D rendering finally shown is it is possible that the phenomenon that top and the bottom regional luminance is not waited.In order to avoid this defect, below equation derivation has been carried out again：
First backlight area zonel is r at the time of openingfc— „; +7^— 2, it is at the time of last backlight area zone n openings（ Tlc—scaming In ) "n+Tgl g2, therefore, the n backlight lightenings time such as formula from zone 1 to zone（3) shown in：
T-- Shang (3) n n n
With reference to（2) formula with（3) formula, can be obtained：
TR1 <Tf +T 7 ,-Γ, 9- Γ, (4) simultaneously, to reach good display effect, the image boundary gray scale that main removal backlight may be introduced using scanning is undergone mutation（Ghost) phenomenon, in the range of the preset time that any backlight area is persistently lighted, any row liquid crystal line in the corresponding LCDs region of the backlight area extinguishes after completing the refresh response of left-eye image field data, before the refresh response that proceeds by eye image field data, and extinguishes after completing the refresh response of eye image field data, before the refresh response that proceeds by left-eye image field data.With reference to Fig. 3, by taking backlight area zone 1 as an example for, the time that backlight area zone 1 is persistently lighted should the first row liquid crystal line by gray scale g2 to g3 response before terminate so that formula（ 5 ).Certainly, if by ghost controls in certain interval of standing, formula（5) result can accordingly expand.
Tm≤ Γ, ,-Γ, In (5) combine formula（3)、 （5) it, can show that the time that each regional sustained of backlight is lighted is formula（6) shown in, that is, take（3) formula and（5) the time minimum value in formula：
T < mini ι , + Γ , - Γ Ίχ 2, ,-, In] the lasting lighting time signal of J (6) backlight area can pass through FPGA (Field-Programmable Gate
Array, field programmable gate array）The timing control signal that chip sends backlight is completed, and controls it to light or close the LED/light source output drive signal of each backlight area by the chip.
In addition, the mode for sending above-mentioned eyeglass opening and closing signal to glasses includes：The mode of infrared, radio frequency or bluetooth.
The purpose of the embodiment of the present invention is by LED backlight and LCDs synchronous flashing so that right and left eyes image, which reaches during 3D glasses, separates right and left eyes 3D rendering, and 3D rendering is finally synthesized in human brain.Overlapping smaller of right and left eyes 3D rendering, 3D effect is better, 3D right and left eyes image ghost images（3D crosstalk)
It is smaller.Meanwhile, the moving image display performance of great lifting liquid crystal display is conducive to continuity, the process of 3D motion image by the synchronous modulation of LED backlights and LCDs.As can be seen here, caused by the lasting lighting time of preset backlight area after liquid crystal line all in the regions of zone 1 all completes the refresh response to current left eye or eye image field data, the backlight in the regions of zone 1 is opened again, now, only display images of zone 1, other parts are black；Opened after ensuring that liquid crystal lines all in the regions of zone 2 all complete the refresh response to current left eye or eye image field data, then by the backlight in the regions of zone 2, the like, the image for completing entire picture is shown.So as in the case where the field frequency of holding picture signal is constant, it is ensured that be not in the phenomenon of left-and right-eye images crosstalk in each viewing area in each visible display of liquid crystal.The 120Hz LCDs application embodiment of the present invention, can realize the same 3D display effects of same 240Hz LCDs.Meanwhile, coordinating the embodiment of the present invention also to can reach using 240Hz LCDs or the panel of other scan frequencies improves the effect of 3D display effects.It can be seen that, either the 3D of 120Hz LCDs is realized, still the 3D performance improvements of the LCDs of higher display frequency, and the present invention has good compatibility.
Embodiment two
Corresponding above-mentioned 3D rendering display methods, the embodiment of the present invention additionally provides a kind of television set shown for 3D rendering, as shown in figure 4, the television set 40 includes：LCDs unit 401, back light unit 402, receiving unit 403 and 3D display control units 404;Wherein,
The LCDs unit 401 and back light unit 402, are divided into N region, as shown in Figure 1 with the capable equal cropping in direction；
The receiving unit 403, for receiving 3D rendering signal；
Picture signal received by receiving unit 403 can be the 3D rendering signal of various forms；After 3D rendering signal is received, receiving unit 403 can change the 3D rendering signal
To send into display screen driving plate after low-voltage differential signal form（), T_CON the driving television display screen time-division shows left-eye image signal and eye image signal；
The 3D display control units 404 include：
Liquid crystal drive subelement 4041, for driving the LCDs unit 401 to carry out picture field Refresh Data；
Backlight drive subelement 4042, for extracting the synchronous control signal in the 3D rendering signal, corresponding backlight drive signal is produced according to the synchronizing signal；It is just blunt according to the backlight drive signal, when some region in the LCDs unit 401 is completed to when front left mesh is blunt or after the refresh response of eye image field data, the backlight area in the corresponding back light unit in the region is controlled to light, and the preset time scope before subsequent backlight area is lighted is closed, wherein, in the range of the preset time that any backlight area of correspondence is lighted, corresponding LCDs region is controlled to be only completed the output of the image field data of correspondence left eye or right eye.
3D television sets provided in an embodiment of the present invention can keep the field frequency of picture signal constant, realize that the timesharing of left-and right-eye images is shown by way of backlight control, pass through the lasting lighting time in each region of the preset backlight of backlight drive subelement, when some region in the N number of region being evenly dividing in LCDs with capable direction is completed to when front left mesh is blunt or after the refresh response of eye image field data, control the corresponding backlight area in the region to light, and be remain on the time for preset time value rB— ra>¾, i.e. when a certain liquid crystal region proceeds by right and left eyes image scanning switching, the corresponding backlight area of the liquid crystal region is extinguished, so that the separation of right and left eyes image picture is realized, the problem of effectively solving left and right frame crosstalk.
To reach good display effect, the image boundary gray scale that main removal backlight may be introduced using scanning is undergone mutation（Ghost) phenomenon, the backlight drive subelement, is additionally operable to：In the range of the preset time, control any row liquid crystal line in the corresponding LCDs region of corresponding backlight area to extinguish after completing the refresh response of left-eye image field data, before the refresh response that proceeds by eye image field data, and extinguish after completing the refresh response of eye image field data, before the refresh response that proceeds by left-eye image field data.
In addition, for spectacle 3D Display Techniques, above-mentioned 3D television sets need to coordinate the blunt mirror of 3D mesh to watch 3D rendering.Therefore, in another 3D television sets, as shown in figure 5, the 3D display control units 404 also include：The blunt mirror driving subelement 4043 of mesh, for producing corresponding glasses drive signal according to the synchronizing signal；According to the glasses drive signal, the opening and closing of glasses of the control viewing 3D rendering or so eyeglass, the whole period that the opening time of the glasses left side or the right eyeglass is lighted successively for each backlight area during left eye or eye image signal output.
In this embodiment, it is necessary to which glasses driving subelement extracts synchronous control signal from 3D rendering signal, corresponding glasses drive signal is produced according to the synchronizing signal；According to the glasses drive signal, the opening and closing of glasses of the control viewing 3D rendering or so eyeglass, the whole period that the opening time of the glasses left side or the right eyeglass is lighted successively for each backlight area during left eye or eye image signal output.
Pass through the lasting lighting time T of preset backlight areaBL― mgWith the glasses left side or the opening time of the right eyeglass, so that being opened after liquid crystal line all in the regions of zone 1 all completes the refresh response to current left eye or eye image field data, then by the backlight in the regions of zone 1, now, only display images of zone 1, other parts are black；Opened after ensuring that liquid crystal lines all in the regions of zone 2 all complete the refresh response to current left eye or eye image field data, then by the backlight in the regions of zone 2, the like, the image for completing entire picture is shown.So as in the case where the field frequency of holding picture signal is constant, it is ensured that be not in the phenomenon of left-and right-eye images crosstalk in each viewing area in each visible display of liquid crystal.
The back light unit can use LED/light source, including enhanced LED/light source.
The timing control signal that the lasting lighting time signal of the backlight area can send backlight by FPGA chips is completed, and controls it to light or close the LED/light source output drive signal of each backlight area by the chip.
In addition, the mode for sending above-mentioned eyeglass opening and closing signal to glasses includes：The mode of infrared, radio frequency or bluetooth.
Embodiment three
Correspondingly, the embodiment of the present invention additionally provides a kind of blunt mirror of mesh for being used to watch 3D rendering, such as Fig. 6 institutes
Show, the glasses 60 include：
Opening and closing signal receiving unit 601, for receiving glasses drive signal；
Open and close controlling unit 602, for according to the glasses drive signal, the opening and closing of the glasses of the control viewing 3D rendering or so eyeglass, the whole period that the opening time of the glasses left side or the right eyeglass is lighted successively for each backlight area during left eye or eye image signal output, wherein, within the period that any backlight area of correspondence is lighted, corresponding LCDs region is controlled to be only completed the output of the image field data of correspondence left eye or right eye.
The glasses are to coordinate the television set that 3D rendering is shown that is used in embodiment two, to realize viewing 3D images.
In addition, within the period that any backlight area is lighted, any row liquid crystal line in the corresponding corresponding LCDs region of backlight area extinguishes after completing the refresh response of left-eye image field data, before the refresh response that proceeds by eye image field data, and extinguishes after completing the refresh response of eye image field data, before the refresh response that proceeds by left-eye image field data.
The mesh blunt mirror provided in an embodiment of the present invention for being used to watch 3D rendering can be under the control of the television set shown for 3D rendering, ensure that the opening and closing of the blunt eyeglass of left and right mesh are synchronous with the opening and closing of LED backlight and the scanning holding of LCDs, so that right and left eyes image separates right and left eyes 3D rendering when reaching the blunt mirror of 3D mesh, the 3D rendering of no crosstalk is finally synthesized in human brain.
Wherein, opening and closing signal receiving unit can receive the eyeglass opening and closing signal that the television set shown for 3D rendering is sent in the way of infrared, radio frequency or bluetooth to glasses.
Example IV
System is shown the embodiments of the invention provide a kind of 3D rendering, as shown in fig. 7, the system includes：The display device 70 shown for 3D rendering and the glasses 71 for watching 3D rendering;
The display device 70 includes：LCDs unit 701, back light unit 702, receiving unit 703 and 3D display control units 704;Wherein,
The LCDs unit 701 and back light unit 702, are divided into N with the capable equal cropping in direction
Individual area i or, as shown in Figure 1；
The receiving unit 703, for receiving 3D rendering signal；
The 3D display control units 704 include：
Liquid crystal drive subelement 7041, for driving the LCDs unit to carry out picture field Refresh Data；
Backlight drive subelement 7042, for extracting the synchronous control signal in the 3D rendering signal, corresponding backlight drive signal is produced according to the synchronizing signal；It is just blunt according to the backlight drive signal, after some region in the LCDs unit completes the refresh response to current left eye or eye image field data, backlight area in the control corresponding back light unit in some region is lighted, and the preset time scope before subsequent backlight area is lighted is closed, wherein, in the range of the preset time that any backlight area of correspondence is lighted, corresponding LCDs region is controlled to be only completed the output of the image field data of correspondence left eye or right eye；
The blunt mirror driving subelement 7043 of mesh, for producing the corresponding blunt mirror drive signal of mesh according to the synchronizing signal；The glasses 71 include：
Opening and closing signal receiving unit 710, for receiving glasses drive signal；
Open and close controlling unit 711, for according to the glasses drive signal, the whole period that the opening time of the opening and closing of the eyeglass of glasses 71 or so of the control viewing 3D rendering, the left side of glasses 71 or the right eyeglass is lighted successively for each backlight area during left eye or eye image signal output.
It should be noted that the backlight drive subelement, can be also used for：In the range of the preset time, control any row liquid crystal line in the corresponding LCDs region of corresponding backlight area to extinguish after completing the refresh response of left-eye image field data, before the refresh response that proceeds by eye image field data, and extinguish after completing the refresh response of eye image field data, before the refresh response that proceeds by left-eye image field data.By further limiting the lasting lighting time of backlight area, the image boundary gray scale that realizing removal backlight may be introduced using scanning is undergone mutation（Ghost) the defect of phenomenon.
Pass through lasting lighting time ^--g of preset backlight area so that when all in the regions of zone 1
Liquid crystal line is all completed after the refresh response to current left eye or eye image field data, then the backlight in the regions of zone 1 is opened, now, only the display images of zone 1, and other parts are black；When ensuring that liquid crystal lines all in the regions of zone 2 are all completed to being opened when front left mesh is blunt or after the refresh response of eye image field data, then by the backlight in the regions of zone 2, the like, the image for completing entire picture is shown.So as in the case where the field frequency of holding picture signal is constant, it is ensured that be not in the phenomenon of left-and right-eye images crosstalk in each viewing area in each visible display of liquid crystal.
The back light unit uses LED/light source, including enhanced LED/light source.
The timing control signal that the lasting lighting time signal of the backlight area can send backlight by FPGA chips is completed, and controls it to light or close the LED/light source output drive signal of each backlight area by the chip.
In addition, the mode for sending above-mentioned eyeglass opening and closing signal to glasses includes：The mode of infrared, radio frequency or bluetooth.
The 120Hz LCDs application embodiment of the present invention, can realize the same 3D display effects of same 240Hz LCDs.Meanwhile, coordinating the embodiment of the present invention also to can reach using 240Hz LCDs or the panel of other scan frequencies improves the effect of 3D display effects.It can be seen that, either the 3D of 120Hz LCDs is realized, still the 3D performance improvements of the LCDs of higher display frequency, and the present invention has good compatibility.For system and device embodiment, because it essentially corresponds to embodiment of the method, so describing that cylinder list must be compared, the relevent part can refer to the partial explaination of embodiments of method.System embodiment described above is only schematical, the wherein described module illustrated as separating component can be or may not be physically separate, the part shown as module can be or may not be physical module, a place can be located at, or can also be distributed on multiple mixed-media network modules mixed-medias.Some or all of module therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.Those of ordinary skill in the art are without creative efforts, you can to understand and implement.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.A variety of modifications to these embodiments be will be apparent for those skilled in the art, and generic principles defined herein can in other embodiments be realized in the case where not departing from the spirit or scope of the embodiment of the present invention.Therefore, the embodiment of the present invention is not intended to be limited to the embodiments shown herein, and is to fit to the most wide scope consistent with features of novelty with principles disclosed herein.
Claims (10)
- Claim1st, a kind of 3D rendering display methods, it is characterised in that methods described includes：The synchronous control signal in 3D rendering signal is extracted, and produces corresponding backlight drive signal；According to the backlight drive signal, after the refresh response to current left eye or eye image field data is completed in LCDs with one or more of N number of region of the capable equal cropping in direction point region, the corresponding backlight area in one or more of regions is controlled to light, and the preset time scope before subsequent backlight area is lighted is closed；Wherein, in the range of the preset time that any backlight area of correspondence is lighted, corresponding LCDs region is controlled to be only completed the output of the image field data of correspondence left eye or right eye.2nd, 3D rendering display methods according to claim 1, it is characterised in that methods described also includes：Corresponding glasses drive signal is produced according to the synchronizing signal；According to the glasses drive signal, the opening and closing of blunt mirror of mesh of the control viewing 3D rendering or so eyeglass, the whole period that the opening time of the glasses left side or the right eyeglass is lighted successively for each backlight area during left eye or eye image signal output.3rd, 3D rendering display methods according to claim 1 or 2, it is characterised in that methods described also includes：In the range of the preset time, control any row liquid crystal line in the corresponding LCDs region of corresponding backlight area to extinguish after completing the refresh response of left-eye image field data, before the refresh response that proceeds by eye image field data, and extinguish after completing the refresh response of eye image field data, before the refresh response that proceeds by left-eye image field data.4th, a kind of television set shown for 3D images, it is characterised in that the television set includes：LCDs unit, back light unit, receiving unit and 3D display control units；Wherein,The LCDs unit and back light unit, are divided into N number of region with the capable equal cropping in direction； The receiving unit, for receiving 3D rendering signal；The 3D display control units include：Liquid crystal drive subelement, for driving the LCDs unit to carry out picture field Refresh Data；Backlight drive subelement, it is just blunt to produce corresponding backlight drive signal according to the synchronizing signal for extracting the synchronous control signal in the 3D rendering signal；It is just blunt according to the backlight drive signal, after some region in the LCDs unit completes the refresh response to current left eye or eye image field data, backlight area in the control corresponding back light unit in some region is lighted, and the preset time scope before subsequent backlight area is lighted is closed, wherein, in the range of the preset time that any backlight area of correspondence is lighted, corresponding LCDs region is controlled to be only completed the output of the image field data of correspondence left eye or right eye.5th, the television set that 3D rendering according to claim 4 is shown, it is characterised in that the backlight drive subelement, is additionally operable to：In the range of the preset time, control any row liquid crystal line in the corresponding LCDs region of corresponding backlight area to extinguish after completing the refresh response of left-eye image field data, before the refresh response that proceeds by eye image field data, and extinguish after completing the refresh response of eye image field data, before the refresh response that proceeds by left-eye image field data.6th, the television set that the 3D rendering according to claim 4 or 5 is shown, it is characterised in that the 3D display control units, in addition to：The blunt mirror driving subelement of mesh, for producing the corresponding blunt mirror drive signal of mesh according to the synchronizing signal；According to the glasses drive signal, the whole period that the opening time of the opening and closing of the blunt mirror of mesh of the control viewing 3D rendering or so eyeglass, the glasses left side or the right eyeglass is lighted successively for each backlight area during left eye or eye image signal output.7th, the television set that 3D rendering according to claim 6 is shown, it is characterised in that the back light unit uses LED/light source. 8th, a kind of blunt mirror of mesh for being used to watch 3D rendering, it is characterised in that the glasses include：Opening and closing signal receiving unit, for receiving glasses drive signal；Open and close controlling unit, for according to the glasses drive signal, the opening and closing of the glasses of the control viewing 3D rendering or so eyeglass, the whole period that the opening time of the glasses left side or the right eyeglass is lighted successively for each backlight area during left eye or eye image signal output, wherein, within the period that any backlight area of correspondence is lighted, corresponding LCDs region is controlled to be only completed the output of the image field data of correspondence left eye or right eye.9th, the mesh blunt mirror according to claim 7 for being used to watch 3D rendering, it is characterized in that, within the period that any backlight area is lighted, any row liquid crystal line in the corresponding corresponding LCDs region of backlight area extinguishes after completing the refresh response of left-eye image field data, before the refresh response that proceeds by eye image field data, and extinguishes after completing the refresh response of eye image field data, before the refresh response that proceeds by left-eye image field data.10th, a kind of 3D rendering shows system, it is characterised in that the system includes：The display device shown for 3D rendering and the glasses for watching 3D rendering；The display device includes：LCDs unit, back light unit, receiving unit and 3D display control units；Wherein,The LCDs unit and back light unit, are evenly dividing as N number of region with capable direction；The receiving unit, for receiving 3D rendering signal；The 3D display control units include：Liquid crystal drive subelement, for driving the LCDs unit to carry out picture field Refresh Data；Backlight drive subelement, it is just blunt to produce corresponding backlight drive signal according to the synchronizing signal for extracting the synchronous control signal in the 3D rendering signal；It is just blunt according to the backlight drive signal, when the liquid crystal After some region in display screen unit is completed to the refresh response of current left eye or eye image field data, backlight area in the control corresponding back light unit in some region is lighted, and the preset time scope before subsequent backlight area is lighted is closed, wherein, in the range of the preset time that any backlight area of correspondence is lighted, corresponding LCDs region is controlled to be only completed the output of the image field data of correspondence left eye or right eye；The blunt mirror driving subelement of mesh, corresponding glasses drive signal is produced for just blunt according to the synchronizing signal；The glasses include：Opening and closing signal receiving unit, for receiving glasses drive signal；Open and close controlling unit, for according to the glasses drive signal, the whole period that the opening time of the opening and closing of the glasses of the control viewing 3D rendering or so eyeglass, the glasses left side or the right eyeglass is lighted successively for each backlight area during left eye or eye image signal output.11st, 3D rendering according to claim 10 shows system, it is characterised in that the backlight drive subelement, is additionally operable to：In the range of the preset time, control any row liquid crystal line in the corresponding LCDs region of corresponding backlight area to extinguish after completing the refresh response of left-eye image field data, before the refresh response that proceeds by eye image field data, and extinguish after completing the refresh response of eye image field data, before the refresh response that proceeds by left-eye image field data.
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| PCT/CN2010/076702 WO2012031387A1 (en) | 2010-09-08 | 2010-09-08 | Three dimensional image displaying method, system, three dimensional television and glasses |
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| WO2012031387A1 (en) | 2012-03-15 |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee after: Hisense Visual Technology Co., Ltd. Address before: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |