CN103179425A - Three-dimensional (3D) image display method and 3D liquid crystal television - Google Patents
Three-dimensional (3D) image display method and 3D liquid crystal television Download PDFInfo
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- CN103179425A CN103179425A CN2013101014098A CN201310101409A CN103179425A CN 103179425 A CN103179425 A CN 103179425A CN 2013101014098 A CN2013101014098 A CN 2013101014098A CN 201310101409 A CN201310101409 A CN 201310101409A CN 103179425 A CN103179425 A CN 103179425A
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Abstract
The invention relates to a three-dimensional (3D) image display method which comprises the following steps of: extracting a field synchronous signal or a column synchronous signal in a 3D image signal, and producing a 3D glasses control signal; opening a left eyeglass or a right eyeglass of a pair of 3D glasses at a preset moment of the current field of a liquid crystal display screen, and closing the right eyeglass or the left eyeglass; at a preset moment of the subsequent field, closing the left eyeglass or the right eyeglass of a pair of 3D glasses, and opening the right eyeglass or the left eyeglass; within a time period of opening the left eyeglass, turning off the backlight of an image row of a right eye; within a time period of opening the right eyeglass, turning off the backlight of an image row of a left eye; and dynamically updating turn-on and turn-off of the backlight along with the images of the left eye or the images of the right eye. By the method, the problem of interference of the images of the left eye and the right eye in a 3D image display process can be solved; the display brightness and a display effect of a 3D image can be obviously improved; furthermore, the technical requirement on a liquid crystal display screen module is also reduced; and the cost of the whole machine is reduced.
Description
Technical field
The present invention relates to display packing and the 3D LCD TV of 3D rendering.
Background technology
The 3D of LCD TV shows that basic principle is the processing by circuit, and the two width images that will have parallax are passed to respectively people's left eye and right eye without interfering with each other, form stereo perception under corticocerebral synthesis.
At present, the 3D Display Technique can be divided into spectacle and the large class of bore hole formula two, and wherein spectacle 3D technology can be divided into aberration formula, polarization type and active-shutter again.
Wherein the cardinal principle of active-shutter 3D technology is that the 3D video image is divided into two frame by frame, form two pictures of corresponding left eye and right eye, by the cooperation of shutter type 3 D spectacles, make this two a series of paintings face enter respectively left eye and right eye, finally synthetic 3D stereopsis in brain.The advantage of active-shutter 3D technology is to realize full HD 3D effect, and difficult point is that image frame shows and the coupling of glasses folding, needs in practical application image frame and 3D glasses are carried out Synchronization Control.
For LCDs, when the image display signal scanning of LCDs can not be carried out Synchronization Control with the switching of 3D glasses, the 3D display performance can be affected, the problems such as the crosstalking of left-and right-eye images, the reduction of 3D rendering display brightness may be occurred, good 3D display effect can't be reached.Each two field picture that liquid crystal display module shows is comprised of several rows, and with behavior unit's refreshed image data.The light transmission of liquid crystal display module namely after the capable view data of x refreshes, can be kept this light transmission, until there is new view data to refresh according to maintenance is arranged.Therefore liquid crystal display module is during showing every two field picture, and most of the time right and left eyes image is mixed in together, if do not take technical measures, will cause the interference of right and left eyes image intersection.
In the demonstration control mode of traditional shutter 3D TV is liquid crystal display module during certain two field picture shows, after all row or local continuous several rows are completed view data and are refreshed, all light all or local backlight in stable predetermined amount of time in all row view data, close simultaneously the backlight of other positions.Although the method can realize the separation of 3D video right and left eyes image, but be subject to the impact of brightness phase mutual interference between refresh rate, backlight module each zone of LCDs, image brightness when causing the 3D state descends a lot than the brightness under 2D state, and the 3D rendering intersection disturbs the control effect also undesirable.
Summary of the invention
The invention provides a kind of display packing and 3D LCD TV of 3D rendering, crosstalk to eliminate the left eye image of 3D LCDs procedure for displaying, and improve the 3D rendering display brightness, improve the 3D display effect.
The display packing of 3D rendering of the present invention comprises:
Extract field sync signal or line synchronizing signal in the 3D rendering signal, and produce 3D glasses left and right eyeglass the folding signal and backlight bright/cyclic control signal that goes out;
According to described field sync signal or line synchronizing signal, the first row scanning zero hour and last column end of scan presetting constantly in interval constantly when the front court of LCDs, open left eyeglass lens or the right eye eyeglass of 3D glasses; Another within this interval presets constantly or same presetting constantly, closes right eye eyeglass or left eyeglass lens;
Constantly scan presetting constantly in interval constantly with last column in the first row scanning with back court, close left eyeglass lens or the right eye eyeglass of 3D glasses, another within this interval presets constantly or same presetting constantly, unlatching right eye eyeglass or left eyeglass lens;
Within the time period that left eyeglass lens is opened, extinguish LCDs and show the backlight of left eye image data renewal zone and eye image row, light the backlight of all the other positions; Within the time period that the right eye eyeglass is opened, extinguish LCDs and show the backlight of eye image Data Update zone and left-eye image row, light the backlight of all the other positions; And backlight lights or extinguishes along with left-eye image or eye image are done dynamic renewal.
Method of the present invention is the view data regeneration characteristics according to LCDs, at first determine the images of left and right eyes open and close time of 3D glasses, then according to the view data update mode of the open and close state of glasses and LCDs determine backlight module each zone bright, state goes out, can take full advantage of backlight lighting the time like this, thereby improved the image brightness when showing the 3D state, and make the right and left eyes separation of images more thorough, reduced the 3D rendering intersection and disturbed.
Further, in order to reduce light backlight on extinguishing the impact of backlight area, the backlight area of extinguishing comprises when LCDs every delegation view data is upgraded, and this row closes on capable backlight.The described row that closes on has comprised near the several rows of newline.
Further, in order to keep the brightness uniformity of image, within a scan period, the brightness when adjusting each backlight area and lighting makes each backlight area time of lighting within cycle separately mutually equate with its product of lighting brightness.That is to say, when keeping each backlight area to light brightness the same, increase fall time of other backlight area; Perhaps keep the fall time of each backlight area constant, the brightness when increasing other backlight area and lighting.
Preferably, total demonstration line number of LCDs is n, and described presetting is the moment that the capable view data of LCDs n/2 is upgraded end constantly.
The present invention also provides a kind of 3D LCD TV of using said method, has the backlight module that is connected with power transfer module in structure, be provided with liquid crystal display module on the logical direction of the light of backlight module, described liquid crystal display module receives control module by image to carry out signal with the 3D glasses and is connected.
Wherein power transfer module is converted to the required power supply of each module of television set with external power source, receives simultaneously backlight bright, the control signal of going out from described image reception and control module, and controls the light on and off of backlight module each several part.
Image receives control module and is used for receiving the 3D rendering signal, according to the field sync signal in the 3D signal or line synchronizing signal, produces bright, the control signal of going out backlight and the left and right eyeglass folding of 3D glasses signal.Wherein bright, the control signal of going out backlight is controlled each zone light on and off backlight in backlight module by described power transfer module; The folding of the left and right eyeglass folding of 3D glasses signal controlling shutter type 3 D spectacles images of left and right eyes eyeglass.
Liquid crystal display module receives from image and receives and the 3D rendering data of control module output, according to preset, the sequential of going completes that in described LCDs, each pixel display data refreshes.The data that refresh have determined that each pixel sees through the brightness that backlight module sends.
Backlight module provides backlight for described liquid crystal display module.Backlight module is divided into some zones with the liquid crystal display screen line display direction, and backlight bright, the control signal of going out that are received the control module generation by image are controlled each regional light on and off of backlight module by power transfer module.Within the time period that left eyeglass lens is opened, extinguish LCDs and show the backlight of eye image, light the backlight of all the other positions; Within the time period that the right eye eyeglass is opened, extinguish LCDs and show the backlight of left-eye image, light the backlight of all the other positions.
The 3D glasses are to complete the closure or openness of left and right eyeglass according to the left and right eyeglass folding of the 3D glasses signal that image reception control module produces.The light that when wherein eyeglass is opened, liquid crystal display module sees through can pass eyeglass, and the light that when eyeglass is closed, liquid crystal display module sees through can not pass eyeglass.
Concrete, described 3D glasses are shutter type 3 D spectacles.
The display packing of 3D rendering of the present invention and 3D LCD TV, can eliminate the right and left eyes picture crosstalk problem that occurs in the 3D rendering procedure for displaying, display brightness and the display effect of 3D rendering have obviously been improved, also reduce simultaneously the specification requirement of liquid crystal display module, thereby reduced the cost of complete machine.
Below in conjunction with the embodiment of embodiment, foregoing of the present invention is described in further detail again.But this should be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following example.Do not breaking away from the above-mentioned technological thought situation of the present invention, various replacements or change according to ordinary skill knowledge and customary means are made all should comprise within the scope of the invention.
Description of drawings
Fig. 1 is the structured flowchart of 3D LCD TV of the present invention.
Fig. 2 is the flow chart of the display packing of 3D rendering of the present invention.
Fig. 3 is capable field sync signal and the 3D glasses synchronous signal Relations Among schematic diagram of liquid crystal display module in Fig. 2 method.
Fig. 4 is that in Fig. 2 method, view data refreshes schematic diagram with each regional light on and off relation backlight.
Fig. 5 is the schematic diagram backlight that extinguishes the adjacent domain that has a significant effect in Fig. 2 method.
Fig. 6 is that right and left eyes eyeglass folding in Fig. 2 method, right and left eyes view data and each regional light on and off backlight concern schematic diagram.
Embodiment
3D LCD TV of the present invention as shown in Figure 1, have with power transfer module and be connected backlight module, be provided with liquid crystal display module on the logical direction of the light of backlight module, described liquid crystal display module receives control module by image to carry out signal with shutter type 3 D spectacles and is connected.
Expressed method of the present invention in Fig. 2, receive control module by the image in Fig. 1 and receive the 3D rendering signal, and produce 3D glasses left and right eyeglass the folding signal and backlight bright/cyclic control signal that goes out, the 3D rendering data after processing according to predetermined mode are sent to LCD MODULE.
LCD MODULE refreshes the view data of images of left and right eyes in turn with above-mentioned 3D rendering data as unit take the field, the line synchronizing signal during simultaneously with LCD MODULE refreshed image data or field sync signal are sent to image and receive control module.
Image receives control module the line synchronizing signal or the field sync signal that receive is exported 3D glasses folding signal according to predetermined mode.As shown in Figure 3, in the first row when the front court scans the interval in the zero hour and last column end of scan moment, image receives control module and is receiving or calculating liquid crystal display module and open the left eyeglass lens of 3D glasses when upgrading the capable view data of left eye m, closing the right eye eyeglass, until close left eyeglass lens when beginning to upgrade the capable view data of right eye m in back court, open the right eye eyeglass.Wherein m is the capable view data of n/2 picturedeep corresponding to the renewal finish time of the total line number n of LCDs.
Image receives control module and also will export backlight control signal according to predetermined mode after the line synchronizing signal that receive or field sync signal.Mode is for as shown in Figure 4: image receives control module receiving or calculate liquid crystal display module when upgrading the capable view data of x, extinguishes the backlight of the capable region of x and adjacent area thereof.The backlight area of extinguishing need satisfy: the adjacent domain that the one's own profession backlight illumination is had a significant effect as shown in Figure 5 backlight.When Fig. 6 has expressed the left eyeglass lens unlatching, demonstration eye image place line position is backlight, and when the right eye eyeglass is opened, demonstration left-eye image place line position is backlight.
Brightness when adjusting each backlight area and light by the backlight drive circuit of adjusting power transfer module simultaneously makes each backlight area time of lighting within cycle separately equate with its product of lighting brightness.Namely receive the backlight control signal of control module output by adjusting image, extend the fall time of shorter backlight area of each zone middle fall time backlight, make each backlight area time of lighting within cycle separately equate with its product of lighting brightness.Backlight lights or extinguishes along with left-eye image or eye image are done dynamic renewal.
Mode of the present invention according to the view data of LCDs refresh characteristics, at first determine the images of left and right eyes open and close time of 3D glasses, then according to the view data Flushing status of the open and close state of glasses and LCDs determine backlight module each zone bright, state goes out, can take full advantage of backlight lighting the time like this, thereby improved the image brightness when showing the 3D state, and make the right and left eyes separation of images more thorough, reduced the 3D rendering intersection and disturbed.
Claims (6)
1.3D the display packing of image, its feature comprises:
Extract field sync signal or line synchronizing signal in the 3D rendering signal, and produce 3D glasses left and right eyeglass the folding signal and backlight bright/cyclic control signal that goes out;
According to described field sync signal or line synchronizing signal, the first row scanning zero hour and last column end of scan presetting constantly in interval constantly when the front court of LCDs, open left eyeglass lens or the right eye eyeglass of 3D glasses; Another within this interval presets constantly or same presetting constantly, closes right eye eyeglass or left eyeglass lens;
Constantly scan presetting constantly in interval constantly with last column in the first row scanning with back court, close left eyeglass lens or the right eye eyeglass of 3D glasses, another within this interval presets constantly or same presetting constantly, unlatching right eye eyeglass or left eyeglass lens;
Within the time period that left eyeglass lens is opened, extinguish LCDs and show the backlight of left eye image data renewal zone and eye image row, light the backlight of all the other positions; Within the time period that the right eye eyeglass is opened, extinguish LCDs and show the backlight of eye image Data Update zone and left-eye image row, light the backlight of all the other positions; And backlight lights or extinguishes along with left-eye image or eye image are done dynamic renewal.
2. the display packing of 3D rendering as claimed in claim 1 is characterized by: the backlight area of extinguishing comprises when LCDs every delegation view data is upgraded, and this row closes on capable backlight.
3. the display packing of 3D rendering as claimed in claim 1 is characterized by: within a scan period, the brightness when adjusting each backlight area and lighting makes each backlight area time of lighting within cycle separately mutually equate with its product of lighting brightness.
4. as the display packing of the described 3D rendering of one of claims 1 to 3, it is characterized by: total demonstration line number of LCDs is n, and described presetting is the moment that the capable view data of LCDs n/2 is upgraded end constantly.
5. right to use requires the 3D LCD TV of 1 described method, it is characterized by: have the backlight module that is connected with power transfer module, be provided with liquid crystal display module on the logical direction of the light of backlight module, described liquid crystal display module receives control module by image to carry out signal with the 3D glasses and is connected.
6. right to use requires the 3D LCD TV of 5 described methods, and it is characterized by: described 3D glasses are shutter type 3 D spectacles.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310101409.8A CN103179425B (en) | 2013-03-27 | 2013-03-27 | Three-dimensional (3D) image display method and 3D liquid crystal television |
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| CN201310101409.8A CN103179425B (en) | 2013-03-27 | 2013-03-27 | Three-dimensional (3D) image display method and 3D liquid crystal television |
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| CN103179425B CN103179425B (en) | 2015-06-17 |
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Cited By (3)
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| CN103531163A (en) * | 2013-08-20 | 2014-01-22 | 明基电通有限公司 | Display method and display device |
| TWI508050B (en) * | 2013-08-15 | 2015-11-11 | Benq Corp | Displaying method and displaying apparatus |
| WO2024125513A1 (en) * | 2022-12-16 | 2024-06-20 | 华为技术有限公司 | Display method and related apparatus |
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