CN105744251A - Shutter type LED three-dimensional display control system - Google Patents
Shutter type LED three-dimensional display control system Download PDFInfo
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- CN105744251A CN105744251A CN201410758717.2A CN201410758717A CN105744251A CN 105744251 A CN105744251 A CN 105744251A CN 201410758717 A CN201410758717 A CN 201410758717A CN 105744251 A CN105744251 A CN 105744251A
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Abstract
Disclosed is a shutter type LED three-dimensional display control system. Emission of synchronous signals is realized by displaying light emitted by a wafer in an LED display screen, and shutter type three-dimensional glasses matching the LED display screen senses the synchronous signals emitted by the wafer in the LED display screen through a photosensitive device, such that synchronization between images displayed by the LED display screen and the shutter type three-dimensional glasses can be realized.
Description
Technical field
The invention belongs to technical field of LED display, relate to a kind of shutter LED three dimensional display and control system, the novel shutter three-dimensional LED particularly relating to a kind of low frame rate controls system.
Background technology
In recent years, along with the market hot broadcast to 3 D stereoscopic image, three-dimensional stereo display device shows stereo-picture by using glasses method or non-glasses method.The coloured differential 3 D displaying method of glasses method, shutter 3 D displaying method, polarization type 3 D displaying method.In aberration 3 D displaying method, by adopting complementary color color picture material to be shown on display module, picture is carried out eyes and sees by wearing optical color filter simultaneously and look by beholder, synthesizes three-dimensional image thereby through human brain.Polarization type 3 D displaying method is the characteristic by light with direction of vibration, polariser is utilized to filter originally towards the light of different directions vibration, the light inconsistent with polariser direction can be blocked, the light that transference polariser direction is identical is by thus producing parallax, beholder is by wearing the Special spectacles with polarized lenses, this two a series of paintings face is respectively mapped to left eye and right eye, synthesizes three-dimensional image thereby through human brain.In shutter 3D display packing, by improving the refresh rate of display module, image is divided into two by frame, forming two a series of paintings faces that images of left and right eyes is staggered continuously, beholder makes this two a series of paintings face respectively enter right and left eyes by wearing shutter 3D glasses, synthesizes three-dimensional image thereby through human brain.In non-glasses method, disparity barrier or lenticular lens that the optical axis of visual disparity image is separated by use optical sheet realize stereo-picture.
In the above-mentioned 3 D stereoscopic image mode implemented by eyes method mentioned, color formula 3 D displaying method is with low cost but that present 3-dimensional image effect is worst, has the phenomenon of colour cast, therefore cannot see real colors of image.Polarization type 3 D displaying method needs to install polarising means additional before display pixel, owing to the physical size of LED display is general very big, make to install additional that technology difficulty is big, cost is high, later maintenance is difficult, and in the three-dimensional mode, human eye sees the resolution meeting drop by half of image, thus causing that viewing has granular sensation phenomenon.Shutter 3 D displaying method can solve the problem of color formula 3 D displaying method and polarization type 3 D displaying method, thus realizing the 3-D effect of high-quality, is currently mainly applied in scialyscope and LCD field.
Shutter three dimensional display principle can also be applied in LED stereo display equally.But display screen control system is had significantly high requirement by the method, it is mainly reflected in synchronization mechanism requirement extremely strict, picture frame frequency refresh rate is at least wanted more than 100hz, is generally adopted 120hz.It is difficult to reach these requirements with existing LED display control system, so, current shutter 3 D displaying method is not yet applied on LED display.
In shutter 3 D displaying method, owing to frame frequency refresh rate is too fast after LED display has shown a two field picture, so the electricity of residual cannot release within field blackout period in circuit, therefore LED display is after having shown that a two field picture enters next frame image, LED display also has the ghost of previous frame image, if shutter LED Three-dimensional Control System not doing any improvement process, the ghost of right eye frame R image is so can be appreciated that when shutter 3D glasses opens left eyeglass lens, the ghost of left-eye frame L image is can be appreciated that when opening right eye eyeglass, hence in so that the 3D image that beholder watches has ghost image, the problems such as stereoeffect is inconspicuous.
In shutter LED Three-dimensional Control System, master control system transmission three-dimensional image is to back end processing module, and the three-dimensional synchronizing signal of transmission simultaneously gives three-dimensional synchronous transmitter.Three-dimensional synchronous transmitter launches glasses synchronous signal, shutter 3D glasses receives glasses synchronous signal rear drive glasses left and right eyeglass alternation switch, see LED display display left-eye frame L image when both having opened left eyeglass lens, when opening right eye eyeglass, see LED display display right eye frame R image.But in practice, owing to the time of back end processing module process image is long, therefore have image that LED display shows and switch nonsynchronous phenomenon with the eyeglass of shutter 3D glasses, both the image of left-eye frame L and right eye frame R can be simultaneously viewed when shutter 3D glasses holds left eyeglass lens, the image of right eye frame R and left-eye frame L can be simultaneously viewed when holding right eye eyeglass, according to three-dimensional imaging principle, can cause that the 3D image that beholder watches has the problems such as ghost image.
Summary of the invention
The present invention will provide for the Novel shutter formula LED Three-dimensional Control System of a whole set of low frame rate solving the problems referred to above.
One aspect of the present invention provides a kind of shutter LED Three-dimensional Control System with DSTLink technology, and DSTLink technology is a kind of novel synchronizing signal emission system, also provides for the method for designing of the shutter 3D glasses arranged in pairs or groups mutually with DSTLink technology simultaneously.
DSTLink technology utilizes just a kind of electromagnetic characteristic, show that the light that wafer sends realizes the transmitting of synchronizing signal by adopting in LED display, the shutter 3D glasses arranged in pairs or groups with it induces the synchronizing signal showing in LED display that wafer is launched by light sensitive device, thus what realize between image and the shutter 3D glasses that LED display shows is synchronization.
The shutter LED Three-dimensional Control System of the present invention includes: master control system, transmitter, receptor, shutter 3D glasses.
It is 100Hz that the master control system of the present invention exports maximum frame rate in the three-dimensional mode, and the output effective resolution of maximum image is 4096 × 2160, and output maximum image resolution is 4400 × 2250.Maximum output clock frequency is 4400 × 2250 × 100=990Mhz.Owing to maximum frame rate is 100Hz, the display time that therefore every two field picture is the shortest is 1/100=10ms, and both having exported maximum line frequency is 2250 × 100=225000hz.
It is 50Hz that the master control system of the present invention exports minimum frame frequency in the three-dimensional mode, and the output effective resolution of minimum image is 800 × 600, and output minimum image resolution is 1024 × 624.Minimum output clock frequency is 1024 × 624 × 50=31.95Mhz.Owing to minimum frame frequency is 50Hz, the display time that therefore every two field picture is the longest is 1/50=20ms, and both having exported minimum line frequency is 624 × 50=31200hz.
Image can be carried out cutting transmission by the master control system of the present invention, according to clock frequency=horizontal direction total pixel × frame frequency of total pixel × vertical direction, can be seen that if image is carried out cutting transmission by master control system, so the clock frequency of cutting Hou Mei road transmission is necessarily low than the clock frequency of a road transmission, therefore master control system can reduce the clock frequency of transmission by image carries out cutting transmission, thus the radiation value reducing EMI also increases the stability being connected transmission with transmitter simultaneously.If the clock frequency of image is more than 148.5Mhz, then master control system may choose whether image is cut when output.If the clock frequency of image is more than 594Mhz, then master control system is being transmitted after image is cut.Master control system is maximum can be cut into 16 image-regions and be divided into 16 tunnels and be transmitted image, minimum image can cut into 2 image-regions and be divided into 2 tunnels and be transmitted.
Adopt as follows with the Novel shutter formula LED Three-dimensional Control System image processing flow of DSTLink technology:
The two dimensional image received or 3-D view are resolved to the frame frequency frequency left-eye frame L image less than or equal to 100Hz and the frame frequency frequency right eye frame R image less than or equal to 100Hz by master control system.And left-eye frame L image and right eye frame R image are transferred to transmitter in an alternating fashion, send the three-dimensional synchronizing signal of PWM waveform to transmitter simultaneously.According to different data volumes, after the view data sent can be cut by master control system, packing distributes to one or more transmitters.
Transmitter includes: RX module, TX module, synchronizing signal modular converter.The described first input end of RX module is connected with the image signal output end of master control system, and the second input of RX module is connected with the three-dimensional synchronous signal output end of master control system.Transmitter receives the three-dimensional image of master control system transmission and three-dimensional synchronizing signal, the three-dimensional synchronizing signal of input is carried out form conversion by synchronizing signal modular converter, the RX module of the transmitter 3-D view to receiving is delivered to TX module after carrying out form conversion and is processed, the TX module data to receiving carry out cutting process, and the three-dimensional synchronizing signal packing after then the image handled well being changed with form distributes to one or more receptors.
Receptor includes: receiving processing module, transport module, synchronizing signal processing module.Described receiving processing module input is connected with the outfan of the TX module in transmitter, and the outfan of transport module is connected with the driving IC in LED display.The picture signal of receptor receiver transmitter transmission and synchronizing signal, the receiving processing module decoding data to receiving, give synchronizing signal processing module the synchronizing signal decoded to be encoded, transport module is given the picture signal decoded, transport module at the driving IC data decoded being transferred to by transport module in LED display, is transferred to the synchronically controlling information encoded the driving IC in LED display in the display cycle within field blackout period by transport module.
In above-mentioned, master control system is all the three-dimensional synchronizing signal of output PWM waveform, and the three-dimensional synchronizing signal of master control system transmission simultaneously can adopt Dotmark mode to transmitter.
Dotmark mode refers to that master control system is inserted into three-dimensional synchronizing signal in every frame image signal, both in every two field picture, the rgb value of certain pixel was synchronizing information, that is the image that will export is encoded by master control system, change the rgb value of certain pixel in image so that it is become synchronizing information flag bit.Master control system can select any pixel in transmission image to do synchronizing information flag bit.
Such as: the image that will export is encoded by master control system, change the rgb value of first pixel in the image upper left corner, if the image of master control system transmission is left-eye frame L, then the rgb value of first pixel in the image upper left corner is encoded to R=0, G=0, B=0.If the image of master control system transmission is right eye frame R, then the rgb value of first pixel in the image upper left corner is encoded to R=255, G=255, B=255.The 3-D view that master control system is transmitted by transmitter extracts the position at synchronizing information place and is decoded after carrying out Data Format Transform, thus obtaining synchronous signal information.If therefore master control system adopts Dotmark mode to transmit three-dimensional synchronizing signal, avoiding the need for additionally increasing transmission line and be transmitted three-dimensional synchronizing signal, thus reducing the change of transmitter hardware, saving the cost of system.
The implementation of DSTLink simultaneous techniques is as follows:
DSTLink simultaneous techniques be the light adopting the display wafer in LED display to send to do synchronizing signal, both produced lock-out pulse by controlling the time of the display bright dark alternate of wafer in LED display.But the penetration power that the light that display wafer sends when showing different images possesses is discrepant, the receiving range of the more strong shutter 3D glasses arranged in pairs or groups with it of light penetration power that display wafer sends is more remote, the receiving range of the more weak shutter 3D glasses arranged in pairs or groups with it of light penetration power that display wafer sends is more near, therefore appropriate synchronization pattern must be selected in DSTLink simultaneous techniques to show by the display wafer in its LED display, its light sent is made to possess very strong penetration power, thus improving the receiving range of the shutter 3D glasses arranged in pairs or groups with it.Therefore synchronization pattern is generally adopted complete white pattern, the pattern that the black and white of lineament replaces can certainly be adopted, from measured data, no matter synchronization pattern adopts the pattern of what form, display wafer launch the light of synchronizing signal should select be monochromatic light and preferably white light be the best.
DSTLink technology can be realized by following manner:
Embodiment: the synchronizing signal receiving transmitter transmission is encoded processing by receptor, encode out Synchronization Control sequential, in the receptor field blackout period after transferring a two field picture, open self-built synchronization pattern in receptor, receiving when field blackout period effectively, display output is invalid.By the Synchronization Control sequential transmission synchronization pattern encoded out to the driving IC in LED display, IC is driven to drive the display wafer in LED display to show synchronization pattern.The time shown due to synchronous images is very short and in microsecond rank, and therefore beholder is not felt by the bright dark change of LED display.
As follows with the shutter 3D glasses implementation that DSTLink simultaneous techniques is arranged in pairs or groups mutually:
The shutter 3D glasses arranged in pairs or groups with it includes, photoreceptor module, amplification module, signal processing module.Described photoreceptor module adopts sensor devices to induce the light of frame synchronizing signal show in LED display that wafer launches, say, that the change showing the sent light of wafer in LED display is converted to voltage signal magnitude by photoreceptors and changes.Photoreceptors can adopt photodiode, and the wavelength photoreceptor of selection photoelectric diode is at least in the scope of 400nm～800nm.The smaller ability hundreds of millivolt of voltage signal amplitude owing to being converted by photoreceptors, therefore needs to be amplified processing to the voltage number converted to by amplification module.Again through signal processing module, the synchronizing signal form after amplifying is converted to the control signal that can control left eyeglass lens with right eye eyeglass switch, thus driving eyeglass alternation switch.In the shutter 3D glasses arranged in pairs or groups with it, left eyeglass lens with the switching sequence of right eye eyeglass is: open left eyeglass lens during LED display display left-eye frame L image, opens right eye eyeglass during LED display display right eye frame R image.
The switch time of the shutter 3D glasses right and left eyes eyeglass arranged in pairs or groups mutually with DSTLink simultaneous techniques provides as follows: set time of LED display display left-eye frame L image as X microsecond, and it is A microsecond that shutter 3D glasses opens the time of left eyeglass lens.Then A meets " (X × 0.2)≤A≤X ", has both hidden black in the time of remaining (X-A) microsecond for closing left and right eyeglass.If the time of LED display display right eye frame R image is Y microsecond, it is B microsecond that shutter 3D glasses opens the time of right eye eyeglass.Then B meets " (Y × 0.2)≤B≤Y ", has both hidden black in the time of remaining (Y-B) microsecond for closing left and right eyeglass.
The time opening left eyeglass lens when simultaneously present invention further provide that LED display display left-eye frame L image and the time closing left and right eyeglass can be noncontinuity, such as: during LED display display left-eye frame L image, shutter 3D glasses is first closed left and right eyeglass and is then opened left eyeglass lens followed by closing the multiple combination patterns such as right and left eyes eyeglass, which kind of no matter adopts combine, opens left eyeglass lens time sum with closing right and left eyes eyeglass time sum and must be fulfilled for the time range of above-mentioned defined.The time opening right eye eyeglass during LED display display right eye frame R image and the time closing left and right eyeglass can be noncontinuity, such as: during LED display display right eye frame R image, shutter 3D glasses is first closed left and right eyeglass and is then opened right eye eyeglass followed by closing the multiple combination patterns such as right and left eyes eyeglass, which kind of no matter adopts combine, opens right eye eyeglass time sum with closing right and left eyes eyeglass time sum and must be fulfilled for the time range of above-mentioned defined.
Therefore DSTLink technology is real-time transmission synchronizing signal, both in the field blackout period after LED display has shown a two field picture by LED display in show that the light that wafer sends realizes the transmitting of synchronizing signal.The shutter 3D glasses simultaneously arranged in pairs or groups with it receives the alternation switch controlling eyeglass after showing the synchronizing signal that wafer is launched in LED display timely, therefore almost without time difference between transmitting terminal and the shutter 3D glasses receiving terminal of synchronizing signal, both the shutter 3D glasses arranged in pairs or groups with it sees the image of LED three-dimensional display screen left-eye frame L when opening left eyeglass lens, the image of LED three-dimensional display screen right eye frame R is seen when opening right eye eyeglass, therefore image occurs misplacing thus the 3 D stereoscopic image that causes beholder the to see problem that has ghost image to adopt DSTLink technology can perfectly solve show in the switch of the above-mentioned shutter 3D glasses left and right eyeglass being previously mentioned and LED display.
In sum: adopt the shutter LED Three-dimensional Control System of DSTLink technology to meet the requirement that in shutter three dimensional display mode, synchronization mechanism is extremely strict.Adopt this control system also without the extra glasses emitter that increases to make shutter 3D glasses and the display image synchronization in LED display simultaneously, thus reducing the cost of LED three-dimensional display screen, when there will not be as employing glasses emitter, the angles of transmitter is not good causes in the problem that some angle shutter 3D glasses cannot receive synchronizing signal.Therefore DSTLink technology is the glasses simultaneous techniques of a kind of innovation, and the shutter LED Three-dimensional Control System of employing DSTLink technology is the LED Three-dimensional Control System of a kind of innovation.
Another aspect of the present invention provides the solution of the too high generation ghost of a kind of refresh rate due to LED display.Use the method LED display after having shown that a two field picture enters next frame image, LED display does not have the ghost of previous frame image.
This problem can be solved by following three mode.
Mode one: in the receptor field blackout period after transferring a two field picture, opens blank screen system self-built in receptor.Receiving when field blackout period effectively, display output is invalid, puts a pulse inside IC, does screen body without output processing.During blank screen, inside is in analog information/reception state (being called BLACK state), without output function.During BLACK state, frame synchronization test and control system send the equal normal operation of signal, in order to guarantee display/transmission Accuracy Matching.BLACK state for time can do corresponding adjustment according to different resolution, but it have to be ensured that BLACK state for time is less than time of field blackout period.
Mode two: in the receptor field blackout period after transferring a two field picture, opens black picture self-built in receptor.Receiving when field blackout period effectively, display output is invalid, transmits black picture to the driving IC in LED display, drives the display wafer in LED display to show black picture.Show that the time of black picture can do corresponding adjustment according to different resolution, but it have to be ensured that black picture display time is less than field blackout period.
Mode three: in the receptor field blackout period after transferring a two field picture, opens white picture self-built in receptor.Receiving when field blackout period effectively, display output is invalid, transmits white picture to the driving IC in LED display, drives the display wafer in LED display to show white picture.Show that the time of white picture can do corresponding adjustment according to different resolution, but it have to be ensured that white picture display time is less than field blackout period.
In sum, the Novel shutter formula LED Three-dimensional Control System of the present invention is owing to have employed technique scheme, solve that in shutter 3 D displaying method synchronization mechanism requirement is extremely strict and picture frame frequency refresh rate at least wants the difficult point of more than 100hz, also solve due to the problem of the too high generation ghost of the refresh rate of LED display simultaneously, make shutter 3 D displaying method be able to perfect realization in LED display.
Other advantages of the present invention, target and feature will be illustrated to a certain extent in the following description, and to a certain extent, will be apparent to those skilled in the art based on to investigating hereafter, or can be instructed from the practice of the present invention.The target of the present invention and other advantages can be passed through description below, claims, and structure specifically noted in accompanying drawing and realize and obtain.
Accompanying drawing explanation
Accompanying drawing is for providing a further understanding of the present invention, and constitutes a part for description, is provided commonly for explaining the present invention with embodiments of the invention, is not intended that limitation of the present invention.In the accompanying drawings:
Fig. 1 is the block schematic illustration of the Novel shutter formula LED Three-dimensional Control System describing the present invention；
Fig. 2 a-2d be describe the present invention Novel shutter formula LED Three-dimensional Control System in master control system to picture decoding schematic diagram；
Fig. 3 be describe the present invention Novel shutter formula LED Three-dimensional Control System in master control system transmission 3-D view schematic diagram；
Fig. 4 be describe the present invention Novel shutter formula LED Three-dimensional Control System in master control system transmission sequential chart；
Fig. 5 a describes master control system in the Novel shutter formula LED Three-dimensional Control System of the present invention to adopt Dotmark mode to transmit the image of left-eye frame of three-dimensional synchronizing signal；
Fig. 5 b describes master control system in the Novel shutter formula LED Three-dimensional Control System of the present invention to adopt Dotmark mode to transmit the image of right eye frame of three-dimensional synchronizing signal；
Fig. 6 is the oscillogram describing to show in LED display Synchronization Control sequential that wafer launches；
Fig. 7 describes the sequential chart that display image switchs with shutter 3D glasses left and right eyeglass；
Fig. 8 is the sequential chart describing to adopt the display image of DSTLink technology to switch with shutter 3D glasses left and right eyeglass；
Fig. 9 is the schematic diagram describing to adopt the shutter 3D glasses of DSTLink technology；
Figure 10 is the schematic diagram being depicted in inserting black picture field blackout period；
Figure 11 is depicted in insert the schematic diagram of white picture field blackout period.
Detailed description of the invention
Describing embodiments of the present invention in detail below with reference to drawings and Examples, to the present invention, how application technology means solve technical problem whereby, and the process that realizes reaching technique effect can fully understand and implement according to this.As long as it should be noted that do not constitute conflict, each embodiment in the present invention and each feature in each embodiment can be combined with each other, and the technical scheme formed is all within protection scope of the present invention.
Hereinafter, elaborate the embodiment of the example of the present invention with reference to the accompanying drawings, in the following description, be not described in detail the function and manufacture known, to avoid obscuring the present invention by unnecessary details.
Hereinafter; in order to the concordance described is simultaneously for avoiding misunderstanding; unified with resolution for 1920 × 1080; the frame frequency of Three-dimensional Control System is that 60hz carries out citing computing; should know that this shutter Three-dimensional Control System not representing the present invention is only suitable for this resolution and frame frequency; it is also feasible for adopting other resolution and frame frequency, also will belong in protection scope of the present invention.
Hereinafter, in order to the concordance described is simultaneously for avoiding misunderstanding, when LED display shows left-eye frame L image, the shutter 3D glasses of the present invention opens 50% that the time of left eyeglass lens is LED display display left-eye frame L image temporal, and another 50% time is close right and left eyes eyeglass both to have hidden the black time.When LED display shows right eye frame R image, the shutter 3D glasses of the present invention opens 50% that the time of right eye eyeglass is LED display display right eye frame R image temporal, and another 50% time is close right and left eyes eyeglass both to have hidden the black time.Should knowing that this control time not representing the shutter 3D glasses right and left eyes eyeglass of the present invention is only suitable for the time of this regulation, what adopt that other time allows for is also feasible, also will belong in protection scope of the present invention.
Hereinafter, in order to the concordance described is simultaneously for avoiding misunderstanding, the time opening left eyeglass lens during LED display display left-eye frame L image and the time closing left and right eyeglass are successional, both, during LED display display left-eye frame L image, shutter 3D glasses opens left eyeglass lens followed by closing right and left eyes eyeglass.The time opening right eye eyeglass during LED display display right eye frame R image and the time closing left and right eyeglass are successional, and both during LED display display right eye frame R image, shutter 3D glasses opens right eye eyeglass followed by closing right and left eyes eyeglass.Should knowing that this control model not representing the shutter 3D glasses right and left eyes eyeglass of the present invention is only suitable for the mode of this regulation, the control model adopting other is also feasible, also will belong in protection scope of the present invention.
In the legend of this patent; in order to more directly perceived and pure and fresh is depicted sequential chart; the three-dimensional synchronizing signal unification that master control system is sent is described in the way of PWM; should know this do not represent the shutter Three-dimensional Control System of the present invention only be suitable for carry out synchronous signal transmission by PWM; it is also feasible for adopting Dotmark mode to carry out synchronous signal transmission, also will belong in protection scope of the present invention.
Fig. 1 is the block schematic illustration of the Novel shutter formula LED Three-dimensional Control System describing the present invention.Native system includes: master control system, transmitter, receptor, DSTLink simultaneous techniques, shutter 3D glasses.
With reference to shown in Fig. 1, the Novel shutter formula LED Three-dimensional Control System handling process of the present invention is as follows:
Step one: the image received is carried out three-dimensional decoding process by master control system, both decodes: the frame frequency frequency left-eye frame L image less than or equal to 100Hz and the frame frequency frequency right eye frame R image less than or equal to 100Hz.
Step 2: the left-eye frame L image decoded and right eye frame R image are transferred to transmitter by master control system in an alternating fashion, send the three-dimensional synchronizing signal of PWM waveform to transmitter simultaneously.
Step 3: three dimensional image signals is carried out cutting process after carrying out form conversion with three-dimensional synchronizing signal by the transmitter three-dimensional image to receiving, then the three-dimensional synchronizing signal packing distribution after the image handled well and form conversion to one or more receptors.
Step 4: the picture signal of receptor receiver transmitter transmission and synchronizing signal, the receptor decoding data to receiving, decode synchronically controlling information and picture signal, the data decoded are transferred to the driving IC in LED display by transport module in the display cycle, thus driving the display wafer display three-dimensional image in LED display, the synchronically controlling information encoded is transferred to the driving IC in LED display within field blackout period by transport module, thus driving the display wafer in LED display to launch three-dimensional synchronizing signal.
Step 5: the shutter 3D glasses display wafer to receiving in LED display carries out decoding process after launching three-dimensional synchronizing signal, drives the left eyeglass lens on shutter 3D glasses and right eye eyeglass alternation switch respectively according to the result of decoding.
After above-mentioned flow processing, shutter 3D glasses sees the image of the left-eye frame L of LED three-dimensional display screen when opening left eyeglass lens, sees the image of the right eye frame R of LED three-dimensional display screen when opening right eye eyeglass, synthesizes three-dimensional image thereby through human brain.
The two dimensional image received or 3-D view are resolved to left-eye frame L image and right eye frame R image by master control system, 3-D view for SBSH form: Fig. 2 a-2d describes the master control system decoding schematic diagram to SBSH picture format, Fig. 2 a left-half is represented as master control system and receives the 3-D view of the nth frame that frame frequency is 60Hz, and it is 60Hz left-eye frame L image that Fig. 2 a right half part is represented as output frame after it is resolved by master control system.Fig. 2 b left-half is represented as master control system and receives the 3-D view of the N+1 frame that frame frequency is 60Hz, and it is 60H right eye frame R image that Fig. 2 b right half part is represented as output frame after it is resolved by master control system.Fig. 2 c left-half is represented as master control system and receives the 3-D view of the N+2 frame that frame frequency is 60Hz, and it is 60Hz left-eye frame L image that Fig. 2 c right half part is represented as output frame after it is resolved by master control system.Fig. 2 d left-half is represented as master control system and receives the 3-D view of the N+3 frame that frame frequency is 60Hz, and it is 60Hz right eye frame R image that Fig. 2 d right half part is represented as output frame after it is resolved by master control system, by that analogy.As it can be seen, master control system to receive image that frame frequency is 60Hz after three-dimensional decodes in an alternating fashion output frame be the left-eye frame L image of 60Hz and the right eye frame R image that frame frequency is 60Hz.That is the cycle of left-eye frame L image transmitting is 30Hz, and the cycle of right eye frame R image transmitting is 30Hz.
Fig. 3 be describe the present invention Novel shutter formula LED Three-dimensional Control System in master control system transmission 3-D view schematic diagram.Can be seen that with reference to Fig. 3, the left-eye frame L image decoded and right eye frame R image are transmitted by master control system in an alternating fashion, both master control system transmits right eye frame R image after transferring left-eye frame L image, and master control system transmits left-eye frame L image after transferring right eye frame R image, by that analogy.
Fig. 4 be describe the present invention shutter LED Three-dimensional Control System in master control system transmission time sequence figure.As it can be seen, master control system replaces the left-eye frame L image that output frame is 60Hz and the right eye frame R image that frame frequency is 60Hz, send the three-dimensional synchronizing signal of PWM waveform simultaneously.
Fig. 5 a-5b describes master control system in the described shutter LED Three-dimensional Control System of the present invention to adopt Dotmark mode to transmit the schematic diagram of three-dimensional synchronizing signal.Dotmark mode refers to that master control system is inserted into three-dimensional synchronizing signal in every frame image signal, both in every two field picture, the rgb value of certain pixel was synchronizing information, that is the image that will export is encoded by master control system, change the rgb value of certain pixel in image so that it is become synchronizing information flag bit.As shown in Figure 5 a, this figure can appreciate that the image into left-eye frame L, and the value that the pixel in the upper left corner of image is encoded to RGB by master control system is all 0.As shown in Figure 5 b, this figure can appreciate that the image into right eye frame R, and the pixel in the upper left corner of image is encoded to R=255, G=0, B=0 by master control system.Therefore the 3-D view that master control system is transmitted by transmitter extracts the position at synchronizing information place and is decoded after carrying out Data Format Transform, thus obtaining synchronous signal information.Should knowing that Fig. 5 a and Fig. 5 b is only citing, the Dotmark mode not representing the present invention can only adopt the parameter in figure, and the parameter adopting other is also feasible, also will belong in protection scope of the present invention.
DSTLink simultaneous techniques embodiment is as follows:
Step 1: the synchronizing signal receiving transmitter transmission is encoded processing by receptor, if receptor transmission is left-eye frame L picture signal, then encode out left-eye frame L Synchronization Control sequential, if receptor transmission is right eye frame R picture signal, then encode out right eye frame R Synchronization Control sequential.
Step 2: in the receptor field blackout period after transferring a two field picture, opens self-built synchronization pattern in receptor, receives effectively when field blackout period, and display output is invalid.By the Synchronization Control sequential transmission synchronization pattern encoded out to the driving IC in LED display, IC is driven to drive the display wafer in LED display to show synchronization pattern.The time shown due to synchronous images is very short and in microsecond rank, and therefore beholder is not felt by the bright dark change of LED display.
According to above-mentioned steps; will be exemplified below the specific implementation of DSTLink simultaneous techniques; should know underneath with parameter do not represent DSTLink simultaneous techniques only with underneath with parameter, it is also feasible for using other parameter, also will belong in protection scope of the present invention.
Sweeping with LED display for 1/16, Synchronization Control sequential is 2 signal periods, and the high level of 2 signal periods be all 15 microsecond low levels is 30 microseconds, and for progressive scan: both drove IC that the synchronization pattern received is progressively scanned in LED display.Drive its display wafer bright time of IC scanning the first enforcement be 15 microseconds laggard enter horizontal blackout period time be 30 microseconds (times that LED display is entirely dark), then driving its display wafer bright time of IC scanning the second enforcement is that to enter time of blanking cycle after 15 microseconds be 30 microseconds, then drive IC scan the third line make it show wafer bright time is 15 microseconds, it is 2 pulse periods synchronizing signals as shutter 3D glasses owing to selecting, simultaneously as the time of field blackout period is very short, therefore IC is driven quickly to scan through remaining 13 row display wafers, the time of scanning, The faster the better according to different driving IC, this part does not just limit, corresponding adjustment is done according to actual situation.As shown in Figure 6, for LED display shows the oscillogram of Synchronization Control sequential that wafer launches.
Fig. 7 describes the sequential chart that display image switchs with shutter 3D glasses left and right eyeglass.Can be seen that from image, if adopting non-DSTLink simultaneous techniques, then need to increase three-dimensional synchronous transmitter, the lock-out pulse that simultaneously three-dimensional synchronous transmitter is launched is with the synchronizing signal of master control system output for benchmark, therefore the image that the lock-out pulse that three-dimensional synchronous transmitter is launched and LED display show is nonsynchronous, thus resulting in the left-eye frame L image that the switch of shutter 3D glasses left and right eyeglass and LED display demonstrate is dislocation with right eye frame R image, both the image of left-eye frame L and right eye frame R can be simultaneously viewed when shutter 3D glasses holds left eyeglass lens, the image of right eye frame R and left-eye frame L can be simultaneously viewed when holding right eye eyeglass, therefore can cause that the 3D image that beholder watches has ghost phenomena.
Fig. 8 is the sequential chart describing to adopt the display image of DSTLink technology to switch with shutter 3D glasses left and right eyeglass, as can be seen from the figure, owing to adopting DSTLink simultaneous techniques, LED display show the while that the image that synchronizing signal that wafer launches and LED display shows being almost, therefore shutter 3D glasses is the image that LED display shows according to the sequential of switch right and left eyes eyeglass after the three-dimensional synchronizing signal received is synchronize, the image of left-eye frame L was can be appreciated that when both having opened left eyeglass lens, the image of right eye frame R is seen when opening right eye eyeglass, therefore the 3D image that DSTLink simultaneous techniques beholder watches is adopted not have ghost phenomena.
Fig. 9 is the schematic diagram describing to adopt the shutter 3D glasses of DSTLink technology.As it can be seen, the shutter 3D glasses arranged in pairs or groups with it includes, photoreceptor module, amplification module, signal processing module.As follows with the shutter 3D glasses implementation that DSTLink simultaneous techniques is arranged in pairs or groups mutually:
Step one: adopt sensor devices to induce the light of frame synchronizing signal show in LED display that wafer launches, say, that the change showing the sent light of wafer in LED display is converted to voltage signal magnitude by photoreceptors and changes.Photoreceptors can adopt photodiode, and the wavelength photoreceptor of selection photoelectric diode is at least in the scope of 400nm～800nm.
Step 2: the smaller ability hundreds of millivolt of voltage signal amplitude owing to being converted by photoreceptors, therefore needs to be amplified processing to the voltage number converted to by amplification module.
Step 3: again through signal processing module, the synchronizing signal form after amplifying is converted to the control signal that can control left eyeglass lens with right eye eyeglass switch, thus driving eyeglass alternation switch.
The switch time of right and left eyes eyeglass being provided as follows: set the time of LED display display left-eye frame L image as X microsecond, it is A microsecond that shutter 3D glasses opens the time of left eyeglass lens simultaneously.Then A meets " (X × 0.2)≤A≤X ", has both hidden black in the time of remaining (X-A) microsecond for closing left and right eyeglass.If the time of LED display display right eye frame R image is Y microsecond, it is B microsecond that shutter 3D glasses opens the time of right eye eyeglass.Then B meets " (Y × 0.2)≤B≤Y ", has both hidden black in the time of remaining (Y-B) microsecond for closing left and right eyeglass.The example of the present invention is described with X=16.66ms, Y=16.66ms, A=8.33ms, B=8.33ms.
nullWith resolution 1920 × 1080，Frame frequency is 60Hz is example，According to VESA standard，Under this resolution, every two field picture level has 2200 pixels，Vertically there are 1125 row，Therefore clock frequency is 2200 × 1125 × 60=148.5Mhz，The visual range of level has 1920 pixels，Vertically there are 1080 row，That is，Level has 280 points for not display，45 row are vertically had not show，In video principle，The cycle not having display is referred to as blanking cycle，It is divided into horizontal blackout period and field blackout period，Horizontal blackout period is for preparing the display of next line，Field blackout period is for preparing the display of next frame，Owing to frame frequency is 60Hz，Therefore the display time of every two field picture is 1/60=16.667ms，Line frequency is 1125 × 60=67500hz，The time that each row shows is 1/67.5Khz=0.0148148ms，So field blackout period is 0.0148148 × 45=0.6667ms.Therefore after LED display has shown a two field picture, time of field blackout period is 0.6667ms, the circuit of LED display remains electricity within so short field blackout period cannot release, so after causing that LED display has shown that a two field picture enters next frame image, LED display also has the ghost of previous frame image.When watching 3D image, shutter 3D glasses can be appreciated that the ghost of right eye frame R image when opening left eyeglass lens, can be appreciated that the ghost of left-eye frame L image when opening right eye eyeglass, according to three-dimensional imaging principle, can cause that 3-dimensional image that beholder sees is unintelligible and has ghost image.
This problem can be solved by following three mode.
Mode one: in the receptor field blackout period after transferring a two field picture, opens blank screen system self-built in receptor.Receiving when field blackout period effectively, display output is invalid, puts a pulse inside IC, does screen body without output processing.During blank screen, inside is in analog information/reception state (being called BLACK state), without output function.During BLACK state, frame synchronization test and control system send the equal normal operation of signal, in order to guarantee display/transmission Accuracy Matching.BLACK state for time can do corresponding adjustment according to different resolution, but it have to be ensured that BLACK state for time is less than time of field blackout period.
Mode two: in the receptor field blackout period after transferring a two field picture, opens black picture self-built in receptor.Receiving when field blackout period effectively, display output is invalid, transmits black picture to the driving IC in LED display, drives the display wafer in LED display to show black picture.Show that the time of black picture can do corresponding adjustment according to different resolution, but it have to be ensured that black picture display time is less than field blackout period.As shown in Figure 10, for being depicted in the schematic diagram of inserting black picture field blackout period.
Mode three: in the receptor field blackout period after transferring a two field picture, opens white picture self-built in receptor.Receiving when field blackout period effectively, display output is invalid, transmits white picture to the driving IC in LED display, drives the display wafer in LED display to show white picture.Show that the time of white picture can do corresponding adjustment according to different resolution, but it have to be ensured that white picture display time is less than field blackout period.As shown in figure 11, it is depicted in and inserts the schematic diagram of white picture field blackout period.
In sum, process owing to the realization of DSTLink simultaneous techniques and the settling mode of picture ghost phenomena all do control within field blackout period, the problem that can first process picture ghost is realizing DSTLink simultaneous techniques, or the way processing picture ghost phenomena employing embodiment three realizes, so DSTLink simultaneous techniques can be loaded into and embodiment three realize together be feasible, concrete way is with reference to the implementation of DSTLink technology mentioned above, therefore do what multiple combination allowed between this, but should be noted that the time sum of the process of the time of the realization of DSTLink simultaneous techniques and picture ghost phenomena can not be greater than field blackout period.
Although the embodiment that disclosed herein is as above, but described content is only to facilitate the embodiment understanding the present invention and adopt, is not limited to the present invention.Technical staff in any the technical field of the invention; under the premise without departing from the spirit and scope that disclosed herein; can implement in form and details do any amendment and change, but protection scope of the present invention, still must be as the criterion with the scope that appending claims defines.
Claims (10)
1. shutter LED three dimensional display controls a system, including:
LED display, master control system, transmitter, receptor, three-dimensional synchronous transmitter and shutter 3D glasses；Wherein,
The synchronizing signal of the receptor transmitter transmission to receiving is encoded processing, encode out Synchronization Control sequential, in the receptor field blackout period after transferring a two field picture, open self-built synchronization pattern in receptor, by the Synchronization Control sequential transmission synchronization pattern encoded out to the driving IC in LED display, IC is driven to drive the display wafer in LED display to show synchronization pattern.
2. shutter LED three dimensional display according to claim 1 controls system, and wherein said synchronization pattern is the black and white pattern alternately of complete white pattern or lineament.
3. shutter LED three dimensional display controls a system, including:
LED display, master control system, transmitter, receptor, three-dimensional synchronous transmitter and shutter 3D glasses；Wherein, the method for synchronization is: adopt the light that the display wafer in LED display sends to do synchronizing signal, or, produce lock-out pulse by controlling the time of the display bright dark alternate of wafer in LED display.
4. a shutter 3D glasses, can be used among the shutter LED three-dimensional display system in claim 1 or 3, and described shutter 3D glasses includes:
Photoreceptor module, amplification module, signal processing module；Wherein, described photoreceptor module adopts sensor devices to induce the light of the frame synchronizing signal showing in LED display that wafer launches, the change of described the sent light of display wafer is converted to voltage signal by sensor devices, and be amplified the voltage signal converted to processing by amplification module, again through signal processing module, the signal after amplifying is converted to the control signal that can control left eyeglass lens with right eye eyeglass switch, thus driving eyeglass alternation switch.
5. shutter 3D glasses according to claim 4, sensor devices can adopt photodiode, and the wavelength photoreceptor of selection photoelectric diode is at least in the scope of 400nm～800nm.
6. the shutter LED three dimensional display according to claim 1 or 3 controls system, and the time opening left eyeglass lens during LED display display left-eye frame image is successional with the time right and wrong closing left and right eyeglass；Or, the time opening right eye eyeglass during LED display display right eye frame image is successional with the time right and wrong closing left and right eyeglass.
7. shutter 3D glasses according to claim 4, if the time of LED display display left-eye frame image is X microsecond, it is A microsecond that shutter 3D glasses opens the time of left eyeglass lens, then A meets (X × 0.2)≤A≤X, is closedown left and right eyeglass in the time of remaining (X-A) microsecond；If the time of LED display display right eye frame R image is Y microsecond, it is B microsecond that shutter 3D glasses opens the time of right eye eyeglass, then B meets (Y × 0.2)≤B≤Y, in time of remaining (Y-B) microsecond for closing left and right eyeglass.
8. the LED three dimensional display according to claim 1 or 3 controls system, wherein,
It is 100Hz that described control system exports maximum frame rate in the three-dimensional mode, the output effective resolution of maximum image is 4096 × 2160, output maximum image resolution is 4400 × 2250, maximum output clock frequency is 4400 × 2250 × 100=990Mhz, and exporting maximum line frequency is 2250 × 100=225000hz；Or, it is 50Hz that described system exports minimum frame frequency in the three-dimensional mode, the output effective resolution of minimum image is 800 × 600, output minimum image resolution is 1024 × 624, minimum output clock frequency is 1024 × 624 × 50=31.95Mhz, and exporting minimum line frequency is 624 × 50=31200hz.
9. the LED three dimensional display according to claim 1 or 3 controls system, wherein, is eliminated the ghost of previous frame image by blank screen system self-built inside receptor, black picture or white picture.
10. LED three dimensional display according to claim 9 controls system, and wherein, the mode eliminating ghost is:
Receptor, within field blackout period, is in the BLACK state of analog information/reception state, without output function, is in the time of BLACK state less than field blackout period；
Receptor, within field blackout period, transmits black picture to the driving IC in LED display, and the time that black picture shows is less than field blackout period；Or
Receptor, within field blackout period, transmits white picture to the driving IC in LED display, and the time that white picture shows is less than field blackout period.
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