CN116564245B - Multi-partition light source projection device, system and control method based on time domain - Google Patents
Multi-partition light source projection device, system and control method based on time domain Download PDFInfo
- Publication number
- CN116564245B CN116564245B CN202310571928.4A CN202310571928A CN116564245B CN 116564245 B CN116564245 B CN 116564245B CN 202310571928 A CN202310571928 A CN 202310571928A CN 116564245 B CN116564245 B CN 116564245B
- Authority
- CN
- China
- Prior art keywords
- light source
- partition
- module
- data
- brightness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005192 partition Methods 0.000 title claims abstract description 146
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 51
- 239000011324 bead Substances 0.000 claims abstract description 35
- 239000000758 substrate Substances 0.000 claims abstract description 19
- 239000003086 colorant Substances 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims description 45
- 238000012545 processing Methods 0.000 claims description 19
- 230000001360 synchronised effect Effects 0.000 claims description 15
- 230000007704 transition Effects 0.000 claims description 9
- 238000004364 calculation method Methods 0.000 claims description 4
- 230000002123 temporal effect Effects 0.000 claims description 4
- 238000009792 diffusion process Methods 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 238000000265 homogenisation Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Classifications
-
- 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
- G09G3/36—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 using liquid crystals
- G09G3/3607—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 using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
- G03B21/006—Projectors using an electronic spatial light modulator but not peculiar thereto using LCD's
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2053—Intensity control of illuminating light
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/208—Homogenising, shaping of the illumination light
-
- 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
-
- 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
- G09G3/3413—Details of control of colour illumination sources
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Nonlinear Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Optics & Photonics (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention relates to a multi-partition light source projection device, a system and a control method based on a time domain, wherein the device comprises a multi-partition light source plate module and a multi-partition light source control plate; the multi-partition light source plate module comprises a substrate, wherein a lamp bead array is arranged on the substrate, and a minimum lamp bead unit forming the lamp bead array comprises lamp beads with three colors of red, green and blue; fine switching control of each light source area on the multi-partition light source plate module is realized; the invention provides a brand new light source projection mode, creatively combines a partition backlight control technology with a time domain control technology of lamp bead colors, and compared with the traditional single light source scheme and color liquid crystal panel scheme, the theoretical value of brightness of the scheme can be improved by 2-3 times, contrast ratio can be improved by more than fifty percent, color gamut can be improved by more than twenty percent, and the aim of breaking technical blockage of three-piece liquid crystal screen type projection is fulfilled.
Description
Technical Field
The present invention relates to the field of projection technologies, and in particular, to a multi-partition light source projection device, system and control method based on a time domain.
Background
With the development of projection technology, the liquid crystal panel is continuously updated, the brightness of the light source is continuously improved, the sound is better, the experience is obviously improved greatly, and more projections are taken into thousands of households. The single light source projection is realized by the principle that the light source passes through the screen and a specific light path, and finally, the image is projected onto the curtain through the lens. The characteristic of the single light source is that the closer to the light source is, the brighter the single light source is, so that the common single light source projection is bright in the middle, the periphery is relatively dark, and the picture brightness cannot be uniform; the projection picture is obtained through various optical special effect lens arrays and color liquid crystal panels, and in the working process, a single light source needs to be kept normally bright, and absolute black is difficult to achieve when the normally bright light source is in a dark field, so that an image cannot be completely and truly restored, the contrast is to be improved, and the power consumption is constant; meanwhile, when a single light source is projected in production, assembly and use, if dust falls on a screen or a light path device, obvious black spots can appear on a picture. For this reason, it is important to solve the above problems by optimizing the light source.
At present, the projection devices on the market are divided into three types according to the imaging principle, one type is a single light source and single-chip color liquid crystal projection technology, and the projection devices pass through a color liquid crystal screen through a single white super-bright light source and are imaged through various optical devices. The second is that three light sources are matched with three single-color liquid crystal screens, three light sources with three colors of red, green and blue are respectively irradiated on the three single-color liquid crystal screens to obtain images with three colors of red, green and blue, and then a lens array is used for imaging. The third is to use DLP mode of the american TI company, where the three lamps red, green and blue are imaged by the DMD, or the white light source is divided into three colors of red, green and blue by a color wheel, and then imaged by the DMD in synchronization. The single light source and single liquid crystal screen type projection has obvious improvement in brightness and resolution in recent years, and has low price, large market share and quick growth, but has no obvious improvement in uniformity of picture brightness, is always bright in the middle, has relatively dark periphery, is difficult to be well focused, and in the working process, the single light source needs to be kept normally bright, absolute black (dark gray and light gray are common in dark fields) is difficult to be realized when the normally bright light source is in dark fields, and the contrast ratio is also unsatisfactory; in the processing and using processes, dust falls on a screen or an optical path device, and the dust is difficult to clean; meanwhile, the light transmittance of the color liquid crystal panel is very low, and the brightness of the whole projection device can be improved only by increasing the power of a light source, but the power consumption is increased and the temperature is greatly improved. Although the three lamps in the DLP mode have relatively good experience on the uniformity of brightness and focusing of the picture, the three lamps are hard wounded on price and contrast, dust has larger influence on black spots of the picture, and the requirements on production environment are higher; in addition, the laser light source is relatively effective, but is costly. Three liquid crystal display type projection has high cost and difficult light path design, and meanwhile, the patent is easy to be clamped in the foreigner's hands. Therefore, the invention discloses a novel light source projection device which is autonomous, controllable, reliable, good in contrast, high in brightness and reasonable in power consumption, and the novel light source projection device is a problem to be solved by a person skilled in the art.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a multi-partition light source projection device based on a time domain, a multi-partition light source projection system based on the time domain and a multi-partition light source projection control method based on the time domain aiming at the defects of the prior art.
The technical scheme adopted for solving the technical problems is as follows:
Constructing a multi-partition light source projection device based on a time domain, wherein the multi-partition light source projection device comprises a multi-partition light source plate module and a multi-partition light source control plate;
The multi-partition light source plate module comprises a substrate, wherein a lamp bead array is arranged on the substrate, and a minimum lamp bead unit forming the lamp bead array comprises lamp beads with three colors of red, green and blue;
The multi-partition light source control board receives the digital signal and converts the data in the digital signal into RGB data of each pixel in the video picture and a video synchronization signal; generating pixel control signals in each frame of picture according to the video synchronization signals; dividing the whole area light source of the multi-partition light source plate module into a plurality of light source areas, analyzing RGB data of each pixel, calculating optimal brightness data of each area in the whole video picture, and controlling output power of each corresponding light source area according to the optimal brightness data; performing enhancement control on the brightness of a dark light source area in the multi-partition light source plate module; transmitting the related data of the output power to the light source driving chips of all the affiliated partitions for driving control so as to obtain the final actual brightness; the pixel control signals are transmitted to the liquid crystal panel for data processing, RGB display data of pixels are sequentially transmitted to the monochromatic liquid crystal panel for data processing according to the sequence of red, green and blue, and synchronous control signals in the pixel control signals also simultaneously control RGB lamp beads on the multi-partition light source plate module, namely, the liquid crystal panel respectively displays each frame of RGB, and meanwhile, the RGB lamp beads on the multi-partition light source plate module are accurately controlled in switching and brightness according to the same color.
The invention discloses a time domain-based multi-partition light source projection device, which comprises a front lens group, a grating and a rear lens group, wherein the multi-partition light source plate module, the front lens group, the grating and the rear lens group are sequentially arranged;
The front lens group is used for carrying out light collimation and light homogenization treatment on light rays emitted by the multi-partition light source plate module;
The grating is used for filtering light rays which are not parallel to the light path;
The rear lens group is used for performing diffusion treatment on the light passing through the grating.
The multi-partition light source projection device based on the time domain provided by the invention further comprises a single-color liquid crystal panel, wherein the rear lens group and the single-color liquid crystal panel are sequentially arranged.
The multi-partition light source projection device based on the time domain provided by the invention further comprises a Fresnel lens and a lens, wherein the monochromatic liquid crystal panel, the Fresnel lens and the lens are sequentially arranged.
The multi-partition light source projection system based on the time domain is applied to the multi-partition light source projection device based on the time domain, and comprises a signal receiving module, a pixel control signal generating module, an initial brightness calculating module, a dark area enhancing module, a spatial filtering module, a time filtering module, a power control module and a signal sending module;
The signal receiving module is used for receiving the digital signal, and converting the data in the digital signal into the most basic RGB data of each pixel in the video picture and a video synchronous signal;
the pixel control signal generating module is used for generating a pixel control signal in each frame of picture according to the video synchronization signal output by the signal receiving module;
The initial brightness calculation module is used for calculating the initial brightness of each independent light source area in the multi-partition light source plate module;
The dark region enhancement module is used for realizing the brightness enhancement control of a dark light source region in the multi-partition light source plate module;
The spatial filtering module is used for realizing spatial filtering control of each region in the multi-partition light source plate module so as to realize smooth transition of the brightness of the light source on a spatial domain;
The time filtering module is used for realizing time filtering control of each area in the multi-partition light source plate module so as to realize smooth transition of the brightness of the light source on a time domain;
the power control module is used for controlling the output power of each light source area in the multi-partition light source plate module to achieve the required brightness;
The signal sending module is used for converting one frame of video field data containing red, green and blue data of each pixel into one frame of video field data containing red data, one frame of green data and one frame of blue data of each pixel, sequentially transmitting the video field data of three frames of different colors and synchronous control signals to the single-color liquid crystal panel in sequence, and simultaneously controlling RGB (red, green and blue) lamp beads on the multi-partition light source plate module.
The time domain based multi-zone light source projection system of the present invention, wherein the digital signal is in the format RGB, LVDS, eDP, V-BY-ONE or mipi.
The multi-partition light source projection control method based on the time domain is applied to the multi-partition light source projection device based on the time domain, and comprises the following steps:
receiving a digital signal, and converting data in the digital signal into the most basic RGB data of each pixel in a video picture and a video synchronous signal;
generating a pixel control signal in each frame of picture according to the video synchronous signal output by the signal receiving module;
Analyzing the RGB data, and calculating the initial brightness of each light source area in the multi-partition light source plate module according to the pixel control signals;
Dividing the whole area light source into a plurality of light source areas, and controlling the output power of each light source area in the multi-partition light source plate module according to the initial brightness;
brightness enhancement control of a dark light source area in the multi-partition light source plate module;
transmitting the related data of the output power to the light source driving chips of all the affiliated partitions for driving control so as to obtain the final actual brightness;
Transmitting the pixel control signals to the liquid crystal panel for data processing;
Sequentially transmitting RGB display data of pixels to a monochromatic liquid crystal panel according to the sequence of red, green and blue for data processing;
and simultaneously controlling the RGB lamp beads on the multi-partition light source plate module by the synchronous control signals in the pixel control signals.
The invention relates to a time domain-based multi-partition light source projection control method, wherein the method for transmitting pixel control signals to a liquid crystal panel for data processing comprises the following steps:
converting the parallel data into serial data and sending the serial data to the partition light source control module;
Spatial filtering control is performed on each pixel area in the partitioned light source control module, wherein each pixel area corresponds to each light source area in the multi-partitioned light source plate module;
and controlling the time filtering of each frame of video picture in the liquid crystal panel to realize the smooth transition of the video picture.
The invention discloses a multi-partition light source projection control method based on a time domain, wherein the spatial filtering control is based on the formula:
LSF(n)＝max(Lben(n),{Lben(m)-TSF|∈Φ(n)})；
L SF (n) denotes a result of spatial filtering of the nth partition, L ben (n) is a luminance enhancement value of the nth partition, and L ben (m) is a luminance enhancement value of the mth partition; t SF is a predefined parameter for controlling the filter smoothness; phi (n) is a neighborhood of size 3X3 centered on the nth partition.
The invention discloses a multi-partition light source projection control method based on a time domain, wherein the time filtering control is based on the formula:
Wherein the method comprises the steps of Representing the output of the temporal filtering, (k) and (k-1) representing the current frame and the previous frame, respectively; /(I)Representing the brightness value of the current frame partition; /(I)Representing the brightness value of the previous frame partition; the parameter R (R is more than 0 and less than or equal to 1) controls the smoothness of the filtering, and the smaller R is, the smoother the filtering is, and less picture jitter is observed;
The formula for R is as follows:
Where T TF is a predefined parameter that controls the filter shape, P mean is the normalized average pixel value for all pixels in a frame of the picture, (k) and (k-1) represent the current frame and the previous frame, respectively; And/> Representing normalized average pixel values for the current frame and the previous frame.
The invention has the beneficial effects that: the invention provides a brand new light source projection mode, creatively combines a partition backlight control technology with a time domain control technology of lamp bead colors, and compared with the traditional single light source scheme and color liquid crystal panel scheme, the theoretical value of brightness of the scheme can be improved by 2-3 times, contrast ratio can be improved by more than fifty percent, color gamut can be improved by more than twenty percent, and the aim of breaking technical blockage of three-piece liquid crystal screen type projection is fulfilled.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and embodiments, in which the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained by those skilled in the art without inventive effort:
FIG. 1 is an exploded view of a multi-zone light source projection device based on time domain according to a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of a time domain principle of a multi-partition light source projection device based on a time domain according to a preferred embodiment of the present invention;
FIG. 3 is a schematic block diagram of a time domain based multi-zone light source projection control system in accordance with a preferred embodiment of the present invention;
FIG. 4 is a flowchart of a multi-partition light source projection control method based on time domain according to a preferred embodiment of the present invention;
Fig. 5 is a schematic diagram showing the division of a plurality of light source regions in a multi-partition light source projection control method based on a time domain according to a preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the following description will be made in detail with reference to the technical solutions in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present invention, based on the embodiments of the present invention.
Referring to fig. 2, the multi-partition light source projection device based on time domain according to the preferred embodiment of the present invention, as shown in fig. 1, includes a multi-partition light source board module 2 and a multi-partition light source control board 11;
The multi-partition light source plate module 2 comprises a substrate, wherein a lamp bead array is arranged on the substrate, and a minimum lamp bead unit forming the lamp bead array comprises lamp beads with three colors of red, green and blue;
A multi-partition light source control board 11 receiving the digital signal and converting data in the digital signal into RGB data of each pixel in the video picture and a video synchronization signal; generating pixel control signals in each frame of picture according to the video synchronization signals; dividing the whole area light source of the multi-partition light source plate module into a plurality of light source areas, analyzing RGB data of each pixel, calculating optimal brightness data of each area in the whole video picture, and controlling output power of each corresponding light source area according to the optimal brightness data; performing enhancement control on the brightness of a dark light source area in the multi-partition light source plate module; transmitting the related data of the output power to the light source driving chips of all the affiliated partitions for driving control so as to obtain the final actual brightness; transmitting pixel control signals to a liquid crystal panel for data processing, sequentially transmitting RGB display data of pixels to a monochromatic liquid crystal panel for data processing according to the sequence of red, green and blue, and simultaneously controlling RGB lamp beads on a multi-partition light source plate module by synchronous control signals in the pixel control signals, namely, accurately controlling the switching and the brightness of the RGB lamp beads on the multi-partition light source plate module according to the same color while the liquid crystal panel displays each frame of RGB picture respectively;
the invention provides a brand new light source projection mode, creatively combines a partition backlight control technology with a time domain control technology of lamp bead colors, and compared with the traditional single light source scheme and color liquid crystal panel scheme, the theoretical value of brightness of the scheme can be improved by 2-3 times, contrast ratio can be improved by more than fifty percent, color gamut can be improved by more than twenty percent, and the aim of breaking technical blockage of three-piece liquid crystal screen type projection is fulfilled.
As shown in fig. 2, the time domain method is described as follows: adopting time sequence to synchronously display R, G, B fields, and constructing a full-color picture by utilizing the vision residual characteristic of human eyes; r, G, B three video fields are displayed in a time sharing way, the display time of any color field is 1/3 of the normal video field time, if the display picture is 60Hz field frequency, the R, G, B three colors respectively display 60 frames of pictures in one second, and the display time is 180Hz field frequency;
Preferably, the multi-partition light source projection device further comprises a front lens group 5, a grating 3, a rear lens group 6, a monochromatic liquid crystal panel 7, a fresnel lens 8 and a lens 10 (a reflector 9 can be added according to the requirement); the light source emitted by the multi-partition light source plate module 2 is subjected to light collimation and light homogenization treatment through the front lens group 5, light which is not parallel to a light path is filtered through the grating 3, the light utilization rate of the light is increased, the light passing through the grating is subjected to diffusion treatment through the rear lens group 6, the boundary dark area of the adjacent light source area is eliminated, and after passing through the monochromatic liquid crystal panel 7, an image is projected through the Fresnel lens and finally the lens 10;
The multi-partition light source plate module is arranged for multiple light sources so as to realize the whole-surface light emission and the requirement that each area can emit light independently; the radiator module and the multi-partition light source plate module are assembled into a whole to realize heat dissipation of the multi-partition light source plate module and the multi-partition light source control plate, and ensure reliable operation of the multi-partition light source plate module and the multi-partition light source control plate; the partition light source control board is used for realizing the fine switching control of each light source area on the multi-partition light source board module, thereby realizing the brightness requirement of each area in the video picture and achieving different display effects; preferably, the heat dissipation module 1 (4 is a fan matched with the heat dissipation module) can be configured to dissipate heat of the multi-partition light source plate module 2.
The multi-partition light source plate module 2 comprises a lamp bead array and a substrate; the lamp bead array is fixed on the substrate, and the whole back surface of the substrate is coated with heat-conducting silicone grease. In this embodiment, the substrate is provided as an aluminum substrate.
In another preferred embodiment, the substrate may be a copper substrate, a glass fiber cloth substrate, a synthetic fiber cloth substrate, a non-woven fabric substrate, a composite substrate, or the like, which is not particularly limited herein;
The application makes the light source of the projection device into a multi-partition light source of RGB colors densely distributed on the light source plate so as to achieve the effect that the whole surface of the light source plate can emit light and form various colors, and realizes accurate and independent control of brightness or switch aiming at the multi-light source densely distributed on the light source plate; the light sources are arranged in multiple subareas, and the light sources of each subarea are driven by weak current, so that the power consumption and the temperature are effectively reduced; the liquid crystal panel adopts single color, which can greatly improve the light transmittance and reduce the cost. Therefore, the projection device has the advantages of uniform picture brightness, enhanced contrast, enhanced color gamut, improved brightness, reduced power consumption and low temperature by adopting the technical means.
A time domain based multi-partition light source projection system is applied to the time domain based multi-partition light source projection device as described above, and as shown in fig. 3, the system comprises a signal receiving module 100, a pixel control signal generating module 101, an initial brightness calculating module 102, a dark region enhancing module 103, a spatial filtering module 104, a time filtering module 105, a power control module 106 and a signal sending module 107;
a signal receiving module 100 for receiving a digital signal, converting data in the digital signal into RGB data, which is the most basic of each pixel in a video picture, and a video synchronization signal;
preferably, the digital signal may be in the form of RGB, LVDS, eDP, V-BY-ONE, mipi, etc.;
a pixel control signal generating module 101, configured to generate a pixel control signal in each frame of picture according to the video synchronization signal output by the signal receiving module;
The initial brightness calculation module 102 is configured to calculate initial brightness of each independent light source area in the multi-partition light source plate module;
the dark area enhancement module 103 is used for realizing brightness enhancement control of a dark light source area in the multi-partition light source plate module;
The spatial filtering module 104 is configured to implement spatial filtering control of each region in the multi-partition light source plate module, so as to implement smooth transition of the brightness of the light source on the spatial domain;
the time filtering module 105 is used for realizing time filtering control of each area in the multi-partition light source plate module so as to realize smooth transition of the brightness of the light source on a time domain;
A power control module 106, configured to control output power of each light source area in the multi-partition light source board module to achieve a desired brightness;
The signal sending module 107 is configured to convert one frame of video field data including red, green and blue data of each pixel into one frame of video field data including red data, one frame of green data and one frame of blue data of each pixel, sequentially send three frames of video field data with different colors and synchronization control signals to the monochrome liquid crystal panel in sequence, and simultaneously control RGB lamp beads on the multi-partition light source board module by the synchronization control signals in the pixel control signals;
The operation principle of each module is as follows: receiving the digital signal and converting the data in the digital signal into RGB data of each pixel in the video picture and a video synchronization signal; generating pixel control signals in each frame of picture according to the video synchronization signals; dividing the whole area light source of the multi-partition light source plate module into a plurality of light source areas, analyzing RGB data of each pixel, calculating optimal brightness data of each area in the whole video picture, and controlling output power of each corresponding light source area according to the optimal brightness data; performing enhancement control on the brightness of a dark light source area in the multi-partition light source plate module; transmitting the related data of the output power to the light source driving chips of all the affiliated partitions for driving control so as to obtain the final actual brightness; transmitting pixel control signals to a liquid crystal panel for data processing, and sequentially transmitting RGB display data of pixels to a monochromatic liquid crystal panel for data processing according to the sequence of red, green and blue; the synchronous control signals in the pixel control signals also control the RGB lamp beads on the multi-partition light source plate module at the same time, so that the liquid crystal panel can display each frame of RGB picture respectively, and meanwhile, the RGB lamp beads on the multi-partition light source plate module can be accurately controlled to switch and brightness according to the same color.
The time domain-based multi-partition light source projection control method is applied to the time domain-based multi-partition light source projection device, as shown in fig. 4, and comprises the following steps:
S01: receiving a digital signal, and converting data in the digital signal into the most basic RGB data of each pixel in a video picture and a video synchronous signal;
Taking LVDS signals as an example, the input LVDS signals are: a system clock SYS_CLK, a global RESET RESET, and LVDS differential clock signals CLK_ P, CLK _ N, LVDS differential data signals lane0_p/n-lane3_p/n; the output signal is: the line synchronization signal HSYNC, the field synchronization signal VSYNC, the data enable signal DE, the pixel clock signal rx_clock, the 8-bit RED data RED [7:0], the 8-bit GREEN data GREEN [7:0], and the 8-bit BLUE data BLUE [7:0]. It can be understood that when the digital signal format is the eDP signal or the V-BY-ONE signal or mipi signal, the processing flow is substantially the same, and will not be described here again;
s02: generating a pixel control signal in each frame of picture according to the video synchronous signal output by the signal receiving module;
generating five pixel control signals hstart, hend, vstart, vend, valid according to three video synchronization signals of output Vsync (field synchronization signal), hsync (line synchronization signal), den (data enable signal);
s03: analyzing the RGB data, and calculating the initial brightness of each light source area in the multi-partition light source plate module according to the pixel control signals;
Specifically, the calculation of the initial brightness of each light source area in the multi-partition light source plate module may be implemented by the prior art, which is not specifically limited herein;
S04: dividing the whole area light source into a plurality of light source areas, and controlling the output power of each light source area in the multi-partition light source plate module according to the initial brightness;
referring to fig. 5, fig. 5 is a schematic diagram illustrating a division of an entire surface light source into a plurality of light source regions according to the present application.
Specifically, in this embodiment, the complete area light source is converted into a plurality of subarea light sources; obtaining optimal brightness data by calculating and analyzing pictures displayed in different partitions, converting the brightness data into driving current values, and then giving the driving current values to light source driving chips of the corresponding partitions to obtain the desired actual brightness; by using as many partitioned light sources as possible, different brightness is displayed in different areas on the same picture, and the ultra-high contrast ratio of more than two to three thousands can be easily achieved. It is understood that the number of the zones of the surface light source may be set as needed without specific limitation;
specifically, the present application sets a threshold mid and a maximum average luminance value upper_bound. When the average brightness of the light source area is smaller than mid, the brightness is output according to the original value, and when the average brightness exceeds mid, the output value is adjusted in a segmented mode, and the method is not particularly limited;
s05: brightness enhancement control of a dark light source area in the multi-partition light source plate module;
Specifically, in the present embodiment, it is necessary to determine a dark light source region, and when a certain dark light source region is determined as a dark light source region, luminance enhancement control of the dark light source region is performed. It will be appreciated that the determination of the dark light source region is achieved by the prior art and is not specifically limited herein;
S06: transmitting the related data of the output power to the light source driving chips of all the affiliated partitions for driving control so as to obtain the final actual brightness;
s07: transmitting pixel control signals to a liquid crystal panel for data processing, sequentially transmitting RGB display data of pixels to a monochromatic liquid crystal panel for data processing according to the sequence of red, green and blue, and synchronously switching and accurately controlling brightness of RGB lamp beads on a multi-partition light source plate module according to the sequence;
the method for transmitting the pixel control signals to the liquid crystal panel for data processing comprises the following steps:
converting the parallel data into serial data and sending the serial data to the partition light source control module;
Spatial filtering control is carried out on each pixel area in the partitioned light source control module, and each pixel area corresponds to each light source area in the multi-partitioned light source plate module;
and controlling the time filtering of each frame of video picture in the liquid crystal panel to realize the smooth transition of the video picture.
Preferably, the spatial filtering control is according to the formula:
LSF(n)＝max(Lben(n),{Lben(m)-TSF|m∈Φ(n)})；
L SF (n) denotes a result of spatial filtering of the nth partition, L ben (n) is a luminance enhancement value of the nth partition, and L ben (m) is a luminance enhancement value of the mth partition; t SF is a predefined parameter for controlling the filter smoothness; phi (n) is a neighborhood of size 3X3 centered on the nth partition.
Preferably, the temporal filtering control is according to the formula:
Wherein the method comprises the steps of Representing the output of the temporal filtering, (k) and (k-1) representing the current frame and the previous frame, respectively; /(I)Representing the brightness value of the current frame partition; /(I)Representing the brightness value of the previous frame partition; the parameter R (R is more than 0 and less than or equal to 1) controls the smoothness of the filtering, and the smaller R is, the smoother the filtering is, and less picture jitter is observed;
The formula for R is as follows:
Where T TF is a predefined parameter that controls the filter shape, P mean is the normalized average pixel value for all pixels in a frame of the picture, (k) and (k-1) represent the current frame and the previous frame, respectively; And/> Representing normalized average pixel values for the current frame and the previous frame.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (9)
1. The multi-partition light source projection device based on the time domain is characterized by comprising a multi-partition light source plate module and a multi-partition light source control plate;
The multi-partition light source plate module comprises a substrate, wherein a lamp bead array is arranged on the substrate, and a minimum lamp bead unit forming the lamp bead array comprises lamp beads with three colors of red, green and blue;
The multi-partition light source control board receives the digital signal and converts the data in the digital signal into RGB data of each pixel in the video picture and a video synchronization signal; generating pixel control signals in each frame of picture according to the video synchronization signals; dividing the whole area light source of the multi-partition light source plate module into a plurality of light source areas, analyzing RGB data of each pixel, calculating optimal brightness data of each area in the whole video picture, and controlling output power of each corresponding light source area according to the optimal brightness data; performing enhancement control on the brightness of a dark light source area in the multi-partition light source plate module; transmitting the related data of the output power to the light source driving chips of all the affiliated partitions for driving control so as to obtain the final actual brightness; transmitting pixel control signals to a liquid crystal panel for data processing, sequentially transmitting RGB display data of pixels to a monochromatic liquid crystal panel for data processing according to the sequence of red, green and blue, and simultaneously controlling RGB lamp beads on a multi-partition light source plate module by synchronous control signals in the pixel control signals, namely, accurately controlling the switching and the brightness of the RGB lamp beads on the multi-partition light source plate module according to the same color while the liquid crystal panel displays each frame of RGB picture respectively;
The multi-partition light source projection device further comprises a front lens group, a grating and a rear lens group, wherein the multi-partition light source plate module, the front lens group, the grating and the rear lens group are sequentially arranged;
The front lens group is used for carrying out light collimation and light homogenization treatment on light rays emitted by the multi-partition light source plate module;
The grating is used for filtering light rays which are not parallel to the light path;
The rear lens group is used for performing diffusion treatment on the light passing through the grating.
2. The time domain based multi-zone light source projection device of claim 1, further comprising a single color liquid crystal panel, the rear lens group and the single color liquid crystal panel being disposed in sequence.
3. The time domain based multi-zone light source projection device of claim 2, further comprising a fresnel lens and a lens, wherein the single color liquid crystal panel, the fresnel lens and the lens are sequentially disposed.
4. A multi-partition light source projection system based on a time domain, which is applied to the multi-partition light source projection device based on the time domain as claimed in any one of claims 1-3, and is characterized by comprising a signal receiving module, a pixel control signal generating module, an initial brightness calculating module, a dark area enhancing module, a spatial filtering module, a time filtering module, a power control module and a signal sending module;
The signal receiving module is used for receiving the digital signal, and converting the data in the digital signal into the most basic RGB data of each pixel in the video picture and a video synchronous signal;
the pixel control signal generating module is used for generating a pixel control signal in each frame of picture according to the video synchronization signal output by the signal receiving module;
The initial brightness calculation module is used for calculating the initial brightness of each independent light source area in the multi-partition light source plate module;
The dark region enhancement module is used for realizing the brightness enhancement control of a dark light source region in the multi-partition light source plate module;
The spatial filtering module is used for realizing spatial filtering control of each region in the multi-partition light source plate module so as to realize smooth transition of the brightness of the light source on a spatial domain;
The time filtering module is used for realizing time filtering control of each area in the multi-partition light source plate module so as to realize smooth transition of the brightness of the light source on a time domain;
the power control module is used for controlling the output power of each light source area in the multi-partition light source plate module to achieve the required brightness;
The signal sending module is used for converting one frame of video field data containing red, green and blue data of each pixel into one frame of video field data containing red data, one frame of green data and one frame of blue data of each pixel, sequentially transmitting the video field data of three frames of different colors and synchronous control signals to the single-color liquid crystal panel in sequence, and simultaneously controlling RGB (red, green and blue) lamp beads on the multi-partition light source plate module.
5. The time domain based multi-zone light source projection system of claim 4, wherein the digital signal is in the format RGB, LVDS, eDP, V-BY-ONE or mipi.
6. A time domain based multi-partition light source projection control method applied to the time domain based multi-partition light source projection device as claimed in any one of claims 1-3, comprising the steps of:
receiving a digital signal, and converting data in the digital signal into the most basic RGB data of each pixel in a video picture and a video synchronous signal;
generating a pixel control signal in each frame of picture according to the video synchronous signal output by the signal receiving module;
Analyzing the RGB data, and calculating the initial brightness of each light source area in the multi-partition light source plate module according to the pixel control signals;
Dividing the whole area light source into a plurality of light source areas, and controlling the output power of each light source area in the multi-partition light source plate module according to the initial brightness;
brightness enhancement control of a dark light source area in the multi-partition light source plate module;
transmitting the related data of the output power to the light source driving chips of all the affiliated partitions for driving control so as to obtain the final actual brightness;
Transmitting the pixel control signals to the liquid crystal panel for data processing;
and sequentially transmitting RGB display data of pixels to a monochromatic liquid crystal panel according to the sequence of red, green and blue for data processing, and synchronously switching and accurately controlling the brightness of RGB lamp beads on the multi-partition light source plate module according to the sequence.
7. The time domain based multi-zone light source projection control method of claim 6, wherein transmitting the pixel control signal to the liquid crystal panel for data processing comprises:
converting the parallel data into serial data and sending the serial data to the partition light source control module;
Spatial filtering control is performed on each pixel area in the partitioned light source control module, wherein each pixel area corresponds to each light source area in the multi-partitioned light source plate module;
and controlling the time filtering of each frame of video picture in the liquid crystal panel to realize the smooth transition of the video picture.
8. The time domain based multi-zone light source projection control method of claim 7, wherein the spatial filtering control is according to the formula:
；
Representing the result of the spatial filtering of the nth partition,/> For the luminance enhancement value of the nth partition,A brightness enhancement value for the m-th partition; /(I)Is a predefined parameter for controlling the smoothness of the filtering; Is a neighborhood with the nth partition as the center and the size of 3X 3.
9. The time domain based multi-zone light source projection control method of claim 7, wherein the time filtering control is based on the formula:
；
wherein the method comprises the steps of Representing the output of the temporal filtering, (k) and (k-1) representing the current frame and the previous frame, respectively; /(I)Representing the brightness value of the current frame partition; /(I)Representing the brightness value of the previous frame partition; the parameter R,0<R is less than or equal to 1; controlling the smoothness of the filtering, the smaller R is, the smoother the filtering is, and less picture jitter is observed;
The formula for R is as follows:
；
Wherein the method comprises the steps of Is a predefined parameter controlling the shape of the filter,/>Is the normalized average pixel value of all pixels in a frame of picture, (k) and (k-1) represent the current frame and the previous frame, respectively; /(I)Representing normalized average pixel values for the current frame and the previous frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310571928.4A CN116564245B (en) | 2023-05-19 | 2023-05-19 | Multi-partition light source projection device, system and control method based on time domain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310571928.4A CN116564245B (en) | 2023-05-19 | 2023-05-19 | Multi-partition light source projection device, system and control method based on time domain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116564245A CN116564245A (en) | 2023-08-08 |
| CN116564245B true CN116564245B (en) | 2024-04-26 |
Family
ID=87497923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310571928.4A Active CN116564245B (en) | 2023-05-19 | 2023-05-19 | Multi-partition light source projection device, system and control method based on time domain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116564245B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001356316A (en) * | 2000-06-16 | 2001-12-26 | Sharp Corp | Projection type image display device |
| JP2002318368A (en) * | 2001-04-20 | 2002-10-31 | Sanyo Electric Co Ltd | Projection type video display device |
| CN1627126A (en) * | 2003-12-04 | 2005-06-15 | 夏普株式会社 | Projector optical system configuration, optical module and projector, and equipment using same |
| CN101111882A (en) * | 2004-12-23 | 2008-01-23 | 杜比加拿大公司 | Wide color gamut displays |
| CN110764356A (en) * | 2019-11-08 | 2020-02-07 | 珠海市大晟云视传媒科技有限公司 | DLP projection system and method for enhancing dynamic contrast |
| US10809610B1 (en) * | 2019-06-06 | 2020-10-20 | Nanhua Intelligent Precision Machine (shenzhen) Co., Ltd. | Two-piece LCD projector based on semi-field sequence display manner |
| CN112946975A (en) * | 2021-03-29 | 2021-06-11 | 峰米(北京)科技有限公司 | Single-chip LCD projection structure, projector and projection method |
| CN114185232A (en) * | 2020-09-14 | 2022-03-15 | 深圳光峰科技股份有限公司 | Display device |
| CN114245879A (en) * | 2019-08-02 | 2022-03-25 | 索尼集团公司 | Projection system and control method of projection system |
| CN114911121A (en) * | 2021-02-09 | 2022-08-16 | 深圳晶微峰光电科技有限公司 | Illumination light source and projection system |
| CN115938313A (en) * | 2022-09-30 | 2023-04-07 | 深圳市科金明电子股份有限公司 | Display driving method and device, liquid crystal controller, display system and projection device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105988266A (en) * | 2015-02-05 | 2016-10-05 | 深圳市绎立锐光科技开发有限公司 | Projection equipment, projection control system and projection control method |
-
2023
- 2023-05-19 CN CN202310571928.4A patent/CN116564245B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001356316A (en) * | 2000-06-16 | 2001-12-26 | Sharp Corp | Projection type image display device |
| JP2002318368A (en) * | 2001-04-20 | 2002-10-31 | Sanyo Electric Co Ltd | Projection type video display device |
| CN1627126A (en) * | 2003-12-04 | 2005-06-15 | 夏普株式会社 | Projector optical system configuration, optical module and projector, and equipment using same |
| CN101111882A (en) * | 2004-12-23 | 2008-01-23 | 杜比加拿大公司 | Wide color gamut displays |
| US10809610B1 (en) * | 2019-06-06 | 2020-10-20 | Nanhua Intelligent Precision Machine (shenzhen) Co., Ltd. | Two-piece LCD projector based on semi-field sequence display manner |
| CN114245879A (en) * | 2019-08-02 | 2022-03-25 | 索尼集团公司 | Projection system and control method of projection system |
| CN110764356A (en) * | 2019-11-08 | 2020-02-07 | 珠海市大晟云视传媒科技有限公司 | DLP projection system and method for enhancing dynamic contrast |
| CN114185232A (en) * | 2020-09-14 | 2022-03-15 | 深圳光峰科技股份有限公司 | Display device |
| WO2022052868A1 (en) * | 2020-09-14 | 2022-03-17 | 深圳光峰科技股份有限公司 | Display device |
| CN114911121A (en) * | 2021-02-09 | 2022-08-16 | 深圳晶微峰光电科技有限公司 | Illumination light source and projection system |
| CN112946975A (en) * | 2021-03-29 | 2021-06-11 | 峰米(北京)科技有限公司 | Single-chip LCD projection structure, projector and projection method |
| CN115938313A (en) * | 2022-09-30 | 2023-04-07 | 深圳市科金明电子股份有限公司 | Display driving method and device, liquid crystal controller, display system and projection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116564245A (en) | 2023-08-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Seetzen et al. | High dynamic range display systems | |
| TWI232956B (en) | Illuminator, projection display device and method for driving the same | |
| TWI230009B (en) | Display image generation with differential illumination | |
| US9224323B2 (en) | Systems and methods for increasing spatial or temporal resolution for dual modulated display systems | |
| TWI248553B (en) | Adaptive image display | |
| US6970148B2 (en) | Image display method | |
| US7303288B2 (en) | Image display device | |
| US6819064B2 (en) | Display system | |
| US20080246782A1 (en) | Color display system | |
| US20110050861A1 (en) | Stereoscopic image display device and stereoscopic image display method | |
| US20090109248A1 (en) | Display Apparatus Having a Multiplicity of Pixels and Method for Displaying Images | |
| US20060023003A1 (en) | Color display apparatus | |
| KR20120023627A (en) | High dynamic range projection system | |
| US20090273540A1 (en) | System and Method for Providing Uniform Brightness in Seam Portions of Tiled Images | |
| JP4937539B2 (en) | Image display method and method for increasing brightness of output image of display device | |
| TW201030426A (en) | Addressable backlight for LCD panel | |
| JP4956980B2 (en) | Image display method and apparatus, and projector | |
| CN116564245B (en) | Multi-partition light source projection device, system and control method based on time domain | |
| JP2006003586A (en) | Image display apparatus, its method and program | |
| WO2019024363A1 (en) | Display device and display method | |
| CN113039484B (en) | Image display device | |
| WO2016147236A1 (en) | Illumination device | |
| CN116300287A (en) | Partition backlight projection control device, system and control method | |
| JP2016181865A (en) | Image processing device, display device, and image processing method | |
| TWI524816B (en) | Color sequential display and light source control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |