CN101600120A - Reduce the method for displaying image and the device of power consumption - Google Patents
Reduce the method for displaying image and the device of power consumption Download PDFInfo
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Abstract
A kind of method for displaying image and device that reduces power consumption, few based on the chance that occurs the pure white zone of bulk high brightness in the image, increasing by an image dissector on existing projection display system basis, is that unit carries out data analysis to determine the multiplication number of wherein various primary colours data with the frame with view data; And then the output control signal relevant with view data and multiplication number adjusted the power output of each described primary color light bundles with reduction toward described light source, and correspondingly each primary colours data of adjusting described view data are amplified in control, thereby make display image not under the prerequisite of sacrificing luminance and contrast, greatly reduce the power consumption of projection display system.Adopt the present invention and led light source, can also improve the demonstration contrast of system.
Description
Technical field
The present invention relates to Image Communication, relate in particular to coloured image and show method for displaying image and device in the projection arrangement of usefulness.
Background technology
In field of image projection, for example (but being not limited to) relates to rear-projection TV (RPTV) or front projector, and the light source applications technology is more and more ripe.Prior art is constantly carried out performance, structure or cost optimization to described light source when providing the changeable colour light source for this field.
In view of solid state light emitter, semiconductor light-emitting-diode (Light Emitting Diode for example, LED) have advantages such as long service life, low in energy consumption, wavelength-tunable, along with continuing to bring out of various novel high-power high-brightness LEDs, led light source is more and more used in above-mentioned field.
Typical projection display system as shown in Figure 1.It comprises red light source, green light source and the blue-light source that is used for producing a branch of ruddiness (R), green glow (G) and blue light (B) respectively, and be used for modulating and make described red, green, blue light beam produce the light valve of coloured image and be used for throwing red, green, blue light beam after described light valve modulation to the optical projection camera lens of screen with the generation image.Described red, green, blue light beam can but be not limited to conduct to color-combination prism by optical fiber, after converging, transport to light valve.Described light valve can be microelectromechanical-systems (MEMS, a micro-electron-mechanical system) equipment, for example based on the light valve of the DLP of company of Texas Instrument (Texas Instrument) (Digital Light Processing) technology.Signal processor is controlled each light source and optical modulator respectively by drive signal.For example, when red-light source is unlocked and during red-emitting, signal processor will red image data be sent to optical modulator (digital micro-mirror device for example, DMD); Similarly, when green glow or blue light source be unlocked and launch green/during blue light, signal processor will be sent to optical modulator to green accordingly/blue image data.If when all red, green and blue radiants all are unlocked, the gray image data will be sent to optical modulator.Wherein, the feedback control loop that light source drive signal and feedback signal are formed can be kept the stability of light source colourity and brightness, and can be used to regulate the colour temperature of projected image.Image beam after the modulation arrives display screen via projection lens projects at last.
In the above-mentioned projection display system, can also change into and adopt three light valves to come modulated red, green and blue beam respectively, again the red, green, blue light beam after the modulation be converged the described projection lens of back guiding through color-combination prism.
Described red light source, green light source and blue-light source can also produce with following manner: white light source is combined with colour wheel, utilize the motion of colour wheel, change the output color of white light with transmission or reflection mode, thereby obtain the red, green, blue light beam of timesharing output.
Application number is that 038071487 Chinese patent application discloses the method that is used to strengthen image brightness and contrast in a kind of Projection Display.This method is based on the system that provides at least one scrolling light band, display floater to be thrown light on by this scrolling light band by UHP (very-high performance) lamp and scanner, comprise step: image is carried out determining of maximum pixel brightness with behavior unit, control and the corresponding aperture of regulating this pixel on the display floater are 100%, the aperture of its pixel correspondence of this Xingqi of corresponding adjusting simultaneously and corresponding to the lamp power supply of this row; Determine that also each row obtains the lamp power of desired high-high brightness when turning on fully in the aperture, regulating the lamp power profile, to make the average power of image be specified lamp power, so that the former row that just has the maximum diameter of hole can use the lamp power that is higher than mean value, otherwise the lamp power of corresponding this row of reduction; Like this, control the brightness and contrast that the lamp power supply can strengthen projection image by described lamp power profile.
The shortcoming of above-mentioned prior art is: along with existing projection market display screen, brightness are more and more higher, optical projection system is also more and more higher to the requirement of light source power; Though disclosed projection display system can improve the brightness and contrast of projected image in the above-mentioned patent application, other optical projection system is the same can not to reduce system power dissipation with having now.Especially, described UHP lamp closes to have no progeny needs the long time to light once more, thereby generally, this UHP lamp need keep brightness constant or change little, when making in this scheme image corresponding to black, it is dark that screen can not reach completely, and promptly the Display Contrast that can not realize ideal of this scheme is 1: 0.
Summary of the invention
The technical problem to be solved in the present invention is at above-mentioned the deficiencies in the prior art part, and proposes a kind of method and device, can make optical projection system keep reducing system power dissipation under the prerequisite that display brightness and contrast index roughly do not descend.
For solving the problems of the technologies described above, of the present inventionly be contemplated that substantially: with red, green, blue three primary colors display system is example, few based on the chance that occurs the pure white zone of bulk high brightness in the image, the red, green, blue that generally is utilized does not reach its maximum simultaneously; Analyze a two field picture if use an image dissector, find out the current maximum of red, green, blue primary colours GTG in each pixel data of this image, with its expand to respectively theoretical maximum (with but when being not limited to 24 true color maximum 255 be example), when thereby corresponding each primary colours GTG with whole pixel datas enlarges identical multiple, correspondingly reduce the red, green, blue optical output power of light source; Like this, the image that is shown on optical projection system can have and roughly is not less than original brightness and contrast, and has reduced the power consumption of system because of the decline of light source output power.Especially, when producing the red, green, blue light time, because the real-time of LED switch control is good, can make screen display reach complete black, thereby improve the demonstration contrast of system with LED.
As the technical scheme that realizes the present invention's design be, a kind of method for displaying image that reduces power consumption be provided, be used for the projection display system of image, comprise step:
B. light source produces some primary color light bundles provides light output toward light valve;
C. image-signal processor is sent to light valve with a frame image data, is used for modulating described light output to produce chromatic image beam;
D. described chromatic image beam toward screen, demonstrates coloured image through the projection of optical projection camera lens;
Especially, also comprise step:
A. this frame image data is analyzed to determine the multiplication number of wherein various primary colours luma data;
Among the step C, be sent to before the described light valve, each primary colours luma data of described view data is adjusted processing according to corresponding described multiplication number earlier; Among the described step B, the power output of the some primary lights of described light source is regulated and control accordingly simultaneously.
In the such scheme, definite process of the multiplication number of described various primary colours data comprises: utilize an image dissector to read this frame image data and definite wherein various primary colours luma data maximum separately; Determine that a predetermined reference value and described each peaked ratio are each described multiplication number.
In the such scheme, determine the power output of each primary lights of light source described in the present frame, and regulate and control realization by the power supply source that changes described light source according to described each primary colours luma data maximum.
In the such scheme, described light source three primary colors power output regulation and control are based on the current power supply source supplemental characteristic of the light source of being determined by first look-up table of prior setting; This first look-up table has shown and is not changing under the primary colours display brightness prerequisite of a pixel data corresponding relation between this primary colours GTG and the described power supply source parameter.
In the such scheme, among the step C, the adjustment of each primary colours luma data of described view data handled comprise step:
1. amplify this primary colours luma data with described multiplication number, obtain corresponding screen and show virtual luma data;
2. the second look-up table by prior setting obtains in order to replace the actual input luma data of this primary colours luma data; Described second look-up table has shown that under not changing the prerequisite that shows contrast in the image these primary colours actual input GTG and described screen show the data corresponding relation between the virtual GTG.
In the such scheme, described light source produces red, green, blue three primary colors light beam; Correspondingly, each included pixel data of described view data comprises red, green, blue three primary colors data.
In the such scheme, described light source comprises one group of LED or led array of being used as light emitting source, provides incident ray to comprise some telecontrol equipments with zone of different light transmission features toward one; The motion of this telecontrol equipment makes described several regions reflect successively or the described incident ray of transmission and timesharing produces described some primary color light bundles.
In the such scheme, described light source comprises one group of LED or led array or LASER Light Source of being used as excitation source, provide past one of excitation line to comprise some telecontrol equipments with material for transformation of wave length of different wave length transfer characteristic, these material for transformation of wave length subregion on this telecontrol equipment is provided with; The motion of this telecontrol equipment makes described some material for transformation of wave length absorb described excitation line successively and timesharing excites and produces different primary color light bundles.
As the technical scheme that realizes the present invention's design still, provide a kind of image display device that reduces power consumption, comprise light valve; Can produce and provide the light source of some primary color light bundles output, receive and view data is sent to the image-signal processor of described light valve, with the chromatic image beam guiding of described light valve modulation output and projection optical projection camera lens toward display screen toward described light valve; Especially, also comprise an image dissector, with described view data is that unit carries out data analysis with the frame, and then the output control signal relevant with view data toward described light source adjusting the present output power of each described primary color light bundles, and the output control signal corresponding toward described image-signal processor to adjust described view data.
In the such scheme, also comprise the first look-up table unit, produce the described control signal for light source that is sent to according to the result of described image dissector data analysis.
In the such scheme, described light source comprises a control unit, receives the described control signal for light source that is sent to, to control the power supply source of described light source.
In the such scheme, described light source comprises three groups of independently LED or led array, produces and provide red, green, blue three primary colors light beam.
In the such scheme, described light source also comprises a location device, produces a framing signal of position of relying this telecontrol equipment of feedback according to the motion of described telecontrol equipment, offers described control unit.
In the such scheme, described telecontrol equipment is rolling disc, displacement disc or rotary drum.
Adopt above-mentioned each technical scheme, can reduce system power dissipation, thereby reduce the use cost of display system.
Description of drawings
Fig. 1 is existing projection display system theory diagram;
Fig. 2 is the theory diagram of image display device of the present invention;
Fig. 3 is one of image display device of the present invention and light source embodiment thereof a schematic diagram
Fig. 4 is two schematic diagrames of image display device of the present invention and light source embodiment thereof;
Fig. 5 is the structural representation block diagram of light source embodiment among Fig. 4;
Fig. 6 is one of the alternate embodiment of light source rotating disk and light path among a Fig. 4 schematic diagram;
Fig. 7 is two schematic diagrames of the alternate embodiment of light source rotating disk and light path among Fig. 4
Fig. 8 is three schematic diagrames of the alternate embodiment of light source rotating disk and light path among Fig. 4
Fig. 9 is the method flow exemplary plot that image of the present invention shows;
Figure 10 is the screen output GTG and the input GTG relation curve schematic diagram of display system.
Embodiment
Below, the most preferred embodiment shown in is further set forth the present invention in conjunction with the accompanying drawings.
The general employing of conventional images projection display system is red, green, blue three primary colors.In order to improve colour gamut, the six-basic-color that yellow, pinkish red, blue or green three kinds of colors constitute also appears in TV, the film field increasing.Print field can also be three primary colors with yellow, pinkish red, green grass or young crops then.In order to narrate conveniently, each embodiment will be mainly with red, and is green, and blue three primary colors are that example explains, but do not limit the primary colours scope that the present invention uses.
Therefore, conventional images projection display system and operation principle summary are: comprise light source, can produce and provide the output of red, green, blue three primary colors light beam toward light valve; Image-signal processor receives and at least one frame image data is sent to light valve, is used for modulating described light output to produce chromatic image beam; The optical projection camera lens guides described chromatic image beam to throw toward screen, demonstrates coloured image.On this basis, the improvement that the inventive method is made is before above-mentioned processing, to increase following steps:
To view data is that unit analyzes to determine wherein three kinds of primary colours luma data of red, green, blue multiplication number separately with the frame; Thereby when above-mentioned processing procedure, the red, green, blue three primary colors luma data of each described view data is before being sent to described light valve, and the described multiplication number according to correspondence is adjusted processing earlier; Simultaneously the three primary colors power output of described light source is regulated and control accordingly.
Specifically the flow chart with Fig. 9 is that example is described as follows: utilize an image dissector to read a frame image data; Determine red (R), green (G) of all pixels in this frame image data, blue (B) three primary colors luma data maximum separately earlier.Establish a predetermined reference value again, determine that this predetermined reference value and each described peaked ratio are the multiplication number.Described predetermined reference value can but to be not limited to be light valve can be supported luma data under predetermined display mode maximum, being preestablished by system provides.With 24 very the maximum 255 during color pattern be example, the R in this frame image data, G and B GTG maximum is extended respectively adjusts to 255, other R, G, B luma data are enlarged by same multiplication number respectively and are sent to light valve after handling; Meanwhile, determine light source R, G described in the present frame, B optical output power according to described each primary colours luma data maximum, and regulate and control realization: for example by the power supply source that changes described light source, when the multiplication number of a primary colours maximum correspondence is 2, the Output optical power of these primary colours in the light source can be reduced half, because the input power of light source itself and the non-linear relation of Output optical power, the minimizing of the input power of light source will equal or more than half.Like this, and compare under the original power output situation of light source, this moment, this luminance primary of pixel of this maximum correspondence was constant.
When but described light source adopts the LED of high frequency modulated or laser, in order to realize more control purpose and effect, control to described power supply source, can use digital circuit to modulate to change the waveform of described light source input voltage or input current, for example by modulation control power supply switch tube, provide a pulse to make power supply close described excitation source again for this switching tube, thereby change the optical output power of this excitation source with next the lighting fully of very fast speed (avoiding flicker) with its nominal current.Described modulation comprises pulse-width modulation, frequency modulation(FM) or parallactic angle modulation.Wherein pulse-width modulation is to realize by the width that change offers the pulse of described power supply switch tube; The width of described pulse is then fixed in frequency modulation(FM), and the described control to excitation source is realized in the recurrence interval that changes this pulse; Parallactic angle modulation then is to produce corresponding spike train with a string binary data (each pulse duration in this spike train is come unique definite by the bit place value of this pulse correspondence, for example lowest order was 1 unit interval, inferior low level be 2 unit interval, low once more by 4,8,16...... unit interval, the rest may be inferred).For different illumination application requirements, can adopt corresponding modulation control mode.Because of these modulation controls are prior art, do not given an example in detail at this.
Because it is few to exist in the frame raw image data R, G, B GTG maximum to be 255 chance, after the present invention handles, the R of view data, G or B GTG dynamic range can obtain enlarging as a rule, the power output of light source is reduced simultaneously, makes the power consumption of system greatly descend.Because as shown in Table 1, light-source brightness (corresponding with power output) is non-linear relation with the light source driving current value, and also not quite identical for this non-linear relation of different light sources.The present invention sets one first look-up table for this reason in advance, is used for showing under the prerequisite of each the primary colours display brightness that does not change a pixel data corresponding relation between each primary colours GTG and the described power supply source parameter.Table two is the anticipated partial content of this first look-up table of illustration with the LED current parameters.This look-up table can be arranged on nonvolatile memory, for example among the ROM.After described image dissector judgement obtains the described maximum of each primary colours luma data, check in the pairing LED drive current of each described maximum, adjust control signal so that the control unit of light source further produces corresponding power supply source by this first look-up table.Certainly, the described current parameters in this first look-up table unit also can replace with the various LED modulator control signal of all pulsewidth, frequencies etc. as the aforementioned parameter, searches and controls with more direct finishing quickly.
Table one:
Table two:
For the described chromatic image beam that makes light valve output keeps being not less than original display brightness of this two field picture and contrast, our corresponding problem of linearity of whether having between considering screen display brightness and the screen input brightness.If represent the screen output GTG corresponding with screen display brightness with s, with the r representative screen input GTG corresponding with screen input brightness, then there is following relational expression in display system usually:
s＝cr
γ
Wherein, c represents constant, and γ is a gamma factor.For the display system that is linear gamma (γ=1) relation, in the methods of the invention, the adjustment of each primary colours luma data of described view data is handled as long as amplify this primary colours luma data with described multiplication number.What present is non-linear gamma relation but display system, as shown in figure 10, is that a γ is substantially equal to the screen output GTG in 2.2 the display system and the relation curve of input GTG.At such display system, when a luma data by a multiplication number linear amplification also behind " input " screen, because this primary light source power output is adjusted, the brightness of screen actual displayed generally can be greater than or less than the pairing display brightness of screen input brightness this moment.Therefore, the actual displayed contrast of image is with impaired.Formula for fear of complexity calculates and avoids taking the processor excess resource, the present invention introduces screen at such display system and shows virtual GTG and the notion of importing GTG in most preferred embodiment: with compare under the original power output situation of light source, a luma data is shown pairing adjustment back data without distortion be considered as actual input GTG, utilize the data after described multiplication number directly amplifies this GTG to be considered as the apparent virtual GTG of screen; Then can set a second look-up table according to the gamma relation or the gamma relation curve of this system in advance, show that under the prerequisite that does not change image demonstration contrast each primary colours actual input GTG and described screen show the data corresponding relation between the virtual GTG (corresponding to the output GTG of gamma relation).
In sum, in the methods of the invention, the adjustment of each primary colours luma data of described view data handled comprise step: amplify this primary colours luma data with described multiplication number, obtain the apparent virtual luma data of corresponding screen; Obtain in order to replace the actual input luma data of this primary colours luma data by described second look-up table again.This second look-up table can be based on the inside of described image-signal processor or plug-in ROM and is set up.
Fig. 2 has illustrated the theory diagram of image display device of the present invention; Fig. 3 is an embodiment block diagram of apparatus of the present invention.Different with existing apparatus is, apparatus of the present invention also comprise an image dissector, with the view data that receives is that unit carries out data analysis with the frame, and then the output control signal relevant with view data toward described light source to adjust the power output of described three primary colors light beam, and the output control signal corresponding makes described view data be received by this image-signal processor after data are sent to light valve after amplifying adjustment toward image-signal processor.Described image dissector and described image-signal processor can adopt same chip to realize, for example adopt programmable logic device, realize as CPLD or FPGA; Also can adopt different chips to realize respectively.
Described light source adopts LED (light-emitting diode) to have and is easy to control and control the good advantage of real-time.Shown in Fig. 3 embodiment, this light source can comprise some groups (for example three groups) independently LED or led array, produces and provide described red, green, blue three primary colors light beam respectively.These red, green, blue three primary colors light beams are led after color-combination prism converges toward described light valve.Three tunnel control signals of will exporting described image dissector are sent to the power supply source of described three groups of LED or led array respectively.The present invention can also obtain feedback signal from the power supply source of described three groups of LED or led array or light output and send described image dissector respectively back to, so that System self-test or improve stability.
In addition, in apparatus of the present invention, described light source can also comprise one group of LED or led array that is used as light emitting source as shown in Figure 4, provide incident ray to comprise some telecontrol equipments (, also claiming colour wheel) such as but not limited to illustrated rolling disc with zone of different light transmission features toward one; The motion of this telecontrol equipment makes the described several regions described incident ray of transmission and timesharing produces described red, green, blue three primary colors light beam successively.Usually, described LED or led array are selected as emitting white light, and described rolling disc comprises at least 3 described zones, are used for the transmission red, green, blue respectively.Produce the difference of efficient according to system's different colours light, can dispose and make the colour wheel zone of described red, green, blue three primary colors light correspondence have different accountings, thereby as shown in Figure 4, can (but being not limited to) comprise 4 zones (a, b, c, d) on the described rolling disc, for example regional a, the saturating ruddiness of b, the c light that reveals the green, the saturating blue light of d.If adopt different light path design, described transmission can also be equal to alternative with reflection, and as shown in Figure 6, rolling disc reflects described incident ray by different light transmission features zone and produces different primary color light bundles.
Light source as shown in Figure 4, also can be to comprise one group of LED or led array or LASER Light Source that is used as excitation source, provide past one of excitation line to comprise some telecontrol equipments (such as but not limited to illustrated rolling disc) with material for transformation of wave length of different wave length transfer characteristic, these material for transformation of wave length subregion on this telecontrol equipment is provided with; The motion of this telecontrol equipment makes described some material for transformation of wave length absorb described excitation line successively and timesharing excites and produces different primary color light bundles.
When the emission light of described excitation source was blue light, described rolling disc comprised at least two kinds of described material for transformation of wave length, was used for being excited to produce red, green primary light beam respectively.Described rolling disc can comprise at least 3 zones, and wherein two are used for carrying respectively described two kinds of material for transformation of wave length, another be used for reflecting or the emission light of the described excitation source of transmission so that the blue primary light beam to be provided.
When the emission light of described excitation source was ultraviolet light, described rolling disc comprised at least three kinds of described material for transformation of wave length, was carried on respectively on three zones of this rolling disc, was used for being excited to produce the red, green, blue primary color light bundles.
Equally, according to the difference of light conversion efficiency, can dispose and make the zone of described different wave length transition material correspondence on rolling disc, have different accountings.
Described material for transformation of wave length comprises fluorescent material, dyestuff or quantum dot.Described telecontrol equipment can also be a rotary drum as shown in Figure 7 except above-mentioned rolling disc, or displacement disc as shown in Figure 8.
Fig. 5 has further illustrated light-source structure of the present invention, and it comprises a control unit.Apparatus of the present invention also comprise one first look-up table unit, produce the described control signal for light source that is sent to according to the result of described image dissector data analysis, control the power supply source of described light source, make this light source that the light of the three primary colors with corresponding power output is provided.Accurate control for ease of the output beam color, described light source can be provided with a location device on telecontrol equipment, produce a framing signal of position of relying this telecontrol equipment of feedback with the motion of this telecontrol equipment, offer described control unit, realize accurate location described zone.This positioner as shown in Figure 6, can but to be not limited to be a projection at rolling disc edge, a photodetector or a dynamo-electric inspection of aiming at the precalculated position is set outside described telecontrol equipment touches device, when the motion of this rolling disc drives described projection and arrives this precalculated position, produce a trigger impulse, be used as described framing signal, point out the beginning of regional a.This positioner can also be as shown in Figure 7, can but be not limited to be the reflection bar that is provided with on the rotary drum or absorb bar, be used for reflecting or absorbing the light that is adopted in photoelectric emission and the receiving system, so that when this reflection bar or absorption bar move with rotary drum, the light path of connecting or block receiving system is produced the beginning that corresponding pulse signal is pointed out regional a.Even when producing motion under the effect of described telecontrol equipment at servomechanism installation, described servomechanism installation might be exported the relevant signal of an angle or position, and this signal can be used as the framing signal of described positioner.
Shown in the dotted portion of Fig. 5, light source of the present invention can also comprise a Photoelectric Detection probe, and output detects and testing result is sent to described control unit to the light after the rolling disc described in the optical channel; Can this control unit be adjusted described control signal according to this testing result, so that in the field to the light source requirements strictness, meet the demands to the light source emergent light and to detect.
The inventive method and device can greatly reduce the power consumption of system through experimental verification in the projection of normal image.Especially, be example with the black image terrifically, described image dissector can be exported control signal led light source is turned off fully, thus the black of realizing ideal on screen has promoted the contrast of image.
Also can reach the purpose that reduces system power dissipation for the two field picture that some is existed the high brightness white region, the inventive method can also make improvements slightly based on the flow process of Fig. 9, increase or change step are as follows: after described image dissector reads two field picture, judge earlier that whether the high brightness white region that exists in this two field picture is less than predetermined scope; If not, then abandon adjustment to view data and light source power supply source; Otherwise will in the view data scope outside the described high brightness white region, determine the described maximum of each primary colours.This frame image data is adjusted when handling, is kept original value constant view data within the described high brightness white region, outside data handle according to preceding method.The simulated experiment checking, distortion can be in human eye be accepted scope to the image after the processing (especially containing the general television image that highlighted captions show).
Claims (29)
1. method for displaying image that reduces power consumption is used for the projection display system of image, comprises step:
B. light source produces some primary color light bundles provides light output toward light valve;
C. image-signal processor is sent to light valve with a frame image data, is used for modulating described light output to produce chromatic image beam;
D. described chromatic image beam toward screen, demonstrates coloured image through the projection of optical projection camera lens;
It is characterized in that, also comprise step:
A. this frame image data is analyzed to determine the multiplication number of wherein various primary colours luma data;
Among the step C, be sent to before the described light valve, each primary colours luma data of described view data is adjusted processing according to corresponding described multiplication number earlier; Among the described step B, the power output of the some primary lights of described light source is regulated and control accordingly simultaneously.
2. according to the method for displaying image of the described reduction power consumption of claim 1, it is characterized in that definite process of the multiplication number of described various primary colours data comprises:
Utilize an image dissector to read this frame image data and definite wherein various primary colours luma data maximum separately; Determine that a predetermined reference value and described each peaked ratio are each described multiplication number.
3. according to the method for displaying image of the described reduction power consumption of claim 2, it is characterized in that:
Described predetermined reference value is light valve can be supported luma data under predetermined display mode a maximum.
4. according to the method for displaying image of the described reduction power consumption of claim 2, it is characterized in that:
When described image dissector is judged the high brightness white region that exists in this two field picture less than predetermined scope, each described maximum will be determined according to the view data outside the described high brightness white region.
5. according to the method for displaying image of the described reduction power consumption of claim 2, it is characterized in that:
Determine the power output of each primary lights of light source described in the present frame according to described each primary colours luma data maximum, and regulate and control realization by the power supply source that changes described light source.
6. according to the method for displaying image of the described reduction power consumption of claim 5, it is characterized in that:
The mode that changes the power supply source of described light source comprises: adopt pulse-width modulation, frequency modulation(FM) or parallactic angle modulation system to change the waveform of described light source input voltage or input current.
7. according to the method for displaying image of claim 1 or 5 described reduction power consumptions, it is characterized in that:
Described light source three primary colors power output regulation and control are based on the current power supply source supplemental characteristic of the light source of being determined by first look-up table of prior setting; This first look-up table has shown and is not changing under the primary colours display brightness prerequisite of a pixel data corresponding relation between this primary colours GTG and the described power supply source parameter.
8. according to the method for displaying image of the described reduction power consumption of claim 1, it is characterized in that, among the step C, the adjustment of each primary colours luma data of described view data handled comprise step:
1. amplify this primary colours luma data with described multiplication number, obtain corresponding screen and show virtual luma data;
2. the second look-up table by prior setting obtains in order to replace the actual input luma data of this primary colours luma data; Described second look-up table has shown that under not changing the prerequisite that shows contrast in the image these primary colours actual input GTG and described screen show the data corresponding relation between the virtual GTG.
9. according to the method for displaying image of the described reduction power consumption of claim 1, it is characterized in that:
Described light source produces red, green, blue three primary colors light beam; Correspondingly, each included pixel data of described view data comprises red, green, blue three primary colors data.
10. according to the method for displaying image of the described reduction power consumption of claim 1, it is characterized in that:
Described light source comprises some groups of independently LED or led array, produces and provide described some primary color light bundles.
11. the method for displaying image according to the described reduction power consumption of claim 10 is characterized in that:
Described some primary color light bundles are led after color-combination prism converges toward described light valve.
12. the method for displaying image according to the described reduction power consumption of claim 1 is characterized in that:
Described light source comprises one group of LED or led array of being used as light emitting source, provides incident ray to comprise some telecontrol equipments with zone of different light transmission features toward one; The motion of this telecontrol equipment makes described several regions reflect successively or the described incident ray of transmission and timesharing produces described some primary color light bundles.
13. the method for displaying image according to the described reduction power consumption of claim 12 is characterized in that:
Described LED or led array emit white light, and described telecontrol equipment comprises at least 3 described zones, are used for respectively reflecting or the transmission red, green, blue.
14. the method for displaying image according to the described reduction power consumption of claim 1 is characterized in that:
Described light source comprises one group of LED or led array or LASER Light Source of being used as excitation source, provide past one of excitation line to comprise some telecontrol equipments with material for transformation of wave length of different wave length transfer characteristic, these material for transformation of wave length subregion on this telecontrol equipment is provided with; The motion of this telecontrol equipment makes described some material for transformation of wave length absorb described excitation line successively and timesharing excites and produces different primary color light bundles.
15. the method for displaying image according to the described reduction power consumption of claim 14 is characterized in that:
The emission light of described excitation source is blue light, and described telecontrol equipment comprises at least two kinds of described material for transformation of wave length, is used for being excited to produce red, green primary light beam respectively.
16. the method for displaying image according to the described reduction power consumption of claim 15 is characterized in that:
Described telecontrol equipment comprises at least 3 described zones, and wherein two are used for carrying respectively described two kinds of material for transformation of wave length, another be used for reflecting or the emission light of the described excitation source of transmission so that the blue primary light beam to be provided.
17. the method for displaying image according to the described reduction power consumption of claim 14 is characterized in that:
The emission light of described excitation source is ultraviolet light, and described telecontrol equipment comprises at least three kinds of described material for transformation of wave length, is used for being excited to produce the red, green, blue primary color light bundles respectively.
18. the method for displaying image according to the described reduction power consumption of claim 14 is characterized in that:
Described material for transformation of wave length comprises fluorescent material, dyestuff or quantum dot.
19. the method for displaying image according to claim 12 or 14 described reduction power consumptions is characterized in that:
Described telecontrol equipment is rolling disc, displacement disc or rotary drum.
20. an image display device that reduces power consumption comprises light valve; Can produce and provide the light source of some primary color light bundles output, receive and view data is sent to the image-signal processor of described light valve, with the chromatic image beam guiding of described light valve modulation output and projection optical projection camera lens toward display screen toward described light valve; It is characterized in that:
Also comprise an image dissector, with described view data is that unit carries out data analysis with the frame, and then the output control signal relevant with view data toward described light source adjusting the present output power of each described primary color light bundles, and the output control signal corresponding toward described image-signal processor to adjust described view data.
21. the image display device according to the described reduction power consumption of claim 20 is characterized in that:
Also comprise the first look-up table unit, produce the described control signal for light source that is sent to according to the result of described image dissector data analysis.
22. the image display device according to the described reduction power consumption of claim 20 is characterized in that:
Described light source comprises a control unit, receives the described control signal for light source that is sent to, to control the power supply source of described light source.
23. the image display device according to claim 20 or 22 described reduction power consumptions is characterized in that:
Described light source comprises three groups of independently LED or led array, produces and provide red, green, blue three primary colors light beam.
24. the image display device according to claim 20 or 22 described reduction power consumptions is characterized in that:
Described light source comprises one group of LED or led array of being used as light emitting source, provides incident ray to comprise some telecontrol equipments with zone of different light transmission features toward one; The motion of this telecontrol equipment makes described several regions reflect successively or the described incident ray of transmission and timesharing produce red, green, blue three primary colors light beam.
25. the image display device according to claim 20 or 22 described reduction power consumptions is characterized in that:
Described light source comprises one group of LED or led array or LASER Light Source of being used as excitation source, provide past one of excitation line to carry some telecontrol equipments with material for transformation of wave length of different wave length transfer characteristic, these material for transformation of wave length subregion on this telecontrol equipment is provided with; The motion of this telecontrol equipment makes described some material for transformation of wave length absorb described excitation line successively and timesharing excites and produces different primary color light bundles.
26. the image display device according to the described reduction power consumption of claim 25 is characterized in that:
Described telecontrol equipment comprises that at least two kinds are excited to produce respectively described material for transformation of wave length red, the green primary light beam.
27. the image display device according to the described reduction power consumption of claim 25 is characterized in that:
Described telecontrol equipment comprises at least three kinds of described material for transformation of wave length of being excited to produce respectively the red, green, blue primary color light bundles.
28. the image display device according to claim 24 or 25 described reduction power consumptions is characterized in that:
Described light source also comprises a location device, produces a framing signal of position of relying this telecontrol equipment of feedback according to the motion of described telecontrol equipment, offers described control unit.
29. the image display device according to claim 24 or 25 described reduction power consumptions is characterized in that:
Described telecontrol equipment is rolling disc, displacement disc or rotary drum.
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| CN 200810067702 CN101600120B (en) | 2008-06-04 | 2008-06-04 | Method and device for displaying image by reducing power consumption |
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| CN 200810067702 CN101600120B (en) | 2008-06-04 | 2008-06-04 | Method and device for displaying image by reducing power consumption |
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| CN113422944A (en) * | 2021-06-30 | 2021-09-21 | 青岛海信激光显示股份有限公司 | Signal transmission method and projection equipment |
| CN116939179A (en) * | 2023-09-15 | 2023-10-24 | 深圳魔秀文化科技有限公司 | Low-power consumption control method, system, equipment and medium for spherical screen system |
| CN116939179B (en) * | 2023-09-15 | 2024-01-12 | 深圳魔秀文化科技有限公司 | Low-power consumption control method, system, equipment and medium for spherical screen system |
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