CN101715140A - Method for dynamic regulation of projection and projection display device - Google Patents
Method for dynamic regulation of projection and projection display device Download PDFInfo
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- CN101715140A CN101715140A CN200910170844A CN200910170844A CN101715140A CN 101715140 A CN101715140 A CN 101715140A CN 200910170844 A CN200910170844 A CN 200910170844A CN 200910170844 A CN200910170844 A CN 200910170844A CN 101715140 A CN101715140 A CN 101715140A
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Abstract
The invention relates to a method for the dynamic regulation of projection and a projection display device. The technical problem to be solved by the invention is to provide the method for the dynamic regulation of projection. The method for the dynamic regulation of projection is suitable for a projection display device which is used for displaying output images and comprises a light source, wherein the light source is driven by pulse periodic signals. The method for the dynamic regulation of projection comprises the following steps of: (a) judging brightness parameters of the output images; (b) regulating the pulse periodic signals according to the brightness parameters; and (c) driving the light source by using the pulse periodic signals.
Description
[technical field]
The present invention is about a kind of projection dynamic adjusting method and projection display equipment, and is particularly to a kind of method for controlling projection and the projection arrangement thereof that can dynamically adjust according to the luminance parameter of image output.
[background technology]
Progress into the audio-visual application market of general family along with consumption electronic products, corresponding different consumption group industry has been developed quite polynary Projection Display product, for example digital optical processing (Digital LightProcessing, DLP) projection arrangement, liquid crystal (Liquid Crystal Display, LCD) projection arrangement and reflective silicon single (Liquid Crystal on Silicon, LCOS) projection arrangement etc., wherein the DLP projection arrangement is owing to have high brightness, correct tone reproduction, reaction time fast, advantages such as low picture noise and device volume are compact, thereby become one of popular optical projection system of a new generation.
With present common on the market digital optical processing projection device is example, the DLP projection arrangement is a technical foundation with electric component of microcomputer (MEMS), (Digital Micromirror Device DMD), constitutes the main framework of this projection arrangement to cooperate the employing digital micro-mirror device.The DLP projection arrangement mainly comprises light source, color block module, photoconductive tube, beam split and closes set of lenses, DMD and the imaging lens etc. of light.See also Fig. 1, Fig. 1 illustrates the schematic diagram of a kind of projection display system 1 of prior art.Projection display system 1 among Fig. 1 is an example with the DLP projection arrangement, and the light of its light source 10 emissions is at first by colour wheel 12, and colour wheel 12 is provided with the optical filtering zone of different colours.
According to different optical projection systems, the light of process colour wheel also may pass through photoconductive tube and processing such as lens subassembly beam split and light compositing again.At last, light will focus on the digital micro-mirror device 14 (DMD), and by the angle of inclination and the deflection period of plural micro-reflector on the drive electrode control figure micro-mirror device 14, the reflection direction of switches light is projected on the screen and imaging via imaging lens 16 again.Compared to the projection arrangement that other principle is made, the DLP projection arrangement has high brightness, correct, the high contrast of color rendition, can make advantage such as mini light and handyization of fuselage.
As mentioned above, at present in the DLP projection arrangement, when light will carry out the color separation action by colour wheel 12 after light source 10 emissions.With present common DLP projection arrangement along with its application scenario difference is divided into several classification, for example emphasize that color is true to nature, during saturation effect, adopt the colour wheel in more traditional red, green and blue three look districts.Or, when stressing the high brightness of image, must adopt colour wheel usually in the design of colour wheel with white, green, blue and red four look districts.Recently, industry also develops three kinds of secondary colours such as a kind of adding dark green (the green indigo plant that adds), yellow (red add green) and white, green with three basic pure colors, the blue and red six look colour wheels in totally six look districts that form.
User for projector experiences, with standard now, outstanding projector needs all to represent excellent performance on projection size, display brightness (brightness), lumen (lumen), contrast (contrast ratio) and color saturation various demonstration specifications such as (colorsaturation), to meet consumer's expectation.
Wherein, with industrywide standard now, the bright dark contrast of picture is defined with the ratio of white picture luminous flux (Flux-White) with black picture luminous flux (Flux-Black) usually.
In order to improve the contrast in the image demonstration, known projection display equipment utilizes adjustment light source power (for example bulb wattage) to improve the image contrast of display usually and shows at present.For example: the bright dark contrast of picture is under the normal mode: Flux-White (light source total power)/Flux-Black (light source total power); Under the contrast enhancement mode, the bulb power reduction with light source makes the bright dark contrast of the whole picture of projection display equipment be: Flux-White (light source total power)/Flux-Black (power after the light source adjustment) by this.The actual contrast that can reach promotes degree and is directly proportional with power drop degree after the light source adjustment.Yet, known contrast enhancement techniques needs the gross power of frequent toggle lights, so frequent gross power adjustment will significantly be shortened the useful life of light source, make the user need bear extra device maintenance cost, and also the stability to projection display equipment has adverse effect.
In order to address the above problem, the present invention proposes a kind of projection dynamic adjusting method and projection display equipment, and it can promote the contrast effect of display frame, to address the above problem.
[summary of the invention]
One object of the present invention is to provide a kind of projection dynamic adjusting method, be applicable to a projection display equipment, this projection display equipment is in order to show image output, this projection display equipment comprises light source, this light source is driven by pulse-period signal, this pulse-period signal comprises relative high penetration signal spacing and relative low penetration rate signal spacing, and this relative high penetration signal spacing and this relative low penetration rate signal spacing have the first interval power and the second interval power respectively.
According to a specific embodiment, the projection dynamic adjusting method comprises the following step: the luminance parameter of judging this image output; According to this luminance parameter, with this second interval power of this first interval power of adjusting this relative high penetration signal spacing and this relative low penetration rate signal spacing at least one of them mode adjust this pulse-period signal, when wherein the two all was adjusted when this second interval power of this first interval power of this relative high penetration signal spacing and this relative low penetration rate signal spacing, the two was adjusted in reverse relatively mode; And utilize this pulse-period signal to drive this light source.Brightness is the physical quantity of expression people to the luminous or actual impression of intensity of reflected light of luminous element or shone thing surface, the conventional unit relevant with brightness be for example: cd (candle light, the size that refers to the luminous flux of the visible light that light source sent), cd/m2 (every square metre candle power brilliance, abbreviate lumen lm or nits as), lms (lumen-second, also be called talbots), lm/m2 (is called for short lx, the luminous flux of visible light is accepted or sent to per unit area), lm/W (every watt lumen number, the ratio of luminous flux and radiant flux) or the like, aforementioned each conventional unit all can be in order to the picture brightness of the image output among quantization means the present invention.Luminance parameter among the present invention then is the numerical value corresponding to image output brightness, this numerical value can be the brightness value of image output picture under a certain brill, also can be the conversion value that this brightness value is converted to through certain mathematics, this conversion can be non-linear.The luminance parameter of each frame image output can be drawn by the electronic signal calculation that comprises this frame image output information.For example the luminance parameter of the corresponding white picture of definition is 100, and the luminance parameter of corresponding black picture is 0, and the brightness of a certain frame image output is 60% of white picture brightness, and the luminance parameter that then can obtain this frame image output is 60.
Another object of the present invention is to provide a kind of projection display equipment, in order to show an image output.
According to a specific embodiment, this projection display equipment comprises light source, drive circuit and processing module.Drive circuit is in order to produce pulse-period signal to drive this light source, this pulse-period signal comprises relative high penetration signal spacing and relative low penetration rate signal spacing, and this relative high penetration signal spacing and this relative low penetration rate signal spacing have the first interval power and the second interval power respectively.Processing module and drive circuit electrically connect, processing module is judged the luminance parameter of image output, and according to this luminance parameter control Driver Circuit with this second interval power of this first interval power of adjusting this relative high penetration signal spacing and this relative low penetration rate signal spacing at least one of them mode adjust pulse-period signal, when wherein the two all was adjusted when this second interval power of this first interval power of this relative high penetration signal spacing and this relative low penetration rate signal spacing, the two was adjusted in reverse relatively mode.
Compared to prior art, projection dynamic adjusting method of the present invention and projection display equipment can utilize the mode of dynamic adjustment, at different image output characteristics, promote the contrast or the color saturation of its Projection Display.
[description of drawings]
Fig. 1 illustrates the schematic diagram of a kind of projection display system of prior art.
Fig. 2 illustrates the schematic diagram according to projection display equipment in the specific embodiment of the present invention.
Fig. 3 illustrates the schematic diagram according to colour wheel in the specific embodiment of the present invention.
Fig. 4 illustrates the sequential schematic diagram according to pulse-period signal in the specific embodiment of the present invention.
Fig. 5 illustrates the schematic flow sheet according to the adjustment mechanism of paired pulses periodic signal in the projection dynamic adjusting method of a specific embodiment of the present invention.
Fig. 6 A illustrate according in the specific embodiment of the present invention through the sequential schematic diagram of dynamic adjusted pulse-period signal.
Fig. 6 B illustrate according in the specific embodiment of the present invention through the sequential schematic diagram of dynamic adjusted pulse-period signal.
[embodiment]
See also Fig. 2, Fig. 2 illustrates the schematic diagram according to projection display equipment 3 in the specific embodiment of the present invention.Projection display equipment 3 can be widely used in various occasions such as family, amusement or enterprise to show specific image output (dial put or work briefing etc. as television image, film).As shown in Figure 2, in this embodiment, projection display equipment 3 can comprise light source 30, colour wheel 32, drive circuit 34, processing module 36 and in order to the assemblies such as colour wheel control module 38 of control colour wheel 32, but the present invention is not as limit.In practical application, for the actual projection imaging of finishing light, projection display equipment 3 can further comprise photoconductive tube, beam split again and close other necessary or assembly optionally such as set of lenses, DMD and imaging lens of light, this people by prior art is known, so for the convenience in the explanation, do not illustrated explanation one by one at this.
In this embodiment, light source 30 is in order to produce light and projection by colour wheel 32.See also Fig. 3, Fig. 3 illustrates the schematic diagram according to colour wheel 32 in the specific embodiment of the present invention.Colour wheel 32 can be provided with different color blocks, it allows the light of different frequency range to pass through respectively, has three colour mixture blocks (320a, 320b, 320c) such as three pure color blocks such as redness, blueness, green (322a, 322b, 322c) and yellow (Lan Jiahong), dark green (indigo plant adds green), white altogether as the colour wheel among Fig. 3 32.Wherein, with spectrum, three pure color blocks (322a, 322b, 322c) only allow that the light of less frequency range passes through, the relative low penetration rate zone 322 of formation, the luminous flux of the light that can pass through in the period in the relative low penetration rate zone 322 of colour wheel 32 is less, but the color performance is more saturated.On the other hand, with spectrum, three colour mixture blocks (320a, 320b, 320c) allow that then the light of bigger frequency range passes through, the relative high penetration zone 320 that forms, the luminous flux of the light that can pass through in the period in the relative high penetration zone 320 of colour wheel 32 is more, then can bring higher display brightness.
What need pay special attention to is, projection display equipment 3 of the present invention is not limited to specific number of colours (three looks, four looks, six looks), color scheme (putting in order or ratio) or specific colour wheel structure, also can the arrange in pairs or groups filter module of other tool equality of projection display equipment 3, it can be in order to form relative high and low penetrance zone.Colour wheel control module 38 is in order to control running speed of colour wheel 32 and cycle etc.
See also Fig. 4, Fig. 4 illustrates the sequential schematic diagram according to pulse-period signal Drv in the specific embodiment of the present invention.As shown in Figure 4, pulse-period signal Drv is for having periodic voltage or current signal.In this embodiment, in each cycle of pulse-period signal Drv, comprise relative high penetration signal spacing HB and relative low penetration rate signal spacing LB.
In this embodiment, pulse-period signal Drv has the pulse period gross power, and high penetration signal spacing HB has the first interval power and the second interval power respectively with relative low penetration rate signal spacing LB relatively.
High penetration signal spacing HB can comprise at least one subinterval respectively with relative low penetration rate signal spacing LB relatively.In this embodiment, relatively high penetration signal spacing HB comprises three subintervals (hb1, hb2, hb3) altogether and corresponds to three colour mixture blocks (320a, 320b, 320c) on the colour wheel respectively, and the relative high penetration signal spacing HB of pulse-period signal Drv has corresponding relation with the relative high penetration zone 320 of colour wheel 32 by this.Relatively low penetration rate signal spacing LB comprises three subintervals (lb1, lb2, lb3) altogether and corresponds to three pure color blocks (322a, 322b, 322c) on the colour wheel respectively, and the low penetration rate signal spacing LB of pulse-period signal Drv has corresponding relation with the relative low penetration rate zone 322 of colour wheel 32 by this.Yet the present invention is not limited to the subinterval number (three) and arrangement mode (of the same type adjacent) of this embodiment, and the number in subinterval also can be decided according to the convenience on application scenario or the manufacture process with arrangement in the practical application.
See also Fig. 5, Fig. 5 illustrates the schematic flow sheet according to the adjustment mechanism of paired pulses periodic signal Drv in the projection dynamic adjusting method of a specific embodiment of the present invention.Projection dynamic adjusting method of the present invention can cooperate projection display equipment 3 runnings in the previous embodiment, or also can be widely used in similar other projection arrangement or the system.
At first execution in step S100 utilizes processing module 36 to judge the luminance parameter of image output.
When processing module 36 judges that the luminance parameter of image output is greater than first predetermined value, when promptly this moment, image output need possess higher brightness, then execution in step S102 utilizes processing module 36 control Driver Circuit 34 to increase the first interval power of this relative high penetration signal spacing HB.In the practical application, can see through increase in the pulse-period signal relatively the voltage of high penetration signal spacing HB and electric current at least one of them, to increase this first interval power.By this, its proportion by relative high penetration zone 320 on the colour wheel 32 of the light that light source 30 produces will improve, and the high-high brightness of show image will obtain to promote by this.
In this simultaneously, projection display equipment 3 is execution in step S104 further, reduces the second interval power of the relative low penetration rate signal spacing LB of pulse-period signal.In the practical application, can by the voltage that reduces relative low penetration rate signal spacing LB and electric current at least one of them, to reduce by the second interval power.Herein, the minimizing amplitude of the second interval power roughly can the corresponding first interval power increasing degree, and then the pulse period gross power of keeping pulse-period signal is roughly constant, the driving gross power that is to say light source is roughly constant, can avoid this kind dynamically to adjust causing adverse effect the useful life of light source by this.
See also Fig. 6 A, Fig. 6 A illustrates the sequential schematic diagram through the dynamic adjusted pulse-period signal Drv ' of above-mentioned steps (S102 and S104).As shown in Figure 6A, the difference that adjusted pulse-period signal Drv ' compares default pulse-period signal Drv is, step S102 increases the first interval power of relative high penetration signal spacing HB, but be not limited to each subinterval hb1 among the relative high penetration signal spacing HB, voltage or the electric current of hb2 and hb3 are comprehensive, critical increase, as shown in Figure 6A, the voltage in different subintervals or electric current can be according to the adjustment (partly or comprehensively increasing) in various degree of practical application do, in the present embodiment, be voltage or the electric current that increases hb2 and hb3, but reduce voltage or the electric current of hb1, the first interval power of relative high penetration signal spacing HB is increased.In like manner, step S104, adjust relative low penetration rate signal spacing LB subinterval power separately, in the present embodiment, be voltage or the electric current that reduces lb1 and lb3, but increase voltage or the electric current of lb2, the second interval power of the relative low penetration rate signal spacing LB of pulse-period signal is reduced.
On the other hand, when processing module 36 judges that the luminance parameter of image output is less than second predetermined value, promptly this moment, image output was during than low-light level, and then execution in step S106 utilizes processing module 36 control Driver Circuit 34 to increase the second interval power of relative low penetration rate signal spacing LB.In the practical application, can see through increase in the pulse-period signal relatively the voltage of low penetration rate signal spacing LB and electric current at least one of them, to increase by the second interval power.By this, its proportion by relative low penetration rate zone 322 (comprising three red, blue, green pure color block 322a, 322b, 322c) on the colour wheel 32 of the light that light source 30 produces will improve, the color saturation of show image will obtain to promote by this, and the brightness of show image will reduce.
In like manner, projection display equipment 3 is execution in step S108 further, by the voltage that reduces relative high penetration signal spacing HB and electric current at least one of them, the first interval power of the relative high penetration signal spacing HB of minimizing pulse-period signal.Herein, the first interval power roughly can be corresponding mutually with the increase and decrease amplitude of the second interval power, and then the pulse period gross power of keeping pulse-period signal is roughly constant, the driving gross power that is to say light source is roughly constant, can avoid this kind dynamically to adjust causing adverse effect the useful life of light source by this.
See also Fig. 6 B, Fig. 6 B illustrates through the dynamic adjusted pulse-period signal Drv of above-mentioned steps (S106 and S108) " the sequential schematic diagram.Shown in Fig. 6 B, adjusted pulse-period signal Drv " difference of comparing default pulse-period signal Drv is; step S106 increases the second interval power of relative low penetration rate signal spacing LB; but be not limited to each subinterval lb1 among the relative low penetration rate signal spacing LB; lb2; voltage or the electric current of lb3 are comprehensive; critical increase, shown in Fig. 6 B, the voltage in different subintervals or electric current can be according to the adjustment (partly or comprehensively increasing) in various degree of practical application do, in the present embodiment, be voltage or the electric current that increases lb2 and lb3, but reduce voltage or the electric current of lb1, the second interval power of relative low penetration rate signal spacing LB is increased.In like manner, step S108, adjust relative high penetration signal spacing HB subinterval power separately, in the present embodiment, be voltage or the electric current that reduces hb1 and hb2, but increase voltage or the electric current of hb3, the first interval power of the relative high penetration signal spacing HB of pulse-period signal is reduced.
At last, projection display equipment 3 execution in step S110 are with pulse-period signal driving light source 30.Along with different luminance parameter judged results, the pulse-period signal of driving light source 30 herein can be through the dynamic adjusted pulse-period signal of above-mentioned steps S102～S108 (for example Drv ' among Fig. 6 A or the Drv ") among Fig. 6 B or default and unjustified pulse-period signal.
What need pay special attention to is, projection dynamic adjusting method of the present invention and the projection display equipment white picture maximum display brightness when output high brightness image can obtain to promote, and the black picture when the output low-light level shows slinkingly and show that brightness also can further reduce most, can make the bright dark contrast of image output obtain obviously to promote by this.Take a broad view of, projection dynamic adjusting method of the present invention and projection display equipment can utilize the mode of dynamic adjustment, at different image output characteristics, promote the contrast and the color saturation of its Projection Display.
In the foregoing description, first predetermined value is more than or equal to second predetermined value, and first predetermined value and second predetermined value are respectively the judgment standard value of system or user's setting.In the above-mentioned explanation, the judgement of the luminance parameter of pulse-period signal is only simply classified with first predetermined value and second predetermined value, but the present invention is not as limit.The present invention also can more be subdivided into the luminance parameter of image output two, three, four or multiregion more, the corresponding respectively mechanism that sees through in the previous embodiment of different brightness is produced different pulse-period signal, to reach more diversified application.
Claims (26)
1. projection dynamic adjusting method, be applicable to a projection display equipment, it is characterized in that this projection display equipment is in order to show image output and to comprise light source, this light source is driven by a pulse-period signal, this pulse-period signal comprises a relative high penetration signal spacing and a relative low penetration rate signal spacing, this relative high penetration signal spacing and this relative low penetration rate signal spacing have one first interval power and one second interval power respectively, and this projection dynamic adjusting method comprises the following step:
(a) judge the luminance parameter of this image output;
(b) according to this luminance parameter, with this second interval power of this first interval power of adjusting this relative high penetration signal spacing and this relative low penetration rate signal spacing at least one of them mode adjust this pulse-period signal, when wherein the two all was adjusted when this second interval power of this first interval power of this relative high penetration signal spacing and this relative low penetration rate signal spacing, the two was adjusted in reverse relatively mode; And
(c) drive this light source with this pulse-period signal.
2. projection dynamic adjusting method according to claim 1 is characterized in that this step (b) comprises the following step:
If this luminance parameter greater than first predetermined value, then increases this first interval power of this relative high penetration signal spacing of this pulse-period signal.
3. projection dynamic adjusting method according to claim 2, it is characterized in that in this step (b) by the voltage that increases this relative high penetration signal spacing and electric current at least one of them, to increase this first interval power.
4. projection dynamic adjusting method according to claim 2 is characterized in that this step (b) further comprises the following step:
If this luminance parameter less than second predetermined value, then increases this second interval power of this relative low penetration rate signal spacing of this pulse-period signal.
5. projection dynamic adjusting method according to claim 4, it is characterized in that in this step (b) by the voltage that increases this relative low penetration rate signal spacing and electric current at least one of them, to increase this second interval power.
6. projection dynamic adjusting method according to claim 4 is characterized in that in this step (b) if this luminance parameter less than this second predetermined value, further comprises the following step:
Reduce this first interval power of this relative high penetration signal spacing of this pulse-period signal.
7. projection dynamic adjusting method according to claim 6, it is characterized in that this pulse-period signal has a pulse period gross power, in this step (b) in this second interval power of this relative low penetration rate signal spacing that increases this pulse-period signal, and reduce after this first interval power of this relative high penetration signal spacing of this pulse-period signal, this pulse period gross power of this pulse-period signal remains unchanged.
8. projection dynamic adjusting method according to claim 6, it is characterized in that in this step (b) when this luminance parameter during less than this second predetermined value, by the voltage that increases this relative low penetration rate signal spacing and electric current at least one of them, to increase this second interval power, and by the voltage that reduces this relative high penetration signal spacing and electric current at least one of them, to reduce this first interval power.
9. projection dynamic adjusting method according to claim 2 is characterized in that in this step (b) if this luminance parameter greater than this first predetermined value, further comprises the following step:
Reduce this second interval power of this relative low penetration rate signal spacing of this pulse-period signal.
10. projection dynamic adjusting method according to claim 9, it is characterized in that this pulse-period signal has a pulse period gross power, in this step (b) in this first interval power of this relative high penetration signal spacing that increases this pulse-period signal, and reduce after this second interval power of this relative low penetration rate signal spacing of this pulse-period signal, this pulse period gross power of this pulse-period signal remains unchanged.
11. projection dynamic adjusting method according to claim 9, it is characterized in that in the step (b) when this luminance parameter during greater than this first predetermined value, by the voltage that increases this relative high penetration signal spacing and electric current at least one of them, to increase this first interval power, and by the voltage that reduces this relative low penetration rate signal spacing and electric current at least one of them, to reduce this second interval power.
12. projection dynamic adjusting method according to claim 4 is characterized in that this first predetermined value is more than or equal to this second predetermined value.
13. a projection display equipment in order to show image output, is characterized in that this projection display equipment comprises:
Light source;
Drive circuit, it produces a pulse-period signal to drive this light source, this pulse-period signal comprises a relative high penetration signal spacing and a relative low penetration rate signal spacing, and this relative high penetration signal spacing and this relative low penetration rate signal spacing have one first interval power and one second interval power respectively; And
Processing module, itself and this drive circuit electrically connects, this processing module is judged the luminance parameter of this image output, and according to this luminance parameter control this drive circuit with this second interval power of this first interval power of adjusting this relative high penetration signal spacing and this relative low penetration rate signal spacing at least one of them mode adjust this pulse-period signal, when wherein the two all was adjusted when this second interval power of this first interval power of this relative high penetration signal spacing and this relative low penetration rate signal spacing, the two was adjusted in reverse relatively mode.
14. projection display equipment according to claim 13, it is characterized in that when this processing module is judged this luminance parameter greater than first predetermined value then this processing module is controlled this drive circuit to increase this first interval power of this relative high penetration signal spacing.
15. projection display equipment according to claim 14, it is characterized in that when this luminance parameter during greater than this first predetermined value, this processing module by this drive circuit of control increase the voltage of this relative high penetration signal spacing and electric current at least one of them, to increase this first interval power.
16. projection display equipment according to claim 14 is characterized in that this processing module is further controlled this second interval power that this drive circuit reduces this relative low penetration rate signal spacing when this luminance parameter during greater than this first predetermined value.
17. projection display equipment according to claim 16, it is characterized in that this pulse-period signal has a pulse period gross power, control after this drive circuit increases this first interval power of this relative high penetration signal spacing and reduce this second interval power of this relative low penetration rate signal spacing when this processing module, this pulse period gross power of this pulse-period signal remains unchanged.
18. projection display equipment according to claim 16, it is characterized in that when this luminance parameter during greater than this first predetermined value, this processing module by this drive circuit of control increase the voltage of this relative high penetration signal spacing and electric current at least one of them, to increase this first interval power, and by the voltage that reduces this relative low penetration rate signal spacing and electric current at least one of them, to reduce this second interval power.
19. projection display equipment according to claim 14 is characterized in that judging this luminance parameter less than second predetermined value when this processing module that then this processing module is controlled this second interval power that this drive circuit increases this relative low penetration rate signal spacing.
20. projection display equipment according to claim 19, it is characterized in that when this luminance parameter during less than this second predetermined value, this processing module by this drive circuit of control increase the voltage of this relative low penetration rate signal spacing and electric current at least one of them, to increase this second interval power.
21. projection display equipment according to claim 19 is characterized in that this processing module is further controlled this first interval power that this drive circuit reduces this relative high penetration signal spacing when this luminance parameter during less than this second predetermined value.
22. projection display equipment according to claim 21, it is characterized in that this pulse-period signal has a pulse period gross power, control after this drive circuit increases this second interval power of this relative low penetration rate signal spacing and reduce this first interval power of this relative high penetration signal spacing when this processing module, this pulse period gross power of this pulse-period signal remains unchanged.
23. projection display equipment according to claim 21, it is characterized in that when this luminance parameter during less than this second predetermined value, this processing module by this drive circuit of control increase the voltage of this relative low penetration rate signal spacing and electric current at least one of them, to increase this second interval power, and by the voltage that reduces this relative high penetration signal spacing and electric current at least one of them, to reduce this first interval power.
24. projection display equipment according to claim 19 is characterized in that this first predetermined value is more than or equal to this second predetermined value.
25. projection display equipment according to claim 13 is characterized in that this light source produces light, this projection display equipment more comprises:
Colour wheel, it has a relative high penetration zone and a relative low penetration rate zone, this light that this light source produces is through this colour wheel, and this zone of relative low penetration rate with this, relative high penetration zone is respectively to the signal spacing of relative low penetration rate with this, this relative high penetration signal spacing that should pulse-period signal.
26. projection display equipment according to claim 25, this the relative high penetration zone that it is characterized in that this colour wheel comprises a colour mixture block, this relative low penetration rate zone comprises a pure color block, this relative high penetration signal spacing is to this colour mixture block that should colour wheel, and this relative low penetration rate signal spacing is to this pure color block that should colour wheel.
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| CN106131453A (en) * | 2016-08-30 | 2016-11-16 | Tcl集团股份有限公司 | A kind of instantaneous increasing method of projection brightness based on solid state light emitter and system |
| CN107167995A (en) * | 2017-04-26 | 2017-09-15 | 苏州佳世达光电有限公司 | Lamp source color degree compensating process and use its projection arrangement |
| CN109991799A (en) * | 2017-12-29 | 2019-07-09 | 深圳光峰科技股份有限公司 | Light-source system and projection device |
| WO2020125316A1 (en) * | 2018-12-19 | 2020-06-25 | 青岛海信激光显示股份有限公司 | Projection display apparatus and control method therefor |
| CN114257796A (en) * | 2020-09-22 | 2022-03-29 | 苏州佳世达光电有限公司 | Projection device |
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| US6453067B1 (en) * | 1997-10-20 | 2002-09-17 | Texas Instruments Incorporated | Brightness gain using white segment with hue and gain correction |
| WO2007040479A1 (en) * | 2005-09-21 | 2007-04-12 | Tte Technology, Inc. | A system and method for increasing the brightness of an image |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106131453A (en) * | 2016-08-30 | 2016-11-16 | Tcl集团股份有限公司 | A kind of instantaneous increasing method of projection brightness based on solid state light emitter and system |
| CN106131453B (en) * | 2016-08-30 | 2020-06-23 | 深圳市Tcl高新技术开发有限公司 | Projection brightness instantaneous increase method and system based on solid-state light source |
| CN107167995A (en) * | 2017-04-26 | 2017-09-15 | 苏州佳世达光电有限公司 | Lamp source color degree compensating process and use its projection arrangement |
| CN107167995B (en) * | 2017-04-26 | 2019-12-17 | 苏州佳世达光电有限公司 | Lamp source chromaticity compensation method and projection device using same |
| CN109991799A (en) * | 2017-12-29 | 2019-07-09 | 深圳光峰科技股份有限公司 | Light-source system and projection device |
| WO2020125316A1 (en) * | 2018-12-19 | 2020-06-25 | 青岛海信激光显示股份有限公司 | Projection display apparatus and control method therefor |
| CN114257796A (en) * | 2020-09-22 | 2022-03-29 | 苏州佳世达光电有限公司 | Projection device |
| CN114257796B (en) * | 2020-09-22 | 2023-12-08 | 苏州佳世达光电有限公司 | Projection device |
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