CN102316330A - Digital optical processing projector and color compensation method of bulb thereof - Google Patents
Digital optical processing projector and color compensation method of bulb thereof Download PDFInfo
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Abstract
A digital optical processing projector and a color compensation method of a bulb thereof. The digital optical processing projector comprises a projection unit, a sensing unit and a color compensation unit, wherein the projection unit comprises a bulb, a color wheel and a control module. The control module controls the energy supplied to the bulb and the color of the color wheel according to the energy waveform, so that the projection unit projects various colored lights. The sensing unit detects the quality of each color light projected by the projection unit. The color compensation unit compares the quality of each color light detected by the sensing unit with the original quality, and adjusts the energy waveform accordingly to compensate the difference of each color light.
Description
Technical field
The invention relates to the color compensation method of a kind of digital optical processing projector and bulb thereof.
Background technology
Along with the evolution of projection display technique, optical projection system and equipment have the development of highly significant within recent years.The principle of projector and transparency or lantern slide are similar, and the bulb that all is to use a high brightness is as light source, and picture is projected on white cloth curtain or the wall.With regard to know-why, more common on the market projector is high temperature polysilicon (Polysilicon) penetrating LCD (generally being referred to as liquid crystal projector) and digital optical processor (Digital Light Processing, DLP) projector at present.Wherein the know-why of digital optical processor projector is for to utilize rotary color wheel (color wheel) to be divided into the coloured light of three kinds of colors of red, green, blue with the light with light source; And then via digital micromirror elements (Digital Micromirror Device; DMD) reflection to be being projected to these coloured light on the screen, and demonstrates colored projected picture.
Wherein, The material that digital optical processor projector is adopted is all inorganic material; Therefore expose to the open air for a long time in thermal source or light source following time, still can possess good projected picture quality, and liquid crystal projector is an organic material because of the material that it adopted; Receive influence and the deterioration of context temperature, humidity easily, and then make the picture of its projection flaw occur.
Though the inorganic material that digital optical processor projector adopted can not receive influence and the deterioration of environment; But the bulb that digital optical processor projector is inner is in case aging; Still can have influence on the quality of the picture that projects, and descending luminance possibly take place, phenomenon such as color is unbalance (for example picture partially yellow).Generally the bulb specification is all bright concludeed a contract or treaty 4000 hours or above useful life, but was less than the time that it is declared usually, and the color offset phenomenon of bulb itself is just obviously visible.Because the bulb price is not striking, more changes the bulb the use cost that improves digital optical processor projector widely frequently.Therefore, how to prolong the bulb useful life of digital optical processor projector, the quality of its projected picture is real to be an important topic of this area but do not have influence on.
Summary of the invention
In view of this, the present invention provides the color compensation method of a kind of digital optical processing projector and bulb thereof, in the time of can wearing out at the bulb of digital optical processing projector, digital optical processing projector is carried out color compensation and makes its projected picture reply color balance.
The present invention proposes a kind of color compensation method of projecting camera light bulb; Be applicable to digit optical processing (DLP) projector with bulb and colour wheel; The method is to throw multiple coloured light according to an energy waveform (Waveform) earlier, and wherein said energy waveform is the definition digital optical processing projector offers bulb in a projection light time of all kinds energy.Then, detect the quality of each coloured light that digital optical processing projector throwed.At last, the quality of each coloured light that is relatively detected and the difference between original quality are adjusted energy waveform according to this, and are compensated the difference of each coloured light.
The present invention proposes a kind of color compensation method of projecting camera light bulb; Be applicable to digital optical processing projector with bulb and colour wheel; The method is earlier according at least one test pictures of energy waveform projection, and wherein said energy waveform is the definition digital optical processing projector when the multiple coloured light of projection wherein a kind of will offer the energy of bulb.Then, detect the quality of each coloured light that digital optical processing projector throwed.At last compare the quality of each coloured light that is detected and the difference between original quality again, and adjust energy waveform according to this, and compensate the difference of each coloured light.
The present invention proposes a kind of color compensation method of projecting camera light bulb; Be applicable to digital optical processing projector with bulb and colour wheel; The method is to throw multiple coloured light according to energy waveform earlier, and wherein said energy waveform is the definition digital optical processing projector offers bulb in a projection light time of all kinds energy.Then, detect the quality of each coloured light that digital optical processing projector throwed.At last compare the quality of each coloured light that is detected and the difference between original quality again, and, apply mechanically and offer digital optical processing projector according to this by the energy waveform of selecting to be suitable for to compensate the difference of each coloured light in a plurality of energy waveform.
The present invention proposes a kind of digital optical processing projector, comprises projecting cell, sensing cell and color compensation unit.Wherein projecting cell comprises bulb, colour wheel and control module.Control module offers the color of the energy and the colour wheel of bulb according to energy waveform control, makes projecting cell project multiple coloured light, and wherein said energy waveform is the definition projecting cell offers bulb in a projection light time of all kinds energy.In addition, sensing cell is in order to detect the quality of each coloured light that projecting cell throwed.The color compensation unit then can compare the quality of each coloured light that sensing cell detects and the difference between original quality, and adjusts energy waveform according to this, and compensates the difference of each coloured light.
Based on above-mentioned; The present invention utilizes the projection coloured light that detects digital optical processing projector to adjust the energy waveform figure of definition digital optical processing projector bulb; When wearing out with bulb at digital optical processing projector; To the color compensation that carries out of digital optical processing projector projection, and make projected picture reply color balance.
For letting the above-mentioned feature and advantage of the present invention can be more obviously understandable, hereinafter is special lifts embodiment, and cooperates appended graphic elaborating as follows.
Description of drawings
Fig. 1 is the calcspar of the digital optical processing projector that illustrates according to one embodiment of the invention.
Fig. 2 is the flow chart of the color compensation method of the projecting camera light bulb that illustrates according to one embodiment of the invention.
Fig. 3 is the energy waveform sketch map that illustrates according to one embodiment of the invention.
Fig. 4 is the calcspar of the digital optical processing projector that illustrates according to one embodiment of the invention.
Fig. 5 is the flow chart of the color compensation method of the projecting camera light bulb that illustrates according to one embodiment of the invention.
Fig. 6 is the flow chart of the color compensation method of the projecting camera light bulb that illustrates according to one embodiment of the invention.
Fig. 7 is the flow chart of the color compensation method of the projecting camera light bulb that illustrates according to one embodiment of the invention.
Fig. 8 is the flow chart of the color compensation method of the projecting camera light bulb that illustrates according to one embodiment of the invention.
Fig. 9 A～Fig. 9 C is the energy waveform sketch map that illustrates according to one embodiment of the invention.
Figure 10 is the energy waveform sketch map that illustrates according to one embodiment of the invention.
[main element label declaration]
100,400: digital optical processing projector
102: projecting cell 104: sensing cell
106: color compensation unit 108: input unit
110: bulb 112: colour wheel
114: control module 402: computing module
404: comparison module 406: adjusting module
408: storage element 300: energy waveform
310,1002: wavy line
S202～S206, S502～S514, S602～S606, S702～S706, S802～S812: each step of the color compensation method of the projecting camera light bulb of one embodiment of the invention
Embodiment
In order to let the user obtain the preferable quality of viewing and admiring; The present invention detects the quality of coloured light that digital optical processing projector throws; And the energy waveform of digital optical processing projector bulb energy is supplied with in adjustment definition according to this; So that because of the aging and affected coloured light of bulb can obtain corresponding color compensation, the final quality that receives coloured light by optical sensor that makes can be tried one's best near the quality of original coloured light, and the quality of said coloured light comprises brightness, colourity, saturation and spectrum etc.In order to make content of the present invention more clear, below specially lift the example that embodiment can implement as the present invention really according to this.
Fig. 1 is the calcspar of the digital optical processing projector that illustrates according to one embodiment of the invention.Please with reference to Fig. 1, the digital optical processing projector 100 of present embodiment comprises projecting cell 102, sensing cell 104, color compensation unit 106 and input unit 108.Wherein projecting cell 102 comprises bulb 110, colour wheel 112 and control module 114.Control module 114 for example is an apparatus for lighting up (Ballaster), and it couples input unit 108 and bulb 110.Control module 114 receives the data for projection that input unit 108 is imported, and lights bulb 110 according to energy waveform, so that projecting cell 102 projects the projected picture of image data.
Wherein, projecting cell 102 and sensing cell 104 can be arranged at the diverse location place apart from the user respectively, and in order to carrying out projection and light sensing function under apart from user's diverse location, and sensing cell 104 can be arranged at the position nearer apart from the user.For instance, sensing cell 104 can be configured on user's remote controller by the side of or be placed on the object of an ad-hoc location around the user, and in order to detect the coloured light that reflects by projecting cell 102 picture that throw around the user.The sense of reality that thus, just can make sensing cell 104 detected coloured light more press close to user's eyes.
In addition; 106 of color compensation unit can compare the difference of the original quality of coloured light quality that sensing cell 104 detected and coloured light; And adjust energy waveform according to both difference; Change to supply with the energy size of bulb 110, with compensation because of phenomenons such as bulb 110 aging projected picture descending luminance, the colors that produce are unbalance.
Say that at length Fig. 2 is the flow chart of the color compensation method of the projecting camera light bulb that illustrates according to one embodiment of the invention.Please be simultaneously with reference to Fig. 1 and Fig. 2, the color compensation method of present embodiment is applicable to the digital optical processing projector 100 of Fig. 1, and in order to compensation because of situations such as the aging projection coloured light brightness deterioration that is caused of bulb or color are unbalance, its detailed step is following:
At first, projecting cell 102 throws multiple coloured light (step S202) according to energy waveform, and this energy waveform offers the energy of bulb 110 in the projection light time of all kinds in order to definition projecting cell 114.
For instance, Fig. 3 is the energy waveform sketch map that illustrates according to one embodiment of the invention.Please with reference to Fig. 3; Six kinds of colors of arranging on the energy waveform 300 of present embodiment are the color that corresponds to zones of different on the colour wheel 112; When the last wavy line that illustrates 310 of Fig. 3 then is illustrated in colour wheel 112 and turns to different colours regional, 110 corresponding energy (current level) sizes that receive of bulb.In the present embodiment, suppose to be arranged with in regular turn on the colour wheel 112 colors such as red, yellow, white, blue or green, blue, green.When colour wheel 112 rotated, digital optical processing projector 400 promptly can cooperate the rotation adjustment of colour wheel 112 to offer the energy of bulb 110, uses the light that sends varying strength.When the light that is sent when bulb 110 passed a certain color on the colour wheel 112 regional, the light of other color will be by filtering, and the light that therefore passes colour wheel 112 will become the coloured light corresponding to this field color.For example, when colour wheel 112 turned to yellow area, the light that bulb 110 is sent will change sodium yellow into after passing colour wheel 112.What need explanation is, the brightness of each coloured light is proportional to the luminous intensity that bulb 110 is sent, just the energy size accepted of bulb.When the current level that offers bulb 110 was high more, the luminous intensity that bulb 110 is sent was strong more, and the brightness of coloured light is also high more; On the contrary, supply with the electric energy level of bulb 110 when low more, the luminous intensity that bulb 110 is sent more a little less than, the brightness of coloured light is also low more.
Get back to the flow process of Fig. 2, then sensing cell 104 will detect the quality (step S204) of the various coloured light that digital optical processing projector 100 throwed.At length say, sensing cell 104 can according to each regions of different colours on the colour wheel 112 put in order and ratio detects corresponding coloured light.For example, when colour wheel 112 turned to green area and makes that projecting cell 102 projects green light, sensing cell 104 just detected the quality of this green light.
Then; The difference of the original quality that the quality of color compensation unit 106 meeting comparison sensing cells, 104 detected various coloured light is corresponding with it; And adjust energy waveform according to this difference, with compensation because of the bulb 110 aging coloured light mass discrepancies (step S206) that cause.
What need explanation is that above-mentioned color compensation unit 106 can be subdivided into a plurality of elements again, to realize diversified adjustment mechanism.Fig. 4 is the calcspar of the digital optical processing projector that illustrates according to one embodiment of the invention.Please with reference to Fig. 4, in the digital optical processing projector 400 of present embodiment, color compensation unit 106 more is subdivided into computing module 402, comparison module 404 and adjusting module 406.Wherein, computing module 402 is responsible for calculating the quality of sensing cell 104 detected coloured light and the difference of its original quality.Whether the coloured light mass discrepancy degree that comparison module 404 meetings are calculated according to computing module 402 need carry out the adjustment of coloured light with decision.406 of adjusting modules are when the adjustment of comparison module 404 decisions need carrying out coloured light, are responsible for the difference of adjustment energy waveform with compensation coloured light.
Say that at length Fig. 5 is the flow chart of the color compensation method of the projecting camera light bulb that illustrates according to one embodiment of the invention.Please be simultaneously with reference to Fig. 4 and Fig. 5, the color compensation method of present embodiment is applicable to the digital optical processing projector 400 of Fig. 4, and in order to compensation because of situations such as the aging projection coloured light brightness deterioration that is caused of bulb or color are unbalance, its detailed step is following:
At first, projecting cell 102 throws multiple coloured light (step S502) according to energy waveform, and this energy waveform offers the energy of bulb 110 in the projection light time of all kinds in order to definition projecting cell 114.Then, sensing cell 104 detects the quality (step S504) of the various coloured light that digital optical processing projectors 400 are throwed.Then, computing module 402 calculates the quality of the sensing cell 104 various coloured light that detect and the difference (step S506) of its original quality.Then, comparison module 404 judges whether the difference of the original quality that coloured light quality that computing module 402 calculated is corresponding with it surpasses a threshold value (step S508).If the difference of the quality of the coloured light that detects and original quality is during above threshold value, adjusting module 406 will be adjusted and be defined in the energy that offers bulb 110 when throwing corresponding coloured light in the energy waveform, the difference (step S510) that is caused with the complementary color optical attenuation; If when the difference of the quality of the coloured light that detects and original quality does not surpass threshold value, adjusting module 406 just can not adjusted energy waveform (step S512).
For instance, suppose that the original brightness of blue light is 2000ANSI, and the threshold value of blue light brightness is 200ANSI.When comparison module 404 judges that blue light luminance difference that computing modules 402 are calculated is higher than 200ANSI (being that the blue light brightness that sensing cell 104 is measured is lower than 1800ANSI); Adjusting module 406 just can improve the current level that corresponds to blue light in the energy waveform; Make the brightness of blue light can be returned to original 2000ANSI, with the 110 aging blue light decay that caused of compensation bulb.Otherwise; When comparison module 404 judges that blue light luminance difference that computing modules 402 are calculated is lower than 200ANSI (being that the blue light brightness that sensing cell 104 is measured is higher than 1800ANSI); The amplitude that then can judge blue light brightness decay is little, and this moment, adjusting module 406 can not adjusted energy waveform yet.
Fig. 6 is the flow chart of the color compensation method of the projecting camera light bulb that illustrates according to one embodiment of the invention.Please be simultaneously with reference to Fig. 4 and Fig. 6, the difference of the color compensation method of present embodiment and the color compensation method of Fig. 2 is that present embodiment utilizes projecting cell 102 projective tests pictures to adjust energy waveform, its detailed step is following:
At first, projecting cell 102 is according to energy waveform projection at least one test pictures (step S602).Then, sensing cell 104 detects the quality (step S604) of the various coloured light that digital optical processing projectors 400 are throwed.
In detail; When the sensing cell among the step S604 104 is optical sensor (photo sensor), because optical sensor can only detect the fixedly coloured light of frequency domain, therefore in step S602; The projecting cell 102 essential a plurality of test pictures of projection in turn are to detect the quality of each coloured light.For instance, if colour wheel 112 has the zone of three kinds of different colours of red, green, blue, then three test pictures such as red entirely, the full indigo plant of projecting cell 102 projectables, Quan Lv make optical sensor can detect the quality of these three kinds of coloured light in regular turn.In addition, in another embodiment, sensing cell 104 also can be color sensor (color sensor).Because color sensor itself can be told the coloured light of different frequency domains, therefore in step S602, projecting cell 102 need only projection one complete white picture.So, the quality of each coloured light just can differentiated and detect to color sensor in step S604.
At last; After having detected the quality of coloured light, the original quality that color compensation unit 106 promptly can be corresponding with it with the quality of sensing cell 104 detected various coloured light compares, to calculate difference therebetween; And adjust energy waveform according to this difference, with the difference (step S606) of compensation coloured light.This step is similar to above-mentioned steps S206, so details repeats no more at this.
Fig. 7 is the flow chart of the color compensation method of the projecting camera light bulb that illustrates according to one embodiment of the invention.Please be simultaneously with reference to Fig. 4 and Fig. 7; The difference of the color compensation method of present embodiment and the color compensation method of Fig. 2 is; Present embodiment is when carrying out the adjustment of energy waveform; Be that the energy waveform of from a plurality of energy waveform, selecting a present optical attenuation of all kinds of the most suitable compensation is improved the coloured light quality, its detailed step is following:
At first, projecting cell 102 throws multiple coloured light (step S702) according to energy waveform.Then, sensing cell 104 detects the quality (step S704) of the various coloured light that digital optical processing projectors 400 are throwed.
At last; The difference of the original quality that the quality of color compensation unit 106 comparison sensing cells, 104 detected various coloured light is corresponding with it; And according to this difference by selecting the energy waveform that is suitable for compensating light quality difference of all kinds in a plurality of energy waveform, apply mechanically (step S706) to offer digital optical processing projector 400.At length say; Because the coloured light that sensing cell 104 is detected possibly be the direct light that is directly throwed by digital optical processing projector 400; Or by the reverberation that its projection picture reflects, therefore being necessary to be directed against these two kinds of situations provides different standards to judge the degree of coloured light decay.In addition; The aging of bulb 110 possibly caused not only a kind of decay of coloured light; In order can be under the situation that does not influence color balance to compensate, be necessary to provide multiple energy waveform situation such as to decay simultaneously in response to monochromatic light decay or polychromatic light to the comparatively serious coloured light of attenuation degree.Moreover; Digital optical processing projector 400 itself may provide multiple projection mode to user's different demands; For example color balance pattern or maximum brightness pattern; And, certainly will multiple energy waveform to be provided also to the decay of the coloured light under these projection mode, just can find out optimal energy waveform and carry out color compensation.
Above-mentioned each item factor all can have influence on the result of final color compensation; Therefore design the energy waveform of applying mechanically for digital optical processing projector 400 and also must consider various possible situation, so that the picture of digital optical processing projector 400 projections can obtain best color compensation effect.In view of the above, the present invention promptly stores multiple energy waveform in advance in the storage element 408 of digital optical processing projector 400, with the demand in response to various situation.Enumerate embodiment with next respectively to these situation, with the detailed step of explanation color compensation method of the present invention.
Situation about judging to direct light and reverberation: because direct light and catoptrical light intensity difference be apart from bigger, so the present invention is provided with a threshold value between direct light and reverberation, with as judgement direct light and catoptrical foundation.
Fig. 8 is the flow chart of the color compensation method of the projecting camera light bulb that illustrates according to one embodiment of the invention.Please be simultaneously with reference to Fig. 4 and Fig. 8; The difference of the color compensation method of present embodiment and the color compensation method of Fig. 7 is; Present embodiment is after the detection that executes various coloured light quality; Judge that also the coloured light that is detected is direct light or reverberation, and select suitable original quality numerical value to come to do comparison with the coloured light quality that is detected according to this, its detailed step is following:
At first, projecting cell 102 throws multiple coloured light (step S802) according to energy waveform.Then, sensing cell 104 detects the quality (step S804) of the various coloured light that digital optical processing projectors 400 are throwed.
Situation to the different color light compensation: owing to being not limited only to a kind of because of bulb 110 aging coloured light of decaying; Therefore a plurality of energy waveform of essential storage in the storage element 408 are used under various possible coloured light decay situations so that digital optical processing projector 400 to be provided.Wherein, the present invention can be through testing bulb 110 in advance, finding out coloured light kind and the number that it occurs decay when aging the most easily, and can to the situation of these coloured light decay respectively the design energy waveform come in response to.
For instance, Fig. 9 A～Fig. 9 C is the energy waveform sketch map that illustrates according to one embodiment of the invention.Please be simultaneously with reference to Fig. 3 and Fig. 9 A～Fig. 9 C, present embodiment is as the initial energy waveform of digital optical processing projector 400 with the energy waveform of Fig. 3.Fig. 9 A～Fig. 9 C then is respectively the decay of corresponding sodium yellow, blue light decay, and the energy waveform that situation designed that decays simultaneously of sodium yellow and blue light.Wherein, descend, can select the energy waveform of Fig. 9 A to offer digital optical processing projector 400 and apply mechanically, and can reach the color compensation of sodium yellow if sensing cell 104 detects the quality of the sodium yellow that digital optical processing projector 400 throwed.Similarly, descend if sensing cell 104 detects the quality of blue light, the energy waveform of then selecting Fig. 9 B is to carry out the color compensation of blue light; Descend simultaneously if sensing cell 104 detects the quality of sodium yellow, blue light, then can select the energy waveform of Fig. 9 C, to carry out the compensation of sodium yellow and blue light simultaneously.
Situation to multiple projection mode: digital optical processing projector 400 can have multiple different projection mode, for example color balance pattern, the brightest pattern and battery saving mode etc.To each pattern, the present invention all provides multiple different energy waveform, so that digital optical processing projector 400 can be found out suitable energy waveform and apply mechanically to the decay of the coloured light under different mode situation.
For instance; To the color balance pattern; The present invention can provide the energy waveform that is similar to Fig. 9 A～Fig. 9 C; Make that digital optical processing projector 400 can be corresponding to the decay of various coloured light under the color balance pattern, the energy waveform of selecting to be fit to is applied mechanically, and the purpose that reaches color compensation and reply color balance.
It should be noted that since the primary power waveform under the brightest pattern with the energy settings of each coloured light at the high state that can receive, so when bulb 110 wears out, the energy that the coloured light of its decay can't be again offers bulb 110 through increase compensates.The energy that can only select to lower other coloured light this moment makes the picture of digital optical processing projector 400 projections get back to color balance.
For instance, Figure 10 is the energy waveform sketch map that illustrates according to one embodiment of the invention.Please be simultaneously with reference to Fig. 4 and Figure 10; Present embodiment is that energy waveform with Fig. 4 is as the primary power waveform of digital optical processing projector 400 under the brightest pattern; This energy waveform is based under the prerequisite that color balance can keep, and shows digital optical processing projector 400 can offer bulb 110 in the projection light time of all kinds ceiling capacity (being current level).Wherein, During the mass attenuation of the red light of being throwed when digital optical processing projector 400; Because the current level of red light can't improve again; Therefore can only select wavy line 1002 conducts that Figure 10 illustrated to offer the energy waveform of bulb 110 energy by backward, and reduce, make the picture of 400 projections of digital optical processing projector can reply color balance through current level with the coloured light beyond the red light.
In sum, The present invention be directed to the coloured light that digital optical processing projector throws and detect and analyze, and adjustment offers the energy waveform of digital optical processing projector according to this, and can reach the color compensation of each coloured light.Wherein, The present invention can be through the projection different colours test pictures to realize the detection of different color light; And in the process of adjustment energy waveform; Also can from preset a plurality of energy waveform, select the energy waveform of the present optical attenuation of all kinds of the most suitable compensation, and offer digital optical processing projector and apply mechanically, and can be issued to the optimization of color compensation in the prerequisite of keeping color balance to the attenuation degree of each coloured light under the various projection mode.
Though the present invention discloses as above with embodiment; Right its is not in order to limit the present invention; Has common knowledge the knowledgeable in the technical field under any; Do not breaking away from the spirit and scope of the present invention, when doing a little change and retouching, so protection scope of the present invention is as the criterion when looking appended the claim scope person of defining.
Claims (20)
1. the color compensation method of a projecting camera light bulb is applicable to the digital optical processing projector with a bulb and a colour wheel, and this method comprises the following steps:
Throw multiple coloured light according to an energy waveform, wherein this this digital optical processing projector of energy waveform definition offers an energy of this bulb when each said coloured light of projection;
Detect a quality of each said coloured light that this digital optical processing projector throws; And
This quality of each the said coloured light that is relatively detected and the difference between an original quality are adjusted this energy waveform according to this, and are compensated this difference of each said coloured light.
2. color compensation method according to claim 1, the step of this quality of each the said coloured light that wherein detects this digital optical processing projector and throwed comprises:
According to a color alignment and the ratio of this colour wheel, when this colour wheel rotates to a color, detect quality, respectively with quality as this corresponding coloured light of this color via a light of this colour wheel projection.
3. color compensation method according to claim 1 wherein compares this quality of each the said coloured light that is detected and this difference between this original quality, adjusts this energy waveform according to this, and the step that compensates this difference of each said coloured light comprises:
According to this quality of each said coloured light and this difference between this original quality, adjust this energy that offers this bulb when being defined in each said coloured light of projection in this energy waveform, to compensate this difference of each said coloured light.
4. color compensation method according to claim 1 wherein compares this quality of each the said coloured light that is detected and this difference between this original quality, adjusts this energy waveform according to this, and the step that compensates this difference of each said coloured light comprises:
Calculate this quality of each the said coloured light that is detected and this difference between this original quality respectively;
Judge whether this difference surpasses a threshold value; And
When this difference surpasses this threshold value, offer this energy of this bulb when adjusting this coloured light that is defined in the projection correspondence in this energy waveform, to compensate this difference that this corresponding coloured light decay is caused.
5. the color compensation method of a projecting camera light bulb is applicable to the digital optical processing projector with a bulb and a colour wheel, and this method comprises the following steps:
Throw at least one test pictures according to an energy waveform, wherein offer an energy of this bulb during a kind of in the multiple coloured light of projection of this this digital optical processing projector of energy waveform definition;
Detect a quality of each said coloured light that this digital optical processing projector throws; And
This quality of each the said coloured light that is relatively detected and the difference between an original quality are adjusted this energy waveform according to this, and are compensated this difference of each said coloured light.
6. color compensation method according to claim 5, wherein according to this at least one test pictures of this energy waveform projection, and the step that detects this quality of each said coloured light that this digital optical processing projector throws comprises:
Throw the test pictures of multiple different colours according to this energy waveform; And
A color alignment and ratio according to this colour wheel; Respectively this colour wheel rotate to said color one of them the time; Utilize the quality of a light sensors via a light of this colour wheel projection; With the quality as this corresponding coloured light of this color, the test pictures of wherein said color comprises a complete red picture, a complete green picture and a complete blue picture.
7. color compensation method according to claim 5, wherein according to this at least one test pictures of this energy waveform projection, and the step that detects this quality of each said coloured light that this digital optical processing projector throws comprises:
According to this energy waveform projection one complete white picture; And
Utilize a color sensor to detect this quality of each said coloured light in this digital optical processing projector institute throw light.
8. the color compensation method of a projecting camera light bulb is applicable to the digital optical processing projector with a bulb and a colour wheel, and this method comprises the following steps:
Throw multiple coloured light according to an energy waveform, wherein this this digital optical processing projector of energy waveform definition offers an energy of this bulb when each said coloured light of projection;
Detect a quality of each said coloured light that this digital optical processing projector throws; And
This quality of each the said coloured light that is relatively detected and the difference between an original quality are suitable for compensating the energy waveform of this difference of each said coloured light according to this by selection in a plurality of energy waveform, apply mechanically and offer this digital optical processing projector.
9. color compensation method according to claim 8 wherein after the step of a quality that detects each said coloured light that this digital optical processing projector throwed, also comprises:
Whether an intensity of judging each the said coloured light that is detected surpasses a preset strength value;
If surpass this preset strength value, then judge a serve as reasons direct light of this digital optical processing projector direct projection of each the said coloured light that is detected; And
If surpass this preset strength value, then judge a reverberation of the picture reflection that this digital optical processing projector throwed of serving as reasons each the said coloured light that is detected.
10. color compensation method according to claim 9, wherein
When judging that each the said coloured light detected is served as reasons this direct light of this digital optical processing projector direct projection, this quality and its this difference between this original quality under this direct light of each the said coloured light that is relatively detected; And
When judging this reverberation of serving as reasons each the said coloured light detected picture that this digital optical processing projector throw reflecting, this quality and its this difference between this original quality under this reverberation of each said coloured light that comparison is detected.
11. color compensation method according to claim 8 also comprises:
Decay to one or more coloured light that this digital optical processing projector throwed; Said energy waveform is provided; And when the energy waveform of this difference of selecting to be suitable for to compensate each said coloured light; Calculate this quality of each the said coloured light detected this difference, from said energy waveform, select to be suitable for to compensate the energy waveform of this difference of each said coloured light according to this, apply mechanically and offer this digital optical processing projector with respect to this original quality.
12. color compensation method according to claim 11 also comprises:
Multiple projection mode to this digital optical processing projector provides corresponding at least one energy waveform respectively, and wherein said projection mode comprises a color balanced mode, the brightest pattern or a battery saving mode;
When this projection mode is this color balance pattern; Calculate this quality of each the said coloured light that is detected this difference with respect to this original quality; Select the said energy waveform under this color balance pattern according to this to be suitable for increasing this quality of each said coloured light, apply mechanically to offer this digital optical processing projector so that it gets back to the energy waveform of a color balance; And
When this projection mode is that this is during bright pattern; Calculate this quality of each the said coloured light that is detected this difference with respect to this original quality; This quality of selecting to be suitable for to reduce each said coloured light according to this said energy waveform under this brightest pattern to be reaching the energy waveform of a color balance, and offers this digital optical processing projector and apply mechanically.
13. a digital optical processing projector comprises:
One projecting cell comprises:
One bulb sends a light;
One colour wheel changes the color of this light that this bulb sends; And
One control module; Offer a color of an energy and this colour wheel of this bulb according to energy waveform control; Make this projecting cell project multiple coloured light, wherein this this projecting cell of energy waveform definition offers this energy of this bulb when each said coloured light of projection;
One sensing cell detects a quality of each said coloured light that this projecting cell throws; And
One color compensating unit, this quality of each said coloured light that relatively this sensing cell detected and the difference between an original quality are adjusted this energy waveform according to this, and compensate this difference of each said coloured light.
14. digital optical processing projector according to claim 13 also comprises:
One input unit; Import an image data to this projecting cell, with this image data of projection, wherein this control module is an apparatus for lighting up; It couples this input unit and this bulb; And receive this data for projection that this input unit is imported, and light this bulb according to this energy waveform, so that this projecting cell projects a projected picture of this image data.
15. digital optical processing projector according to claim 13, wherein this color compensation unit comprises:
One computing module calculates this quality of each said coloured light that this sensing cell detects and this difference between this original quality;
One comparison module judges whether this difference that this computing module calculates surpasses a threshold value; And
One adjusting module when this comparison module judges that this difference surpasses this threshold value, offers this energy of this bulb when adjusting this coloured light that is defined in the projection correspondence in this energy waveform, to compensate this difference that this corresponding coloured light decay is caused.
16. digital optical processing projector according to claim 13; Wherein this projecting cell throws the test pictures of multiple different colours according to this energy waveform; And this sensing cell is an optical sensor; It is a color alignment and ratio according to this colour wheel, respectively this colour wheel rotate to said color one of them the time, detect quality via a light of this colour wheel projection; With the quality as this corresponding coloured light of this color, the test pictures of wherein said color comprises a complete red picture, a complete green picture and a complete blue picture.
17. digital optical processing projector according to claim 13; Wherein this projecting cell is according to this energy waveform projection one complete white picture; And this sensing cell is a color sensor, and it detects this quality of each said coloured light in this projecting cell institute throw light.
18. digital optical processing projector according to claim 13 also comprises:
One storage element; Store multiple energy waveform; Said energy waveform is to provide to the decay of one or more coloured light that this digital optical processing projector throwed, and wherein the stored said energy waveform of this storage element is to a serve as reasons direct light of this projecting cell direct projection and provided by a reverberation of the picture reflection that this projecting cell throwed of each said coloured light that this sensing cell detected.
19. digital optical processing projector according to claim 18; Wherein this color compensation unit is according to this quality of each said coloured light that this sensing cell detected and this difference between this original quality; By the energy waveform of selecting to be suitable for to compensate this difference of each said coloured light in the stored said energy waveform of this storage element, apply mechanically and offer this projecting cell.
20. digital optical processing projector according to claim 18; Wherein the stored said energy waveform of this storage element is to provide to the multiple projection mode of this digital optical processing projector; Wherein each said projection mode is corresponding at least one energy waveform; And said projection mode comprises a color balanced mode, the brightest pattern or a battery saving mode, and
When this projection mode of this digital optical processing projector is this color balance pattern; This color compensation unit is according to this difference that is compared; Select the said energy waveform under this color balance pattern to be suitable for increasing this quality of each said coloured light, apply mechanically and offer this projecting cell so that it gets back to the energy waveform of a color balance; And
When this projection mode of this digital optical processing projector is that this is during bright pattern; This color compensation unit is according to this difference that is compared; This quality of selecting the said energy waveform under this brightest pattern to be suitable for reducing each said coloured light is applied mechanically and offer this projecting cell to reach the energy waveform of a color balance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010221564XA CN102316330A (en) | 2010-07-02 | 2010-07-02 | Digital optical processing projector and color compensation method of bulb thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010221564XA CN102316330A (en) | 2010-07-02 | 2010-07-02 | Digital optical processing projector and color compensation method of bulb thereof |
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| CN102316330A true CN102316330A (en) | 2012-01-11 |
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Application publication date: 20120111 |