CN106855679B

CN106855679B - Projection arrangement and its control method

Info

Publication number: CN106855679B
Application number: CN201510897671.7A
Authority: CN
Inventors: 黄国生; 王则钦; 李屹
Original assignee: Shenzhen Appotronics Technology Co Ltd
Current assignee: Shenzhen Appotronics Technology Co Ltd
Priority date: 2015-12-08
Filing date: 2015-12-08
Publication date: 2019-05-03
Anticipated expiration: 2035-12-08
Also published as: CN106855679A

Abstract

The invention discloses a kind of projection arrangement and its control methods, first input picture is parsed, the gray-scale intensity values of each primary colours frame image gray-scale level brightness maximum pixel in the three primary colours frame image that every frame image that obtaining input picture indicates includes, between when going out light needed for calculating each primary colours frame image according to the gray-scale intensity values of each primary colours frame image gray-scale level brightness maximum pixel, so that the ratio that the gray-scale intensity upper limit corresponding with light supply apparatus output input picture is taken time between when going out light needed for each primary colours frame is equal to the gray-scale intensity values of corresponding primary colours frame image gray-scale level brightness maximum pixel and the ratio of the gray-scale intensity upper limit, control light supply apparatus is directed to the time that corresponding primary colours frame image is emitted corresponding primary lights between when going out light according to needed for each primary colours frame image, grayscale is corresponded to less than light supply apparatus output input picture between making when the light out of corresponding primary lights The brightness upper limit take time and not less than between when going out light needed for each primary colours frame image, to reduce the electric energy loss of projection arrangement.

Description

Projection arrangement and its control method

Technical field

The present invention relates to projection art more particularly to a kind of projection arrangement and its control methods.

Background technique

With the development of electronic technology, environmental protection organization requires the Energy Efficiency Ratio of projection arrangement higher and higher, so that throwing The electric energy loss of image device is smaller more competitive.But when the brightness of projection arrangement is more than 8000 lumen-hours, monolithic DMD (Digital Micromirror Device, Digital Micromirror Device) is difficult to be further added by light conversion efficiency because of its heat consumption height, because This, needs to increase the size of monolithic DMD or uses multi-disc DMD, lead to higher cost.

As shown in Figure 1, in the prior art using fixation minor time slice (the i.e. black region turned off between two neighboring color lump Part), to reduce the electric energy loss of projection arrangement, but energy-efficient electric energy is relatively limited in this way.

Summary of the invention

In order to solve the above technical problems, the embodiment of the invention provides a kind of projection arrangement and its control method, to reduce The electric energy loss of the projection arrangement.

To solve the above problems, the embodiment of the invention provides following technical solutions:

A kind of projection arrangement, comprising:

Light supply apparatus, for being emitted three primary colours sequential light；

Image analysis unit obtains represented by the received image signal for parsing to received image signal The gray-scale intensity values and gray-scale intensity of each pixel of each primary colours frame image are maximum in the three primary colours frame image that every frame image includes The gray-scale intensity values of pixel, and each base is calculated according to the gray-scale intensity values of the gray-scale intensity maximum pixel of each primary colours frame image Needed for colour frame image go out light when between so that needed for each primary colours frame image go out light when between with the light supply apparatus export The ratio that the corresponding gray-scale intensity upper limit of the received image signal is taken time is equal to the gray-scale intensity of corresponding primary colours frame image The ratio of the gray-scale intensity values of maximum pixel and the gray-scale intensity upper limit；

Light source control device, for according to needed for each primary colours frame image go out light when between control the light supply apparatus The time of corresponding primary lights is emitted for corresponding primary colours frame image, so that the light supply apparatus is directed to corresponding primary colours frame image and goes out The time for penetrating corresponding primary lights is less than the light supply apparatus and exports the corresponding gray-scale intensity upper limit institute of the received image signal Take time and be greater than or equal to the primary colours frame image needed for go out light when between；

Light-modulating cell, for according to the gray-scale intensity values of each pixel in each primary colours frame image to three primary colours sequential light into Row modulation forms tristimulus image light according to timing.

Preferably, the light source control device includes:

First control circuit, the first control circuit include three control access in parallel, three controls in parallel Access processed and the three primary colours correspond, when for going out light according to needed for each primary colours frame image between generate its and corresponding control Signal processed；

Second control circuit, the second control circuit are used to control the light supply apparatus according to the control signal and be directed to Corresponding primary colours frame image is emitted the time of corresponding primary lights, so that the light supply apparatus is directed to corresponding primary colours frame image outgoing pair When the time for the primary lights the answered gray-scale intensity upper limit corresponding less than the light supply apparatus output received image signal is spent Between and be greater than or equal to the primary colours frame image needed for go out light when between.

Preferably, the control access includes: concatenated isolation resistance and one-way conduction diode, and drain terminal is isolated with described First metal-oxide-semiconductor of the common end electrical connection of resistance, the one-way conduction diode, wherein the grid of first metal-oxide-semiconductor and institute State image analysis unit electrical connection, source ground connection, for according to needed for each primary colours frame image go out light when between control the list To the time of conducting diode current flow；When the one-way conduction diode current flow, the second control circuit controls the light Source device is emitted three primary colours sequential light；When one-way conduction diode cut-off, the second control circuit controls the light Source device stops outgoing three primary colours sequential light.

Preferably, the second control circuit includes:

The second metal-oxide-semiconductor being electrically connected with the one-way conduction diode output, the grid of second metal-oxide-semiconductor with it is described The output end of one-way conduction diode is electrically connected, source ground connection；

The triode being electrically connected with the second metal-oxide-semiconductor drain terminal, the leakage of the base stage of the triode and second metal-oxide-semiconductor End electrical connection, collector have predeterminated voltage, and emitter is electrically connected with the light supply apparatus；

When the one-way conduction diode current flow, the second metal-oxide-semiconductor conducting, the triode ON, the light source Device is emitted three primary colours sequential light；When one-way conduction diode cut-off, the second metal-oxide-semiconductor cut-off, the triode Cut-off, the light supply apparatus stop outgoing three primary colours sequential light.

Preferably, first metal-oxide-semiconductor is enhanced field-effect tube；Second metal-oxide-semiconductor is enhanced field-effect tube；Institute Stating triode is PNP type triode.

Preferably, the light source control device further include:

First capacitor between the grid and ground of second metal-oxide-semiconductor；

Between the grid and ground of second metal-oxide-semiconductor, the first resistor in parallel with the first capacitor.

A kind of projection arrangement, comprising:

Light supply apparatus, for being emitted primary light, and the three primary colours light that primary light conversion three paths of ingredient are emitted；

Image analysis unit obtains represented by the received image signal for parsing to received image signal Each pixel gray level brightness value and gray-scale intensity maximum picture of each primary colours frame image in the three primary colours frame image that every frame image includes The gray-scale intensity values of element take the maximum value conduct pair in the gray-scale intensity values of the gray-scale intensity maximum pixel of each primary colours frame image The maximum gray brightness value of frame image is answered, and is emitted needed for calculating every frame image according to the maximum gray brightness value of every frame image former The time of beginning light, so that the time of outgoing primary light and the light supply apparatus needed for every frame image export the received image signal The ratio that the corresponding gray-scale intensity upper limit is taken time is equal to the maximum gray brightness value and the gray-scale intensity of corresponding frame image The ratio of the upper limit；

Light source control device, the time for being emitted primary light according to needed for every frame image control the light supply apparatus for The time of every frame image outgoing primary light, so that the time of light supply apparatus outgoing primary light exports less than the light supply apparatus The corresponding gray-scale intensity upper limit of the received image signal is taken time and to be greater than or equal to outgoing needed for every frame image former The time of beginning light；

Three light-modulating cells, each primary colours frame image is each in the three primary colours frame image for including according to every frame image Pixel gray level brightness value is respectively modulated three primary colours light, forms tristimulus image light, each light-modulating cell modulation one Kind primary lights.

Preferably, the light source control device includes:

First control circuit, the first control circuit include three control access in parallel, three controls in parallel Access processed and the three primary colours correspond, and the time for being emitted primary light according to needed for every frame image generates control signal；

Second control circuit, the second control circuit be used for according to the control signal control light supply apparatus for The time of every frame image outgoing primary light, so that the time of light supply apparatus outgoing primary light exports less than the light supply apparatus The corresponding gray-scale intensity upper limit of the received image signal is taken time and to be greater than or equal to outgoing needed for every frame image former The time of beginning light.

Preferably, the control access includes:

Concatenated isolation resistance and one-way conduction diode, drain terminal and the isolation resistance, the one-way conduction diode Common end electrical connection the first metal-oxide-semiconductor, wherein the grid of the metal-oxide-semiconductor is electrically connected with described image resolution unit, and source connects Ground, the time for being emitted primary light according to needed for every frame image control the time of the one-way conduction diode current flow；

When the one-way conduction diode current flow, it is original that the second control circuit controls the light supply apparatus outgoing Light；When the one-way conduction diode by when, the second control circuit controls the light supply apparatus and stops outgoing primary light.

Preferably, the second control circuit includes:

When the one-way conduction diode current flow, the second metal-oxide-semiconductor conducting, the triode ON, the light source Device is emitted primary light；When one-way conduction diode cut-off, the second metal-oxide-semiconductor cut-off, the triode shutdown, institute It states light supply apparatus and stops outgoing primary light.

Preferably, the light source control device further include:

A kind of control method of projection arrangement, this method comprises:

Received image signal is received, the received image signal is parsed, received image signal institute table is obtained The gray-scale intensity values and gray-scale intensity of each pixel of each primary colours frame image in the three primary colours frame image that the every frame image shown includes The gray-scale intensity values of maximum pixel, and calculated often according to the gray-scale intensity values of the gray-scale intensity maximum pixel of each primary colours frame image Needed for one primary colours frame image go out light when between so that needed for each primary colours frame go out light when between with the light supply apparatus export The ratio that the corresponding gray-scale intensity upper limit of the received image signal is taken time is equal to the gray-scale intensity of corresponding primary colours frame image The ratio of the gray-scale intensity values of maximum pixel and the gray-scale intensity upper limit；

The light supply apparatus is controlled between when going out light according to needed for each primary colours frame image to go out for corresponding primary colours frame image The time of corresponding primary lights is penetrated, so that being less than the light supply apparatus between when the light out of corresponding primary lights exports the input figure As the corresponding gray-scale intensity upper limit of signal take time and be greater than or equal to each primary colours frame image needed for go out light when between；

For being modulated according to the gray-scale intensity values of each pixel in each primary colours frame image to three primary colours sequential light, according to Timing forms tristimulus image light.

A kind of control method of projection arrangement, this method comprises:

Received image signal is received, the received image signal is parsed, received image signal institute table is obtained Each pixel gray level brightness value of each primary colours frame image and gray-scale intensity be most in the three primary colours frame image that the every frame image shown includes The gray-scale intensity values of big pixel, take the maximum value in the gray-scale intensity values of the gray-scale intensity maximum pixel of each primary colours frame image to make For the maximum gray brightness value of corresponding frame image, and go out needed for calculating every frame image according to the maximum gray brightness value of every frame image The time of primary light is penetrated, so that the time of outgoing primary light and the light supply apparatus needed for every frame image export the input picture The ratio that the corresponding gray-scale intensity upper limit of signal is taken time is equal to the maximum gray brightness value for corresponding to frame image and the grayscale The ratio of the brightness upper limit；

The time control light supply apparatus that primary light is emitted according to needed for every frame image is original for the outgoing of every frame image The time of light, so that the time of every frame image outgoing primary light is less than the light supply apparatus and exports the received image signal The corresponding gray-scale intensity upper limit takes time and is greater than or equal to the time of outgoing primary light needed for every frame image；

Each pixel gray level brightness value difference of each primary colours frame image in the three primary colours frame image for including according to every frame image Three primary colours light is modulated, tristimulus image light is formed.

Compared with prior art, above-mentioned technical proposal has the advantage that

Projection arrangement and its control method provided by the embodiment of the present invention, first parse input picture, obtain institute State the gray-scale intensity of each primary colours frame image in the three primary colours frame image that every frame image represented by received image signal includes most The gray-scale intensity values of big pixel, and it is each according to the calculating of the gray-scale intensity values of the gray-scale intensity maximum pixel of each primary colours frame image Needed for primary colours frame image go out light when between so that needed for each primary colours frame go out light when between with the light supply apparatus export institute It states the ratio that the corresponding gray-scale intensity upper limit of received image signal is taken time and is equal to the gray-scale intensity of corresponding primary colours frame image most The gray-scale intensity values of big pixel and the ratio of the gray-scale intensity upper limit, finally, going out light according to needed for each primary colours frame image Time controls the light supply apparatus and is directed to the time that corresponding primary colours frame image is emitted corresponding primary lights, so that corresponding primary lights When going out light between be less than the light supply apparatus export the corresponding gray-scale intensity upper limit of the received image signal take time without Less than needed for each primary colours frame image go out light when between.It can be seen that projection arrangement provided by the embodiment of the present invention and Its control method, when going out light according to needed for each primary colours frame image between control the light supply apparatus and be directed to corresponding primary colours frame image It is emitted the time of corresponding primary lights, rather than uses the light out for closing fixed minor time slice, so as to according to each input picture The required working time for going out light supply apparatus in projection arrangement described in light time adjustment, shorten the light supply apparatus to greatest extent Working time, reduce the electric energy loss of the projection arrangement.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.

Fig. 1 be the prior art projection arrangement during the work time, the song that the driving current of light supply apparatus changes over time Line schematic diagram；

Fig. 2 is the structural schematic diagram of projection arrangement provided by one embodiment of the invention；

Fig. 3 is the electrical block diagram of light source control device in projection arrangement provided by one embodiment of the invention；

Fig. 4 is the flow chart of the control method of projection arrangement provided by one embodiment of the invention；

Fig. 5 is provided by one embodiment of the invention in the projection arrangement course of work, the driving current of light supply apparatus with The curve synoptic diagram of time change；

Fig. 6 is the structural schematic diagram of projection arrangement provided by another embodiment of the present invention；

Fig. 7 is the flow chart of the control method of projection arrangement provided by another embodiment of the present invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, but the present invention can be with Implemented using other than the one described here other way, those skilled in the art can be without prejudice to intension of the present invention In the case of do similar popularization, therefore the present invention is not limited by the specific embodiments disclosed below.

As shown in Fig. 2, the embodiment of the invention provides a kind of projection arrangements, comprising:

Light supply apparatus 100, for being emitted three primary colours sequential light；

Image analysis unit 200 obtains represented by the received image signal for parsing to received image signal Every frame image include three primary colours frame image in each primary colours frame image each pixel gray-scale intensity values and gray-scale intensity most The gray-scale intensity values of big pixel, and it is each according to the calculating of the gray-scale intensity values of the gray-scale intensity maximum pixel of each primary colours frame image Needed for primary colours frame image go out light when between so that needed for each primary color image go out light when between with the light supply apparatus 100 Export the grayscale that the ratio that the corresponding gray-scale intensity upper limit of the received image signal is taken time is equal to corresponding primary colours frame image The ratio of the gray-scale intensity values of brightness maximum pixel and the gray-scale intensity upper limit；

Light source control device 300, for according to needed for each primary colours frame image go out light when between control the light source Device 100 is directed to the time that corresponding primary colours frame image is emitted corresponding primary lights, so that the light supply apparatus 100 is directed to corresponding base The colour frame image outgoing corresponding primary lights time is less than the light supply apparatus 100 and exports the corresponding grayscale of the received image signal Between the brightness upper limit is taken time and is not less than needed for (being greater than or equal to) the primary colours frame image when going out light；

Light-modulating cell 400, for according to the gray-scale intensity values of each pixel in each primary colours frame image to three primary colours timing Light is modulated, and forms tristimulus image light according to timing.

In embodiments of the present invention, the projection arrangement timesharing shows each primary colours frame image signal in its input picture, e.g., When the picture that the projection arrangement is shown is the picture signal that three kinds of primary colours are combined into, then the projection arrangement successively shows three Kind primary colours, to obtain tristimulus image light.

It should be noted that in embodiments of the present invention, the corresponding gray-scale intensity upper limit of the received image signal is institute The denotable maximum gray brightness of gradation of the corresponding image of received image signal is stated, i.e., the described received image signal is corresponding Pixel the denotable maximum gray brightness of gradation.As in one particular embodiment of the present invention, the input is schemed As the gradation of corresponding image is 8, i.e., the gray-scale intensity of the image pixel is indicated with 8 grayscale, and 8 grayscale can indicate Maximum gray brightness be 255, therefore, in this embodiment, the gray-scale intensity upper limit of described image is 255.

It should also be noted that, in embodiments of the present invention, every frame image represented by the received image signal includes Three primary colours frame image in each primary colours frame image gray-scale intensity maximum pixel gray-scale intensity values acquisition methods are as follows: to institute It states received image signal to be parsed, obtains the three primary colours frame image that every frame image represented by the received image signal includes In each primary colours frame image each pixel gray-scale intensity values, then from the received image signal indicate every frame image include Three primary colours frame image in each primary colours frame image each pixel gray-scale intensity values in filter out the received image signal institute The gray-scale intensity of the gray-scale intensity maximum pixel of each primary colours frame image in the three primary colours frame image that the every frame image indicated includes Value.

On the basis of the above embodiments, in a preferred embodiment of the invention, the light supply apparatus 100 for pair Answer primary colours frame image be emitted corresponding primary lights time be equal to the primary colours frame image needed for go out light when between, with maximum The working time for shortening the light supply apparatus 100, reduce the electric energy loss of the projection arrangement.

On the basis of the above embodiments, in one embodiment of the invention, described according to each primary colours frame image The gray-scale intensity values of gray-scale intensity maximum pixel calculate needed for each primary colours frame image go out light when between include:

Each primary colours frame figure is calculated according to the gray-scale intensity values of the gray-scale intensity maximum pixel of each primary colours frame image The ratio of the gray-scale intensity values of the gray-scale intensity maximum pixel of the picture gray-scale intensity upper limit corresponding with the received image signal；

Believed using the gray-scale intensity values of the gray-scale intensity maximum pixel of each primary colours frame image and the input picture It is bright that the ratio of number corresponding gray-scale intensity upper limit multiplied by the light supply apparatus 100 exports the corresponding grayscale of the received image signal Between when the degree upper limit takes time needed for obtaining each primary colours frame image light out.

On the basis of the above embodiments, in one embodiment of the invention, the light source control device 300 includes:

First control circuit, the first control circuit include three control access in parallel, three controls in parallel Access processed and the three primary colours correspond, when for going out light according to needed for each primary colours frame image between generate control letter Number；

The second control circuit, the second control circuit are used to control the light supply apparatus according to the control signal 100 are emitted the time of corresponding primary lights for corresponding primary colours frame image, so that the light supply apparatus is directed to corresponding primary colours frame figure Time as being emitted corresponding primary lights is less than the light supply apparatus and exports on the corresponding gray-scale intensity of the received image signal Limit take time and be greater than or equal to the primary colours frame image needed for out light when between.

As shown in figure 3, on the basis of the above embodiments, in one embodiment of the invention, the control access packet It includes:

Concatenated isolation resistance R0 and one-way conduction diode D, drain terminal and the isolation resistance R0, the one-way conduction two First metal-oxide-semiconductor M1 of the common end electrical connection of pole pipe D, wherein the grid and described image resolution unit of the first metal-oxide-semiconductor M1 200 electrical connection, source ground connection, for according to needed for each primary colours frame image go out light when between control the one-way conduction diode The time of D conducting；

When one-way conduction diode D conducting, the second control circuit controls the outgoing of light supply apparatus 100 three Primary colours sequential light；When one-way conduction diode D cut-off, the second control circuit controls the light supply apparatus 100 and stops Only it is emitted three primary colours sequential light.

Specifically, obtaining the input picture letter when described image resolution unit 200 parses received image signal The gray-scale intensity values and ash of each pixel of each primary colours frame image in the three primary colours frame image that every frame image represented by number includes The gray-scale intensity values of rank brightness maximum pixel, and the gray-scale intensity values of the gray-scale intensity maximum pixel according to each primary colours frame image Export first control signal after between calculating when going out light needed for each primary colours frame image, the first control signal by it is described every It exports from resistance R0 to the one-way conduction diode D, controls the one-way conduction diode D conducting, the second control electricity Road controls the light supply apparatus 100 and starts to work, and is emitted three primary colours sequential light；It is reached when the working time of the light supply apparatus 100 After between when going out light needed for the primary colours frame image, described image resolution unit 200 export second control signal to described first Metal-oxide-semiconductor M1, the first metal-oxide-semiconductor M1 conducting drag down the input terminal voltage of the one-way conduction diode D, described unidirectionally to lead Logical diode D cut-off, the second control circuit control the light supply apparatus 100 and stop working, and stop outgoing three primary colours timing Light.

On the basis of the above embodiments, in one embodiment of the invention, the second control circuit includes:

The second metal-oxide-semiconductor M2 being electrically connected with the one-way conduction diode D output end, the grid of the second metal-oxide-semiconductor M2 It is electrically connected with the output end of the one-way conduction diode D, source ground connection；

The triode M3 being electrically connected with the second metal-oxide-semiconductor M2 drain terminal, the base stage of the triode M3 and the 2nd MOS The drain terminal of pipe M2 is electrically connected, and collector has predeterminated voltage, and emitter is electrically connected with the light supply apparatus 100；

When one-way conduction diode D conducting, the second metal-oxide-semiconductor M2 conducting, the triode M3 is connected, described Light supply apparatus 100 is emitted three primary colours sequential light；When one-way conduction diode D cut-off, the second metal-oxide-semiconductor M2 cut-off, The triode M3 cut-off, the light supply apparatus 100 stop outgoing three primary colours sequential light.

Specifically, in one embodiment of the invention, the predeterminated voltage is 2.5V, but the present invention does not limit this It is fixed, as long as in the triode M3 conducting operating voltage can be provided to the light supply apparatus 100, so that the light source fills Set 100 start-up operations.

On the basis of the above embodiments, in one embodiment of the invention, the first metal-oxide-semiconductor M1 is enhanced field Effect pipe；The second metal-oxide-semiconductor M2 is enhanced field-effect tube；The triode M3 is PNP type triode.But the present invention is to this And without limitation, in other embodiments of the invention, the first metal-oxide-semiconductor M1, the second metal-oxide-semiconductor M2 and the triode M3 can also be other switching transistors, as long as can guarantee that the power control works normally.

Based on any of the above embodiments, in one embodiment of the invention, the light source control device 300 is gone back It include: the first capacitor C between the grid and ground of the second metal-oxide-semiconductor M2, and the grid positioned at the second metal-oxide-semiconductor M2 Between pole and ground, the first resistor R1, the first capacitor C and first resistor R1 in parallel with the first capacitor C are used for institute The signal for stating one-way conduction diode D output is filtered, the inessential signal such as removal noise signal.

Based on any of the above embodiments, in one embodiment of the invention, the drain terminal of the second metal-oxide-semiconductor M2 Second resistance R2 is provided between the base stage of the triode M3.The second resistance R2 is for reducing second metal-oxide-semiconductor When M2 is connected, the electric current of the triode M3 base stage is flowed into, when the second metal-oxide-semiconductor M2 being avoided to be connected, is supplied to three pole The electric current of pipe M3 base stage is excessive, and the triode M3 is caused to burn.

Based on any of the above embodiments, in one embodiment of the invention, the emitter of the triode M3 3rd resistor R3 is provided between ground.The 3rd resistor R3 is used to that the light source to be isolated in triode M3 conducting Voltage between 100 input terminal of device and ground guarantees that the light supply apparatus 100 can work normally.

Include since described image resolution unit 200 parses every frame image represented by the obtained received image signal Three primary colours frame image in each primary colours frame image each pixel gray-scale intensity it is not exactly the same, and the light supply apparatus 100 Working time by the received image signal represented by every frame image include three primary colours frame image in each primary colours frame figure The gray-scale intensity values decision of the gray-scale intensity maximum pixel of picture, therefore in embodiments of the present invention, the projection arrangement also needs benefit The light supply apparatus 100 is gone out according to the gray-scale intensity values of each pixel in each primary colours frame image with the light-modulating cell 400 The three primary colours sequential light penetrated is modulated, the unwanted light reflection of the three primary colours sequential light that the light supply apparatus 100 is emitted To shading regions such as sides, tristimulus image light is formed according to timing.

On the basis of the above embodiments, in one embodiment of the invention, the light-modulating cell 400 be DMD (i.e. Digital Micromirror Device, Digital Micromirror Device), but the present invention is to this and without limitation, specifically optionally and It is fixed.

Correspondingly, being applied to any of the above-described implementation the embodiment of the invention also provides a kind of control method of projection arrangement Projection arrangement provided by example, as shown in figure 4, this method comprises:

Step 101: receiving received image signal, the received image signal is parsed, the input picture is obtained In the three primary colours frame image that every frame image represented by signal includes the gray-scale intensity values of each pixel of each primary colours frame image and The gray-scale intensity values of gray-scale intensity maximum pixel, and the gray-scale intensity of the gray-scale intensity maximum pixel according to each primary colours frame image Between value calculates when going out light needed for each primary colours frame image, wherein between when going out light needed for each primary colours frame with the light Source device 100 exports the ratio that the corresponding gray-scale intensity upper limit of the received image signal is taken time and is equal to corresponding primary colours frame figure The ratio of the gray-scale intensity values of the gray-scale intensity maximum pixel of picture and the gray-scale intensity upper limit；

Step 102: controlling the light supply apparatus 100 between when going out light according to needed for each primary colours frame image and be directed to corresponding base Colour frame image is emitted the time of corresponding primary lights, so that being less than the light supply apparatus 100 between when the light out of corresponding primary lights Export the corresponding gray-scale intensity upper limit of the received image signal take time and not less than (being greater than or equal to) it is described each Needed for primary colours frame image go out light when between；

Step 103: three primary colours sequential light is modulated according to the gray-scale intensity values of each pixel in each primary colours frame image, Tristimulus image light is formed according to timing.

It should be noted that in embodiments of the present invention, the corresponding gray-scale intensity upper limit of the received image signal is institute The denotable maximum gray brightness of gradation of the corresponding image of received image signal is stated, i.e., the described received image signal is corresponding Pixel the denotable maximum gray of gradation it is bright.Such as in one particular embodiment of the present invention, the input picture The gradation of corresponding image is 8, i.e., the gray-scale intensity of the image pixel is indicated with 8 grayscale, and 8 grayscale are denotable Maximum gray brightness is 255, and therefore, in this embodiment, the gray-scale intensity upper limit of described image is 255.

Each primary colours frame figure is calculated according to the gray-scale intensity values of the gray-scale intensity maximum pixel of each primary colours frame image The ratio of the gray-scale intensity of the gray-scale intensity maximum pixel of the picture gray-scale intensity upper limit corresponding with the received image signal；

As shown in figure 5, Fig. 5 is shown in the projection arrangement course of work provided by the embodiment of the present invention, light supply apparatus The curve synoptic diagram that driving current changes over time；Wherein, black region represents the time that the light supply apparatus stops working.From As can be seen that interval time is between adjacent pixel in the projection arrangement course of work provided by the embodiment of the present invention in Fig. 5 Dynamic change, rather than fixed value, so as to light supply apparatus described in the output image reasonable arrangement according to the projection arrangement Working time, shorten the working time of the light supply apparatus 100 to greatest extent, reduce the projection arrangement electric energy damage Consumption.

From the above mentioned it is found that projection arrangement provided in an embodiment of the present invention and its control method, first carry out input picture Parsing, obtains each primary colours frame image in the three primary colours frame image that every frame image represented by the received image signal includes The gray-scale intensity values of gray-scale intensity maximum pixel, and the gray-scale intensity of the gray-scale intensity maximum pixel according to each primary colours frame image Between value calculates when going out light needed for each primary colours frame image so that between when going out light needed for each primary colours frame with the light source Device 100 exports the ratio that the corresponding gray-scale intensity upper limit of the received image signal is taken time and is equal to corresponding primary colours frame image Gray-scale intensity maximum pixel gray-scale intensity values and the gray-scale intensity upper limit ratio, finally, according to each primary colours frame figure The light supply apparatus 100, which is controlled, between when as required light out is directed to the time that corresponding primary colours frame image is emitted corresponding primary lights, So that being less than the light supply apparatus between when the light out of corresponding primary lights exports the corresponding gray-scale intensity of the received image signal Between the upper limit is taken time and is not less than needed for each primary colours frame image when going out light, so that the embodiment of the present invention is mentioned The projection arrangement and its control method of confession, can according to needed for each primary colours frame image go out light when between control the light supply apparatus 100 are emitted the time of corresponding primary lights for corresponding primary colours frame image, i.e., when going out light according to needed for each input picture between adjust The working time of light supply apparatus 100 in the projection arrangement is saved, rather than uses the light out for closing fixed minor time slice, with maximum limit The working time of the shortening light supply apparatus 100 of degree, reduce the electric energy loss of the projection arrangement.

As shown in fig. 6, the embodiment of the invention also provides another projection arrangements, comprising:

Light supply apparatus 100, for being emitted primary light, and the three primary colours that primary light conversion three paths of ingredient are emitted Light；

Image analysis unit 200 obtains represented by the received image signal for parsing to received image signal Every frame image include three primary colours frame image in each primary colours frame image each pixel gray level brightness value and gray-scale intensity it is maximum The gray-scale intensity values of pixel take the maximum value conduct in the gray-scale intensity values of the gray-scale intensity maximum pixel of each primary colours frame image The maximum gray brightness value of corresponding frame image, and be emitted needed for calculating every frame image according to the maximum gray brightness value of every frame image The time of primary light, so that the time of outgoing primary light and the light supply apparatus 100 needed for every frame image export the input figure As the ratio the time required to the corresponding gray-scale intensity upper limit of signal is equal to the maximum gray brightness value and the ash of corresponding frame image The ratio of the rank brightness upper limit；

Light source control device 300, the time for being emitted primary light according to needed for every frame image control the light supply apparatus 100 are emitted every frame image the time of primary light, so that the time that the light supply apparatus 100 is emitted primary light is less than the light Source device 100 exports the corresponding gray-scale intensity upper limit of the received image signal and takes time and be not less than every frame image institute The time of primary light need to be emitted；

Three light-modulating cells 400, each primary colours frame image in the three primary colours frame image for including according to every frame image Each intensity gray scale brightness value the three primary colours light is modulated respectively, formed tristimulus image light, each light-modulating cell 400 one primary colours of modulation.

It should be noted that in embodiments of the present invention, the projection arrangement divides spatial display every frame figure in synchronization Each primary colours frame image for including as in, such as in one particular embodiment of the present invention, every frame image includes three primary colours frame image, In the projection arrangement when showing the frame image, segment space shows that the first primary colours frame image, segment space show the second base Colour frame image, segment space show that third primary colours frame image obtains three primary colours then again by three primary colours frame image superposition to together Image.

On the basis of the above embodiments, in one embodiment of the invention, the light supply apparatus 100 is emitted primary light Time be equal to described image needed for outgoing primary light time, to shorten the work of the light supply apparatus 100 to greatest extent Time reduces the electric energy loss of the projection arrangement.

On the basis of the above embodiments, in one embodiment of the invention, the maximum ash according to every frame image The time that rank brightness value calculates outgoing primary light needed for every frame image includes:

According to the maximum gray brightness value of every frame image calculate the maximum gray brightness value of every frame image with it is described defeated Enter the ratio of the corresponding gray-scale intensity upper limit of picture signal；

Utilize the maximum gray brightness value gray-scale intensity upper limit corresponding with the received image signal of every frame image Ratio modulate the corresponding gray-scale intensity upper limit of the received image signal multiplied by the light-modulating cell 400 and taken time, obtain To the time for being emitted primary light needed for every frame image.

Second control circuit, the second control circuit are used to control the light supply apparatus 100 according to the control signal For the time of every frame image outgoing primary light, so that the time of every frame image outgoing primary light is less than the light supply apparatus The corresponding gray-scale intensity upper limit of the 100 output received image signals takes time and is not less than and (is greater than or equal to) and is described every The time of outgoing primary light needed for frame image.

Concatenated isolation resistance R0 and one-way conduction diode D, drain terminal and the isolation resistance R0, the one-way conduction two First metal-oxide-semiconductor M1 of the common end electrical connection of pole pipe D, wherein the grid and described image resolution unit of the first metal-oxide-semiconductor M1 200 electrical connections, source ground connection, the time for being emitted primary light according to needed for every frame image generate control signal；

When one-way conduction diode D conducting, the second control circuit controls the light supply apparatus 100 and is emitted original Beginning light；When one-way conduction diode D cut-off, the second control circuit controls the light supply apparatus 100 and stops outgoing Primary light.

Specifically, obtaining the maximum of every frame image when described image resolution unit 200 parses received image signal Gray-scale intensity values, and when going out light needed for the frame image is calculated according to the maximum gray brightness value of the frame image between after output First control signal, the first control signal are exported by the isolation resistance R0 to the one-way conduction diode D, control The one-way conduction diode D conducting, the second control circuit control the light supply apparatus 100 and start to work, be emitted original Light；After between when the working time of the light supply apparatus 100, which reaches, goes out light needed for the primary colours frame image, described image parsing is single Member 200 exports second control signal to the first metal-oxide-semiconductor M1, the first metal-oxide-semiconductor M1 conducting, by two pole of one-way conduction The input terminal voltage of pipe D drags down, and the one-way conduction diode D cut-off, the second control circuit controls the light supply apparatus 100 stop working, and stop outgoing primary light.

When one-way conduction diode D conducting, the second metal-oxide-semiconductor M2 conducting, the triode M3 is connected, described Light supply apparatus 100 is emitted primary light；When one-way conduction diode D cut-off, the second metal-oxide-semiconductor M2 cut-off, described three Pole pipe M3 cut-off, the light supply apparatus 100 stop outgoing primary light.

Include since described image resolution unit 200 parses every frame image represented by the obtained received image signal Three primary colours frame image in each primary colours frame image each pixel gray-scale intensity it is not exactly the same, and the light supply apparatus 100 Working time determine that therefore in embodiments of the present invention, the projection arrangement is also needed by the maximum gray brightness value of every frame image Each primary colours frame image is each in the three primary colours frame image to include according to every frame image using three light-modulating cells 400 Pixel gray level brightness value is respectively modulated three primary colours light, the three primary colours that the light supply apparatus 100 outgoing primary light is formed Unwanted light is reflected into the shading regions such as side in light, forms tristimulus image light, each light-modulating cell 400 modulation one Kind primary lights.

On the basis of the above embodiments, in one embodiment of the invention, the light-modulating cell 400 is liquid crystal Show panel, but the present invention is to this and without limitation, specifically depends on the circumstances.

Based on any of the above embodiments, in a preferred embodiment of the invention, the light supply apparatus 100 wraps It includes: light source and colour wheel structure, wherein the light source is emitted blue laser, is provided with yellow fluorescent powder in the colour wheel structure, institute When stating the work of light supply apparatus 100, a part of blue light excitation yellow fluorescent powder generates yellow light in the blue laser of the light source outgoing, The yellow light is broken down into feux rouges and green light, and a part of blue light is scattered, and forms feux rouges, green light and blue light three primary colours light, divides three Channel outgoing, is modulated by three light-modulating cells 400 respectively.In other embodiments of the invention, the light supply apparatus 100 is gone back Can form feux rouges, green light and blue light three primary colours light by other means, the present invention to this and without limitation, specifically optionally and It is fixed.

Correspondingly, being applied to any of the above-described implementation the embodiment of the invention also provides a kind of control method of projection arrangement Projection arrangement provided by example, as shown in fig. 7, this method comprises:

Step 201: receiving received image signal, the received image signal is parsed, the input picture is obtained Each pixel gray level brightness value and grayscale of each primary colours frame image in the tristimulus image that every frame image includes represented by signal The gray-scale intensity values of brightness maximum pixel take in the gray-scale intensity values of the gray-scale intensity maximum pixel of each primary colours frame image most Maximum gray brightness value of the big value as corresponding frame image, and every frame image is calculated according to the maximum gray brightness value of every frame image The time of required outgoing primary light, wherein the time of outgoing primary light and the light supply apparatus 100 needed for every frame image export institute State the maximum gray brightness value that the ratio that the corresponding gray-scale intensity upper limit of received image signal is taken time is equal to corresponding frame image With the ratio of the gray-scale intensity upper limit；

Step 202: the time that primary light is emitted according to needed for every frame image controls the light supply apparatus 100 for every frame figure As the time of outgoing primary light, so that the time of every frame image outgoing primary light is less than the light supply apparatus 100 and exports institute The corresponding gray-scale intensity upper limit of received image signal is stated to take time and be not less than and (be greater than or equal to) needed for every frame image It is emitted the time of primary light；

Step 203: each pixel gray level of each primary colours frame image is bright in the three primary colours frame image for including according to every frame image Angle value is respectively modulated three primary colours light, forms tristimulus image light.

From the above mentioned it is found that projection arrangement and its control method provided by the embodiment of the present invention, first to input picture into Row parsing, obtains each primary colours frame image in the three primary colours frame image that every frame image represented by the received image signal includes Each pixel gray level brightness value and gray-scale intensity maximum pixel gray-scale intensity values, take the gray-scale intensity of each primary colours frame image most Maximum gray brightness value of the maximum value as corresponding frame image in the gray-scale intensity values of big pixel, most further according to every frame image Big gray-scale intensity values calculate the time of outgoing primary light needed for every frame image, so that the time of outgoing primary light needed for every frame image With the light supply apparatus 100 export ratio that the corresponding gray-scale intensity upper limit of the received image signal is taken time be equal to it is corresponding The ratio of the maximum gray brightness value of frame image and the gray-scale intensity upper limit, finally, the outgoing according to needed for every frame image is original The time of light controls the light supply apparatus 100 for the time of every frame image outgoing primary light, so that every frame image outgoing The time of primary light exports the corresponding gray-scale intensity upper limit of the received image signal less than the light supply apparatus 100 and is taken time And not less than the time of outgoing primary light needed for (being greater than or equal to) described every frame image, so that institute of the embodiment of the present invention The projection arrangement and its control method of offer, can according to needed for every frame image go out light when between control the light supply apparatus 100 It is emitted the time of primary light, i.e., goes out light supply apparatus 100 in projection arrangement described in light time adjustment according to needed for each input picture Working time, rather than use that closes fixed minor time slice to go out light, to shorten the work of the light supply apparatus 100 to greatest extent Make the time, reduces the electric energy loss of the projection arrangement.

Various pieces are described in a progressive manner in this specification, and what each some importance illustrated is and other parts Difference, same and similar part may refer to each other between various pieces.

The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention It is not intended to be limited to embodiment illustrated herein, and is to fit to consistent with the principles and novel features disclosed in this article Widest scope.

Claims

1. a kind of projection arrangement characterized by comprising

Image analysis unit obtains every frame represented by the received image signal for parsing to received image signal The gray-scale intensity values and gray-scale intensity maximum pixel of each pixel of each primary colours frame image in the three primary colours frame image that image includes Gray-scale intensity values, and calculate each primary colours frame according to the gray-scale intensity values of the gray-scale intensity maximum pixel of each primary colours frame image Needed for image go out light when between so that needed for each primary colours frame image go out light when between and the light supply apparatus output described in The gray-scale intensity that the ratio that the corresponding gray-scale intensity upper limit of received image signal is taken time is equal to corresponding primary colours frame image is maximum The ratio of the gray-scale intensity values of pixel and the gray-scale intensity upper limit；

Light source control device, when for going out light according to needed for each primary colours frame image between control the light supply apparatus and be directed to Corresponding primary colours frame image is emitted the time of corresponding primary lights, so that the light supply apparatus is directed to corresponding primary colours frame image outgoing pair When the time for the primary lights the answered gray-scale intensity upper limit corresponding less than the light supply apparatus output received image signal is spent Between and be greater than or equal to the primary colours frame image needed for go out light when between；

Light-modulating cell, for being adjusted according to the gray-scale intensity values of each pixel in each primary colours frame image to three primary colours sequential light System forms tristimulus image light according to timing.

2. projection arrangement according to claim 1, which is characterized in that the light source control device includes:

First control circuit, the first control circuit include three control access in parallel, and three control in parallel is logical Road and the three primary colours correspond, when for going out light according to needed for each primary colours frame image between generate its corresponding control letter Number；

Second control circuit, the second control circuit are used to control the light supply apparatus for correspondence according to the control signal Primary colours frame image is emitted the time of corresponding primary lights, so that the light supply apparatus is corresponding for corresponding primary colours frame image outgoing The time of primary lights be less than the light supply apparatus export the corresponding gray-scale intensity upper limit of the received image signal take time and More than or equal to needed for the primary colours frame image go out light when between.

3. projection arrangement according to claim 2, which is characterized in that the control access includes: concatenated isolation resistance The first MOS being electrically connected with one-way conduction diode, drain terminal with the common end of the isolation resistance, the one-way conduction diode Pipe, wherein the grid of first metal-oxide-semiconductor is electrically connected with described image resolution unit, source ground connection, for according to each primary colours The time of the one-way conduction diode current flow is controlled between when going out light needed for frame image；

When the one-way conduction diode current flow, the second control circuit controls the light supply apparatus and is emitted three primary colours timing Light；When one-way conduction diode cut-off, the second control circuit controls the light supply apparatus and stops outgoing three primary colours Sequential light.

4. projection arrangement according to claim 3, which is characterized in that the second control circuit includes:

The second metal-oxide-semiconductor being electrically connected with the one-way conduction diode output, the grid of second metal-oxide-semiconductor and described unidirectional The output end of conducting diode is electrically connected, source ground connection；

The drain terminal electricity of the triode being electrically connected with the second metal-oxide-semiconductor drain terminal, the base stage of the triode and second metal-oxide-semiconductor Connection, collector have predeterminated voltage, and emitter is electrically connected with the light supply apparatus；

When the one-way conduction diode current flow, the second metal-oxide-semiconductor conducting, the triode ON, the light supply apparatus It is emitted three primary colours sequential light；When one-way conduction diode cut-off, the second metal-oxide-semiconductor cut-off, the triode cut-off, The light supply apparatus stops outgoing three primary colours sequential light.

5. projection arrangement according to claim 4, which is characterized in that first metal-oxide-semiconductor is enhanced field-effect tube；Institute Stating the second metal-oxide-semiconductor is enhanced field-effect tube；The triode is PNP type triode.

6. projection arrangement according to claim 4, which is characterized in that the light source control device further include:

7. a kind of projection arrangement characterized by comprising

Image analysis unit obtains every frame represented by the received image signal for parsing to received image signal Each pixel gray level brightness value and gray-scale intensity maximum pixel of each primary colours frame image in the three primary colours frame image that image includes Gray-scale intensity values take the maximum value in the gray-scale intensity values of the gray-scale intensity maximum pixel of each primary colours frame image as corresponding frame The maximum gray brightness value of image, and primary light is emitted needed for calculating every frame image according to the maximum gray brightness value of every frame image Time so that time and the light supply apparatus output received image signal of outgoing primary light needed for every frame image are corresponding The ratio taken time of the gray-scale intensity upper limit be equal to corresponding frame image maximum gray brightness value and the gray-scale intensity upper limit Ratio；

Light source control device, the time for being emitted primary light according to needed for every frame image control the light supply apparatus for every frame Image is emitted the time of primary light, so that the time of light supply apparatus outgoing primary light is less than described in light supply apparatus output The corresponding gray-scale intensity upper limit of received image signal takes time and is greater than or equal to needed for every frame image to be emitted primary light Time；

Three light-modulating cells, each pixel of each primary colours frame image in the three primary colours frame image for including according to every frame image Gray-scale intensity values are respectively modulated three primary colours light, form tristimulus image light, each light-modulating cell modulates a kind of base Coloured light.

8. projection arrangement according to claim 7, which is characterized in that the light source control device includes:

First control circuit, the first control circuit include three control access in parallel, and three control in parallel is logical Road and the three primary colours correspond, and the time for being emitted primary light according to needed for every frame image generates control signal；

Second control circuit, the second control circuit are used to control the light supply apparatus for every frame according to the control signal Image is emitted the time of primary light, so that the time of light supply apparatus outgoing primary light is less than described in light supply apparatus output The corresponding gray-scale intensity upper limit of received image signal takes time and is greater than or equal to needed for every frame image to be emitted primary light Time.

9. projection arrangement according to claim 8, which is characterized in that the control access includes:

The public affairs of concatenated isolation resistance and one-way conduction diode, drain terminal and the isolation resistance, the one-way conduction diode First metal-oxide-semiconductor of end electrical connection altogether, wherein the grid of first metal-oxide-semiconductor is electrically connected with described image resolution unit, and source connects Ground, the time for being emitted primary light according to needed for every frame image control the time of the one-way conduction diode current flow；

When the one-way conduction diode current flow, the second control circuit controls the light supply apparatus and is emitted primary light；When The one-way conduction diode by when, the second control circuit controls the light supply apparatus and stops outgoing primary light.

10. projection arrangement according to claim 9, which is characterized in that the second control circuit includes:

When the one-way conduction diode current flow, the second metal-oxide-semiconductor conducting, the triode ON, the light supply apparatus It is emitted primary light；When one-way conduction diode cut-off, the second metal-oxide-semiconductor cut-off, the triode shutdown, the light Source device stops outgoing primary light.

11. projection arrangement according to claim 10, which is characterized in that first metal-oxide-semiconductor is enhanced field-effect tube； Second metal-oxide-semiconductor is enhanced field-effect tube；The triode is PNP type triode.

12. projection arrangement according to claim 11, which is characterized in that the light source control device further include:

13. a kind of control method of projection arrangement, which is characterized in that this method comprises:

Received image signal is received, the received image signal is parsed, is obtained represented by the received image signal The gray-scale intensity values and gray-scale intensity of each pixel of each primary colours frame image are maximum in the three primary colours frame image that every frame image includes The gray-scale intensity values of pixel, and each base is calculated according to the gray-scale intensity values of the gray-scale intensity maximum pixel of each primary colours frame image Between when going out light needed for colour frame image, so that exporting the input with light supply apparatus between when going out light needed for each primary colours frame The ratio that the corresponding gray-scale intensity upper limit of picture signal is taken time is equal to the gray-scale intensity maximum pixel of corresponding primary colours frame image Gray-scale intensity values and the gray-scale intensity upper limit ratio；

The light supply apparatus is controlled between when going out light according to needed for each primary colours frame image is directed to corresponding primary colours frame image outgoing pair The time for the primary lights answered, so that being less than the light supply apparatus between when the light out of corresponding primary lights exports the input picture letter Number corresponding gray-scale intensity upper limit take time and between being greater than or equal to needed for each primary colours frame image when going out light；

Three primary colours sequential light is modulated according to the gray-scale intensity values of each pixel in each primary colours frame image, is formed according to timing Tristimulus image light.

14. a kind of control method of projection arrangement, which is characterized in that this method comprises:

Received image signal is received, the received image signal is parsed, is obtained represented by the received image signal Each pixel gray level brightness value and gray-scale intensity maximum picture of each primary colours frame image in the three primary colours frame image that every frame image includes The gray-scale intensity values of element take the maximum value conduct pair in the gray-scale intensity values of the gray-scale intensity maximum pixel of each primary colours frame image The maximum gray brightness value of frame image is answered, and is emitted needed for calculating every frame image according to the maximum gray brightness value of every frame image former The time of beginning light, so that the time of outgoing primary light needed for every frame image is corresponding with the light supply apparatus output received image signal The ratio taken time of the gray-scale intensity upper limit be equal to corresponding frame image maximum gray brightness value and the gray-scale intensity upper limit Ratio；

The time that primary light is emitted according to needed for every frame image controls the light supply apparatus for every frame image outgoing primary light Time corresponds to so that the time of every frame image outgoing primary light is less than the light supply apparatus output received image signal The gray-scale intensity upper limit take time and be greater than or equal to every frame image needed for outgoing primary light time；

Each pixel gray level brightness value of each primary colours frame image is respectively to three in the three primary colours frame image for including according to every frame image Primary lights are modulated, and form tristimulus image light.