CN102662295A - Method and device for adjusting projection display screen size of projector - Google Patents
Method and device for adjusting projection display screen size of projector Download PDFInfo
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- CN102662295A CN102662295A CN2012101562740A CN201210156274A CN102662295A CN 102662295 A CN102662295 A CN 102662295A CN 2012101562740 A CN2012101562740 A CN 2012101562740A CN 201210156274 A CN201210156274 A CN 201210156274A CN 102662295 A CN102662295 A CN 102662295A
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Abstract
The invention discloses a method and a device for adjusting a projection display screen size of a projector. In the method and the device for adjusting the projection display screen provided by the invention, the present environmental light brightness of the present service environment are obtained in real time; and then the size of the present projection display screen is adjusted in real time according to the correspondence of the obtained present environmental light brightness and the predetermined environmental light brightness to the size of the projection display screen. The method and the device for adjusting the projection display screen provided in the invention are capable of changing the projection display screen size according to the intensity of the environmental light.
Description
Technical field
The present invention relates to the regulation technology of projection display apparatus, particularly a kind of method and apparatus of regulating the projection display picture size of projector equipment.
Background technology
In most existing projector equipment product, generally can regulate the size of the projection display picture of projector equipment.For example, in the prior art, a kind of projector according to environment size adjustment picture size and brightness has been proposed.In this projector; Can detect the distance at rear of distance and this projector to this projector in the place ahead of this projector to this projector, and according to the brightness of this projector of distance adjustment at the rear of the distance in the place ahead of this projector to this projector and this projector to this projector.
Though projector equipment of the prior art can be accomplished the picture of large-size and show; But in actual application; Because projector equipment is under different application environments, different environment light; Requirement to display effect is also different, and the external environment light intensity in the projection process is very big to the influence of Projection Display.For example, under the display environment of extraneous high light, it is very poor that the display effect of projection can become, if do not change the size of projection display picture, will make the beholder can't see institute's content displayed in the projection display picture clearly.In addition, can know that in the bigger scene of brightness, if the size of projection display picture is less, then display effect can be better according to general user experience; And in the darker scene of brightness, if the size of projection display picture is bigger, then display effect can be better.
But; In the big or small method and apparatus of the adjusting projection display picture of above-mentioned prior art; The size of projection display picture and the adjusting of brightness are to regulate according to the size of environment for use; And do not consider of the influence of environment light intensity to the size of projection display picture, therefore can't change the size of projection display picture according to the environment light intensity.In addition, in projector equipment, the user can not change relevant parameter by the projection factory settings in the variation of the projection display picture in the above-mentioned projector, can not set habitual watching mode.Because different users has the different customs of watching, and does not have unified standard, therefore projector equipment of the prior art is not generally all considered user's custom, and the optimization that causes different users can not obtain the individual is experienced.
Summary of the invention
According to the present invention, a kind of method and apparatus of regulating the projection display picture size is provided, can change the size of projection display picture according to the environment light intensity.
According to an aspect of the present invention, a kind of method of regulating the projection display picture size of projector equipment is provided, this method comprises: the current environmental light brightness of obtaining the current environment for use of said projector equipment in real time; Come the size of the current projection display picture of real-time regulated according to the corresponding relation of the size of the current environmental light brightness of being obtained and preset environmental light brightness and projection display picture.
Wherein, the corresponding relation of said size according to the current environmental light brightness of being obtained and preset environmental light brightness and projection display picture comes the size of the current projection display picture of real-time regulated to comprise: in having the ambient brightness scope of N brightness shelves, confirm and the corresponding brightness shelves of current environmental light brightness; According to the corresponding relation of determined brightness shelves, confirm and regulate the size of said current projection display picture with the size of brightness shelves of presetting and projection display picture; Wherein, N is more than or equal to 1 and smaller or equal to the integer of the difference of the full-size of projection display picture and minimum dimension.
Wherein, In having the ambient brightness scope of N brightness shelves, confirm with the corresponding brightness shelves of current environmental light brightness before; Said method further comprises: after the stationkeeping of said projector equipment, the corresponding ambient brightness scope of current environment for use of selection and said projector equipment is as the current environment brightness range from preset ambient brightness scope.
Wherein, After the stationkeeping of said projector equipment; The corresponding ambient brightness scope of current environment for use of selection and said projector equipment is as before the current environment brightness range from preset ambient brightness scope, and said method also further comprises: k possible environment for use to projector equipment detects in advance; According to testing result setting and corresponding k ambient brightness scope of a said k environment for use, and the brightness in each ambient brightness scope is divided into N brightness shelves; Wherein, k is the number of the possible environment for use of said projector equipment, and N is the number of the brightness shelves in each ambient brightness scope, and k is a natural number.
Wherein, saidly brightness in each ambient brightness scope is divided into N brightness shelves comprises: the brightness in the ambient brightness scope on average is divided into N brightness shelves.
Wherein, saidly brightness in each ambient brightness scope is divided into N brightness shelves comprises: N brightness shelves that the brightness in the ambient brightness scope are divided into preset size.
Wherein, In having the ambient brightness scope of N brightness shelves, confirm with the corresponding brightness shelves of current environmental light brightness before; And after the stationkeeping of said projector equipment; The corresponding ambient brightness scope of current environment for use of selection and said projector equipment is as after the current environment brightness range from preset ambient brightness scope; This method also further comprises: obtain the current distance between said projector equipment and the Projection Display face, confirm the range of size of said projection display picture according to said current distance; According to the range of size of said projection display picture, confirm the size of the pairing projection display picture of each brightness shelves in the said current environment brightness range.
Wherein, confirm that according to said current distance the range of size of said projection display picture comprises:, calculate the minimum dimension and the full-size of said projection display frame according to the projection ratio of current distance of being obtained and projector equipment.
Wherein, Range of size according to said projection display picture; The size of confirming the pairing projection display picture of each brightness shelves in the said current environment brightness range comprises: when said current environment brightness range has N brightness shelves, in the range of size of said projection display picture, directly be provided with and said N the brightness shelves size of N projection display picture one to one.
Wherein, Range of size according to said projection display picture; The size of confirming the pairing projection display picture of each brightness shelves in the said current environment brightness range comprises: when said current environment brightness range has N brightness shelves; According to the output brightness and the pairing ambient brightness of each brightness shelves of contrast, projector equipment, calculate and said N the brightness shelves size of N projection display picture one to one.
Wherein, said method further comprises: in real time the value of said N is adjusted, and the value of adjusted N is stored in the projector equipment; In Projection Display thereafter, confirm current projection display picture size again with the value of adjusted N.
Wherein, Said method further comprises: use the projection display picture size of said projector equipment according to user under said current environmental light brightness, the correspondence setting of the projection display picture size that said current environmental light brightness and user are used is stored in the projector equipment for watching mode commonly used; When said projector equipment is used once more, directly confirm current projection display picture size according to the watching mode of being stored commonly used.
Wherein, Range of size according to said projection display picture; The size of confirming the pairing projection display picture of each brightness shelves in the said current environment brightness range comprises: when said current environment brightness range has N brightness shelves, the size of S projection display picture is set in the range of size of said projection display picture; According to the ratio X of S and N, confirm the size of the pairing projection display picture of each brightness shelves in the said current environment brightness range one by one; Wherein, S is the integer greater than N, and S by near the represented maximum integer of the number of bits of N.
Wherein, Said ratio X according to S and N; The size of confirming the pairing projection display picture of each brightness shelves in the said current environment brightness range one by one comprises: according to the ratio X of S and N, confirm that i the pairing projection display picture of brightness shelves is of a size of the size of [iX] individual projection display picture; Wherein, " [] " expression rounds operation, i=1, and 2,3 ..., N.
Wherein, Corresponding relation according to the size of the current environmental light brightness of being obtained and preset environmental light brightness and projection display picture comes the size of the current projection display picture of real-time regulated to comprise: according to the corresponding relation of the size of said current environmental light brightness and preset environmental light brightness and projection display picture, the focal length that the zoom amount of confirming to send to the zoom stepper motor of said projector equipment to change said zoom lens through the zoom stepper motor is with the size of the projection display picture that changes said projector equipment.
According to another aspect of the present invention, a kind of device of regulating the projection display picture size of projector equipment is provided, this device comprises surround lighting acquisition module, processor module and zoom stepper motor; Wherein, said surround lighting acquisition module obtains the current environmental light brightness of the current environment for use of said projector equipment in real time, and the current environmental light brightness of being obtained is sent to said processor module; Said processor module sends the zoom instructions that carries moving step length information according to the corresponding relation of the size of said current environmental light brightness and preset environmental light brightness and projection display picture to said zoom stepper motor; Said zoom stepper motor is according to the focal length of the zoom lens in the change of the moving step length information in the said zoom instructions projector equipment, to regulate the size of said current projection display picture.
Wherein, Said processor module sends zoom instructions according to said current environmental light brightness to said zoom stepper motor and comprises: said processor module has in the current environment brightness range of N brightness shelves to be confirmed and the corresponding brightness shelves of current environmental light brightness; And, send zoom instructions to said zoom stepper motor according to the corresponding relation of determined brightness shelves with the size of brightness shelves of presetting and projection display picture; Wherein, N is more than or equal to 1 and smaller or equal to the integer of the difference of the full-size of projection display picture and minimum dimension.
Wherein, also can comprise in the device of said adjusting projection display picture size: storer is used to store preset ambient brightness scope; Said processor module also is used for after the stationkeeping of projector equipment, and the corresponding ambient brightness scope of current environment for use of selection and said projector equipment is as the current environment brightness range in the ambient brightness scope of from said storer, storing.
Wherein, said storer also is further used for storing the value by the real-time adjusted N of said processor module; Said processor module; Also be further used in the current environment brightness range, confirming and the corresponding brightness shelves of current environmental light brightness again according to the value of adjusted N; And, send zoom instructions to said zoom stepper motor according to the corresponding relation of determined brightness shelves with the size of brightness shelves of presetting and projection display picture.
Wherein, Said storer also is further used for being stored in user under the said current environmental light brightness and uses said current environmental light brightness and the correspondence setting of the projection display picture size that the user uses of the said formation of projection display picture size of said projector equipment to be watching mode commonly used; Said processor module also is further used for according to the watching mode of being stored in the storer commonly used, sends zoom instructions to said zoom stepper motor.
Wherein, said device further comprises: distance-measurement module is used to measure the current distance of said projector equipment and projection display picture, and said current distance is sent to said processor module; Said processor module also is further used for confirming according to said current distance the range of size of projection display picture; And be used for range of size according to said projection display picture, confirm the size of the pairing projection display picture of each brightness shelves in the said current environment brightness range.
Visible by technique scheme; In the method and apparatus of adjusting projection display picture size in the present invention; Owing to be provided with one or more ambient brightness scopes in advance; Therefore after the stationkeeping of projector equipment, can from preset ambient brightness scope, select an ambient brightness scope as the current environment brightness range, again according to the current distance between this projector equipment and the Projection Display face; Confirm the size of the pairing projection display picture of each brightness shelves in the current environment brightness range; And finally can confirm current projection display picture size according to the current environmental light brightness of current environment for use, therefore make the projection display picture size of projector equipment to change automatically, thereby realized regulating automatically the purpose of projection display picture size according to ambient light intensity according to the variation of environmental light brightness; Make viewing effect obtain optimization, improved user's Experience Degree.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art.Obviously, the accompanying drawing in below describing only is some embodiments of the present invention, for those of ordinary skills, can also obtain other embodiment and accompanying drawing thereof according to these accompanying drawing illustrated embodiments.
Fig. 1 is a process flow diagram of regulating the method for projection display picture size in the embodiment of the invention;
Fig. 2 is the schematic flow sheet of a kind of implementation of step 102 in the embodiment of the invention;
Fig. 3 is for being the synoptic diagram of N brightness shelves with the ambient brightness scope division in the embodiment of the invention;
Fig. 4 is a synoptic diagram of confirming the range of size of projection display picture in the embodiment of the invention;
Fig. 5 is the size of projection display picture in the embodiment of the invention and the corresponding synoptic diagram of brightness shelves;
Fig. 6 is a structural representation of regulating the device of projection display picture size in the embodiment of the invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, to further explain of the present invention.
In order to solve the problem that can't change the size of projection display picture that exists in the prior art, in technical scheme of the present invention, a kind of method and apparatus of regulating the projection display picture of projector equipment has been proposed according to the environment light intensity.
Fig. 6 shows the structural representation of regulating the device of projection display picture size in the embodiment of the invention.Referring to Fig. 6, the device 600 of the projection display picture size of the adjusting projector equipment in the present embodiment comprises: surround lighting acquisition module 601, processor module 602 and zoom stepper motor 603.
Surround lighting acquisition module 601 obtains the current environmental light brightness of the current environment for use of projector equipment in real time, and the current environmental light brightness of being obtained is sent to processor module 602.Processor module 602 sends the zoom instructions that carries moving step length information according to the corresponding relation of the size of the current environmental light brightness of projector equipment and preset environmental light brightness and projection display picture to zoom stepper motor 603.Zoom stepper motor 603 changes the focal length of the zoom lens in the projector equipment according to the moving step length information in the zoom instructions that receive, with the size of the current projection display picture of regulating projector equipment.Zoom stepper motor 603 changes the zoom lens of projector equipment according to moving step length information focal length can adopt prior art, repeats no more at this.
Further; In preferred embodiment of the present invention; Processor module 602 sends zoom instructions according to the corresponding relation of the size of current environmental light brightness and preset environmental light brightness and projection display picture to said zoom stepper motor 603 and comprises: processor module 602 has in the current environment brightness range of N brightness shelves to be confirmed and the corresponding brightness shelves of current environmental light brightness; And, send zoom instructions to zoom stepper motor 603 according to the corresponding relation of determined brightness shelves with the size of brightness shelves of presetting and projection display picture.
In preferred embodiment of the present invention, also can comprise storer 604 in the device of said adjusting projection display picture size.The preset ambient brightness scope of storer 604 storages.After the stationkeeping of projector equipment, the corresponding ambient brightness scope of current environment for use of selection and projector equipment is as the current environment brightness range in the ambient brightness scope that processor module 602 is stored from storer 604.
In preferred embodiment of the present invention, the user can also readjust the value of N through processor module 602, and the value of adjusted N is stored in storer 604.After the value of N is adjusted; Processor module 602 is confirmed and the corresponding brightness shelves of current environmental light brightness in the current environment brightness range according to the value of adjusted N again; And, send zoom instructions to zoom stepper motor 603 according to the corresponding relation of determined brightness shelves with the size of brightness shelves of presetting and projection display picture.
Among the present invention, N is the brightness stepping value in the ambient brightness scope under the projector equipment environment for use, and N is a natural number.In preferred embodiment of the present invention, the value of said N can preestablish according to practical situations.For example, the value that can set N according to the range of size and the preset picture dimension variable quantity of this projection display frame.
For instance, the range of size that can establish projection display frame is [Z
Min, Z
Max], the picture dimension variable quantity is h, wherein, and Z
MinBe the minimum dimension of projection display frame, Z
MaxBe the full-size of projection display frame, then the value of N is:
Wherein, " [] " expression rounds operation.The value of h can preestablish according to practical situations, and h is more than or equal to the picture dimension variation least unit h of projector equipment
MinTherefore, can know that the span of N is according to above-mentioned formula:
For example, work as Z
Min=40 cun, Z
Max=100 cun, and during h=60 cun, then N=1 promptly only is provided with 1 brightness shelves; Work as Z
Min=40 cun, Z
Max=100 cun, and during h=10 cun, then N=6 promptly is provided with 6 brightness shelves; And work as Z
Min=40 cun, Z
Max=100 cun, and h=h
MinIn the time of=1 cun, then N=60 promptly can be provided with 60 brightness shelves at most.Therefore, the span of N is at this moment: 1≤N≤60.
In preferred embodiment of the present invention, the user can use watching mode always according to the Preferences of oneself.Particularly, each client is according to the preference of oneself, under the certain environment luminance brightness, selects to be suitable for the size of the projection display picture of oneself watching.After the size of user's selected projection display picture that is fit to oneself according to environmental light brightness, the corresponding relation between the size of the projection display picture that said environmental light brightness and user select is stored in the storer watching mode commonly used as this user.When this user used projector equipment next time, processor module 602 can send zoom instructions to said zoom stepper motor 603 according to this user's who is stored in the storer 604 watching mode commonly used.
Further, in preferred embodiment of the present invention, the device of regulating the projection display picture size further comprises distance-measurement module 605.Distance-measurement module 605 is measured the current distance of projector equipment and Projection Display face, and current distance is sent to said processor module 602.According to received current distance; Processor module 602 is confirmed the range of size of projection display picture; And, confirm the size of the pairing projection display picture of each brightness shelves in the said current environment brightness range according to the range of size of the projection display picture of confirming.
In preferred embodiment of the present invention, the device of regulating the projection display picture of projector equipment can be arranged within the projector equipment, also can be arranged on outside the projector equipment.
The device of describing the projection display picture of using adjusting projector equipment of the present invention in detail is below regulated the concrete grammar of the projection display picture of projector equipment.
Fig. 1 shows the process flow diagram of regulating the method for projection display picture size in the embodiment of the invention.As shown in Figure 1, in step 101, obtain the current environmental light brightness of the current environment for use of projector equipment.
Preferable; In specific embodiment of the present invention; Can use the luminance sensor on the projector equipment, and detect, thereby obtain the current environmental light brightness of current environment for use in real time according to predetermined measuring period the current environment for use of projector equipment being carried out environmental light brightness.Wherein, the time span of said measuring period can preestablish, and can adjust the time span of this measuring period in real time.
Next, in step 102, according to the corresponding relation of the size of the current environmental light brightness of being obtained and preset environmental light brightness and projection display picture, the size of the current projection display picture of real-time regulated projector equipment.
Owing in step 101, obtained the current environmental light brightness of projector equipment, therefore in this step, can regulate the size of current projection display picture according to the current environmental light brightness of being obtained.Particularly; The current environmental light brightness that processor module 602 obtains according to luminance sensor; And from the corresponding relation of the size of preset environmental light brightness and projection display picture, determine the size of the pairing projection display picture of current environmental light brightness, determine the moving step length information that zoom instructions comprised that will send to zoom stepper motor 603.Thereby zoom stepper motor 603 is regulated the size that projection display picture is of a size of the pairing projection display picture of current environmental light brightness according to the zoom lens of moving step length information adjustment projector equipment.
In addition, in projector equipment, the focal length of zoom lens can change in preset zooming range.When the focal length of zoom lens changes, corresponding change also will take place in the size of the projection display picture of projector equipment thereupon.For example, when the focal length of zoom lens becomes big, the size of projection display picture will diminish; When the focal length of zoom lens diminishes, then the size of projection display picture will become big.
Therefore, preferable, in specific embodiment of the present invention, the size of regulating the current projection display picture of projector equipment can be: use zoom stepper motor 603 to regulate the focal length of the zoom lens of projector equipment, thereby change the size of current projection display picture.
In above-mentioned step 101～102; Because processor module 602 can be determined the moving step length information that zoom instructions comprised that will send to zoom stepper motor 603 according to the corresponding relation of the size of the current environmental light brightness of the current environment for use of projector equipment and preset environmental light brightness and projection display picture; Make zoom stepper motor 603 to move and regulate current projection display picture size, therefore make the projection display picture size of projector equipment to change automatically according to the variation of environmental light brightness to drive zoom lens according to moving step length information.For example, when environmental light brightness became big, the projection display picture size of projector equipment can diminish automatically; When environmental light brightness diminished, then the projection display picture size can become greatly automatically, thereby had realized regulating automatically according to ambient light intensity the purpose of projection display picture size, made viewing effect obtain optimization, had improved user's Experience Degree.
Preferable, in specific embodiment of the present invention, step 102 can realize in several ways.For example, as shown in Figure 2, in preferred embodiment of the present invention,, in having the current environment brightness range of N brightness shelves, confirm and the corresponding brightness shelves of current environmental light brightness in step 201.
In specific embodiment of the present invention, have N brightness shelves in the said current environment brightness range, and all corresponding corresponding brightness range of each brightness shelves.Wherein, the value of N can preestablish according to practical situations.
Owing in step 101, obtained current environmental light brightness; Therefore in this step, can in the current environment brightness range, search; Find and the corresponding brightness shelves of current environmental light brightness, thus in the current environment brightness range, confirm one with the corresponding brightness shelves of the current environmental light brightness of being obtained.
In step 202,, confirm and regulate the size of current projection display picture according to the corresponding relation of determined brightness shelves with the size of brightness shelves of presetting and projection display picture.
In specific embodiment of the present invention, the corresponding relation of the size of each brightness shelves and projection display picture in the current environment brightness range can be set in advance.Therefore; According to determined brightness shelves in this corresponding relation and the step 201; Can confirm size with the corresponding projection display picture of said brightness shelves; Thereby the size of the current projection display picture of scalable makes the size with the corresponding projection display picture of determined brightness shelves become the size of current projection display picture.
Preferable; In specific embodiment of the present invention; Before said step 201; Can further include: step 201A, after the stationkeeping of projector equipment, the corresponding ambient brightness scope of current environment for use of selection and said projector equipment is as the current environment brightness range from preset ambient brightness scope.
Owing to have only after the stationkeeping of projector equipment; Could fully confirm the current environment for use of this projector equipment; Therefore; In specific embodiment of the present invention, will be after the stationkeeping of projector equipment, the corresponding ambient brightness scope of current environment for use of selection and this projector equipment is as the current environment brightness range from preset one or more ambient brightness scopes.
Projector equipment generally can use under multiple environment for use, and for example, said environment for use can be: meeting room environment, home environment or teaching environment etc.Environmental light brightness scope under the different environments for use is generally inequality.Therefore, preferable, in specific embodiment of the present invention, can before said step 201A, be provided with one or more in advance and the corresponding ambient brightness scope of environment for use for this projector equipment.
So; Before step 201A; Can be in advance detect,, and the brightness in each ambient brightness scope is divided into N brightness shelves according to testing result setting and corresponding k ambient brightness scope of a said k environment for use to k possible environment for use of projector equipment.Wherein, k is the number of the possible environment for use of projector equipment, and N is the number of the brightness shelves in each ambient brightness scope; K is the integer more than or equal to 1, and the value of said k and N can be provided with according to practical situations in advance.
Preferable, in specific embodiment of the present invention, said j ambient brightness scope can be expressed as [A
j, B
j], 1≤j≤k wherein, A
jThe brightness minimum value of representing j ambient brightness scope, B
jThe brightness maximal value of representing j ambient brightness scope.
For example, can detect the residing home environment of projector equipment through using the brightness collecting device, the brightness maximal value that obtains in this home environment according to testing result is L
Max(for example, L
Max=300Lx), the brightness minimum value is 0, then the ambient brightness scope of this home environment can be expressed as [0, L
Max].In like manner, can be provided with in advance and k the corresponding k of an environment for use ambient brightness scope.
In addition, as shown in Figure 3, in specific embodiment of the present invention, can also the brightness in the said ambient brightness scope be divided into N brightness shelves, and that concrete division methods can have is multiple.
For example, can the brightness in the ambient brightness scope on average be divided into N brightness shelves, promptly the brightness range size of each the brightness shelves in N brightness shelves is all identical.For instance, suppose with the ambient brightness scope of above-mentioned home environment [0, L
Max] on average be divided into N brightness shelves, then the 1st brightness shelves be [0, L
Max/ N], the 2nd brightness shelves are [L
Max/ N, 2L
Max/ N] ..., N brightness shelves are [(N-1) L
Max/ N, L
Max].
Again for example, can the brightness in the ambient brightness scope be divided into N brightness shelves of preset size according to actual needs.Specifically; (wherein, Lx is a unit of illuminance when the ambient brightness scope of above-mentioned home environment is [0,300Lx]; Said illumination refers to the value of brightness divided by area); Because the illumination of 50Lx is darker for people's subjective feeling, therefore can the 1st brightness shelves be made as [0,50Lx]; Can the brightness range of [50Lx, 150Lx] be divided into 10 equal-sized brightness shelves then, promptly the size of the brightness range of each brightness shelves is 10Lx; Then can the brightness range of [150Lx, 300Lx] be divided into 8 brightness shelves, the size of the brightness range of wherein preceding 7 brightness shelves is 20Lx, and the size of the brightness range of last brightness shelves is 10Lx.Therefore, through above-mentioned operation, can be 19 brightness shelves with the ambient brightness scope division of above-mentioned home environment.
To sum up can know, before step 201A, can be provided with in advance and k the corresponding k of an environment for use ambient brightness scope, and the brightness in each ambient brightness scope is divided into N brightness shelves.Therefore, after the stationkeeping of projector equipment, just can from preset one or more ambient brightness scopes, select corresponding ambient brightness scope as the current environment brightness range according to the current environment for use of said projector equipment.Special, in specific embodiment of the present invention, only be provided with 1 ambient brightness scope if be provided with in advance, promptly k=1 then can directly use this ambient brightness scope that is provided with in advance as the current environment brightness range.
The method of stating has in the use been selected from k ambient brightness scope after the current environment brightness range, gets final product execution in step 201, in the current environment brightness range, confirms and the corresponding brightness shelves of current environmental light brightness.
Preferable, before said step 202, after the said step 201A, can further include: step 202A, obtain the current distance between this projector equipment and the Projection Display face, confirm the range of size of projection display picture according to said current distance.
In this step, can obtain the current distance between this projector equipment and the Projection Display face earlier, for example, can use the distance-measuring device on this projector equipment to measure the current distance between this projector equipment and the Projection Display face; Then, can confirm the range of size [Z of this projection display frame according to the current distance of being obtained
Min, Z
Max], wherein, Z
MinBe the minimum dimension of said projection display frame, Z
MaxFull-size for said projection display frame.
Preferable; In the specific embodiment of the invention; As shown in Figure 4; Saidly confirm that according to the current distance of being obtained the range of size of this projection display frame can be: according to the projection ratio of current distance of being obtained and projector equipment, calculate the minimum dimension and the full-size of this projection display frame, thereby obtain the range of size of said projection display frame.
Specifically, the projection of said projector equipment ratio is meant: the ratio of the width of projector distance and projection display picture.As shown in Figure 4, establishing projector distance is f, and the width of projection display picture is l, when the value of projection ratio and f is known, can calculate and the width l of this projection than corresponding projection display picture according to projection ratio and f.And since the length of projection display picture and the ratio of width generally all fix; For example; Ratio is 4: 3 or 16: 9 etc., therefore can obtain the length and the area of projection display picture according to the width l of projection display picture, thereby can know the size of projection display picture.Wherein, in the specific embodiment of the invention, the size of said projection display picture can be the area of projection display picture, also can be the length and the width of projection display picture.
In addition, because the focal length of the zoom lens of projector equipment can change in preset zooming range, so the projection of projector equipment is a value range than also, has a minimum projection than comparing with maximum projection; So, in the specific embodiment of the invention, can throw than the minimum dimension Z that calculates said projection display frame with maximum according to the minimum projection ratio of current distance and above-mentioned projector equipment
MinWith full-size Z
MaxThereby the range of size that obtains said projection display frame is more than or equal to Z
MinAnd smaller or equal to Z
MaxConcrete computing method repeat no more at this.
Step 202B according to the range of size of said projection display picture, confirms the size of the pairing projection display picture of each brightness shelves in the said current environment brightness range.
After the range of size of said projection display picture, can confirm the size of the pairing projection display picture of each brightness shelves in the said current environment brightness range according to the range of size of said projection display picture.
In the specific embodiment of the invention, can use several different methods to confirm the size of the pairing projection display picture of each brightness shelves.To be that example describes below with two kinds of methods.
First method:
When the current environment brightness range has N brightness shelves, in the range of size of said projection display picture, directly be provided with and said N the brightness shelves size of N projection display picture one to one.
Specifically, as shown in Figure 5, establish the current environment brightness range and have N brightness shelves; And the equal and opposite in direction of the brightness range of N brightness shelves, and the range of size of said projection display picture is [40 a cun, 100 cun]; The size of N projection display picture then can directly be set in the range of size of projection display picture; For example, 100 cun, 95 cun, 90 cun ..., 40 cun etc., and make 100 cun the size of projection display picture corresponding to the 1st brightness shelves in the current environment brightness range; The size of 95 cun projection display picture is corresponding to the 2nd brightness shelves in the current environment brightness range; The size of 90 cun projection display picture is corresponding to the 3rd brightness shelves in the current environment brightness range ..., the size of 40 cun projection display picture is corresponding to N brightness shelves in the current environment brightness range.
Second method:
When the current environment brightness range has N brightness shelves,, calculate and said N the brightness shelves size of N projection display picture one to one according to the output brightness and the pairing ambient brightness of each brightness shelves of contrast, projector equipment.
Specifically, in projector equipment, contrast=(illumination+ambient light illumination of projected picture)/ambient light illumination, the size of the output brightness/projection display picture of the illumination=projector equipment of projected picture.Because the contrast of projector equipment is a fixed value; The output brightness of projector equipment also is fixed value; And the pairing ambient light illumination of each brightness shelves also is a determined value; Therefore, according to the output brightness and the pairing ambient brightness of each brightness shelves of contrast, projector equipment, can calculate and said N the brightness shelves size of N projection display picture one to one.
By on can know; In the method for above-mentioned adjusting projection display picture size, owing to be provided with one or more ambient brightness scopes in advance, therefore after the stationkeeping of projector equipment; Can from preset ambient brightness scope, select an ambient brightness scope as the current environment brightness range; According to the current distance between this projector equipment and the Projection Display face, confirm the size of the pairing projection display picture of each brightness shelves in the current environment brightness range again, and finally can confirm current projection display picture size according to the current environmental light brightness of current environment for use; Therefore make the projection display picture size of projector equipment to change automatically according to the variation of environmental light brightness; For example, when environmental light brightness became big, the projection display picture size can diminish automatically; And when environmental light brightness diminished, then the projection display picture size can become greatly automatically, thereby had realized regulating automatically according to ambient light intensity the purpose of projection display picture size, made viewing effect obtain optimization, had improved user's Experience Degree.
Further, in order to look after the custom of watching of different user better, in specific embodiment of the present invention, the user can adjust the value of said N in real time, and the value of adjusted N is stored in the projector equipment; In Projection Display thereafter, the value of adjusted N is confirmed current projection display picture size again.
In specific embodiment of the present invention; Can also be stored in the projection display picture size that user under the environmental light brightness uses, and the correspondence setting between the size of the projection display picture that said environmental light brightness and user are selected is that user's watching mode commonly used is stored in the projector equipment.When this projector equipment is used by this user once more, can directly confirm current projection display picture size at first according to the watching mode of being stored commonly used, thereby the better optimize viewing effect improves user's Experience Degree.
Further; Because the variation of surround lighting generally is a change procedure more slowly, rather than a violent change procedure, therefore; When the projection display picture size of projector equipment changes with the variation of surround lighting; Can design the gradual process of a picture, thereby make that the change procedure of projection display picture size is more level and smooth and soft, and the problem that the variation of lofty property takes place the projection display picture size can not occur.
Specifically, in specific embodiment of the present invention, said step 202B can realize through the mode that is described below:
When the current environment brightness range has N brightness shelves, the size of S projection display picture is set in the range of size of said projection display picture; According to the ratio X of S and N, confirm the size of the pairing projection display picture of each brightness shelves in the said current environment brightness range one by one.Wherein, S is the integer greater than N.Among the present invention, the value of S must could be implemented the variation of N shelves greater than the value of N.Because S calculates according to binary figure place,, perhaps be the number of bits represented maximum integer bigger than said number of bits so to be number of bits represented near the maximum integer of N for the S value.For example, if N is 60, then getting S is that 6 scale-of-two are 64, and perhaps value is the integer 128 that 7 number of bits are represented, the variation that can cover N fully.
Preferable, in specific embodiment of the present invention, the size of the pairing projection display picture of each brightness shelves can be in said definite one by one said current environment brightness range:
Confirm that i the pairing projection display picture of brightness shelves is of a size of the size of [iX] individual projection display picture; Wherein, " [] " expression rounds operation, i=1, and 2,3 ..., N.
Preferable, in specific embodiment of the present invention, said to round operation can be the operation that rounds up, and also can be to round operation downwards.
For example, when the current environment brightness range has N=15 brightness shelves, the size of S=32 projection display picture can be set in the range of size of said projection display picture.Then, according to ratio X=2.13 of S and N, can confirm the size of the pairing projection display picture of each brightness shelves in the said current environment brightness range one by one.
For instance; When said rounding being operating as when operation of rounding up, the 1st brightness shelves are corresponding to the size of the 3rd projection display picture, and the 2nd brightness shelves are corresponding to the size of the 5th projection display picture; ...; The 7th brightness shelves are corresponding to the size of the 15th projection display picture, and the 8th brightness shelves are corresponding to the size of the 18th projection display picture ...; The 14th brightness shelves are corresponding to the size of the 30th projection display picture, and the 15th brightness shelves are corresponding to the size of the 32nd projection display picture.
When said round to be operating as round when operation downwards, the 1st brightness shelves are corresponding to the size of the 2nd projection display picture, the 2nd brightness shelves are corresponding to the size of the 4th projection display picture; ...; The 7th brightness shelves are corresponding to the size of the 14th projection display picture, and the 8th brightness shelves are corresponding to the size of the 17th projection display picture ...; The 14th brightness shelves are corresponding to the size of the 29th projection display picture, and the 15th brightness shelves are corresponding to the size of the 31st projection display picture.
Because the number of the size of projection display picture is greater than the number of brightness shelves; And when the size of projection display picture changes; The size of projection display picture will change step by step; For example, when above-mentioned rounding is operating as the operation that rounds up, and current environment brightness is when the 1st brightness shelves change to the 2nd brightness shelves; The size of projection display picture is not the size that directly directly changes to the 5th projection display picture from the size of the 3rd projection display picture; But, change to the size of the 5th projection display picture again, thereby can make the variation of size of whole projection display picture become very level and smooth earlier from the size of 4 projection display picture of change in size to the of the 3rd projection display picture.
Further, in specific embodiment of the present invention, when current environmental light brightness generation acute variation, will before the change in size of projection display picture, will send information to the user; When the user confirms to change, when perhaps not receiving user's confirmation in the given time, carry out the variation of the size of projection display picture again.Through above-mentioned steps, can be when environmental light brightness generation acute variation, determine whether to carry out the variation of the size of projection display picture according to user's indication, thereby respected the user's viewing custom, improved user's Experience Degree.
To sum up can know; In the method and apparatus of the adjusting projection display picture size that is provided in the present invention, owing to be provided with one or more ambient brightness scopes in advance, therefore after the stationkeeping of projector equipment; Can from preset ambient brightness scope, select an ambient brightness scope as the current environment brightness range; According to the current distance between this projector equipment and the Projection Display face, confirm the size of the pairing projection display picture of each brightness shelves in the current environment brightness range again, and finally can confirm current projection display picture size according to the current environmental light brightness of current environment for use; Therefore make the projection display picture size of projector equipment to change automatically according to the variation of environmental light brightness; For example, when environmental light brightness became big, the projection display picture size can diminish automatically; And when environmental light brightness diminished, then the projection display picture size can become greatly automatically, thereby had realized regulating automatically according to ambient light intensity the purpose of projection display picture size, made viewing effect obtain optimization, had improved user's Experience Degree.And, owing to the user can adjust the value of said N in real time, and the value of adjusted N is stored in the projector equipment, thereby the better optimize viewing effect improves user's Experience Degree.In addition, because the size greater than the projection display picture of the number of brightness shelves can also be set, therefore can make the variation of size of whole projection display picture become very level and smooth; In addition, when environmental light brightness generation acute variation, also can determine whether to carry out the variation of the size of projection display picture according to user's indication, thereby respect the user's viewing custom, further improve user's Experience Degree.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.All within spirit of the present invention and principle, any modification of being done, be equal to replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. method of regulating the projection display picture size of projector equipment, this method comprises:
Obtain the current environmental light brightness of the current environment for use of said projector equipment in real time;
Come the size of the current projection display picture of real-time regulated according to the corresponding relation of the size of the current environmental light brightness of being obtained and preset environmental light brightness and projection display picture.
2. the method for claim 1, the corresponding relation of said size according to the current environmental light brightness of being obtained and preset environmental light brightness and projection display picture comes the size of the current projection display picture of real-time regulated to comprise:
In having the ambient brightness scope of N brightness shelves, confirm and the corresponding brightness shelves of current environmental light brightness;
According to the corresponding relation of determined brightness shelves with the size of brightness shelves of presetting and projection display picture, confirm and regulate the size of said current projection display picture,
Wherein, N is more than or equal to 1 and smaller or equal to the integer of the difference of the full-size of projection display picture and minimum dimension.
3. method as claimed in claim 2, confirm in the said ambient brightness scope with N brightness shelves with the corresponding brightness shelves of current environmental light brightness before, this method also further comprises:
After the stationkeeping of said projector equipment, the corresponding ambient brightness scope of current environment for use of selection and said projector equipment is as the current environment brightness range from preset ambient brightness scope.
4. method as claimed in claim 3; After the stationkeeping of said projector equipment; The corresponding ambient brightness scope of current environment for use of selection and said projector equipment is as before the current environment brightness range from preset ambient brightness scope, and this method also further comprises:
K possible environment for use to projector equipment detects in advance;
According to testing result setting and corresponding k ambient brightness scope of a said k environment for use, and the brightness in each ambient brightness scope is divided into N brightness shelves;
Wherein, k is the number of the possible environment for use of said projector equipment, and N is the number of the brightness shelves in each ambient brightness scope, and k is a natural number.
5. method as claimed in claim 3; In having the ambient brightness scope of N brightness shelves, confirm with the corresponding brightness shelves of current environmental light brightness before; And after the stationkeeping of said projector equipment; The corresponding ambient brightness scope of current environment for use of selection and said projector equipment is as after the current environment brightness range from preset ambient brightness scope, and this method also further comprises:
Obtain the current distance between said projector equipment and the Projection Display face, confirm the range of size of said projection display picture according to said current distance;
According to the range of size of said projection display picture, confirm the size of the pairing projection display picture of each brightness shelves in the said current environment brightness range.
6. method as claimed in claim 2, this method further comprises:
In real time the value of said N is adjusted, and the value of adjusted N is stored in the projector equipment;
In Projection Display thereafter, confirm current projection display picture size again with the value of adjusted N.
7. the method for claim 1, this method further comprises:
Use the projection display picture size of said projector equipment according to user under said current environmental light brightness, the correspondence setting of the projection display picture size that said current environmental light brightness and user are used is stored in the projector equipment for watching mode commonly used;
When said projector equipment is used once more, directly confirm current projection display picture size according to the watching mode of being stored commonly used.
8. method as claimed in claim 5, according to the range of size of said projection display picture, confirm that the size of the pairing projection display picture of each brightness shelves in the said current environment brightness range comprises:
When said current environment brightness range has N brightness shelves, the size of S projection display picture is set in the range of size of said projection display picture;
According to the ratio X of S and N, the following size of confirming the pairing projection display picture of each brightness shelves in the said current environment brightness range one by one:
According to the ratio X of S and N, confirm that i the pairing projection display picture of brightness shelves is of a size of the size of [iX] individual projection display picture; Wherein, " [] " expression rounds operation, i=1, and 2,3 ..., N; Wherein, S is the integer greater than N, and S by near the represented maximum integer of the number of bits of N.
9. device of regulating the projection display picture size of projector equipment, this device comprises surround lighting acquisition module, processor module and zoom stepper motor; Wherein,
Said surround lighting acquisition module obtains the current environmental light brightness of the current environment for use of said projector equipment in real time, and the current environmental light brightness of being obtained is sent to said processor module;
Said processor module sends the zoom instructions that carries moving step length information according to the corresponding relation of the size of said current environmental light brightness and preset environmental light brightness and projection display picture to said zoom stepper motor;
Said zoom stepper motor is according to the focal length of the zoom lens in the change of the moving step length information in the said zoom instructions projector equipment, to regulate the size of said current projection display picture.
10. device as claimed in claim 9, said processor module send zoom instructions according to said current environmental light brightness to said zoom stepper motor and comprise:
Said processor module is confirmed and the corresponding brightness shelves of current environmental light brightness in having the current environment brightness range of N brightness shelves; And, send zoom instructions to said zoom stepper motor according to the corresponding relation of determined brightness shelves with the size of brightness shelves of presetting and projection display picture;
Wherein, N is more than or equal to 1 and smaller or equal to the integer of the difference of the full-size of projection display picture and minimum dimension.
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|---|---|
| CN102662295B (en) | 2015-01-21 |
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