CN101943847A - Wide screen projection method by utilizing single projection - Google Patents
Wide screen projection method by utilizing single projection Download PDFInfo
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- CN101943847A CN101943847A CN2010102680586A CN201010268058A CN101943847A CN 101943847 A CN101943847 A CN 101943847A CN 2010102680586 A CN2010102680586 A CN 2010102680586A CN 201010268058 A CN201010268058 A CN 201010268058A CN 101943847 A CN101943847 A CN 101943847A
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Abstract
The invention provides a wide screen projection method by utilizing single projection. The method comprises the following steps: converting image signals of different interfaces into an RGB pixel digital signal, a synchronizing signal and a control signal; subdividing the converted RGB pixel digital signal into N numbered frames of small images, wherein N is a natural number larger than 1; scanning each frame of the subdivided small image, and simultaneously outputting a control signal corresponding to the frame of the small image so as to control light path switchover; respectively transmitting the N numbered frames of the scanned small images to an image display device; utilizing a light source to provide light rays, wherein the light rays irradiates at the image display device after being subject to preprocessing; and after processing each frame of the small image, utilizing the corresponding control signals in the step 003 to control the light path switchover so as to respectively project the small images to the corresponding positions on a screen. The invention adopts a single projection technology to realize wide screen projection; and a control IC used in the invention utilizes a group of RGB signal transmission modules, and coordinates with a group of signals to realize wide screen projection.
Description
[technical field]
The present invention relates to a kind of widescreen shadow casting technique, particularly relate to a kind of single-throw shadow widescreen shadow casting technique.
[background technology]
In recent years, each field every profession and trade is all paid much attention to informatization, and the visual demand of information is also sharply enlarged, and the demand of maximization, high-definition, high-resolution seamless anastomosing and splicing display system is grown with each passing day.Existing widescreen shadow casting technique has two kinds, the projection of the many throwings of a kind of employing widescreen, and a kind of is the projection of single-throw widescreen.The projection of many throwing widescreens generally is made of a plurality of projecting cells, and each projecting cell all comprises lamp optical system, video display board and projection optics system.Behind the image mosaic that each projecting cell projects, tangible seam situation is arranged between each screen, although technology has made seam do smallerly at present, but still spliced whole picture effect there is certain influence, and control IC does dividing processing to image in the image processing system, and view data is transferred to a plurality of video display boards simultaneously by many groups rgb signal transport module, increased design complexities and the production cost of control IC, the type selecting that causes controlling IC simultaneously is confined to the control IC of high-performance high integration.The projection of single-throw widescreen, its image show the screen aspect ratio that sticks to 4: 3 or 16: 9 or 16: 10, and the image displaying ratio is less, can not satisfy the demand of modern to giant-screen, the wide visual field.All there is the cost height in two types widescreen projector, and volume is big, weak point such as is not easy to carry.
[summary of the invention]
The technical problem to be solved in the present invention is to provide a kind of single-throw shadow widescreen projecting method, and it has realized single screen projection, and image scaled can be regulated.
The present invention is achieved in that
A kind of single-throw shadow of the present invention widescreen projecting method comprises the steps:
001, the picture signal with distinct interface is converted to rgb pixel digital signal, synchronizing signal and control signal;
002, the rgb pixel digital signal after will changing is divided into the little image of N frame, N be one greater than 1 natural number;
003, the little image of each frame after will cutting apart scans, and a pair of control signal that should the little image of frame of output is switched in order to the control light path in the time of scanning;
004, the little image of N frame after will scanning is transferred to image display device respectively;
005, provide light by a light source, described light shines image display device through after the pre-service;
006, the little image of each frame is switched by corresponding control signals light path in the step 003 after treatment, projects respectively on the relevant position of screen.
The present invention has following advantage:
1. the present invention uses single-throw shadow casting technique, by being image segmentation the little image of N frame, be sent to an image display device then, reflective mirror is controlled and is realized the widescreen projection in conjunction with the photoswitch signal light path being switched, the picture displaying ratio surpasses existing level, realize giant-screen truly, the projection in the wide visual field, solved existing widescreen shadow casting technique and had deficiencies such as the less and poor visual effect of image displaying ratio;
2. the present invention reduces cost of products greatly, dwindles small product size, realizes the widescreen projection of minitype projection machine, has solved widescreen projector cost height, volume is big, is unfavorable for the problems such as extensive promotion and application of widescreen projector;
3. the control IC of the present invention's use uses one group of rgb signal transport module, cooperate one group of signal both can realize the widescreen projection, The whole control IC circuit design is simple, control IC type selecting scope is wide, solved existing control IC and comprised many group rgb signal transport modules, control IC complex circuit designs, the control IC of type selecting limitation high-performance high integration, be unfavorable for the reduction of cost of products, and the problems such as popularization of product.
[description of drawings]
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the inventive method synoptic diagram.
Fig. 2 is the light path switching construction synoptic diagram of the embodiment of the invention 1.
Fig. 3 is the light path switching construction synoptic diagram of the embodiment of the invention 2.
Fig. 4 be before the image segmentation of an embodiment synoptic diagram.
Fig. 5 is the little image of three a frames synoptic diagram afterwards for image segmentation among Fig. 4.
Synoptic diagram after Fig. 6 is the medium and small image projection of Fig. 5 to the screen.
[embodiment]
See also Fig. 1 to Fig. 6.
As Fig. 1, picture signal enters from physical interface, then it is changed, and the picture signal that is about to distinct interface is converted to 24 rgb pixel digital signal, synchronizing signal and control signal.Then digital picture is divided into the little image of N frame, N is the natural number greater than 1, and realize scanning to the little image of each frame by control RGB, HS (line synchronizing signal), VS (field sync signal), DE (data permission signal), DCLK (data clock frequency), output control signal when little image is scanned, the state that control signal control light path is switched.Provide light by a light source, described light is through shaping, collimation, pass through inclined to one side acquisition polarized light after, shine on the video display board.Little image after the described scanning is transferred on the video display board, and little image is through after analyzing, collimating, and the light path switching state of controlling according to described control signal shines on the correspondence position of screen successively.Describe for several embodiment below:
In conjunction with Fig. 1, Fig. 2, Fig. 4, Fig. 5, Fig. 6, in the present embodiment 1, described light path switching comprises one group of reflective mirror, and 1 installs a photoswitch 2 on each sheet reflective mirror.Described photoswitch 2 moves the mechanical optical switch that changes light path for relying on optical element, or relies on electrooptical effect or magneto-optic effect or acoustooptic effect or thermo-optic effect to change the non-mechanical optical switch that waveguide index changes light path.The quantity of described reflective mirror 1 is more than or equal to the quantity of little image, and described control signal is the photoswitch signal, controls the duty of reflective mirror 1 by the duty of control photoswitch 2.The photoswitch signal of first frame makes first reflective mirror in running order, promptly is on the light path of little image projection; The reflective mirror that the second frame photoswitch signal at stop is first makes second reflective mirror in running order, and promptly first reflective mirror departs from the light path of little image projection, and second reflective mirror is on the light path of little image projection; And the like, the photoswitch signal of m sheet makes the reflective mirror of front m-1 sheet close, m sheet reflective mirror is in running order, m-1 sheet reflective mirror departs from the light path of little image projection promptly, m sheet reflective mirror is on the light path of little image projection, m is a natural number smaller or equal to N, and described m sheet reflective mirror reflective mirror does not thereafter influence the projection of this little image, and described little image projects on the screen fully through described m sheet reflective mirror.It is in running order always to give tacit consent to N sheet reflective mirror.By setting the angle of each sheet reflective mirror and optical axis, successively with the correspondence position of the little image projection of N frame to the screen.Now being that the little image of 3 frames is an example with image segmentation, light path is switched and is comprised that first reflective mirror 1.1 install 2.1, the second reflective mirrors of photoswitches 1.2 and 2.2, the three reflective mirrors of photoswitches 1.3 are installed a photoswitch 2.3 is installed.
Suppose that photoswitch K=1, photoswitch are on the light path of little image projection reflective mirror, photoswitch K=0, photoswitch make reflective mirror depart from the light path of little image projection.
Setting first reflective mirror 1.1 is K
1, second reflective mirror 1.2 is K
2, the 3rd reflective mirror 1.3 is K
3
Step 4 by the duty of photoswitch signal controlling photoswitch, makes K
1=0, K
2=0, K
3=1, and realize the scanning of image C content among Fig. 5 by control RGB, HS, VS, DE, DCLK, after scanning was finished, the image C among Fig. 5 projected among Fig. 63 position by the 3rd reflective mirror 1.3, and image transmission light path is with step 2.
In conjunction with Fig. 1, Fig. 3, Fig. 4, Fig. 5, Fig. 6, in the present embodiment 2, described light path switching comprises a reflective mirror 3, and described reflective mirror 3 is installed an electric rotating machine 4.Described control signal is an angular signal, and angular signal is controlled the rotation of reflective mirror 3 by the rotation of control electric rotating machine 4.When the little image of first frame transmits, angular signal control electric rotating machine 4 drives reflective mirror 3 and rotates to corresponding angle, make the relevant position of the little image projection of first frame to screen, when the little image of second frame transmits, angular signal is controlled electric rotating machine 4 drive reflective mirrors 3 once more and is rotated to corresponding angle, make the relevant position of the little image projection of second frame to screen, and the like, driving reflective mirror 3 by control electric rotating machine 4 rotates, the little image of each frame, reflective mirror 3 has a corresponding angle with optical axis, and the little image of each frame is projected on the corresponding position of screen successively.Now to be that the little image of 3 frames is an example with image segmentation, light path is switched and is formed by a reflective mirror, electric rotating machine of described reflective mirror installation.
Suppose
Be the angle between reflective mirror and the optical axis, respectively with the little image of first frame, the little image of second frame, the little image of the 3rd frame is corresponding.
Step 4 drives reflective mirror by angular signal control electric rotating machine and rotates, and the angle of control reflective mirror and optical axis is
And realize the scanning of image C content among Fig. 5 by control RGB, HS, VS, DE, DCLK, after scanning was finished, the image C among Fig. 5 projected among Fig. 63 position, and image transmission light path is with step 2.
To step 4, use the single image display device by step 1, realized 3 screen splicings.
Based on the embodiment among the present invention, those of ordinary skills are under the prerequisite of not making performing creative labour, and the every other embodiment that is obtained belongs to the scope of protection of the invention.
Claims (8)
1. a single-throw shadow widescreen projecting method is characterized in that, comprises the steps:
001, the picture signal with distinct interface is converted to rgb pixel digital signal, synchronizing signal and control signal;
002, the rgb pixel digital signal after will changing is divided into the little image of N frame, N be one greater than 1 natural number;
003, the little image of each frame after will cutting apart scans, and a pair of control signal that should the little image of frame of output is switched in order to the control light path in the time of scanning;
004, the little image of N frame after will scanning is transferred to image display device respectively;
005, provide light by a light source, described light shines image display device through after the pre-service;
006, the little image of each frame is switched by corresponding control signals light path in the step 003 after treatment, projects respectively on the relevant position of screen.
2. a kind of single-throw shadow widescreen projecting method according to claim 1 is characterized in that: the scanning to little image in the described step 003 specifically is to realize the scanning to the little image of each frame by RGB, HS, VS, DE, the DCLK that controls the little image of each frame.
3. a kind of single-throw shadow widescreen projecting method according to claim 1, it is characterized in that: it is to have been configured with the duty of the reflective mirror of optical axis included angle and carry out by controlling one group by described control signal that light path in the described step 006 is switched, and this group reflective mirror comprises the reflective mirror with described little image equal amount.
4. a kind of single-throw shadow widescreen projecting method according to claim 3, it is characterized in that: described control signal is the photoswitch signal, the photoswitch signal of the little image of corresponding first frame makes first reflective mirror in running order, promptly is on the light path of little image projection; First reflective mirror of photoswitch signal at stop of the little image of corresponding second frame promptly departs from the light path of little image projection, and second reflective mirror is in running order, promptly is on the light path of little image projection; By that analogy, the photoswitch signal of the little image of corresponding m frame is closed the m-1 sheet reflective mirror of its front, and m sheet reflective mirror is in running order, and m is a natural number smaller or equal to N, and described m sheet reflective mirror should reflect by little image fully.
5. a kind of single-throw shadow widescreen projecting method according to claim 4, it is characterized in that: described N sheet reflective mirror is in running order always, promptly is on the light path of little image projection always, does not receive the photoswitch signal.
6. a kind of single-throw shadow widescreen projecting method according to claim 1, it is characterized in that: it is to be undertaken by the angle of controlling reflective mirror rotation by described control signal that the light path in the described step 006 is switched, described control signal is a turn signal, the rotational angle of the corresponding control of the turn signal reflective mirror of the little image of corresponding each frame, making the front of reflective mirror and optical axis forward angle is the angle of setting.
7. a kind of single-throw shadow widescreen projecting method according to claim 1 is characterized in that: the pre-service of described step 005 comprises that further light is through shaping, collimation, and inclined to one side an acquisition shines image display device behind the polarized light again.
8. a kind of single-throw shadow widescreen projecting method according to claim 1 is characterized in that: the little image of described step 006 further comprises through handling, the little image process analyzing outgoing of each frame, and collimate.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102680586A CN101943847A (en) | 2010-08-31 | 2010-08-31 | Wide screen projection method by utilizing single projection |
| PCT/CN2011/070423 WO2012027974A1 (en) | 2010-08-31 | 2011-01-20 | Single projection wide-screen projection device and method |
| US13/255,790 US20130147865A1 (en) | 2010-08-31 | 2011-01-20 | Single-projection widescreen projecting device and single-projection widescreen projecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102680586A CN101943847A (en) | 2010-08-31 | 2010-08-31 | Wide screen projection method by utilizing single projection |
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| CN101943847A true CN101943847A (en) | 2011-01-12 |
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| CN2010102680586A Pending CN101943847A (en) | 2010-08-31 | 2010-08-31 | Wide screen projection method by utilizing single projection |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943849A (en) * | 2010-08-31 | 2011-01-12 | 福建网讯科技有限公司 | Single-projection widescreen projector |
| WO2012027974A1 (en) * | 2010-08-31 | 2012-03-08 | 福建网讯科技有限公司 | Single projection wide-screen projection device and method |
| CN103869585A (en) * | 2012-12-13 | 2014-06-18 | 联想(北京)有限公司 | Projection device and information processing method used for projection device |
| CN104469223A (en) * | 2014-12-02 | 2015-03-25 | 苏州佳世达光电有限公司 | Projection device and projection image splicing method |
| CN114615480A (en) * | 2022-03-11 | 2022-06-10 | 峰米(重庆)创新科技有限公司 | Projection picture adjusting method, projection picture adjusting device, projection picture adjusting apparatus, storage medium, and program product |
| CN114637023A (en) * | 2015-08-24 | 2022-06-17 | 高通股份有限公司 | System and method for laser depth map sampling |
| WO2024078188A1 (en) * | 2022-10-11 | 2024-04-18 | 惠州华星光电显示有限公司 | Display system |
-
2010
- 2010-08-31 CN CN2010102680586A patent/CN101943847A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943849A (en) * | 2010-08-31 | 2011-01-12 | 福建网讯科技有限公司 | Single-projection widescreen projector |
| WO2012027974A1 (en) * | 2010-08-31 | 2012-03-08 | 福建网讯科技有限公司 | Single projection wide-screen projection device and method |
| CN103869585A (en) * | 2012-12-13 | 2014-06-18 | 联想(北京)有限公司 | Projection device and information processing method used for projection device |
| CN103869585B (en) * | 2012-12-13 | 2016-01-27 | 联想(北京)有限公司 | Projector equipment and for its information processing method |
| CN104469223A (en) * | 2014-12-02 | 2015-03-25 | 苏州佳世达光电有限公司 | Projection device and projection image splicing method |
| CN114637023A (en) * | 2015-08-24 | 2022-06-17 | 高通股份有限公司 | System and method for laser depth map sampling |
| CN114615480A (en) * | 2022-03-11 | 2022-06-10 | 峰米(重庆)创新科技有限公司 | Projection picture adjusting method, projection picture adjusting device, projection picture adjusting apparatus, storage medium, and program product |
| WO2024078188A1 (en) * | 2022-10-11 | 2024-04-18 | 惠州华星光电显示有限公司 | Display system |
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Open date: 20110112 |