CN1674653A - A projection display equipment and its working state displaying and keystone distortion correcting method - Google Patents
A projection display equipment and its working state displaying and keystone distortion correcting method Download PDFInfo
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- CN1674653A CN1674653A CN 200410021444 CN200410021444A CN1674653A CN 1674653 A CN1674653 A CN 1674653A CN 200410021444 CN200410021444 CN 200410021444 CN 200410021444 A CN200410021444 A CN 200410021444A CN 1674653 A CN1674653 A CN 1674653A
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Abstract
The present invention relates to an equipment cable of indicating working state of projection type image display equipment and correcting trapezoidal distortion produced on display screen and its method. Said invented projection type image display equipment has a microcomputer for controlling work of projection type image display equipment, and the front side of said projection type image display equipment is equipped with at least more than one laser beam generation component. Said invention also provides the concrete function and action of said microcomputer and said laser beam generation component, and also provides the correcting method trapezoidal distortion.
Description
Technical field
The present invention will be referred to the operating state demonstration of a kind of projection display apparatus and this equipment and the method for keystone correction.In more detail, will be referred to a kind of operating state of utilizing laser beam externally to express projection display apparatus, and go to proofread and correct projection display apparatus and the method thereof that appears at the trapezoidal distortion on the screen.
Background technology
Recently, along with the development of information industry, be used for showing that the demand of the display device of big picture more and more increases.Thisly be used for showing in the display device of big picture that use the display device of projection type (projection) more, what wherein especially obtain favoring is LCD projector.This LCD projector promotes the use of in the display unit of home-use Digital Television gradually except delivering the material being used on the exchanging meeting showing.
Fig. 1 is traditional display device, for example the structured flowchart of LCD projector 100.
As shown in Figure 1, LCD projector 100 will be made of following several sections, is provided with microcomputer 10 that is:, is used for controlling each component part of projector inside; Be provided with the acceptance division 12 of remote controller signal, be used for receiving the ON/OFF signal that sends from the remote controller 13 that is positioned at the projector outside; Be provided with AC power supplies receiving portion 24, be used for receiving the AC power that provides from the outside; Be provided with power supply unit 14, it will be according to the control signal of microcomputer, and the AC power supplies of going conversion to obtain providing from AC power supplies acceptance division 24 provides driving power to each component part then; Be provided with light source 16, be used for providing white light to LCD board 18; Be provided with cooling fan 20, be used for reducing the temperature of light source; Be provided with the operating state that constitutes with LED luminescent devices such as (light-emitting diodes) and represent portion 22, be used for representing the operating state of projector.
Operating state is represented portion 22, and is as illustrated in Figure 2, is arranged on usually on the upper surface of projector; The user represents portion 22 by operating state, will go to understand the operating state of projector.
As mentioned above, in traditional projector, operating state is represented portion owing to be arranged on the upper surface of projector, thereby when projector is installed on the ceiling, the user is to the operating state of projector, especially import after the signal of opening power, can't with the naked eye discern whether operate as normal of projector.
In addition, when projector was installed on the horizontal plane, if utilize the place of projector very wide, the user was difficult to discern the demonstration situation that the led state that is arranged on projector's upper face is represented portion a long way off so.
In addition, trapezoidal distortion (keystone) need be proofreaied and correct by projector, and this is a unexistent additional function in other display unit.So-called trapezoidal distortion is meant the light that casts out from projector, by projection lens the time, demonstrates the trapezoidal image of a distortion on screen, rather than a right angle quadrangle.
Below, with reference to Fig. 3 a, 3b and Fig. 4 a, 4b, describe for the cause of foregoing generation trapezoidal distortion.Fig. 3 a, 3b show LCD projector respectively when carrying out non-upwards projection, obtain the field and the shape thereof of the image represented on screen.Shown in Fig. 3 a, projector is arranged on the horizontal plane of desktop etc., and with non-upwards when mode is carried out projection, the projector distance d1 of the top is identical (promptly with projector distance d2 bottom, d1=d2), so shown in Fig. 3 b, will demonstrate the tetragonal image in right angle.But, in this case, exist the problem of show image below the horizontal plane extended line that projector is set.
In order to address the above problem, shown in Fig. 4 a, be to the make progress projection of mode of screen.In this case, d1＞d2, thereby on screen, obtain the image that shows, will become a trapezoidal apperance shown in Fig. 4 b.This image distortion phenomenon that obtains trapezoidal apperance on screen is called trapezoidal distortion.
In order to proofread and correct this trapezoidal distortion phenomenon, proofreading and correct by naked eyes by the user traditionally, become the right angle quadrangle up to image; In this case because there is not objective datum mark, will be along with the individual the coming in every shape of image; In addition, under the unskilled situation of operation, exist the problem of expensive time.
Summary of the invention
The present invention will provide a kind of novel projection display apparatus in order to address the above problem, and shows the operating state of this equipment and the method for correction trapezoidal distortion.
First purpose of the present invention is to provide a kind of projection display apparatus, this equipment is except expressing on the upper face of projector the operating state of projector, a kind of indication device is set in addition, utilize this device that the operating state of projector is shown on the screen, so that allow the user grasp the operating state of projector easily.
In addition, second purpose of the present invention is to provide a kind of projection display apparatus, and this equipment will be pointed out out datum mark on screen when carrying out keystone, so that the user according to these datum marks, more accurately and easily goes to proofread and correct trapezoidal distortion when carrying out keystone.
Projection type image display device of the present invention is characterized in that it is provided with the microcomputer that is used for controlling the work of projection type image display device; And on the front of projection type image display device, be equipped with an above laser beam generating unit, and according to the control signal that sends from microcomputer, to screen projecting laser bundle; To on screen, form the laser spots of a regulation shape by the laser beam of laser beam generating unit projection.
Above-mentioned microcomputer ends when light source obtains opening when receiving the electric power starting signal from the outside, will be from the laser beam generating unit to screen projecting laser bundle.
In addition, above-mentioned microcomputer will be from the laser beam generating unit to screen projecting laser bundle when receiving correction trapezoidal distortion command signal from the outside.
The display packing of projection type image display device operating state of the present invention is characterized in that will comprising following several stages under the situation of waiting mode, is provided with the stage that receives power on signal from the outside that is:; Be provided with and connect the laser beam generating unit, make laser beam project stage on the screen; Be provided with and connect the stage that is cooled to the light source under the set point of temperature; Be provided with and turn-off the laser beam generating unit, interrupt the stage of projecting laser bundle.Laser beam from the projection of laser beam generating unit will form laser spots on screen.
The bearing calibration of projection type image display device trapezoidal distortion of the present invention is characterized in that and will comprise following several stages, is provided with the stage that receives the command signal of proofreading and correct trapezoidal distortion from the outside that is:; Be provided with and connect the laser beam generating unit, make laser beam project stage on the screen; Be provided with command signal, the stage that trapezoidal distortion is proofreaied and correct according to the correction trapezoidal distortion that receives from the outside; Be provided with the signal that finishes according to the correction trapezoidal distortion that receives from the outside, turn-off the stage of laser beam generating unit.
Above the laser beam of said laser beam generating unit projection will on screen, form the tetragonal laser spots in right angle.
According to the present invention,, the operating state of projection type image display device will be understood more easily by projecting the laser beam on the screen; When proofreading and correct trapezoidal distortion,, can more accurately and promptly carry out the correction of trapezoidal distortion on screen because the laser spots that forms plays a part datum mark.
According to the present invention, utilize from the laser beam of the laser beam generating unit projection that is located at the projector front, on screen, form laser spots.Owing to can demonstrate the operating state of projector by these laser spots on screen, although therefore projector is installed under the situation on the ceiling, user's a glance just can be understood the operating state of projector.And, also have a strong point to be, utilize under the situation of projector in very big place, space, also can be easy to understand the operating state of projector by being formed on the laser spots on the screen.
In addition, because the laser spots that forms is the right angle quadrangle, when proofreading and correct trapezoidal distortion, can play the datum mark of correction on screen.And the user is benchmark with the laser spots, can faster more accurately go to proofread and correct trapezoidal distortion.
Description of drawings
Fig. 1 is the structured flowchart of traditional LC D (LCD) projector.
Fig. 2 shows in traditional LC D projector, is used for representing the location drawing of the expression portion of projector's operating state.
Fig. 3 a and 3b show in traditional LC D projector, and be non-when upwards throwing, and is projected the situation of picture on screen.
Fig. 4 a and 4b show in traditional LC D projector, when upwards throwing, are projected the situation of picture on screen.
Fig. 5 is the structured flowchart of the LCD projector of example of the present invention.
Fig. 6 is the profile schematic diagram of the LCD projector of example of the present invention.
Fig. 7 a～7c shows in the projector of example of the present invention, proofreaies and correct the method figure of trapezoidal distortion.
Fig. 8 is the projector's operating state of expression example of the present invention and the flow chart of explanation keystone algorithm.
The explanation ※ of ※ accompanying drawing major part
10,10 ': microcomputer 12: remote controller acceptance division
13: remote controller 14: power supply unit
16: light source 18:LCD board
20: cooling fan 22: state representation portion
24:AC acceptance division 26: laser beam generating unit
28: projection lens 30: laser spots
100:LCD projector
Embodiment
Below, with reference to Fig. 5～Fig. 8, example of the present invention is carried out specific description more.
Fig. 5 is the structured flowchart of the LCD projector of example of the present invention.For the purpose of reference, with the traditional LC D projector shown in Fig. 1 identical with corresponding structure division, will adopt identical or similar cross reference number, and will omit explanation the identical structure division of function.
As shown in Figure 5, the projector 200 of example of the present invention will be made of following several sections, that is: be provided with microcomputer 10 ', be used for controlling each component part of projector inside; Be provided with the acceptance division 12 of remote controller signal, be used for receiving the ON/OFF signal that sends from the remote controller 13 that is positioned at the projector outside; Be provided with AC power supplies acceptance division 24, be used for receiving the AC power that provides from the outside; Be provided with power supply unit 14, it will be according to the control signal of microcomputer, and the AC power supplies of going conversion to obtain providing from AC power supplies acceptance division 24 provides driving power to each component part then; Be provided with light source 16, be used for providing white light to LCD plate 18; Be provided with cooling fan 20, be used for reducing the temperature of light source; Be provided with the operating state that constitutes with LED luminescent devices such as (light-emitting diodes) and represent portion 22, be used for representing the operating state of projector; Be provided with laser beam generating unit 26, be used for to screen projecting laser bundle.
Laser beam generating unit 26 as shown in Figure 6, is set on four corners in projector front; If connect the power supply of projector, so laser beam is projected on the screen, and form four laser spots 30 (with reference to Fig. 7 a～7c).These four laser spots on waiting mode, after the signal of input energized, are ended when connecting light source, will be displayed on the screen, and it will inform user projector at work.
In addition, shown in Fig. 7 a, by the laser beam of laser beam generating unit 26 projection, owing to directly do not penetrate by camera lens, therefore formed laser spots 30 on screen, such as shown in Fig. 7 b and the 7c will form the tetragonal shape in right angle.Laser spots is owing to the similar right angle of the image size quadrangle of wanting projection is followed in one of formation on screen, so the user uses laser spots 30 can go to proofread and correct trapezoidal distortion rapidly and accurately as datum mark when the correction trapezoidal distortion.
It is an example of N Reference Alignment trapezoidal distortion that Fig. 7 b and 7c show with laser spots 30.That is the image state of the trapezoidal distortion form of demonstration before, Fig. 7 b shows and proofreaies and correct; And Fig. 7 c to show with laser spots 30 be benchmark, finish to proofread and correct after the trapezoidal distortion, demonstrate the state of right angle quadrangle image.
Below, to having said structure, promptly the course of work of the LCD projector of example of the present invention is carried out specific description more.Fig. 8 is the projector's operating state of expression example of the present invention and the flow chart of explanation keystone algorithm.
As shown in Figure 8, in waiting mode (stage S110), the operating state of microcomputer 10 ' will constitute to the luminescent device by LED etc. is represented portion, and expression is in waiting mode state (stage S112) now.Then, if signal (stage S114) from remote controller input energized, microcomputer will allow laser beam generating unit 26 remove to generate laser beam so, and form laser spots (stage S115) on screen, and in state representation portion 22 expression projector start working (stage S116).Then, microcomputer will remove to move cooling fan 20 (stage S118), fully remove to connect light source (stage S120) after the cooling light source.Afterwards, microcomputer is represented (stage S122) after present projector's operating state in state representation portion 22, allows the laser beam generating unit turn-off, and interrupts projecting laser bundle (stage S124).Then, projector will change normal getting type (stage S126) over to.Then, if receive the instruction (stage S128) of proofreading and correct trapezoidal distortion from the user, microcomputer will allow laser beam generating unit 26 projecting laser bundles so, and form laser spots (stage S130) on screen.Then, microcomputer is to the OSD (screen display) (stage S132) of screen with the output calibration trapezoidal distortion.The user sees screen and OSD with one side, and one side goes operation to proofread and correct the trapezoidal distortion key, and proofreaies and correct trapezoidal distortion (stage S134) according to the correction trapezoidal distortion signal that produces.At this moment, the user will be datum mark with the laser spots that forms on screen, can faster more accurately go to proofread and correct trapezoidal distortion.Then, be used for announcing the keystone correction end signal (stage S136) of finishing keystone correction, will remove to turn-off the OSD (stage S138) that the correction trapezoidal distortion is used so if receive.Go to turn-off laser beam generating unit (S140) then.Whereby, be used for when finish connecting projector the Display projector machine operating state and proofread and correct the algorithm of trapezoidal distortion.
In addition, in the example that illustrates with reference to Fig. 8, the operating state of projector shows and the correction of trapezoidal distortion moves by a series of algorithm and finishes, and still needn't stick to this.For example, in a series of stages of Display projector machine operating state with proofread and correct in a series of stages of trapezoidal distortion the example that also can have a wherein some algorithm of execution to constitute.
In addition, the laser beam generating unit that is arranged on the projector front has at least more than one for well.Especially when display working condition, be preferably in and form more than one laser spots on the screen; When proofreading and correct trapezoidal distortion, preferably the laser spots more than at least four forms the right angle quadrangle on screen.
More than, be that the center is analyzed with example of the present invention.If position industry personage, the present invention is not in going out invention thought and scope so, and it is understandable changing.That is, therefore the present invention can not think to be limited in the above-mentioned example owing to can change in the interest field of application.
Claims (6)
1, a kind of projection display apparatus is characterized in that it is provided with to be used for controlling projection and to show equipment
The microcomputer of work;
An above laser beam generating unit on the front of projection display apparatus, is equipped with at least;
By the laser beam of laser beam generating unit projection, will on screen, form the laser spots of a regulation shape.
2, according to the said projection display apparatus of claim 1, it is characterized in that:
Microcomputer ends when light source obtains opening when receiving the electric power starting signal from the outside, will be from the laser beam generating unit to screen projecting laser bundle.
3, according to the said projection display apparatus of claim 1, it is characterized in that:
Microcomputer will be from the laser beam generating unit to screen projecting laser bundle when receiving correction trapezoidal distortion command signal from the outside.
4, according to the said projection display apparatus of claim 1～3, it is characterized in that:
The laser spots that forms on screen is a plurality of laser spots;
Above-mentioned a plurality of laser spots forms the tetragonal shape in right angle.
5, a kind of operating state display packing of projection display apparatus is characterized in that:
Be provided with the stage that receives power on signal from the outside;
Be provided with and connect the laser beam generating unit, make laser beam project stage on the screen;
Be provided with and connect the stage that is cooled to the light source under the set point of temperature;
Be provided with and turn-off the laser beam generating unit, interrupt the stage of projecting laser bundle;
Laser beam from the projection of laser beam generating unit will form laser spots on screen.
6, a kind of bearing calibration of trapezoidal distortion of projection display apparatus is characterized in that:
Be provided with the stage that receives the command signal of proofreading and correct trapezoidal distortion from the outside;
Be provided with and connect the laser beam generating unit, make laser beam project stage on the screen;
Be provided with command signal, the stage that trapezoidal distortion is proofreaied and correct according to the correction trapezoidal distortion that receives from the outside;
Be provided with the signal that finishes according to the correction trapezoidal distortion that receives from the outside, turn-off the stage of laser beam generating unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410021444 CN1674653A (en) | 2004-03-23 | 2004-03-23 | A projection display equipment and its working state displaying and keystone distortion correcting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410021444 CN1674653A (en) | 2004-03-23 | 2004-03-23 | A projection display equipment and its working state displaying and keystone distortion correcting method |
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| CN1674653A true CN1674653A (en) | 2005-09-28 |
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| CN 200410021444 Pending CN1674653A (en) | 2004-03-23 | 2004-03-23 | A projection display equipment and its working state displaying and keystone distortion correcting method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1976482B (en) * | 2005-11-28 | 2010-09-08 | 上海科技馆 | Irregular stereo-curtain projecting method |
| CN105128539A (en) * | 2015-09-21 | 2015-12-09 | 大族激光科技产业集团股份有限公司 | Optical projection laser marking method and laser marking system |
| CN109271053A (en) * | 2018-07-17 | 2019-01-25 | 苏州佳世达光电有限公司 | For adjusting the embedded touch system of projection image and using its projector |
| CN115134567A (en) * | 2022-05-19 | 2022-09-30 | 深圳市康帕斯科技发展有限公司 | Projection picture fusion area correction method, projection picture fusion area correction system, projection system, and medium |
-
2004
- 2004-03-23 CN CN 200410021444 patent/CN1674653A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1976482B (en) * | 2005-11-28 | 2010-09-08 | 上海科技馆 | Irregular stereo-curtain projecting method |
| CN105128539A (en) * | 2015-09-21 | 2015-12-09 | 大族激光科技产业集团股份有限公司 | Optical projection laser marking method and laser marking system |
| CN109271053A (en) * | 2018-07-17 | 2019-01-25 | 苏州佳世达光电有限公司 | For adjusting the embedded touch system of projection image and using its projector |
| CN115134567A (en) * | 2022-05-19 | 2022-09-30 | 深圳市康帕斯科技发展有限公司 | Projection picture fusion area correction method, projection picture fusion area correction system, projection system, and medium |
| CN115134567B (en) * | 2022-05-19 | 2023-07-25 | 深圳市康帕斯科技发展有限公司 | Projection picture fusion zone correction method, system, projection system and medium |
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