CN102214016B - Projection device and positioning method for judging position of light spot in projection picture - Google Patents
Projection device and positioning method for judging position of light spot in projection picture Download PDFInfo
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- CN102214016B CN102214016B CN 201010161332 CN201010161332A CN102214016B CN 102214016 B CN102214016 B CN 102214016B CN 201010161332 CN201010161332 CN 201010161332 CN 201010161332 A CN201010161332 A CN 201010161332A CN 102214016 B CN102214016 B CN 102214016B
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Abstract
The invention discloses a projection device and a positioning method for judging a position of a light spot in a projection picture of the projection device. The projection device comprises a lens, a light detector, a light guide module and a processing circuit. The light guide module is used for receiving the light spot through the lens and guiding the light spot to the light detector. The light detector is used for outputting a detection signal to the processing circuit according to the light spot in a detection period, so that the processing circuit judges the position of the light spot in the projection picture of the projection device according to the detection signal.
Description
Technical field
The invention relates to a kind of projection arrangement and reach the localization method that is used for this projection arrangement.In more detail, the present invention is a kind of for judging that a luminous point is in projection arrangement and the localization method thereof of a position of a projected picture.
Background technology
In recent years, because the image quality of projection arrangement promotes gradually, manufacturing cost reduces, and the miniaturization of volume is no matter be that enterprise, individual or family are for all increases gradually of utilization rate of projection arrangement.For example, in business circles and academia, when user's appliance computer carries out PowerPoint, computing machine can be connected to projection arrangement usually, and on a projection screen, project a display frame through projection arrangement.
In addition, when the user carries out PowerPoint, can use a laser pen usually, by the luminous point of laser pen output, in the display frame of projection arrangement projection, indicate the described content of present PowerPoint.Therefore, in order to promote the use value of projection arrangement, the existing projection arrangement that possesses interaction function namely utilizes a charge coupled cell (Charge-coupled Device; CCD) receive the luminous point that laser pen is exported, subsequently by charge coupled cell, judge this luminous point in the position of the display frame of projection arrangement projection, and produce a judged result.At last, the position of the luminous point that projection arrangement can be exported laser pen exports the computing machine that is connected with projection arrangement to.Thus, the user can carry out the operation of computing machine through laser pen.
Yet because charge coupled cell is a kind of two-dimensional position inductor, its another camera lens of need arranging in pairs or groups could receive the luminous point of laser pen output.When so projection arrangement manufacturer possesses the projection arrangement of interaction function in making, except being used for originally the camera lens of projection display frame, more need increase another camera lens of the luminous point that receives laser pen output, this will significantly increase the volume of projection arrangement, thereby make projection arrangement manufacturer to possess the making of the projection arrangement of interaction function based on back projection type (rear projection type) projection arrangement or pre-projecting type (the front projection type) projector equipment of miniaturization.
In view of this, how to make the projection arrangement that possesses interaction function and volume miniaturization, cause the design restriction of the projection arrangement that possesses interaction function to solve charge coupled cell, this is that industry is needed the problem of solution badly now.
Summary of the invention
The purpose of this invention is to provide a kind of projection arrangement and be used for judging that a luminous point is in the localization method of the position of projected picture, make projection arrangement possess interaction function and volume miniaturization, cause the design of the projection arrangement that possesses interaction function to limit to solve charge coupled cell.
Provide a kind of for judging a luminous point in the projection arrangement of a position of a projected picture according to an aspect of the present invention, it comprises a camera lens, a photodetector, a photoconduction and draws module and a treatment circuit.This treatment circuit is electrically connected to this photodetector.This light source module is in order to export a projection source.This photoconduction draws module and has a plurality of catoptrons, and these catoptrons form has 2
n* 2
mAn array of individual pixel.This photoconduction draws module and receives this luminous point through this camera lens, and this luminous point is directed to this photodetector.This photodetector draws module from this photoconduction and receives this luminous point, and in a sense cycle, exports a detection signal to this treatment circuit according to this luminous point.This treatment circuit judges that according to this detection signal this luminous point is in the position of this projected picture immediately.
Provide a kind of for judging a luminous point in the localization method of a position of a projected picture according to a further aspect of the invention, it is to be applicable to the described projection arrangement of leading portion.This localization method comprises the following step: (a) produce a sense cycle; (b) in this sense cycle, end the projection of this projection source temporarily; (c) see through this camera lens and receive this luminous point, and this luminous point is sent to this photoconduction draws module; (d) after receiving this luminous point, this luminous point is transferred to this photodetector; (e) export a detection signal to this treatment circuit according to this luminous point; And (f) judge that according to this detection signal this luminous point is in the position of this projected picture.
Provide according to another aspect of the invention to be used to a sense cycle and to judge a luminous point in the localization method of a position of a projected picture, it is to be applicable to the described projection arrangement of leading portion.This localization method comprises the following step: (a) in this sense cycle, end the projection of this projection source temporarily; (b) open these catoptrons; (c) according to a first direction, be at least one first area and at least one second area with this array partition; (d) open the catoptron of this at least one first area; (e) close the catoptron of this at least one second area; (f) according to a second direction, be at least one the 3rd zone and at least one the 4th zone with this array partition, wherein this first direction is to be orthogonal to this second direction; (g) open the catoptron in this at least one the 3rd zone; (h) close this at least one four-range catoptron; And (i) according to this at least one first area, this at least one second area, this at least one the 3rd regional and this at least one the 4th zone wherein two, measure this luminous point in the position of this projected picture.
Provide according to a further aspect of the present invention to be used to a sense cycle and to judge a luminous point in another localization method of a position of a projected picture, it is to be applicable to the described projection arrangement of leading portion.This localization method comprises the following step: (a) in this sense cycle, end the projection of this projection source temporarily; (b) open these catoptrons; (c) according to a first direction, be at least one first area and at least one second area with this array partition; (d) open the catoptron of this at least one first area; (e) close the catoptron of this at least one second area; (f) according to this at least one first area and this at least one second area one of them, measure this luminous point in a position of this first direction; (g) according to position and the second direction of this luminous point in this first direction, should at least one first area and this at least one second area one of them be divided at least one the 3rd zone and at least one the 4th zone, wherein this first direction is to be orthogonal to this second direction; (h) open the catoptron in this at least one the 3rd zone; (i) close this at least one four-range catoptron; (j) according to should be at least one the 3rd zone and this at least one the 4th regional one of them, measure this luminous point in a position of this second direction; And (k) according to this luminous point in the position of this first direction and in the position of this second direction, measure this luminous point in the position of this projected picture.
Provide according to a further aspect of the invention to be used to a sense cycle and to judge a luminous point in the another localization method of a position of a projected picture, it is to be applicable to the described projection arrangement of leading portion.This localization method comprises the following step: (a) in this sense cycle, end the projection of this projection source temporarily; (b) in this sense cycle, transmit a plurality of switching signals; (c) in response to these switching signals, respectively this catoptron carries out a switch motion according to a sequential; (d) in response to the respectively switch motion of this catoptron, make this photodetector produce a plurality of pulse signals, and transmit these pulse signals; And (e) in response to these pulse signals, judge that this luminous point is in the position of this projected picture.
Useful technique effect of the present invention is: projection arrangement of the present invention and judge a luminous point in the method for a position of a projected picture of this projection arrangement can see through a photoconduction and draw module forming this projected picture, and judge the position of luminous point on projected picture.Specifically, the present invention directly sees through a plurality of mirror elements formation projected pictures that photoconduction draws module, and utilizes these mirror elements to judge that luminous points are in the position of projected picture.With the existing projection arrangement that possesses interaction function in comparison, projection arrangement of the present invention can omit charge coupled cell, and the necessary element that directly utilizes projection arrangement itself namely to have judges that luminous point is in the position of projected picture.Thus, projection arrangement of the present invention not only has the advantage of Miniaturizable design, more can save the required cost of charge coupled cell, further reduces production cost.
Description of drawings
Behind the embodiment of consulting accompanying drawing and describing subsequently, affiliated technical field has knows that usually the knowledgeable just can understand other purpose of the present invention, advantage and technological means of the present invention and implement aspect wherein:
Fig. 1 is the synoptic diagram of the optical projection system of first embodiment of the invention;
Fig. 2 is the synoptic diagram of the optical projection system of second embodiment of the invention;
Fig. 3 A to Fig. 3 B, Fig. 4 A to Fig. 4 E and Fig. 5 A to Fig. 5 E figure are the synoptic diagram of the enforcement aspect of first embodiment and second embodiment;
Fig. 6 is the process flow diagram of the method for third embodiment of the invention;
Fig. 7 is the process flow diagram of the localization method of fourth embodiment of the invention; And
Fig. 8 A to Fig. 8 B is the process flow diagram of the enforcement aspect of the 4th embodiment.
Embodiment
Below will explain content of the present invention by embodiment, the invention relates to a kind of for judging that a luminous point is in projection arrangement and the localization method thereof of a position of a projected picture.Projection arrangement can be that digital light is handled (Digital Light Processing; DLP) projection display or liquid crystal (Liquid Crystal Display; LCD) projection display etc. has the equipment of Projection Display function.It should be noted that, only be explaination purpose of the present invention about the explanation of embodiment, but not in order to direct restriction the present invention, simultaneously, in following examples and the accompanying drawing, all omit and do not illustrate with the non-directly related element of the present invention; And each interelement size relationship is only for asking easy understanding in the accompanying drawing, and is non-in order to limit actual ratio.
The first embodiment of the present invention is a kind of optical projection system 1 as shown in Figure 1, and it comprises a projection arrangement 10, a laser pen 11 and a projection screen 13.10 of projection arrangements can be a back projection projection display or a front projection projection display.This projection arrangement 10 comprises a camera lens 101, a photoconduction draws module 103, a photodetector 105, a light source module 107 and a treatment circuit 109.Light source module 107 comprises a bulb 107a and a colour wheel (Color Wheel) 107b.Photoconduction draws module 103 and comprises prism group (TIR-Prism) 103a, a digital minitype reflector element (Digital Micromirror Device; DMD) 103b, a spectroscope 103c and a light harvesting post 103d.
In the unlatching cycle of projection arrangement 10, camera lens 101 can draw module 103 by photoconduction and receive projection source 102, and shows a projected picture on projection screen 13.The user then can form one and have infrared ray (Infrared ray on the projected picture that projection screen 13 shows by laser pen 11; IR ray) luminous point of 104 (dotted lines as shown in the figure).In closing in the cycle of projection arrangement 10, photoconduction draws module 103 will be through camera lens 101 receiving infrared-ray light 104, and infrared ray 104 is directed to photodetector 105.
Subsequently, receive infrared ray 104 when photodetector 105 draws module 103 from photoconduction, will export a detection signal 106 to treatment circuit 109 according to infrared ray 104.What need special instruction is that detection signal 106 is made up of a plurality of pulse signals.At last, treatment circuit 109 is judged the position of luminous point on the projected picture that projection screen 13 shows with infrared ray 104 namely according to detection signal 106.
In detail, the digital minitype reflector element 103b that photoconduction draws module 103 has a plurality of catoptrons (figure does not illustrate), and digital minitype reflector element 103b more makes aforementioned catoptron carry out a spatial modulation stroke in sense cycle; Wherein, this spatial modulation stroke is to make aforementioned catoptron carry out several specific spatial modulation, and this spatial modulation stroke will be in hereinafter describing in detail.These catoptrons have 2
n* 2
mAn array of individual pixel, wherein n and m are all a positive integer.106 of detection signals are made of n+m+1 position, and correspond to aforementioned 2
n* 2
mIndividual pixel one of them.109 for the treatment of circuits electrically connect digital minitype reflector element 103b, in order to the Push And Release of the catoptron of control figure microreflection mirror element 103b.Accordingly, projection arrangement 10 will be able to the Push And Release via the catoptron of digital minitype reflector element 103b, the guiding projection source 102 to camera lens 101, and on projection screen 13 the Display projector picture; Similarly, projection arrangement 10 is also with the Push And Release of the catoptron by digital minitype reflector element 103b, guiding infrared ray 104 is to photodetector 105, and output detection signal 106, so that treatment circuit 109, is judged the position of luminous point on the projected picture that projection screen 13 shows with infrared ray 104 according to detection signal 106.
The second embodiment of the present invention is another kind of optical projection system 2 as shown in Figure 2, and it comprises a projection arrangement 20, a laser pen 11 and a projection screen 13.What need special instruction is that in second embodiment, except light source module 201, it is identical that all the other describe most first embodiment, so do not repeat them here.The described projection arrangement 20 of second embodiment can also be a back projection projection display or a front projection display, and its light source module 201 comprises a plurality of light emitting diode 201a, 201b, 201c and a control module 201d.
In present embodiment, light emitting diode 201a, 201b, 201c are respectively red light emitting diodes 201a, blue LED 201b and green LED 201c.Control module 201d is then in order to control the Push And Release of light emitting diode 201a, 201b, 201c.When control module 201d opens red light emitting diodes 201a, blue LED 201b and green LED 201c in regular turn, with making light source module 201 export the projection source 102 of different wave lengths, be a unlatching cycle of projection arrangement 20.When control module 201d closes light emitting diode 201a, 201b, 201c, then light source module 201 will not exported projection source 102, be a sense cycle of projection arrangement 20.In sum, by opening and closing light emitting diode 201a, 201b, 201c in regular turn, projection arrangement 20 will periodically switch between unlatching cycle and sense cycle.
What this need specify be, the present invention does not limit by red light emitting diodes 201a, blue LED 201b and green LED 201c, makes light source module 201 export the projection source 102 of different wave lengths.Affiliated technical field has knows that usually the knowledgeable also can be directly by the single light emitting diode with switchable wavelength function or any other luminophor with identical function, make light source module 201 export the projection source 102 of different wave lengths, so do not repeat them here.
Following paragraph will illustrate that first embodiment and the described projection arrangement 10 of second embodiment, 20 judge that the difference of the position of luminous point on the projected picture that projection screen 13 shows with infrared ray 104 implements aspect by Fig. 3 A to Fig. 3 B, Fig. 4 A to Fig. 4 E and Fig. 5 A to Fig. 5 E.
As shown in Figure 3A, it draws the synoptic diagram of the digital minitype reflector element 103b of module 103 for photoconduction, and it has 16 catoptrons, and these catoptrons have 2 with formation
2* 2
2An array of individual pixel.And the luminous point with infrared ray 104 will be projected to the catoptron wherein of digital minitype reflector element 103b when projection arrangement 10,20 sense cycle.Fig. 3 B then illustrates the corresponding detection signal 106 of each catoptron of digital minitype reflector element 103b.In first embodiment and second embodiment, digital minitype reflector element 103b is formed by 16 catoptrons to have 2
2* 2
2An array of individual pixel, accordingly, detection signal 106 will be formed by 5 pulse signals, and then constitute the signal with 5 positions.
What need to specify is, the present invention does not limit digital minitype reflector element 103b and needs be formed by 16 catoptrons and have 2
2* 2
2The array of individual pixel.Affiliated technical field has knows that usually the knowledgeable can also dispose the catoptron of varying number in digital minitype reflector element 103b, is for example formed by 256 catoptrons to have 2
4* 2
4The array of individual pixel to reach the function of digital minitype reflector element 103b, at this moment, has to be formed by 256 catoptrons and has 2
4* 2
4In the projection arrangement 10,20 of the digital minitype reflector element 103b of the array of individual pixel, will have the detection signal 106 that is formed by 9 pulse signals, and and then constitute the signal with 9 positions.
Fig. 4 A to Fig. 4 E then illustrates first embodiment and the described projection arrangement 10 of second embodiment, 20 digital minitype reflector element 103b carries out a spatial modulation stroke in sense cycle, and in order to wherein a kind of enforcement aspect of the position of luminous point on the projected picture that projection screen 13 shows of judging infrared ray 104.Shown in Fig. 4 A, treatment circuit 109 will be in the spatial modulation stroke that sense cycle is carried out, export one first switching signal 110, to open among the digital minitype reflector element 103b, all catoptrons of array 4 (oblique line is partly), this moment, photodetector 105 will be through among the digital minitype reflector element 103b, the catoptron of array 4, detect the luminous point with infrared ray 104, and output has one first pulse signal of high level to treatment circuit 109.Accordingly, treatment circuit 109 is to be arranged in array 4 with the luminous point that judgement has infrared ray 104.
Subsequently, shown in Fig. 4 B, treatment circuit 109 is divided into a first area 4a and a second area 4b namely according to first direction (being directions X) with array 4.Then treatment circuit 109 will export a second switch signal 112, opening among the digital minitype reflector element 103b, and the catoptron of first area 4a (oblique line is partly), and close the catoptron (blank part) of second area 4b.At this moment, photodetector 105 will be through among the digital minitype reflector element 103b, and the catoptron of first area 4a detects the luminous point with infrared ray 104, and output has one second pulse signal of high level to treatment circuit 109.Accordingly, treatment circuit 109 is to be arranged in first area 4a with the luminous point that judgement has infrared ray 104.
Then, shown in Fig. 4 C, treatment circuit 109 is more further according to first direction (being directions X), and the first area 4a that will have the luminous point place of infrared ray 104 is divided into another first area 4a1 and another second area 4a2.Then treatment circuit 109 will export one the 3rd switching signal 114, opening among the digital minitype reflector element 103b, and the catoptron of first area 4a1 (oblique line is partly), and close the catoptron (blank part) of second area 4a2.At this moment, be positioned at the second area 4a2 of digital minitype reflector element 103b because of the luminous point with infrared ray 104, make photodetector 105 can't detect the luminous point with infrared ray 104, photodetector 105 has low level one the 3rd pulse signal to treatment circuit 109 with output.Accordingly, treatment circuit 109 is to be arranged in second area 4a2 with the luminous point that judgement has infrared ray 104.
For another example shown in Fig. 4 D, treatment circuit 109 will according to the second direction (being Y-direction) of first direction quadrature, the second area 4a2 that will have the luminous point place of infrared ray 104 is divided into one the 3rd regional 4c and one the 4th regional 4d.Then treatment circuit 109 will export one the 4th switching signal 116, opening among the digital minitype reflector element 103b, and the catoptron of the 3rd regional 4c (oblique line is partly), and close the catoptron (blank part) of the 4th regional 4d.At this moment, be positioned at the 4th regional 4d of digital minitype reflector element 103b because of the luminous point with infrared ray 104, make photodetector 105 can't detect the luminous point with infrared ray 104, photodetector 105 has low level one the 4th pulse signal to treatment circuit 109 with output.Accordingly, treatment circuit 109 is to be arranged in the 4th regional 4d with the luminous point that judgement has infrared ray 104.
Subsequently, shown in Fig. 4 E, treatment circuit 109 is further according to second direction (being Y-direction), and the 4th regional 4d that will have the luminous point place of infrared ray 104 is divided into another the 3rd regional 4d1 and another the 4th regional 4d2.Then treatment circuit 109 will export one the 5th switching signal 118, opening among the digital minitype reflector element 103b, and the catoptron of the 3rd regional 4d1 (oblique line is partly), and close the catoptron (blank part) of the 4th regional 4d2.At this moment, photodetector 105 will be through among the digital minitype reflector element 103b, and the catoptron of the 3rd regional 4d1 detects the luminous point with infrared ray 104, and output has one the 5th pulse signal of high level to treatment circuit 109.Accordingly, treatment circuit 109 is to be arranged in the 3rd regional 4d1 with the luminous point that judgement has infrared ray 104.
In sum, aforementioned each catoptron will be in the spatial modulation stroke, according to the sequential of first switching signal 110, second switch signal 112, the 3rd switching signal 114, the 4th switching signal 116 and the 5th switching signal 118 for the treatment of circuit 109 output, carry out a series of switch motion.Photodetector 105 will produce in regular turn have high level " 1 " first pulse signal, have high level " 1 " second pulse signal, have the 3rd pulse signal of low level " 0 ", the 5th pulse signal that has the 4th pulse signal of low level " 0 " and have high level " 1 "; That is has a detection signal 160 of 5 positions " 11001 ".At last, treatment circuit 109 is about to have the detection signal 160 of 5 positions " 11001 ", corresponds to 2
2* 2
2Individual pixel one of them, and judge the position of luminous point on the projected picture that projection screen 13 shows with infrared ray 104 according to this.
What need special instruction is that in the enforcement aspect that Fig. 4 A to Fig. 4 E illustrates, the position of luminous point on the projected picture that projection screen 13 shows with infrared ray 104 is the position that second area 4a2 is overlapped in the 3rd regional 4d1.According to different situations, the position of luminous point on the projected picture that projection screen 13 shows with infrared ray 104 also may be overlapped in the position of the 4th regional 4d2 for second area 4a2; First area 4a is overlapped in the position of the 3rd regional 4c or the position that first area 4a is overlapped in the 4th regional 4d etc., so do not repeat them here.
Fig. 5 A to Fig. 5 E then illustrates first embodiment and the described projection arrangement 10 of second embodiment, 20 digital minitype reflector element 103b carry out a spatial modulation stroke in sense cycle another kind and implements aspect.Specifically, first switching signal 110, second switch signal 112, the 3rd switching signal 114, the 4th switching signal 116 and the 5th switching signal 118 that will export in regular turn for the treatment of circuit 109; All catoptrons of digital minitype reflector element 103b will carry out a switch motion according to a sequential of aforementioned a plurality of switching signals.
Shown in Fig. 5 A, digital minitype reflector element 103b will be in response to first switching signal 110, open all catoptrons (oblique line partly) of array 5, this moment, photodetector 105 will be through among the digital minitype reflector element 103b, the catoptron of array 5, detect the luminous point with infrared ray 104, and obtain one first pulse signal with high level.
Subsequently, shown in Fig. 5 B, array 5 will according to first direction (being directions X), be divided into a first area 5a1 and a second area 5b1 in response to second switch signal 112; Digital minitype reflector element 103b opens the catoptron (oblique line partly) of first area 5a1 then in response to second switch signal 112, and closes the catoptron (partly blank) of second area 5b1.At this moment, photodetector 105 will be through among the digital minitype reflector element 103b, and the catoptron of first area 5a1 detects the luminous point with infrared ray 104, and obtains one second pulse signal with high level.
Then, shown in Fig. 5 C, array 5 will according to first direction (being directions X), be divided into another first area 5a2 and another second area 5b2 in response to the 3rd switching signal 114; Digital minitype reflector element 103b opens the catoptron (oblique line partly) of first area 5a2 then in response to second switch signal 112, and closes the catoptron (partly blank) of second area 5b2.At this moment, be positioned at the second area 5b2 of digital minitype reflector element 103b because of the luminous point with infrared ray 104, make photodetector 105 can't detect the luminous point with infrared ray 104, accordingly, photodetector 105 will be obtained has low level one the 3rd pulse signal.
For another example shown in Fig. 5 D, array 5 will be in response to the 4th switching signal 116, according to the second direction (being Y-direction) of first direction quadrature, be divided into one the 3rd regional 5c1 and one the 4th regional 5d1; Digital minitype reflector element 103b opens the catoptron (oblique line partly) of the 3rd regional 5c1 then in response to the 4th switching signal 116, and closes the catoptron (partly blank) of the 4th regional 5d1.At this moment, be positioned at the 4th regional 5d1 of digital minitype reflector element 103b because of the luminous point with infrared ray 104, make photodetector 105 can't detect the luminous point with infrared ray 104, accordingly, photodetector 105 will be obtained has low level one the 4th pulse signal.
Subsequently, shown in Fig. 5 E, array 5 will according to second direction (being Y-direction), be divided into another the 3rd regional 5c2 and another the 4th regional 5d2 in response to the 5th switching signal 118; Digital minitype reflector element 103b opens the catoptron (oblique line partly) of the 3rd regional 5c2 then in response to the 5th switching signal 118, and closes the catoptron (partly blank) of the 4th regional 5d2.At this moment, photodetector 105 will be through among the digital minitype reflector element 103b, and the catoptron of the 3rd regional 5c2 detects the luminous point with infrared ray 104, and obtains one the 5th pulse signal with high level.
In sum, photodetector 105 will obtain in regular turn have high level " 1 " first pulse signal, have high level " 1 " second pulse signal, have the 3rd pulse signal of low level " 0 ", the 5th pulse signal that has the 4th pulse signal of low level " 0 " and have high level " 1 "; That is has a detection signal 160 of 5 positions " 11001 ".Subsequently, photodetector 105 detection signal 160 that will have 5 positions " 11001 " exports treatment circuit 109 to.At last, treatment circuit 109 is about to have the detection signal 160 of 5 positions " 11001 ", corresponds to 2
2* 2
2Individual pixel one of them, and judge the position of luminous point on the projected picture that projection screen 13 shows with infrared ray 104 according to this.
What need special instruction is that in the enforcement aspect that Fig. 5 A to Fig. 5 E illustrates, the position of luminous point on the projected picture that projection screen 13 shows with infrared ray 104 is the position that second area 5b2 is overlapped in the 3rd regional 5c2.According to different situations, the position of luminous point on the projected picture that projection screen 13 shows with infrared ray 104 also may be overlapped in the position of the 4th regional 5d2 for second area 5b2; First area 5a2 is overlapped in the position of the 3rd regional 5c2 or the position that first area 5a2 is overlapped in the 4th regional 5d2 etc., so do not repeat them here.
The third embodiment of the present invention is a kind of for judging that a luminous point is in the method for a position of a projected picture as shown in Figure 6.Method of the present invention is applicable to a projection arrangement, for example the described projection arrangement 10 of aforementioned first embodiment and second embodiment, 20.Projection arrangement comprises then that a camera lens, a photoconduction draw module, a photodetector, a treatment circuit and in order to produce a light source module of a projection source.
The method of judgement one luminous point in a position of a projected picture that be used for of the 3rd embodiment comprises the following step.At first, in step 601, in the unlatching cycle, export projection source.Then, in step 603, draw module and camera lens reception projection source by photoconduction, to form projected picture.Subsequently, in step 605, only produce projection source temporarily, to produce sense cycle.Execution in step 607 again, in sense cycle, see through camera lens and receive luminous point, and luminous point is reached photoconduction draw module.In step 609, after luminous point is received, photodetector will be transferred to.Then, in step 611, export a detection signal to treatment circuit according to luminous point.At last, in step 613, judge that according to detection signal luminous point is in the position of projected picture.
Except above-mentioned steps, of the present invention for judging that a luminous point also can carry out first embodiment and second embodiment the operation described and the function in the method for a position of a projected picture, under technical field have know usually the knowledgeable can be directly acquainted with of the present invention for judge a luminous point in the method for a position of a projected picture how based on above-mentioned first embodiment and second embodiment to carry out these operations and function, so do not repeat them here.
The fourth embodiment of the present invention is a kind ofly to judge that for a sense cycle luminous point is in the localization method of a position of a projected picture as shown in Figure 7.Localization method of the present invention is applicable to a projection arrangement, for example the described projection arrangement 10 of aforementioned first embodiment and second embodiment, 20.Projection arrangement comprises then that a photoconduction draws module, a photodetector and in order to produce a light source module of a projection source.Photoconduction draws module then in order to pass on luminous point and have a plurality of catoptrons, and these catoptrons form has 2
n* 2
mAn array of individual pixel, projected picture then correspond to this array.
The sense cycle that is used for of the 4th embodiment judges that a luminous point comprises the following step in the localization method of a position of a projected picture.At first, execution in step 701 in sense cycle, transmits a plurality of switching signals.Afterwards, in step 703, in response to these switching signals, make each catoptron carry out a switch motion according to a sequential.Then, in step 705, will make this photodetector produce a plurality of pulse signals in response to the switch motion of each catoptron, and transmit aforementioned pulse signal.At last, in step 707, then in response to aforementioned pulse signal, judge that luminous point is in the position of projected picture.
Following paragraph will illustrate among the 4th embodiment by Fig. 8 A to Fig. 8 B, and the switch motion how localization method carries out according to sequential by catoptron judges that the difference of the position of luminous point on projected picture with infrared ray is implemented aspect.
Fig. 8 A is among the 4th embodiment, the switch motion that localization method carries out according to sequential by catoptron, and judgement has wherein a kind of process flow diagram of implementing aspect of the position of luminous point on projected picture of infrared ray.At first, execution in step 801a in sense cycle, opens catoptron.Then, in step 803a, according to first direction, be at least one first area and at least one second area with array partition.Subsequently, in step 805a, open the catoptron of at least one first area.Execution in step 807a again closes the catoptron of at least one second area.
In step 809a, according to the second direction that is orthogonal to first direction, be at least one the 3rd zone and at least one the 4th zone with array partition.Then, in step 811a, open the catoptron at least one the 3rd zone.Subsequently, in step 813a, close at least one four-range catoptron.At last, in step 815a, according at least one first area, at least one second area, at least one the 3rd zone and at least one the 4th zone wherein two, measure luminous point in the position of projected picture.
Fig. 8 B is among the 4th embodiment, the switch motion that localization method carries out according to sequential by catoptron, and another that judge the position of luminous point on projected picture with infrared ray implemented the process flow diagram of aspect.At first, execution in step 801b in sense cycle, opens catoptron.Then, in step 803b, according to first direction, be at least one first area and at least one second area with array partition.Subsequently, in step 805b, open the catoptron of at least one first area.Execution in step 807b again closes the catoptron of at least one second area.In step 809b, namely according to aforementioned at least one first area and at least one second area wherein one, measure luminous point in a position of first direction.
In step 811b, according to the position of luminous point in first direction, with aforementioned at least one first area and at least one second area wherein one set a target area for.Afterwards, in step 813b, according to the second direction that is orthogonal to first direction, the target area is divided at least one the 3rd zone and at least one the 4th zone.Then, in step 815b, open the catoptron at least one the 3rd zone.Subsequently, in step 817b, close at least one four-range catoptron.Again in step 819b, according to aforementioned at least one the 3rd zone and at least one the 4th zone wherein one, measure luminous point in a position of second direction.At last, in step 821b, namely according to luminous point in the position of first direction and the position of second direction, measure this luminous point in the position of projected picture.
Except above-mentioned steps, of the present inventionly judge that for a sense cycle luminous point also can carry out first embodiment and second embodiment the operation described and the function in the localization method of a position of a projected picture, under technical field have know usually the knowledgeable can be directly acquainted with localization method of the present invention how based on above-mentioned first embodiment and second embodiment to carry out these operations and function, so do not repeat them here.
In sum, projection arrangement of the present invention and localization method are the switch motions by the digital minitype reflector element, to form projected picture and to measure a luminous point in the position of a projected picture.Thus, the element that can directly utilize projection arrangement itself namely to have judges that luminous point is in the position of projected picture.Accordingly, the present invention and the existing projection arrangement that possesses interaction function not only have the advantage of Miniaturizable design in comparison, more can save the required cost of charge coupled cell, to reduce production cost.
The above embodiments only are used for exemplifying enforcement aspect of the present invention, and explain technical characterictic of the present invention, are not to limit category of the present invention.Any be familiar with this operator can unlabored change or the arrangement of isotropism all belong to the scope that the present invention advocates, interest field of the present invention should be as the criterion with claim.
Claims (34)
1. a projection arrangement is used for judging a luminous point in a position of a projected picture, and this projection arrangement comprises:
One camera lens;
One photodetector;
One light source module comprises a bulb and a colour wheel, and this bulb is in order to produce a projection source, and this colour wheel is in order to produce a unlatching cycle and a sense cycle;
One photoconduction draws module, comprises a digital minitype reflector element, is used to this unlatching cycle, this projection source is converted into this projected picture, so that this camera lens throws this projected picture, and in this sense cycle, see through this camera lens and receive this luminous point, and this luminous point is directed to this photodetector; And
One treatment circuit electrically connects this photodetector;
Wherein, this photodetector draws module from this photoconduction and receives this luminous point, and in this sense cycle, exports a detection signal to this treatment circuit according to this luminous point, so that this treatment circuit judges that according to this detection signal this luminous point is in the position of this projected picture.
2. projection arrangement according to claim 1, it is characterized in that, it is to carry out a spatial modulation stroke in this sense cycle that this photoconduction draws module, so that this treatment circuit judges that according to this photodetector detected this detection signal in this spatial modulation stroke this luminous point is in the position of this projected picture.
3. projection arrangement according to claim 1, it is characterized in that, when this colour wheel when this sense cycle stops this projection source, this photodetector draws module from this photoconduction and receives this luminous point, and export this detection signal to this treatment circuit according to this luminous point, so that this treatment circuit judges that according to this detection signal this luminous point is in the position of this projected picture.
4. projection arrangement according to claim 3, it is characterized in that, this colour wheel also comprises a red section, a blue section, a green section and a black section, and this projection source is stopped that by this black section this sense cycle produces by this black section.
5. projection arrangement according to claim 2 is characterized in that, this photoconduction draws module and comprises a prism group and a spectroscope, and wherein this digital minitype reflector element is to carry out this spatial modulation stroke in this sense cycle.
6. projection arrangement according to claim 1 is characterized in that, this detection signal is made up of a plurality of pulse signal.
7. one kind is used for judging that a luminous point is in the localization method of a position of a projected picture, be applicable to a projection arrangement, this projection arrangement comprises a camera lens, a photoconduction draws module, a photodetector, a treatment circuit and a light source module, this light source module comprises a bulb and a colour wheel, this bulb is in order to produce a projection source, this photoconduction draws module and comprises a digital minitype reflector element, and this localization method comprises the following step:
Produce a unlatching cycle and a sense cycle by this colour wheel;
This projection source of output in this unlatching cycle;
Draw module and this camera lens receives this projection source to form this projected picture by this photoconduction;
In this sense cycle, end the projection of this projection source temporarily;
See through this camera lens and receive this luminous point, and this luminous point is sent to this photoconduction draws module;
After receiving this luminous point, this luminous point is transferred to this photodetector;
Export a detection signal to this treatment circuit according to this luminous point; And
Judge that according to this detection signal this luminous point is in the position of this projected picture.
8. localization method according to claim 7, it is characterized in that, in this sense cycle, the step of ending the projection of this projection source temporarily also comprises carries out a spatial modulation stroke, in order to be pursuant to detected this detection signal in this spatial modulation stroke, judge that this luminous point is in the position of this projected picture.
9. localization method according to claim 7 is characterized in that, this colour wheel also comprises a red section, a blue section, a green section and a black section, and this sense cycle is to interdict this projection source by this black section to produce.
10. localization method according to claim 7 is characterized in that, this photoconduction draws module and also comprises a spectroscope.
11. one kind is used to a sense cycle and judges that a luminous point is in the localization method of a position of a projected picture, be applicable to a projection arrangement, this projection arrangement comprises a camera lens, one photoconduction draws module, one photodetector, one treatment circuit and a light source module, this light source module comprises a bulb and a colour wheel, this bulb is in order to produce a projection source, this colour wheel is in order to produce a unlatching cycle and a sense cycle, this photoconduction draws module in order to pass on this luminous point and comprise a digital minitype reflector element, this digital minitype reflector element has a plurality of catoptrons, these catoptrons form an array, and this localization method comprises the following step:
In this unlatching cycle, this projection source is converted into this projected picture, so that this camera lens throws this projected picture;
In this sense cycle, end the projection of this projection source temporarily;
Open these catoptrons;
According to a first direction, be at least one first area and at least one second area with this array partition;
Open the catoptron of this at least one first area;
Close the catoptron of this at least one second area;
According to a second direction, be at least one the 3rd zone and at least one the 4th zone with this array partition, wherein this first direction is to be orthogonal to this second direction;
Open the catoptron in this at least one the 3rd zone;
Close this at least one four-range catoptron; And
According to this at least one first area, this at least one second area, this at least one the 3rd zone and this at least one the 4th zone wherein two, measure this luminous point in the position of this projected picture.
12. localization method according to claim 11 is characterized in that, this luminous point comes down to a position of at least one the 3rd zone in this at least one first area or this at least one second area and this or this at least one the 4th region overlapping in the position of this projected picture.
13. localization method according to claim 11, it is characterized in that, this at least one first area comes down to partly overlapping with this at least one the 3rd zone and this at least one the 4th zone respectively, and this at least one second area comes down to partly overlapping with this at least one the 3rd zone and this at least one the 4th zone respectively.
14. one kind is used to a sense cycle and judges that a luminous point is in the localization method of a position of a projected picture, be applicable to a projection arrangement, this projection arrangement comprises a camera lens, one photoconduction draws module, one photodetector, one treatment circuit and a light source module, this light source module comprises a bulb and a colour wheel, this bulb is in order to produce a projection source, this colour wheel is in order to produce a unlatching cycle and a sense cycle, this photoconduction draws module in order to pass on this luminous point and comprise a digital minitype reflector element, this digital minitype reflector element has a plurality of catoptrons, these catoptrons form an array, and this localization method comprises the following step:
In this unlatching cycle, this projection source is converted into this projected picture, so that this camera lens throws this projected picture;
In this sense cycle, end the projection of this projection source temporarily;
Open these catoptrons;
According to a first direction, be at least one first area and at least one second area with this array partition;
Open the catoptron of this at least one first area;
Close the catoptron of this at least one second area;
According to this at least one first area and this at least one second area one of them, measure this luminous point in a position of this first direction;
According to position and the second direction of this luminous point in this first direction, should at least one first area and this at least one second area one of them be divided at least one the 3rd zone and at least one the 4th zone, wherein this first direction is to be orthogonal to this second direction;
Open the catoptron in this at least one the 3rd zone;
Close this at least one four-range catoptron;
According to this at least one the 3rd zone and should be at least one the 4th regional one of them, measure this luminous point in a position of this second direction; And
In the position of this first direction and in the position of this second direction, measure this luminous point in the position of this projected picture according to this luminous point.
15. localization method according to claim 14 is characterized in that, this luminous point comes down to a position of at least one the 3rd zone in this at least one first area or this at least one second area and this or this at least one the 4th region overlapping in the position of this projected picture.
16. one kind is used to a sense cycle and judges that a luminous point is in the localization method of a position of a projected picture, be applicable to a projection arrangement, this projection arrangement comprises a camera lens, one photoconduction draws module, one light source module, one treatment circuit and a photodetector, this light source module comprises a bulb and a colour wheel, this bulb is in order to produce a projection source, this colour wheel is in order to produce a unlatching cycle and a sense cycle, this photoconduction draws module in order to pass on this luminous point and comprise a digital minitype reflector element, this digital minitype reflector element has a plurality of catoptrons, and these catoptrons form has 2
n* 2
mAn array of individual pixel, this projected picture are to correspond to this array, and this localization method comprises the following step:
In this unlatching cycle, this projection source is converted into this projected picture, so that this camera lens throws this projected picture;
In this sense cycle, end the projection of this projection source temporarily;
In this sense cycle, transmit a plurality of switching signals;
In response to these switching signals, respectively this catoptron carries out a switch motion according to a sequential;
In response to the respectively switch motion of this catoptron, make this photodetector produce a plurality of pulse signals, and transmit these pulse signals; And
In response to these pulse signals, judge that this luminous point is in the position of this projected picture.
17. localization method according to claim 16 is characterized in that, these pulse signals form a detection signal, this detection signal be by n+m+1 the position constitute, and correspond to these 2
n* 2
mIndividual pixel one of them.
18. localization method according to claim 16 is characterized in that, this detection signal be a plurality of binary numerals one of them, these binary numerals correspond to respectively these 2
n* 2
mIndividual pixel.
19. a projection arrangement is used for judging a luminous point in a position of a projected picture, this projection arrangement comprises:
One camera lens;
One photodetector;
One light source module comprises at least one light emitting diode and a control module, and this at least one light emitting diode is in order to produce a projection source, and this control module is in order to control a switch of this at least one light emitting diode, to produce a unlatching cycle and a sense cycle;
One photoconduction draws module, comprises a digital minitype reflector element, is used to this unlatching cycle, this projection source is converted into this projected picture, so that this camera lens throws this projected picture, and in this sense cycle, see through this camera lens and receive this luminous point, and this luminous point is directed to this photodetector; And
One treatment circuit electrically connects this photodetector;
Wherein, this photodetector draws module from this photoconduction and receives this luminous point, and in this sense cycle, exports a detection signal to this treatment circuit according to this luminous point, so that this treatment circuit judges that according to this detection signal this luminous point is in the position of this projected picture.
20. projection arrangement according to claim 19, it is characterized in that, it is to carry out a spatial modulation stroke in this sense cycle that this photoconduction draws module, so that this treatment circuit judges that according to this photodetector detected this detection signal in this spatial modulation stroke this luminous point is in the position of this projected picture.
21. projection arrangement according to claim 19, it is characterized in that, when this control module when this sense cycle is closed this at least one light emitting diode, this photodetector draws module from this photoconduction and receives this luminous point, and export this detection signal to this treatment circuit according to this luminous point, so that this treatment circuit judges that according to this detection signal this luminous point is in the position of this projected picture.
22. projection arrangement according to claim 20 is characterized in that, this photoconduction draws module and comprises a prism group and a spectroscope, and wherein this digital minitype reflector element is to carry out this spatial modulation stroke in this sense cycle.
23. projection arrangement according to claim 19 is characterized in that, this detection signal is made up of a plurality of pulse signal.
24. one kind is used for judging that a luminous point is in the localization method of a position of a projected picture, be applicable to a projection arrangement, this projection arrangement comprises a camera lens, a photoconduction draws module, a photodetector, a treatment circuit and a light source module, this light source module comprises at least one light emitting diode and a control module, at least one light emitting diode is in order to produce a projection source, this photoconduction draws module and comprises a digital minitype reflector element, and this localization method comprises the following step:
Control a switch of this at least one light emitting diode by this control module, produce a unlatching cycle and a sense cycle;
This projection source of output in this unlatching cycle;
Draw module and this camera lens receives this projection source to form this projected picture by this photoconduction;
In this sense cycle, end the projection of this projection source temporarily;
See through this camera lens and receive this luminous point, and this luminous point is sent to this photoconduction draws module;
After receiving this luminous point, this luminous point is transferred to this photodetector;
Export a detection signal to this treatment circuit according to this luminous point; And
Judge that according to this detection signal this luminous point is in the position of this projected picture.
25. localization method according to claim 24, it is characterized in that, in this sense cycle, the step of ending the projection of this projection source temporarily also comprises carries out a spatial modulation stroke, in order to be pursuant to detected this detection signal in this spatial modulation stroke, judge that this luminous point is in the position of this projected picture.
26. localization method according to claim 24 is characterized in that, this photoconduction draws module and also comprises a spectroscope.
27. one kind is used to a sense cycle and judges that a luminous point is in the localization method of a position of a projected picture, be applicable to a projection arrangement, this projection arrangement comprises a camera lens, one photoconduction draws module, one photodetector, one treatment circuit and a light source module, this light source module comprises at least one light emitting diode and a control module, this at least one light emitting diode is in order to produce a projection source, this control module is in order to control a switch of this at least one light emitting diode, to produce a unlatching cycle and a sense cycle, this photoconduction draws module in order to pass on this luminous point and comprise a digital minitype reflector element, this digital minitype reflector element has a plurality of catoptrons, these catoptrons form an array, and this localization method comprises the following step:
In this unlatching cycle, this projection source is converted into this projected picture, so that this camera lens throws this projected picture;
In this sense cycle, end the projection of this projection source temporarily;
Open these catoptrons;
According to a first direction, be at least one first area and at least one second area with this array partition;
Open the catoptron of this at least one first area;
Close the catoptron of this at least one second area;
According to a second direction, be at least one the 3rd zone and at least one the 4th zone with this array partition, wherein this first direction is to be orthogonal to this second direction;
Open the catoptron in this at least one the 3rd zone;
Close this at least one four-range catoptron; And
According to this at least one first area, this at least one second area, this at least one the 3rd zone and this at least one the 4th zone wherein two, measure this luminous point in the position of this projected picture.
28. localization method according to claim 27 is characterized in that, this luminous point comes down to a position of at least one the 3rd zone in this at least one first area or this at least one second area and this or this at least one the 4th region overlapping in the position of this projected picture.
29. localization method according to claim 27, it is characterized in that, this at least one first area comes down to partly overlapping with this at least one the 3rd zone and this at least one the 4th zone respectively, and this at least one second area comes down to partly overlapping with this at least one the 3rd zone and this at least one the 4th zone respectively.
30. one kind is used to a sense cycle and judges that a luminous point is in the localization method of a position of a projected picture, be applicable to a projection arrangement, this projection arrangement comprises a camera lens, one photoconduction draws module, one photodetector, one treatment circuit and a light source module, this light source module comprises at least one light emitting diode and a control module, this at least one light emitting diode is in order to produce a projection source, this control module is in order to control a switch of this at least one light emitting diode, to produce a unlatching cycle and a sense cycle, this photoconduction draws module in order to pass on this luminous point and comprise a digital minitype reflector element, this digital minitype reflector element has a plurality of catoptrons, these catoptrons form an array, and this localization method comprises the following step:
In this unlatching cycle, this projection source is converted into this projected picture, so that this camera lens throws this projected picture;
In this sense cycle, end the projection of this projection source temporarily;
Open these catoptrons;
According to a first direction, be at least one first area and at least one second area with this array partition;
Open the catoptron of this at least one first area;
Close the catoptron of this at least one second area;
According to this at least one first area and this at least one second area one of them, measure this luminous point in a position of this first direction;
According to position and the second direction of this luminous point in this first direction, should at least one first area and this at least one second area one of them be divided at least one the 3rd zone and at least one the 4th zone, wherein this first direction is to be orthogonal to this second direction;
Open the catoptron in this at least one the 3rd zone;
Close this at least one four-range catoptron;
According to this at least one the 3rd zone and should be at least one the 4th regional one of them, measure this luminous point in a position of this second direction; And
In the position of this first direction and in the position of this second direction, measure this luminous point in the position of this projected picture according to this luminous point.
31. localization method according to claim 30 is characterized in that, this luminous point comes down to a position of at least one the 3rd zone in this at least one first area or this at least one second area and this or this at least one the 4th region overlapping in the position of this projected picture.
32. one kind is used to a sense cycle and judges that a luminous point is in the localization method of a position of a projected picture, be applicable to a projection arrangement, this projection arrangement comprises a camera lens, one photoconduction draws module, one light source module, one treatment circuit and a photodetector, this light source module comprises at least one light emitting diode and a control module, this at least one light emitting diode is in order to produce a projection source, this control module is in order to control a switch of this at least one light emitting diode, to produce a unlatching cycle and a sense cycle, this photoconduction draws module in order to pass on this luminous point and comprise a digital minitype reflector element, this digital minitype reflector element has a plurality of catoptrons, and these catoptrons form has 2
n* 2
mAn array of individual pixel, this projected picture are to correspond to this array, and this localization method comprises the following step:
In this unlatching cycle, this projection source is converted into this projected picture, so that this camera lens throws this projected picture;
In this sense cycle, end the projection of this projection source temporarily;
In this sense cycle, transmit a plurality of switching signals;
In response to these switching signals, respectively this catoptron carries out a switch motion according to a sequential;
In response to the respectively switch motion of this catoptron, make this photodetector produce a plurality of pulse signals, and transmit these pulse signals; And
In response to these pulse signals, judge that this luminous point is in the position of this projected picture.
33. localization method according to claim 32 is characterized in that, these pulse signals form a detection signal, this detection signal be by n+m+1 the position constitute, and correspond to these 2
n* 2
mIndividual pixel one of them.
34. localization method according to claim 32 is characterized in that, this detection signal be a plurality of binary numerals one of them, these binary numerals correspond to respectively these 2
n* 2
mIndividual pixel.
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| CN 201010161332 CN102214016B (en) | 2010-04-12 | 2010-04-12 | Projection device and positioning method for judging position of light spot in projection picture |
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|---|---|---|---|---|
| CN2664064Y (en) * | 2003-12-29 | 2004-12-15 | 昆盈企业股份有限公司 | Pointer input device |
| TW200512528A (en) * | 2003-09-16 | 2005-04-01 | Delta Electronics Inc | Digital light processing projector |
| CN1605927A (en) * | 2003-10-10 | 2005-04-13 | 日本电气视象技术株式会社 | Projector and projector accessory |
| CN101627354A (en) * | 2007-03-08 | 2010-01-13 | Lunascape株式会社 | Optical projection system |
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2010
- 2010-04-12 CN CN 201010161332 patent/CN102214016B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200512528A (en) * | 2003-09-16 | 2005-04-01 | Delta Electronics Inc | Digital light processing projector |
| CN1605927A (en) * | 2003-10-10 | 2005-04-13 | 日本电气视象技术株式会社 | Projector and projector accessory |
| CN2664064Y (en) * | 2003-12-29 | 2004-12-15 | 昆盈企业股份有限公司 | Pointer input device |
| CN101627354A (en) * | 2007-03-08 | 2010-01-13 | Lunascape株式会社 | Optical projection system |
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