TW201142466A - Interactive projection system and system control method thereof - Google Patents

Abstract

An interactive projection system adapted to identify at least two light points respectively generated by at least two light emitters on a screen is provided. The interactive projection system includes a projecting unit, an image sensing unit, and a control unit. The projecting unit projects an image frame onto the screen. The image sensing unit senses the light points on the screen, wherein each of the light points has a parameter, and the parameters of each light point are different. The control unit respectively identifies and distinguishes the light points according to the parameters and further performs a system operation corresponding to at least one of the light points. Furthermore, a system control method is also provided.

Description

201142466 HD-2010-0005-TW 34022twf.doc/I VI. Description of the invention: [Technical field to which the invention pertains] 9 The present invention relates to a projection system and a control method thereof, and in particular to a multi-light Point-operated interactive projection system and its system control method. , [Previous technology] In today's information age, human dependence on electronic products is the day ^ ° notebook computer, mobile phone, digital walkman, optical projector: ^ sub-products have become modern life red plantation Indispensable application

The Sis 2 electronic products all have an input interface for inputting the second two's to enable the (4) line of the electronic product to automatically execute this command. Putting on the user-friendly operation mode 'manufacturer starts to install the panel in the electronic package, etc.) or the touch panel (the touch panel', so that the time can be used to adjust the control panel or touch panel Wheel man command. Use touch finger or stylus and touch person on the touch. Day (1) users use most profit-making behavior to make the contact or the change of contact or the amount of touch generated between the wheel interface ^=Electronic (4) The coordinates of the touch can be used to determine the user's touch gesture. However, in the optical second/potential, the corresponding operation function of the light is used. Or the touch panel money, if the user has to pass the touchpad If the user can use 'is unrealistic. On the screen of the shadow system, such as the projection of the light spot, and directly in the operation of the ordering system, it can not only subvert the tradition to make 201142466

HD-2010.0005.tw 34022twfd〇c/I Keyboard input method, advantage. It is also possible to greatly enhance the use of the projection system. [Inventive content], the invention provides a kind of silk projection secret, which can simultaneously provide a plurality of financial projection systems by using a plurality of light spots on the projection system. System operation on the screen. The present invention provides a system control method for simultaneously providing a plurality of foreheads to perform system operations on the screen of the projection system by recognizing a plurality of spots on the projection $. The present invention provides an interactive projection system adapted to recognize that at least two optical emitters are difficult to divide (four) at least two wires. The interactive projection system includes a projection unit, an image sensing unit, and a control unit. The projection unit is used to project the image to the screen. The image sense is used to sense the spot on the screen, wherein each spot has a parameter, and the parameters of each spot are different from each other. The control unit separately identifies and distinguishes the light spots according to the parameters of the light spots, and operates according to at least one of the light spots. It is intended that the present invention provides a system control method suitable for an interactive projection system in which an interactive projection system is used to identify at least two spots of light produced by at least two light emitters on a screen. The system control method includes the following steps. Project an image to the screen. A spot on the screen is sensed, wherein each spot has a parameter and the parameters of each spot are different from each other. The spots are identified and distinguished based on the parameters of the spot. According to at least one of the light spots

One of the 201142466 HD-2U10-0005-TW 34022twf.doc/I to perform the corresponding system operation. Based on the above, in the embodiment of the present invention, the interactive projection system can simultaneously provide multiple users to perform line operations on the material of the projection line by recognizing a plurality of light spots on the screen of the projection system, which can not only subvert the traditional The use of the keyboard input method can greatly enhance the convenience of using projection. The above described features and advantages of the present invention will become more apparent from the description of the appended claims. Embodiments FIG. 1 illustrates an interactive projection system according to an embodiment of the present invention. Referring to FIG. 1, in the present embodiment, the interactive projection system 100 is adapted to recognize at least two light spots P1, P2 respectively generated on at least one of the light emitting cells LP1, LP2 on a screen 11''. The interactive projection system 1 includes a projection unit 12A, an image sensing unit 130, and a control unit 14A. Here, the control unit 140 is connected to the projection unit 120 and the image sensing unit 13 by a connection method such as a data bus, a wired network, or a wireless network, thereby controlling its operation. In this embodiment, the control unit 140 includes a host system 142 and a video decoder unit 144 (position decoder). The host system 142 is configured to receive a multimedia material and control the projection unit 120 to project the image corresponding to the multimedia material to the screen 110. Here, the host system 142 is, for example, a universal serial bus (USB) or a video graphics array (Video Graphic).

201142466 HD-2U1 υ-0005-TW 34022twf.doc/I

The input interface of the Array, VGA, signal line or the like receives the multimedia material, or the multimedia data is read by a Secure Digital card (SD card), but the present invention is not limited thereto. In the present embodiment, the host system 142 is, for example, a computer system such as a notebook or a desktop personal computer. Here, the video decoding unit 144 is independently disposed outside the host system 142, but the present invention is not limited thereto. In other embodiments, image decoding unit 144 may also be integrated within host system 142.

In the present embodiment, the projection unit 120 is used to project the image to be displayed by the host system 142 to the screen 110. Here, the projection unit 120 is, for example, a liquid crystal display projector (LCD projector), a digital optical processing projector (digital Ught (4) (2), a liquid crystal projector (DLP proj ector)) or a reflective liquid crystal projector (liquid crystd on silicon projector). , LCOS projector) and other projection devices. In this embodiment, the plurality of users U1, U2 can project the spots Pi, P2 onto the screen 110 by means of light emitters lpi, LP2, such as laser pointers, for system operation, and Interactions between each other occur during the operation. Here, the system operation is, for example, the user selects the icon (ic〇n) of the image on the screen 110 by using the light spot P and P2, so that the host system and the system 142 select the icon or execute the corresponding icon. Operation. Alternatively, the system operation is, for example, that the user, U2 moves on the window scroll (scr〇ll) of the image displayed on the screen 110 with the light dots ρι, p2, and causes the host system 142 to scroll on the screen 11G ( It means (1) the inner valley of the window. Or, the system operation is, for example, the user Ui, U2 with the light point ρι, 201142466 HD-2010-0005-TW 34022twf.doc/I click on the object on the screen 11G, and move The light spot is configured to cause the host system 142 to perform the movement on the screen according to the movement of the light spot. In detail, in the embodiment, the image sensing unit 130 is configured to sense the display of the screen no. The image surface and the light spots ρι, p2 on the screen. It is worth noting that the light points P1 and p2 of the real thing have a shape of not (four) or a different color. Here, when the shapes of the filament points P1 and P2 are the same, It can have different colors; if the light points P1, P2 _ hue (four), the pots can have different (10) shapes. Of course, the light spots P1 and P2 can also have the same shape and different colors at the same time. 140 can identify and distinguish the projection screen according to the position or color of the spot Different light spots are used to enable the host system 142 to perform a system operation corresponding to the light spot ρ. In other words, the image sensing unit 13 is configured to sense the image surface and the first light on the screen 110. Point Ρ1 and second spot Ρ2, wherein the first spot Η has a first parameter (shape or color), and the second spot ρ2 has a second parameter (different from the shape or color of the first spot Ρ1) Controlling the first element and the second parameter, respectively identifying and distinguishing the first light spot ρι and the second light spot P2' to perform a system operation corresponding to the first spot 第二 or the second spot p2 It should be noted that the parameter according to the control unit 140 for identifying the light spot is not limited to the shape or color exemplified herein. In the present invention, the light spot parameter by which the control unit is identified may be any enough to distinguish the projection at ^ The parameters of the plurality of light spots on the screen. In this embodiment, at least two light emitters are respectively generated on the screen.

At least two light spots of 201142466 HD-2010-0005-TW 34022twf.doc/I are exemplified by two light spots (first light spot pi and second light spot), but the present invention is not limited to the other embodiments. Control 1) can be used to identify a plurality of light spots, each of which is projected on the screen with a parameter, and the parameters of each light point are different from each other. The control unit can separately identify and distinguish the projections on the screen from the parameters of the light spot: therefore, the control element operates according to at least the system of the plurality of light dots. Figure 2 illustrates the different intentions of the light emitter of Figure 1 projected onto the screen. Referring to FIG. 2 and FIG. 2, in the implementation, the light point ρι, = shape is, for example, a circular 'cross shape or = angle opening' as shown in FIG. 2, and the colors of the points PI, P2 are, for example, red, Green or blue. Here, the shape or color of = PI, P2 may be the same or different, but it should be noted that the light spot P1, 1 > 2 of the embodiment differs in at least one of the shapes or colors. Therefore, the image sensing unit 130 can sense the parameters (such as shape, color, or brightness) of the screen i 1 昼 and the on-screen spots η, P2 and transmit them to the control sheet S140. Then, the control unit finally parses the parameter of the image displayed on the screen 11G and the parameter P on the screen by the image decoding unit 144, so that the host system 142 can separately identify and distinguish different projection screens according to the vertical analysis result. The light point ρι, , hit, and perform the system operation corresponding to the spot Η or P2. In addition, in the embodiment of the factory, the master age system and the system 142 may include an image-recognition type, and the image sensing unit D0 and the image decoding unit & 144 respectively identify and distinguish the image surface displayed on the screen U0 and Spots P1, P2 on the screen. In this embodiment, the image sensing unit 130 is, for example, a charge light unit 201142466

Sensing of xxl/-^.vi 0-0005-TW 34022twf.doc/I (charge coupled device, CCD) or complementary metal-oxide-semiconductor sens〇r (CMOS sensor) Device. In addition, in the present embodiment, the projection unit 120 and the image sensing unit 130 are integrated and substantially disposed at the same position. At the same time, the projection focal length of the projection unit 120 is substantially the same as the sensing focal length of the image sensing unit 13A. Here, the projection focal length of the projection unit 例如20 is, for example, the focal length of the projection lens, and the sensing focal length of the image sensing grass 130 is, for example, the focal length of a lens such as a CCD or the focal length of the lens of the CMOS sensing element. Therefore, the image sensing unit 130 does not need to use the image recognition program to re-define the size of the projection surface, thereby reducing the complexity of the image decoding unit 144 for analyzing the image plane and the light spot parameters, and the complexity of the image recognition program processing. In this embodiment, the projection unit 12 and the image sensing unit 13 are integrated. In another embodiment, the control unit can be further integrated with the projection unit and the image sensing unit as an interactive projector. FIG. 3 illustrates an interactive projection system according to another embodiment of the present invention. Referring to FIG. 3, in the embodiment, the control unit is further integrated with the projection unit and the image sensing unit as an interactive projection device. 4 is a block diagram showing the interactive projection apparatus of FIG. 3. Referring to FIG. 3 and FIG. 4, in the embodiment, the interactive projection device 35 includes a landscape unit 320, an image sensing unit 330, and a control unit 340. Here, the control unit 340 includes a processing unit 342, an image decoding unit 344, an input interface 346, and a network connection device 348. 201142466

HD-20 l〇-〇〇〇5-TW 34022twf.doc/I In this embodiment, the processing unit 342 is used in conjunction with the image decoding unit 344 to separately identify and distinguish the image plane and the light spot parameters on the screen, and execute System operation. The input interface 346 is, for example, a universal serial stream, a video map array line or a secure digital memory card slot, so that the control unit 340 can thereby read or receive multimedia material. The network connection device is used to connect to a wired network or a wireless network' so that the control unit 34 can be connected to other electronic devices. In addition, the same or similar portions of the present embodiment as those of the embodiment of Fig. 1 can be sufficiently taught, suggested, and implemented by the description of the embodiment of Fig. 1, and therefore will not be described again. 〇, FIG. 5 illustrates an interactive projection system according to another embodiment of the present invention. Referring to FIG. 5, in the embodiment, the control unit 54 is, for example, a notebook type, and the image sensing unit 530 is, for example, a webcam integrated in a notebook computer or a notebook. An external network camera. 6 is a block diagram of the interactive projection system of FIG. 5. For the sake of explanation, FIG. 6 shows a notebook type 542, a video decoding unit 544, and a network camera 53 以 in different functional blocks, but the decoding unit 544 and the network camera 530 are integrated into the note. Referring to FIG. 6 in the present embodiment, in the present embodiment, the notebook computer 542 senses the image plane and the light spots ρι', P2' displayed on the screen 51 by the network photography, and by the image decoding unit thereof. 544 analyzes the parameters of the image plane and the light spot, P2, so that the notebook computer 542 can identify and distinguish different light spots ρι, p2 on the projection screen according to the analysis result thereof, and execute the corresponding light 201142466 called - dip 10-0005 -TW 34022twf_doc/r or: 2 system operation. In addition, in the present embodiment, the notebook type can be used to identify the image display points PI, P2 displayed on the screen by the network camera 530 and the shirt image decoding unit 544. It should be noted that in the present embodiment, the projection pitch of the projection unit 52 is not the same as the sensing focal length of the network camera 530. For example, the projection range of the projection 〇 52 小于 is smaller than the sensing range of the network camera 53 〇 (image sensing unit). Therefore, the notebook computer 542 can recognize and capture information in the projection range according to the signal transmitted by the network camera 53. That is to say, the image recognition program installed in the notebook computer 542 can automatically recognize the size of the projection surface to match different projection distances. In addition, the same or similar parts of the embodiment as those of the embodiment of Fig. 1 can be sufficiently taught, suggested and implemented by the description of the embodiment of Fig. 1, and therefore will not be described again. FIG. 7 is a flow chart of a method for operating a system according to an embodiment of the invention. Referring to FIG. 1 and FIG. 7, first, in step S700, the projection unit 12 projects the image plane to be displayed by the control unit 140 on the screen U〇, and the user uses the light emitters LP1, LP2 to light the light. The dot 2 is projected on the screen 110. Next, in step S702, the image sensing unit 130 senses the brightness and color or shape of the image plane and the light spots P1, P2 displayed on the screen 110. After the light spot P1 is taken as an example, in step S704, if the brightness of the light spot P1 is greater than a brightness threshold value, the image sensing unit 130 determines that the light spot P1 at this time is an effective light spot, and The image sensed 昼11 201142466

HD-2010-0005-TW 34〇22twf.doc/I face and sent to the control unit (10) for analysis, such as step _6. Wei Di 'in step S704, if the light spot p2 = time', the image sensing unit 13 determines that the effective two points are at this time, and the image picture and the light spot of the sensation _ are controlled by the control unit 140. Analysis, as in step S706. ^ It should be noted that, in the case of Lin Shi _ t, if the degree of exemption of 総p - is greater than the threshold value of brightness, the process of step #706 is performed. ...the method of the prophecy. Conversely, if the brightness of the light spot Ρ^2 is less than the 1 boundary value, the image sensing unit 130 will return, 昼 the image surface and the sensing of the light spot. /02, proceeding continues, in step S708, the control unit 单元 unit 144 analyzes the image plane and the light point ρι, ρ image decoding brightness and color or shape, and one of the light spots ρι, ρb; Like the position of the face. One of 乂/, then, in step S710, the control unit 14 分 according to the analysis result of the image decoding unit 144, divides 9, the different spots Η, Ρ 2 on the screen of the system 142, and executes 0 j to distinguish Project the system operation of which -. wTLiiPi, P2 at least the light point == judgment; if; ^, according to the brightness of the light point to determine the execution or 4 two == P2 system operation. Alternatively, the host system 14: first points P1 and low to determine the direction to perform the corresponding spot P1 and P2 degrees.

201142466 HD-2010-0005-TW 34022twf.doc/I For example, when the brightness of the standby point P1 is greater than the brightness of the spot p2, the host system 142 will read the light point pi n or not execute the corresponding light. Point P2 system operation. When the main (4) chooses to execute the corresponding spot P2± ^ ', (4) the ancient w is used as the host system 142, according to the low point of the first point, the system operation corresponding to the spot 依 is executed in sequence, and the system operation corresponding to the spot Ρ 2 . ', ' /, / In the present embodiment, the system operation method is taken as an example of the interactive projection system 100 of FIG. 1 , and the projection focal length and image sensing of the projection unit 亓ηη:: The sensed focal length of 130 is the same, so the image sensing unit 13 does not need to newly define the size of the projected face, but the invention is not limited thereto. In another embodiment, the method (4) of the present invention can be implemented in the interactive projection system 500 of FIG. FIG. 8 is a flow chart showing a method of operating a system according to another embodiment of the present invention. In the embodiment of the present invention, the system operation method is, for example, the interactive projection system 5 implemented in Fig. 6. In the interactive projection system 50A of Fig. 6, the projection focal length of the projection unit 52 is not the same as the sensing focal length of the webcam 530. Therefore, before the step of sensing the brightness and color or shape of the image plane and the light spots PI, P2 displayed on the screen 510, the system operation method must first identify the size of the projection surface to match different projection distances. . In step S800, the projection unit 520 first displays a correction screen. Next, in step S802, the webcam 530 senses the correction plane projected onto the screen 510. In step S804, if the network camera 53 does not sense the correction surface, the notebook computer 542 adjusts the network camera 53 13 201142466

The shooting angle of HD-2010-0005-TW 34022twf.doc/I is to cover the corrected face to be sensed, as in step S8〇6. At this time, the method flow of the system operation of the present embodiment returns to step S802 to re-sensing the correction plane. In step S804, if the corrected face is sensed, the network camera 530 transmits the sensed facet to the notebook 542. Thereafter, in step S808, the notebook computer 542 adjusts the size of the face by the image decoding unit 544, and automatically adjusts and scalars its parameters to map the displayed image to the screen 510. . Next, in step S810, the projection unit 52 〇 desires the notebook computer 542. The displayed image is projected on the screen 51, and the user projects the spot ρ Ρ 2 on the screen 51 by the light emitter LPb LP2. In the present embodiment, the remaining step flow is the same as or similar to the step flow of the step of Fig. 7. The description of the embodiment of the fourth embodiment can be adequately taught, suggested, and implemented, and therefore will not be described again. A plurality of exemplary embodiments of the book, for example, a system for explaining a shadow of a projection screen, a drawing, a dragging object, and a scrolling window scroll, etc., which are projected onto the screen of the screen, Included in the window 91 of the operating system and the window _ include - window reel 912, and the built-in = diameter or stored in the desktop _ case.丨 Ruo 疋 疋 疋 疋 疋 : : : : : : : 疋 疋 疋 疋 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , % code early 144 analysis is in the object 92〇, 201142466

-2010-0005-TW 34022twf.doc/I After a specific period, the control unit 14G executes the counterpart _ For example, if the object 920 is the slot file 1 stored in the desktop, the object 920 is selected, the control unit 140: Open === Similarly, if the object 920 is to create a unit MO gP point selection object 92G, the control library (four) two? Linked location 'Open file or executable. In other words, the control unit performs a point-and-click selection of the corresponding spot based on at least two of the spots being shot at the position of the image plane. In the case of the effective f, if the image sensing unit 130 determines that the light spot P1 or 1 > 2 is f 2 when moving, the object 92 is clicked and is on the screen 11. : Move track: t early: According to the spot P1 or P2 in the image _, eg, if you make = ή spot P1 or P2 - drag $ operation. For example, the control unit 14G controls the object 920 according to the light side to =, = 920'. In other words, the control unit corresponds to the operation of the light spot: In the movement of the image frame, the effective spot is executed. If the image sensing unit 130 determines that the spot P1 or P2 is the control, the control unit- or P2 is projected on the window reel 912 and moves m, Bo "14〇 According to the spot P1 or P2, the scrolling operation is performed at the point of movement of the reel 6 ρ1 Λ ρί. For example, if the control unit \ 1 clicks on the window reel by 912 and moves the spot Ρ 1 down, the ho will scroll down the window reel 912 to change its display 15 201142466

HD-2010.0005.tw 34022twf.doc/I Content. In other words, the control unit performs a scrolling operation corresponding to the spot based on at least one of the spots in the moving direction of the reel. In the present embodiment, various system operations are exemplified by the interactive projection system 100 of Fig. 1, but the present invention is not limited thereto. In another embodiment, various system operations can also be implemented in the interactive projection system 5 of FIG. In addition, the parts of the present embodiment that are the same as or similar to those of the embodiment of Figs. 1 to 8 can be sufficiently taught, suggested, and implemented by the description of the embodiment of Figs. 1 to 8, and therefore will not be described again. In summary, in the embodiment of the present invention, the interactive projection system can simultaneously provide multiple users to perform system operations on the screen of the projection system by recognizing multiple spots on the screen of the projection system. Subverting the traditional input method using the keyboard can greatly enhance the convenience of using the projection system. Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 illustrates an interactive projection system in accordance with an embodiment of the present invention. 2 is a schematic illustration of the light emitter of FIG. 1 projected onto different spots on the screen. 3 illustrates an interactive projection system in accordance with another embodiment of the present invention. 4 is a block diagram of the interactive projection apparatus of FIG. 3.

201142466 tuj-zv 10-0005-T W 34022twf.doc/I FIG. 5 illustrates an interactive projection system according to another embodiment of the present invention. 6 is a block diagram of the interactive projection system of FIG. 5. FIG. 8 is a flow chart showing a method for operating a system according to an embodiment of the present invention. FIG. 8 is a flow chart showing a method for operating a system according to another embodiment of the present invention. FIG. 9 is a view showing an image projected on a screen according to an embodiment of the present invention. . [Main Component Symbol Description] 100, 300, 500: Interactive Projection System 110, 310, 510: Screens 120, 320, 520: Projection Units 130, 330: Image Sensing Units 140, 340, 540: Control Unit 142: Host System 144, 344, 544: image decoding unit 342: processing unit 346: input interface 348: network connection device 350: interactive projection farm 530: image sensing unit, network camera 542: notebook computer 900: image file Face 912: Window Reel 912': Position

Ul, U2: User 17 201142466

HD-2010-0005-TW 34022twf.doc/I LP1, LP2: Optical Transmitter PI, P2: Spot SI: Mobile Excavation D1. Moving Direction System Operation Method Steps: S700, S702, S704, S706, S708, S710 , S800, S802' S804, S806, S808, S810, S812, S814, S816, S818, S820

Claims (1)

201142466 HD-2010-0005-TW 34022twf.doc/I VII. Application for patent garden: 1' kind of interactive projection system' is suitable for identifying at least two light spots generated by at least two light emitters on one screen. The interactive projection system includes: a projection unit for projecting an image plane to the screen; an image sensing unit for sensing the light spots on the screen, wherein each of the light spots has a a parameter, and the parameters of the light spots are different from each other; and a control unit respectively identifying and distinguishing the light spots according to the parameters of the light spots, and the control unit is configured according to at least one of the light spots Perform the corresponding system operation. For example, the interactive projection system described in the application of the third item includes an L-second light spot including a first wire and a second light spot, and the color of the light spot and the color of the second light spot are controlled. Qing and & knife the younger one light spot and the second light spot. For example, the interaction according to item i of the patent application scope = two light spots including - the first light spot and the second light spot, and the control ^ = according to the younger brother - the second wire and the difference between the crane and the fine And the H-shaped "Do not use the interactive shadow system q of the first item in the middle of the circle, and the brightness threshold value" to allow the control (9) to print the projection unit in the interaction type described in item 1. The county Xinneng miscellaneous single ^^ 201142466 HD-2010-0005-TW 34022twf.doc/I is the same in quality. 6 · A system control method suitable for an interactive projection system, wherein the interactive projection system is used Identifying at least two light spots respectively generated by at least two light emitters on a screen, the system control method comprising: projecting an image plane to the screen; sensing the light spots on the screen, wherein each of the light The point has a parameter, and the parameters of the light spots are different from each other; ^ respectively identifying and distinguishing the light spots according to the parameters of the light spots; and performing corresponding system operations according to at least one of the light spots 7. If the system control method described in claim 6 is applied, The midpoint includes a "first" light spot and a second light spot, and in the step of separately identifying the light spots, respectively, identifying and distinguishing the color according to the color of the first light spot and the color of the younger and the "point" The first light spot and the second light are as described in the item 6, wherein the first light spot comprises a first one and the second light point of the H , Identifying the first and the "according to the shape of the first-light spot and the formation" - the light spot and the second light 7. If the sixth item of the patent scope is to sense the light spots on the screen The ^ method, which identifies and distinguishes the spots. 〇···················································································· I 投射 该 该 该 投射 投射 投射 投射 投射 投射 投射 投射 投射 投射 投射 投射 投射 投射 投射 投射 投射 投射 投射 投射 投射 投射 投射 投射 投射 投射 投射 投射Spoon Rainbow I1·· ^Please refer to the system control method described in the sixth item of patent lang, bearing the sense of ::! The image is in the face, which is executed in the corresponding: Execution, the execution of the light spot is a drag on ^ The movement like the facet includes the system control method described in ί二:=范3二项, and the line #作_step in the middle ^, according to at least the basin of the light spots. In the direction of the movement of the secret axis, the execution corresponds to the light _-rolling m. 21