TW201400970A - Wireless interactive projection method and system - Google Patents

Abstract

A wireless interactive projection system is provided. The system includes a plurality of control units, a wireless interactive projection unit, a point unit and a wireless projection determining unit. The wireless interactive projection unit is coupled to the plurality of control units wirelessly and projects the display images of the control units to an image display area. The image display area consists of a plurality split screens, wherein the plurality split screens is corresponding to and displays the display images of the plurality of the control unit respectively. The point unit controls a corresponding cursor to point to a projection position coordinates and issues an operation instruction. Wireless projection determining unit is configured to the wireless interactive projection unit. After receiving the projection position coordinates and the operation instruction, the wireless interactive projection unit sends the projection position coordinates and the operation instruction to the wireless projection determining unit. The wireless projection determining unit calculates the actual position coordinates of the corresponding control unit by the projection position coordinates and sends the actual position coordinates to the corresponding control unit.

Description

Wireless interactive projection method and system

The present invention relates to an interactive projection method and system, and more particularly to a wireless interactive projection method and system.

The projection device and wireless technology can form a wireless projection device to achieve better picture sharing functions of digital devices (for example, computers, mobile phones, etc.). Users do not need to use any cable (Video Graphics Array (VGA) transmission line, High-Definition Multimedia Interface (HDMI) transmission line, etc.) when sharing pictures, as long as they are wireless with wireless projection technology. Projection software, and within the allowable range of wireless transmission, can be used for wireless projection of the screen sharing function, which can increase the flexibility and convenience of user screen sharing.

In the wireless projection software design, there is a function of providing multi-person connection and multiple user pictures to share at the same time. For example, Acer's projector S5201M provides wireless projection function. As long as the user connected to the projector can select the sharing mode of the user screen, for example, setting the projector screen to a full screen projection screen or dividing a specific area in the projection screen. FIG. 1 is a schematic diagram of the Acer wireless projector function page. As shown in FIG. 1, the user can select to set the display screen to the full screen projection screen 101 or to divide the projection screen 102.

In the function of splitting the projected picture, up to four users can simultaneously share the picture of the digital device to the wireless projector. Figure 2 is a schematic diagram showing a four-segment projection screen projected by an Acer wireless projector. Such as the first As shown in Fig. 2, the function of dividing the projected picture can achieve mutual discussion and sharing, and can improve the inconvenience of users in exchanging transmission lines to share pictures in the process of group discussion.

In addition, wireless projectors can also be used in the field of digital learning. In order to improve students' learning and increase their motivation, teachers can use the "Team Teaching" teaching method, for example, in group discussion. At the same time, the answers of each group are presented on the podium at the same time, and the teacher answers and corrects the answers of each group. Based on this teaching method, teachers can use interactive projectors and wireless projector functions, and their presentation and teaching methods are shown in Figure 3. Figure 3 is a schematic diagram showing the projection screen of the collaborative learning wireless interactive projector. In the upper left corner of the figure, the screen 201 is the teacher's question screen, and the remaining screens 202 to 204 are the student's answer screen.

In the way of collaborative learning, it is to improve learning by comparing and modifying each other. However, under the framework of this teaching method, although the wireless interactive projector can achieve the function of sharing multiple pictures at the same time, the teacher can also see the answering methods of each question at the same time. However, between the student and the teacher's digital device, the mechanism of cross-device operation cannot be achieved. As shown in Fig. 3, only the answer of the student of the screen 202 is correct, and the answers of the other two students in the pictures 203 and 204 are Incorrect, the teacher must correct the answers in screens 203 and 204 immediately, but the teacher can only control the movement of the mouse and the operation of the keyboard in the display screen 201 of his digital device, and cannot directly cross, control and operate the digits of the student. The device is used to help correct the answers in the student's display screen, so that students can improve their learning.

Therefore, if you can use the interactive projector and wireless projection work By enabling the system to achieve cross-platform operation between many simultaneous projection devices, the convenience of sharing and sharing can be improved. Further use of multi-device sharing and cross-group discussions to enhance the intimacy of interactive projectors, but also allows users to make more choices and applications.

The invention provides a wireless interactive projection method and system.

The present invention provides a wireless interactive projection system, comprising a plurality of control units; a wireless interactive projection unit, wirelessly coupled to the plurality of control units, projecting display screens of the plurality of control units in an image display area And the image display area is composed of a plurality of divided windows, wherein the plurality of divided windows respectively correspond to and display display screens of the plurality of control units; and a pointing unit controls a corresponding component to point to a projection in the image display area Positioning coordinates and executing an operation command; and a wireless projection determination unit configured in the wireless interactive projection unit; wherein the wireless interactive projection unit receives the projection position coordinate and the operation instruction, the wireless projection determination unit A corresponding control unit is found by the projection position coordinate, and the projection position coordinate is converted into an actual position coordinate of the corresponding control unit, and the actual position coordinate and the operation command are transmitted to the corresponding control unit.

The present invention provides a wireless interactive projection system, comprising a plurality of control units; a wireless interactive projection unit, wirelessly coupled to the plurality of control units, projecting display screens of the plurality of control units in an image display area And the image display area is composed of a plurality of divided windows, wherein the plurality of divided windows respectively correspond to and display the plurality of control units a display unit; a pointing unit, controlling a corresponding component to point to a projection position coordinate in the image display area and executing an operation instruction; and a plurality of wireless projection determination units respectively disposed in the plurality of control units; wherein the wireless After receiving the projection position coordinate and the operation instruction, the interactive projection unit transmits the projection position coordinate and the operation instruction to the plurality of control units; the wireless projection determination unit converts the projection position coordinate to an actual position coordinate; The control unit corresponding to one of the actual position coordinates controls the corresponding component to execute the operation command at the actual position coordinate.

The present invention provides an interactive projection method for a wireless interactive projection system including a plurality of control units, a wireless interactive projection unit, a pointing unit, and a wireless projection determining unit. The wireless projection unit is disposed in the wireless interactive projection unit. The method includes: projecting, by the wireless interactive projection unit, the display screen of the plurality of control units in an image display area, and the image display area The system is composed of a plurality of divided windows, wherein the plurality of divided windows respectively correspond to and display display screens of the plurality of control units; Controlling, by the pointing unit, a corresponding component to point to a projection position coordinate in the image display area and executing an operation instruction; receiving, by the wireless interactive projection unit, the projection position coordinate and the operation instruction; and determining, by the wireless projection unit Using the projection position coordinate to find a corresponding control unit, and converting the projection position coordinate to an actual position coordinate of the corresponding control unit; and transmitting the actual position coordinate to the corresponding control unit.

The present invention provides an interactive projection method for a wireless interactive projection system, the wireless interactive projection system including a plurality of control units, a wireless interactive projection unit, and a pointing unit; The plurality of wireless projection determination units are respectively disposed in the plurality of control units; the method includes: projecting, by the wireless interactive projection unit, the display screens of the plurality of control units in an image display area, wherein the image display area is a plurality of divided windows, wherein the plurality of divided windows respectively correspond to and display display screens of the plurality of control units; wherein the pointing unit controls a corresponding component to point to a projection position coordinate in the image display area and execute an operation instruction And receiving, by the wireless interactive projection unit, the projection position coordinate and the operation instruction, and the projection position coordinate and the operation instruction, the plurality of control units; and the projection position coordinates are converted by the wireless projection determination unit The actual position coordinate; and the control unit corresponding to one of the actual position coordinates controls the corresponding component to execute the operation command at the actual position coordinate.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

In order to make the objects, features, and advantages of the present invention more comprehensible, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in Figures 4 through 13B. The present specification provides various embodiments to illustrate the technical features of various embodiments of the present invention. The arrangement of the various elements in the embodiments is for illustrative purposes and is not intended to limit the invention. The overlapping portions of the drawings in the embodiments are for the purpose of simplifying the description and are not intended to be related to the different embodiments.

A. System architecture

Figure 4 is a block diagram showing a wireless interactive projection system 300 in accordance with an embodiment of the present invention. The system 300 includes a plurality of control units (control unit 310, control unit 320, control unit 330, and control unit 340), a wireless interactive projection unit 350, a wireless projection determination unit (not shown), and a pointing unit 360. As shown, the wireless interactive projection unit 350 is wirelessly coupled to the control units 310-340 and projects the display screens of the control units 310-340 into an image display area 380. The image display area 380 is composed of a plurality of divided windows 381 to 384, and the divided windows 381 to 384 respectively correspond to and display the display screens of the control units 310 to 340.

A user can control a corresponding component in the image display area 380 to point to a projection position coordinate 390 by a pointing unit 360 and execute an operation command to control the control units 310-340. The above corresponding components are exemplified by, but not limited to, a mouse cursor or a graphical user interface (GUI). After receiving the operation instruction, the wireless interactive projection unit 350 transmits the projection position coordinate 390 to the wireless projection determination unit. The wireless projection determination unit determines the corresponding control unit by the projection position coordinate 390 in the image display area 380, and converts the projection position coordinate 390 to an actual position coordinate in the corresponding control unit display screen for controlling the corresponding The corresponding component in the control unit. In another embodiment, the pointing unit can be a laser light emitting device, an infrared sensing device, an interactive whiteboard or a USB wireless mouse.

It should be noted that the wireless projection determining unit can be configured in the wireless interactive projection unit 350 or configured in all the control units respectively. 310~340. Therefore, in the following description, it will be divided into two parts to explain the operation mode of the wireless projection judging unit in different configurations.

[Wireless projection judgment unit is configured in the operation mode of the wireless interactive projection unit]

This operation mode uses the wireless projection judgment unit to realize the operation across the control unit, and does not need to add additional hardware support, and only needs to change the wireless projection judgment unit to achieve. Figure 5 is a schematic diagram showing the configuration of a system environment according to the first embodiment of the present invention, and please refer to Figure 4. In this first embodiment, the wireless projection determination unit is disposed in the wireless interactive projection unit 350. As shown in FIG. 5, all of the control units 310-340 transmit their respective display screens to the wireless interactive projection unit 350 (dashed arrow). The wireless projection determination unit disposed in the wireless interactive projection unit 350 locates a corresponding control unit 320 by pointing to a projection position coordinate 390 in the image display area 380 by the corresponding component controlled by the pointing unit 360, and converts the corresponding control unit 320. The projection position coordinate is the actual position coordinate of one of the corresponding control units. The actual position coordinates and the operation command are transmitted to the corresponding control unit 320 (solid arrow).

In this first embodiment, the position coordinates and operation instructions are designed in the wireless projection determination unit, and the control device application interface (Application Programming Interface) provided in the control unit operating system (OS) system is used. , API) to control the corresponding components in the control unit.

Specific examples, but not limited to, in Windows, there is an application interface that provides a mouse_event that can control mouse operations, as shown in Table 1 below:

According to the mouse control application interface provided by the Windows system, a mouse position coordinate operation instruction set structure dedicated to the wireless projection determination unit can be established to simplify the transfer of the mouse position coordinate operation instruction between the wireless projection determination unit and the control unit. The complexity of the instruction field is specifically but not limited to the following list 2:

Referring to the mouse position coordinate operation instruction set structure defined in Table 2, the coordinate position coordinate operation instruction dedicated to the wireless projection determination unit can be simplified but not limited to Command=(Event, Key, Pos_X, Pos_Y). For example, to move the mouse cursor position to the coordinates (683, 384) and press the left button, the wireless projection judgment unit will transmit the mouse coordinate operation signal command to Command=(0,0,683,384), Command=(1,1,0, 0) and Command=(2,1,0,0) to the control unit. The control unit will control the mouse according to the received command and refer to the table 2 coordinate position coordinate operation instruction set to convert the application interface used under the operating system.

Figure 6 is a schematic diagram showing the wireless projection unit in the wireless interactive projection unit processing the transfer mouse position coordinates and the operation command and the corresponding control unit receiving and converting the mouse position coordinates and the operation command. As shown in Figure 6. The user controls the action of a single-click mouse on the position coordinates (768, 192) of the wireless interactive projection unit 350 by the pointing unit 360. Please note that the action of the above single mouse is to press the mouse and Release the mouse to form a single click. The wireless projection determining unit determines that the position coordinate (768, 192) is located in the upper right corner dividing window 382 of the interactive projection unit 350, corresponding to the display screen of the control unit 320, and then positions the position in the image display area 380 according to the resolution of the control unit 320 ( 768, 192) is converted to the mouse cursor coordinate at control unit 320 (683, 384). Next, the wireless projection determination unit in the wireless interactive projection unit 350 (Tx) sets the mouse coordinate operation command Command=(0,0,683,384), Command=(1,1,0,0), and Command=(2,1,0). , 0) is transmitted to the control unit 320. After receiving the mouse position coordinate operation command, the control unit 320 (Rx) converts the mouse position coordinate operation command into an application interface used under the operating system to control the mouse.

In the implementation manner described above, the position coordinates and the operation command estimation of the pointing unit are performed through the wireless projection determining unit disposed in the wireless interactive projection unit. When more control units are connected to the wireless interactive projection unit, the complexity of the judgment and calculation of the position coordinates and the operation instructions will be greatly increased. In order to prevent the wireless interactive projection unit from affecting the operation of the normal system due to the processing of the operation signal, in another embodiment, the wireless projection determination unit may be disposed in the wireless interactive projection unit 350 and all the control units 310-340, and the pointing unit The 360 operation command and position coordinates 390 are calculated by the wireless projection determination unit in the control units 310-340. Therefore, the burden of the wireless interactive projection unit can be alleviated by the high system performance of the control unit. Detailed details thereof will be described in the second embodiment below.

[Wireless projection judgment unit is configured in the wireless interactive projection unit and control unit operation mode]

The biggest difference between this part is that the wireless interactive projection unit directly transmits the projection position coordinates and operation commands of the wireless projection unit to all the controls directly after receiving the projection position coordinates and operation commands transmitted by the pointing unit through the interaction mechanism. unit. After receiving the projection position coordinates and the operation command, the control unit operates the corresponding action and instruction by the projection position coordinate and the operation instruction.

Figure 7 is a schematic diagram showing the system environment configuration according to the second embodiment of the present invention, and please refer to Figure 4. In this second embodiment, the plurality of wireless projection determination units are respectively disposed in all of the control units 310-340. As shown in FIG. 7, all control units 310-340 will transmit respective display screens to the wireless interactive projection unit 350 (dashed arrow 501), and the wireless interactive projection unit 350 will control a corresponding component of the pointing unit 360. The projection position coordinates pointed to in the image display area 380 and the operation commands executed by the pointing unit 360 are transmitted to all of the control units 310-340 (solid arrow 402).

In this second embodiment, the signals specifically and without limitation of the wireless interactive projection unit 350 end (Tx) projection position coordinates include:

a. Wireless projection image display area segmentation method

b. Number of the control unit

c. Resolution of the image display area

d. The position coordinates of the control unit.

The signal a. The segmentation mode of the wireless projection image display area will be designed according to the segmentation method of the interactive mechanism software design of the wireless interactive projection unit 350, including four divisions (A4), horizontal dichotomy (H2), and vertical dichotomy ( V2) and other division methods. Signal b. The number of the control unit is used to inform wireless interaction The projection unit 350 controls the units 310 to 340 to display the position number of the screen discharge, and the division manner and the control unit number are as shown in FIG. The remaining signals c. The resolution of the image display area and the signal d. The position coordinates of the control unit are necessary signals under the interactive projection mechanism. It will be apparent to those skilled in the art that no further explanation is required herein.

In this second embodiment, based on the design concept of the messages a, b, c, d, the corresponding command list is as shown in Table 3 below:

Figure 9 is a schematic diagram showing the wireless coordinate projection unit processing position coordinate operation command in the control unit end. As shown in FIG. 9, if the operation command is transmitted to the control unit 320 corresponding to the upper right split screen 382 in the image display area 380, the command is as follows: command (A4, 2 , 1024, 768, 768, 192).

Please note that in this second embodiment, the wireless interactive projection unit does not know the actual control unit when transmitting the operation signal, and only transmits its interactive operation instruction to all the wireless interactive projections. The unit's control units 310-340 execute the operation command by the wireless projection determination unit in the control units 310-340, and the operation instructions transmitted are as shown in FIG. In this second embodiment, after receiving the operation command, each of the control units 310-340 converts the division mode and the coordinates of the projection position, and derives the actual position coordinates actually to be controlled in the control unit display screen. For example, but not limited to, if the operation instruction transmitted by the wireless interactive projection unit 350 is command (A4, 2 , 1024, 768, 768, 192), all the control units 310-340 receive the operation instruction, and then calculate the actual operation command. It is necessary to control the actual position coordinates in the control unit display screen. Finally, only the control unit 320 corresponding to the control unit number 2 in the split mode A4 controls its corresponding component (for example, a mouse cursor). The remaining control units 310, 330 and 340 corresponding to control unit numbers 1, 3 and 4 will not further perform the actions of the corresponding elements.

[Using Wireless USB Device]

In addition, under the architecture of the first embodiment, the operating mechanism of the cross-control unit in the wireless interactive projection system can be implemented using the hardware architecture of the wireless USB. The current universal USB wireless mouse uses the RF 2.4GHz through pairing concept to place the RF transmitter (Tx) on the USB wireless mouse device, while the RF receiver (Rx) USB receiver is wirelessly interactive. In the projection unit. During the RF transmission and reception of the operation signal, the RF transmitter (Tx) adds the identified device code to the transmission operation signal, so that the RF receiver (Rx) can recognize and receive the special RF signal. Finally, the wireless projection determination unit in the wireless interactive projection unit decodes the RF signal into a specific USB HID device control signal for controlling the corresponding control unit.

Based on this hardware architecture concept using a wireless USB device, a wireless USB-specific transmitter (Tx) can be used in the wireless interactive projection unit, and four wireless USB-dedicated receivers (Rx) are used in the four control units. on. Therefore, four sets of dedicated pairing signals are required to be judged by wireless projection. The auxiliary of the unit knows the control unit to be controlled, and then sends the corresponding RF signal to the corresponding receiver. The wireless USB device needs to include a transmitter and four receivers to form a device group, which must be used together to achieve an inter-device control mechanism.

Figure 10 is a block diagram showing the architecture of a wireless interactive projection system using a wireless USB device in accordance with a third embodiment of the present invention. As shown in Figure 10. The manner in which the transmitter (Tx) is paired with the RF device of the receiver (Rx) can be assisted and implemented by the wireless projection determination unit. When the RF receiver (Rx) is connected to the control unit via the USB interface, since the receiver (Rx) is a wireless USB device, the device code of the wireless USB can be known. The device transmits the wireless USB device information to the receiver (Rx) together with the wireless projection determination unit and the projection screen. In this way, the wireless projection determination unit can determine which specific RF signal should be used corresponding to which position coordinate.

In another embodiment, the USB transmission mode can be achieved by TI's pointBlank technology, infrared sensing or hardware capacitance is sensing technology.

B. Process and method description

11A is a flow chart showing an operation method of the wireless projection determination unit disposed in the wireless interactive projection unit according to the first embodiment of the present invention, with reference to FIGS. 4-6. First, in step S401, the wireless interactive projection unit projects the display screen of the complex control unit in an image display area, wherein the image display area is composed of a plurality of divided windows, and the plurality of divided windows respectively correspond to and display the complex control unit. Display screen. In step S402, a user controls the image display area using a pointing unit. A corresponding component points to a projection position coordinate and performs an operational command. In step S403, the wireless interactive projection unit receives the operation instruction returned by the interaction mechanism and the projection position coordinate. In step S404, the corresponding wireless control unit is located in the wireless interactive projection unit to find and determine the corresponding control unit. Next, in step S405, the wireless projection determination unit converts one of the actual position coordinates of the corresponding control unit by the projection position coordinate. In step S406, the wireless projection determination unit compiles the projection position coordinates and the operation command into a simple operation command. Finally, in step S407, the wireless projection determination unit transmits a simple operation command to the corresponding control unit.

FIG. 11B is a flow chart showing the operation method of the corresponding control unit according to the first embodiment of the present invention, with reference to FIGS. 4-6. First, in step S501, the corresponding control unit receives a simple operation instruction transmitted by the wireless projection determination unit by the interaction mechanism. In step S502, the corresponding control unit interprets the simple operation instruction transmitted by the wireless projection determination unit. Next, in step S503, the corresponding control unit generates an application interface instruction for controlling the corresponding component in the operating system. Finally, in step S504, the corresponding component in the control unit corresponding to the control executes an operation instruction at the actual position coordinate.

FIG. 12A is a flow chart showing an operation method of the wireless projection determination unit configured in the wireless interactive projection unit according to the second embodiment of the present invention, and with reference to FIGS. 4, 7-9. First, in step S601, the wireless interactive projection unit projects the display screen of the complex control unit in an image display area, wherein the image display area is composed of a plurality of divided windows, and the plurality of divided windows respectively correspond to and display all the control units. Display screen. in In step S602, a user controls a corresponding component to point to a projection position coordinate in the image display area by using a pointing unit and executes an operation instruction. In step S603, the wireless interactive projection unit receives an operation instruction returned by the pointing mechanism by the interaction mechanism. Next, in step S604, the wireless interactive projection unit transmits the projection position coordinates and the operation command to all the control units.

Figure 12B is a flow chart showing the operation method of the corresponding control unit according to the second embodiment of the present invention, with reference to Figures 4, 7-9. First, in step S701, all control units receive projection position coordinates and operation instructions transmitted by the wireless interactive projection unit by the interaction mechanism. Next, in step S702, the wireless projection determination unit in all the control units derives the actual position coordinates actually to be controlled in the control unit display screen, and executes the operation signal command.

Fig. 13A is a flow chart showing the operation method of the wireless USB transmitter (Tx) installed in the wireless interactive projection unit according to the third embodiment of the present invention, with reference to Fig. 10. First, in step S801, the wireless interactive projection unit projects the display screen of the complex control unit in an image display area, wherein the image display area is composed of a plurality of divided windows, and the plurality of divided windows respectively correspond to and display the complex control unit. Display screen. In step S802, a user controls a corresponding component to point to a projection position coordinate in the image display area using a wireless USB pointing unit and executes an operation command. In step S803, the wireless USB transmitter (Tx) installed in the wireless interactive projection unit receives the projection position coordinates and the operation command transmitted by the wireless USB pointing device through the interaction mechanism. Next, in step S804, the wireless projection determination unit in the wireless interactive projection unit discriminates the corresponding control The unit is added, and the identified device code is added to the operation signal to become a specific RF signal. Finally, in step S805, the wireless USB transmitter (Tx) transmits the specific RF signal to the corresponding control unit.

Fig. 13B is a flow chart showing the operation method of the corresponding control unit for mounting the wireless USB receiver (Rx) according to the third embodiment of the present invention, with reference to Fig. 10. First, in step S901, the corresponding wireless USB receiver (Rx) of the control unit receives the specific RF signal transmitted by the wireless USB transmitter (Tx). In step S902, the corresponding control unit interprets the specific RF signal as an actual position coordinate and an operation command. Finally, in step S903, the corresponding component in the corresponding control unit is controlled to execute an operation command at an actual position coordinate.

Therefore, with the wireless interactive projection method and system of the present invention, cross-platform operation between many simultaneous projection devices can be solved under the function of using an interactive projector and wireless projection. It allows users to more easily and efficiently utilize interactive projection and use it in different applications.

While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.

101‧‧‧Full screen projection screen

102‧‧‧Split projection screen

201~204‧‧‧Display screen

300‧‧‧Wireless Interactive Projection System

310~340‧‧‧Control unit

350‧‧‧Wireless interactive projection unit

360‧‧‧ pointing unit

380‧‧‧Image display area

381~384‧‧‧Split window

390‧‧‧projection position coordinates

S401~S407

S501~S504

S601~S605

S701~S702

S801~S805

S901~S903

Figure 1 is a schematic diagram of the Acer Wireless Projector function page.

Figure 2 is a schematic diagram showing a four-segment projection screen projected by an Acer wireless projector.

Figure 3 is a schematic diagram showing the projection screen of the collaborative learning wireless interactive projector.

Figure 4 is a block diagram showing a wireless interactive projection system in accordance with an embodiment of the present invention.

Figure 5 is a diagram showing the configuration of a system environment according to the first embodiment of the present invention.

Figure 6 is a schematic diagram showing the wireless projection unit in the wireless interactive projection unit processing the transfer mouse position coordinates and the operation command and the corresponding control unit receiving and converting the mouse position coordinates and the operation command.

Figure 7 is a diagram showing a system environment configuration according to a second embodiment of the present invention.

Figure 8 shows the division of the wireless projection image display area and the control unit number.

Figure 9 is a schematic diagram showing the operation of the coordinate operation signal by the wireless interactive projection unit in the control unit end.

Figure 10 is a block diagram showing the architecture of a wireless interactive projection system using a wireless USB device in accordance with a third embodiment of the present invention.

11A is a flow chart showing an operation method of a wireless projection determination unit configured in a wireless interactive projection unit according to a first embodiment of the present invention.

Figure 11B is a flow chart showing the operation method of the corresponding control unit according to the first embodiment of the present invention.

12A is a flow chart showing an operation method of a wireless projection determination unit configured in a wireless interactive projection unit according to a second embodiment of the present invention.

Fig. 12B is a flow chart showing the operation method of the corresponding control unit according to the first embodiment of the present invention.

Figure 13A is a flow chart showing the operation method of the wireless USB transmitter (Tx) installed in the wireless interactive projection unit according to the third embodiment of the present invention.

Fig. 13B is a flow chart showing the operation method of the corresponding control unit for installing the wireless USB receiver (Rx) according to the third embodiment of the present invention.

300‧‧‧Wireless Interactive Projection System

310~340‧‧‧Control unit

350‧‧‧Wireless interactive projection unit

360‧‧‧ pointing unit

380‧‧‧Image display area

381~384‧‧‧Split window

390‧‧‧ position

Claims (10)

A wireless interactive projection system includes a plurality of control units; a wireless interactive projection unit wirelessly coupled to the plurality of control units, projecting display screens of the plurality of control units in an image display area, and the image display area The plurality of divided windows respectively correspond to and display the display screens of the plurality of control units; a pointing unit controls a corresponding component to point to a projection position coordinate in the image display area and perform an operation And the wireless projection unit is configured in the wireless interactive projection unit; wherein the wireless projection unit receives the projection position coordinate and the operation instruction, the wireless projection determination unit uses the projection position coordinate A corresponding control unit is found, and the projection position coordinate is converted into an actual position coordinate of the corresponding control unit, and the actual position coordinate and the operation instruction are transmitted to the corresponding control unit. The wireless interactive projection system of claim 1, wherein the corresponding component of the corresponding control unit executes the operation instruction at the actual position coordinate. The wireless interactive projection system of claim 1, wherein the pointing unit is a laser light emitting device, an infrared sensing device, an interactive whiteboard or a USB wireless mouse. A wireless interactive projection system, including a plurality of control units; a wireless interactive projection unit, wirelessly coupled to the plurality of control units, projecting display screens of the plurality of control units in an image display area, wherein the image display area is composed of a plurality of divided windows The plurality of divided windows respectively correspond to and display display screens of the plurality of control units; a pointing unit controls a corresponding component to point to a projection position coordinate in the image display area and executes an operation instruction; and a plurality of wireless projection determination units And the plurality of control units are respectively disposed in the plurality of control units; wherein the wireless interactive projection unit receives the projection position coordinates and the operation instruction, and transmits the projection position coordinates and the operation instruction to the plurality of control units; The wireless projection judging unit converts the projection position coordinate into an actual position coordinate; the control unit corresponding to one of the actual position coordinates controls the corresponding component to execute the operation instruction at the actual position coordinate. The wireless interactive projection system of claim 1, wherein the pointing unit is a USB wireless mouse. An interactive projection method for a wireless interactive projection system, the wireless interactive projection system comprising a plurality of control units, a wireless interactive projection unit, a pointing unit and a wireless projection determining unit, wherein the wireless projection determining The unit is configured in the wireless interactive projection unit; the method includes: projecting, by the wireless interactive projection unit, a display screen of the plurality of control units in an image display area, wherein the image display area is determined by a plurality of points Forming a cut window, wherein the plurality of split windows respectively correspond to and display display screens of the plurality of control units; and the pointing unit controls a corresponding component to point to a projection position coordinate in the image display area and execute an operation instruction; Receiving, by the wireless interactive projection unit, the projection position coordinate and the operation instruction; the wireless projection determination unit uses the projection position coordinate to find a corresponding control unit, and converts the projection position coordinate to the corresponding control unit An actual position coordinate; and transmitting the actual position coordinate to the corresponding control unit. The method of interactive projection according to claim 6, further comprising transmitting the operation to the corresponding control unit, and controlling a corresponding component of the corresponding control unit to execute the operation instruction at the actual position coordinate. The method of interactive projection according to claim 6, wherein the pointing unit is a laser light emitting device, an infrared sensing device, an interactive whiteboard or a USB wireless mouse. An interactive projection method for a wireless interactive projection system, the wireless interactive projection system comprising a plurality of control units, a wireless interactive projection unit and a pointing unit; wherein the plurality of wireless projection determining units are respectively configured In the plurality of control units, the method includes: projecting, by the wireless interactive projection unit, a display screen of the plurality of control units in an image display area, wherein the image display area is composed of a plurality of divided windows, wherein the plural The split windows respectively correspond to and display display screens of the plurality of control units; Controlling, by the pointing unit, a corresponding component to point to a projection position coordinate in the image display area and executing an operation instruction; and receiving the projection position coordinate and the operation instruction by the wireless interactive projection unit, and positioning the projection position And the operation commanding the plurality of control units; converting, by the wireless projection determination unit, the projection position coordinate to an actual position coordinate; and controlling, by the control unit corresponding to one of the actual position coordinates, the corresponding component in the actual The position coordinates perform this operation instruction. The method of interactive projection according to claim 9, wherein the pointing unit is a USB wireless mouse.