TWI506482B - Interactive projection system and method thereof - Google Patents

Description

Interactive projection system and interactive projection method thereof

The present invention relates to an interactive projection system, and more particularly to an interactive projection system that defines the functionality of an input device through color codes on an input device.

In today's information age, human dependence on electronic products is increasing. Electronic products such as notebook computers, mobile phones, digital walkmans, and optical projectors have become indispensable tools for modern people's lives and work. Each of the above electronic products has an input interface for inputting instructions required by the user so that the internal system of the electronic product automatically executes the command.

Nowadays, with the development of technology, host devices such as desktop computers and notebook computers have become an indispensable part of schooling or work. In addition, due to the advent of the presentation software, many people pre-edit the report data and store it in the host device to present the report data to the screen image of the host device at the time of the report. In order to enable the report data to be presented to a large number of listeners in the audience, the projection device can be electrically connected to the projection device of the host device, so that the projection device can project an image on the screen to generate a projection image corresponding to the screen image. In this way, in addition to enabling the reporter to effectively and vividly present the report data to the audience, the projection device is more convenient for the audience to ask questions and discuss the report data.

In the prior art, although the touchpad has gradually evolved and developed toward multi-touch, the multi-point timing processing has no number difference, so the weight of each touch point is the same. Therefore, in order to achieve different numbers of light pens, the prior art usually needs to be in the light. The pen emits specific messages, such as radio frequency, infrared, or other electromagnetic waves that are actively emitted. However, this leads to higher costs and it is easier to make battery life worse under long-term power consumption.

Embodiments of the present invention provide an interactive projection system including M input devices and projection devices. Each input device includes a color code and a touch portion. The projection device comprises a projection module, a first image capturing module, a second image capturing module and a processing module. The color code is composed of color data and position data and the color code defines a function of the input device, wherein M is a positive integer greater than or equal to 1. The touch portion is adjacent to the coding region of the color code. The projection module is connected to the host device through the transmission channel to receive the screen image of the host device, and projects the screen image to the screen to generate a projection image. The first image capturing module is configured to capture an image of the input device, and the second image capturing module is configured to capture an image of the input device. The processing module is connected to the first and second image capturing modules. In a calibration mode, the processing module passes through the first and second image capturing modules to define a touch portion of the input device as a center, and Corresponding to the first radius and the second radius corresponding to the position data, and the touch portion is positioned for coordinate correction, wherein the processing module compares the color code of the input device with the lookup table and transmits the function accordingly Identify the data to the host device to determine the function of the input device.

In one embodiment of the present invention, when the interactive projection system enters the normal mode, the movement trajectory of the input device on the projection screen is correspondingly displayed on the screen image through the projection device.

In one embodiment of the present invention, the processing module performs color filter determination on the color data of the color code of the input device through the first and second image capturing modules.

In one embodiment of the present invention, the lookup table is configured in the storage unit, and the lookup table defines a correspondence between the color code and the function of the input device, wherein the storage unit is a mask read-only memory (Mask ROM), erasable Read only memory (EPROM), Electrically erasable read-only memory (EEPROM) or flash memory.

In one embodiment of the invention, the transmission channel is a transmission cable or a wireless transmission channel utilizing a wireless communication protocol.

In one embodiment of the present invention, the touch portion is a light emitting portion, and the light emitting portion includes a light emitting module, a battery unit, and a touch sensing unit. The light emitting module is configured to emit visible light or invisible light. The battery unit is electrically connected to the light-emitting module, and the battery unit is used to provide power required for the operation of the light-emitting module. The touch sensing unit is electrically connected to the light emitting module, and the touch sensing unit is configured to determine whether the input device touches the screen, wherein if the touch sensing unit touches the screen, the touch sensing unit transmits the light emitting signal to The light-emitting module emits light by triggering the light-emitting module.

Embodiments of the present invention provide an interactive projection method for an interactive projection system. The interactive projection system includes M input devices and projection devices, wherein each input device includes a color code and a touch portion adjacent to the code region of the color code, and the projection device includes a projection module, a first image capture module, a second image capturing module and a processing module, wherein the projection module is connected to the host device through a transmission channel, and the processing module is connected to the first and second image capturing modules, wherein the color code is composed of color data and location data. Composing and defining the function of the input device, the interactive projection method comprises: receiving a screen image of the host device, and projecting the screen image to the screen to generate a projection image; capturing the first and second image capturing modules Inputting an image of the device; in the calibration mode, the processing module defines the touch portion of the input device as a center through the first and second image capturing modules; and the first radius corresponding to the position data is set through the processing module a second radius, and positioning the touch portion for coordinate correction; and comparing the color code of the input device with the lookup table through the processing module and transmitting the function accordingly The data is identified to the host device to determine the function of the input device, where M is a positive integer greater than or equal to one.

In summary, the interactive projection system and the interactive projection method thereof according to the embodiments of the present invention define or recognize the function of the input device through the color code on the input device. By changing the color data and the location data to form different color codes to correspond to the functions of different input devices and to further distinguish the input devices of different functions, the cost can be reduced and the user-friendly use can be achieved. Furthermore, the embodiments of the present invention can be applied to multiple input devices simultaneously, and there is no limit to the number of input devices.

The detailed description of the present invention and the accompanying drawings are to be understood by the claims The scope is subject to any restrictions.

100‧‧‧Interactive projection system

110‧‧‧Input device

112‧‧‧Coded area

114‧‧‧Touch

1141‧‧‧Lighting Module

1142‧‧‧ battery unit

1143‧‧‧Touch sensor unit

120‧‧‧Projection device

122‧‧‧Projection Module

124‧‧‧First image capture module

126‧‧‧Second image capture module

127‧‧‧Processing module

128‧‧‧ lookup table

130‧‧‧Host device

140‧‧‧ screen

150‧‧‧Transmission channel

BV‧‧‧electric energy

FD‧‧‧Function Identification Information

LS‧‧‧ illuminating signal

R1‧‧‧ first radius

R2‧‧‧second radius

SI‧‧·screen image

S410, S420, S430, S440, S450‧‧ steps

1 is a schematic diagram of an interactive projection system in accordance with an illustrative embodiment of the invention.

2 is a block diagram of an interactive projection system in accordance with an illustrative embodiment of the invention.

3A and 3B are schematic diagrams showing the function of an identification input device according to an exemplary embodiment of the present invention.

4 is a flow chart of an interactive projection method in accordance with an exemplary embodiment of the present invention.

Various illustrative embodiments are described more fully hereinafter with reference to the accompanying drawings. However, the inventive concept may be embodied in many different forms and should not be construed as being limited to the illustrative embodiments set forth herein. Rather, these exemplary embodiments are provided so that this invention will be in the In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. Similar numbers always indicate similar components.

It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, such elements are not limited by the terms. These terms are used Distinguish between one component and another component. Thus, a first element discussed below could be termed a second element without departing from the teachings of the inventive concept. As used herein, the term "and/or" includes any of the associated listed items and all combinations of one or more.

[Embodiment of Interactive Projection System]

Please refer to FIG. 1 and FIG. 2 together. FIG. 1 is a schematic diagram of an interactive projection system according to an exemplary embodiment of the present invention. 2 is a block diagram of an interactive projection system in accordance with an illustrative embodiment of the invention. The interactive projection system 100 includes M input devices 110 and projection devices 120, where M is a positive integer greater than or equal to 1 and FIG. 1 is merely an illustration of an actual operating environment, which is not limited in the present invention. Each input device 110 includes a color code and a touch portion 114. The projection device 120 includes a projection module 122, a first image capturing module 124, a second image capturing module 126, and a processing module 127. The touch portion 114 is adjacent to the code region 112 of the color code. The projection module 122 is connected to the host device 130 through the transmission channel 150. Further, the host device 130 performs data transmission with the projection device 120 through the transmission channel 150, so that the data stored in the host device 130 can be hosted through the projection device 120. The screen image SI of the device 130 is projected onto the screen 140 to generate a corresponding projected picture. The processing module 127 is connected to the first image capturing module 124 and the second image capturing module 126. In general, the screen 140 is typically disposed in front of the projection aperture of the projection device 120, and the background is typically white to facilitate projection by the projection device 120 to produce a projected image. However, since the screen 140 has no actual action, but is only a plane that can be projected, it is not shown in the functional block diagram of FIG. 2, but it does not mean that the interactive projection system 100 does not need to use the screen 140.

In this embodiment, the color code is composed of color data and location data, and the interactive projection system 100 can define the function of the input device 110 through the color code, wherein the color data can be, for example, red, yellow or green. However, it is not limited to the enumerators. Specifically, in an embodiment, the input device 110 is generally designed as a one-piece housing for user operation, and the present disclosure is applied to the input device 110 by a color ring. The coding region 112, and different colors are defined by the color ring at different positions of the coding region 112 and the color of the color circle itself. The code (i.e., encoded), and the different color codes define different functions of the input device 110, and the correspondence between the color code and the function of the input device 110 is built into the lookup table 128. That is to say, under the same input device 110, if the color code is changed (i.e., at least one of the color data and the location data is changed), the original function of the input device 110 is switched to another specific function.

In addition, the projection module 122 is connected to the host device 130 through the transmission channel 150 to receive the screen image SI transmitted by the host device 130, and the projection module 122 projects the screen image SI to a screen 140 to generate a projection image, wherein the transmission channel 150 is a transmission cable or wireless transmission channel using one of the wireless communication protocols. For example, when the signal connection mode between the projection device 120 and the host device 130 is a wired electrical connection, the projection device 1200 has an image transmission line (not shown), and the host device 130 has a connection corresponding to the image transmission line. (port, not shown), where the port is, for example, a VGA port or an HDMI port. The host device 130 can be electrically connected to the projection device 120 through the plug-in connection between the image transmission line and the connection port, so that the electrical signal can be transmitted to the projection device 120. When the signal connection mode between the projection device 120 and the host device 130 is wirelessly connected, a wireless connection can be established between the projection device 120 and the host device 130 via a Bluetooth or wireless network. In this manner, the projection device 120 can receive the wireless signal from the host device 130 and project the image corresponding to the wireless signal on the screen 140. The wireless signal can be in the form of radio frequency (RF), and the typical frequency range can be divided into 30KHz~ 300KHz low frequency band, 300KHz~3MHz IF band and 3MHz~30MHz high frequency band. Those skilled in the art can use the very low frequency band of 3 kHz to 30 kHz to the very high frequency band of 30 GHz to 300 GHz, as the case may be, and the present invention is not limited thereto.

Generally, the screen image SI of the host device 130 can be electrically connected to a liquid crystal display (LCD) or a cathode ray tube (CRT) of the host device 130 (not shown in the figure). 2) to present. In addition, the screen image SI can be presented without being transmitted through the display device, but directly projected onto the screen 12 through the projection device 10. For example, when the host When the device 130 is a desktop computer, the operator does not have to electrically connect the desktop computer to the liquid crystal display, but can directly connect the desktop computer to the projection device 120 to perform the desktop computer smoothly. The operation is such that the projection screen generated by the projection device 120 is also equivalent to the screen image SI. Therefore, the present invention does not limit whether or not the display device is required.

The first and second image capturing modules 124 and 126 are configured to capture an image of the input device 110. In practice, the first and second image capturing modules 124 and 126 may be made of a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The components of the image can be sensed, but the invention is not limited thereto. In one embodiment, the touch portion 114 of the input device 110 is a light emitting portion, and the light emitting portion includes a light emitting module 1141, a battery unit 1142, and a touch sensing unit 1143. The light-emitting module 1141 is configured to emit visible light or invisible light (for example, infrared light), and the battery unit 1142 is electrically connected to the light-emitting module 1141. The battery unit 1142 is configured to provide the electric energy BV required for the operation of the light-emitting module 1141. The touch sensing unit 1143 is electrically connected to the light emitting module 1141. The touch sensing unit 1143 is configured to determine whether the input device 110 touches the screen 140. If the touch sensing unit 1143 touches the screen 140, the touch sensing unit 1143 The illuminating signal LS is transmitted to the illuminating module 1141 to trigger the illuminating module 1141 to emit light.

What is to be taught next is to further explain the working principle of the interactive projection system 100.

Please refer to FIG. 3A and FIG. 3B simultaneously. FIGS. 3A and 3B are schematic diagrams showing the function of the identification input device according to an exemplary embodiment of the present invention. When the interactive projection system 100 is in the calibration mode, the processing module 127 passes the first and second image capturing modules 124 and 126 to define the touch portion 114 of the input device 110 as a center, and according to The first radius r1 and the second radius r2 corresponding to the position data are set, and the position of the touch portion 114 is positioned for coordinate correction, wherein the second radius r2 is greater than the first radius r1. Next, the processing module 127 will begin to recognize the color code on the input device 110. Further, the processing module 127 transmits the first and second image capturing modules. 124 and 126 will sequentially search for color data in the first circle (ie, within the first radius r1) and the second circle (ie, the second radius r2 minus the first radius r1) (ie, for the input device 110) The color code of the color code is subjected to color filter determination) to compare the color code of the input device 110 with the lookup table 128, and accordingly transmit the function identification data FD to the host device 130 to determine the function of the input device 110. It should be noted that the disclosure mainly defines the function of the input device 110 by the color code formed by the color data and the location data, and therefore is not limited by the number of colors and the number of location materials, and the first circle To indicate the location data of the first location, the second circle is the location data indicating the second location. Accordingly, the interactive projection system 100 is capable of distinguishing different input devices in a color code manner to reduce cost and conform to humanized use, and is suitable for simultaneous use of a plurality of input devices without limiting the number of input devices.

When the interactive projection system 100 enters the normal mode, the present embodiment can display the movement trajectory of the input device 110 on the projection screen correspondingly to the screen image through the projection device 120. For example, when the color code of the input device 110 is defined as a red writing pen, the user may display a red moving track by using the movement track of the input device 110 on the screen 140. Similarly, when the color code of the input device 110 is defined as a yellow writing pen, the user can display a yellow moving track by using the movement track of the input device 110 on the screen 140.

It is worth mentioning that the lookup table 128 is configured in the storage unit, and in the embodiment, the lookup table 128 is defined as a correspondence between the color code and the function of the input device 110, wherein the storage unit is a mask read-only memory ( Mask ROM), erasable read-only memory (EPROM), electrical erasable read-only memory (EEPROM) or flash memory.

[An embodiment of an interactive projection method]

Please refer to FIG. 4. FIG. 4 is a flowchart of an interactive projection method according to an exemplary embodiment of the present invention. The exemplary step flow described in this embodiment can be implemented by the interactive projection system 100 shown in FIG. 2, so please refer to FIG. 2 for illustration and understanding. The interactive projection method includes the following steps: receiving a screen image of the host device and displaying the screen The image is projected to the screen to generate a projected picture (step S410). The image of the input device is captured by the first and second image capturing modules (step S420); in the calibration mode, the processing module transmits the touch device of the input device through the first and second image capturing modules Defined as a center of the circle (step S430); setting a first radius and a second radius corresponding to the position data through the processing module, and positioning the touch portion for coordinate correction (step S440); and inputting the input device through the processing module The color code is compared with the lookup table and the function identification data is transmitted to the host device to determine the function of the input device (step S450), where M is a positive integer greater than or equal to one.

Details regarding the steps of the interactive projection method of the interactive projection system have been described in detail in the above-described embodiments of FIGS. 1 to 3A and 3B, and will not be described herein.

It should be noted that the steps of the embodiment of FIG. 4 are only for convenience of description, and the embodiments of the present invention do not use the steps of the steps as a limitation of the embodiments of the present invention.

[Possible effects of the examples]

In summary, the interactive projection system and the interactive projection method thereof according to the embodiments of the present invention define or recognize the function of the input device through the color code on the input device, and form different by changing the color data and the position data. The color code can be used to correspond to the functions of different input devices and can further distinguish different input devices, thereby reducing the cost and conforming to humanized use.

At least one of the embodiments of the present disclosure can be applied to multiple input devices simultaneously, without limiting the number of input devices.

The above description is only an embodiment of the present invention, and is not intended to limit the scope of the invention.

100‧‧‧Interactive projection system

110‧‧‧Input device

114‧‧‧Touch

1141‧‧‧Lighting Module

1142‧‧‧ battery unit

1143‧‧‧Touch sensor unit

120‧‧‧Projection device

122‧‧‧Projection Module

124‧‧‧First image capture module

126‧‧‧Second image capture module

127‧‧‧Processing module

128‧‧‧ lookup table

130‧‧‧Host device

150‧‧‧Transmission channel

BV‧‧‧electric energy

FD‧‧‧Function Identification Information

LS‧‧‧ illuminating signal

SI‧‧·screen image

Claims (10)

An interactive projection system comprising: M input devices, each of the input devices comprising a color code and a touch portion; wherein the color code comprises a color ring and an encoding region, and a color data of the color ring is used a color circle is located at a position of the code region to define a function of the input device, wherein M is a positive integer greater than or equal to 1; and the touch portion is adjacent to the code region; and a projection device includes: a projection module Connecting to a host device through a transmission channel to receive a screen image of the host device, and projecting the screen image to a screen to generate a projection image; a first image capturing module for capturing the input An image of the device; a second image capture module for capturing an image of the input device; and a processing module coupled to the first image capture module and the second image capture module In the calibration mode, the processing module uses the first image capturing module and the second image capturing module to define the touch portion of the input device as a center of the circle, and accordingly, corresponding to the location a first radius and a second radius, and the touch portion is positioned for coordinate correction; wherein the processing module is to be identified by the first image capturing module and the second image capturing module Obtaining the color code of the input device and comparing it with a lookup table, and transmitting a function identification data to the host device to determine the function of the input device, wherein the color code and the input device are built in the lookup table The correspondence of functions. The interactive projection system of claim 1, wherein when the interactive projection system enters a normal mode, the projection device displays the movement trajectory of the input device on the projection screen correspondingly on the screen image. The interactive projection system of claim 1, wherein the processing module transmits the And the second image capturing module performs color filter determination on the color data of the color code of the input device. The interactive projection system of claim 1, wherein the lookup table is configured in a storage unit, and the lookup table defines a correspondence between the color code and a function of the input device, wherein the storage unit is a reticle read-only memory. Mask (ROM), erasable read-only memory (EPROM), electrical erasable read-only memory (EEPROM) or flash memory. The interactive projection system of claim 1, wherein the transmission channel is a transmission cable or a wireless transmission channel using one of wireless communication protocols. The interactive projection system of claim 1, wherein the touch portion is a light emitting portion, and the light emitting portion comprises: a light emitting module for emitting a visible light or an invisible light; and a battery unit electrically connected The light-emitting module is configured to provide electrical energy required for the operation of the light-emitting module, and a touch-sensing unit electrically connected to the light-emitting module, wherein the touch-sensing unit is configured to determine whether the input device touches When the touch sensing unit touches the screen, the touch sensing unit transmits a lighting signal to the lighting module to trigger the lighting module to emit light. An interactive projection method for an interactive projection system, the interactive projection system comprising M input devices and a projection device, wherein each of the input devices comprises a color code and one of adjacent one of the code regions of the color code The touch device includes a projection module, a first image capture module, a second image capture module, and a processing module. The projection module is connected to a host device through a transmission channel. The processing module is connected to the first image capturing module and the second image capturing module, wherein the color code comprises a color ring and an encoding region, and a color data transmitted through the color ring and the color ring are located in the coding region. Positioning data to define a function of the input device, the interactive projection method comprising: receiving a screen image of the host device, and projecting the screen image to a screen And generating, by the first and second image capturing modules, the image of the input device; and in a calibration mode, the processing module transmits the first and second image capturing modes The group defines the touch portion of the input device as a center; a first radius and a second radius corresponding to the position data are set by the processing module, and the touch portion is positioned for coordinate correction; The processing module detects that the color code of the input device is compared with a lookup table by the first image capturing module and the second image capturing module, and transmits a function identification data to the host device. To determine the function of the input device; wherein M is a positive integer greater than or equal to 1, and the lookup table has a corresponding relationship between the color code and the function of the input device. The interactive projection method of claim 7, wherein when the interactive projection system enters a normal mode, the projection device displays the movement trajectory of the input device on the projection screen correspondingly on the screen image. The interactive projection method of claim 7, wherein the touch portion is a light emitting portion, and the light emitting portion comprises: a light emitting module for emitting a visible light or an invisible light; and a battery unit electrically connected The light-emitting module is configured to provide electrical energy required for the operation of the light-emitting module, and a touch-sensing unit electrically connected to the light-emitting module, wherein the touch-sensing unit is configured to determine whether the input device touches When the touch sensing unit touches the screen, the touch sensing unit transmits a lighting signal to the lighting module to trigger the lighting module to emit light. An input device is applicable to a projection device, the projection device includes a projection module, a first image capturing module, a second image capturing module and a processing module, and the projection module transmits through a transmission channel Connected to a host device, the process The module is connected to the first image capturing module and the second image capturing module. The input device includes: a color code, the color code includes a color ring and an encoding area, and a color data of the color ring is transmitted through The color ring is located at a position of the coded area to define a function of the input device; and a touch part is adjacent to the coded area, and the touch part is used by the processing module in a calibration mode, the processing module The first image capturing module and the second image capturing module are configured to define the touch portion of the input device as a center of the circle, and accordingly set a first radius corresponding to the position data and a first a second radius, and the touch portion is positioned for coordinate correction; wherein the color code is obtained by the processing module through the first image capturing module and the second image capturing module The lookup table compares and transmits a function identification data to the host device to determine the function of the input device, wherein the lookup table has a corresponding relationship between the color code and the function of the input device.