CN202134122U - Interactive projection system - Google Patents

Abstract

The utility model relates to an interactive projection system, it contains processing apparatus, projection arrangement and pen type device. The processing device is used for outputting an original image signal. The projection device is electrically coupled to the processing device to receive the original image signal. The projection device comprises a coding module, a projection module, at least one wireless receiving module and a sound processing module. The pen-type device comprises a sensor, a microphone and at least one wireless transmission module.

Description

Interactive Projection System

technical field

The utility model relates to a projection system, in particular to an interactive projection system including a microphone function.

Background technique

With the development of science and technology, the wave of digitalization continues to spread. In recent years, the government has gradually allocated funds to the establishment of digital teaching. Among them, the interactive electronic whiteboard is an excellent auxiliary tool for presentations. Users can directly manipulate, write, or use other software on the whiteboard through the electronic whiteboard pen during the teaching process.

With the assistance of electronic whiteboards, users can use resources more efficiently and cost-effectively, and give full play to the effect of information technology in teaching. Compared with the cost of building a computer room, electronic whiteboards can be said to be a great cost savings.

In addition, the interactive electronic whiteboard does not generate dust during the cleaning process, and can also reduce waste during the cleaning process. The impact on the user's respiratory system will be lower than that of traditional blackboards.

In terms of application, the interactive electronic whiteboard is a colorful and visualized learning tool. In the classroom teaching, the user marks the relevant learning points or the places that students need to pay attention to, and uses the whiteboard marker to mark the relevant information with special colors or graphics in real time.

FIG. 1 is a schematic diagram illustrating an interactive projection system 200 according to the prior art. The interactive projection system 200 includes a processing device 210 , a projection device 220 and a pen device 230 . Additionally, there is a screen 240 in FIG. 1 .

As shown in FIG. 1 , the operation of the interactive projection system 200 is as follows. First, as shown in path A, the processing device 210 is used to output the original image signal, and the projection device 220 is electrically coupled to the processing device 210 to receive the original image signal. Next, the original image signal is processed by the projection device 220 to output the original image to the screen 240 as shown in path B. The original image of the pattern is sent to the screen 240 .

Next, as shown in path C, when the pen-type device 230 points to the screen 240, the pen-type device 230 can detect the original image containing the coding pattern. Then, as shown in path D, the pen-shaped device 230 wirelessly transmits the original image containing the coded pattern to the projection device 220, and the projected device 220 decodes the coded pattern corresponding to the position pointed by the pen-shaped device 230, and after decoding, it can be obtained The coordinates of the location pointed by the pen-type device 230 .

Subsequently, the projection device 220 outputs a coordinate control signal to the processing device 210 according to the coordinates of the position pointed by the pen-type device 230 as shown in the path E. Furthermore, the processing device 210 is used to output the image signal containing the coordinate mark to the projection device 220 according to the coordinate control signal, and then the projection device 220 processes the image signal containing the coordinate mark to output the image signal containing the coordinate mark to the screen 240 , thus forming a cycle of the utility model embodiment.

The so-called coordinate mark is to form a black dot corresponding to the position pointed by the pen-type device 230 on the image projected to the screen 240. In short, when the pen-type device 230 points to any point on the screen, after completing a cycle , a black dot will be produced at the position pointed by the pen-type device 230. In this way, when the pen-type device 230 moves relative to the screen 240, the projection device 220 will generate a series of coordinate control signals, and the processing device 210 can generate a series of points on the screen after receiving the aforementioned coordinate control signals, thereby Form any character or mark that the user wants to write.

For example, the processing device 210 may be a desktop computer or a notebook computer, the projection device 220 may be a Digital Light Processing (DLP) projector, and the pen device 230 may be an RF electronic whiteboard marker.

A specific embodiment of the actions of the interactive projection system 200 in the prior art will be introduced below.

First, the computer outputs the original image signal to the DLP projector through the VGA or DVI cable. After the DLP projector processes the original image signal, it outputs the original image to the screen 240. At the same time, the DLP projector mixes the special coding pattern into the original image. Secondly, when the pen tip of the RF electronic whiteboard pen points to the screen 240, the photoelectric sensor in the pen tip can be used to sense the special coding pattern, and then the photoelectric sensor passes the received special code (equal to the coordinates of the pen tip) The wireless transmission module wirelessly transmits to the DLP projector.

Then, the DLP projector transmits the coordinate data to the computer through the USB port, and the application software on the computer can use the coordinate data to control the mouse. In this way, the user can use the RF electronic whiteboard pen to write on the original screen.

This shows that above-mentioned existing mode obviously still has inconvenience and defective, and needs to be further improved. In order to solve the above-mentioned problems, related fields have tried their best to seek a solution, but no applicable method has been developed for a long time.

Therefore, when the user needs both the interactive electronic whiteboard and the microphone, how to avoid the prior art shown in FIG. The problem, and how to improve the problem that the interactive projection system 200 alone cannot provide sound for distance teaching or after-school review, is one of the current important research and development topics, and it has also become an urgent goal for improvement in related fields.

Utility model content

One purpose of the present utility model is to provide an interactive projection system, which integrates the functions of an electronic whiteboard marker and a microphone in a pen-type device, so that users can use a single pen-type device with two functions at the same time, and improve the ability to use a single pen-type device There is a problem that the interactive projection system cannot provide sound when used in distance teaching or after-class review.

To achieve the above purpose, the utility model provides an interactive projection system, which is characterized in that it includes: a processing device for outputting an original image signal; a projection device electrically coupled to the processing device to receive the original image signal, the projection device includes: an encoding module, used to encode an encoding pattern into the original image signal; a projection module, electrically coupled to the encoding module, the encoding module will include the encoding pattern through the projection module The original image signal is projected onto a screen to present an original image containing the encoding pattern on the screen; at least one wireless receiving module is electrically coupled to the encoding module; and an audio processing module is electrically coupled In the wireless receiving module; and the pen-type device, including: a microphone, used to convert a sound into an electrical signal; at least one wireless transmission module, used to wirelessly transmit the electrical signal to the wireless of the projection device a receiving module, whereby the sound processing module of the projection device receives the electrical signal from the wireless receiving module, processes the electrical signal to generate a sound signal; and a sensor, used to detect an environmental condition, so that the The pen-type device outputs a control signal to turn off the wireless transmission module according to the environmental condition.

According to an embodiment of the present invention, the sensor is an optical sensor, which is used to detect the original image containing the encoding pattern and wirelessly transmit it to the encoding module through the wireless transmission module, so that the encoding module outputs a coordinate control signal, thereby enabling the processing device to use The image signal including the coordinate mark is output according to the coordinate control signal.

According to another embodiment of the present invention, the projection device further includes a sound amplification module and a digital-to-analog conversion module. The sound amplification module is used for receiving sound signals and processing the sound signals to emit processed sounds. The digital-to-analog conversion module is electrically coupled to the wireless receiving module, and the digital-to-analog conversion module is used for digital-to-analog conversion of electrical signals and outputting to the sound processing module.

According to yet another embodiment of the present invention, the projection device further includes an audio signal amplifier. The sound signal amplifier is electrically coupled to the sound processing module, and is used for amplifying the sound signal and outputting it to the sound amplification module.

According to yet another embodiment of the present invention, the projection device further includes a sound controller. The digital-to-analog conversion module is also used to output the digital-to-analog converted electrical signal to the sound controller, and the sound controller is used to convert the electrical signal into a data packet and output it to the processing device.

According to yet another embodiment of the present invention, the processing device further includes a video recording module. The recording module is used for recording sound according to data packets.

According to yet another embodiment of the present invention, the pen-type device further includes an electrical signal amplifier and an analog-to-digital converter. The electric signal amplifier is electrically coupled to the microphone and used for amplifying and processing the electric signal. The analog-to-digital converter is electrically coupled to the electrical signal amplifier, and is used for analog-to-digital conversion of the electrical signal and wirelessly transmits the electrical signal to the wireless receiving module through the wireless transmission module.

According to yet another embodiment of the present invention, the processing device further includes a video recording module. The video recording module is used for recording image signals containing coordinate marks.

According to yet another embodiment of the present invention, the wireless transmission module includes a coordinate wireless transmission module and a sound wireless transmission module. The coordinate wireless transmission module, the original image containing the coding pattern is wirelessly transmitted to the coding module through the coordinate wireless transmission module. The sound wireless transmission module is used for wirelessly transmitting electrical signals to the wireless receiving module. When the light sensor does not detect the original image containing the coding pattern, the pen-type device turns off the coordinate wireless transmission module.

According to yet another embodiment of the present invention, the encoding module is used to encode the coordinate system into the original image signal to generate the encoded image signal; the projection device is used to project the encoded image signal to the screen to present the encoded image; the optical sensor The coded image used to detect a position corresponding to the pen-type device on the screen is wirelessly transmitted to the coding module through the wireless transmission module; the coding module is also used to generate a coordinate control signal representing the corresponding position according to the coded image of the corresponding position, And the coordinate control signal is transmitted to the processing device through the projection device; the processing device is used to output the image signal containing the mark of the corresponding position according to the coordinate control signal.

The beneficial effects of the utility model are: the interactive projection system of the utility model can integrate the functions of the electronic whiteboard marker and the microphone in the pen-type device, which is convenient for users to use a single pen-type device with two functions at the same time, and improves There is a problem that the interactive projection system cannot provide sound when used in distance teaching or after-class review.

Description of drawings

In order to make the above and other purposes, features and advantages of the present utility model more obvious and understandable, preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic diagram illustrating an interactive projection system according to the prior art.

FIG. 2 is a schematic diagram illustrating the relationship between a projection device and a pen-type device according to an embodiment of the present invention.

FIG. 3 is a schematic diagram illustrating the relationship between a projection device and a pen-type device according to another embodiment of the present invention.

FIG. 4 is a schematic block diagram illustrating a processing device according to yet another embodiment of the present invention.

FIG. 5A is a schematic diagram of the appearance of a pen-shaped device according to another embodiment of the present invention.

FIG. 5B is a schematic diagram illustrating the appearance of a pen-shaped device according to another embodiment of the present invention.

Detailed ways

The following examples are listed in detail with accompanying drawings, but the provided examples are not intended to limit the scope of the present utility model, and the description of the structure and operation is not intended to limit the order of its execution, any structure recombined by components , the resulting devices with equal efficacy are all within the scope of the present utility model. The accompanying drawings are for illustration purposes only and are not drawn to original scale.

FIG. 2 is a schematic diagram illustrating the relationship between a projection device 120 and a pen-shaped device 130 according to an embodiment of the present invention. FIG. 3 is a schematic diagram illustrating the relationship between a projection device 120 and a pen-type device 130 according to another embodiment of the present invention.

What needs to be explained here is that the interactive projection system 100 respectively introduces two action modes in FIG. 2 and FIG. An interactive projection system 100 of a utility model. Therefore, in terms of production, the projection device 120 and the pen-type device 130 of the interactive projection system 100 may respectively include corresponding elements in FIG. 2 and FIG. 3 .

As shown in FIG. 2 , the projection device 120 includes a projection module 121 , an encoding module 122 and a coordinate wireless receiving module 123 , while the pen-type device 130 includes a coordinate wireless transmission module 131 and a light sensor 132 .

Please refer to Figure 2. The encoding module 122 is used for encoding the encoding pattern into the original image signal and projecting it to the screen 240 shown in FIG. 1 through the projection module 121 to present the original image including the encoding pattern. For example, the encoding module 122 can be a field-programmable gate array (Field-Programable Gate Array, FPGA) chip, but it is not used to limit the utility model, anyone skilled in the art, without departing from the spirit of the utility model And within the scope, any element with the same function can be used.

In addition, the sensor 132 in the pen-type device 130 is used to detect the environmental conditions. For example, the light sensor 132 in the pen-type device 130 is used to detect the original image containing the coding pattern, and wirelessly transmit the coordinates to the coordinates through the coordinate wireless transmission module 131. Wireless receiving module 123. The encoding module 122 obtains the original image containing the encoding pattern from the coordinate wireless receiving module 123 , decodes the encoding pattern, and then outputs a coordinate control signal.

It should be noted here that the wireless transmission module and wireless receiving module in the entire specification can all adopt RF, FM, Bluetooth or 2.4Ghz technology according to actual needs, but it is not intended to limit the utility model, any technical field Those skilled in the art may adopt any wireless transmission technology without departing from the spirit and scope of the present utility model.

Furthermore, the processing device 110 shown in FIG. 1 is configured to output an image signal including a coordinate mark according to the coordinate control signal. Coordinate marks have been disclosed in the description of FIG. 1 and will not be repeated here.

In terms of operation, the detailed action mode is as follows. The encoding module 122 is used for encoding the coordinate system into the original image signal to generate an encoded image signal. The projection module 121 is used for projecting the encoded image signal to the screen 240 to present the encoded image.

When the pen-shaped device 130 points to the screen 240, the light sensor 132 is used to detect the coded image of a position corresponding to the pen-shaped device 130 on the screen, and wirelessly transmits to the coordinate wireless receiving module 123 of the projection device 120 through the coordinate wireless transmission module 131 , and then output to the encoding module 122 by the coordinate wireless receiving module 123 .

The coding module 122 is also used to generate a coordinate control signal representing the corresponding position according to the coded image of the corresponding position, that is, the coding module 122 decodes the coded image of the corresponding position, and after decoding, the pointer to the pen-type device 130 can be obtained. Then, the encoding module 122 generates a coordinate control signal according to the aforementioned coordinates, and transmits the coordinate control signal to the processing device 110 through the connection interface (such as: USB connection interface) between the projection device 120 and the processing device 110 .

The processing device 110 is used to output an image signal containing a mark at the corresponding position according to the coordinate control signal. After the projection device 120 receives the image signal containing a mark at the corresponding position, the output image is at the position pointed by the pen-type device. A mark is generated, for example a black dot. In this way, when the pen-type device 130 moves relative to the screen 240, the projection device 120 will generate a series of coordinate control signals, and the processing device 110 can generate a series of marks on the screen after receiving the aforementioned coordinate control signals, thereby Form any character or mark that the user wants to write.

As shown in Figure 3, projection device 120 comprises sound wireless receiving module 124, digital-to-analog conversion module 125, sound processing module 126, sound signal amplifier 127 and loudspeaker module 128, and pen type device 130 comprises microphone 134, electric signal An amplifier 135 , an analog-to-digital converter 136 and a sound wireless transmission module 137 .

As shown in FIG. 3 , an operation mode of the embodiment of the present invention is as follows. First, the pen-type device 130 converts the received sound into an electrical signal, and outputs the electrical signal to the projection device 120 , and then the projection device 120 processes the electrical signal to output an audio signal.

In detail, in the pen-type device 130 , the microphone 134 is used to convert the sound into an electrical signal, that is, convert the vibration of the sound emitted by the user into a tiny electrical signal. The electrical signal amplifier 135 is electrically coupled to the microphone 134 and used for amplifying the electrical signal.

In addition, the analog-to-digital converter 136 is electrically coupled to the electrical signal amplifier 135. The analog-to-digital converter 136 is used to perform analog-to-digital conversion on the electrical signal, that is, to digitize the analog electrical signal. Then, the electrical signal is wirelessly transmitted through the audio wireless transmission module 137. The sound is transmitted to the wireless audio receiving module 124 of the projection device 120 .

In the projection device 120 , the digital-to-analog conversion module 125 is electrically coupled to the audio wireless receiving module 124 . After receiving the electrical signal, the sound wireless receiving module 124 outputs the electrical signal to the digital-to-analog conversion module 125 . The digital-to-analog conversion module 125 is used to perform digital-to-analog conversion on the electrical signal, and output the converted analog signal to the sound processing module 126 .

Next, the sound processing module 126 processes the converted analog signal to generate a sound signal. The sound signal amplifier 127 is electrically coupled to the sound processing module 126 for amplifying the sound signal and outputting it to the sound amplification module 128 . The sound amplification module 128 is used for receiving the amplified sound signal, and processing the amplified sound signal to emit the processed sound.

In an optional embodiment, the sound processing module 126 can perform various sound effect processing on the electrical signal, such as Echo, EQ, Bass, Tone, Surround, Volume control, and sound mixing...etc. The electrical signal will generate a sound signal after being processed by the sound processing module 126 , and then the sound signal will be amplified by the sound signal amplifier 127 , and then the user's voice will be played out by the sound amplification module 128 .

On the other hand, the interactive projection system 100 can be used to record images and sounds. FIG. 4 is a schematic block diagram illustrating a processing device 110 according to yet another embodiment of the present invention. The processing device 110 may include a recording module 111 and a video recording module 112 .

Please refer to Figure 3 and Figure 4 at the same time. 3 may further include a sound controller 129 electrically coupled to the digital-to-analog conversion module 125 . The digital-to-analog conversion module 125 can be used to output the digital-to-analog converted electrical signal to the sound controller 129 , and the sound controller 129 can be used to convert the electrical signal into a data packet and output it to the processing device 110 . Secondly, after the processing device 110 processes the data packet, the recording module 111 records the sound.

In addition, the video recording module 112 is used to record an image signal including coordinate marks, that is to say, the video recording module 112 can record the image together with the words written or marks made by the user on the image.

In an optional embodiment, the processing device 110 can also record audio and video only with the help of related recording software, without using the audio recording module 111 and the video recording module 112 .

In this way, if the interactive projection system 100 is applied to teaching, especially to distance teaching and after-class review, the voice of the teacher in class and the key marks made on the electronic lecture notes can be recorded together, When watching the recorded audio and video, the students will feel as if the teacher is teaching in person, follow the rhythm of the teacher to listen to the lecture, and clearly understand the key points of the class through the key marks, which is helpful for students' learning, so as to maximize the digital teaching effect.

FIG. 5A is a schematic diagram illustrating the appearance of a pen-shaped device 130 according to yet another embodiment of the present invention. FIG. 5B is a schematic diagram illustrating the appearance of a pen-shaped device 130 according to yet another embodiment of the present invention.

As shown in FIG. 5A , the pen-type device 130 includes a light sensor 132 , a coordinate wireless transmission module 131 , a microphone 134 and a sound wireless transmission module 137 . In addition, there is a screen 240 in FIG. 5A . In this embodiment, the user uses the two action modes of the pen-type device 130 at the same time, wherein the action mode of the pen-type device 130 has been described above, and will not be repeated here.

Referring to FIG. 5B , the elements included in the pen-type device 130 have been described in FIG. 5A . It should be noted here that the sensor 132 of the pen-type device 130 is used to detect the environment condition, so that the pen-type device 130 outputs a control signal to turn off the wireless transmission module 131 according to the environment condition.

For example, the sensor 132 of the pen-type device 130 can be a light sensor 132 . As shown in Figure 5B, the pen-type device 130 is not directed to the screen 240, so when the light sensor 132 does not detect the original image containing the coded pattern, the pen-type device 130 will output a control signal to turn off the coordinate wireless transmission module 131 to save Power for the pen-type device 130 . In this case, the user only uses the function of the microphone 134 of the pen-type device 130 , that is, only uses the pen-type device 130 as a microphone. The above is only a preferred embodiment, and the sensor can be other sensors that can achieve this purpose, but it is not used to limit the utility model, any person skilled in the art, without departing from the spirit and scope of the utility model, should be able to Use any element with the same function.

It can be seen from the above embodiments of the utility model that the application of the utility model has the following advantages. The embodiment of the present invention provides an interactive projection system to integrate the functions of an electronic whiteboard marker and a microphone in a pen-type device, so that users can use a single pen-type device with two functions at the same time. In addition, when the pen-type device 130 is not pointed at the screen 240 , the user can only use the function of the microphone 134 to use the pen-type device 130 as a microphone.

Furthermore, in the embodiment of the present invention, by applying the interactive projection system 100 to teaching, especially to distance teaching and after-school review, the voice of the teacher in class and the key marks made on the electronic handouts can be combined It is recorded, so that when students watch the recorded audio and video, they will feel as if the teacher is teaching in person, follow the rhythm of the teacher to listen to the lecture, and clearly understand the key points of the class through the key marks, which will help students learn and play Maximum efficacy of digital teaching.

Although the present utility model has been disclosed above in terms of implementation, it is not intended to limit the present utility model. Any person skilled in the art may make various equivalent changes or substitutions without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be defined by the scope of the claims of the present application.

Claims (10)

1. An interactive projection system, characterized in that it comprises: a processing device for outputting an original image signal; A projection device, electrically coupled to the processing device to receive the original image signal, the projection device includes: an encoding module, used for encoding an encoding pattern into the original image signal; A projection module, electrically coupled to the coding module, through which the coding module projects the original image signal containing the coding pattern to a screen, so as to present an original image containing the coding pattern on the screen; at least one wireless receiving module electrically coupled to the coding module; and a sound processing module, electrically coupled to the wireless receiving module; and Pencil device, including: a microphone for converting a sound into an electrical signal; At least one wireless transmission module is used to wirelessly transmit the electrical signal to the wireless receiving module of the projection device, so that the sound processing module of the projection device receives the electrical signal from the wireless receiving module and processes the electrical signal to generate an audio signal; and A sensor is used to detect an environmental condition, so that the pen type device outputs a control signal to close the wireless transmission module according to the environmental condition. 2. The interactive projection system according to claim 1, wherein the sensor is a light sensor, and the light sensor detects the original image containing the coding pattern and wirelessly transmits it to the coding module through the wireless transmission module, so as to The encoding module outputs a coordinate control signal, thereby enabling the processing device to output an image signal including a coordinate mark according to the coordinate control signal. 3. The interactive projection system according to claim 2, wherein the projection device further comprises: A sound amplification module, receiving the sound signal and processing the sound signal to emit the processed sound; and A digital-to-analog conversion module is electrically coupled to the wireless receiving module. The digital-to-analog conversion module is used for digital-to-analog conversion of the electrical signal and output to the sound processing module. the 4. The interactive projection system according to claim 3, wherein the projection device further comprises: A sound signal amplifier is electrically coupled to the sound processing module to amplify the sound signal and output it to the sound amplification module. 5. The interactive projection system according to claim 3, wherein the projection device further comprises a sound controller, wherein the digital-to-analog conversion module also outputs the digital-to-analog converted electrical signal to the sound controller, The sound controller converts the electrical signal into a data packet and outputs it to the processing device. 6. The interactive projection system according to claim 5, wherein the processing device further comprises: A recording module is used to record the sound according to the data packet. 7. The interactive projection system according to claim 1, wherein the pen-shaped device further comprises: an electrical signal amplifier, electrically coupled to the microphone and amplifying the electrical signal; and An analog-to-digital converter is electrically coupled to the electrical signal amplifier. The analog-to-digital converter performs analog-to-digital conversion on the electrical signal and wirelessly transmits the electrical signal to the wireless receiving module through the wireless transmission module. 8 . The interactive projection system according to claim 1 , wherein the processing device further comprises a video recording module, and the video recording module records the image signal including the coordinate mark. 9. The interactive projection system according to claim 1, wherein the wireless transmission module comprises: A coordinate wireless transmission module, the original image containing the coding pattern is wirelessly transmitted to the coding module through the coordinate wireless transmission module; and a sound wireless transmission module for wirelessly transmitting the electrical signal to the wireless receiving module; Wherein when the sensor does not detect the original image containing the coding pattern, the pen-type device turns off the coordinate wireless transmission module. 10. The interactive projection system according to claim 1, wherein the encoding module encodes a coordinate system into the original image signal to generate an encoded image signal; The projection module projects the coded image signal to a screen to present a coded image; The sensor detects an encoded image of a position corresponding to the pen-type device on the screen and wirelessly transmits it to the encoding module through the wireless transmission module; The encoding module also generates a coordinate control signal representing the corresponding position according to the encoded image of the corresponding position, and transmits the coordinate control signal to the processing device through the projection device; The processing device outputs an image signal including a mark of the corresponding position according to the coordinate control signal. the

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