KR20180131817A - Method, system and Apparatus For Sharing Writing Information - Google Patents

Abstract

A writing sharing apparatus according to an embodiment of the present invention includes a writing member for writing on a blackboard, a housing including the writing member, a communication unit for receiving a position signal outputted from a signal transmitter installed on the blackboard, a sensing unit, a processor for generating writing information including position information based on the position signal and motion information based on a sensing result from the sensing unit, and a memory including commands executed by the processor for generating the writing information. The writing information is transmitted to an external terminal to be displayed on the external terminal. Accordingly, the present invention can accurately receive writing contents on the blackboard even if a character is not read well on the blackboard.

Description

[0001] The present invention relates to a handwriting sharing apparatus, a system including the handwriting sharing apparatus, and a handwriting sharing method,

The present invention relates to a handwriting sharing device, a system including the handwriting sharing device, and a handwriting sharing method. More particularly, the present invention relates to a device and a system for recognizing motion of a handwriting sharing device on a blackboard and automatically writing handwriting on a terminal.

Some areas of the board are not well visible due to the reflection of light. The problem is that it is difficult to clearly understand handwriting information depending on the distance from the board or the size of the text on the board is small. , There may be difficulties in clearly identifying the handwriting information on the blackboard due to various reasons during the lecture time.

In Korean Patent Laid-Open Publication No. 10-2011-0012217, when a steel plate is written on a screen area projected by a projector using a stylus, the stylus is recognized by a piezoelectric sensor formed on the stylus, the position is read, , A learner recognizes a handwriting recognition system using an electronic pen capable of freely changing the font of the recognized handwriting content. However, in the related art, the entire area of the chalkboard is inconsistent with the projected area of the projector The area where the handwriting can be automatically recognized is restricted to the projection area of the projector, and the light output from the projector interferes with the field of view of the lecturer.

Korean Patent Laid-Open Publication No. 10-2007-0060580 discloses a technique for performing character input and recognition by analyzing a user's three-dimensional motion using an acceleration sensor. However, There is a problem that motion is detected in each of the other apparatuses when the apparatus is gripped by using only one apparatus among the plurality of apparatuses.

KR 10-2011-0012217 A1 KR 10-2007-0060580 A1 KR 10-2015-0021187 A1

Embodiments of the present invention provide a handwriting sharing device, a system including the handwriting sharing device, and a handwriting sharing method that can receive handwritten content written on a blackboard accurately even when characters of the blackboard are not visually recognized according to an internal and / or external environment There is purpose in.

It is another object of the present invention to provide a handwriting sharing device, a system including the handwriting sharing device, and a handwriting sharing method that enable automatic handwriting sharing to be concentrated on lectures.

Another object of the present invention is to provide a handwriting sharing device, a system including the handwriting sharing device, and a handwriting sharing method that can be easily installed and used on an existing blackboard and accurately share the handwriting content written on the blackboard.

It is another object of the present invention to provide a handwriting sharing device, a system including the handwriting sharing device, and a handwriting sharing method for allowing a handwriting writer to confirm his / her handwriting content.

It is another object of the present invention to provide a handwriting sharing device capable of correctly distinguishing a chalk holder used for handwriting when a handwritten author holds a plurality of chalk holders, a system including the handwriting sharing device, and a handwriting sharing method.

A handwriting sharing device according to an embodiment includes a writing member for writing on a board; A housing including the writing member; A communication unit for receiving a position signal outputted from a signal transmitter installed on the board; Sensing unit; A processor for generating handwriting information including motion information based on the sensing result from the sensing unit and position information based on the position signal; And a memory including instructions executed by the processor for generating the handwritten information, wherein the handwritten information is transmitted to an external terminal and displayed on the external terminal.

In another aspect, the communication unit may provide a handwriting sharing device for receiving a position signal from each of the first to fourth signal transmitters provided in the corner areas of the blackboard.

In another aspect, the sensing unit includes a pressure sensor, and the processor transmits the handwriting information to the external terminal when the pressure is not detected from the pressure sensor for a preset time or the position is fixed for a preset time Or to provide a handwritten sharing device that interrupts what is being done.

According to another aspect of the present invention, the processor transmits to the external terminal any one of a plurality of area position signals, which are matched for each area of the blackboard, based on the position signal, A different page may be displayed according to the user's request.

According to another aspect of the present invention, the processor transmits any one of a plurality of area position signals, which are matched for each area of the blackboard, to the projector based on the position signal, It is possible to provide a handwriting sharing device for changing the area.

The handwriting sharing method according to an embodiment of the present invention includes receiving a position signal from a signal transmitter installed on a board; Detecting motion data from a sensing unit; Determining whether the motion is based on at least one of the position signal and the motion data; Determining whether a pressure applied to the writing member for a predetermined time is detected if it is determined that there is movement; Generating handwriting information including position information and motion information of the user based on the position signal and the motion data when a pressure is detected during the predetermined time; And transmitting the handwritten information to the terminal such that the handwritten information is displayed and / or stored in the terminal.

According to another aspect of the present invention, there is provided an apparatus for transmitting a position signal to a mobile terminal, the apparatus comprising: And a step of displaying the handwriting-sharing information.

The embodiment of the present invention can accurately receive handwritten contents written on the blackboard even in the case where the characters of the blackboard are not well visible depending on the internal and / or external environment.

In addition, the embodiment of the present invention enables automatic writing sharing so that it can focus on lectures.

In addition, it is not necessary to change the existing blackboard to a digital blackboard, the device disclosed in the present invention can be conveniently installed on the existing blackboard, and the written contents written on the blackboard can be accurately shared.

Further, the handwriting writer can feed back the handwriting content of the handwriting without being disturbed by the output light from the projector.

In addition, even if the handwriters have a plurality of chalk holders, the chalk holders used for handwriting can be accurately distinguished.

1 is a diagram illustrating an example of a handwriting sharing system according to an embodiment of the present invention.
2 is a block diagram of a handwriting sharing system.
Figure 3 is an exemplary diagram of a handwriting sharing system in another aspect.
4 is an example of a method of generating location information of a handwriting sharing device based on a position signal.
5 is an exemplary diagram of a handwriting sharing method.
6 is an exemplary diagram of a handwriting sharing method according to another embodiment.
FIG. 7 is a diagram illustrating an example in which a new page is created or a previously created page is displayed according to an area where the handwriting sharing device is located among various areas of a blackboard.
8 is a conceptual diagram for explaining a method of changing the irradiation direction of the projector according to the position of the handwriting sharing device.
9 is a conceptual diagram of a method for sharing handwritten information when handwriting is performed using any one of the handwritten sharing devices while holding a plurality of handwriting sharing devices.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention and methods of achieving them will be apparent with reference to the embodiments described in detail below with reference to the drawings. However, the present invention is not limited to the embodiments described below, but may be implemented in various forms. In the following embodiments, the terms first, second, and the like are used for the purpose of distinguishing one element from another element, not the limitative meaning. Also, the singular expressions include plural expressions unless the context clearly dictates otherwise. Also, the terms include, including, etc. mean that there is a feature, or element, recited in the specification and does not preclude the possibility that one or more other features or components may be added. Also, in the drawings, for convenience of explanation, the components may be exaggerated or reduced in size. For example, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of explanation, and thus the present invention is not necessarily limited to those shown in the drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like or corresponding components throughout the drawings, and a duplicate description thereof will be omitted .

1 is a diagram illustrating an example of a handwriting sharing system according to an embodiment of the present invention, and FIG. 2 is a block diagram of a handwriting sharing system.

1 and 2, the handwriting sharing apparatus 100 according to the embodiment of the present invention may include a writing member 180 and a housing 190 for accommodating the writing member 180.

The housing 190 includes a communication unit 110 for receiving a position signal output from the signal transmitter 300 installed on the blackboard 1, a sensing unit 140, and a handwriting sharing device 100 based on the sensing result of the sensing unit 140 A processor 120 for generating handwritten information including motion information of the handwriting shared device 100 based on the motion information of the handwriting shared device 100 based on the position signal and position information of the handwritten sharing device 100 based on the position signal and a memory 130 including instructions executed by the processor 120 for generating handwritten information ).

The handwriting information generated by the processor 120 may be transmitted to the terminal 500 and displayed and / or handwritten content may be stored on the display device of the terminal 500. [

The processor 120 may also include one or more microprocessors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), discrete logic circuits, Firmware, or any combination thereof. ≪ / RTI >

On the other hand, the memory 130 includes instructions (e.g., executable instructions) such as computer readable instructions or processor readable instructions. The instructions may include one or more instructions executable by a computer, such as by each of one or more processors 120. [

For example, the one or more instructions may cause the one or more processors 120 to generate motion information of the handwriting sharing device 100 using the sensing result of the sensing unit 140, Generating one or more processors 120 to perform operations including generating position information of the handwriting shared device 100, generating handwriting information using motion information and position information, generating an area position signal, and transmitting the generated signal, Lt; / RTI >

The signal transmitter 300 may be, for example, a device for periodically transmitting a beacon signal to the handwriting sharing device 100, but the present invention is not limited thereto.

When the beacon signal, which is a position signal transmitted by the signal transmitter 300, is received through the communication unit 110, the processor 120 can generate the position information of the handwriting sharing device 100 based on the transmission signal size, have.

The terminal 500 may be a computer, a smart phone, a mobile phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation device, a tablet PC ), An ultrabook, a wearable device, and a glass-type terminal (smart glass).

In addition, the communication unit 110 may be configured to communicate with a plurality of communication systems, such as a communication system (e.g., Global System for Mobile communication (GSM), Code Division Multi Access (CDMA), High Speed Downlink Packet Access (HSDPA) At least one of a base station, an external terminal 500, and a projector 700 on a mobile communication network constructed according to a high speed uplink packet access (LTE), a long term evolution (LTE) The wireless signal can be transmitted and received.

The communication unit 120 may be a wireless LAN (WLAN), a wireless fidelity (Wi-Fi), a wireless fidelity (WiFi), a digital living network (DLNA), a wireless broadband (WiBro) for Microwave Access), or the like.

Also, the communication unit 110 can transmit and receive radio signals using a short-range wireless communication system. For example, the communication unit 110 may be a Bluetooth (registered trademark), a radio frequency identification (RFID), an infrared data association (IrDA), an ultra wideband (UWB), a ZigBee, (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technology.

In addition, the sensing unit 140 may include a pressure sensor, an acceleration sensor, and a gyroscope sensor. The sensing unit 140 may further include at least one of a magnetic sensor, a G-sensor, and a motion sensor in order to increase accuracy of motion information. The sensing unit 140 may be a proximity sensor, an illumination sensor, a touch sensor, an RGB sensor, an infrared sensor, a finger scan sensor, An ultrasonic sensor, an optical sensor, a microphone, a battery gauge, an environmental sensor (for example, a barometer, a hygrometer, a thermometer, a radiation sensor, Etc.), chemical sensors (e.g., electronic nose, healthcare sensor, biometric sensor, etc.).

The processor 120 may generate motion information of the handwriting sharing device 100 using the sensing result of the sensing unit 140 including the acceleration sensor 141 and the gyroscope sensor 142. [ The processor 120 includes a sensing unit installed in the housing 190 and having a pressure sensor 143 for sensing a pressure applied to the writing member 180 in response to a pressure applied to the blackboard 1 140 to generate the handwritten information and / or to transmit the generated handwritten information to the terminal 500. [0064]

The projector 700 may be any one of a liquid crystal display (LCD) system, a liquid crystal on silicon (LCOS) system, and a digital light processing (DLP) system, Any device capable of irradiating an image including the handwriting information received from the handwriting sharing device 100 and capable of changing the irradiation area of the image based on the area position signal received from the handwriting sharing device 100 is possible.

Figure 3 is an exemplary diagram of a handwriting sharing system in another aspect. And FIG. 4 is an example of a method of generating position information of a handwriting sharing device based on a position signal.

Referring to FIGS. 1 to 4, the signal transmitter 300 may include first to fourth signal transmitters 310, 320, 330, and 340.

Each of the first to fourth signal transmitters 310, 320, 330, and 340 may be installed at four different corners of the board 1. Each of the first to fourth signal transmitters 310, 320, 330, and 340 may transmit a position signal to the handwriting sharing device 100.

The processor 120 may generate position information based on position signals from the first to fourth signal transmitters 310, 320, 330, and 340 received from the communication unit 110. [

More specifically, the processor 120 calculates the math between the current handwriting sharing device 100 and the signal transmitter 300 based on the position signals from the first to fourth signal transmitters 310, 320, 330, The coordinates on the y-axis of the handwriting sharing device 100 are calculated using the distances D1, D2, D3 and D4 satisfying the formula 1 and the distances D5 and D6 satisfying the expression (2) The location information of the handwriting sharing device 100 may be generated according to the calculated distance, but the method of generating the location information of the handwriting sharing device 100 is not limited thereto.

[Equation 1]

R1 is the width of the blackboard 1 (length on the x-axis), and R2 is the height of the blackboard 1 (length on the y-axis).

&Quot; (2) "

5 is an exemplary diagram of a handwriting sharing method.

1 to 5, memory 130 of handwriting sharing device 100 includes instructions that are executable by processor 120 to cause processor 120 to perform operations, (S110) of receiving a position signal from the signal transmitter 300, receiving a sensing value of the sensing unit 140 (S120), comparing the first sensing value of the current sensing unit 140 and the first sensing value of the current sensing unit 140 (S130). If there is a difference between the first and second sensing values, it is determined whether a pressure sensing signal is detected from the pressure sensor 143 of the sensing unit 140 for a predetermined time (S140). When a pressure sensing signal is detected during the preset time, the controller generates handwriting information including position information and motion information based on the position signal and the current sensing value (S150) 500), as shown in FIG.

More specifically, in step S110 of receiving a position signal from the signal transmitter 300, the communication unit 110 may receive a position signal from each of the first to fourth signal transmitters 310, 320, 330, and 340 have. The processor 120 may utilize the position signal output from the signal emitter 300 to generate position information of the handwriting shared device 100 based on, for example, the transmitted signal magnitude and the strength of the position signal.

In step S120 of receiving the sensing value of the sensing unit 140, the processor 120 may obtain motion data sensed by the sensing unit 140. [ For example, the processor 120 may obtain the sensing values of the acceleration sensor 141 and the gyroscope sensor 142 of the sensing unit 140. It is possible to detect the moving direction and the moving speed of the housing 190 in the local area while writing on the blackboard 1 by using the sensing values of the acceleration sensor 141 and the gyroscope sensor 142, 100 may be generated.

The processor 120 compares the first sensing value of the current sensing unit 140 with the second sensing value of the previous sensing unit 140 at step S130, And the motion information of the handwriting sharing device 100 according to the second sensing value are different from each other. If the handwriting sharing device 100 is moving, the comparison result of the motion information is different. If there is no motion, the motion information is the same.

In addition, if the handwriting author grasps the handwriting sharing device 100 but is not writing for writing, it is necessary to prevent the writing information according to the motion of the handwriting sharing device 100 from being generated. Therefore, the processor 12 may determine whether a pressure sensing signal is detected from the pressure sensor 143 of the sensing unit 140 during a preset period of time (S140).

When the pressure sensing signal is detected during the preset time, the handwriting sharing device 100 generates handwriting information including position information and motion information based on the position signal and the current sensing value, and transmits the generated handwriting information to the terminal (S150, S160) It is possible to transmit the handwriting information generated by generating the handwriting information including the position information and the position information and the motion information based on the current sensing value to the terminal 500. [ The terminal 500 can display the handwriting content based on the received handwriting information. Specifically. The terminal 500 may designate a position of a character to be written on the displayed page using the position information, and display the recognized character at the position according to the motion information.

6 is an exemplary diagram of a handwriting sharing method according to another embodiment.

1 to 4 and 6, memory 130 of handwriting sharing device 100 includes instructions that allow processor 120 to be executed by processor 120 to perform operations The operations include receiving the position signal from the signal transmitter 300 (S210), generating position information of the handwriting shared device 100 from the position signal (S220), comparing the current position information with the previous position information A step S240 of determining whether a pressure sensing signal is detected from the pressure sensor 143 of the sensing unit 140 for a preset time after a difference between the current position information and the previous position information is detected, A step S250 of generating handwritten information including positional information and motion information based on the current position signal and the sensed value when the pressure sensing signal is detected, and transmitting the generated handwritten information to the terminal 500 (S260) include Can.

More specifically, the position information is received from the signal transmitter 300 (S210), position information of the handwriting shared device 100 is generated from the position signal (S220), and the current position information and the previous position information are compared It is possible to determine whether there is movement of the handwriting sharing device 100 in step S230. If there is movement of the handwriting sharing device 100, the comparison result of the position information is different, and if there is no movement, the position information is the same.

Further, it is necessary to prevent a phenomenon in which handwritten information due to the movement of the handwriting sharing device 100 is generated if the handwritten author grasps the handwriting sharing device 100 or does not handwriting. Accordingly, the processor 120 may determine whether a pressure sensing signal is detected from the pressure sensor 143 of the sensing unit 140 during a preset time (S240).

When the motion of the handwritten sharing device 100 is detected and it is determined that handwriting has occurred during the preset time, the handwriting information including the motion information based on the sensing value and the generated position information is generated (S250) (500). The terminal 500 can display the handwriting content based on the received handwriting information.

FIG. 7 is a diagram illustrating an example in which a new page is created or a previously created page is displayed according to an area where the handwriting sharing device is located among various areas of a blackboard.

In another aspect, the processor 120 generates an area position signal including information on an area where the handwriting sharing device 100 is located among a plurality of areas of the predetermined blackboard 1 based on the position signal, 500).

For example, the memory 110 stores coordinate information for a plurality of areas on the chalkboard 1, and the processor determines whether or not the handwriting sharing device 100 is located on the chalkboard 1 based on the coordinate information for the plurality of stored areas. It is possible to generate an area position signal indicating where the area of the plurality of areas is located and transmit the area position signal to the terminal 500. [

The terminal 500 can change the page displayed when receiving the area position signal, and the handwriting information can be automatically recorded on the changed page.

This is because there is a limit in displaying all the handwriting contents created in the entire area of the large blackboard 1 on one display screen of the terminal 500. Accordingly, a new page is created in the terminal 500 for each of a plurality of areas, Can be recorded. Also, in the case where the handwriting author moves the position of the handwriting sharing device 100 to the previous area and writes in the margin of the corresponding area, the terminal 500 automatically records the handwritten content while displaying the page corresponding to the previous area Images can be displayed, and the automatically recorded handwriting contents can be stored.

8 is a conceptual diagram for explaining a method of changing the irradiation direction of the projector according to the position of the handwriting sharing device.

In another aspect, the processor 120 may transmit the handwriting information and the area position signal to the projector 700. [ Then, the projector 700 can automatically change the image irradiation direction based on the area position signal.

For example, when a handwritten author is located on the left side of the blackboard 1 and writes on the blackboard 1, the projector 700 displays the image on the opposite side of the handwriting writer (for example, on a board board installed on the right side of the blackboard) When the handwritten writer is located on the right side of the blackboard 1 and writes on the blackboard 1, the projector 700 can irradiate the image to the opposite side of the handwriting writer (e.g., the left side of the blackboard) . Therefore, the handwriting author can directly check the handwriting information to be displayed automatically on the terminal 500 from the image of the projector 700, thereby improving the accuracy of the handwriting. Also, according to the position of the handwriting writer, It is possible to prevent the light outputted from the projector 700 from interfering with the writing writer because the irradiation area is changed.

9 is a conceptual diagram of a method of sharing handwritten information when handwriting is performed using any one of the handwritten sharing devices while gripping a plurality of handwriting sharing devices.

In another aspect, the handwritten author can write on the blackboard 1 using any one of the first and second handwritten sharing devices 101 and 102 while grasping the first and second handwritten sharing devices 101 and 102.

For example, in the case of holding the first and second handwriting sharing devices 101 and 102 and writing on the blackboard 1 using the second handwriting sharing device 102, The processor senses both the pressure applied to the second handwriting sharing device 102 and the movement change, so that the handwriting information generated from the second handwriting sharing device 102 is transmitted to the terminal 500, The processor of the terminal 101 does not have the handwriting information transmitted from the first handwritten sharing device 101 to the terminal 500 because the movement of the first handwriting sharing device 101 is detected but the pressure is not detected. Accordingly, the terminal 500 can be displayed on the handwriting content according to the handwriting information generated from the second handwriting sharing device 102.

Further, when the handwritting writer makes a handwriting using the second handwriting sharing device 102 and then changes to the first handwriting sharing device 101, a predetermined time (a preset time for determining whether a pressure sensing signal is detected from the pressure sensor) The handwriting information from each of the first and second handwriting sharing devices 101 and 102 may be simultaneously transmitted to the terminal 500. [ In this case, when the handwritten information is simultaneously received from the first handwritten sharing device 101 while receiving the handwritten information from the second handwritten sharing device 102, the terminal 500 transmits the handwritten information received from the first handwritten sharing device 101 Only information may be displayed.

The embodiments of the present invention described above can be implemented in the form of program instructions that can be executed through various computer components and recorded in a computer-readable recording medium. The computer-readable recording medium may include program commands, data files, data structures, and the like, alone or in combination. The program instructions recorded on the computer-readable recording medium may be those specifically designed and configured for the present invention or may be those known and used by those skilled in the computer software arts. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CD-ROM and DVD, magneto-optical media such as floptical disks, medium, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code, such as those generated by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware device may be modified into one or more software modules for performing the processing according to the present invention, and vice versa.

The specific acts described in the present invention are, by way of example, not intended to limit the scope of the invention in any way. For brevity of description, descriptions of conventional electronic configurations, control systems, software, and other functional aspects of such systems may be omitted. Also, the connections or connecting members of the lines between the components shown in the figures are illustrative of functional connections and / or physical or circuit connections, which may be replaced or additionally provided by a variety of functional connections, physical Connection, or circuit connections. Also, unless explicitly mentioned, such as " essential ", " importantly ", etc., it may not be a necessary component for application of the present invention.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

The blackboard 1, the handwriting sharing device 100,
The first handwriting sharing device 101, the second handwriting sharing device 102,
A communication unit 110, a processor 120, a memory 130,
A sensing unit 140, an acceleration sensor 141, a gyroscope sensor 142,
The pressure sensor 143, the writing member 180,
The housing 190, the signal transmitter 300,
The first signal transmitter 310, the second signal transmitter 320,
The third signal transmitter 330, the fourth signal transmitter 340,
The terminal 500, the project 700,

Claims (7)

A writing member for writing on the blackboard;
A housing including the writing member;
A communication unit for receiving a position signal outputted from a signal transmitter installed on the board;
Sensing unit;
A processor for generating handwriting information including motion information based on the sensing result from the sensing unit and position information based on the position signal; And
And a memory including instructions executed by the processor for generating the handwriting information,
The handwritten information is transmitted to an external terminal and displayed on the external terminal
Handwritten sharing device. The method according to claim 1,
Wherein the communication unit receives a position signal from each of the first to fourth signal transmitters provided in the corner areas of the blackboard
Handwritten sharing device. The method according to claim 1,
The sensing unit includes:
A pressure sensor,
The processor stops transmitting the handwriting information to the external terminal when the pressure is not detected from the pressure sensor for a preset time or the position is fixed for a preset time
Handwritten sharing device. The method according to claim 1,
Wherein the processor transmits to the external terminal any one of a plurality of area position signals which are matched for each area of the blackboard based on the position signal, To be displayed
Handwritten sharing device. The method according to claim 1,
Wherein the processor transmits to the projector any one of a plurality of area position signals which are matched for each area of the blackboard based on the position signal to change the irradiation area of the image including the handwriting information of the projector
Handwritten sharing device. Receiving a position signal from a signal emitter installed on a board;
Detecting motion data from a sensing unit;
Determining whether the motion is based on at least one of the position signal and the motion data;
Determining whether a pressure applied to the writing member for a predetermined time is detected if it is determined that there is movement;
Generating handwriting information including position information and motion information of the user based on the position signal and the motion data when a pressure is detected during the predetermined time; And
And transmitting the handwritten information to the terminal such that the handwritten information is displayed and / or stored in the terminal
How to share your handwriting. The method according to claim 6,
Transmitting, to the terminal, any one of a plurality of area position signals matched to the area of the blackboard based on the position signal, and displaying the different pages according to the received area position signal; Further comprising
How to share your handwriting.

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