KR102162914B1 - Collaboration method based on content data - Google Patents

Abstract

The present invention provides a collaboration method performed in a content data-based cooperation system including a first user terminal and a second user terminal interconnected through a network. Here, the collaboration method includes: creating a collaboration server in the first user terminal; The step of connecting the second user terminal to the collaboration server through a client application, and when the connection of the second user terminal is normally performed, writing data and teaching plan data from the first user terminal to the second user terminal Transmitting content data including at least one of; Periodically transmitting a plurality of point coordinates input to one of the first user terminal and the second user terminal to another one of the first user terminal and the second user terminal; And sequentially dividing and storing the plurality of point coordinates into a plurality of writing data based on a discontinuous section of the plurality of point coordinates.

Description

Content data-based collaboration method {COLLABORATION METHOD BASED ON CONTENT DATA}

The present invention relates to a content data generation technology, and more particularly, a content data generation method for generating content data based on coordinate values of points input from the outside, and a content data generation method generated by the content data generation method. It relates to a collaboration method based on structure and content data.

With the development of science and technology, classes that were taught only in words while writing with chalk on the blackboard are being transformed into smart classes by mobilizing various electronic equipment. Classes with electronic equipment can easily produce materials such as images and videos necessary for class, and they can find necessary materials through web surfing right in the middle of class, making it easier for students to understand.

In addition, by recording the class with a video camera, students can watch the class again at any time. Even if they cannot participate in the class, they can watch the recorded class video. With the development of smartphones and PDAs, there is no restriction on time and space. I was able to take classes.

Among the various learning materials, the electronic blackboard is a blackboard that can be written with an electronic pen that increases the convenience and usefulness of lectures, and is similar to the form of a larger tablet.

On the other hand, the electronic blackboard stores the writing (or written characters, figures, etc.) in the form of an image, or only the point coordinates included in the written content. In the case of saving the writing in the form of an image, not only the capacity of the writing data is relatively large, but also there is a problem that the writing is not clearly displayed due to the enlargement or reduction of the writing, and when the writing data includes only dot coordinates, text, There is a problem that it is difficult to edit figures.

Korean Patent Registration No. 1,530,476 (2015.16.19. Announcement) Electronic blackboard system using infrared sensor Korean Patent Registration No. 1,378,318 (announced on March 28, 2014) Electronic blackboard system using infrared camera Korean Patent Registration No. 0,764,312 (Announcement on October 5, 2007) Network conference system, attendance authentication method and presentation method

An object of the present invention is to provide a content data generation method for generating content data that is easy to edit and manage.

An object of the present invention is to provide a content data structure that is easy to edit and manage.

An object of the present invention is to provide a content data-based collaboration method.

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The present invention provides a collaboration method performed in a content data-based cooperation system including a first user terminal and a second user terminal interconnected through a network. Here, the collaboration method includes: creating a collaboration server in the first user terminal; The step of connecting the second user terminal to the collaboration server through a client application, and when the connection of the second user terminal is normally performed, writing data and teaching plan data from the first user terminal to the second user terminal Transmitting content data including at least one of; Periodically transmitting a plurality of point coordinates input to one of the first user terminal and the second user terminal to another one of the first user terminal and the second user terminal; And sequentially dividing and storing the plurality of point coordinates into a plurality of writing data based on a discontinuous section of the plurality of point coordinates.

In one embodiment, the transmitting of the content data includes transmitting the content data using a packet structure including header, content data, tail, and block size information, wherein the block size information is It includes a total sum of the size of the header, the size of the content, and the size of the tail, and has a fixed length.

In one embodiment, the transmitting of the content data includes granting at least one of a writing authority and a tool use authority to the second user terminal, and if the writing authority is granted, the second user Transmits point coordinates input to the terminal to the first user terminal, and when the tool use authority is granted, correction of at least one of the writing data based on the point coordinates input by the second user terminal While allowing, it is characterized in that the modification of the writing data by the first user terminal is limited.

1 is a diagram illustrating a collaboration system according to embodiments of the present invention.
2A is a diagram illustrating an example of a server included in the collaboration system of FIG. 1.
2B is a diagram illustrating an example of a user terminal included in the collaboration system of FIG. 1.
3 is a block diagram illustrating an example of a content generating apparatus according to embodiments of the present invention.
4A and 4B are diagrams illustrating an example of a screen output from the content generating device of FIG. 3.
5A is a diagram illustrating an example of content data generated by the content generating device of FIG. 3.
5B is a diagram illustrating a structure of content data used in the content generating apparatus of FIG. 3.
6A to 6F are diagrams for explaining attributes included in the content data structure of FIG. 5B.
7A and 7B are diagrams for explaining permission setting performed by the content generating device of FIG. 3.
8 is a flowchart illustrating a method of generating content data according to embodiments of the present invention.
9 is a flowchart illustrating an example of a method of generating content data of FIG. 8.
10 is a flowchart illustrating a collaboration method according to embodiments of the present invention.
11A and 11B are diagrams illustrating an example of a packet used in the collaboration method of FIG. 10.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. The same reference numerals are used for the same elements in the drawings, and duplicate descriptions for the same elements are omitted.

The collaboration system (or content data generation system, content data generation device) according to the embodiments of the present invention includes a plurality of points (eg, points sequentially pointed on a screen through an infrared camera, or separate Content data corresponding to the event object by setting an event object (e.g., a text object) based on points sequentially detected/input through an input device, and layering basic information, detailed information, and coordinate information of the event object Can be created. In addition, the collaboration system includes a host terminal (or server) and a client terminal (or user terminal) that are interconnected through a network, and points (or points corresponding to the points) detected by a terminal with writing/tool authority. Content data) can be delivered in real time to provide collaboration or presentation.

Hereinafter, a configuration for generating content data, a structure of the generated content data, and a configuration for performing collaboration will be sequentially described.

1 is a diagram illustrating a collaboration system according to embodiments of the present invention, FIG. 2A is a view showing an example of a server included in the collaboration system of FIG. 1, and FIG. 2B is a collab of FIG. 1 It is a diagram showing an example of a user terminal included in the system.

1 and 2A, the collaboration system 100 (or content data generation system) includes a server 110 (or a content data generation device, a host terminal), a display device 120, and a sensing device ( 130) and user terminals 140-1 to 140-7 (or client terminals). Meanwhile, the collaboration system 100 may include an electronic pen 10 and a screen 20.

The collaboration system 100 collects infrared points emitted from the electronic pen 10 (for example, a pen that emits invisible infrared rays) and pointed on the screen 20 (or display area, first area). Periodically sensing through the sensing device 130 (eg, an infrared camera), and generating a plurality of coordinate information for infrared points based on a preset reference coordinate system corresponding to the screen 20, and coordinate information Content data corresponding to the event object can be generated by setting continuous coordinate information continuously provided to each other as an event object, and layering basic information, detailed information, and coordinate information (or coordinate information of points) of the event object. have.

Here, the continuous coordinate information may be coordinate information generated/sensed/inputted in temporal succession in response to a sensing period (eg, 10 ms) of the collaboration system 100 (or sensing device 130). have. The basic information of the event object includes the event type (or type) of the event object, information of related data when an event occurs (for example, video/audio data progress time), and the detailed information of the event object It may include start point coordinates, end point coordinates, and size (eg, height, width), and the like. The layering of basic information, detailed information, and coordinate information stores basic information, detailed information, and coordinate information independently of each other, but may correspond to correlating the information. For example, the content data generation system 100 Basic information, detailed information and coordinate information can be stored in a tree structure.

The structure of the content data and the structure of generating the content data will be described later with reference to FIGS. 3 to 7B.

The server 110 generates presentation image data and provides it to the display device 120, and information of points from the image acquired from the sensing device 130 (for example, coordinates of points constituting written characters, figures, etc.) Information, coordinate values), and content data may be generated based on the information of the points. Here, the presentation image data is general image data used for presentation, and presentation data (e.g., data basically used/provided for presentation progress, teaching plan data) and content data created/updated in real time (e.g. For example, writing data) may be included. The server 110 is implemented as a general computing device, for example, a personal computer, a laptop computer, a notebook, a smart pad, or a smartphone.

The display device 120 may generate a presentation image based on the presentation image data and display it on the screen 20. For example, the display device 120 may be implemented as a beam projector, or a general display device (eg, an LCD display device, an OLED display device) including a display panel corresponding to the screen 20.

The sensing device 130 may acquire an infrared image by detecting infrared points emitted from the electronic pen 10 and pointed to the screen 20 (eg, points at which invisible infrared rays are pointed). In addition, the sensing device 130 may generate information (eg, coordinate values) of infrared points from the infrared image. Here, the information on the infrared points may include a coordinate value and sensed time information on a coordinate system set with respect to the screen 20.

When the display device 110 is implemented as a beam projector, the sensing device 130 may be implemented as an infrared camera. Unlike this, when the display device 110 is implemented as a display device, the sensing device 130 It can be implemented as an integrally configured touch screen.

1 and 2B, at least one of the server 110 and user terminals 140-1 to 140-7 (hereinafter referred to as the first user terminal 140-1) may be implemented as a smart pad. And a processing module 210, a display module 220, and a touch screen 230.

Since the processing module 210 and the display module 130 are substantially the same as the server 110 and the display device 120 described with reference to FIG. 2A, overlapping descriptions will not be repeated.

The touch screen 823 may detect points sequentially input through the electronic pen 10 using a capacitive touch input technology, a pressure-sensitive touch input technology, or the like, like a general touch screen.

As described with reference to FIGS. 1 to 2B, the collaboration system 100 (or the server 110, the user terminals 140-1 to 140-7) is mutually continuous among sequentially input points. Content data may be generated by setting continuous coordinate points as one event object and layering basic information, detailed information, and coordinate information of the event object. Since content data is layered and stored, management and editing of content data can be facilitated.

3 is a block diagram illustrating an example of a content generating device according to embodiments of the present invention, FIGS. 4A and 4B are diagrams illustrating an example of a screen output from the content generating device of FIG. 3, and FIG. 5A is 3 is a diagram showing an example of content data generated by the content generating device of FIG. 3, FIG. 5B is a diagram showing the structure of content data used in the content generating device of FIG. 3, and FIGS. 6A to 6F are the content of FIG. 5B. A diagram for explaining attributes included in a data structure, and FIGS. 7A and 7B are diagrams for explaining permission setting performed by the content generating apparatus of FIG. 3.

First, referring to FIG. 3, the content generating device 300 (or the server 110) includes a communication unit 310, a coordinate information acquisition unit 320, an operation unit 340, a storage unit 350, and a user management unit 360. ) And a control unit 950. Here, the content generation device 300 may be at least one of the server 110 and user terminals 140-1 to 140-7 described with reference to FIGS. 1 to 2B.

The communication unit 310 performs data communication with the display device 120 and the sensing device 130, and may transmit presentation image data or receive infrared image data. In addition, the communication unit 310 may perform data communication with another terminal (eg, a user terminal). The communication unit 310 may be implemented as a general wired or wireless communication module.

The coordinate information acquisition unit 320 may calculate information (eg, coordinate values) of infrared points included in the infrared image data received from the sensing device 130. Since the configuration of calculating the coordinate information of the infrared points included in the infrared image data is substantially the same as the configuration of calculating the coordinates of the laser pointing point of a virtual experience system using a general invisible laser, the touch input point of the touch input method Since the configuration is substantially the same as the coordinate calculation configuration, a description thereof will be omitted.

Meanwhile, although it has been described that the coordinate information obtaining unit 320 is included in the content generating apparatus 300 in FIG. 3, the coordinate information obtaining unit 320 is not limited thereto. For example, the coordinate information acquisition unit 320 may be included in the sensing device 130.

The interface providing unit 330 may provide a user interface for generating content data.

4A and 4B, the user interface may provide a menu PAL and a writing area (or a writing input window in which writing input is allowed). As shown in FIGS. 4A and 4B, the menu PAL may have a specific shape (eg, a square or a circle) and may be disposed at a specific location (eg, the top of the screen, the bottom right of the screen, etc.).

The menu PAL may include first to seventh icons M1 to M7. For example, the user selects the type of virtual pen (eg, pen, brush, etc.) through the first icon (M1), selects the type of figure to be input through the second icon (M2), and 3 An attribute (eg, color, thickness, etc.) of the virtual pen may be selected through the icon M3, and an eraser may be set through the fourth icon M4. In addition, the user switches the screen (or note) through the fifth icon (M5), selects an event object (eg, a specific character) through the sixth icon (M6), and selects the seventh icon (M6). Through this, the event object, specific area, etc. can be enlarged or reduced.

On the other hand, the user can input dots (or characters, figures, etc.) through the writing area, and in this case, the content generating device 300 is mutually continuous based on the dots (or coordinate information of the dots). Content data can be generated in units of dots (for example, one character).

Referring back to FIG. 3, the operation unit 340 sets continuous coordinate points (or continuous coordinate information) that are continuously provided from among points calculated by the coordinate information acquisition unit 320 as one event object, and the event Content data may be generated by layering basic information, detailed information, and coordinate information of an object.

In embodiments, the operation unit 340 stores the generation time information (or sensed time information) of the continuous coordinate information and the continuous coordinate information in the third level area of the content data, and stores detailed information of the event object. It stores in the second level area of the content data, and stores basic information of the event object in the first level area of the content data, and in the first to third level areas based on the identifier (or event index) of the event object. Stored information can be correlated. For example, the operation unit 340 may store content data as an XML file.

5A to 6F, as shown in the first table TABLE1, content data includes an event master EM (or basic information), an event detail ED (or , Detailed information), erase point (EP) (or deletion information), modify event (ME) (or change information), free point (FP) (or point information ) And Notes (or note information).

Here, the event master EM may have an event identifier (EventId) and basic information of an event object. The event detail ED is connected to the event identifier EventId and may have detailed information of an event object. The erase point (EP) is connected with the event identifier (EventId) on the condition that the event detail (ED) is deleted, and an eraser (for example, a free eraser used to erase at least part of the event object, When deleting through the fourth icon M4 shown in FIG. 4A, coordinate information may be provided. Modify event (ME) is connected to the event identifier (EventId) on the condition of modifying the event detail (ED), and change information on the event object (for example, at least some points are modified, enlarged/ Reduction, etc.) (or change event information). The free point FP is connected to the event identifier EventId, and may have coordinate information on the pen writing (or points). Notes may have the file name and information of the teaching plan (or presentation data).

Meanwhile, the event master EM, as shown in the second table TABLE2, is the event type information KD indicating the event type, the image index information SD indicating the image index (or image identifier), and the event. Playback time information (MP) of the media linked to the object, event index information (EI) indicating the event index (or event identifier), enlargement ratio information (SC) indicating the enlargement ratio used when expanding/reducing the note, notes The vertical scroll position information VS indicating the vertical scroll position of the note, horizontal scroll position information HS indicating the horizontal scroll position of the note, and the multi-input index information TI for the multi-input may be included. The information (KD to TI) may have a value in the form of an integer or a real number.

The event detail ED, as shown in the third table TABLE3, includes event index information EI, start point coordinate information of the event object (SX, SY), end point coordinate information of the event object (EX, EY), Area information of event object (OX, OY, OW, OH), area information of event object moved/changed when moving/changing event object (BX, BY, BW, BH), color information of event object (PC), event Object thickness information (PW) (or pen thickness information), event deletion information (BD) indicating whether the event object has been deleted, transparency information (TP) indicating the transparency of the event object, and indicating whether or not modification has occurred on the event object It may include correction occurrence information (MD). In addition, the event detail ED may include tablet input information indicating the presence or absence of a tablet input as an input method of points. The information EI to BT included in the event detail ED may have an integer value. Meanwhile, the event master EM and the event detail ED may be associated through event index information EI.

The erase point EP includes event index information EI, event creation time information MP indicating the creation time of an event object, and deletion event type information EK, as shown in the fourth table TABLE4. can do. The information EI to EK included in the erase point EP may have integer or real values.

Free point (FP), as shown in the fifth table (TABLE5), event index information (EI), event generation time information (MP), mouse (that is, as a type of input device, mouse) by the mouse It may include an event identification value MS, a pressure value PS of a tablet pen (ie, a tablet pen as a type of input device), and start point information SX and SY of an event object. The information EI to SY included in the free point FP may have integer or real values.

Modify event ME, as shown in the sixth table TABLE6, event index information EI, media playback time information MP, event type information KD, and modified event type information MK , Information on the start point of the moved/changed event object (MX, MY), information on the end point of the moved/changed event object (CX, CY), area information of the moved/changed event object (BX, BY, BW, BH), image index information (SD) and rotation angle information (AG) of the event object may be included. The information EI to AG included in the modifier event ME may have integer or real values.

The operation unit 340 (or the content generating device 300) stores the writing data (ie, content data corresponding to characters, figures, etc. consisting of dots) in the form of a structure shown in FIGS. 5A to 6F, but in the writing data. It is possible to facilitate management of writing data by optimizing and storing the event information and the event occurrence time point, etc. as well as the coordinate information for the movement/enlargement/reduction/rotation/deletion.

The content data shown in FIG. 5A represents writing data for numbers 1 to 10 written for about 10 seconds (for example, writing data in the form of an XML file), and the storage capacity can be reduced compared to a general vector data structure. It can (for example, 251KB in the case of the conventional case -> 25KB in the case of the present invention).

In an embodiment, when two or more event objects generated within a specific time overlap each other, the operation unit 340 may integrate the two or more event objects into one event object.

Referring to FIG. 4B, for example, the number "4" may be separated and stored into a first event object OBJ1 in the form of "b" and a second event object OBJ2 in the form of "1". In this case, the operation unit 340 is based on the event area information (OX, OY, OW, OH) of each of the first event object (OBJ1) and the second event object (OBJ2), the first event object (OBJ1) and the second It is determined whether the event object OBJ2 is at least partially overlapped, and if they are overlapped with each other, the reproduction time information MP of the event master EM of each of the first event object OBJ1 and the second event object OBJ2 It is determined whether the first event object OBJ1 and the second event object OBJ2 are created within a specific time interval based on the like, and if they are created within a specific time interval, the first event object OBJ1 and the second event object ( OBJ2) may be integrated to create the third event object OBJ3, or the first event object OBJ1 may be modified.

For example, since event event objects included in the character “c” may also be determined to overlap each other based on the area information, the character “c” may be stored and managed as one event object. Similarly, the character "ㅁ" may be stored and managed as one event object.

In an embodiment, the operation unit 340 may select an event object based on event area information (OX, OY, OW, OH).

Referring to FIG. 4B, for example, when a user sets a circular selection area to select the letter "d", a part of the letter "d" may not be included or a part of the letter "e" may be included. Accordingly, the operation unit 340 includes whether the event area coordinate values (OX, OY) (for example, the center point of the event area) are included in the selection area among the event area information (OX, OY, OW, OH). , You can select only the event object that contains the event area coordinate values (OX, OY). Therefore, only "d" that meets the user's intention can be selected.

Referring back to FIG. 3, the storage unit 350 stores presentation data (eg, teaching plan data), content data (eg, writing data), and creates and collates content data (or, You can store software, programs, etc. necessary for presentation). For example, the content data generation method performed by the operation unit 340 may be implemented as a content generation program and stored in the storage unit 350. The storage unit 350 may be implemented as a memory device or the like. The content creation program, etc. may be stored in a recording medium (for example, a memory device, a CD, etc.) that can be read by a separate computer and distributed through a wired or wireless communication network.

The user management unit 360 may authenticate a user based on user information about a user participating in the collaboration (or presentation) and set collaboration rights to the user. Here, the collaboration authority may include a writing authority and a tool use authority. Meanwhile, user information may be stored in the storage unit 350.

In embodiments, the user management unit 360 provides writing rights and tool use rights to the first user terminal 140-1 (or the first user using the first user terminal 140-1) among the user terminals. At least one of can be given.

For example, when writing authority is granted to the first user terminal 140-1, point coordinates (or writing data) input from the first user terminal 140-1 are transmitted to the server 110 , Transmitted/distributed to other user terminals (eg, the second user terminal 140-2) through the server 110, and the server 110 (or the first user terminal 140-1) Content data may be generated based on point coordinates.

For example, when a tool use authority is granted to the first user terminal 140-1, the first user terminal 140-1 uses the menu PAL described with reference to FIG. 4A to provide presentation data (or Content data) can be edited.

On the other hand, the interface providing unit 330 may provide a user interface that displays the setting and status of collaboration rights of the user terminals 140-1 to 140-7.

7A and 7B, the interface providing unit 330 provides a permission setting window AR1 on one side of the screen (for example, on the right), and a server and a first user in the authorization setting window A1. The authorization status such as (User) is displayed, and the user (or server user, administrator) can set or cancel (or withdraw) the authorization for the user by using an input method such as click. . The permission setting window AR1 may be displayed in the form of showing/hiding through the first icon IC1.

In addition, the interface providing unit 330 determines whether the writing authority and the tool use authority are granted to the corresponding user through the screen displayed to the user through the second and third icons IC2 and IC3 of the menu PAL. Each can be displayed.

Referring back to FIG. 3, the control unit 370 controls the data flow between the communication unit 310, the coordinate information acquisition unit 320, the operation unit 340, the storage unit 350, and the user management unit 360, respectively. Control the operation of

As described with reference to FIGS. 3 to 7B, the content creation device 300 (or the collaboration system 100) converts writing data (that is, content data corresponding to characters, figures, etc. composed of dots) into a structure form. However, it is possible to facilitate the management of writing data by optimizing and storing event information and event occurrence time points such as movement/enlargement/reduction/rotation/deletion, as well as coordinate information for writing data.

In addition, the content creation device 300 (or the collaboration system 100) prevents modification and deletion of content data by any user by setting at least one of writing rights and tool use rights for each user. , It can make a smooth presentation possible.

8 is a flow chart illustrating a method of generating content data according to embodiments of the present invention, and FIG. 9 is a flowchart illustrating an example of a method of generating content data of FIG. 8.

Referring to FIG. 8, the method for generating content data of FIG. 8 includes the collaboration system 100 of FIG. 1 or the content generation device 300 of FIG. 3 (or the server 110, user terminals 140-1 to 140-7)).

In the method of FIG. 8, when a laser is emitted from the electronic pen 10 on the screen 20 (S810), a laser point pointed on the screen 20 may be sensed through the infrared camera 130 (S820). . For example, in the method of FIG. 8, infrared points emitted from the electronic pen 10 and pointed on the screen 20 (or the first area) may be periodically sensed through the infrared camera 130.

The method of FIG. 8 may generate point coordinates of a laser point (S830). For example, the method of FIG. 8 may generate coordinate information for infrared points based on a reference coordinate system set in correspondence with the screen 20.

Thereafter, the method of FIG. 8 checks whether the infrared point selects pre-generated content data (or writing data, for example, second content data) (S840), and selects pre-generated content data If not, content data (for example, first content data) corresponding to the event object is generated based on continuous coordinate information (S850), and when pre-generated content data is selected, based on coordinate information Thus, the event object or content data may be modified (S860).

In one embodiment, the method of FIG. 8 sets continuous coordinate information continuously provided to each other among coordinate information as one event object (for example, a first event object), and basic information, detailed information, and coordinates of the event object. Content data corresponding to the event object can be generated by layering the information.

Referring to FIG. 9, the method of FIG. 8 (or the method of FIG. 8) records sequentially received point information (eg, point coordinates) in real time (S910), and determines whether the point is an end point. It can be done (S920). For example, when a next point is not received within a specific time based on a specific point, the method of FIG. 8 may determine the specific point as an end point.

When the corresponding point is an end point, the method of FIG. 8 sets points (or continuous coordinate points) recorded from a specific point (for example, a start point) to an end point as a single event object, and sets the free point (FP) of the content data. Can be stored (S930). For example, the method of FIG. 8 includes generation time information (or reproduction time information (MP) and coordinate information (for example, starting point coordinate information (SX, SY)) of continuous coordinate information, and in the case of a point, starting point coordinates Information only) can be stored in the third level area of the content data.

The method of FIG. 8 may generate and store detailed information of an event object (S940). For example, the method of FIG. 8 may generate information included in the event detail ED of an event object based on continuous coordinate information and store it in a second level area of the content data.

Thereafter, the method of FIG. 8 may generate and store the event master EM as basic information of the event object (S950). For example, the method of FIG. 8 may store basic information of an event object in a first level area of content data.

As described with reference to FIGS. 8 and 9, the content data generation method according to embodiments of the present invention generates mutually continuous continuous coordinate points among sequentially detected points as one event object. Basic information, detailed information, and coordinate information can be layered and stored.

10 is a flowchart illustrating a collaboration method according to embodiments of the present invention.

Referring to FIG. 10, the method of FIG. 10 may be performed in the collaboration system 100 of FIG. 1. The host terminal 1010 and the client terminal 1020 shown in FIG. 10 are the server 110 and the first user terminal (or user terminals 140-1 to 140-7) described with reference to FIGS. 1 to 2B. At least one of) may be substantially the same. Therefore, overlapping descriptions will not be repeated.

The method of FIG. 10 may generate content data based on coordinate information on a 2D plane sequentially provided from the outside.

First, the method of FIG. 10 creates a server (for example, a presentation server that subjectively generates/processes/stores presentation data, etc.) in the host terminal 1010 (S1010), and the server of the client terminal 1020 Connection may be attempted or allowed (S1020). Here, the client access may be provided through a separate client application.

For example, a first user who hosts a presentation creates a server using the server creation function provided by the application, and a second user who participates in the presentation attempts to connect to a client using the connection function provided by the application. have. For example, a second user can try to connect to a client through an IP and password, and the IP corresponds to the server's address, and the password (PW) is for users who are not allowed. It may be a password set on the server to restrict

The password (PW) is transmitted to the server corresponding to the IP input through the client terminal 1020 (S1025), and the method of FIG. 10 determines whether the password (PW) matches a preset password ( S1030), it is possible to allow the user to access the server.

When the client terminal 1020 is normally connected to the server, the method of FIG. 10 may set a client level (S1040). Here, the client level indicates the authority level of the corresponding user in the presentation, and the writing authority and the tool use authority described with reference to FIGS. 3, 7A and 7B may be granted according to the authority level. That is, the client level is a system for setting restrictions on some functions related to collaboration (or presentation) among the functions provided by the collaboration system 100 such as writing authority, tool use authority, etc. Can be

For example, the 0th level (Lv0) may correspond to a case where there is no authority to participate in a collaboration function, that is, a collaboration (or presentation). The first level Lv1 corresponds to a case in which there is no writing authority, and for example, a user of the first level Lv1 can only observe the presentation. The second level Lv2 corresponds to a case in which writing authority is granted, and for example, a writing input by a user of the first level Lv1 may be directly or indirectly distributed to the server and other client terminals. The third level (Lv3) corresponds to the case of having all rights such as creation and execution of the server.For example, the third level (Lv3) is granted only to the host terminal 1010 and can have writing authority. have.

On the other hand, the second level (Lv2) is given through the host terminal 1010, which is the third level (Lv3), and is given only to one of the plurality of client terminals, and the remaining client terminals are at the first level (Lv1). Can have In this case, only the host terminal 1010 and one client terminal have the right to write, and the two-way writing, the host terminal 1010, and the writing generated in each of only one client terminal can be simultaneously distributed in real time. For example, one client terminal may use a drawing attribute different from the drawing attribute (pen, brush pen, figure) set in the host terminal 1010, and may independently have attributes such as thickness and color.

Meanwhile, the tool use authority may be obtained by the host terminal 1010 or one client terminal (ie, a second level (Lv2) client terminal). For example, it is possible to hand over or bring back the tool usage right to the client terminal of the second level (Lv2) of the host terminal 1010, and the host terminal 1010 or the client of the second level (Lv2) according to the tool usage permission. The terminal may modify the event object (eg, delete, move, rotate, enlarge, reduce) and change notes (eg, change a screen that becomes a background of a presentation).

Referring back to FIG. 10, the method of FIG. 10 may provide presentation data (eg, at least one of teaching plan data and writing data) to the client terminal 1020 together with access approval of the client terminal 1020. (S1050).

The method of FIG. 10 may display presentation data (eg, teaching plan data and writing data) through the client terminal 1020 (S1060).

Thereafter, in the method of FIG. 10, when there is data (eg, point coordinate information) generated/provided from the host 1010 or another client terminal having writing authority, the corresponding data is periodically sent to the client terminal 1020. Alternatively, the data may be transmitted in real time (S1070), and the corresponding data may be displayed in real time through the client terminal 1020 (S1080).

Meanwhile, the method of FIG. 10 divides the data into a plurality of event objects based on a discontinuous section of data (eg, point coordinate information) provided to the host terminal 1010, and corresponds to each of the event objects. Content data (or writing data) can be sequentially generated and stored. Here, the discontinuous section is a concept opposite to the continuation described with reference to FIG. 1, for example, the time when the coordinate information is not acquired beyond the sensing period (10 ms) of the collaboration system 100 (or section ) May correspond. That is, the method of FIG. 10 may sequentially generate content data by setting consecutive points among points as one event object. Since the method of generating the content data is substantially the same as the method of FIG. 8 and the method of FIG. 9, overlapping descriptions will not be repeated.

11A and 11B are diagrams illustrating an example of a packet used in the collaboration method of FIG. 10.

Referring to FIGS. 11A and 11B, the method of FIG. 10 may transmit content data or the like using a packet (or packet structure) illustrated in FIGS. 11A and 11B.

The packet may include header, content data, tail, and block size information. The block size information includes the total sum of the size of the header, the size of the content, and the size of the tail, and may have a fixed length. The header may be composed of characters indicating the type (or type) of the protocol, and the tail may be composed of characters indicating the end of the protocol.

Referring to FIG. 11B, for example, the header may include DOC_ST indicating text transmission, DOC_EN indicating the end of text transmission, and the like. Since the types of protocols included in the header are described in FIG. 11B, detailed descriptions thereof will be omitted.

The present invention can be applied to a handwriting recognition device, a collaboration system, and the like.

As described above, although it has been described with reference to the embodiments of the present invention, those of ordinary skill in the relevant technical field variously modify the present invention within the scope not departing from the spirit and scope of the present invention described in the following claims. It will be understood that it can be modified and changed.

100: collaboration system
110: server
120: display device
130: sensing device
140-1 to 140-7: user terminals
210: processing module
220: display module
230: touch screen
300: content creation device
310: Ministry of Communications
320: coordinate information acquisition unit
330: interface providing unit
340: operation unit
350: storage
360: user management unit
370: control unit
1010: host terminal
1020: client terminal

Claims (3)

In a collaboration method performed in a cooperative system based on content data including a first user terminal and a second user terminal interconnected through a network,
Creating a collaboration server in the first user terminal;
Connecting, by the second user terminal, to the collaboration server through a client application;
Transmitting content data including at least one of writing data and teaching plan data from the first user terminal to the second user terminal when the connection of the second user terminal is normally performed;
Periodically transmitting a plurality of point coordinates input to one of the first user terminal and the second user terminal to another one of the first user terminal and the second user terminal; And
Including, among the plurality of point coordinates, sequentially dividing the plurality of point coordinates into a plurality of writing data and storing them in a storage unit based on a discontinuous section that is not mutually continuous in time.
Setting continuous coordinate points provided continuously among the plurality of point coordinates as one event object;
The basic information including the event type of the set event object, the detailed information including the start point coordinates, the end point coordinates and size of the event object, and the coordinate information of the point coordinates are layered to generate content data to be displayed in an XML file Storing in a storage unit independently of each other; And
In the case where two or more event objects generated within a specified time overlap each other, integrating the two or more event objects into one event object; further comprising,
The integrating step,
Based on the event area information (OX, OY, OW, OH) of each of the first event object (OBJ1) and the second event object (OBJ2), the first event object (OBJ1) and the second event object (OBJ2) are Determine whether they overlap at least partially,
When overlapping each other, the first event object OBJ1 and the first event object OBJ1 and the first event object OBJ1 and the first event object OBJ1 and the second event object OBJ1 and the second event object OBJ2 2 Determines whether the event object (OBJ2) has been created within a specified time interval,
When created within a specified time interval, the first event object (OBJ1) and the second event object (OBJ2) are integrated to create a third event object (OBJ3) or a curl that modifies the first event object (OBJ1). Lab method.
The method of claim 1, wherein the transmitting of the content data comprises:
Transmitting the content data using a packet structure including header, content data, tail, and block size information,
The block size information includes a total sum of the size of the header, the size of the content, and the size of the tail, and has a fixed length.
The method of claim 1, wherein the transmitting of the content data comprises:
And granting at least one of a writing authority and a tool use authority to the second user terminal,
When the writing authority is granted, the point coordinates input to the second user terminal are transmitted to the first user terminal,
When the tool use authority is granted, modification of at least one of the writing data is allowed based on point coordinates input by the second user terminal, but the writing data by the first user terminal Collaboration method, characterized in that to limit the correction.

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