KR20210124930A - Control method of lecture providing system including keypad apparatus linked with mounted student terminal - Google Patents

Abstract

Provided is a method for controlling a lecture providing system comprising a server, an electronic device, a display device, and a keypad device. The controlling method comprises: a step of transmitting, by the electronic device, a problem and answer information to the problem to the server; a step of receiving, by the display device, information on the problem from the server and displaying the same; a step of conducting, by the keypad device, obtaining based on a user command and transmitting the same to the server; a step of obtaining, by the server, a plurality of correct answer information obtained from the keypad device and other keypad devices; and a step of displaying, by the display device (400), the plurality of correct answer information. According to the present invention, a lecturer can grasp grades of students.

Description

Control method of lecture providing system including keypad device interlocked with mounted student terminal { CONTROL METHOD OF LECTURE PROVIDING SYSTEM INCLUDING KEYPAD APPARATUS LINKED WITH MOUNTED STUDENT TERMINAL }

The present invention relates to a control method of a lecture providing system including a keypad device that interworks with a mounted student terminal to receive correct answer information.

In elementary school, middle school, high school, or university classes, the reality is that one teacher (or professor) is teaching many students. Therefore, it is almost impossible to conduct a lecture in consideration of the achievement and understanding of a large number of students.

On the other hand, the representative method for evaluating students' achievement is the test. However, since the test is conducted only a small number of times for a specific period, there is a disadvantage in that it is impossible to immediately grasp the level of the students, and accordingly, the need for a method to evaluate the level of the students during a real-time lecture is increasing.

Furthermore, even if students have questions while attending a lecture, they may not be able to freely ask questions while observing other students. Accordingly, there is also a need to establish a system in which students can freely ask questions during lectures.

Laid-Open Patent Publication No. 10-2019-0124672, 2019.11.05

An object of the present invention is to provide a method for controlling a lecture providing system using a keypad device.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

In a method for controlling a lecture providing system including a server, an electronic device, a display device, and a keypad device according to an aspect of the present invention for solving the above-described problem, the electronic device provides a problem and answer information to the problem sending to a server; receiving, by the display device, information on the problem from the server and displaying the information; acquiring, by the keypad device, based on a user command and transmitting it to the server; obtaining, by the server, a plurality of correct answers information obtained from the keypad device and other keypad devices; and displaying, by the display device 400, the plurality of correct answers. includes

In this case, the control method may include, by the electronic device, receiving and displaying, by the electronic device, correct answer information of the keypad device transmitted to the server; receiving, by the server, a user command obtained from the keypad device for a preset first time after the display device receives and displays the information on the problem; and resetting, by the server, the acquired user command when a preset second time longer than the preset first time has elapsed. Including, the step of displaying the plurality of correct answer information, when the server receives the user command obtained from the keypad device after the first preset time has elapsed, the answer input by the keypad device displaying in different colors; may include.

In this case, the obtaining of the plurality of correct answer information includes: obtaining a user command input last when a plurality of user commands are received from the keypad device for the preset first time; and obtaining the last inputted user command as correct answer information inputted by the keypad device. may include.

In this case, the control method includes the steps of: receiving, by the keypad device, an identification number of a student corresponding to the keypad device and transmitting it to the server; receiving, by the server, the identification number of the student from the keypad device; matching, by the server, the received identification number, the serial number of the keypad device, and the time information at which the identification number is received and storing the information; ?? determining, by the server, whether a student corresponding to the identification number is present based on the stored data; may include.

In this case, the control method may include: determining, by the cradle device attached to the keypad device, whether the keypad device is detachable; when the keypad device is detached from the cradle device, transmitting information about the detachment to the server; and when the keypad device is attached to the cradle device, outputting a message guiding input of a student identification number for checking attendance; may include.

In this case, the control method includes, when the server receives a user command corresponding to the question from the keypad device, controlling the display device to display an icon corresponding to the question on one side of the display device ; transmitting, by the server, information on the keypad device that has transmitted the most recent problem information, commentary information, and user command corresponding to the question from the point in time when a user command corresponding to the question is input, to the electronic device; may include.

In this case, the step of displaying the plurality of correct answer information includes: displaying a correct answer icon for displaying only the correct answer among a plurality of students; displaying a correct answer input icon for entering a correct answer when the correct answer to the problem is not stored in the server; displaying a question start icon for generating an oral question; displaying an anonymous icon for displaying student information anonymously; displaying an icon for notifying a power shortage of the keypad device; displaying a group icon for grouping a plurality of students; displaying a random icon for selecting a random student from among a plurality of students; displaying a class end icon for obtaining a class end status; The method may further include; displaying a logout icon for performing logout.

In this case, the keypad device includes a keypad input unit for receiving a user command and a housing unit for receiving a student terminal, wherein the student terminal includes a wireless power transmission unit for wireless power transmission, a Bluetooth communication unit for low-power Bluetooth communication, and the and a short-range wireless communication performing unit for communicating with a keypad device, wherein the receiving unit includes a wireless power receiving unit for receiving power from the student terminal and a short-range wireless communication performing unit for communicating with the student terminal, the control method comprising: , performing, by the keypad device, wireless charging when the student terminal is mounted on the receiving unit; when the student terminal is accommodated in the keypad device, activating the attendance application of the student terminal through a short-range wireless communication performing unit of the keypad device; transmitting, by the student terminal, a BLE signal to a plurality of student terminals accommodated in the electronic device and other keypad devices at preset time intervals when the attendance application is activated; The student terminal, when the attendance application is activated, receives a BLE signal from a plurality of student terminals stored in the electronic device and other keypad devices at preset time intervals, and transmits the received BLE signal to the server to do; obtaining, by the server, location information of the student terminal based on the BLE signal received from the student terminal; and comparing, by the server, the location information of the student terminal and the location information of the keypad device, to obtain whether a student is present corresponding to the student terminal; Including, the control method, when the student terminal is accommodated in the keypad device, the steps of matching the identifier of the student terminal and the identifier of the keypad device and transmitting to the server; When the server does not receive a user command from the keypad device for the preset first time and the preset second time, it acquires information about the last time it received the BLE signal from the student terminal corresponding to the keypad device to do; transmitting, by the server, information on the keypad device to the electronic device when the last time information is equal to or greater than a preset third time from the current time; may include.

Other specific details of the invention are included in the detailed description and drawings.

According to various embodiments of the present invention described above, the lecturer can grasp the level of the students in real time, and the students can notify the lecturer that there is a question in real time.

In addition, according to various embodiments of the present invention, there is an effect of checking whether the students are present or not as to whether the students are absent during the lecture without special attention to the lecturer.

Effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a block diagram of a system according to an embodiment of the present invention.
2A to 2C are exemplary views for explaining a keypad device according to an embodiment of the present invention.
3 is an exemplary view for explaining a keypad device according to another embodiment of the present invention.
4 is an exemplary view for explaining a receiving unit according to an embodiment of the present invention.
5 is an exemplary view for explaining a keypad device including a cradle according to an embodiment of the present invention.
6 to 12 are flowcharts for explaining various embodiments according to an embodiment of the present invention.
13A to 13C are exemplary views for explaining an operation of a display device according to an embodiment of the present invention.
14A to 14G are exemplary diagrams for explaining an operation of an electronic device according to an embodiment of the present invention.
15 is an exemplary diagram for explaining a BLE communication method between student terminals according to an embodiment of the present invention.
16 is a block diagram of an apparatus according to an embodiment of the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and those of ordinary skill in the art to which the present invention pertains. It is provided to fully understand the scope of the present invention to those skilled in the art, and the present invention is only defined by the scope of the claims.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. As used herein, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprises” and/or “comprising” does not exclude the presence or addition of one or more other components in addition to the stated components. Like reference numerals refer to like elements throughout, and "and/or" includes each and every combination of one or more of the recited elements. Although "first", "second", etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from another. Accordingly, it goes without saying that the first component mentioned below may be the second component within the spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used herein will have the meaning commonly understood by those of ordinary skill in the art to which this invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless specifically defined explicitly.

As used herein, the term “unit” or “module” refers to a hardware component such as software, FPGA, or ASIC, and “unit” or “module” performs certain roles. However, “part” or “module” is not meant to be limited to software or hardware. A “unit” or “module” may be configured to reside on an addressable storage medium or to reproduce one or more processors. Thus, by way of example, “part” or “module” refers to components such as software components, object-oriented software components, class components and task components, processes, functions, properties, Includes procedures, subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays and variables. Components and functionality provided within “parts” or “modules” may be combined into a smaller number of components and “parts” or “modules” or as additional components and “parts” or “modules”. can be further separated.

Spatially relative terms "below", "beneath", "lower", "above", "upper", etc. It can be used to easily describe the correlation between a component and other components. A spatially relative term should be understood as a term that includes different directions of components during use or operation in addition to the directions shown in the drawings. For example, when a component shown in the drawing is turned over, a component described as “beneath” or “beneath” of another component may be placed “above” of the other component. can Accordingly, the exemplary term “below” may include both directions below and above. Components may also be oriented in other orientations, and thus spatially relative terms may be interpreted according to orientation.

In this specification, a computer means all types of hardware devices including at least one processor, and may be understood as encompassing software configurations operating in the corresponding hardware device according to embodiments. For example, a computer may be understood to include, but is not limited to, smart phones, tablet PCs, desktops, notebooks, and user clients and applications running on each device.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Each step described in this specification is described as being performed by a computer, but the subject of each step is not limited thereto, and at least a portion of each step may be performed in different devices according to embodiments.

1 is a block diagram of a system according to an embodiment of the present invention.

1 , the lecture providing system according to the present invention may include a server 100 , a keypad device 200 , an electronic device 300 , and a display device 400 .

The server 100 analyzes data received from the keypad device 200 and the electronic device 300 to transmit a control signal to at least one of the keypad device 200 , the electronic device 300 , and the display device 400 . configuration for transmission.

The server 100 may include a database for storing at least one of problem information, correct answer information for the problem, and statistical information about students who have solved the problem.

The keypad device 200 is configured to receive user commands from students taking lectures. In this case, the user command may be a command for inputting a correct answer to a problem provided by the electronic device 300 .

The electronic device 300 may be a device for providing a problem to the server 100 . The electronic device 300 may also provide an explanation of the problem provided to the server 100 . However, according to various embodiments of the present disclosure, it goes without saying that the server 100 may directly obtain an explanation for the problem provided by the electronic device 300 .

The electronic device 300 according to the present invention may be implemented as a smart phone, but this is only an embodiment, and a smart phone, a tablet personal computer (PC), a mobile phone, a video phone, e-book reader, desktop PC, laptop PC, netbook computer, workstation, server, PDA (personal digital assistant), PMP (portable multimedia) player) or a wearable device.

The display device 400 is configured to display information provided from the server 100 or the electronic device 300 .

Meanwhile, it goes without saying that the electronic device 300 and the display device 400 according to the present invention may be implemented as one device. That is, it goes without saying that the operation of the electronic device 300 or the operation of the display device 400 described later in the present invention may be all performed in the electronic device 300 or may all be performed in the display device 400 .

Meanwhile, according to various embodiments of the present disclosure, the lecture providing system may further include a BLE scanner. In this case, the BLE scanner may receive a control signal from the keypad device 200 and transmit it to the server 100 .

2A to 2C are exemplary views for explaining a keypad device according to an embodiment of the present invention.

As shown in FIG. 2A , the keypad device 200 may be configured to include 0 to 9, *, #, and input buttons. In another embodiment of the present invention, the keypad device 200 may be configured to include only 1 to 5 and input buttons. Of course, the keypad device 200 according to various embodiments of the present invention may include only buttons 1 to 5.

Meanwhile, as shown in FIG. 3 , the keypad device 200 may include a keypad input unit 210 and a receiving unit 220 . The keypad input unit 210 may be configured as shown in FIGS. 2A and 2B described above.

At this time, as shown in FIG. 3 , the keypad input unit 210 and the receiving unit 220 may be electrically connected to transmit/receive power or transmit/receive communication signals. According to an exemplary embodiment, the keypad input unit 210 and the receiving unit 220 may be connected by wire, but the present invention is not limited thereto and may be connected wirelessly.

The keypad input unit 210 may include an input button, and the input button may be configured as a mechanical button, but is not limited thereto. In one embodiment, the input button may be configured as a touch pad.

* Meanwhile, as shown in FIG. 4 , the storage unit 220 is configured to store the student terminal. When the student terminal is accommodated, the storage unit 220 may detect that the student terminal is accommodated. In this case, the receiving unit 220 may include a wireless power receiving unit for receiving power from the student terminal and a short-range wireless communication performing unit for communicating with the student terminal.

The wireless power receiver is configured to receive power from the student terminal. According to an embodiment, the keypad device 200 may be configured to turn on only when power is supplied from the student terminal, and to be turned off when the power supply from the student terminal is stopped.

The short-range wireless communication performing unit is configured to communicate with the student terminal. In one embodiment, the short-range wireless communication performing unit may perform communication with the student terminal using the NFC communication method using the NFC chip, but is not limited thereto, and a Wi-Fi chip, a Bluetooth chip, a wireless communication chip, and a low-power Bluetooth needle. Including various communication chips such as (BLE chip), it is possible to perform communication using a LAN method, a WiFi method, a Bluetooth method, and an NFC method, respectively. In the case of using a Wi-Fi chip or a Bluetooth chip, various types of connection information such as an SSID and a session key are first transmitted and received, and then various types of information can be transmitted and received after communication connection using the same. The wireless communication chip refers to a chip that performs communication according to various communication standards such as IEEE, ZigBee, 3rd Generation (3G), 3rd Generation Partnership Project (3GPP), and Long Term Evolution (LTE).

The receiving unit 220 may include an NFC tag. When the student terminal and the NFC tag of the receiving unit 220 come into contact, the student terminal may activate an application corresponding to the NFC tag. As will be described later, the activated application may be an application for transmitting a BLE communication signal to the electronic device 300 and other student terminals.

According to one embodiment, the application may operate in the foreground (fore-ground), of course, it may also operate in the background (back-ground). In this case, the foreground state may mean a state in which the user can directly manipulate the application, and the background state may refer to a state in which the application operates but the user cannot operate the application.

In an embodiment, an application activated in the student terminal may operate in the background, but may not operate in the foreground. Specifically, when the student terminal is accommodated in the storage unit 220 , the application operates only in the background, and when the student terminal is not stored in the storage unit 220 , the application may operate in the foreground or background.

According to an embodiment, whether the student terminal is accommodated in the storage unit 220 may be determined using the NFC tag of the storage unit 220 . Specifically, when an application is activated through an NFC tag, the student terminal controls the application to operate only in the background, and when the application is activated through a student's manual input, the student terminal controls the application to operate in the foreground or background can do.

As described above, by controlling the activation mode of the application according to whether or not it is accommodated in the storage unit, there is an advantage of more accurately performing an attendance check using BLE communication, as will be described later.

Meanwhile, as shown in FIG. 2C , the keypad device 200 may include buttons 1 to 5, a ? button, and an OX button. According to an embodiment, buttons 1 to 5 may be used when the problem provided by the teacher is a multiple choice problem. According to another embodiment, the OX button may be used when the problem provided by the teacher is a problem of determining true/false. According to another embodiment, the ? button may be used to receive a question or a request for help from a student during a lecture. When a user command is input through the ? button of the keypad device 200, the electronic device 300 or the display device 400 receives a message indicating that a question has been received or information about the interrogator (ie, the user command through the ? button). The input information of the keypad device 200 may be displayed, and the teacher may provide answers to the questions to the students by confirming that the questions have been received.

Meanwhile, according to various embodiments of the present disclosure, the keypad device 200 may be implemented to be detachably attached to a cradle attached to a student desk. Specifically, as shown in FIG. 5 , the keypad device 200 may be detachably attached to the cradle. In this case, at least one of the keypad device 200 and the cradle may include a sensor for detecting whether it is detached from the cradle. According to an embodiment, the sensor may be implemented as a pressure sensor, an illuminance sensor, or the like, but is not limited thereto.

When the keypad device 200 and the cradle are coupled or detached, the keypad device 200 may transmit whether to attach or detach it to the server 100 . The server 100 may match and store information on whether or not attachment and detachment is received with information on time at which the attachment and detachment information is received. The server 100 may manage the loss of the keypad device 200 based on the stored data.

Meanwhile, according to various embodiments of the present disclosure, of course, the keypad device 200 may include a touch pad. In this case, the keypad device 200 may receive handwriting data from students. That is, the keypad device 200 may include a touchpad to receive correct answers to not only multiple-choice questions but also multiple-choice questions. In this case, the server 100 receives the handwriting image from the keypad device 200 , performs OCR reading based on the handwriting image to obtain text data, and compares the obtained text data with the correct answer to the short-form question Of course, it is possible to obtain the correct/incorrect answer of the answer entered by the student by performing the following steps.

Hereinafter, various embodiments of the present invention will be described with reference to FIGS. 6 to 12 .

In step S110 , the electronic device 300 may transmit a problem and answer information to the problem to the server 100 .

According to an embodiment, the electronic device 100 may transmit a photographed image of photographing a problem to the server 100, and the server 100 may analyze the received photographed image to obtain information about the problem and answer to the problem. have. To this end, the server 100 may store an image file for the textbook used by the teacher. The server 100 may acquire a plurality of image files including the same content as the captured image received from the electronic device 200 .

For example, the server 100 may store a plurality of image files for the textbook A. In this case, the plurality of image files may be image files including text data. The server 100 may obtain text data by performing OCR analysis on the captured image received from the electronic device 200 . The server 100 may obtain a first image file including text data obtained from a photographed image from among a plurality of image files. In this case, when the text data of the first image file and the text data obtained from the photographed image are equal to or greater than a preset ratio, the server 100 may determine that the first image file and the photographed image are data for the same problem.

In this case, the preset ratio may be obtained based on at least one of the number of problems included in the first image file and the amount of text data included in each problem. For example, when four problems are included in the first image file, the preset ratio may be a ratio corresponding to 25%. Specifically, the preset ratio in the above-described case may be determined to be lower than the ratio of 25% (eg, 22%) in consideration of a case in which an error occurs during OCR reading. As another example, when one problem is included in the first image file, the preset ratio may be determined to be lower than the ratio of 100% (for example, 90%) in consideration of a case where an error occurs during OCR reading. .

In step S120 , the display apparatus 400 may receive information about the problem from the server 100 and display it.

Specifically, as shown in FIG. 13A , the display apparatus 400 may display information about the problem in the first area 410 . Furthermore, the display apparatus 400 may display the remaining time for inputting the correct answer to the problem in the second area 420 .

In this case, the remaining time may be appropriately adjusted according to the level of the class (eg, class 1) taking the lecture. Specifically, the server 100 may determine the remaining time based on the average solving time of students who have solved the corresponding problem in the past. Alternatively, the server 100 is based on the average solving time of students who solved the problem in the past, the education level information generated based on the correct rate and incorrect answer rate of the students who solved the problem in the past, and the past various problem solving of the first class students. It can be obtained based on the level of education obtained.

For example, the average solving time of students who solved the problem in the past was 1 minute, and the level of education generated based on the percentage of correct and incorrect answers of the students who solved the problem in the past was the same as solving the various past problems of students in grades B and 1 If the level of education obtained based on the background is C grade, the remaining time may be set to less than 1 minute (for example, 40 seconds). In other words, since the education level of class 1 students (grade B) is higher than that of students who have solved the problem in the past (grade C), less time can be devoted to solving the problem.

According to various embodiments of the present invention, the remaining time is not the education level of the students who solved the problem in the past, but the education level of the students who solved all the problems (that is, the educational level of all students using the lecture system according to the present invention) Of course, it can be obtained on the basis of the average level of education obtained on the basis of all questions). Specifically, when it is difficult to secure data because the number of users of the lecture system according to the present invention is less than a preset number, the remaining data is based on the education level of students who have solved all problems, not the education level of students who have solved the problem in the past. When the time is determined and data is sufficiently secured for more than a preset number of users of the lecture system according to the present invention, the remaining time is based on the education level generated based on the correct rate and incorrect answer rate of students who have solved the problem in the past. can be decided.

In step S130 , the keypad device 200 may obtain and transmit the user command to the server 100 .

In step S140 , the server 100 may acquire a plurality of correct answer information obtained from the keypad device 200 and other keypad devices 200 .

In step S150 , the display device 400 may display a plurality of correct answers.

Specifically, as shown in FIG. 13B , the display device 400 may display the correct answer, incorrect answer, average difficulty level, and the difficulty level of a class (eg, class 1) in the second area 430 . . At this time, the average difficulty is obtained based on the correct rate and incorrect answer rate of all students who have solved the corresponding problem in the past, and the difficulty level of 1 class can be obtained based on the correct rate and incorrect answer rate of the students of the class who solved the current problem. Therefore, students taking classes can find out the average learning level of their class through problem solving. Meanwhile, as shown in FIG. 13C , it goes without saying that the display apparatus 400 may provide an explanation for a problem in the second area 440 .

Furthermore, according to various embodiments of the present disclosure, the display device 400 includes a correct answer icon for displaying only the correct answer among a plurality of students, a correct answer input icon for entering the correct answer when the correct answer to the problem is not stored in the server, and verbal A question start icon for creating a question, an anonymous icon for displaying student information anonymously, an icon for notifying the power shortage of the keypad device, a group icon for grouping a plurality of students, a random student among a plurality of students is selected At least one icon among a random icon for performing the task, a class end icon for obtaining a class end status, and a logout icon for performing logout may be further displayed. A specific method of displaying the icon will be described later with reference to FIG. 14B .

Meanwhile, in step S210 , the electronic device 300 may receive and display the correct answer information of the keypad device transmitted to the server 100 .

Meanwhile, according to various embodiments of the present disclosure, the electronic device 300 may display various information based on information received from the keypad device 200 or the server 100 .

As an embodiment, as shown in FIG. 14A , the electronic device 300 may log in to the server 100 when a class starts. When a preset ID and password are input and transmitted to the server 100 , the server 100 displays a control signal for displaying at least one of school information, class information, and teaching information corresponding to the ID on the electronic device 300 . to the electronic device 300 , and the electronic device 300 may display a screen corresponding to the received control information.

When the login is completed, as shown in FIG. 14B , information about the class may be displayed on the electronic device 300 . In this case, when a user command through icons 1401 to 1420 shown in FIG. 14B is input, the electronic device 300 may perform a function corresponding to each command.

Specifically, when the correct answer icon 1401 is selected, only information about the correct student among the student information may be displayed. In the same way, when all icons 1402 are selected, the electronic device 300 may display correct information, incorrect answer information, or non-answer information of all students. The student information below the correct answer icon 1401 and the all icon 1402 shown in FIG. 14B indicates information on all students. In this case, the electronic device 300 may display the correct answer, incorrect answer, and non-answer in the form of icons. Specifically, a correct answer may indicate a first icon 1403 , a second icon 1404 may indicate an incorrect answer, and a third icon 1405 may indicate a non-answer (a student who has not entered an answer).

As another embodiment, the correct answer input icon 1406 may be an icon for inputting the correct answer to the problem provided by the teacher to the students. That is, if the problem provided by the teacher is a problem without correct answer information (eg, oral questions, problems not stored in the server 100), the teacher enters the correct answer to the problem through the correct answer input icon 1406 can do.

When the correct answer input icon 1406 is selected, a UI corresponding to the keypad device 200 may be displayed as shown in FIG. 14F . When a command is input through one of the upper icon, the middle icon, and the lower icon indicating the correct answer and the difficulty level of the problem through the UI corresponding to the keypad device 200, the electronic device 300 is shown in FIGS. 14B to 14D. As shown, information on the correct answer/incorrect answer/non-answer can be displayed in various ways.

The question start (end) icon 1407 can be used when the teacher manually starts or ends a question. When a user command is input through the question start (end) icon 1407 in the question end state (that is, the state in which the input of the keypad device 200 is not received), the server 100 provides correct answer information from the keypad device 200 can receive Alternatively, when a user command through the question start (end) icon 1407 is input in the question start state (that is, the state that receives the input of the keypad device 200), the server 100 responds to the question and the correct answer / In order to display incorrect answers / non-answers, the electronic device 300 may be controlled, or the question start (end) icon 1407 in the question start state (ie, the state in which the input of the keypad device 200 is received). ) is input and correct answer information for the problem is not stored in the database of the server 100 , the server 100 may wait for the correct answer input through the correct answer input icon 1406 .

The anonymous icon 1408 is configured to display information about a student as a name or to switch to an anonymous screen. When a user command is input through the anonymous icon 1409 , the electronic device 300 may display the icon in a display method suitable for the situation among the 1-1 icon 1409 or the near love icon 1411 . That is, when the anonymous icon 1409 is selected, the 1-1 icon 1409 is changed to an icon corresponding to the student's name, or the love icon 1411 is changed to an anonymous icon (in this case, the 3-1 icon), The information of can be displayed in the form of an anonymous icon including location information or an icon including the names of students. Alternatively, when a user command through the anonymous icon 1408 is input and the students' names are displayed anonymously, the electronic device 300 may display student information as shown in FIG. 14C .

Meanwhile, the electronic device 300 may distinguish students' correct/incorrect answer information based on color information. Specifically, the incorrect answer icon 1410 is displayed in a first color (eg, orange), and the correct person icon 1411 is displayed in a second color (eg, blue), so that the correct and incorrect answers are intuitively displayed. can be distinguished

On the other hand, when the power supply of the keypad device 200 is insufficient, the electronic device 300 may display an icon indicating the lack of power, such as the fourth icon 1412 .

Meanwhile, when the keypad device 200 fails to communicate with the server 100 , the electronic device 300 may display the icon in a third color (eg, gray) like the fifth icon 1413 .

Meanwhile, when an unspecified keypad device 200 exists, the electronic device 300 may display an icon different from other icons, such as the sixth icon 1414 .

Meanwhile, when a user command through the group icon 1415 is input to the electronic device 300 , the students in the class may be grouped as shown in FIG. 14C or 14D . In this case, the generated groups can be distinguished by displaying each group in a different color. Specifically, when a user command through the group icon 1415 is input, the electronic device 300 may display a UI for inputting at least one of the number of groups and the number of team members, as shown in FIG. 14E . .

In one embodiment, when the number of groups is input, the server 100 may group students based on the input number of groups. For example, when the number of students is 27 and the number of groups is 3, the server 100 may randomly create 9 groups of 3 students each. Alternatively, when the number of students is 27 and the number of groups is 4, the server 100 may randomly create 6 groups of 4 people and 1 group of 3 people.

In another embodiment, when the number of team members is input, the server 100 may group students based on the input number of team members. For example, when the number of students is 27 and the number of team members is 3, the server 100 may randomly create 9 groups of 3 people each. Alternatively, when the number of students is 27 and the number of team members is 4, the server 100 may randomly create 6 groups of 4 people and 1 group of 3 people.

In another embodiment, when the number of groups and the number of team members is input, the server 100 may group the students based on the input number of groups and the number of team members. In this case, when the product of the number of groups and the number of team members is equal to or greater than the number of students in the class, the server 100 may determine a value that is less than the input number of team members as the new number of team members. When the product of the number of groups and the number of new team members is equal to or greater than the number of students in the class, the server 100 may repeat the process of reducing the number of team members. If the product of the number of groups and the number of new team members is less than or equal to the number of students in the class, the server 100 determines whether the number of students equal to the difference between the number of students in the class and the product of the number of new team members is greater than the value corresponding to the new number of team members can be judged If the number of students equal to the difference between the value corresponding to the product of the number of groups and the number of new team members in the number of class students is greater than the value corresponding to the new number of team members, the server 100 creates a new group corresponding to the new number of team members, and the remaining You can create another group of students. The server 100 corresponds to the product of the number of groups and the number of new team members in the number of students in the class when the number of students equal to the difference between the value corresponding to the product of the number of groups and the number of new team members is smaller than the value corresponding to the number of new team members in the number of students in the class If the difference between the number of students and the number of new team members is equal to or less than the preset value, a new group may be created, and if the difference is greater than or equal to the preset value, the remaining students may be distributed to the created group.

As another example, when the product of the number of groups and the number of team members is less than or equal to the number of students in the class, the server 100 may determine a new number of team members as a value of one more than the input number of team members.

Meanwhile, when a user command through the random icon 1416 is input, the electronic device 300 may select and display a random student among students in the class. That is, as shown in FIG. 14B , an icon (yellow icon) corresponding to an arbitrary student may be selected and displayed. Through the random icon 1416, the teacher can select a random student to induce a question, etc., so that the class can be conducted smoothly and actively.

Meanwhile, the electronic device 300 may enable the teacher to end the class through the class end icon 1417 or log out through the logout icon 1408 . When a user command through the end of class icon 1417 is input, as shown at the bottom of FIG. 14A , grade/class/teaching information may be selected. That is, when a user command through the class end icon 1417 is input, there is a difference from the logout icon 1408 in that only the grade/class/teaching can be changed without logout being performed.

Meanwhile, it goes without saying that the electronic device 300 may display statistical information about students in a class based on the first statistics icon 1419 or the second statistics icon 1420 .

Meanwhile, the electronic device 300 may accumulate and display questions when a plurality of questions are asked during a class as shown in the display of “Question 2” shown in FIG. 14B . Time information for problem solving may also be displayed, as described above.

Meanwhile, as shown in FIG. 14G , the electronic device 300 may display information about a specific student. According to an embodiment, the electronic device 300 may display student information only when a consent message is received from a keypad device corresponding to a specific student. That is, the electronic device 300 may receive consent from the keypad device corresponding to the students before displaying the students' personal information.

In step S220 , the server 100 may receive the user command obtained from the keypad device 200 for a preset first time after the display device 400 receives and displays the information on the problem. In this case, the preset first time is a time corresponding to the remaining time as described above, and may mean a time required for solving a problem.

In step S230 , the server 100 may reset the acquired user command when a second preset time longer than the preset first time elapses.

That is, the server 100 does not receive the input from the keypad device 200 after the second preset time has elapsed after the problem is provided, so that accurate statistical information on problem solving can be obtained.

When the input of the keypad device 200 is received after the second preset time has elapsed, the server 100 may ignore the input.

In another embodiment, as shown in FIG. 13B , the server 100 controls the input of the keypad device 200 when correct and incorrect answers are displayed on the second area 430 of the display device 400 . When received, the server 100 may ignore the corresponding input. That is, instead of ending the input of the correct answer to the question after the second preset time has elapsed, the server 100 enters the correct answer to the question when information on the correct answer and incorrect answer is displayed in the second area 430 of the display device 400 . can be terminated.

In step S230, when the server 100 receives a user command acquired from the keypad device 200 after a first preset time has elapsed, the keypad device 200 displays the input correct answer in a different color. The device 400 may be controlled.

That is, even if the server 100 fails to input the correct answer to the problem within the time, the correct answer input within the second preset time range may be used for problem solving statistics and displayed in a different color. At this time, the display in different colors, as shown in FIG. 13b , when displaying the correct and incorrect answers in the second area 430 , such as "Correct answer: 17 people, incorrect answer: 3 people (1 person)" Instead of marking, it may be indicated as "Correct answer: 17 people (3 people), incorrect answer: 3 people (1 person)", but it may mean displaying (3 people) and (1 person) in different colors.

As another embodiment, the server 100 may transmit information on the correct answer/incorrect answer displayed in different colors to the electronic device 300 . That is, the lecturer (teacher, professor, etc.) using the electronic device 300 may acquire information necessary for the course of the lecture by receiving information about the student who has entered the correct answer over time.

Meanwhile, in step S310 , when a plurality of user commands are received from the keypad device 200 for a first preset time, two user commands inputted last may be obtained.

Specifically, in the keypad device 200 shown in FIGS. 2A and 2B , once a correct answer is input, there is no method of correcting or canceling the correct answer. Therefore, when an incorrect answer is entered, there is a need for a method to correct it.

Accordingly, the server 100 may receive a plurality of user commands from the keypad device 200 for the first preset time.

In step S320 , when two user commands are the same user command, the last received user command may be acquired as correct answer information of the keypad device 200 .

For example, the keypad device 200 may input 3, 4, 2, 1, 1, 5, and 5 user commands for the first preset time and transmit the input to the server 100 . In this case, since the last received user commands 5 and 5 are the same commands, the server 100 may acquire the received '5' as correct answer information of the keypad device 200 .

In step S330 , when the two user commands are different user commands, it may be determined whether the same user command continuously input among a plurality of user commands exists.

In step S340 , when the same user command continuously input is one among a plurality of user commands, the same user command may be acquired as correct answer information of the keypad device 200 .

For example, the keypad device 200 may transmit 3, 4, 2, 1, 1, 5 user commands to the server 100 for a preset first time period. In this case, the server 100 may determine that the same user commands (1, 1) continuously input exist. In this case, the server 100 may acquire the received '1' as correct answer information of the keypad device 200 .

In step S350 , when there are two or more consecutively inputted same user commands among a plurality of user commands, the same last inputted user command may be acquired as correct answer information of the keypad device 200 .

For example, the keypad device 200 may input 3, 4, 4, 2, 1, 1, 5 user commands to the server 100 for a preset first time period. In this case, the server 100 may determine that the same user command continuously input is (4,4) and (1,1), and the server 100 receives '1' which is the same user command input last. It may be obtained as correct answer information of the keypad device 200 .

In step S360 , if the same user command continuously input does not exist among the plurality of user commands, the first input user command may be acquired as correct answer information of the keypad apparatus 200 .

For example, the keypad device 200 may transmit 1,2,3,4,5,4,3,2,1 user commands to the server 100 for a preset first time period. In this case, the server 100 may acquire '1', which is the initial user command, as correct answer information of the keypad device 200 .

Meanwhile, in step S410 , the keypad device 200 may perform wireless charging when the student terminal is mounted in the receiving unit.

In step S420 , when the student terminal is accommodated in the keypad device 200 , the attendance application of the student terminal may be activated through the short-range wireless communication performing unit of the keypad device 200 .

In step S430 , when the attendance application is activated, the student terminal may transmit a BLE signal to the plurality of student terminals accommodated in the electronic device 300 and other keypad devices 200 at preset time intervals.

In step S440 , when the attendance application is activated, the student terminal receives BLE signals from a plurality of student terminals stored in the electronic device 300 and other keypad devices 200 at preset time intervals, and the received BLE A signal may be transmitted to the server 100 .

In step S450 , the server 100 may acquire location information of the student terminal based on the BLE signal received from the student terminal.

In step S460 , the server 100 compares the location information of the student terminal with the location information of the keypad device 200 to obtain whether a student is present corresponding to the student terminal.

Specifically, as shown in FIG. 15 , the student terminal may transmit and receive a BLE communication signal with the electronic device 300 and other student terminals.

Specifically, the electronic device 300 may transmit a BLE communication signal to a plurality of student terminals. A student terminal in which the attendance application is activated among a plurality of student terminals may receive a BLE communication signal transmitted from the electronic device 300 and transmit the BLE signal to the electronic device 300 .

The electronic device 300 transmits the BLE communication signal to the surrounding student terminals a preset number of times (for example, 10 times), and receives the BLE communication signal from the peripheral student terminal for a preset number of times (for example, 7 times), A student terminal that has transmitted the BLE communication signal a preset number of times (eg, 7 times) may be determined as a class participation terminal.

It may be assumed that the student terminals that the electronic device 300 determines to be the class participation terminals through the above process are the first student terminals 200 - 1 to the fourth student terminals 200 - 4 .

The electronic device 300 may receive a BLE communication signal from the first student terminal 200 - 1 to the fourth student terminal 200 - 4 every preset period.

* Meanwhile, the first student terminal 200 - 1 may receive a BLE signal from the electronic device 300 and the other student terminals 200 - 2 to 200 - 4 . In the same way, the second student terminal 200-2 may receive a BLE signal from the electronic device 300 and the other student terminals 200-1, 200-3, and 200-4, and the third student terminal 200 - 3 may receive a BLE signal from the electronic device 300 and the other student terminals 200 - 1 , 200 - 2 and 200 - 4 , and the fourth student terminal 200 - 4 is an electronic device A BLE signal may be received from the device 300 and the other student terminals 200-1, 200-2, and 200-3.

The electronic device 300 may acquire intensity values of the BLE communication signals received from the plurality of student terminals 200 - 1 to 200 - 4 . That is, the electronic device 300 may store intensity information of BLE signals received from a plurality of devices at preset intervals. The electronic device 300 may transmit strength information of a BLE signal received from a plurality of devices to the server 100 .

The server 100 may determine the location of the student terminal based on the BLE communication signal strength information received from the electronic device 300 . Specifically, when the intensity of the BLE communication signal received by the electronic device 300 changes by more than a preset value, the server 100 may determine that the corresponding student terminal leaves the classroom or leaves the seat.

On the other hand, in the case of checking attendance through the above-described method, if an obstacle is located between the electronic device 300 and the student terminals and the communication signal is weakened, there is a possibility of erroneously determining whether the student is present. Accordingly, the server 100 may determine whether to attend by additionally determining the strength of the BLE communication signal received by the plurality of student terminals 200-1 to 200-4 devices.

In an embodiment, when the strength of the BLE communication signal transmitted by the first electronic device 200 - 1 among the BLE communication signals received by the electronic device 300 is less than or equal to a preset value, the server 100 , the second student From among the BLE communication signals received by the terminals 200 - 2 to the fourth student terminal 200 - 4 , strength information of the BLE communication signal transmitted by the first electronic device 200 - 1 may be acquired. In this case, it goes without saying that the strength of the BLE communication signal obtained by the server 100 is the strength obtained at the same time.

The server 100 transmits the BLE communication signal transmitted by the first electronic device 200-1 among the BLE communication signals received by at least one student terminal among the second student terminal 200-2 to the fourth student terminal 200-4. When the intensity information of the BLE communication signal is less than or equal to a preset value, it may be determined that the first electronic device 200 - 1 leaves the classroom or leaves the seat.

However, the server 100 is the first electronic device 200-1 among the BLE communication signals received by at least one student terminal among the second student terminals 200-2 to the fourth student terminals 200-4. When the intensity information of the transmitted BLE communication signal exceeds a preset value, it may be determined that the first electronic device 200 - 1 has not left the classroom or the seat.

Meanwhile, in step S510 , when the student terminal is accommodated in the keypad device 200 , the keypad device 200 may match the identifier of the student terminal and the identifier of the keypad device 200 and transmit the matching to the server 100 .

In step S520 , the server 100 receives a BLE signal from the student terminal corresponding to the keypad device 200 when the server 100 does not receive a user command from the keypad device 200 for a preset first time and a preset second time. It is possible to obtain the last time information received.

In operation S530 , when the last time information is equal to or greater than a preset third time from the current time, the server 100 may transmit information on the keypad device 200 to the electronic device 300 .

That is, the server 100 can check the attendance of the student terminal using the above-described steps S410 to S460, and whether the student is present or not, but is attending, but is not participating in the class using steps S510 to S530. It may be determined if not, and may be transmitted to the electronic device 300 .

* According to various embodiments of the present disclosure, when the student terminal is separated from the receiving unit 220 , the keypad device 200 is the server 100 or the electronic device 200 and the student terminal is separated from the receiving unit 220 . Of course, it is possible to transmit a message indicating that it has been completed. Alternatively, when the student terminal leaves the accommodation unit 220 , the attendance application changes to the foreground state, and the student terminal moves to the server 100 or the electronic device 200 and the student terminal leaves the accommodation unit 220 . You can also send a message indicating that it has been done.

Meanwhile, in step S610 , when the server 100 receives a user command corresponding to the question from the keypad device 200 , the display device displays an icon corresponding to the question on one side of the display device 400 . (400) can be controlled.

In step S620, the server 100 receives the most recent problem information, commentary information, and information about the keypad device 200 that has transmitted the user command corresponding to the question from the time when the user command corresponding to the question is input. may be transmitted to the electronic device 300 .

Meanwhile, in step S710 , the keypad device 200 may receive the student identification number corresponding to the keypad device 200 and transmit it to the server 100 .

In step S720 , the server 100 may receive the student's identification number from the keypad device 200 .

In step S730, the server 100 may match and store the received identification number, the serial number of the keypad device, and the time information at which the identification number is received.

In step S740, the server 100 may determine whether the student corresponding to the identification number is present based on the stored data.

In an embodiment, the server 100 may obtain a student identification number and an identification number transmission time, and determine that the student is present at the corresponding time.

Meanwhile, according to various embodiments of the present disclosure, the server 100 may calculate various information based on data received from a plurality of teachers, a plurality of classes, and a plurality of students.

In one embodiment, when a teacher creates or discovers a new problem and registers it in the server 100 , the server 100 may share information about the new problem with other teachers. Alternatively, a plurality of teachers may register problems in advance according to grades, subjects, topics, and difficulties and share them with other teachers through the server 100 .

The server 100 may compare the correct rate for each class, the correct rate for each school, the correct rate for all students, etc. for the same question based on statistical information on a plurality of students and transmit it to the electronic device 300 or the display device 400 . .

16 is a block diagram of an apparatus according to an embodiment of the present invention.

The processor 102 may include one or more cores (not shown) and a graphic processing unit (not shown) and/or a connection path (eg, a bus, etc.) for transmitting and receiving signals to and from other components. .

The processor 102 according to an embodiment performs the method described with reference to FIGS. 5 to 10 by executing one or more instructions stored in the memory 104 .

On the other hand, the processor 102 is a RAM (Random Access Memory, not shown) and ROM (Read-Only Memory: ROM) for temporarily and / or permanently storing a signal (or data) processed inside the processor 102. , not shown) may be further included. In addition, the processor 102 may be implemented in the form of a system on chip (SoC) including at least one of a graphic processing unit, a RAM, and a ROM.

The memory 104 may store programs (one or more instructions) for processing and controlling the processor 102 . Programs stored in the memory 104 may be divided into a plurality of modules according to functions.

The steps of a method or algorithm described in relation to an embodiment of the present invention may be implemented directly in hardware, as a software module executed by hardware, or by a combination thereof. A software module may contain random access memory (RAM), read only memory (ROM), erasable programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory, hard disk, removable disk, CD-ROM, or It may reside in any type of computer-readable recording medium well known in the art to which the present invention pertains.

The components of the present invention may be implemented as a program (or application) to be executed in combination with a computer, which is hardware, and stored in a medium. The components of the present invention may be implemented as software programming or software components, and similarly, embodiments may include various algorithms implemented as data structures, processes, routines, or combinations of other programming constructs, including C, C++ , Java, assembler, etc. may be implemented in a programming or scripting language. Functional aspects may be implemented in an algorithm running on one or more processors.

As mentioned above, although embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art to which the present invention pertains can realize that the present invention can be embodied in other specific forms without changing its technical spirit or essential features. you will be able to understand Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

100 : server
200: keypad device
300: electronic device
400: display device

Claims (1)

A method for controlling a lecture providing system including a server, an electronic device, a display device, and a keypad device, the method comprising:
transmitting, by the electronic device, a problem and answer information to the problem to the server;
receiving, by the display device, information on the problem from the server and displaying the information;
acquiring, by the keypad device, based on a user command and transmitting it to the server;
obtaining, by the server, a plurality of correct answers information obtained from the keypad device and other keypad devices; and
displaying, by the display device, the plurality of correct answers; including,
The keypad device includes a keypad input unit for receiving a user command and a receiving unit for accommodating the student terminal,
The student terminal includes a short-range wireless communication performing unit for communicating with the keypad device,
The receiving unit includes a short-range wireless communication performing unit for communicating with the student terminal,
The control method is
activating the attendance application by the student terminal connected to the keypad device through the short-range wireless communication performing unit of the keypad device when the student terminal is accommodated in the keypad device;
When the attendance application is activated through the student terminal, the server, acquiring the location information of the student terminal; and
Comprising, by the server, comparing the location information of the student terminal with the location information of the keypad device, obtaining the attendance of the student corresponding to the student terminal; including, a control method.

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