WO2024101487A1 - Lecture recording method for maintaining original resolution and minimizing file size - Google Patents

Lecture recording method for maintaining original resolution and minimizing file size Download PDF

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Publication number
WO2024101487A1
WO2024101487A1 PCT/KR2022/017765 KR2022017765W WO2024101487A1 WO 2024101487 A1 WO2024101487 A1 WO 2024101487A1 KR 2022017765 W KR2022017765 W KR 2022017765W WO 2024101487 A1 WO2024101487 A1 WO 2024101487A1
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lecture
recording
information
lecturer
voice
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PCT/KR2022/017765
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French (fr)
Korean (ko)
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박상욱
이인호
김체호
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(주) 이즈커뮤니케이션즈
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Publication of WO2024101487A1 publication Critical patent/WO2024101487A1/en

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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/10Services
    • G06Q50/20Education
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/84Generation or processing of descriptive data, e.g. content descriptors
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85Assembly of content; Generation of multimedia applications
    • H04N21/854Content authoring
    • H04N21/8543Content authoring using a description language, e.g. Multimedia and Hypermedia information coding Expert Group [MHEG], eXtensible Markup Language [XML]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/765Interface circuits between an apparatus for recording and another apparatus
    • H04N5/77Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/91Television signal processing therefor
    • H04N5/92Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback

Definitions

  • This invention relates to a method of recording a lecture that maintains the original resolution and minimizes the file size. Specifically, the entire lecture is recorded while maintaining the resolution of the content, textbooks, or instructor's writing used in the lecture in the original state. This is about a method to record lectures by minimizing the size of data.
  • the lecture is recorded and delivered to viewers.
  • the lecturer writes it on a board or in a textbook, etc.
  • the camera captures it and saves it on the server as a multimedia file containing audio and video.
  • the learner receives the multimedia file from the server and plays it with a program that can play the multimedia file to watch the lecture. I do it.
  • Republic of Korea Patent Publication No. 10-1421066 discloses an invention titled 'System, method, and recording medium on which computer programs are recorded for providing multimedia content including audio files.
  • the invention in Document 1 provides a system for generating synthetic content including videos, photos, and voices.
  • synthesized content is created by combining videos or photos with audio related to them.
  • the lecture data forms a multimedia file combining video and audio, resulting in an excessive file size, and in particular, it is difficult to check text or images in the video included in the file. Even if the image is enlarged for this purpose, there is a problem that it is difficult to check the text or image due to the decrease in resolution.
  • Republic of Korea Patent Publication No. 10-1845390 discloses an invention titled 'Online learning coaching device and method based on learning video files obtained using an electronic pen.
  • the invention in Document 2 proposes a method of synchronizing the movement data and voice data of the electronic pen used in lectures to create a learning video file and providing this file to users in real time in a streaming manner.
  • the multimedia file has a very large file size, which reduces the storage capacity of the server. It must be very large and will act as a large load on the network transmitting the file or the recipient's computer.
  • This invention seeks to provide a method of recording lectures that maintains the original resolution and minimizes the file size.
  • the purpose of this invention is to maintain the resolution of the content used in the lecture or the instructor's writing in the original state while recording the lecture in the file.
  • the goal is to provide a way to record lectures while minimizing the size.
  • the problem to be solved by this invention is, according to this invention, an input means for inputting events performed by a lecturer and actions related to the lecture, a video recording element for recording an image of the act of lecture, and an audio recording element for recording the lecturer's voice.
  • This is achieved by a lecture recording method of recording a lecture using a lecture recording system having recording means.
  • the lecture recording method according to this invention is:
  • Event information indicating the operation of elements that indicate various input actions by the lecturer to the lecture recording system writing information about the lecturer's act of writing on the lecture board or, voice information about the lecturer's lecture voice, and the lecturer's lecture status. Forming the captured video information and information about the teaching materials used by the lecturer into separate files,
  • each file as data in a hypertext markup language along with time information regarding the information stored in each file;
  • HTML Hypertext Markup Language
  • the various actions of the lecturer, teaching materials, audio of the lecturer's lecture, and video of the state of giving the lecture are stored as separate files, so the capacity of the data saved when recording data about this lecture is saved.
  • the capacity of the data saved when recording data about this lecture is saved.
  • the resolution of the lecture video or textbook is maintained as the original when playing the lecture based on the lecture recording data in the future, so even if the user wants to view the video or textbook by enlarging it, the resolution is high. You can watch it in high resolution.
  • the lecturer's various input actions into the lecture recording system are implemented to include the act of changing the page of the textbook used for the lecture, operating information about the computer used for the lecture, and entering information about the computer used for the lecture. It can be.
  • this event information is stored as a separate file, the recorded file is not stored and played as a large multimedia file, but various data are extracted and played back from each file according to the event information, so the size of the lecture recording file is reduced. Minimized and easy to reproduce.
  • the video recording method according to the invention includes:
  • the writing information may include information about the instructor's act of marking images or characters on textbooks or boards used in lectures.
  • Figure 1 is a diagram conceptually showing the configuration of hardware required to implement one embodiment of the lecture recording method according to this invention.
  • Figure 2 is a diagram conceptually showing the configuration of hardware for recording lectures according to this invention.
  • the method of this invention and the embodiments of this invention are related to lectures, and the term lecture explained in this specification refers to the teaching of academics by a teacher to students at an educational institution such as a school. It does not only mean conveying related content, but refers to all cases where the person who owns or acquires the information conveys it to the learner as the subject who wants to accept the information.
  • the term instructor is not limited to teachers, and the term learner is not limited to students.
  • Figure 1 shows an information transmission system between an information device and an information device for creating, storing, and playing a recorded lecture according to a lecture recording method according to an embodiment of the present invention.
  • the instructor computer 50 refers to an information device that allows the instructor to give a lecture and generate and store various contents and information related to the lecture. Audio information, video information, event information, various operation information of the instructor, and information on the teaching materials used by the instructor generated during the instructor's lecture are recorded as information by the means described in FIG. 2 and input into the instructor's computer 50. It is input through the web server (3) of the lecture server (1) through the network and stored in the database (2).
  • a learner wants to take a lecture by playing a recorded lecture, the learner connects to the lecture server (1) using his or her computer (6), and the lecture server (1) accesses the database through the web server (3).
  • the data related to the lecture recording stored in (2) is provided as HTML to the learner's computer (6), and the learner plays the lecture through a web browser on his or her computer (6).
  • a lecture recording system will be described as a configuration of hardware for recording an instructor's lecture.
  • the lecture recording system includes a screen 20 as a display device, a projector 10 that projects an image on the screen, and an infrared pen as an information input means that is held and used by the instructor and is configured to emit infrared light from the tip of the screen by contacting the screen.
  • a screen 20 as a display device
  • a projector 10 that projects an image on the screen
  • an infrared pen as an information input means that is held and used by the instructor and is configured to emit infrared light from the tip of the screen by contacting the screen.
  • it is composed of a camera device 40 configured to capture a reflected image reflected from the screen 20, and a computer 50 to which the camera device and a projector are connected.
  • the projector 10 has a typical configuration that generates or reproduces images such as the screen of a program running on the computer 50 or various presentation contents and transmits them to the projector 10.
  • the screen 20 is a regular screen that is installed on the wall of a classroom or conference room and can project and display images as needed.
  • the display device referred to in this specification is not limited to the screen 20 and the projector 10, but is connected to the computer 50 as an external device, such as an LCD monitor, and is a screen generated or reproduced by the computer 50. It can also be configured to display .
  • the camera device 40 is arranged to take pictures toward the screen 20.
  • the camera device 40 like a conventional camera, is a lens mechanism that focuses incident light on an imaging element, and an imaging element that converts the light incident and focused through the lens mechanism into an electrical signal, and includes a CMOS element and an electrical signal from the CMOS element. It is composed of a memory and a processor that processes and stores video data.
  • the infrared pen 30 is positioned close to the screen, for example, and is used by an instructor conducting a presentation or lecture using an image projected on the screen, such as an action of switching or stopping the image projected on the screen. It is used to control the computer 50 and display characters or figures on the screen.
  • the infrared pen 30 is provided with an infrared light-emitting element at the tip, etc., and emits infrared light by approaching or contacting the screen 20 or by the instructor's operation.
  • a laser pointer may be used, or infrared light parallel to the surface of the screen 20 may be irradiated so that the infrared light is reflected from the instructor's fingers.
  • the instructor's voice is input to the computer 50 through the microphone 60.
  • the microphone 60 may be worn or held by an instructor, and may be provided on the computer as a peripheral device of the computer or may be installed at any location in the classroom.
  • the screen generated by the computer 50 or the image or video played back is transmitted to the projector 10 and projected on the screen 20 through the projector 10.
  • the images displayed on such a screen may be teaching materials used by the instructor.
  • the camera 40 captures the screen 20, and the captured image is transmitted to and stored in the computer.
  • the instructor's voice input through the microphone 60 is also input to the computer 50 and stored as voice data.
  • the instructor can cause the infrared pen 30 to emit light by touching a specific point on the screen projected on the screen.
  • the infrared light from the infrared pen 30 is irradiated to the screen 20 so that the image of the infrared light is included in the screen of the image captured by the camera 40, and the computer 50 displays the infrared light from the screen of the image captured by the camera.
  • the image is extracted, the coordinates of the image are calculated, and it is determined that there is information input by the instructor at the point of the coordinates.
  • a series of images of infrared light resulting from this movement are coordinates in a series of screens of images transmitted from the camera 40 to the computer.
  • the computer determines that the instructor displays a line on the screen of the computer from the points of the image of infrared light whose coordinates continuously change, and displays the image about the line on the screen (20) through the projector (10). ) is included in the image projected.
  • the entered information is stored as an event regarding the instructor's actions.
  • the image captured by the camera 40 is stored in the computer 50 as an image file as image data.
  • the instructor's actions of inputting various information through the infrared pen 30 are stored as event information as a separate event file.
  • the video information, audio information, event information, and information about teaching materials stored as above are stored as individual files along with information on the time each information was executed, and are included in the lecture along with data in the hypertext markup language that can be played through a web browser.
  • Form recording information is stored as individual files along with information on the time each information was executed, and are included in the lecture along with data in the hypertext markup language that can be played through a web browser.
  • the textbook used in the lecture is stored in its original form, that is, if the textbook is formed as a file such as PDF, Word File, HWP, or PPT, the original format is maintained.
  • various information about the lecture that is, the instructor's voice, information about various characters or images that the instructor inputs on the board or textbook, and the instructor's textbook or textbook file.
  • Information about computer control actions and images of the instructor giving a lecture on the screen or board are stored as data generated by microphones, cameras, infrared pens, etc., which are means of acquiring the information, and time information is included. Create lecture recording information.
  • the lecture recording information formed in this way has a very small size compared to the multimedia files formed according to the prior art regarding the lecture, so it is very simple and quick to form, store, transmit, and play the lecture information.
  • video information, image or text information input by the instructor, and information in the textbook have a higher resolution than that realized in a multimedia file formed by simply recording the lecture scene, that is, the original resolution, so the learner can When recording a lecture, you can watch the video or image you want to see in high resolution.

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Abstract

The present invention relates to a lecture recording method for recording a lecture by using a lecture recording system, which includes an input means for inputting an event performed by a lecturer and an action related to the lecture, a video recording element for recording video related to the act of lecturing, and a voice recording means for recording the voice of the lecturer, and the lecture recording method of the present invention comprises the steps of: creating respective files for event information indicating the operation of elements in which the lecturer displays various input acts for the lecture recording system, writing information related to the act of the lecturer writing on a lecture board or, voice information related to the voice in which the lecturer lectures, video information obtained by capturing the state in which the lecturer lectures, and information related to the teaching materials used by the lecturer in the lecture; generating respective files as hypertext markup language data together with time information related to information stored in each file; and storing, in a computer, the generated hypertext markup language data related to the lecture recording.

Description

원본의 해상도를 유지하며 파일 크기를 최소화하는 강의 녹화 방법How to record lectures while maintaining original resolution and minimizing file size
이 발명은 원본의 해상도를 유지하며 파일 크기를 최소화하는 강의 녹화 방법에 관한 것으로서, 구체적으로는 강의에서 사용하는 컨텐츠나 교재 또는 강사의 판서 등의 해상도를 원본의 상태로 유지하면서도 강의를 녹화한 전체 데이터의 크기를 최소화하여 강의를 녹화할 수 있는 방법에 관한 것이다.This invention relates to a method of recording a lecture that maintains the original resolution and minimizes the file size. Specifically, the entire lecture is recorded while maintaining the resolution of the content, textbooks, or instructor's writing used in the lecture in the original state. This is about a method to record lectures by minimizing the size of data.
최근에는 정보통신 네트워크의 발달 및 감염병의 창궐로 인한 비대면 접촉의경향으로 인하여, 정보를 전달하려는 사람과 정보를 습득하려는 사람이 접촉하지 않고 온라인으로 접속하여 강의 등을 진행하기도 하고, 그러한 강의를 녹화하여 서버에 저장하고 수강자가 저장된 멀티미티어 컨텐츠를 수신하여 재생하는 일이 빈번하게 일어나고 있다.Recently, due to the trend of non-face-to-face contact due to the development of information and communication networks and the spread of infectious diseases, people who want to convey information and people who want to acquire information access the information online and conduct lectures, etc., without contact. Recording and saving on a server, and students receiving and playing the saved multimedia content, frequently occur.
강사가 지식을 수강생들에게 전달하거나 상품 또는 서비스에 대한 설명을 고객에게 전달하는 강의를 대상자에게 현장에서 직접 전달하지 않고, 해당 강의를 녹화하여 시청자에게 전달하는 경우, 예컨대 강사가 보드 또는 교재 등에 판서를 하고 음성으로 설명을 하면 카메라가 이를 촬영하여 음성 및 영상이 포함된 멀티미디어 파일로 서버에 저장하고 수강자가 서버로부터 해당 멀티미디어 파일을 수신하여 해당 멀티미디어 파일을 재생할 수 있는 프로그램으로 재생하여 해당 강의를 시청하게 된다.When an instructor delivers a lecture to deliver knowledge to students or an explanation of a product or service to a customer, rather than delivering it directly to the audience, the lecture is recorded and delivered to viewers. For example, the lecturer writes it on a board or in a textbook, etc. When the explanation is given in voice, the camera captures it and saves it on the server as a multimedia file containing audio and video. The learner receives the multimedia file from the server and plays it with a program that can play the multimedia file to watch the lecture. I do it.
그러한 방법의 하나로서, 대한민국 등록특허공보 제10-1421066호(문헌 1)은 '음성파일이 포함된 멀티미디어 콘텐츠 제공 시스템, 방법 및 컴퓨터 프로그램이 기록된 기록 매체'라는 명칭의 발명을 개시한다.As one such method, Republic of Korea Patent Publication No. 10-1421066 (Document 1) discloses an invention titled 'System, method, and recording medium on which computer programs are recorded for providing multimedia content including audio files.'
문헌 1의 발명은 영상, 사진 및 음성 등이 포함된 합성 콘텐츠를 생성하는 시스템을 제공하며, 이 발명에서는 영상 또는 사진에 그에 관련된 음성을 결합하여 합성된 컨텐츠를 생성한다.The invention in Document 1 provides a system for generating synthetic content including videos, photos, and voices. In this invention, synthesized content is created by combining videos or photos with audio related to them.
이러한 문헌 1의 발명을 강의 녹화 방법으로서 이용하는 경우, 강의 데이터는 영상과 음성 등이 결합된 멀티미디어 파일을 형성하여 파일의 크기가 과대하게 되고, 특히 해당 파일에 포함된 영상에서 문자나 이미지 등을 확인하기 위해 영상을 확대하여도 해상도의 저하로 인하여 문자나 이미지의 확인이 어렵게 된다는 문제가 있다.When the invention of Document 1 is used as a lecture recording method, the lecture data forms a multimedia file combining video and audio, resulting in an excessive file size, and in particular, it is difficult to check text or images in the video included in the file. Even if the image is enlarged for this purpose, there is a problem that it is difficult to check the text or image due to the decrease in resolution.
다른 방법으로서, 대한민국 등록특허공보 제10-1845390호(문헌 2)에서는 '전자펜을 이용하여 획득한 학습 동영상 파일에 기반한 온라인 학습 코칭 장치 및 방법'이라는 명칭의 발명을 개시한다.As another method, Republic of Korea Patent Publication No. 10-1845390 (Document 2) discloses an invention titled 'Online learning coaching device and method based on learning video files obtained using an electronic pen.'
문헌 2의 발명에서는 강의에서 사용하는 전자펜의 움직임 데이터와 음성 데이터를 동기화하여 학습 동영상 파일을 생성하여 이 파일을 실시간으로 사용자에게 스트리밍 방식으로 제공하는 방법을 제시하고 있다.The invention in Document 2 proposes a method of synchronizing the movement data and voice data of the electronic pen used in lectures to create a learning video file and providing this file to users in real time in a streaming manner.
그러나, 이러한 문헌 2의 발명에서는 강의에서 사용하는 교재를 어떻게 제공할 것인지, 그리고 강의 동영상을 어떠한 방식으로 수강자에게 제공할 것인지에 대해서는 아무런 교시가 없는 것은 물론이고, 이와 같이 제공된 학습 동영상 파일이 어떻게 전체 강의의 녹화에 사용될 것인지에 대해서는 아무런 교시를 하고 있지 않다.However, in the invention of Document 2, there is no teaching on how to provide teaching materials used in lectures and how to provide lecture videos to students, and also how the learning video files provided in this way can be used for the entire lecture. There is no indication as to whether it will be used for recording.
이상과 같이, 종래 기술에서는 온라인으로 강의를 수강자에게 전달하는 방식에 있어서, 강의를 녹화하여 멀티미디어 파일을 형성하여 수강자에게 제공하려는 경우, 해당 멀티미디어 파일은 매우 큰 파일 크기를 가지게 되어 서버의 저장 용량을 매우 크게 하여야 하고, 해당 파일을 전송하는 네트워크나 수신자의 컴퓨터에 큰 부하로서 작용하게 된다.As described above, in the prior art, in the method of delivering lectures to students online, if the lecture is recorded to form a multimedia file and provided to the students, the multimedia file has a very large file size, which reduces the storage capacity of the server. It must be very large and will act as a large load on the network transmitting the file or the recipient's computer.
더욱이, 수신자가 해당 멀티미디어 파일에서의 영상 중에 표시되는 이미지나 문자 등을 식별하기 어려워 재생 화면을 크게 확대하여도 재생 화면에서 나타나는 이미지나 문자는 서버에서 제공하는 멀티미디어 파일에서의 해상도 이상으로 확대되어 시청자에게 제공될 수 없다는 문제가 있다.Moreover, even if the recipient enlarges the playback screen because it is difficult for the recipient to identify images or text displayed among the video in the multimedia file, the images or text appearing on the playback screen are enlarged beyond the resolution of the multimedia file provided by the server, allowing the viewer There is a problem that it cannot be provided to.
또한, 수강자는 강의를 녹화한 멀티미디어 파일을 재생할 수 있는 특정한 프로그램을 구비하여야 한다는 불편함이 있다.Additionally, there is an inconvenience in that students must be equipped with a specific program that can play multimedia files recorded from lectures.
이 발명은 원본의 해상도를 유지하며 파일 크기를 최소화하는 강의 녹화 방법을 제공하려는 것으로서, 구체적으로는 강의에서 사용하는 컨텐츠나 강사의 판서 등의 해상도를 원본의 상태로 유지하면서도 강의를 녹화한 파일의 크기를 최소화하여 강의를 녹화할 수 있는 방법을 제공하려는 것이다.This invention seeks to provide a method of recording lectures that maintains the original resolution and minimizes the file size. Specifically, the purpose of this invention is to maintain the resolution of the content used in the lecture or the instructor's writing in the original state while recording the lecture in the file. The goal is to provide a way to record lectures while minimizing the size.
이 발명이 해결하고자 하는 과제는, 이 발명에 따른, 강의자가 행하는 이벤트와 강의에 관한 행동을 입력하는 입력 수단, 강의가 이루어지는 행위에 관한 영상을 기록하는 영상 기록 요소 및 강의자의 음성을 기록하는 음성 기록 수단을 가지는 강의 녹화 시스템을 이용하여 강의를 녹화하는 강의 녹화 방법에 의해 달성된다.The problem to be solved by this invention is, according to this invention, an input means for inputting events performed by a lecturer and actions related to the lecture, a video recording element for recording an image of the act of lecture, and an audio recording element for recording the lecturer's voice. This is achieved by a lecture recording method of recording a lecture using a lecture recording system having recording means.
이 발명에 따른 강의 녹화 방법은, The lecture recording method according to this invention is:
강의자가 강의 녹화 시스템에 대한 각종 입력 행위를 나타내는 요소의 작동을 나타내는 이벤트 정보, 강의자가 강의용 보드 또는 에 판서하는 행위에 관한 판서 정보, 강의자가 강의하는 음성에 관한 음성 정보, 강의자가 강의하는 상태를 촬영한 영상 정보 및 강의자가 강의에 사용하는 교재에 관한 정보를 각각의 파일로 형성하는 단계, Event information indicating the operation of elements that indicate various input actions by the lecturer to the lecture recording system, writing information about the lecturer's act of writing on the lecture board or, voice information about the lecturer's lecture voice, and the lecturer's lecture status. Forming the captured video information and information about the teaching materials used by the lecturer into separate files,
상기 각각의 파일을 각각의 파일에 저장된 정보에 관한 시간 정보와 함께 하이퍼텍스트 마크업 언어의 데이터로서 생성하는 단계, 및generating each file as data in a hypertext markup language along with time information regarding the information stored in each file; and
생성된 강의 녹화에 관한 하이퍼텍스트 마크업 언어(Hypertext Markup Language, HTML)의 데이터를 컴퓨터에 저장하는 단계를 포함하는 것이다.It includes the step of storing Hypertext Markup Language (HTML) data about the created lecture recording on a computer.
이 발명의 강의 녹화 방법에서는, 강의자의 각종 행위, 교재, 강의자의 강의에 관한 음성 및 강의를 행하는 상태에 관한 영상이 별도의 파일로 저장되므로, 이 강의에 관한 녹화 데이터를 저장할 때에 저장된 데이터의 용량이 최소화하여, 강의녹화 데이터의 저장이 용이하고, 강의에 관한 데이터를 수강자에게 전달할 때에 네트워크의 전송 용량이 최소화한다.In the lecture recording method of this invention, the various actions of the lecturer, teaching materials, audio of the lecturer's lecture, and video of the state of giving the lecture are stored as separate files, so the capacity of the data saved when recording data about this lecture is saved. By minimizing this, it is easy to store recorded lecture data, and the transmission capacity of the network is minimized when delivering lecture-related data to students.
더욱이, 강의의 녹화에 관한 각종 데이터가 원본 형태로 저장되므로 추후 강의 녹화 데이터에 기초하여 강의를 재생할 때에 강의 영상이나 교재의 해상도가 원본 그대로 유지되므로 사용자가 영상이나 교재를 확대하여 시청하려는 경우에도 높은 해상도로 시청할 수 있다.Moreover, since various data related to the recording of the lecture are stored in the original form, the resolution of the lecture video or textbook is maintained as the original when playing the lecture based on the lecture recording data in the future, so even if the user wants to view the video or textbook by enlarging it, the resolution is high. You can watch it in high resolution.
특히, 강의에 관한 각종 데이터가 각각의 데이터의 생성에 관한 시간 정보와 함께 하이퍼텍스트 마크업 언어로서 저장되므로 강의 녹화를 재생하기 위해 별도의 프로그램을 요하지 않으므로 통상적으로 사용하는 어떠한 웹브라우저로 재생될 수 있다.In particular, since various data about the lecture are stored as hypertext markup language along with time information about the creation of each data, no separate program is required to play the lecture recording, so it can be played using any commonly used web browser. there is.
이 발명의 부가의 특징으로서, 이 발명에 따른 영상 녹화 방법은, As an additional feature of this invention, the video recording method according to this invention,
강의자가 강의 녹화 시스템에 대한 각종 입력 행위는, 상기 강의에 사용하는 교재의 페이지를 변경하는 행위, 강의에 사용하는 컴퓨터에 대한 조작 정보 및 강의에 사용하는 컴퓨터에 대한 정보 입력 행위를 포함하는 것으로 구현될 수 있다.The lecturer's various input actions into the lecture recording system are implemented to include the act of changing the page of the textbook used for the lecture, operating information about the computer used for the lecture, and entering information about the computer used for the lecture. It can be.
이러한 이벤트 정보가 별도의 파일로서 저장되므로 녹화 파일은 용량의 큰 멀티미디어 파일로서 저장 및 재생되지 않고 각종의 데이터가 이벤트 정보가 따라 각각의 파일로부터 필요 데이터가 추출되어 재생되므로, 강의 녹화 파일의 크기가 최소화하고 재생이 용이하게 된다.Since this event information is stored as a separate file, the recorded file is not stored and played as a large multimedia file, but various data are extracted and played back from each file according to the event information, so the size of the lecture recording file is reduced. Minimized and easy to reproduce.
이 발명의 추가의 특징으로서, 이 발명에 따른 영상 녹화 방법은, As a further feature of the invention, the video recording method according to the invention includes:
상기 판서 정보에는 교재 또는 강의에 사용하는 보드에 강의자가 이미지 또는 문자를 표기하는 행위에 관한 정보를 포함하는 것으로 구성될 수 있다.The writing information may include information about the instructor's act of marking images or characters on textbooks or boards used in lectures.
따라서, 강의자가 표시한 각종 정보가 멀티미디어 파일에 포함되어 기록 및 재생되지 않으므로, 강의 녹화에 관한 정보의 크기가 최소화하고 강의에 관한 정보의 기록에 따른 저장 용량이 최소화하고 강의의 재생을 위한 정보의 전달 용량이 최소화한다.Therefore, since various information displayed by the lecturer is not included in the multimedia file and recorded and played back, the size of the information related to the lecture recording is minimized, the storage capacity for recording information about the lecture is minimized, and the information for playing the lecture is minimized. Minimize delivery capacity.
도 1은 이 발명에 따른 강의 녹화 방법의 하나의 실시예의 구현에 요하는 하드웨어의 구성을 개념적으로 보여주는 도면이다.Figure 1 is a diagram conceptually showing the configuration of hardware required to implement one embodiment of the lecture recording method according to this invention.
도 2는 이 발명에 따른 강의 녹화를 위한 하드웨어의 구성을 개념적으로 보여주는 도면이다.Figure 2 is a diagram conceptually showing the configuration of hardware for recording lectures according to this invention.
이하, 이 발명을 실시하기 위한 구체적인 내용으로서, 이 발명에 관한 하나의 실시예에 관한 방법과 당해 방법의 구현에 관한 하드웨어의 구성에 대해 설명한다.Hereinafter, as specific details for implementing this invention, a method related to one embodiment of this invention and a hardware configuration related to implementation of the method will be described.
이하의 설명 및 이 명세서 전반을 통하여 이 발명 및 이 발명의 실시예에 관한 방법이 강의에 관한 것으로서 설명하는 바, 이 명세서에서 설명하는 강의라는 용어는 학교 등의 교육 기관에서 교사가 학생에게 학문에 관한 내용을 전달하는 것만을 의미하는 것은 아니고, 정보를 소유하거나 지득한 주체로서의 깅사가 당해 정보를 수용하려는 주체로서의 수강자에게 전달하는 모든 경우를 지칭하는 것이다.Throughout the following description and this specification, it is explained that the method of this invention and the embodiments of this invention are related to lectures, and the term lecture explained in this specification refers to the teaching of academics by a teacher to students at an educational institution such as a school. It does not only mean conveying related content, but refers to all cases where the person who owns or acquires the information conveys it to the learner as the subject who wants to accept the information.
따라서, 이 명세서에서 강사라는 용어는 교사 등에 한정하여 사용하는 것이 아니고 수강자라는 용어 역시 학생 등에 한정하여 사용하는 것이 아니다.Therefore, in this specification, the term instructor is not limited to teachers, and the term learner is not limited to students.
도 1은 이 발명의 하나의 실시예에 따른 강의 녹화 방법에 따라 녹화된 강의가 생성되고 저장되어 재생되기 위한 정보 기기와 정보 기기 사이의 정보 전달 체계를 보여주는 것이다.Figure 1 shows an information transmission system between an information device and an information device for creating, storing, and playing a recorded lecture according to a lecture recording method according to an embodiment of the present invention.
강사 컴퓨터(50)는 강사가 강의를 하고 강의에 관한 각종 컨텐츠와 정보를 생성하여 저장하는 정보 기기를 말한다. 강사의 강의에서 생성되는 음성 정보, 영상 정보, 이벤트 정보, 강사의 각종 조작 정보 및 강사가 사용하는 교재의 정보는 도 2를 통하여 설명하는 수단들에 의해 정보로서 기록되어 강사 컴퓨터(50)에 입력되고 네트워크를 통하여 강의 서버(1)의 웹서버(3)를 통하여 입력되어 데이터 베이스(2)에 저장된다.The instructor computer 50 refers to an information device that allows the instructor to give a lecture and generate and store various contents and information related to the lecture. Audio information, video information, event information, various operation information of the instructor, and information on the teaching materials used by the instructor generated during the instructor's lecture are recorded as information by the means described in FIG. 2 and input into the instructor's computer 50. It is input through the web server (3) of the lecture server (1) through the network and stored in the database (2).
수강자가 녹화된 강의를 재생하여 강의를 수강하고자 하는 경우, 수강자는 자신의 컴퓨터(6)를 이용하여 강의 서버(1)에 접속하고, 강의 서버(1)는 웹 서버(3)를 통하여 데이터 베이스(2)에 저장된 강의 녹화에 관한 데이터를 HTML로서 수강자 컴퓨터(6)에 제공하고, 수강자는 자신의 컴퓨터(6)에서 웹브라우저를 통하여 강의를 재생하게 된다.If a learner wants to take a lecture by playing a recorded lecture, the learner connects to the lecture server (1) using his or her computer (6), and the lecture server (1) accesses the database through the web server (3). The data related to the lecture recording stored in (2) is provided as HTML to the learner's computer (6), and the learner plays the lecture through a web browser on his or her computer (6).
도 2를 참조하여, 강사의 강의를 녹화하기 위한 하드웨어의 구성으로서 강의녹화 시스템을 설명한다.Referring to FIG. 2, a lecture recording system will be described as a configuration of hardware for recording an instructor's lecture.
강의 녹화 시스템은 디스플레이 장치로서의 스크린(20) 및 이 스크린에 영상을 투사하는 프로젝터(10), 강사가 파지하여 사용하며 스크린에 접촉하여 그 선단에서 적외선광을 발광하도록 구성되는 정보 입력 수단으로서의 적외선펜(30), 스크린(20)으로부터 반사되는 반사 영상을 촬영하도록 구성되는 카메라 장치(40) 및 카메라 장치와 프로젝터가 접속되는 컴퓨터(50)로 구성되어 있다.The lecture recording system includes a screen 20 as a display device, a projector 10 that projects an image on the screen, and an infrared pen as an information input means that is held and used by the instructor and is configured to emit infrared light from the tip of the screen by contacting the screen. (30), it is composed of a camera device 40 configured to capture a reflected image reflected from the screen 20, and a computer 50 to which the camera device and a projector are connected.
프로젝터(10)는 컴퓨터(50)에서 실행되는 프로그램의 화면이나 각종의 프리젠테이션 컨텐츠 등의 영상을 생성하거나 재생하여 프로젝터(10)로 송신하는 통상적인 구성의 것이다. The projector 10 has a typical configuration that generates or reproduces images such as the screen of a program running on the computer 50 or various presentation contents and transmits them to the projector 10.
스크린(20)은 강의실이나 회의실 등의 벽면에 설치되어 필요에 따라 영상이 투사되어 보여질 수 있는 통상의 스크린이다. 그러나, 이 명세서에서 언급하는 디스플레이 장치는 이러한 스크린(20)과 프로젝터(10)에 한정되지 않고 LCD 모니터와 같이 컴퓨터(50)에 외부 장치의 하나로서 연결되어 컴퓨터(50)에서 생성하거나 재생하는 화면을 디스플레이하는 것으로 구성할 수도 있다.The screen 20 is a regular screen that is installed on the wall of a classroom or conference room and can project and display images as needed. However, the display device referred to in this specification is not limited to the screen 20 and the projector 10, but is connected to the computer 50 as an external device, such as an LCD monitor, and is a screen generated or reproduced by the computer 50. It can also be configured to display .
카메라 장치(40)는 스크린(20)을 향하여 촬영하도록 배치되어 있다. 카메라 장치(40)는 통상적인 카메라와 마찬가지로 입사되는 광을 촬상 소자에 집속하는 렌즈 기구, 렌즈 기구를 통하여 입사되어 집속되는 광을 전기 신호로 변환하는 촬상 소자로서 CMOS 소자 및 CMOS 소자로부터의 전기 신호를 영상 데이터로서 처리하고 저장하는 메모리와 프로세서를 포함하여 구성되는 것이다.The camera device 40 is arranged to take pictures toward the screen 20. The camera device 40, like a conventional camera, is a lens mechanism that focuses incident light on an imaging element, and an imaging element that converts the light incident and focused through the lens mechanism into an electrical signal, and includes a CMOS element and an electrical signal from the CMOS element. It is composed of a memory and a processor that processes and stores video data.
이 실시예의 정보 입력 시스템에서 적외선펜(30)은, 예컨대 스크린에 근접하여 위치하면서 스크린에 투사되는 영상을 이용하여 프레젠테이션이나 강의를 진행하는 강사가 스크린에 투사되는 영상을 전환하거나 중지시키는 동작과 같은 컴퓨터(50)의 제어 및 스크린에 문자나 도형 등을 표시하기 위해 사용하는 것이다. In the information input system of this embodiment, the infrared pen 30 is positioned close to the screen, for example, and is used by an instructor conducting a presentation or lecture using an image projected on the screen, such as an action of switching or stopping the image projected on the screen. It is used to control the computer 50 and display characters or figures on the screen.
적외선펜(30)은 선단 등에 적외선 발광 소자가 마련되어 스크린(20)에 근접하거나 접촉하여 또는 강사의 조작에 의해 적외선광을 발광하는 것이다.The infrared pen 30 is provided with an infrared light-emitting element at the tip, etc., and emits infrared light by approaching or contacting the screen 20 or by the instructor's operation.
강사의 입력 수단으로서, 적외선광을 발광하는 적외선펜 외에도 레이저 포인터가 이용될 수도 있고, 강사의 손가락에서 적외선광 등이 반사되도록 스크린(20)의 표면에 근접하게 평행한 적외선광을 조사할 수도 있다.As an input means for the instructor, in addition to an infrared pen that emits infrared light, a laser pointer may be used, or infrared light parallel to the surface of the screen 20 may be irradiated so that the infrared light is reflected from the instructor's fingers. .
강사의 음성은 마이크(60)를 통하여 컴퓨터(50)에 입력된다. 마이크(60)는 강사가 착용하거나 파지하여 사용할 수도 있고, 컴퓨터의 주변 장치로서 컴퓨터에 마련되거나 강의실의 임의의 위치에 마련될 수 있다.The instructor's voice is input to the computer 50 through the microphone 60. The microphone 60 may be worn or held by an instructor, and may be provided on the computer as a peripheral device of the computer or may be installed at any location in the classroom.
이상과 같이 구성된 정보 입력 시스템에서의 정보 입력 과정을 설명한다.The information input process in the information input system configured as above will be described.
컴퓨터(50)에서 생성하는 화면 또는 재생하는 이미지나 영상이 프로젝터(10)에 송신되어 프로젝터(10)를 통하여 스크린(20)에 투사된다. 그러한 화면에 조사되는 영상은 강사가 이용하는 교재일 수 있다. The screen generated by the computer 50 or the image or video played back is transmitted to the projector 10 and projected on the screen 20 through the projector 10. The images displayed on such a screen may be teaching materials used by the instructor.
카메라(40)는 스크린(20)을 촬영하고, 촬영된 영상은 컴퓨터에 송신되어 저장되며, 마이크(60)로 입력된 강사의 음성도 컴퓨터(50)에 입력되어 음성 데이터로서 저장된다.The camera 40 captures the screen 20, and the captured image is transmitted to and stored in the computer. The instructor's voice input through the microphone 60 is also input to the computer 50 and stored as voice data.
강사가 스크린에 투사된 화면에서 특정 지점을 터치하여 적외선펜(30)이 발광되게 할 수 있다. 적외선펜(30)으로부터의 적외선광은 스크린(20)에 조사되어 카메라(40)가 촬영한 영상의 화면에 적외선광의 이미지가 포함되고, 컴퓨터(50)는 카메라가 촬영한 영상의 화면으로부터 적외선광의 이미지를 추출하고, 이미지의 좌표를 산출하여, 해당 좌표의 지점에 강사에 의한 정보 입력이 있는 것으로 판정한다.The instructor can cause the infrared pen 30 to emit light by touching a specific point on the screen projected on the screen. The infrared light from the infrared pen 30 is irradiated to the screen 20 so that the image of the infrared light is included in the screen of the image captured by the camera 40, and the computer 50 displays the infrared light from the screen of the image captured by the camera. The image is extracted, the coordinates of the image are calculated, and it is determined that there is information input by the instructor at the point of the coordinates.
만일, 강사가 적외선펜(30)을 가지고 스크린(20)에 선을 긋는 동작을 한다면, 이 동작에 따른 적외선광의 일련의 이미지는 카메라(40)로부터 컴퓨터에 전송된 영상의 일련의 화면들에서 좌표를 달리하면서 표시될 것이고, 컴퓨터는 좌표가 연속적으로 변하는 적외선광의 이미지의 지점들로부터 강사가 컴퓨터의 화면에 선을 표시하는 것으로 판정하고, 해당 선에 관한 이미지를 프로젝터(10)를 통하여 스크린(20)에 투사하는 영상에 포함시킨다.If the instructor moves to draw a line on the screen 20 with the infrared pen 30, a series of images of infrared light resulting from this movement are coordinates in a series of screens of images transmitted from the camera 40 to the computer. will be displayed while varying, and the computer determines that the instructor displays a line on the screen of the computer from the points of the image of infrared light whose coordinates continuously change, and displays the image about the line on the screen (20) through the projector (10). ) is included in the image projected.
이와 같은 방식으로 강사에 의한 스크린(20)에서의 정보 입력이 이루어진다.In this way, information is input into the screen 20 by the instructor.
입력된 정보는 강사의 행위에 관한 이벤트로서 저장된다. 강사가 스크린(20)에 표시된 컴퓨터(50)에 관한 각종 조작 행위, 예컨대, 교재의 페이지를 변경하는 등의 행위에 관한 정보는 이벤트 정보로서 당해 이벤트가 발생한 시간 정보와 함께 저장된다.The entered information is stored as an event regarding the instructor's actions. Information about the instructor's various operating actions on the computer 50 displayed on the screen 20, such as changing pages of a textbook, is stored as event information along with information on the time when the event occurred.
강사가 적외선펜(30)으로 스크린(20)에 문자를 기재하거나 이미지를 표시하는 경우에는 해당 문자나 이미지에 관한 정보가 벡터 정보나 이미지 정보로서 저장된다.When an instructor writes text or displays an image on the screen 20 using the infrared pen 30, information about the text or image is stored as vector information or image information.
카메라(40)가 촬영한 영상은 영상 데이터로서 영상 파일로 컴퓨터(50)에 저장된다. 또한, 적외선펜(30)을 통한 강사의 각종 정보 입력 행위는 이벤트 정보로서 별도의 이벤트 파일로서 저장된다.The image captured by the camera 40 is stored in the computer 50 as an image file as image data. In addition, the instructor's actions of inputting various information through the infrared pen 30 are stored as event information as a separate event file.
이상과 같이 저장된 영상 정보, 음성 정보, 이벤트 정보 및 교재에 관한 정보는 각각의 정보가 실행된 시간 정보와 함께 각각의 파일로서 저장되고 웹브라우저를 통하여 재생 가능한 하이퍼텍스트 마크업 언어의 데이터와 함께 강의 녹화 정보를 형성한다.The video information, audio information, event information, and information about teaching materials stored as above are stored as individual files along with information on the time each information was executed, and are included in the lecture along with data in the hypertext markup language that can be played through a web browser. Form recording information.
특히 강의에서 사용한 교재는 그 교재가 가지는 본래의 형태, 즉 교재가 PDF, Word File, HWP, PPT 등의 파일로 형성된 경우, 그 원본의 형식을 그대로 유지하여 저장된다.In particular, the textbook used in the lecture is stored in its original form, that is, if the textbook is formed as a file such as PDF, Word File, HWP, or PPT, the original format is maintained.
이상과 같은 이 발명의 하나의 실시예에 따른 강의 녹화 방법에서는 강의에 관한 각종 정보, 즉 강사의 음성, 강사가 보드나 교재에 입력하는 각종 문자나 이미지에 관한 정보, 강사의 교재 또는 교재 파일이 실행되는 컴퓨터에 대한 제어 행위, 강사가 스크린 또는 보드에서 강의를 행하는 모습에 관한 영상에 관한 정보가 당해 정보를 취득하는 수단인 마이크, 카메라, 적외선펜 등에 의해 생성된 데이터 그대로 저장되어 시간 정보가 함께 강의 녹화 정보를 형성한다.In the method of recording a lecture according to an embodiment of the present invention as described above, various information about the lecture, that is, the instructor's voice, information about various characters or images that the instructor inputs on the board or textbook, and the instructor's textbook or textbook file. Information about computer control actions and images of the instructor giving a lecture on the screen or board are stored as data generated by microphones, cameras, infrared pens, etc., which are means of acquiring the information, and time information is included. Create lecture recording information.
이렇게 형성된 강의 녹화 정보는 강의에 관하여 종래 기술에 따라 형성되는 멀티미디어 파일에 대비하여 매우 작은 크기를 가지므로, 해당 강의 정보를 형성하고 저장하고 전송하며 재생하는 것이 매우 간편하고 신속하게 이루어진다.The lecture recording information formed in this way has a very small size compared to the multimedia files formed according to the prior art regarding the lecture, so it is very simple and quick to form, store, transmit, and play the lecture information.
특히 영상 정보나 강사에 의해 입력된 이미지 또는 문자의 정보 및 교재의 정보가 강의 현장을 단순히 녹화하여 형성되는 멀티미디어 파일에서 구현되는 것보다 높은 해상도, 즉 원본의 해상도를 가지므로, 재생 시에 수강자가 강의 녹화에서 자신이 보고자 하는 영상이나 이미지를 높은 해상도로 시청할 수 있게 된다.In particular, video information, image or text information input by the instructor, and information in the textbook have a higher resolution than that realized in a multimedia file formed by simply recording the lecture scene, that is, the original resolution, so the learner can When recording a lecture, you can watch the video or image you want to see in high resolution.
이상으로 이 발명의 하나의 실시예에 따른 강의 녹화 방법 및 그에 필요한 히드웨어의 구성과 작동을 설명하였는바, 이 발명은 그러한 실시예의 구성과 작용에 한정되지 않고 청구범위에 기재한 범위에서 다양한 수정과 변형 및 구성 요소의부가가 가능하다.As described above, the lecture recording method and the configuration and operation of the necessary hardware according to an embodiment of the present invention have been described. This invention is not limited to the configuration and operation of the embodiment and can be modified in various ways within the scope of the claims. Modification and addition of components are possible.

Claims (3)

  1. 강의자가 행하는 이벤트와 강의에 관한 행동을 입력하는 입력 수단, 강의가 이루어지는 행위에 관한 영상을 기록하는 영상 기록 요소 및 강의자의 음성을 기록하는 음성 기록 수단을 가지는 강의 녹화 시스템을 이용하여 강의를 녹화하는 강의 녹화 방법으로서, Lectures are recorded using a lecture recording system having an input means for inputting events performed by the lecturer and actions related to the lecture, a video recording element for recording images of the lecture activities, and an audio recording means for recording the lecturer's voice. As a method of recording lectures,
    강의자가 강의 녹화 시스템에 대한 각종 입력 행위를 나타내는 요소의 작동을 나타내는 이벤트 정보, 강의자가 강의용 보드 또는 에 판서하는 행위에 관한 판서 정보, 강의자가 강의하는 음성에 관한 음성 정보, 강의자가 강의하는 상태를 촬영한 영상 정보 및 강의자가 강의에 사용하는 교재에 관한 정보를 각각의 파일로 형성하는 단계, Event information indicating the operation of elements that indicate various input actions by the lecturer to the lecture recording system, writing information about the lecturer's act of writing on the lecture board or, voice information about the lecturer's lecture voice, and the lecturer's lecture status. A step of forming each file with information about the captured video information and the teaching materials used by the instructor in the lecture;
    상기 각각의 파일을 각각의 파일에 저장된 정보에 관한 시간 정보와 함께 하이퍼텍스트 마크업 언어의 데이터로서 생성하는 단계, 및generating each file as data in a hypertext markup language along with time information regarding the information stored in each file; and
    생성된 강의 녹화에 관한 하이퍼텍스트 마크업 언어의 데이터를 컴퓨터에 저장하는 단계Step of saving data in hypertext markup language about the created lecture recording on a computer
    를 포함하는 것인, 강의 녹화 방법.A method of recording a lecture, including:
  2. 청구항 1에 있어서, In claim 1,
    강의자가 강의 녹화 시스템에 대한 각종 입력 행위는, 상기 강의에 사용하는 교재의 페이지를 변경하는 행위, 강의에 사용하는 컴퓨터에 대한 조작 정보 및 강의에 사용하는 컴퓨터에 대한 정보 입력 행위를 포함하는 것인, 강의 녹화 방법.Various input actions by the lecturer into the lecture recording system include the act of changing the page of the textbook used for the lecture, operating information about the computer used for the lecture, and entering information about the computer used for the lecture. , How to record lectures.
  3. 청구항 1에 있어서, In claim 1,
    상기 판서 정보에는 교재 또는 강의에 사용하는 보드에 강의자가 이미지 또는 문자를 표기하는 행위에 관한 정보를 포함하는 것인, 강의 녹화 방법.A method of recording a lecture, wherein the writing information includes information about the lecturer's act of marking images or characters on the textbook or board used in the lecture.
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