KR20040081217A - Combination system add vedio lecture and video conference and D.V.R(Digital Video Record) ability - Google Patents

Abstract

The present invention provides a digital video recording and playback apparatus capable of converting video signals and audio signals into digital forms, and storing and playing them on a hard disk or other storage media. The present invention relates to a system that provides a strength recording function of a recorder (DVR). It provides a real-time video conferencing and video lecture environment by transmitting large amounts of video and audio data from camera and microphone to the remote location using technology, and also uses MPEG-4 video decompression technology to store video information when used as a DVR. Controls speakers, mobile phones, electronic devices, alarms, etc. through outputs using dedicated programs It is a system with all three functions such as video conferencing, video lecture, digital video recording and playback (DVR) using MPEG-4 video compression technology that can play video and audio.

In order to achieve the above object, the present invention receives an analog video signal from a camera and receives an audio signal from a microphone, and converts the input analog video signal and an audio signal into a digital form and compresses it to a MEPG-4 video compression format. -4 Capture chip using a dedicated chip, a storage medium (hard disk) that stores compressed video information in MPEG-4 compression format, and video and audio information stored in the storage medium in MPEG-4 video compression format. It consists of a dedicated program to play, a server for transmitting compressed video and audio signals, and a DB server for user information management of video conferencing and video lecture systems.

Cameras used in the existing video conferencing and video lecture system are mainly low-cost and connected to the USB port to use about 30,000 pixels of low pixel, but the present invention uses video conferencing and video lectures using MPEG-4 dedicated hardware. It is designed to realize clear image on the screen and to use all cameras of high quality by RCA terminal as well as USB-only camera.

In the case of the video lecture system, up to 50 people can proceed with the lecture by listening to the lecture and questioning function, and the video recording is possible. In the video conferencing system, it supports meetings such as full screen support, whiteboard, electronic payment, and secret meetings. It supports all functions and the latest functions of each company's external invader security monitoring, smoke and fire monitoring, remote control of electronic equipment, gas gun firing, video recording and search, human body alarm and mobile phone notification. Mounted.

Through the present invention, it is possible to store a large amount of video information in a storage medium having the same storage capacity as compared to the conventional video conference and video lecture system and digital video recording and playback system (DVR) using MPEG-1 and MPEG-2 compression technology. In addition, video conferencing and video lecture services can be enabled in real time by using the characteristics of the MPEG-4 video compression format, which is used as the underlying technology of the Internet video streaming service.

Description

Combination system add vedio lecture and video conference and D.V.R (Digital Video Record) ability}

The present invention provides a video conference system in a video conference system, a video lecture system, which is a new education system due to the development of the Internet, and a digital video recorder (DVR) for converting and recording and reproducing analog video signals in digital form. It is a system equipped with all functions of), digital video recording and playback (DVR) that enables multi-party video conferencing environment and motion detection, monitoring, recording, recording, etc. to participate in the conference while watching and listening to the video and audio of other participants. It's all about the system.

Especially, MPEG-4 video compression technology that enables higher compression rate than MPEG-1 and MPEG-2, which are used as standard video conferencing and video lectures and DVR's standard compression format, enables clear image transmission at low capacity. It is a system that has both video conferencing and video lecture environment that can send and receive video and audio in real time and digital video recording and playback using MPEG-4 video compression technology.

MPEG-2 has been adopted as a standard for digital TV and DVD, and has become the most widely used video compression format for broadcasting and storage media.However, since the standard was completed in 1995, the compression rate was higher than that of MPEG-4. This has the disadvantage of falling. Due to this problem, MPEG-4 can save and transmit more time compared to MPEG-2 even if it is the same capacity when recording to HDD or other storage media or transferring video data using internet. There is this.

In particular, MPEG-4 is used as a technology that is the basis of video streaming service, a service that enables users to watch video on the Internet in real time. This provides an optimal environment for video lectures where questions and answers are possible.

Accordingly, an object of the present invention is to compress the video signal received from the camera and the audio data received from the microphone into a digital form, and to convert the MPEG-4 video compression format to MPEG-4 video compression technology using MPEG-4 video compression technology. In addition, as in the case of general video conferencing and video lecture system, it is possible to install not only a camera using USB but also RCA terminal processing so that high quality video transmission is possible, and it is possible to transmit such low-capacity high-compression data through the Internet. This enables real-time multi-party video conferencing and video lectures, and provides a digital video recording and playback environment using MPEG-4 video compression technology.

1 is a block diagram for the DVR function

2 is a block diagram for a video conferencing and video lecture function

※ Explanation of code for main part of drawing

10: camera and microphone 20: input unit

30: Video capture board 40: PC

50: each client 60: server

70: output unit 80: speaker

90: mobile phone 100: electronic device

110: alarm

The technical configuration of the present invention for achieving the above object is to compress the video data and audio data input through the camera and the microphone to the MPEG-4 video compression format through a dedicated capture board using the MPEG-4 chip, compressed digital video Information is sent to a server for multi-party video conferencing and video lectures, and then re-transmitted to each client. Each client decompresses MPEG-4 video data from the server into MPEG-4 format and displays it on a monitor. MPEG-4, a compression codec that has demonstrated excellent performance in internet transmission due to low data volume due to high compression, transmits and plays video and audio in real time without delay. To make it possible. In addition, when used as a digital video recorder and player (DVR), the video information is stored in a storage medium for each PC, the video compression information stored in the MPEG-4 video compression format is decompressed, and the decompressed digital video data Play and play by PC.

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

1 is a flowchart illustrating the operation principle of the DVR according to the present invention.

As referred to herein, the analog video signal input to the camera and the microphone 10 of each client 50 is input through the input unit 20 is configured to be delivered to the image capture board 30 and the image capture board 30 is configured to convert the compressed analog video signal and the audio signal into a digital form using the MPEG-4 compression method and deliver the same to each client PC 40. Each of the client PCs 40 displays the digital video information and audio information transmitted to the monitor in real time, and functions as a monitoring device using motion detection, sensor detection, etc. as a DVR, and the displayed video is MPEG, a high compression method. -4 Save it to your PC's hard drive. Each client PC 40 decompresses the video and audio data stored in the MEPG-4 method and displays it on each client monitor when requested by the user. When operating the DVR function for each PC (40) to transfer the signal to the output unit 70 using the motion detection and sensor input and output control of the dedicated program to operate the speaker 80, or to the mobile phone (90) It is possible to transmit specifics, to control the electronic device 100, or to operate the alarm 110.

2 is a flowchart illustrating an operating principle for multi-party video conferencing according to the present invention.

As referred to herein, the analog video signal and the audio signal input to the camera and the microphone 10 is input through the input unit 20 is configured to be delivered to the image capture board 30 and the image capture board 30 Is configured to convert the received analog video signal and audio signal into a digital form using MPEG-4 compression, and deliver the same to the PC 30. The PC 40 is configured to transmit the transmitted digital image information to the server 60 in real time, and the server organizes the image data sent from each client and retransmits it to each client 50. Each client 50 decompresses the MPEG-4 compressed data transmitted from the server and transmits it to a dedicated program for video conferencing and video lecture of the monitor.

3 is a flowchart illustrating an operating principle for a multi-party video lecture according to the present invention.

As referred to herein, the analog video signal and the audio signal input to the camera and the microphone 10 is input through the input unit 20 is configured to be delivered to the image capture board 30 and the image capture board 30 Is configured to convert the received analog video signal and audio signal into a digital form using MPEG-4 compression, and deliver the same to the PC 40. The PC 40 in which the lecturer's video lecture is compressed by the MPEG-4 method is configured to transmit the delivered digital video information to the server 60 in real time, and the server organizes the video data sent by the lecturer to each client who is a listener ( Resend to 50). Each client 50 decompresses MPEG-4 compressed data transmitted from the server and transmits the decompressed MPEG-4 data to a monitor dedicated program for video lecture.

As described above, the present invention compresses and reproduces a video signal using MPEG-4 video standard compression technology of high compression efficiency to record and store a relatively large amount of video and audio information in a storage medium of limited capacity. In addition, by utilizing the advantages of low-capacity high compression, it is possible to transmit and play video and audio data without difficulty by providing an optimal environment for web-based internet transmission, thereby real-time multi-party video conferencing and video lecture system.

In addition, the video conferencing and video lecture system, which has been in the spotlight in recent years, and the emphasis of the DVR, which is increasing in demand due to the emphasis on security, have developed a video integrated system that incorporates three types of functions using video into one system. It has the advantage of being able to satisfy both integrated and low price, and to avoid duplicate spending by companies or users.

Claims (3)

A digital video recording and reproducing apparatus (DVR) which converts analog video signals and audio signals input to a camera into a digital form, and records and plays them, comprising: an input unit for receiving analog video signals and audio signals, and input analog video signals and audio signals MPEG-4 video capture board that converts signals into digital format and compresses them to MEPG-4 video compression format, and a storage medium for receiving and storing digital video information compressed in MPEG-4 video compression format from the capture board (hard disk). Dedicated program to control speaker, mobile phone, electronic device and alarm by controlling output through motion detection or sensor I / O and MPEG to decompress digital video information stored in storage media in MPEG-4 video compression format. Digital video recording and playback (DVR) using MPEG-4 video compression technology, including -4 dedicated programs Integrated video system with performance. In a multi-party video conferencing system that converts analog video signals and audio signals input to a camera into digital form, transmits and plays back, an input unit for receiving analog video signals and audio signals, and receives input analog video signals and audio signals. MPEG-4 video capture board that converts the data into a MEPG-4 video compression format, and receives and transmits digital video information compressed from the capture board into MPEG-4 video compression format, and MPEG-4 video compression format. A video integration system having a multi-party video conferencing function using MPEG-4 video compression technology, characterized in that it comprises an MPEG-4 dedicated program for decompressing video and audio data transmitted to the system. A multilateral video lecture system that converts analog video signals and audio signals input to a camera into digital form, transmits and plays back, and receives an analog video signal and an audio signal, and receives an analog video signal and an audio signal. MPEG-4 video capture board that converts the data into a MEPG-4 video compression format, and receives and transmits digital video information compressed from the capture board into MPEG-4 video compression format, and MPEG-4 video compression format. Multi-party video using MPEG-4 video compression technology, which includes MPEG-4 dedicated program for decompressing video and audio data transmitted to the system, and including conference-related advanced functions such as whiteboard, electronic payment, and secret meeting. Video integration system with lecture system function.