KR970076297A - Video conferencing system - Google Patents

Video conferencing system Download PDF

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Publication number
KR970076297A
KR970076297A KR1019960017327A KR19960017327A KR970076297A KR 970076297 A KR970076297 A KR 970076297A KR 1019960017327 A KR1019960017327 A KR 1019960017327A KR 19960017327 A KR19960017327 A KR 19960017327A KR 970076297 A KR970076297 A KR 970076297A
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KR
South Korea
Prior art keywords
video
audio
signal
line
processing
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KR1019960017327A
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Korean (ko)
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KR0182466B1 (en
Inventor
이종대
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배순훈
대우전자 주식회사
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Priority to KR1019960017327A priority Critical patent/KR0182466B1/en
Publication of KR970076297A publication Critical patent/KR970076297A/en
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Publication of KR0182466B1 publication Critical patent/KR0182466B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/15—Conference systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/06—Transmission systems characterised by the manner in which the individual colour picture signal components are combined
    • H04N11/12—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only
    • H04N11/14—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable

Abstract

본 발명은 영상회의시스템에 관한 것으로, 텔레비전(TV)신호의 전송에 적절하게 채용되는 동축케이블을 전송매체로 채용하여 동일한 LAN망환경에 접속되는 영상회의 단말기 사이에서는 TV수준의 영상/음성신호의 전송이 가능하도록 하고 상호 다른 LAN망환경 사이에서는 디지탈변환된 영상/음성신호가 전송선로를 매개하여 교환되도록 하기 위해, 음성/영상입력수단(90a, 92)으로부터 입력되는 영상/음성신호를 아날로그신호로 처리하여 교환하는 제1군의 영상회의 단말기(60;60a-60n)와, 그 제1군의 영상회의 단말기(60a-60n)를 동일한 LAN망환경으로 연결하는 통신선로(동축케이블;62), 그 통신선로(62)에 접속되어 상기 아날로그신호를 외부적인 LAN환경에 포함된 제2군의 영상회의 단말기(70a-70n)측으로 전용회선(80)을 매개하여 디지탈신호로서 전송함과 더불어 그 외부적인 LAN망환경에서 상기 전용회선(80)을 매개하여 전송되어지는 디지탈신호를 아날로그신호로서 처리하여 상기 영상회의 단말기(60a-60n)에서 재생되도록 하는 게이트웨이(54)를 구비하여 구성된 것이다.TECHNICAL FIELD The present invention relates to a video conferencing system, and more particularly, to a video conferencing system employing a coaxial cable suitably employed for transmission of a television (TV) signal as a transmission medium, Audio signals input from the audio / video input means 90a and 92 are converted into analog signals in order to allow the digital video / audio signals to be exchanged through the transmission line, (Coaxial cable) 62 for connecting the first group of video conference terminals 60 (60a-60n) for processing and exchanging the first group video conference terminals 60a-60n to the same LAN network environment, And is connected to the communication line 62 to transmit the analog signal as a digital signal through the dedicated line 80 to the second group of video conference terminals 70a to 70n included in the external LAN environment, And a gateway 54 for processing a digital signal transmitted through the leased line 80 in an external LAN network environment as an analog signal to be reproduced in the video conference terminals 60a-60n.

Description

영상회의시스템Video conferencing system

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 일반적인 LAN망에서의 영상회의시스템의 구성을 나타낸 도면, 제2도는 제1도에 도시된 영상회의시스템에 적용되는 대표적인 영상회의 단말기의 블럭구성을 나타낸 도면, 제3도는 본 발명의 바람직한 실시예에 따른 영상회의시스템의 구성을 나타낸 도면, 제4도는 제3도에 도시된 본 발명에 따른 영상회의시스템에 적용되는 대표적인 영상회의 단말기의 블럭구성도.FIG. 1 is a block diagram of a video conferencing system in a typical LAN network, FIG. 2 is a block diagram of a typical video conferencing terminal applied to the video conferencing system shown in FIG. FIG. 4 is a block diagram of a typical video conference system applied to a video conference system according to the present invention shown in FIG.

Claims (4)

음성/영상입력수단(90a,92)으로부터 입력되는 영상/음성신호를 아날로그신호로 처리하여 교환하는 다수의 영상회의 단말수단(60;60a-60n)과, 상기 다수의 영상회의 단말수단(60a-60n)을 LAN망환경으로 연결하는 선로수단(62), 상기 선로수단(62)에 접속되어 상기 아날로그신호를 외부적인 LAN망환경과 연설되는 전용회선(80)상에 디지탈신호로서 전송함과 더불어 그 외부적인 LAN망환경에서 상기 전용회선(80)을 매개하여 전송되어지는 디지탈신호를 아날로그신호로서 처리하여 상기 영상회의 단말수단에서 재생되도록 하는 영상회의서버수단(64)을 구비하여 구성되고, 상기 선로수단(62)은 아날로그 영상/음성신호의 전송을 위한 동축케이블이 채용된 것을 특징으로 하는 영상회의시스템.A plurality of video conference terminal means 60 (60a-60n) for processing and exchanging video / audio signals input from the audio / video input means 90a and 92 into analog signals, and a plurality of video conference terminal means 60a- A line means 62 connected to the line means 62 for transmitting the analog signal as a digital signal on a dedicated line 80 addressed to an external LAN network environment, And a video conference server means (64) for processing the digital signal transmitted through the dedicated line (80) in the external LAN network environment as an analog signal and reproducing the digital signal from the video conference terminal means, Wherein the line means (62) employs a coaxial cable for transmission of analog video / audio signals. 제1항에 있어서, 상기 영상회의 단말수단(60)은 상기 선로수단(62)을 매개하여 아날로그 영상/음성신호의 전송이 행해지도록 각기 영상/음성입력수단(90a,92)에서 입력되는 영상/음성신호를 RF변조처리하는 RF모듈레이터(96)와, 제어유니트(116)의 제어하에 상기 영상/음성신호에 할당되는 상기 채널의 주파수밴드를 리젝트처리하는 주파수밴드리젝터(100) 및, 그 주파수밴드리젝터(100)에 의해 리젝트된 특정한 채널의 주파수대역으로 상기 RF변조된 영상/음성신호를 처리하여 상기 선로수단(62)상에 인가하는 RF컴바이너(94)를 포함하는 것을 특징으로 하는 영상회의시스템.The video / audio terminal unit (60) as claimed in claim 1, wherein the video conference terminal means (60) comprises a video / audio input means (90a, 92) for transmitting analog video / audio signals via the line means (62) A frequency band rejector 100 for rejecting the frequency band of the channel allocated to the video / audio signal under the control of the control unit 116; And an RF combiner 94 for processing the RF-modulated video / audio signal at a frequency band of a specific channel rejected by the band rejector 100 and applying the RF-modulated video / audio signal to the line means 62 Video conferencing system. 제1항 또는 제2항에 있어서, 상기 영상회의 단말수단(60)은 상기 선로수단(62)을 매개하여 수신되는 영상/음성신호의 채널을 선국하는 튜너수단(102), 그 튜너수단(102)에 의해 선국된 채널에서의 영상/음성신호를 IF변환하는 영상/음성IF모듈(104), 상기 IF변환된 음성신호를 재생 처리하여 음성출력수단(90b)에 인가하는 음성처리수단(106), 상기 IF변환된 영상신호를 디코딩처리(R/G/B처리)하는 NTSC디코더(108), 그 NTSC디코딩처리된 영상신호를 모니터(114)상의 화면표시를 위한 VGA신호로 동기변환처리하는 스캔컨버터(110) 및, 상기 스캔컨버터(110)에서의 영상신호를 VGA카드(118)의 지원하에 오버레이처리하여 상기모니터(114)상에 출력되도록 하는 오버레이처리수단(112)이 포함된 것을 특징으로 하는 영상회의 시스템.The terminal according to claim 1 or 2, wherein said video conference terminal means (60) comprises tuner means (102) for tuning a channel of video / audio signals received via said line means (62), tuner means An audio / video IF module 104 for IF-converting the video / audio signal in the channel selected by the channel selection section 106, a sound processing section 106 for reproducing the IF-converted audio signal and applying the reproduced signal to the audio output section 90b, An NTSC decoder 108 for decoding (R / G / B processing) the IF-converted video signal, a scan for synchronously converting the NTSC decoded video signal to a VGA signal for display on the monitor 114 Converter 110 and overlay processing means 112 for overlaying the video signal from the scan converter 110 under the support of the VGA card 118 and outputting the result over the monitor 114. [ Video conference system. 제1항에 있어서, 상기 영상회의서버수단(64)은 상기 선로수단(62)상에 인가된 영상/음성신호에 대해 특정한 주파수밴드의 채널을 할당하여 선국되도록 하는 주파수밴드리젝터 및 튜터수단(120,122)과, 그 튜너수단(122)에 의해 선국된 채널의 영상/음성신호를 IF변환처리하는 영상/음성IF모듈(124), 상기 IF변환된 영상/음성신호를 디지탈 엔코딩하는 비디오/오디오엔코더(126, 128), 상기 엔코딩된 영상/음성데이터를 상기 외부적인 LAN망환경측으로 전송하거나 그 외부적인 LAN망환경측에서 전송되어지는 영상/음성데이터의 재생을 위한 데이터프레임구조로 처리하는 시스템레이어 MUX/DMUX(130), 상기 데이터프레임구조의 영상/음성데이터의 교환을 위한 전송회선(80)에 대한 데이터인터페이싱을 위한 전용망 인터페이스(132)를 포함함과 더불어, 그 전용망 인터페이스(132)를 매개하여 수신되는 영상/음성데이타를 아날로그 디코딩처리하는 비디오/오디오디코더(134, 136), 상기 디코딩된 영상신호와 음성신호를 RF변조처리하는 RF모듈레이터(138), 상기 RF변조된 영상/음성신호를 상기 주파수밴드리젝터(120)에 의해 리젝트된 채널의 주파수대역으로 처리하는 RF컴바이너(140)를 포함하여 구성된 것을 특징으로 하는 영상회의시스템.The apparatus of claim 1, wherein the video conference server means (64) comprises a frequency band rejector and a tutor means (120, 122) for allocating a channel of a specific frequency band to the selected video / audio signal on the line means A video / audio IF module 124 for IF-converting the video / audio signal of the channel selected by the tuner means 122, a video / audio encoder for digitally encoding the IF-converted video / audio signal 126, 128), a system layer MUX for transmitting the encoded video / audio data to the external LAN network environment or a data frame structure for reproducing video / audio data transmitted from the external LAN network environment / DMUX 130, a dedicated network interface 132 for data interfacing to the transmission line 80 for exchanging video / audio data of the data frame structure, A video / audio decoder (134, 136) for analog decoding the received video / audio data via the antenna 132, an RF modulator 138 for RF modulating the decoded video signal and the audio signal, And an RF combiner (140) for processing a video / audio signal into a frequency band of a channel rejected by the frequency band rejector (120). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960017327A 1996-05-22 1996-05-22 Video conference system KR0182466B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000050081A (en) * 2000-05-15 2000-08-05 고성욱 remote video conference system using a LAN

Families Citing this family (2)

* Cited by examiner, † Cited by third party
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KR20140038201A (en) * 2012-09-20 2014-03-28 (주)디티브이인터랙티브 A cctv image management cell and cctv image management system
KR20140038209A (en) * 2012-09-20 2014-03-28 (주)디티브이인터랙티브 A camera for taking a movie for a cctv, an image compression and transmission device for a cctv, an image management cell for a cctv, a relay cell for relaying cctv image signal, and an image management system for a cctv

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000050081A (en) * 2000-05-15 2000-08-05 고성욱 remote video conference system using a LAN

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