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KR960036652A - Custom Video Network Systems - Google Patents

Custom Video Network Systems Download PDF

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Publication number
KR960036652A
KR960036652A KR1019950006423A KR19950006423A KR960036652A KR 960036652 A KR960036652 A KR 960036652A KR 1019950006423 A KR1019950006423 A KR 1019950006423A KR 19950006423 A KR19950006423 A KR 19950006423A KR 960036652 A KR960036652 A KR 960036652A
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KR
South Korea
Prior art keywords
data
video
subscriber
channel
signal
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Application number
KR1019950006423A
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Korean (ko)
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KR0173009B1 (en
Inventor
최용식
Original Assignee
김주용
현대전자산업 주식회사
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Priority to KR1019950006423A priority Critical patent/KR0173009B1/en
Publication of KR960036652A publication Critical patent/KR960036652A/en
Application granted granted Critical
Publication of KR0173009B1 publication Critical patent/KR0173009B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/478—Supplemental services, e.g. displaying phone caller identification, shopping application
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/22—Arrangements affording multiple use of the transmission path using time-division multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H04N21/2365—Multiplexing of several video streams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4347—Demultiplexing of several video streams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6118—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving cable transmission, e.g. using a cable modem
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2207/00—Type of exchange or network, i.e. telephonic medium, in which the telephonic communication takes place
    • H04M2207/08—ISDN systems

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

본 발명은 압축된 동화상 디지탈 비디오 데이타를 이용자에게 선택권을 최대한 부여하는 서비스에 관한 것으로, 비디오를 보는 도중에 전화를 걸거나 받을 수 있으며, 더불어 협대역 종합정보통신망(Integrated Service Digital Network ; 이하 ISDN 이라 칭함) 서비스도 동시에 제공 받을 수 있도록 하는 주문자 요구형 비디오 네트워크 시스템에 관한 것으로, 종래 주문자 요구형 비디오 네트워크 시스템의 구현은 가입자 망의 매체가 전화선이었기 때문에 비대칭 디지탈 가입 회선(ADSL) 방식을 사용해야 했는데, 이를 이용하게 되면 VOD 서비스와 전화통화의 서비스가 단일회선으로 동시에 가능하나, 전화선의 신호 감쇠 특성을 보상하기 위한 중계기가 필수적이고, ADSL 방식의 모뎀 가격이 고가이여서 경제적이지 못한 문제점이 발생하므로, 본 발명에서는 가입자 망의 매체를 광섬유로 하여 신호 열화 및 유지 보수의 어려움을 해결하고, 전화 신호를 디지탈 신호로 변조시킨 후 디지탈 영상 신호와 함께 시간 분할 다중화(TDM) 방식에 의한 풀 디지탈 방식을 이용하여 송수신함으로써 일반 전화 가입자용 음성신호도 디지탈로 양방향 통신이 가능하게 되고, ISDN 서비스도 가능하고, 동시에 광섬유케이블을 이용하여 전송로를 구현하기 때문에 동화상 디지탈 비디오 서비스도 가능하게 되어, 대역폭 증가에 따른 서비스 제한을 거의 없애고 미래 영상 정보 통신으로의 진화를 가능하게 한다.The present invention relates to a service that gives users maximum choice of compressed moving picture digital video data. The present invention provides a method of making or receiving a call while viewing a video, and also referred to as a narrowband integrated service digital network (ISDN). The present invention relates to an on-demand video network system that can simultaneously provide a service. In the conventional implementation of an on-demand video network system, an asymmetric digital subscribing line (ADSL) method was used because the medium of the subscriber network was a telephone line. In this case, the VOD service and the telephone call service can be simultaneously performed on a single line, but a repeater is necessary to compensate for the signal attenuation characteristic of the telephone line, and an ADSL type modem is expensive, causing problems that are not economical. Subscriber network Solves the problem of signal degradation and maintenance by using optical fiber as a medium, and modulates a telephone signal into a digital signal, and then transmits and receives a digital signal using a full digital method by time division multiplexing (TDM). Voice signals for subscribers can also be digitally bi-directionally communicated, ISDN service is possible, and at the same time, the transmission path using fiber optic cable enables moving picture digital video service, eliminating service restrictions due to increased bandwidth. Enable evolution to future video and information communication.

Description

주문자 요구형 비디오 네트워크 시스템Custom Video Network Systems

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명 주문자 요구형 비디오 네트워크 시스템의 구성 블럭도.1 is a configuration block diagram of a user-customized video network system of the present invention.

Claims (4)

주문자 요구형 비디오 네트워크 시스템을 구성함에 있어서, 광섬유 케이블(15)을 이용하여 교환기(1)에 의한 일반 전화 서비스 및 협대역 ISDN 서비스와, 비디오 서버(10)에 의한 동화상디지탈 비디오 데이타를 각각의 가입자로 분배하는 분배 정치(30)와, 분배 장치(30)에 위한 서비스 데이타를 입력하여 가입자들에게 서비스를 하도록 하는 가입자장치(40)로 구성됨을 특징으로 하는 주문자 요구형 비디오 네트워크 시스템.In constructing an on-demand video network system, a subscriber uses a fiber-optic cable 15 to provide a general telephone service and a narrowband ISDN service by the switch 1 and a moving picture digital video data by the video server 10 to each subscriber. And a subscriber station (40) for providing service to subscribers by inputting service data for the distribution device (30). 제1항에 있어서, 상기 분배 장치(30)의 교환기(1)로부터 일반 전화기 서비스를 위한 아날로그 신호인 B채널 신호와 협대역 ISDN 서비스를 위한 2B+D채널 신호를 디지탈 전송 방식의 기본 포맷인 2Mbps로 재구성하는 B채널 정합부(2) 및 2B+D채널 정합부(3)와, 상기 B채널 정합부(2)와 2B+D채널 정합부(3)의 신호를 각각 입력하여 타임 스위칭 방법으로 각각 출력하는 2B+D채널 맵퍼/디맵퍼(4)및 B채널 맵퍼/디맵퍼(5)와, 송수신되는 신호를 동기시키는 클럭을 발생하는 시스템 동기 클럭 발생부(6)와, 압축된 동화상 디지탈 비디오 데이타를 저장하는 비디오 서버(10)의 수개 출력 포트를 통해 출력되는 비디오 데이타를 입력하여 가입자를 연결해주는 분배 스위치(11)와, 상기 분배 스위치(11)에 의해 입력된 비디오 데이타를 12가입자분으로 다중화하는 45M 다중화부(12)와, 가입자가 원하는 비디오 채널신호를 입력하여 비디오 서버(10)로 출력하면서 각 구성 회로들을 유지 관리하는 유지보수 및 비디오 신호 정합부(13)와, 하향 데이타일 경우 상기 2B+D채널 맵퍼/디맵퍼(4)와 B채널 맵퍼/디맵퍼(3) 및 45M 다중화부(12)로부터 데이타를 입력하여 준동기 계위(PDH)방식의 다중 구조인 동기식 송신 신호-1(STS-1) 데이타 3개로 규격화하고 상향 데이타일 경우 가입자로부터 받은 ISDN, 일반전화 및 비디오 채널 선택 신호에 관한 데이타를 오버 헤드 통로를 통하여 상기 2B+D채널 맵퍼/디맵퍼(4)와 B채널 맵퍼/디맵퍼(5) 및 유지관리 및 비디오신호 정합부(13)로 각각 출력하는 각각의 51M 프레이머/리프레이머(7)(8)(9)와, 및 하향 데이타일 경우 상기 각각의 동기식 송신 신호-1(STS-1) 데이타 3개를 시간분할 다중화(TDM) 방식을 이용하여 동기식 송신 모듈-1(STM-1)데이타 스트림으로 변환시키면서 전기신호를 광신호로 변환시키고, 상향 데이타일 경우 3개의 데이타로 역다중화하여 각각의 51M 프레이머/리프레이머(7)(8)(9)로 가입자 선택 신호를 출력하는 155M 광전송부(14)를 포함하여 이루어짐을 특징으로 하는 주문자 요구형 비디오 네트워크 시스템.2 Mbps according to claim 1, wherein the B channel signal, which is an analog signal for general telephone service, and the 2B + D channel signal for narrowband ISDN service, from the switch 1 of the distribution device 30, is a basic format of a digital transmission scheme. The B channel matching unit 2 and the 2B + D channel matching unit 3 and the B channel matching unit 2 and the 2B + D channel matching unit 3 are reconfigured into 2B + D channel mapper / demapper 4 and B channel mapper / demapper 5 respectively outputted, a system synchronization clock generator 6 generating a clock for synchronizing transmitted / received signals, and a compressed moving picture digital. A distribution switch 11 for connecting subscribers by inputting video data output through several output ports of the video server 10 storing video data, and 12 subscribers of the video data inputted by the distribution switch 11. 45M multiplexer 12 multiplexed with A maintenance and video signal matching unit 13 for inputting and outputting a desired video channel signal to the video server 10 and maintaining the respective circuits, and the 2B + D channel mapper / demapper 4 for downlink data. Data input from the B-channel mapper / demapper (3) and the 45M multiplexer (12) and standardized into three synchronous transmission signal-1 (STS-1) data, which is a multi-synchronized hierarchy (PDH) scheme. In case of data, the 2B + D channel mapper / demapper (4) and the B channel mapper / demapper (5), maintenance and management of the ISDN, landline, and video channel selection signals received from the subscriber through the overhead passage. Each 51M framer / reframer (7) (8) (9) output to the video signal matching section 13, and each of the three synchronous transmission signal-1 (STS-1) data for downlink data. Transmission Time Synchronization Using Time Division Multiplexing (TDM) Converts electrical signals into optical signals while converting into -1 (STM-1) data streams, and demultiplexes them into three data for upstream data, thereby subscribing to each 51M framer / reframer (7) (8) (9) And a 155M optical transmitter (14) for outputting a selection signal. 제1항에 있어서, 상기 가입자 장치(40)는 상기 분배 장치(30)에서 출력되는 데이타를 광섬유케이블(15)을 통해 입력하여 스플리터(16)에서 12가입자가 공유할 수 있도록 분배된 데이타를 전기신호로 변환시킨 뒤, 비트 스트림 데이타 3개로 역다중화하고, 상향 데이타일 경우 광신호로 변환시키면서 하나의 데이타스트림으로 변환시켜 상기 스플리터(16)로 출력하는 155M로 광전송부(17)와, 상기 155M 광전송부(17)의 데이타를 송수신하면서 오버 헤드 비트를 이용하여 2B+D채널 ISDN과 일반 전화기의 12가입자분의 상하향 데이타 그리고 12가입자분의 비트 스트림의 VOD용 비디오 하향 데이타의 통로를 담당하는 각각의 51M프레이머/리프레이머(18)(19)(20)와, 상기 12가입자분의 ISDN용 상하향 데이타 중 1가입자분의 데이타를 ISDN 전화기(26)로 송수신하는 S인터페이스를 담당하는 2B+D채널 정합부(21)와, 상기 12가입자분의 일반전화 가입자용 디지탈 음성 데이타를 1가입자분으로 선택한 후 아날로그 변환시키면서 팁/링(Tip Ring)인터페이스를 담당하는 B채널 정합부(22)와, 상기 VOD용 비디오 하향 데이타를 입력하여 역다중화시킨 후 1가입자분의 비디오 데이타를 출력하는 45M 역다중화부(24)와, 상기 45M 역다중화부(24)의 데이타를 입력하여 데이타의 압축을 푸는 동화상처리1(MPEG1) 디코더(25-1)와, 상기 동화상처리1 디코더(25-1)로부터 전송되어온 텔레비젼 신호를 아날로그 신호로 변환시켜 일반 텔레비젼 가입자가 텔레비젼(28)을 통해 비디오를 시청하도록 하는 엔티에스시(NTSC) 인코더(25-2)와, 및 상기 회로들의 유지보수 관련 상하향 인터페이스 담당 및 비디오 채널선택 상향 데이타인터페이스를 담당하는 유지보수 및 비디오신호 정합부(23)를 포함하여 이루어지는 가입자 장치로 구성됨을 특징으로 하는 주문자 요구형 비디오 네트워크 시스템.2. The subscriber device (40) according to claim 1, wherein the subscriber device (40) inputs data output from the distribution device (30) through the optical fiber cable (15) to post the distributed data so that the 12 subscribers can share in the splitter (16). After converting into a signal, demultiplexing into three bit stream data, and converting it into an optical signal in the case of upstream data, converting it into one data stream and outputting the data to the splitter 16 at 155M and the 155M Receiving data from the optical transmission unit 17, each of the two bits + D channel ISDN and up and down data for 12 subscribers and 12 bit subscriber VOD video downlink data through the overhead bit using the overhead bits, respectively 51M framer / reframer (18) (19) and (20), and an S-interface for transmitting and receiving data for one subscriber among IS12 up / down data for 12 subscribers to ISDN telephone (26). 2B + D channel matching unit 21 and B-channel matching unit in charge of a tip / ring interface while converting the digital voice data for 12 subscribers into one subscriber and converting the analog voice data into one subscriber. 22) and 45M demultiplexer 24 for inputting and demultiplexing the VOD video downlink data and outputting video data for one subscriber, and data of the 45M demultiplexer 24 for inputting the data. A decompressed moving image processing 1 (MPEG1) decoder 25-1 and a television signal transmitted from the moving image processing 1 decoder 25-1 are converted into analog signals so that a general television subscriber can display the video through the television 28. NTSC encoder 25-2 for viewing, and maintenance and video signals in charge of maintenance of the circuits and up and down interface associated with maintenance and video channel selection upstream data interface. And a subscriber unit comprising a matching unit (23). 제2 내지 3항에 있어서, 상기 가입자 장치(40)의 45M 역다중화부(24)에서 역다중화된 동영상디지탈 비디오 데이타를 디코딩하는 디코더를 동영상처리2(MPEG2) 디코더(25A)로 하고, 분배 장치(30)에서 동화상 디지탈 비디오 데이타를 각각 6가입자분으로 다중화하는 45M 다주오하부를 두개(12A)(12B)로 구성함을 특징으로 하는 주문자 요구형 비디오 네트워크 시스템.4. The distribution apparatus according to claim 2, wherein a decoder for decoding the demultiplexed moving picture digital video data by the 45M demultiplexing unit 24 of the subscriber device 40 is a moving picture processing 2 (MPEG2) decoder 25A. A customer-demand video network system, characterized in that (30) comprises two (12A) and (12B) 45M multi-layer parts for multiplexing moving picture digital video data into six subscribers, respectively. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950006423A 1995-03-24 1995-03-24 Video on demand metwork system KR0173009B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100451457B1 (en) * 2002-02-27 2004-10-06 (주)씨앤에스 테크놀로지 Video phone by using cable modem
KR100429174B1 (en) * 1996-12-27 2006-09-14 엘지전자 주식회사 Internet communication system and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100429174B1 (en) * 1996-12-27 2006-09-14 엘지전자 주식회사 Internet communication system and method
KR100451457B1 (en) * 2002-02-27 2004-10-06 (주)씨앤에스 테크놀로지 Video phone by using cable modem

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