[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

KR960028411A - Multiple / Demultiplex Devices for Subscriber Access to Phone Optical Cable Televisions - Google Patents

Multiple / Demultiplex Devices for Subscriber Access to Phone Optical Cable Televisions Download PDF

Info

Publication number
KR960028411A
KR960028411A KR1019940036131A KR19940036131A KR960028411A KR 960028411 A KR960028411 A KR 960028411A KR 1019940036131 A KR1019940036131 A KR 1019940036131A KR 19940036131 A KR19940036131 A KR 19940036131A KR 960028411 A KR960028411 A KR 960028411A
Authority
KR
South Korea
Prior art keywords
signal
bit
unit
frame
predetermined
Prior art date
Application number
KR1019940036131A
Other languages
Korean (ko)
Other versions
KR0154568B1 (en
Inventor
김효중
이석훈
강성수
Original Assignee
양승택
재단법인 한국전자통신연구소
조백제
한국전기통신공사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 양승택, 재단법인 한국전자통신연구소, 조백제, 한국전기통신공사 filed Critical 양승택
Priority to KR1019940036131A priority Critical patent/KR0154568B1/en
Publication of KR960028411A publication Critical patent/KR960028411A/en
Application granted granted Critical
Publication of KR0154568B1 publication Critical patent/KR0154568B1/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/22Adaptations for optical transmission
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H20/00Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65Arrangements characterised by transmission systems for broadcast
    • H04H20/76Wired systems
    • H04H20/77Wired systems using carrier waves
    • H04H20/78CATV [Community Antenna Television] systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/10Adaptations for transmission by electrical cable
    • H04N7/102Circuits therefor, e.g. noise reducers, equalisers, amplifiers
    • H04N7/104Switchers or splitters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/10Adaptations for transmission by electrical cable
    • H04N7/106Adaptations for transmission by electrical cable for domestic distribution
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/16Analogue secrecy systems; Analogue subscription systems
    • H04N7/167Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/1675Providing digital key or authorisation information for generation or regeneration of the scrambling sequence

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Security & Cryptography (AREA)
  • Optical Communication System (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

본 발명은 내부신호를 다중화하여 소정 속도의 데이터를 발생시키는 다중화수단(11); 및 다수의 가입자로부터 전송되는 저 속의 소정 데이터를 내부신호로 역다중화하는 역다중화수단(12)을 구비하는 것을 특징으로 하여, 한 개의 155.52Mb/s의 신호로서 3 가입자가 사용가능하도록하였으며, 상향신호로는 25.92Mb/s로 속도를 낮추어 3 가입자가 공동으로 사용하게 함으로써 신호채널의 가용성을 높였을 뿐만 아니라 비용의 절감이 가능하도록하는 효과가 있으며, 또한 다중화 및 역다중화장치를 하나로 묶었을 뿐만 아니라 3 가입자용을 한 개의 집적소자로 제작하여 신뢰성을 높일 수 있도록함으로써, 비교적 소형화가 가능하도록하는 효과가 있는 폰(PON) 광 케이블텔레비젼의 가입자 접속을 위한 다중/역다중 장치에 관한 것이다.The present invention provides multiplexing means (11) for multiplexing internal signals to generate data of a predetermined rate; And demultiplexing means (12) for demultiplexing a predetermined number of low-speed data transmitted from a plurality of subscribers into an internal signal, so that three subscribers are available as one 155.52Mb / s signal. By lowering the speed to 25.92Mb / s, the three subscribers can use the system jointly, which not only increases the availability of the signal channel but also reduces the cost, and also combines the multiplexing and demultiplexing devices into one. Rather, the present invention relates to a multiple / demultiplex device for subscriber connection of a PON optical cable television, which has an effect of allowing a relatively small size by increasing reliability by manufacturing three subscribers in one integrated device.

Description

폰 광 케이블텔레비젼의 가입자 접속을 위한 다중/역다중 장치Multiple / Demultiplex Devices for Subscriber Access to Phone Optical Cable Televisions

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 따른 155.52Mb/s 다중화부 및 25.92Mb/s 역다중화부의 블럭구성도, 제2도는 제1도의 155.52Mb/s 다중화부의 하부 기능블럭도, 제3도는 제1도의 25.92Mb/s 역다중화부의 하부 기능블럭도.1 is a block diagram of a 155.52Mb / s multiplexer and a 25.92Mb / s demultiplexer according to the present invention, FIG. 2 is a lower functional block diagram of a 155.52Mb / s multiplexer of FIG. 1, and FIG. / s The lower functional block of the demultiplexer.

Claims (8)

내부신호를 다중화하여 소정 속도의 데이터를 발생시키는 다중화수단(11); 및 다수의 가입자로부터 전송되는 저속의 소정 데이터를 내부신호로 역다중화하는 역다중화수단(12)을 구비하는 것을 특징으로 하는 폰(PON) 광케이블텔레비젼의 가입자 접속을 위한 다중/역다중 장치.Multiplexing means (11) for multiplexing internal signals to generate data of a predetermined rate; And demultiplexing means (12) for demultiplexing predetermined low-speed data transmitted from a plurality of subscribers into an internal signal. 제1항에 있어서, 상기 다중화수단(11)은, 입력받는 영상(DS3)신호(44.736Mb/s)의 경로상에서의 위상변동을 제거하여 다중화장치에서 사용하는 클럭에 정렬시키는 위상정렬부(21); 신호 프레임을 구성하기 위해 필요한 조정신호를 생성하는 주조정신호생성부(22); 소정 클릭을 발생시키는 클럭생성부(23); 상기 조정신호생성부(22)에 연결되어 프레임워드를 생성하는 프레임워드생성부(24); 상기 위상정렬부(21)의 출력을 소정 속도로 속도변화하는 제1속도변환부(25); 폴링신호를 포함하는 소정 내부신호를 소정 속도로 속도변환을 하는 제2속도변환부(26, 27); 상기 프레임워드와 같이 예정된 소정 코드를 생성하는 채널넘버생성부(28); 예정된 소정 클럭을 생성하는 클럭생성부(23, 29); 상기 프레임워드 생성부, 제1 및 제2속도변환부, 채널넘버생성부(28)의 출력에 따라 프레임을 구성하며, 프레임워드를 제외한 부분에 대해 암호화하는 프레임 생성/암호화부(210); 및 상기 프레임 생성/암호화부(210)에 연결되어 프레임워드를 제외한 부분에 대하여 패리티를 검사하여 생성하는 패리티 생성부(211)를 구비하는 다수개의 프레이머와, 상기 프레이머 각각으로 부터 출력되는 프레임을 다중화하는 다중화부(212)를 구비하는 것을 특징으로 하는 폰(PON) 광 케이블텔레비젼의 가입자 접속을 위한 다중/역다중 장치.The phase aligning unit (21) according to claim 1, wherein the multiplexing means (11) removes a phase shift on a path of an input image (DS3) signal (44.736 Mb / s) and aligns it with a clock used in the multiplexing apparatus. ); A main adjustment signal generation section 22 for generating an adjustment signal necessary for constructing a signal frame; A clock generator 23 generating a predetermined click; A frame word generator 24 connected to the adjustment signal generator 22 to generate a frame word; A first speed converter 25 for changing the speed of the phase aligner 21 at a predetermined speed; Second speed converters 26 and 27 for speed converting a predetermined internal signal including a polling signal at a predetermined speed; A channel number generator 28 for generating a predetermined code such as the frameword; Clock generators 23 and 29 for generating a predetermined predetermined clock; A frame generation / encryption unit 210 which constructs a frame according to the output of the frameword generation unit, the first and second speed conversion units, and the channel number generation unit 28, and encrypts a portion other than the frameword; And a parity generator 211 connected to the frame generation / encryption unit 210 to check and generate parity for a portion excluding a frame word, and multiplex a frame output from each of the framers. A multiplexing / demultiplexing device for subscriber access of a PON optical cable television, comprising: a multiplexing unit 212. 제2항에 있어서, 상기 위상정렬부(21)는, 소정 간격으로 주기적으로 신호의 위상을 점검하도록 구성되는 것을 특징으로 하는 폰(PON) 광 케이블텔레비젼의 가입자 접속을 위한 다중/역다중 장치.3. The multiple / demultiplex apparatus for subscriber connection of a PON optical cable television according to claim 2, wherein the phase aligning unit (21) is configured to periodically check the phase of the signal at predetermined intervals. 제1항에 있어서, 상기 역다중화수단(12)은, 폴링신호를 생성하는 폴링신호 생성부(31); 가입자로부터 전송되는 신호의 경로차로 인한 위상변동을 제거하여 신호의 위상을 내부 클럭에 정렬시키는 비트동기부(32); 데이터 프레임을 역다중화하는데 필요한 조정신호를 생성하는 조정신호생성부(33); 상기 비트동기부에 연결되어 프레임워드를 찾고, 프레임동기를 확인하는 동기 및 안정화부(36); 상기 비트동기부에 연결되어 가입자로부터 암호화되어 오는 신호를 해석하는 암호해석부(37); 상기 암호해석부와, 동기 및 안정화부에 연결되는 가입자로부터 온 신호중에서 프레임워드를 제외한 부분에 대해서 패리티를 검사해서 에러발생시 경보신호를 출력하는 패리티 에러 검사부(34); 상기 동기 및 안정화부에 연결되어 프레임동기가 상실된 상태에서 소정 시간 이상 경과되면 신호상실 경보를 발생하는 신호상실에러검사부(35); 및 상기 암호해석부와, 동기 및 안정화부에 연결되어 소정 내부신호를 검출하여 소정 속도로 속도변환시키는 제3속도변환부(38, 39, 310, 311)를 구비하는 것을 특징으로 하는 폰(PON) 광 케이블텔레비젼의 가입자 접속을 위한 다중/역다중 장치.2. The apparatus of claim 1, wherein the demultiplexing means (12) comprises: a polling signal generator (31) for generating a polling signal; A bit synchronization unit 32 for aligning a phase of the signal with an internal clock by removing phase shift due to a path difference of a signal transmitted from a subscriber; An adjustment signal generation section 33 for generating an adjustment signal for demultiplexing the data frame; A synchronizing and stabilizing unit 36 connected to the bit synchronizing unit to find a frame word and confirming frame synchronizing; A cryptographic analysis unit (37) which is connected to the bit synchronization unit and analyzes a signal encrypted from a subscriber; A parity error check unit (34) for checking parity of a portion of signals from subscribers connected to the cipher analysis unit and the synchronization and stabilization unit except for a frame word and outputting an alarm signal when an error occurs; A signal loss error inspection unit 35 connected to the synchronization and stabilization unit and generating a signal loss alarm when a predetermined time elapses in a state where frame synchronization is lost; And a third speed converter (38, 39, 310, 311) connected to the encryption analysis unit and the synchronization and stabilization unit for detecting a predetermined internal signal and converting the speed at a predetermined speed. ) Multi / demultiplex device for subscriber access of optical cable television. 제4항에 있어서, 비트동기부(32)는, 비트동기에서 맞추어진 위상으로 찾게되면 그 위상을 계속 유지하고 프레임동기가 상실되면 다스 비트동기의 동작이 되도록 구성되는 것을 특징으로 하는 폰(PON) 광 케이블텔레비젼의 가입자 접속을 위한 다중/역다중 장치.5. The phone (PON) according to claim 4, wherein the bit synchronization unit 32 is configured to maintain the phase when it finds a phase matched in the bit synchronization and to operate a dozen bit synchronization when the frame synchronization is lost. ) Multi / demultiplex device for subscriber access of optical cable television. 제2항에 있어서, 상기 프레임 생성/암호부와(210)에서 생성되는 프레임은, 12비트의 프레임워드, 12비트의 채널넘버, 32비트의 2.048Mb/s 신호, 3비트의 64Mb/s 신호, 1비트의 패리티비트 및 699 비트의 DS3신호로 구성되고, 51비트의 예비비트를 포함하도록 구성되는 것을 특징으로 하는 폰(PON) 광 케이블텔레비젼의 가입자 접속을 위한 다중/역다중 장치.The frame generated by the frame generation / encryption unit 210 includes a 12-bit frameword, a 12-bit channel number, a 32-bit 2.048 Mb / s signal, and a 3-bit 64 Mb / s signal. And a parity bit of 1 bit and a DS3 signal of 699 bits, and are configured to include 51 bits of spare bits. 제4항에 있어서, 가입자로부터 전송되는 신호는, 3가입자의 신호가 섞여 있으며, 한 가입자에는 12비트의 프레임워드, 192비트의 B채널신호, 192비트의 2B+D신호, 6비트의 채널선택신호, 6비트의 유지보수신호, 6비트의 패리티정보, 10비트의 무효신호 및 386비트의 가드타임을 가지며, 전체 신호 프레임이 2430비트가 되도록 구성되는 것을 특징으로 하는 폰(PON) 광 케이블텔레비젼의 가입자 접속을 위한 다중/역다중 장치.5. A signal transmitted from a subscriber according to claim 4, wherein a signal of three subscribers is mixed, and one subscriber has a 12-bit frameword, a 192-bit B-channel signal, a 192-bit 2B + D signal, and a 6-bit channel selection. PON optical cable television having a signal, 6-bit maintenance signal, 6-bit parity information, 10-bit invalid signal, and 386-bit guard time, so that the entire signal frame is 2430 bits. / Demultiplexer for subscriber access of a mobile station. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940036131A 1994-12-23 1994-12-23 Multiplexer/demultiplexer for subscriber's connection of manual optical communication network cable television KR0154568B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940036131A KR0154568B1 (en) 1994-12-23 1994-12-23 Multiplexer/demultiplexer for subscriber's connection of manual optical communication network cable television

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940036131A KR0154568B1 (en) 1994-12-23 1994-12-23 Multiplexer/demultiplexer for subscriber's connection of manual optical communication network cable television

Publications (2)

Publication Number Publication Date
KR960028411A true KR960028411A (en) 1996-07-22
KR0154568B1 KR0154568B1 (en) 1998-11-16

Family

ID=19403017

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940036131A KR0154568B1 (en) 1994-12-23 1994-12-23 Multiplexer/demultiplexer for subscriber's connection of manual optical communication network cable television

Country Status (1)

Country Link
KR (1) KR0154568B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2742616B1 (en) * 1995-12-18 1998-01-09 Cit Alcatel ENCRYPTION DEVICE AND ENCRYPTION DEVICE OF INFORMATION TRANSPORTED BY CELLS WITH ASYNCHRONOUS TRANSFER MODE

Also Published As

Publication number Publication date
KR0154568B1 (en) 1998-11-16

Similar Documents

Publication Publication Date Title
TW416188B (en) Time division multiplexing expansion subsystem
US8000351B2 (en) Source synchronous link with clock recovery and bit skew alignment
US7561801B2 (en) Optical transceiver with electrical ring distribution interface
EP0533091B1 (en) Parallel transmission method
JPH077935B2 (en) Time division demultiplexer
JP3947417B2 (en) Wavelength division multiplexing system
JP6525004B2 (en) Multicarrier optical transmitter, multicarrier optical receiver, and multicarrier optical transmission method
KR960028411A (en) Multiple / Demultiplex Devices for Subscriber Access to Phone Optical Cable Televisions
US4302839A (en) Multiplex unit with means for responding to signal loss in one or more channels
US4792949A (en) Service channel circuit for multiplexed telecommunications transmission systems
JP6033468B2 (en) Optical transmission device, optical transmission system, and communication method
KR0145595B1 (en) 1.2 giga optic transmitting device using multiplexing/demultiplexing of 51 mega frame
US7729615B1 (en) Method for transmitting overhead information for wavelength division multiplex networks for fibre-optic information transmission
US5995257A (en) Add/drop multiplexer for multiwavelength pulse oriented optical communications systems
US7447238B2 (en) Method for compensating for internal delays within each node and transmission delays between the nodes
JP4661471B2 (en) Data transmission system and communication terminal device
US7609968B2 (en) Secure analog communication system using time and wavelength scrambling
KR0176081B1 (en) Apparatus for absorbing the jiter of a video data and transmitting a video signal in distributive switching network of an optic cable television
KR100205014B1 (en) Device for implementing the function of the vc-11 and tug-2 in the sdh
KR19990053398A (en) Optical transmission device that accepts any combination of dependent signals
KR970002705B1 (en) Frame mapping/demapping for n-isdn
KR100198961B1 (en) Multiplexer of synchronizing optical transmission system
JPS6310833A (en) Time division multiplexing separation device
KR0179505B1 (en) Apparatus for lining up frame of tu signal for low-speed switching
JP2000004207A (en) Method and device for time division multiplex transmission

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20070702

Year of fee payment: 10

LAPS Lapse due to unpaid annual fee