KR950035395A - Optical cable t. (DS3) channel alignment device for (CATV) distribution centers - Google Patents

Optical cable t. (DS3) channel alignment device for (CATV) distribution centers Download PDF

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Publication number
KR950035395A
KR950035395A KR1019940010683A KR19940010683A KR950035395A KR 950035395 A KR950035395 A KR 950035395A KR 1019940010683 A KR1019940010683 A KR 1019940010683A KR 19940010683 A KR19940010683 A KR 19940010683A KR 950035395 A KR950035395 A KR 950035395A
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KR
South Korea
Prior art keywords
clock
data
receiving
output
control signal
Prior art date
Application number
KR1019940010683A
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Korean (ko)
Other versions
KR970006479B1 (en
Inventor
박상조
강성수
이찬구
Original Assignee
양승택
재단법인 한국전자통신연구소
조백제
한국전기통신공사
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Application filed by 양승택, 재단법인 한국전자통신연구소, 조백제, 한국전기통신공사 filed Critical 양승택
Priority to KR1019940010683A priority Critical patent/KR970006479B1/en
Publication of KR950035395A publication Critical patent/KR950035395A/en
Application granted granted Critical
Publication of KR970006479B1 publication Critical patent/KR970006479B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable
    • H04N7/102—Circuits therefor, e.g. noise reducers, equalisers, amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/38—Arrangements for distribution where lower stations, e.g. receivers, interact with the broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/22—Adaptations for optical transmission

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Optical Communication System (AREA)

Abstract

본 발명은 광 케이블 티.브이(CATV) 분배 센터용 디.에스3(DS3) 채널 정렬 장치에 관한 것으로, DS3선로부호신호로부터 데이타와 동일 위상의 클럭을 추출하여 제어신호를 발생하기 때문에 데이타 값이 연속적으로 들어오더라도, 클릭은 “0”과 “1”을 반복하기 때문에 종래의 기술과 같은 에러가 발생할 경우가 없고, 제어 신호 발생부도 4개의 경우(종래16가지 경우)로 단순화 시켜, 정렬클럭 발생부와 데이타 정렬부의 구성을 간단하게 4 : 1 멀티플렉서로 가능해지는 등의 효과가 있다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a DS3 channel alignment apparatus for a CATV distribution center, which extracts a clock having the same phase as the data from a DS3 line code signal and generates a control signal. Even if this is a continuous input, since the click repeats "0" and "1", there is no error like the prior art, and the control signal generator is also simplified in four cases (conventional 16 cases). The clock generation section and the data alignment section can be easily configured with a 4: 1 multiplexer.

Description

광 케이블 티.브이(CATV)분배센터용, 디.에스.3(DS3)채널 정렬 장치.DS3 channel alignment device for CATV distribution centers.

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

제2도는 본 발명이 적용되는 광 CATV망 구성도, 제3도는 본 발명에 따른 채널 정렬부의 블럭 구성도, 제4도는 본 발명의 파형도.2 is a block diagram of an optical CATV network to which the present invention is applied, FIG. 3 is a block diagram of a channel alignment unit according to the present invention, and FIG. 4 is a waveform diagram of the present invention.

Claims (2)

입력되는 DS3신호를 받아 클럭을 추출하는 DS3디코더(21); 상기 DS3디코더(21)을 통해 추출된 클럭을 입력받아 2분주하여 데이타화하여 출력하는 클럭 2분주수단(23); 상기 DS3디코더(21)을 통해 데이타 출력을 입력받아 래치하는 데이타 입력수단(22);외부에서의 클럭을 입력받아 지연시켜 위상을 갖는 클럭을 생성하는 클럭 지연수단(24);상기 클럭 지연수단(24)과 상기 클럭2분주 수단(23)의 출력을 입력받아 비교하여 출력하는 클럭 래치 비교수단(25); 상기 클럭 래치 및 비교수단(25)으로 부터의 출력을 입력받아 제어 신호를 출력하는 제어신호 발생수단(26); 상기 클럭 지연수단(24)및 상기 제어신호 발생수단(26)으로 부터의 출력을 입력받아 정렬 클럭을 발생시키는 정렬 클럭 발생 수단(27); 및 상기 데이타 래치 수단(22)및 상기 정렬 클럭 발생 수단(27)에 접속되어 상기 정렬 클럭의 하강시간에 데이타를 정렬시키는 데이타 정렬 수단(28)을 구비하는 것을 특징으로 하는 광 케이블 티.브이.(CATV) 분배센터용 디.에스.3(DS3) 채널 정렬 장치.A DS3 decoder 21 which receives the input DS3 signal and extracts a clock; Clock dividing means (23) for receiving the clock extracted through the DS3 decoder (21) and dividing the data into two parts to output data; Data input means 22 for receiving and latching a data output through the DS3 decoder 21; a clock delay means 24 for receiving an external clock to delay and generating a clock having a phase; A clock latch comparing means (25) for receiving an output of the clock (2) and the clock divider (23) and comparing the same; Control signal generating means (26) for receiving an output from the clock latch and comparing means (25) and outputting a control signal; Alignment clock generation means (27) for receiving an output from the clock delay means (24) and the control signal generation means (26) to generate an alignment clock; And data sorting means (28) connected to said data latching means (22) and said sorting clock generating means (27) to align data at the fall time of said sorting clock. (CATV) DS3 channel sorter for distribution centers. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940010683A 1994-05-16 1994-05-16 Image data channel aligning apparatus for optic cable tv distributing center KR970006479B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940010683A KR970006479B1 (en) 1994-05-16 1994-05-16 Image data channel aligning apparatus for optic cable tv distributing center

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940010683A KR970006479B1 (en) 1994-05-16 1994-05-16 Image data channel aligning apparatus for optic cable tv distributing center

Publications (2)

Publication Number Publication Date
KR950035395A true KR950035395A (en) 1995-12-30
KR970006479B1 KR970006479B1 (en) 1997-04-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940010683A KR970006479B1 (en) 1994-05-16 1994-05-16 Image data channel aligning apparatus for optic cable tv distributing center

Country Status (1)

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KR (1) KR970006479B1 (en)

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Publication number Publication date
KR970006479B1 (en) 1997-04-28

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