KR960013078A - Optical cable T.V. Synchronization and clock generator for clock switching in distribution center of CATV network - Google Patents
Optical cable T.V. Synchronization and clock generator for clock switching in distribution center of CATV network Download PDFInfo
- Publication number
- KR960013078A KR960013078A KR1019940024373A KR19940024373A KR960013078A KR 960013078 A KR960013078 A KR 960013078A KR 1019940024373 A KR1019940024373 A KR 1019940024373A KR 19940024373 A KR19940024373 A KR 19940024373A KR 960013078 A KR960013078 A KR 960013078A
- Authority
- KR
- South Korea
- Prior art keywords
- clock
- dependent
- subordinate
- data
- signal
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 6
- 230000001419 dependent effect Effects 0.000 claims 14
- 238000000034 method Methods 0.000 claims 1
- 239000013307 optical fiber Substances 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
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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
- H04N7/106—Adaptations for transmission by electrical cable for domestic distribution
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
- H04N5/06—Generation of synchronising signals
-
- 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
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/22—Adaptations for optical transmission
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Optical Communication System (AREA)
Abstract
본 발명은 광케이블 티.브이.(CATV)망에서의 분배 센터내 클럭 절체 장치에 관한 것으로, 중심국내 시스템 기준 클럭을 발생시키는 동기 장치에서 기준 신호 DS3를 발생시킬 때 약속된 데이터를 엔코딩시켜, 분배센터내의 종속 클럭 발생기에서 DS3 기준신호에서 데이터를 디코딩하여 그 데이터값이 일치할 때 종속 기준신호로 기준 신호를 인지하고 이것에 의해 클럭 절체가 이루어지도록 한 분배 센터내 클럭 절체 장치이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clock switching device in a distribution center in an optical cable T.V. (CATV) network, which encodes and distributes data promised when generating a reference signal DS3 in a synchronization device that generates a system reference clock in a central station. The slave clock generator in the center decodes the data from the DS3 reference signal, and when the data values coincide with the reference signal as the slave reference signal, thereby switching the clock in the distribution center.
Description
[도면의 간단한 설명][Brief Description of Drawings]
제1도는 본 발명이 적용되는 광 CATV 동기망 구성도.1 is an optical CATV synchronization network configuration to which the present invention is applied.
제2도는 본 발명에 따른 동기 장치의 블록 구성도.2 is a block diagram of a synchronization device according to the present invention.
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940024373A KR0135220B1 (en) | 1994-09-27 | 1994-09-27 | Sync and clock generating device for converting clock within |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940024373A KR0135220B1 (en) | 1994-09-27 | 1994-09-27 | Sync and clock generating device for converting clock within |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960013078A true KR960013078A (en) | 1996-04-20 |
KR0135220B1 KR0135220B1 (en) | 1998-04-22 |
Family
ID=19393639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019940024373A KR0135220B1 (en) | 1994-09-27 | 1994-09-27 | Sync and clock generating device for converting clock within |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR0135220B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100471558B1 (en) * | 2002-02-19 | 2005-03-08 | 주식회사 자생당 | Manufacturing method for phytin or phytic acid using rice bran |
-
1994
- 1994-09-27 KR KR1019940024373A patent/KR0135220B1/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100471558B1 (en) * | 2002-02-19 | 2005-03-08 | 주식회사 자생당 | Manufacturing method for phytin or phytic acid using rice bran |
Also Published As
Publication number | Publication date |
---|---|
KR0135220B1 (en) | 1998-04-22 |
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