• Journal of the Korea Institute of Information and Communication Engineering
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• v.23 no.6
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• pp.748-755
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• 2019

CCTV Systems have been operated in the variety of serveillance fields of the apartment, transportation, safety, physical security, and so on. And their uses are largely increasing as the CCTV transmission technology has been changed from analog to IP network way. Domestic industry has been working to upgrade from analog CCTV systems to High-Definition(HD) CCTV systems for recent years, which involves a few issues such as mixing with several transmission technologies and duplicated investment in each area because the technological analysis and criteria are specifically not arranged. This paper examines the technical issues of the transmission method between HD analog and HD IP CCTV systems, and induces the criteria of the cost analysis and its weighting factors for HD CCTV reformation. By simulating the cost analysis results of both the HD CCTV systems on apartment environment, this paper proposes the reference for the choice of HD CCTV system reformation.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.36 no.8A
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• pp.730-740
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• 2011

The Korean radio broadcasting system is analog. Compared with digital radio, the analog radio decreases the frequency efficiency. HD Radio is the method where the digital signal is transmitted on either side of the analog PM signal. Therefore, without relocating the analog frequency can transmit digital signals. If interference between analog and digital signal occurs it is impossible to receive smoothly, so HD Radio interference with existing analog PM will be analyzed. In this paper, based on Mt.Gwae-Bang stations within +-400kHz frequency of l03.5MHz, and to use the station to station by specifying the HD Radio channel interference, place the structures were analyzed. Through this paper, the reader of a digital radio frequency interference in the system know that it may obtain information about.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2015.11a
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• pp.317-318
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• 2015

이 연구에서는 아날로그 기반의 고화질 전송 시스템(HD Analog system)에 관하여 고찰하였다. 오늘날 영상감시시스템은 고해상도 적용을 위한 기술개발을 통해 고품질의 영상을 구현할 수 있는 HD-SDI나 Network camera로 전환되고 있다. 그러나 Network camera는 기존 시스템과의 현격한 구성 차이로 전체 시스템을 다시 구축해야 하고, HD-SDI는 저가형 케이블 등에서는 만족할 만한 성능이 보장되지 않았다. 이러한 배경에서 등장한 것이 HD Analog system이다. HD Analog system은 기존 동축케이블을 이용할 수 있으며 저가형 케이블에서도 최대 500m 이상 전송이 가능하고, 구축비용을 절감할 수 있는 장점이 있다. 그러나 제조사별 시스템의 호환 문제 등을 해소하기 위한 표준화는 HD Analog system의 성장을 위한 선결과제로 제기된다.

• Journal of Broadcast Engineering
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• v.21 no.6
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• pp.986-994
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• 2016

In this paper, a digital closed-circuit television (CCTV) transmission system called the extended reach high definition serial digital interface (ER-SDI) is proposed to increase the transmission distance while preserving the quality using digital modulation. The current standard of HD-serial digital interface (HD-SDI) has the maximum transmission distance of 200 m. Recently, one system which transforms the digital signal to an analog signal and modulates color signal to extend the transmission distance is proposed. Another system which uses IP network is also proposed. However, the former system has a disadvantage of video quality and the latter system has high latency. The proposed ER-SDI is designed to extend the transmission distance of 518 m by adopting multilevel constellations and a channel code for a data rate of 1.485 Gbps. The maximum transmission distance of the proposed system is calculated using the specification of HD-SDI and the experiment result under coaxial cable environment.

• Journal of Digital Contents Society
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• v.10 no.3
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• pp.461-468
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• 2009

In a recent year, the broadcasting system has been changed from analogue to digital all over the world, not just in Korea, and Korea aims at accomplishing 100% digital broadcasting by 2013. The HD(High Definition) Video Format, which currently plays a key role in digital broadcasting system, has been gradually extended in the field of broadcasting and movie. Additionally, many kinds of camcoders and editing systems have been rapidly converted into the digital types, and they are supporting to photograph and video editing systems with the various types of image formats such as SD(Standard Definition) format, HD format, 2K, 4K, etc. Tape Video Storage System, which has been usually used in the stage of photographing by this day, is gradually evolving into Tapeless Video Data Storage System. Thus in this study, Video Compression method of HD format photographed by Sony PMW-EX3, one of major tapeless camcoders, is studied and also the way of applying it effectively in Avid Media Composer, a non-linear editing system, is discussed.

• Proceedings of the Korea Contents Association Conference
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• 2013.05a
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• pp.335-336
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• 2013

아날로그 방송이 2012년 12월 31일 종료되고 디지털 방송 시대를 맞이했다. 디지털 방송은기존의 아날로그 방송에 비해 디지털은 HD화질로 주사선이 2배가 넘는 1050~1250으로 영화스크린처럼 선명한 화면으로 아날로그 TV보다 4~5배 정도의 화질의 차이가 있으며, 음질에서도 CD 수준의 고음질로 전환되었다. 따라서 디지털 TV로 전환되었고, 화면크기와 전환 효과 비디오효과, 화면 분할, 3D 기법 적용 등 다양한 영상 변화를 나타낸다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.12 no.2
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• pp.240-246
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• 2008

It has able to be possible that expression and store visual image from analog to digital without picture quality damaged via improvement of video compression technology. And also, It is possible to broadcasting digital image via transmission of digital image on MPEG-2 standardization. For this reason, the broadcasting business owners have converted broadcasting service from analog to digital. But, local SO(System Operator) has a difficult point which secure HD(High Definition) broadcasting program. In this paper, we designed and implemented Scheduling System for MPEG-2 Digital Broadcasting which gather HD broadcasting program from major broadcasting business owners and broadcast them.

• Journal of the Korea Society of Computer and Information
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• v.15 no.3
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• pp.37-43
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• 2010

In this study, the multi format 8.4" LCD monitor for broadcasting has been proposed by the simple circuit design and the efficient processing technique. The small sizing technique, the mixed-type video signal processing technique, the emerging skill of multi-format HD signal to one port, the dividing technique between the analog and digital signal, the embedded audio signal developing technique are the key researches of this study. The proposed multi format 8.4" LCD monitor has been focused on the broadcasting field and has been supposed to have the efficiency at that field.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2014.06a
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• pp.122-125
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• 2014

세계적으로 아날로그 방송에서 디지털 방송으로의 전환이 마무리되고 있는 가운데, 앞으로 다가올 UHDTV 등 실감의 대용량 방송 및 방송 통신 융합 환경에 대비하기 위한 새로운 차기 방송 표준에 관한 연구의 필요성이 날로 높아져 가고 있다. 특히, 저해상도 서비스에 머물러 있던 이동 방송에서는 기존 HD급의 서비스 제공이 가능한 이동 실감방송으로 진화하기 때문에 고정/이동 방송 서비스가 동시에 가능한 고효율 전송 원천 기술 개발이 이루어질 필요가 있다. 이에 최근 지상파 단일 채널을 통해 4K & HD 방송 서비스를 동시에 제공하는 융합방송 시스템 개발에 대해서 연구가 진행되고 있다. 본 논문에서는 지상파 단일 채널을 통해 4K & HD 융합방송 서비스를 제공하기 위해 필요한 전송 요구 사항들에 대해서 분석하고, 효율적인 데이터 전송을 위해 필요한 전송 시스템 및 다중화 기술에 관해서 알아보았다. 또한 분석한 데이터 전송률을 달성하기 위한 최적의 시스템 파라메터를 도출하고 분석하였다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2007.06a
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• pp.117-120
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• 2007

It has able to be possible that expression and store visual image from analog to digital without picture quality damaged via improvement of video compression technology. And also, It is possible to broadcasting digital image via transmission of digital image on MPEG-2 standardization. for this reason, the broadcasting business owners have converted broadcasting service from analog to digital. But, local SO(System Operator) has a difficult point which secure HD(High Definition) broadcasting program. In this paper, we designed and implemented Scheduling System for MPEG-2 Digital broadcasting which gather HD broadcasting program from major broadcasting business owners(as like MBC, KBS, SBS, etc) and broadcast them.