• Educational Technology International
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• v.11 no.1
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• pp.1-26
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• 2010

The purpose of this study was to identify differences in teachers perception on educational attributes and effectiveness of IPTV according to demographic factors. To investigate possibility of educational application, the participants of the study were teachers selected from IPTV initiative schools in elementary and middle levels nationwide. 55 teachers participated from 22 IPTV model schools nationwide, which were 9 elementary schools, 6 middle schools, 7 high schools. As results of research, there were some significant foundings. In terms of the perception on educational attributes of IPTV, there are explicit perceptional difference between "capital area teachers" and "the other regional teachers". However, there were no significant difference according to school level. Perception of male teachers were more positive than those of female teachers. Also, there were no significant difference according to teaching experience. On the other hand, in terms of the perception on educational effects of IPTV, we could conclude that teachers from metropolitan cities have more negative perception on IPTV than teachers from other kinds of cities have. Regardless of school levels, teachers showed merely fair perception on effectiveness of IPTV. There was significant difference between male teachers and female teachers in perception on educational effectiveness. Also, Results showed no significant differences according to teaching experiences. Future tasks for the development of IPTV strategies require specific need analysis of teachers and collaborative works of policy makers, teachers, researchers, and IPTV service providers.

• Electronics and Telecommunications Trends
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• v.23 no.2 s.110
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• pp.98-107
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• 2008

2007년 12월 28일 ‘인터넷멀티미디어방송사업법(안)’이 국회 본회의를 통과함으로써 2008년 4월 18일 동법이 효력을 발휘하게 되었다. IPTV 상용화를 위한 기본 틀이 정해짐에 따라 시행령과 허가지침 등의 제정을 통해 2008년 6월경에는 본격적인 IPTV 서비스가 제공될 것으로 보인다. 미디어 규제정책이나 IPTV의 성장에 비해 시장에서 뒤늦게 출발하기는 하였지만 IPTV를 시작으로 하는 우리나라 미디어 융합 시장은 크게 발전할 것으로 전망된다. 분석결과에 따르면, 낙관적인 관점에서 볼 때 2008년부터 2012년까지 IPTV 가입자는 496만 가구, 매출액은 1조 2,876억 원, 생산유발효과는 10조 1,750억 원, 고용효과는 5만 6천 여 명이 될 것으로 보인다. 지금까지는 IPTV가 미디어 융합을 주도하였지만, 향후에는 보다 새로운 서비스가 미디어 융합을 촉진.발전시킬 것이다. 4G와 NGN 기반의 신규서비스, Web 2.0 TV 기반의 창의적인 비즈니스 모델, 임베디드 미디어 서비스 등 향후 나타나게 될 새로운 미디어 서비스의 발전을 위해 미래지향적인 미디어 정책과 규제프레임을 갖추어 나가는 것이 무엇보다 중요한 시점이 되고 있다.

• Journal of Broadcast Engineering
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• v.19 no.3
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• pp.385-395
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• 2014

This study analyzes empirically main factors of willingness-to-pay for mobile IPTV emphasized as a key service in mobile environment. By structure equation analysis, the results shows that service diversity has influence on usefulness and service quality influences both usefulness and ease-to-use. Secondly, usability has positive impact on attitude and satisfaction. Thirdly, attitude and satisfaction influence willingness-to-pay. These result mean that quality assurance(ex, QoS) and improvement of usability are essential for revenue improvement revenue in mobile IPTV. And also this study can give empirical implications for service portfolio, pricing and bundling strategy as a leading study for mobile IPTV.

• Journal of Digital Convergence
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• v.13 no.11
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• pp.179-185
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• 2015

In this paper, we research the IPTV that is the convergence technique of TV and network technique and performed the performance evaluation of picture quality of IPTV in the situation of increasing the network traffic in the Internet environment. To do this, we constructed the mock Internet network similar to the real Internet environment and measured the quality of received video using V-Factor model according to the increase of network traffic, and analyzed the result of the experiment. Making use of the result of this paper for the threshold value of V-Factor, the measured factor of network performance, the measured factor of video performance in the watchable IPTV video quality.

• Journal of Digital Contents Society
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• v.11 no.3
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• pp.399-406
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• 2010

This study deals with the proposition of the diversification strategy for participation contents service based on the open IPTV policy, and the strategic implication for IPTV players. This paper demonstrates implication for activation of participation contents to IPTV players with reference to differentiation of usages and needs to internet and television. Thus this paper proposes for diversification of player's competency (1) variety of production channels for contents, (2) enhanced accessibility, and (3) the strategic consistency for industrial eco-system. Moreover, this paper suggests that device differentiation for creation of demand, boosting customer satisfaction & immersion through closely interlocking contents.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.19 no.6
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• pp.29-33
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• 2019

Recently, due to the rapid improvement of communication technologies as well as the easy production of video contents, IPTV is becoming increasingly popular. Meanwhile, as the number of IPTV channels increases rapidly, much time is required for finding the user's desired channel. This paper discusses and analyzes the effectiveness of reducing IPTV channel searching delays by using memory management techniques of computer systems. Specifically, this paper introduces how memory management techniques such as memory replacement, prefetching, and caching techniques can be adopted in IPTV channel searching interfaces by mapping between the two problems and discusses the effectiveness of the techniques.

• Journal of Broadcast Engineering
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• v.13 no.6
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• pp.781-795
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• 2008

This paper focuses on effects that IPTV will have on domestic broadcasting market in the point of view of customers. The purpose of the paper is to present the future landscape of competitive media market when IPTV is launched, and to research how IPTV will have impact on terrestrial broadcasting, cable TV and satellite broadcasting industry. The paper integrates two known theories, such as the niche-gratification model and the value-expectancy model, to analyze competitive media market. The value expected model makes it possible to overcome the weakness of the niche-gratification model and to forecast competitiveness more accurately. According to this research, competitive power will be in the order of Cable TV, IPTV, and satellite broadcasting. Terrestrial broadcasting does not show strong competitive relationships with others statistically. As a result, Cable TV will be the most competitive medium in the future. IPTV will be stuck in the middle and can rapidly substitute for existing broadcasting services. While IPTV will severely threaten the satellite broadcasting company which has a relatively small number of subscribers, cable TV will be in a superior position to IPTV.

• Korean journal of communication and information
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• v.46
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• pp.485-510
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• 2009

Since the inception of Internet Protocol TV's real-time service on January, 2009, technological challenges and lack of content diversity of IPTV have been cited as problem areas. While past researches focused on IPTV's technological, industrial and policy facets, this research surveyed the viewers' viewing and usage patterns, and the level of service satisfaction among actual audiences of MegaTV, SKBroadband, and LGTV since January. The results show that subscription fee and content types were the two dominant determinants in audience's choice of a particular IPTV company. The high users of IPTV were on average aged between 30-39, and women tended to be heavier users than men. The surveyed audience also regarded IPTV to be more similar to the Internet than any other medium such as Cable TV and Satellite TV. IPTV audience cited 'lifestyle service' and 'additional service' offerings to be highly relevant to their usage and satisfaction; interactive service and educational service also showed high correlation to usage and satisfaction. The most watched contents on IPTV were domestic TV series, followed by foreign movies and variety shows. 'Fees for additional features,' 'lack of real-time terrestrial TV service', and 'lack of content variety' were the major areas of concern for IPTV viewers. They answered that the monthly fee was the most important factor in the selection of IPTV. Use of pay-per-view contents and add-on interactive service fees were also seen as problematic. With regards to future usage, the IPTV audience revealed that they were very sensitive and reluctant to pay for additional services. While existing researches concentrated on IPTV's technological problems and lack of content diversity, this study illuminated the more pragmatical side of the viewers, namely, the importance of price in audience's selection of an IPTV service provider. From these results, it is recommended that, before doing anything else, the service providers try to meet the audience's expected price points in order to garner the full potential of IPTV and the attendant mass audience.

• Journal of Digital Convergence
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• v.10 no.3
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• pp.105-111
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• 2012

Internet Protocol Television (IPTV) through broadband cable network is a subscriber-based system which consists of software and set-top box. However, a weakness for the current IPTV system is the lack of security between users and CAS. This paper proposes a user authentication protocol at STB, which limits the service by the user-valued attribute to prevent illegal IPTV users. User attribute values change the order with bit form according to the certain rule, and apply to one-way hash function and Diffie-Hellman's elliptic curve key-exchange algorithm. The proposed protocol is able to improve on user authentication and computation. Also, each user generates an authentication message by smart card and receives various services based on the user-valued attribute.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.05a
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• pp.525-528
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• 2009

This paper attempts to conceptually examine the potential of IPTV(Internet Protocol Television). First, this paper reviews the concept of a bridging telecommunication service and a gap-filling telecommunications service. Second, the current status of various emerging telecommunications services including mobile WiMax, called WiBro, and both satellite and terrestrial digital multimedia broadcasting service, called DMB are comprehensively analyzed. Based on those analysis, this paper analyzes whether IPTV is regared as a bridging telecommunications service or a gap-filling telecommunications service and examine the potential growth possibility of IPTV. Finally, the suggestions for policy makers are discussed.