• Korean Management Science Review
• /
• v.27 no.3
• /
• pp.43-70
• /
• 2010

Influences of convergent services on the overall industry has become noticeable. Various services are becoming to converge into a single platform because of ever-hanging needs of digital service users. However, few studies have investigated how users' perception of convergent services as well as the quality of experience that service users have while using the convergent services. Therefore, this study aims at identifying perceived patterns of convergent services by IPTV users, which is one of the representative convergent-ervice platforms. It also aims at identifying the impact of perceived convergence pattern on the relationship between goal congruency among individual services and the quality of user experience. Two empirical studies were conducted to accomplish the research goals. We have constructed two prototypes of convergent digital services in the IPTV environment and conducted controlled experiments to verify the research hypotheses. The results indicate that design similarities of two services substantially influence the perceived patterns of convergent services. It was also found that the perceived convergent patterns have significant moderating effects on the impact of perceived goal congruence upon the quality of user experience. This paper ends with limitations as well as implications of the study results.

• 한국HCI학회:학술대회논문집
• /
• 2008.02b
• /
• pp.251-256
• /
• 2008

가상 채널을 통한 IPTV 인터렉션 디자인 -멀티미디어 컨텐트 소비를 중심으로 정해진 방송시간에 따라 일 방향적으로 프로그램 매제를 제공하던 TV 는 바야흐로 혁명의 시대를 맞고 있다. 이에 따라 사용자는 오랜 시간 기존의 TV 에서의 사용자 경험을 유지한 채, IPTV 라는 새로운 방식의 시스템을 경험하게 된다. 따라서 기존의 TV 사용자들도 이러한 새로운 형태의 TV를 거부감 없이 적극적으로 사용할 수 있도록 하기 위하여 사용자 중심의 인터렉션에 대한 연구와 인터페이스 개발의 필요성이 높아지고 있다. 본 연구에서는 현재 국내에 상용화된 IPTV 의 서비스들 중에서 주식, 쇼핑, 교통 등과 같은 양방향 서비스를 제외한 실시간 방송과 기존의 VOD 컨텐츠들을 포함한 멀티미디어 컨텐츠 소비에 대한 인터렉션 방법을 연구 범위로 정하였다. 본 연구를 위하여, 기존의 IPTV VOD 컨텐트의 소비 방식에 대해 다양한 사용자 리서치를 실시하였다. 그 결과 피 실험자들은 기존의 TV 에서 경험했던 것과 같이 단순하고 심플한 조작 방식으로 원하는 task 를 수행하여 각 목적에 맞는 결과를 얻는 것을 기대 한다는 것을 알 수 있었다. 그러나 실제 이 과정에서 피실험자들은 인터렉션 상의 여러 가지 문제점을 겪었는데, 특히 VOD 소비 방법의 accessibility 부분에서 해결해야 할 사용자 경험 요소들을 많음을 알 수 있었다. 따라서 본 연구를 통하여 현재 국내에 상용화된 IPTV 의 VOD 컨텐츠 소비 방식과 실시간 방송 컨텐츠를 소비함에 있어서 사용자가 만족하지 못하는 경험적 요소들을 집중적으로 연구하여, 기존의 TV 사용자가 더욱 적극적으로 멀티미디어 컨텐츠를 소비할 수 있는 방안으로 새로운 개념의 가상채널 인터렉션 방법을 제안하고자 한다.

• Proceedings of the Korea Contents Association Conference
• /
• 2009.05a
• /
• pp.737-742
• /
• 2009

As increasing emphasis is being placed on user experience design, the RIA technology is widely deployed for user interface and software operation on embedded devices including cell phones and TVs. In particular, RIA-based IPTV enables creation of various interactive contents via sophisticated animation and various input devices. This paper proposes a service framework for emotional contents on broadcast and communication-converged IPTV systems. We design a programming interface extension for IPTV-based flash contents and develop a prototype of flash runtime with the extended programming support. Since the proposed runtime was carefully designed to fully utilize the built-in graphic acceleration hardware in media processor, it supports high resolution graphic animation in resource-constrained IPTV environments.

• Asia pacific journal of information systems
• /
• v.23 no.3
• /
• pp.55-76
• /
• 2013

The principal objective of the work is to confirm the effects of perceived interactivity, trust, and emotion on intentions to use IPTV service. The empirical investigation into IPTV service users suggests that (i) the perception of interactivity should be directly related with trust, (ii) Users' trust should bolster users' emotion in a positive or negative aspect, and (iii) such emotion is verified to affect the intention to use IPTV continuously. More specifically, we demonstrate that positive and negative emotions influence user intentions positively and negatively. Additionally, we find that the trust mediates perceived interactivity and emotions, and both trust and emotion mediate the relationship between perceived interactivity and intentions to use IPTV. The work indicates that trust and emotion of users should be considered from IS perspective in an attempt to build the intention to use IPTV. IPTV firms should consider in their IPTV design and offering strategy how to enhance positive emotions for user retention and eventually bolster intentions to use IPTV continuously.

• 한국HCI학회:학술대회논문집
• /
• 2009.02a
• /
• pp.818-825
• /
• 2009

Edutainment is the one of important factors to study interactive TV for children, and it is a big portion in kid's marketing and education market as well. The aim of this study is to design interactive TV for children to maximize edutainment effects by researching children's behaviors. The analysis of children's behaviors with educational effects should be focused to apply designing user experience to propose new ideas of interactive TV. Through observing children's behaviors and interaction with other media, such as books, CD players, digital camera, and so on, TV can be reanalyzed as reliable media, which is creative interactive TV for children with proposals of user experience structure and interaction solution. TV has been changed from analog TV to IPTV and it will be different with network and interactive solution.

• Journal of the Ergonomics Society of Korea
• /
• v.31 no.4
• /
• pp.557-565
• /
• 2012

Objective: This paper focuses on the new trend of applying NUI(natural user interface) such as gesture interaction into television and investigates on the design improvement needed in application. The intention is to find better design direction of NUI on television context, which will contribute to making new features and behavioral changes occurring in next-generation television more practically usable and meaningful use experience elements. Background: Traditional television is rapidly evolving into next-generation television thanks to the influence of "smartness" from mobile domain. A number of new features and behavioral changes occurred from such evolution are on their way to be characterized as the new experience elements of next-generation television. Method: A series of expert review by television UX professionals based on AHP (Analytic Hierarchy Process) was conducted to check on the "relative appropriateness" of applying gesture interaction to a number of selected television user experience scenarios. Conclusion: It is critical not to indiscriminately apply new interaction techniques like gesture into television. It may be effective in demonstrating new technology but generally results in poor user experience. It is imperative to conduct consistent validation of its practical appropriateness in real context. Application: The research will be helpful in applying gesture interaction in next-generation television to bring optimal user experience in.

• 한국HCI학회:학술대회논문집
• /
• 2009.02a
• /
• pp.811-817
• /
• 2009

In this paper, we present the results of two studies on Social TV. In one study, meaning and possibility of TV as social media was theoretically studied and based on this meaning, we reviewed existing social TV systems and literatures. By doing this, we could extract the conditions and issues raised by designing Social TV's user experience. Based on our analysis, we could conclude with elements which are (1) channel communication, (2) Co-viewing experience, (3) Interaction Devices and elements, (4) Personalized contents browsing and selecting, (5) Accessibility and usability (6) User interface design.

• Journal of Digital Contents Society
• /
• v.11 no.4
• /
• pp.445-452
• /
• 2010

This paper deals with the exploratory study & experimentation for foundation & theoretical base of menu structuring & design improvement of digital media (IPTV, Digital cable TV) service players. Digital media service providers had been offered many cases of menu structure since their service launched. Researcher set a research topic which verification of eye tracking velocity when media user feels with perceived ease of design and the familiarity. Researcher arrives at a conclusion through as stated above experiment that vertical type of menu and horizontal type of menu are differentiated from the contents characteristics. Research conclusions & implications are strong theoretical base with digital media service players when they planning and designing their service structuring.

• Asia pacific journal of information systems
• /
• v.19 no.3
• /
• pp.25-49
• /
• 2009

Advances in technology have resulted in the emergence of new information systems. The convergence of IT and manufacturing sectors has blurred the boundaries among industries. Also, such convergence has become established as a paradigm to build a new area. Especially the convergence of broadcasting and telecommunication, notably in the case of IPTV (Internet Protocol Television), is among the most salient examples of its kind in recent years as a major case of disruptive technology innovation. Despite its much fanfare, such convergence, however, has not fulfilled the expectation; it has not produced positive economic effects while negatively affecting the growth of IPIV. Stakeholders in and around IPIV including telecommunication companies, broadcasting corporations, and government bodies wish to gain control of IPTV under their wings. IPTV has drifted in the midst of conflicts among the stakeholders in and around IPTV, particularly telecommunication and broadcasting organizations in a broad sense. Our empirical research intends to deal with how audiences accept IPTV and how firms provide IPTV services to utilize their resources. Three research questions in this paper include, first, whether Technology Acceptance Model (TAM) can sufficiently explain the acceptance of IPTV as an information system. The second question concerns with empirically testing the playful aspect of IPTV to increase its audience acceptance. Last, but not least, this paper deals with how firms can efficiently and effectively allocate their limited resources to increase IPTV viewers. To answer those three main questions of our study, we collect data from 197 current subscribers of high speed internet service and/or cable/satellite television. Empirical results show that 'perceived usefulness (PU) $\rightarrow$ Intention to use' and 'perceived ease of use (PEU) $\rightarrow$ Intention to use' are significant. Also, 'perceived ease of use' is significantly related to 'perceived usefulness.' Perceived ease of handling IPTV without much effort can positively influence the perceived value of IPTV. In this regard, engineers and designers of IPTV should pay more attention to the user-friendly interface of IPTV. In addition, 'perceived playfulness (PP)' of IPTV is positively related to 'intention to use'. Flow, fun and entertainment have recently gained greater attention in the research concerned with information systems. Such attention is due to the changing features of information systems in recent years that combine the functional and leisure attributes. These results give practical implications to the design of IPTV that reflects not just leisure but also functional elements. This paper also investigates the relationship between 'perceived ease of use (PEU)' and 'perceived playfulness (PP).' PEU is positively related to pp. Audiences without fear can be attracted more easily to the user-friendly IPTV, thereby perceiving the fun and entertainment with ease. Practical implications from this finding are that, to attract more interest and involvement from the audience, IPTV needs to be designed with similar or even more user friendly interface. Of the factors related to 'intention to use', 'perceived usefulness (PU)' and 'perceived ease of use (PEU)' have greater impacts than 'perceived playfulness (PP).' Between PU and PEU, their impacts on 'intention to use' are not significantly different statistically. Managerial implications of this finding are that firms in preparation for the launch of IPTV service should prioritize the functions and interface of IPTV. This empirical paper also provides further insight into the ways in which firms can strategically allocate their limited resources so as to appeal to viewers, both current and potential, of IPTV.