• Proceedings of the Korea Society of Design Studies Conference
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• 2001.05a
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• pp.42-43
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• 2001

• Journal of the Ergonomics Society of Korea
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• v.23 no.2
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• pp.55-80
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• 2004

Multichannel on digital TV not only gave opportunities to the TV audience to view a wide range of programs. but also made it difficult for them to search for the program which they plan to view among over 1000 programs broadcasted on more than 100 channels. In this paper the functions of EPG (Electronic Program Guides) required by the users on digital TV were derived from the systematic analysis of multichannel viewing situations. In the situation analysis the situations where they viewed programs on more than 100 channels were generated systematically and the viewing processes in those situations were analyzed to identify user needs and derive the required functions of EPG. We surveyed the viewing behavior of the audience who subscribed to a digital satellite broadcast. SkyPerfecTV. in Tokyo. Japan. The purpose of the survey was to verify the validity of the functions derived from the situation analysis and to identify hidden user needs which were difficult to in the situation analysis. The functions were implemented on a working prototype of EPG based on a digital TV simulator which broadcasts 500 programs on 100 channels and can be controlled by three working prototypes of personal remote controllers. The working prototype will be used in Participatory Design to make it possible for the users to experience and verify the usefulness of the required functions of EPG and also find problems in user interface design of EPG

• Journal of Korea Multimedia Society
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• v.12 no.2
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• pp.219-230
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• 2009

With the development of broadcasting technology from analogue to interactive digital, the number of TV channels and TV contents provided to audiences is increasing in a rapid speed. In this multi-channel world, it is difficult to adapt to the increase of the TV channel numbers and their contents merely using remote controller to search channels. For these reasons, the EPG system, one of the essential services providing convenience to audiences, is proposed in this paper. Collaborative filtering method with multi-step filtering is used in EPG to recommend contents according to the preference of audience groups with similar preference. To implement our designed TV contents recommendation EPG, we prefer DiTV and use JavaXlet programming based on MHP. The European DVB-MHP specification will be also our domestic standard in DiTV. Finally, the result is verified by OpenMHP emulator.

• Proceedings of the Korean Information Science Society Conference
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• 2003.10c
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• pp.589-591
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• 2003

최근 디지털 TV 방송의 활성화에 힘입어 수많은 채널을 통한 TV 프로그램 방송이 가능하게 되었다. 이로 인해 디지털 TV 시청자들은 신문 또는 TV 가이드와 같은 기존 인쇄매체를 통해 자신이 원하는 TV 프로그램 스케줄을 얻기가 사실상 매우 어렵게 되었다. 이와 같은 문제점을 해결하기 위해 디지털 TV 환경에서는 전자 프로그램 가이드(EPG: Electronic Program Guide)를 제공한다. 현재 제공되고 있는 EPG 서비스들은 대개 디지털 TV 화면 또는 각 방송사 웹 사이트 그리고 이동 단말기 등을 통해서 서비스 되고 있다. 대부분의 기존 연구들은 EPG 정보를 화면상에 시각적으로 제공하는 측면에만 초점을 두고 있다. 하지만 실질적으로 사용자 입장에서는 원하는 방송 프로그램의 스케줄 정보를 찾기 위해서 수백 채널에 달하는 방송 프로그램에 대한 정보를 일일이 검색하는 것은 매우 힘든 일이다. 게다가 사용자가 원하는 키워드를 직접 입력하는 방식 또한 사용자를 매우 번거롭게 한다. 따라서 본 논문에서는 EPG 서비스 방식에 VoiceXML 관련 기술을 접목하여 이동 단말기상에서 간단한 음성입력을 통해 EPG 서비스를 제공받을 수 있는 음성 인터페이스를 제안한다.

• Proceedings of the Korea Society of Design Studies Conference
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• 2002.05b
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• pp.184-185
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• 2002

• Journal of Broadcast Engineering
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• v.10 no.1 s.26
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• pp.103-118
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• 2005

Since the introduction of digital broadcasting, an additional advanced service called EPG has been brought to viewers. EPG (Electronic Program Guide) helps people select channels or programs. But existing user Interfaces for EPG are not convenient enough for the viewer. TV is the media anyone can access. Therefore, the 'look and feel' user interface is needed to guide the viewer to select their favorite programs without any difficulties. Generally, TV programs can be categorized by their attributes such as genre, broadcasting hours, and TV ratings. At the present moment, those attributes are not categorized systematically enough for easy program navigation. This paper presents how to organize the attributes of TV programs systematically and offers a user friendly interface to help the viewer access their favorite programs by specifying the values of the attributes in any order comfortable to them.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.41 no.12
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• pp.51-60
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• 2004

DAB(Digital Audio Broadcasting) is a new media service that can provide CD quality audio, various data service, interactive and high quality mobile communications through popular media such as terrestrial broadcasting, satellite, cable TV, and internet. In this paper, a new EPG(Electronic Program Guide) application model is proposed. The model is based on DAB and combines a DAB receiver and PCs so that it can take advantages of using various multimedia services and plenty of internet contents. The developed EPSD(EPG Provider System on DAB) has Web-based Server/Client structure and povides EPG functionalities to client PCs over internet. Therefore, the DAB receiver can be smaller and cheaper, and can develop abundant data services on internet. It can also provide high quality video services and be expected to become an important component in future home network systems.

• Proceedings of the Korea Information Processing Society Conference
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• 2007.05a
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• pp.435-438
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• 2007

국내에서 디지털 방송 상용화에 성공하고 전송 모델 또한 다양화됨에 따라 사용자는 다양한 형식으로 다수의 방송 프로그램을 접할 수 있게 되었다. 이에 대한 효율적인 프로그램 관리를 위한 EPG(Electronic Program Guide) 서비스가 현재 제공되거나 개발 중이다. 지능형 개인화 EPG는 디지털 방송 스트림이 수신되는 환경에서 사용자와 방송 수신기의 지능적인 매개체로서 운영되며 본 연구는 기존 프로그램 정보에 대한 장르를 학습하고 새로운 프로그램 정보가 입력될 경우 올바르게 장르를 분류할 수 있도록 기계학습 기법이 사용되었다.

• The Journal of the Korea Contents Association
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• v.11 no.4
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• pp.1-10
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• 2011

While the broadband network and multimedia technologies have been developing, the commercial market of digital contents has also been widely spreading with recently starting IPTV. Generally, PC player can display digital contents obtained through middleware like a settop box and can only bring the informations about contents like CODEC, bitrate etc. useful for only experts. But general users want to know more optional informations like content's subject, description etc. So unlike previous PC player, we proposed a player system that can get inserted informations, namely EPG(Electronic Program Guide), without database after bringing contents to PC through settop box. In addition, we also proposed DCT(Discrete Cosine Transform) based blind watermark generating method to insert EPG informations. We can extract watermark without original image and insert robust watermark in proportion to coefficients in frequency domain. And we analyzed and parsed PSI data from MPEG-TS. So we could insert wanted information using watermark from EPG. And we composed UI by extracting EPG information from watermark interted contents. Finally we modularized whole system into the watermark insert/extract application and directshow filter based player. So we tried to design this system so that the general developer can do in a way that is easier and faster.

• Korean journal of applied entomology
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• v.55 no.4
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• pp.351-358
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• 2016

Consistent with a previous study on the brown planthopper Nilaparvata lugens (BPH) (Seo et al., 2009), we identified seven distinct EPG waveforms (np, L1, L2, L3, L4-a, L4-b, and L5) in adult female Laodelphax striatellus (SBPH) that fed on rice plants, by using the direct current electrical penetration graph (DC-EPG) system. The shape of waveforms and the pattern of occurrence of each waveform of SBPH were very similar to those of BPH. L3 and L4-a always occurred prior to L4-b. Periodical honeydew excretion was observed in L4-b only. Microsection observation following laser stylectomy revealed that the tips of SBPH stylets severed in L3, L4-a, and L4-b were commonly located in or near the phloem region of rice plants, but were located in the xylem in L5. Plant sap flowed from the stylets severed in L4-b only, and its main carbohydrate component was detected as sucrose by HPLC analysis. These results and the patterns of EPG waveform progress in SBPH suggested that feeding activities on rice plant tissue were relevant to each EPG waveform. L1 and L2 corresponded to the initiation of stylet penetration and stylet movement with salivation on the outside of the vascular bundle. L3 and L4-a were related to feeding activities within the phloem region in preparation for phloem sap ingestion. L4-b was closely associated with phloem sap ingestion, and L5 corresponded to xylem feeding behavior.