• Journal of Broadcast Engineering
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• v.15 no.4
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• pp.461-473
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• 2010

Since eco friendly and power saving products recently got into the limelight for the protection of environment, LED light technology has caught much of attention as the next generation broadcasting lighting. The newly introduced light source has such advantages as higher efficiency, longer life and its slim and compact forms leading to conveniency in installations. When combined with digital light control it gives more dynamic and various features to lighting. In this paper, used CIE standard for measuring light sources by their purposes and forms to make a comparative analysis of spectral distribution and color rendition of LED light source to those of existing lighting systems. By means of the cast shadowing and color reproduction tests I also tried to figure out the effects of LED lighting design on TV visuals where higher quality is crucial with the audience's increasing demands for quality image.

• Journal of Broadcast Engineering
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• v.18 no.6
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• pp.927-934
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• 2013

This paper aims to realize a Signal to Noise Ratio Estimator which constitutes a critical index of the broadcasting system in OFDM system with a synchronized type based on ISDB-T system. Of the elements which are comprising OFDM segments of ISDB-T system using the MSE algorithm suitable for ASIC design owing to its low complexity among a diverse SNR estimation methods, SNR estimation method using the broadcasting information data and the SNR estimation method using scattered pilot signal were realized by RTL. These two methods were compared in terms of their performance through simulation test not only in the AWGN channel which is an ideal channel, but also in SFN channel and frequency selective fading channel, which are distorted channels. Complexity of two methods were also compared through RTL realization. As a result of this comparison analysis, it was concluded that the SNR estimation method using scattered pilot signal shows more excellent performance and easiness in realization.

• Journal of Broadcast Engineering
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• v.22 no.1
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• pp.95-106
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• 2017

Interest in companion screen services and high-definition television broadcasting services are rising along with the advanced of digital broadcasting communication technology. Not only providing good-quality broadcasting services in the main screen, but also creating added values of companion services in the secondary screen are important. In this paper we suggest a platform and a related authoring tool generating adaptive companion screen services according to user contexts. The Platform providing adaptive companion screen services based on user environment is designed and implemented for real service market. Proposed platform organizes a higher quality content service considering both user contexts and demands of service providers in real time, and the related authoring tool enables a novice user interface designer and service director to make adaptive user interfaces quickly and easily. We developed and simulated this platform in accordance with Korean UHD IBB standard which provides interactive service applications.

• Journal of Korea Game Society
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• v.17 no.6
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• pp.51-62
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• 2017

The augmented reality toy-game is a kind of new game genre that can be seen within the concept of augmented reality games, and it is a term to refer to the content or hardware that plays the game using the toy of the real world. This study aims to analyze the elements for the model of toy-game development based on the augmented reality. This study analyzed three characteristics of toy game which are different from other games based on existing related research. and have selected important factors to consider when developing augmented reality toy-game. A questionnaire was conducted to determine the suitability of the development elements derived, and the analysis and verification of the factors derived using an exploratory analysis method. As a result, it showed a reasonable outcome of the selection of variables, with the exception of some of the questions, and the classification results of the multi-dimensional scaling methods were also classified as reasonable in the clustering analyses.

• Journal of the Korean Society of Costume
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• v.56 no.9 s.109
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• pp.157-175
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• 2006

The purposes of this study are to establish a theoretical concept of nudism from sociocultural context, to examine its formative characteristics, to analyze the cultural meaning of nudism style showing in the 2000's fashion world, and to analyze and examine its aesthetic qualities. The way of a study was based on analysis and review on philosophy, aesthetics, sociology, popular culture and various documents at home and abroad and previous study and research materials about art and clothes for theoretical study. Also, we carried out a case study by analyzing photo data from fashion books, magazines and internet websites, considering the body and dress as visual objects. The summary and conclusions of this study are as follows: 1. Nudism of the sociocultural context was divided into change of understanding of the body and liberation of the body; naturalism; resistant culture; psychoanalysis context. 2. The formative characteristics of nudism style in fashion are classified in Exposure, Transparency and Body Conscious. 3. The cultural meaning of nudism style expressed in the 2000's fashion are sexual opening, surfeit of mass media, pursuit of naturalism, lookism, and individualism. 4. Nudism style expressed in 2000's fashion is drawn as three aesthetic qualities: Eroticism, Primitivism and Futurism. First, Eroticism of nudism style fashion which seeks for sexual stimulus is classified in Sensualism, Provocation and Innocence. Second, Primitivism of nudism style fashion which tends towards naturalism objecting to mechanic and digital civilization and hoping for return to the origin is classified in Primitivism, Naturalism and Sensualism as per aesthetics qualities. Futurism which is the nudism style presenting futuristic expression through using a new material is analyzed as High Technology, Cyber Sexism and functional Future.

• The Journal of the Convergence on Culture Technology
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• v.6 no.1
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• pp.495-500
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• 2020

VANET (Vehicular Ad Hoc Network), an example of an ad hoc vehicular networks, becomes one of the popular research areas together with the self-driving cars and the connected cars. In terms of the VANET implementation, the traditional TCP/IP protocol stack could be applied to VANET. Recently, CCN (Content Centric Networking) shows better possibility to apply to VANET, called VCCN (VANET over CCN). CCN maintains several data tables including CS (Content Store) which keeps track of the currently requested content segments. When the CS becomes full and new content should be stored in CS, a replacement algorithm is needed. This paper compares and contrasts four replacement algorithms. In addition, it analyzes the transmission characteristics in diverse network conditions. According to the simulation results, LRU replacement algorithm shows better performances than the remaining three algorithms. In addition, even the size of CS is small, the network maintains a reasonable transmission performance. As the CS size becomes larger, the transmission rate increases proportionally. The transmission performance decreases when the network is crowded as well as the number of transmission hops becomes large.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.23 no.12
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• pp.1337-1342
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• 2012

In this paper, we propose a novel reconfigurable antenna that can change the electrical shape of the matching network using RF switches of PIN diodes. The designed antenna operates at two different modes that are Mode 1 (HSDPA band, 2.1~2.2 GHz) and Mode 2(WiBro WiFi band, 2.3~2.5 GHz). The antenna is built on both sides of a polyarcylate substrate. The measured reflection coefficient shows a matching bandwidth of 547 MHz($S_{11}$ <-3 dB, 2.035~2.582 GHz) for Mode 1 and 600 MHz($S_{11}$ <-3 dB, 2.2~2.8 GHz) for Mode 2, and it shows average vertical gains of -4.4 dBi and -4.5 dBi in x-y plane, respectively.

• Proceedings of the Korea Contents Association Conference
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• 2008.05a
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• pp.161-165
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• 2008

The purpose of this study is to design and apply that teaching and learning methodology of motion image based on modified ASSURE model to improve creativity the competitive power of an information oriented society. To accomplish the end of this study, the following procedure and methods were performed. After the theoretical consideration about education visual image and creativity, we get to the bottom the connection of them. In the result of that, it designed plans for teaching and learning applied by modified ASSURE model. And it had larger efficiency to apply a creativity develop learning model when it spread out teaching and learning process to produce motion image. The main points of the result and the meaning are as follows. Firstly, in the light of the result of this study, student's creativity were enhanced to a large extent as applying this study. It appeared that the average of performance improved from 30.18 to 37.44. Such difference was t=-14.39 (p<0.05), which is a meaningful difference in terms of statistics. Secondly, it laid the foundations for being cultural prosumer as applying this study. Additionally, it anticipated that all the students join in this study become leader group in the age of digital media.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.19 no.1
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• pp.13-18
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• 2015

This study presents the structure design of antenna to have the dual band characteristics in a desired frequency band through the structural modification of an antenna structure. For the experiment, a wideband crossed planar monopole antenna was used. The target frequency band was set to ISM 2.45GHz/5.8GHz. To give the properties, an additional antenna element was added to the crossed planar monopole antenna, which is a main body of the antenna. And then structural adjustment parameter was set to change the length(shape) of the antenna. Various simulations were conducted to find the dual band characteristics in the desired frequency band. The simulations brought forth the antenna bandwidth above the normal values for ISM 2.45GHz/5.8GHz. The structural adjustment parameter introduced in this study for structural modification of an antenna can be useful in developing an antenna featured with dual band(multiband) characteristics.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.22 no.12
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• pp.1563-1570
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• 2018

Internet of Things technology is rapidly becoming a reality in many parts of our lives through various product services, and product development especially in the field of smart home is being actively carried out. Most controllers for controlling various smart home products use smart phone applications. However, smart phone applications are not suitable as smart home controllers, contrary to smart home services that emphasize intelligence and convenience. In order to provide intelligent smart home service, intuitive form of smart home controller is needed, which enables integrated control of smart home device. Therefore, this paper proposes a smart home remote control that can control the Internet devices and services of objects. The proposed smart home remote control provides an environment where users can build a smart home service through the IFTTT(If This Then That) automated service platform.