• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2010.11a
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• pp.43-46
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• 2010

스마트 폰의 선풍적인 인기에 힘입어 TV 산업에서도 스마트TV가 출현해 시장 영역을 넓히고 있다. 이에 따라 TV 리모컨 또한 새로운 방식의 유저 인터페이스를 지원하는 하나의 스마트 리모컨으로 업그레이드 되고 있으며, 스마트 리모컨을 통한 홈 멀티미디어 디바이스의 통합 제어와 미디어 공유에 대한 여러 가지 시도가 이루어지고 있다. 이에 본 논문은 DLNA 환경 속 스마트 리모컨과 TV 디바이스의 역할에 대해 재 정의하고, 이를 기반으로 DLNA 및 UPnP 디바이스 아키텍처에 제시된 컨트롤 포인트와 디바이스 간 제어 및 미디어 공유 절차에 따라 스마트 리모컨을 통한 TV의 제어 기법을 제안한다. 제안된 스마트 리모컨을 통한 TV의 제어는, 크게 사용자와 무관한 백그라운드 스레드로 처리될 제어 준비 단계와 사용자의 입력을 통해 실질적인 제어를 수행하는 제어 단계로 나뉘고, 각각의 단계에 해당하는 UPnP 미디어 네트워크 단계에 맞춰 진행된다. 제안된 DLNA 환경 속 TV 제어 방법의 구현을 위해서는 선행적으로 TV OSD 제어를 위한 코드에 연동해 TV 디바이스 서비스 서술자의 확장이 이루어져야 할 것이다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2016.06a
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• pp.313-316
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• 2016

현행 수화방송서비스는 방송영상 화면위에 수화영상을 덧씌우는 방식으로 송출하기 때문에 수화영상의 크기가 작고 수화 영상을 제거하거나 크기 위치 조정이 불가능하여 청각장애인의 TV 시청에 불편함을 초래하고 있다. 청각장애인의 방송접근권 확대와 일반시청자의 TV 시청환경 제고를 위해 스마트 수화방송서비스는 방송 인터넷 융합 하이브리드 방식으로 방송영상과 수화영상을 방송망과 인터넷망으로 각각 송출하고 TV수신기가 두 영상의 동기화를 처리하고 앱을 통해 수화영상의 크기, 위치 조정 및 제거 서비스를 제공한다. 본 논문에서는 방송 인터넷 융합 하이브리드 방식인 스마트 수화방송서비스의 표준 기술 및 동기화 방식을 소개하고 스마트 수화방송 시험환경 및 동기화 지연시간 측정 결과를 소개한다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2017.06a
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• pp.18-21
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• 2017

클라우드 방송은 서버에서 방송 서비스를 구동한 후 실시간으로 실행 화면이나 정보를 TV 셋톱박스로 전송하는 가상화 방송 서비스로 많은 방송 사업자들의 관심을 끌고 있으며, 이미 상용화를 진행 중인 사업자도 있다. 한국정보통신기술협회(이하, TTA)에서는 클라우드 방송 서비스를 특정 사업자에 종속된 기술이 아닌 개방형 기술로 확장시키고자 "개방형 클라우드 기반 스마트 방송 플랫폼 (TTAK.KO-07.0129)"표준(이하, 클라우드 방송 1.0 표준)을 2016 년 12 월에 제정하였다. 본 논문에서는 클라우드 방송 1.0 표준의 다양한 기술범위 중 표준기반 서비스를 실행하고 서비스와 플랫폼 사이의 인터페이스 등을 정의한 클라우드 방송 1.0 플랫폼 애플리케이션 실행환경에 대한 내용과 그 구현에 대하여 소개한다.

• Proceedings of the KIEE Conference
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• 2004.05a
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• pp.147-149
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• 2004

Although most of the people have studied English for a long time, their English conversation capability is low. When we provide them portable conversational-type English learners by the application of computer and information process technology, such portable learners can be used to enhance their English conversation capability by their conventional conversation exercises. The core technology to develop such learner is the development of a voice recognition and synthesis module under an embedded environment. This paper deals with voice recognition and synthesis, prototype of the learner module using a DSP(Digital Signal Processing) chip for voice processing, voice playback function, flash memory file system, PC download function using USB ports, English conversation text function by the use of SMC(Smart Media Card) flash memory, LCD display function, MP3 music listening function, etc. Application areas of the prototype equipped with such various functions are vast, i.e. portable language learners, amusement devices, kids toy, control by voice, security by the use of voice, etc.

• International journal of advanced smart convergence
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• v.10 no.3
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• pp.72-80
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• 2021

Metaverse is an immersive 3D virtual environment, a true virtual artificial community in which avatars act as the user's alter ego and interact with each other. If we do not manage the hype for the metaverse, which has recently been receiving a surge in interest, the metaverse will fail to cross the chasm. In this study, to provide stakeholders with insights for the successful introduction and growth of the 3D immersive next-generation virtual world, metaverse, we analyzed user-side interest, media-side interest, and research-side interest. For this purpose, in this study, search traffic, news frequency and topic, and research article frequency and topic were analyzed. The methodology and results of this study are expected to provide insight for the stable success of metaverse transformation and the coexistence of the real world and the virtual world through hyper-connection and hyper-convergence.

• International journal of advanced smart convergence
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• v.9 no.4
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• pp.156-166
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• 2020

In this paper, to improve spectral efficiency and mitigate interference in coordinated millimeter-wave systems, we proposes an optimal user group and beam selection scheme. The proposed scheme improves spectral efficiency by mitigating intra- and inter-cell interferences (ICI). By examining the effective channel capacity for all possible user combinations, user combinations and beams with minimized ICI can be selected. However, implementing this in a dense environment of cells and users requires highly complex computational abilities, which we have investigated applying multiclass classifiers based on machine learning. Compared with the conventional scheme, the numerical results show that our proposed scheme can achieve near-optimal performance, making it an attractive option for these systems.

• International Journal of Advanced Culture Technology
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• v.9 no.4
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• pp.295-301
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• 2021

Digital media technology is gradually developing with the development of convergence quaternary industrial technology and mobile devices. The combination of deep learning and augmented reality can provide more convenient and lively services through the interaction of 3D virtual images with the real world. We combine deep learning-based pose prediction with augmented reality technology. We predict the eight vertices of the bounding box of the object in the image. Using the predicted eight vertices(x,y), eight vertices(x,y,z) of 3D mesh, and the intrinsic parameter of the smartphone camera, we compute the external parameters of the camera through the PnP algorithm. We calculate the distance to the object and the degree of rotation of the object using the external parameter and apply to AR content. Our method provides services in a web environment, making it highly accessible to users and easy to maintain the system. As we provide augmented reality services using consumers' smartphone cameras, we can apply them to various business fields.

• Journal of Digital Contents Society
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• v.17 no.5
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• pp.339-348
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• 2016

While the development of digital media has positive aspects of knowledge enlargement and a new communication channel, it also demonstrates a lot of unexpected defects, such as personal isolation, addiction, obsession or Attention Deficit Hyperactivity. Thus, the author considers it is urgent to develop the contents specifically designed for children in this new digital environment and would like to propose the combined Children's device and contents using the new concept of Mixed Reality. The Mixed Reality that mixes real world and virtual world provides the opportunity that can experience the new concept of play education by using touchable interface of children's real life toy cars together with the virtual world in the smart phones. This Mixed Reality that is extended from sole senses will lead the children to develop the concentration, sense of reality and imagination and also to experience the enlarged play and education concept.

• International journal of advanced smart convergence
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• v.4 no.2
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• pp.94-102
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• 2015

Optical camera communication (OCC) is an extension of Visible Light Communication. Different from traditional visible light communication, optical camera communications is an almost no additional cost technology by taking the advantage of build-in camera in devices. It was became a candidate for communication protocol for IoT. Camera module can be easy attached to IoT device, because it is small and flexible. Furthermore almost smartphone equip one or two camera for both back and font side with high quality and resolution. It can be utilized for receiving the data from LED or positioning. Actually, OCC combines illumination and communication. It can supply communication for special areas or environment where do not allow Radio frequency such as hospital, airplane etc. There are many concept and experiment be proposed. In this paper we proposed utilizing Android smart-phone camera for receiver and introduce new approach in modulation scheme for LED at transmitter. It also show how Manchester coding can be used encode bits while at the same time being successfully decoded by Android smart-phone camera. We introduce new data frame format for easy decoded and can be achieve high bit rate. This format can be easy to adapt to performance limit of Android operator or embedded system.

• International journal of advanced smart convergence
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• v.2 no.2
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• pp.1-6
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• 2013

Convergence in technology and media makes it possible to augment nurturing by making blended infrastructures with new digital resources available in learning environments at schools. A game-based provision of educationally-valuable content within a collective, virtual environment combined with an analysis of events in the game after it has been played (blended nurture environment) may help to better communicate human values especially where old-fashioned discussion methods fail or do not fulfill the promise of effective, educational institution-based methods of bringing up. In this paper we discuss the use of behavioural metaphors in game-based blended-nurture scenarios for computer games and pedagogical-psychological tests. Upbringing demands an active intervention in the process of children growing up and the courage to place higher expectations on ourselves and our own lifestyles. Decisions and the behaviour of the younger generation are often irrational and the resulting effects can have destructive consequences. Nowadays, games take on the role of modern storytellers. With the help of complex analogies in games, a variety of situations can be depicted in an eye-catching way and later discussed.