• Title/Summary/Keyword: N-스크린

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Multicast Algorithm based on Visual Information over Wireless N-Screen Networks (시각적 정보량 기반의 무선 N-스크린 환경에서의 멀티캐스트 기법)

  • Lee, In-Woong;Kwon, Beom;Oh, Hee-Seok;Lee, Kwang-Hyun;Oh, Taegeun;Lee, Sang-Hoon
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2013.06a
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    • pp.43-44
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    • 2013
  • 최근 멀티미디어 콘텐츠(영화, 음악 등)를 스마트폰이나 태블릿 PC, 랩탑 등의 기기에서 끊김 없이 연속적으로 받을 수 있는 N 스크린에 대한 관심이 커지고 있다. 기존에도 화질에 대한 향상을 위한 부선 자원 관리 문제를 푼 경우는 있었지만 다양한 기기의 해상도를 고려하는 N스크린 서비스의 화질 불균형 문제를 해결하고자 하는 노력은 부족했다. 본 논문은 N스크린 멀티캐스트 환경에서 기기의 해상도와 각 그룹마다 시용자의 만족도를 고려한 다중 레이어의 중요도를 새롭게 정의하고, 정의된 중요도에 따라 각 멀티캐스트 그룹의 통신 대역폭과 모듈레이션을 조정해 사용자의 만족도를 최대화하는 과정을 소개하고 있다. 또한 시뮬레이션 과정을 통해서 시각적 중요도를 가장 많이 증가시킬 수 있는 방법으로 자원을 할당하는 것이 실제로 멀티캐스트를 그룹 구성원들에게 화질의 이득을 가져오는 것을 확인하였다.

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Development of Smart Health Client based on Real-Time Health Information Sharing Framework (실시간 의료 정보 공유 프레임워크 기반의 스마트 의료 클라이언트 개발)

  • Im, Seokjin;Hwang, Hee-Joung
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.14 no.3
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    • pp.131-137
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    • 2014
  • The advent of various smart devices like smart phones and tablets has triggered the changes in information systems of medical centers. Especially, diversifying devices of clients and the need for N-Screen services increase necessities for sharing effectively information in medical centers. However, developing and managing clients for each OS like iOS and Android cost high and make it hard to provide seamless service through multi devices. Also, in the aspect of security it is necessary to share information between clients and health information systems. In this paper, we develop a smart health information client based real-time health information sharing framework. The developed client is based on hybrid app, that enables to share information in real time between N devices through health information sharing framework and to adopted to developments of various clients.

Development of Web Application Based on N-screen for Play Activities of Children with Developmental Disorder (발달장애 아동의 놀이 활동을 위한 N-스크린 기반의 웹앱 개발)

  • Kang, Jung Bae;Kim, Jin Hee;Kim, Chang Geol;Song, Beong Seop
    • Journal of Korea Society of Industrial Information Systems
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    • v.18 no.4
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    • pp.1-8
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    • 2013
  • In the modern society, instructional methods using diverse media have appeared thanks to the development of Information & Communication Technology, and applicability of such instructional methods has been fully corroborated. However, customized contents allowing for disabled children's environment are still insufficient. Hence, this study produced educational contents of play activities for children with developmental disability, through applying N-screen technology, IT technology that can provide the same contents via a variety of digital media. The produced contents allow programs to be set up according to a child's individual characteristics and be carried out anywhere and anytime via an Internet-enabled digital device. Further, the developed contents were produced so that they could be accessed from a child's various environment (home, school, etc.) via a PC, a smart phone, a portable from a child's various environment (home, school, etc.) via a PC, a smart phone, a portable device, etc. and that the same educational program could be conducted in linkage at home, school, etc. Three children with Intellectual disability and autism spectrum disorder were applied to the manufactured content. As a result, Content interaction between interaction between teachers and students in play training could use as a medium.In addition, the children's ability to select the appropriate components and reinforcements, special education professionals have used the content of the interviews are helpful in mediation than the existing content.

Six Major Shifts and Implications of the Video Distribution Ecosystem in the Era of N-screen and OTT Services: A case of US media industry (N-/멀티스크린 및 OTT 서비스시대의 미디어 생태계 변환의 여섯 가지 특징과 함의: 미국 사례)

  • Han, Gwang Jub James
    • The Journal of the Korea Contents Association
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    • v.14 no.8
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    • pp.342-364
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    • 2014
  • The purpose of this paper is to provide an answer for the following question: What are the major shifts and implications of the unprecedently competitive and rapidly changing media ecosystem in the era of N-screen and OTT services? I've attempted to understand the complex and competitive nexus among media from an historical context by focusing on the displacement vs. complement thesis. The TPC model by Han has been employed for the analysis of the current dynamics of US media industries by triangulating three areas: Technology/industry, public policy and consumer/culture. More specifically, the US media landscape is initially divided into two competitive turfs - the competitors equipped with OTT services and the legacy media industry, and then the traditional media industry was grouped again into PayTV group(telecom service providers with IPTV and mobile TV, cable/Satellite TV networks) and Free (over-the-air) TV networks. Six major shifts were identified by the analysis: power shift in telecom carriers, power shifts in TV industry, Telecom/OTT partnership, time shifts, place shifts, and finally business model shifts.

The Development of Filter for Environmental Improvement in Land Based Seawater Fish Farm II. Purification efficacy of Inlet and Outlet Seawater by Filter (필터의 개발을 통한 해수 육상수조식 양식장의 환경개선에 관한 연구 II. 필터 운행에 따른 유입수 및 배출수의 정화효과)

  • KANG Ju-Chan;PARK Soo-Il;KIM Seoung-Gun
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.31 no.6
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    • pp.914-919
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    • 1998
  • This study was conducted to evaluate the purification efficacy by filter and ultra violet (UV) irradiation against inlet and outlet seawater of the land based fish farm. Purification efficacies for inlet seawater (50$\ell$/min) has been examined with filter of 60$\mu$m pore size and UV irradiation at an average dose 0.5 mWS/$cm^2$ for 5 months. For outlet seawater filter of 90 $\mu$m pore size only was used. Temperature, salinity, pH, $NO_3-N,\;NO_2-N,\;NH_4-N,\;PO_4-P$, DO and COD of inlet and outlet seawater in the system were not influenced. However, the removing rate of suspended solid and turbidity of inlet seawater were appeared to be $48.7\~65.6\%$ (average $51.9\%$) and $33/3\~42/5\%$ (average $34.8\%$) after passing through screen filter respectively. Also, germicidal efficiency to the total bacteris and Vibrio species were $16.7\~20.2\%$ (average $19.2\%$) $20.0\~21.9\%$ (average $20.9\%$) respectively after passing through UV irradiation. After passing through drum filter of 90$\mu$m pore size, suspended solid and turbidity of outlet seawater were appeared to be $42.7\~52.6\%$ (average $46.9\%$), $27.7\~29.9\%$ (average $28.3\%$), respectively.

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N-Screen Service using Grid-Computing on Smart TV Network (스마트 TV의 그리드 컴퓨팅을 활용한 N-Screen 서비스)

  • Cha, Sang-Jin;Kang, Jun-Hee;Park, Seung-Bo;Kim, Hyun-Sik;Jo, Geun-Sik
    • Proceedings of the Korean Society of Computer Information Conference
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    • 2012.01a
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    • pp.83-85
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    • 2012
  • 네트워크 기술의 발전으로 모바일 기기 콘텐츠 서비스의 일종인 N-Screen이 활발해 지고 있다. 이러한 N-Screen 서비스는 TV, PC 그리고 모바일 기기(스마트폰, 태블릿)등의 다양한 스크린에 소비되는 콘텐츠를 제공하는 것이다. 그러나 현재 대부분의 서비스들은 콘텐츠를 소비하는 기기에 맞게 인코딩 된 다수의 콘텐츠를 보유하고 있어야 한다. 하지만 현존하는 다양한 디스플레이 규격과 코덱에 적합하도록 콘텐츠를 변환하여 보관하는 것은 불가능한 상황이다. 따라서 현재 대부분의 서비스들은 대표적인 일부의 장비에 대한 콘텐츠만을 제공하고 있다. 또한 다양한 규격의 기기에 맞게 콘텐츠를 변환하여 제공하기 위해서는 고도의 컴퓨팅 파워가 요구된다. 따라서 본 논문은 스마트 TV에 그리드 컴퓨팅 기술을 적용하여 다양한 규격의 기기에 N-Screen 서비스를 제공하는 기술을 제안하고 설명한다.

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Visibility based N-Body GPU Collision Detection (가시화 기반 N-body GPU 충돌 체크 방법)

  • Sung, Mankyu
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2022.10a
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    • pp.400-403
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    • 2022
  • This paper propose a GPU-based N-body collision detection algorithm using LBVH (Linear Bounding Volume Hierarchy) technique. This algorithm introduces a new modified Morton code scheme where the codes use an information about how much each body takes a space in the screen space. This scheme improves the GPU sorting performance of the N-Body because it culls out invisible objects in natural manner. Through the experiments, we verifies that the proposed algorithms can have at least 15% performance improvement over the existing methods

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The Evaluation and Fabrication of Radiation Phosphor Screen for Non-destructive Testing using the Special Room Temperature Gel-printing Method (상온 겔프린팅 기법을 이용한 비파괴 검사용 방사선 증감지 제작 및 평가)

  • Lee, Jun Haeng
    • Journal of the Korean Society of Radiology
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    • v.14 no.4
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    • pp.391-396
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    • 2020
  • In this study, we developed a phosphor film screen that can be applied to radiographs during non-destructive testing using Gd2O2S:Tb phosphor compounds. The image uniformity of the fabricated phosphor screen film was analyzed by FE-SEM, RMS and RDS analysis. In addition, the tensile strength, elongation, and modulus of elasticity of the Gd2O2S:Tb phosphor screen were evaluated by measuring the stress-strain characteristic curve. As a result, it was evaluated that the RSD value had an excellent image uniformity within 10% of the evaluation criteria. In addition, as a result of evaluation of physical properties, the tensile strength was 1.1760 N/㎟, the tensile strength at break was 1.1515 N/㎟. These results suggest that the Gd2O2S:Tb phosphor screen fabricated using the room temperature gel-printing method could be applied to digital radiography detectors for radiography.