• 디지털산업정보학회논문지
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• 제12권1호
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• pp.13-26
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• 2016

Service and technology for the future hyper-connected society, which is every information receive through the mobile internet, will be an Internet of Things. Thus, it is mandatory to derive key standardization work item and establish strategy for the global business with the standardization of device and service platform by the application service. In this study, by analyzing the domestic and international market trends, state of technical development, and standardization of technology, we identified the open platform is the stepping stone for achieving the goal which is establishing the virtuous circulation of IoT ecosystem. Also, we defined emphasized key standardization work item for achieving the open platform are network, server, access authentication, billing system, and software platform. After that, we proposed future strategy direction of standardization. This research could be contribute to the IoT service diffusion by realizing IP communication among low power wireless terminals and implementing light-weight standard internet protocol.

• 디지털산업정보학회논문지
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• 제14권4호
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• pp.163-168
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• 2018

In this paper presents comparison of performance of flexible solar cells construction applied to curtain walls. The proposed paper compares power generation for curtain walls of various shapes using flexible PV. Through the comparison of performance, the power generation was compared by installing various types of flexible PV on the air layer of double windows. By comparing the measured power generation, it is possible to find an optimal flexible PV shape that can be applied to a curtain wall. Flexible PV installation was divided into diagonal, S and W shapes. As a result of comparison, the amount of power generation when there was no flexure of flexible PV was large. Also, as the angle with the light source increased, the power generation decreased. Therefore, it is necessary to study the structure which can fix the PV more than the flexible PV and to be able to direct the sun without distortion.

• ETRI Journal
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• 제41권1호
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• pp.23-31
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• 2019

Since the late 20th century, there has been rapid development in the display industry. Only 30 years ago, we used big cathode ray tube displays with poor resolution, but now most people use televisions or smartphones with very high-quality displays. People now want images that are more realistic, beyond the two-dimensional images that exist on the flat screen, and digital holography-one of the next-generation displaysis expected to meet that need. The most important parameter that determines the performance of a digital hologram is the pixel pitch. The smaller the pixel pitch, the higher the level of hologram implementation possible. In this study, we fabricated the world-smallest $3-{\mu}m$-pixel-pitch holographic backplane based on the spatial light modulator technology. This panel could display images with a viewing angle of more than $10^{\circ}$. Furthermore, a comparative study was conducted on the fabrication processes and the corresponding holographic results from the large to the small pixel-pitch panels.

• 디지털융복합연구
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• 제10권6호
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• pp.41-47
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• 2012

오늘날 일자리 창출은 최대 국정 과제라 해도 과언이 아니다. 그러나 정부의 갖은 노력에도 불구하고 일자리는 쉽게 창출되지 않는다. 그 원인 중의 하나는 일자리에 대한 통계의 문제점과 그로 인한 정책 오류라 할 수 있다. 따라서 본 연구는 현 정책 기반인 일자리 통계의 문제점을 점검하고 정확한 일자리 통계와 일자리 창출역량을 기반으로 일자리 창출 정책을 실행하도록 하기 위해 일자리창출력을 분석하는 데에 목적을 가지고 있다. 특히 본 연구는 여러 산업 분야 중 최근 일자리 창출 측면에서 그 중요도가 더욱 커진 SW산업의 일자리창출력을 집중적으로 조명하기 위해 일자리 통계의 현황과 과제의 점검하고 일자리 증가 추이와 일자리창출효과 등의 분석을 통해 SW산업의 일자리 창출력을 분석해보고자 한다.

• 한국인쇄학회지
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• 제31권1호
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• pp.15-37
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• 2013

Split digital printing into interior and outdoors on present advertisement. When is printing machine for interior mainly, use ink of water-based type. Equipment of this type embodies high resolution, but ink special quality light stability is weak. Also, when is printing machine for outdoors, printing machines of solvent or UV type are used because of water resistance and light stability. This printing machines hard to embody ink special quality high resolution mainly. And because outside is far visibility range, is uncommon in case high resolution requires embodiment. Therefore, high resolution of inside is water-based type considering this item and outside printing machine of low resolution solvent type mainly announce. Also, divide into eco-friendly latex ink type that is announced to water-based, solvent, UV according to ink type and the latest market using in occasion of digital printing machine used as advertisement industry. Color management that is been consistent of original image has a lot of difficulties by using substrate that is also various to digital printing machine for such various advertisement. But, consumers is rising realization about color or desire about quality improvement of color gradually in interior outside advertisement market. So, require solution method. Therefore, in this paper, eco-friendly ink use applied device calibration through linearization in done latex digital printing machine to basis. And studied right color management plan of digital printing for interior outside advertisement through three steps such as G7 calibration application and ICC profile application.

• Nuclear Engineering and Technology
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• 제55권3호
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• pp.1045-1051
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• 2023

In this study, we fabricated a liquid light-guide-based radiation sensor with a LaBr₃:Ce scintillator for remote gamma-ray spectroscopy. We acquired the energy spectra of Cs-137 and Co-60 using the proposed sensor, estimated the energy resolutions of the full energy peaks, and compared the scintillation light output variations. The major peaks of the radionuclides were observed in each result, and the estimated energy resolutions were similar to that of a general NaI(Tl) scintillation detector without a liquid light guide. Moreover, we showed the relationships of energy resolution and analog-to-digital channel regarding the number of photoelectrons produced and confirmed the effects of light guide length on remote gamma-ray spectroscopy. The proposed sensor is expected to be utilized to perform remote gamma-ray spectroscopy for distances of 3 m or more and would find application in many fields of nuclear facilities and industry.

• 한국기계가공학회지
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• 제6권1호
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• pp.7-12
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• 2007

The optic industry is a high value-added advanced technology industry combined with the precision machine industry and the digital electronics industry. The aspheric lens, one of optic parts, is a key technology having a significant influence on the performance of optic equipment. So this study relates to designing an aspheric lens to which a ray-tracing method is applied. In the ray-tracing method, a refractive index of material is used, which take an advantage that the location of a light source and incident angle can be fixed, unlike the ray back-tracing scheme.

• 디지털콘텐츠학회 논문지
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• 제14권1호
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• pp.97-109
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• 2013

오늘날 콘텐츠 산업의 가치와 중요성은 급속히 증대되고 있다. 특히 스마트 기기의 대중화로 인해 콘텐츠와 신기술들이 결합된 융합형 콘텐츠의 소비가 증가하고 있다. 이러한 융합형 콘텐츠를 기반으로 하는 차세대 융합형 콘텐츠 산업은 미래 산업을 선도하고 국가성장 동력원으로 인식되고 있다. 그러나 차세대 융합형 콘텐츠 분류체계가 아직 정립되지 않고 있는 상황이어서 산업의 범위를 규정하는데 어려움이 발생한다. 효과적으로 신산업 발굴하기 위해서 현재 콘텐츠, 기술과 산업을 재조명하여 콘텐츠 분야에서 융합트렌드를 이끌어갈 요인을 발견하고 융합 콘텐츠의 형태가 무엇인지를 파악할 필요가 있다. 존재하거나 새롭게 나타나는 융합기술 기반의 콘텐츠 산업 분류를 시도하는 것은 차세대 융합형 콘텐츠 산업 발굴을 위한 초기 연구로 중요하다. 이를 위해 본 연구에서는 차세대 융합형 콘텐츠 산업군을 발견하기 위하여 융합 콘텐츠 속성들을 분석하였고, 이를 바탕으로 컨조인트 분석을 실시하였다. 그리고 컨조인트 분석을 통해 나타난 주요 속성을 기반으로 차세대 융합 산업 군을 제안한다.

• 한국정보통신학회논문지
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• 제16권6호
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• pp.1285-1290
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• 2012

3D 산업이 발달하고 3D와 관련된 콘텐츠 및 장비가 점차 보편화 되면서 사람들은 3D 다음 세대의 미디어 및 서비스에 대한 관심을 보이고 있다. 많은 사람들은 그 강력한 후보자로 디지털 홀로그램을 생각하고 있다. 홀로그램 기술은 일반적인 비디오 시스템들과 마찬가지로 획득(혹은 생성), 처리, 그리고 재생으로 나누어질 수 있다. 본 논문에서는 하이브리드 영상획득 장치를 이용한 디지털 홀로그래픽 디스플레이 시스템에 대해 논의하고 새로운 시스템의 구조를 제안한다. 제안한 방식을 통해서 다양한 해상도를 갖는 디스플레이, 수신단의 연산 능력, 그리고 네트워크의 대역폭에 따라 적응적으로 홀로그래픽 비디오를 서비스할 수 있다는 것을 보였다.

• ETRI Journal
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• 제40권3호
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• pp.366-375
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• 2018

Recently, techniques involving head-mounted displays (HMDs) have attracted much attention from academia and industry owing to the increased demand for virtual reality and augmented reality applications. Because HMDs are positioned near to users' eyes, it is important to solve the accommodation-vergence conflict problem to prevent dizziness. Therefore, holography is considered ideal for implementing HMDs. However, within the Nyquist region, the accommodation effect is limited by the space-bandwidth-product of the signal, which is determined by the sampling number of spatial light modulators. In addition, information about the angular spectrum is duplicated over the Fourier domain, and it is necessary to filter out the redundancy. The size of the exit-pupil of the HMD is limited by the Nyquist sampling theory. We newly propose a holographic HMD with an expanded exit-pupil over the Nyquist region by using the time-multiplexing method, and the accommodation effect is enhanced. We realize time-multiplexing by synchronizing a high-speed digital micromirror device and a liquid-crystal shutter array. We also demonstrate the accommodation effect experimentally.