• Title/Summary/Keyword: Effective communication process

검색결과 709건 처리시간 0.024초

LED driver IC design for BLU with current compensation and protection function (전류보상 및 보호 기능을 갖는 BLU용 LED Driver IC설계)

  • Lee, Seung-Woo;Lee, Jung-Gi;Kim, Sun-Yeob
    • Journal of the Korea Academia-Industrial cooperation Society
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    • 제21권10호
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    • pp.1-7
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    • 2020
  • In recent years, as LED display systems are actively spread, study on effective control methods for an LED driver for driving the systems has been in progress. The most representative among them is the uniform brightness control method for the LED driver channel. In this paper, we propose an LED driver IC for BLU with current compensation and system protection functions to minimize channel luminance deviation. It is designed for current accuracy within ±3% between channels and a channel current of 150 mA. In order to satisfy the design specifications, the channel amplifier offset was canceled out by a chopping operation using a channel-driving PWM signal. Also, a pre-charge function was implemented to minimize the fast operation speed and luminance deviation between channels. LED error (open, short), switch TR short detection, and operating temperature protection circuits were designed to protect the IC and BLU systems. The proposed IC was fabricated using a Magnachip 0.35-um CMOS process and verified using Cadence and Synopsys' Design Tool. The fabricated LED driver IC has current accuracy within ±1.5% between channels and 150-mA channel output characteristics. The error detection circuits were verified by a test board.

Development of a Software Do-TRIZ for TRIZ Learning (트리즈 학습용 소프트웨어 Do-TRIZ 개발)

  • Kim, Eun-Gyung;Koo, Bon-Chul;Kim, Young-Jin
    • Journal of the Korea Institute of Information and Communication Engineering
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    • 제19권8호
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    • pp.1883-1892
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    • 2015
  • TRIZ is a theory of inventive problem solving. Recently the importance of creative capabilities is being emphasized and many successful cases using TRIZ are being introduced, therefore interest in TRIZ has been increasing. But TRIZ is not easy to learn alone compared to other creative thinking tools. Although it is effective to learn TRIZ through various cases, it is not easy for beginners to experience those many cases. Therefore, we developed a software called Do-TRIZ for TRIZ learning. Do-TRIZ provides descriptions and various examples of key concepts to make it easier for beginners to learn TRIZ. Also, the learners can add new cases continuously on Do-TRIZ. Especially, process-based problem solving modules have been implemented on Do-TRIZ, in order to make it possible to solve problems based on technical contradiction, physical contradiction, and IFR(Ideal Final Result). The learners can use the modules to solve their problems and to share the results. Also, we implemented Do-TRIZ Memo app that works with Do-TRIZ.

Technology Trends and Future Prospects of Satellite-Based Photovoltaic Electricity Potential (위성기반 태양광 발전가능량 산출기술 개발 동향 및 향후 전망)

  • Han, Kyung-Soo;Kim, Jinsoo
    • Korean Journal of Remote Sensing
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    • 제32권6호
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    • pp.579-587
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    • 2016
  • To obtain a stable energy supply and manage PhotoVoltaic (PV) systems efficiently, satellite imagery methods are being developed to estimate the solar PV potential. This study analyzed trends in the use of satellite imagery in solar PV and solar irradiation estimation technology. The imaging technology is used to produce solar energy resource maps. The trend analysis showed that the level of solar PV technology in Korea is 30% below that of advanced countries. It is impossible to raise such low-level technologies to the levels of advanced countries quickly. Intensive research and development is the only way to achieve the 80% technology level of advanced countries. The information produced in this process can contribute to the management of solar power plants. A valid technology development strategy would be to obtain effective data that can be used for fieldwork. Such data can be produced by estimating solar irradiation very accurately with several-hundred-meter resolution using Communication, Ocean, and Meteorological Satellites (COMS) and next-generation GEO-KOMPSAT 2A, developing core technologies for short- and medium-term irradiation prediction, and developing technologies for estimating the solar PV potential.

A Study on Folkcraft Processing Art and Designing Development-Especially Centerin garound Plant-Stalk Works (한국민속공예제품 가공기술 및 디자인 개발에 관한 제고방식-초경공예제품을 중심으로)

  • 남상교
    • Archives of design research
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    • 제2권1호
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    • pp.13-41
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    • 1989
  • The raw materials for plant-stalk-folkcrafts are cultivated in the whole country. Most Korean farmers, to increase their income, have produced mats and containers with various plants as a side line from very long ago. At first, they began from the instruments of life and then made folkart and at last get to manu\ulcornerfacturing of industrial folk craft. The folkcrafts, made of plant-stalk, which could nor conform to changing society, are partly declined and partly handed down as the traditions. The social change today, however, makes living conditions more speedy and multisided, accordingly the characteristics of demand also become in\ulcornerdividual and various. While the demend is various like this, suppliers cannot answer demendants' requirements, and consequently, the demand and profit cannot be increased. According to this, the purpose of this study is set up to give an answer to the situation that is at the traditional standstill, through an examination of the motives. I. The crafts of plant-stalk are made only in an organized relationship between agriculture, industry and art as it is compounded art of gathering raw material, manufacturing, producing, improv\ulcornering design and production conditions. It may be possible that a farmer gathers material and weaves it manually but in others, it is im\ulcornerpossible to refine, bleach and dye because the process requires a professional industrial treatment. It is impossible to make art works to a farmer as every farner does not always have aesthetic sense. Though a farmer or producer has these all abilities, it is not desirable to him from economical view. 2. The development or improvement is essential in many sides but the most important thing seems to he in design. According to reports, it is, howevt!r, fact that the crafts improved in design of existing works have more expanded the sales than newly developed works. Therefore, ir appears advisable to improve designs of existing things positively as they have merit of occupying a position already, but on the other hand, new crafts have to be also developed and the producer should grasp the proper time. 3. Building up an industrial complex to improve design with collecting the producing districts for this works scattered allover the country is very desirable for speedy communication, intensive educa\ulcorner tion or training, and effective guidance. 4. In producing for export abroad, before everything, must know the life environment, custom! and manners, main thought of the country, and then produce according to these. S. The crafts of plant-stalk are the fIrst industry in present but in the futher it should change intc second or third industry. 6. A synethetic organization for supporting side line should be established for effectiveness, and experts have to be secured and also the educational-industrial complex and activation of study should be preceded.

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A Development of Mechanism on Supply Chain Information Recognition among intelligent equipment for USN based construction supply chain management process (차세대 지능형 건설물류관리 프로세스 지원을 위한 지능형 장비 간 물류정보인식 메커니즘 개발)

  • Kwon, Sang-Hyuk;Shin, Tae-Hong;Chin, Sang-Yoon;Kim, Yea-Sang;Kwon, Soon-Wook
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 한국건설관리학회 2008년도 정기학술발표대회 논문집
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    • pp.763-766
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    • 2008
  • The success of a construction project depends on efficient construction supply chain and service informationalization as types and quantities of materials in construction industry geometrically increase because the size of the construction industry increasingly becomes huge, high-rise, and complex. However, the omission of data for each step and the lower effect occurs because of uncertainty and inaccuracy of information as compared to other industries. In addition, it takes many hours to manage the present material states. Currently, IT technology and various mobile devices are being developed through the automation system of next generation intelligent construction supply chain management for the effective supply chain information management but the confusion regarding the recognition and transmission of the supply chain information between the multiple materials and transportation equipment using the IT and wireless network technology occurred. Therefore, the objective of this study is to propose the recognition mechanism which can deduce processes which caused the confusion of the recognition and transmission with supply chain information and solve the problems originated from the processes so as to solve the problems related to the confirmation and the communication of the correct supply chain information.

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Development of Network Based MT Data Processing System (네트워크에 기반한 MT자료의 처리기술 개발 연구)

  • Lee Heuisoon;Kwon Byung-Doo;Chung Hojoon;Oh Seokhoon
    • Geophysics and Geophysical Exploration
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    • 제3권2호
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    • pp.53-60
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    • 2000
  • The server/client systems using the web protocol and distribution computing environment by network was applied to the MT data processing based on the Java technology. Using this network based system, users can get consistent and stable results because the system has standard analysing methods and has been tested from many users through the internet. Users can check the MT data processing at any time and get results during exploration to reduce the exploration time and money. The pure/enterprised Java technology provides facilities to develop the network based MT data processing system. Web based socket communication and RMI technology are tested respectively to produce the effective and practical client application. Intrinsically, the interpretation of MT data performing the inversion and data process requires heavy computational ability. Therefore we adopt the MPI parallel processing technique to fit the desire of in situ users and expect the effectiveness for the control and upgrade of programing codes.

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A Software Method for Improving the Performance of Real-time Rendering of 3D Games (3D 게임의 실시간 렌더링 속도 향상을 위한 소프트웨어적 기법)

  • Whang, Suk-Min;Sung, Mee-Young;You, Yong-Hee;Kim, Nam-Joong
    • Journal of Korea Game Society
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    • 제6권4호
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    • pp.55-61
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    • 2006
  • Graphics rendering pipeline (application, geometry, and rasterizer) is the core of real-time graphics which is the most important functionality for computer games. Usually this rendering process is completed by both the CPU and the GPU, and a bottleneck can be located either in the CPU or the GPU. This paper focuses on reducing the bottleneck between the CPU and the GPU. We are proposing a method for improving the performance of parallel processing for real-time graphics rendering by separating the CPU operations (usually performed using a thread) into two parts: pure CPU operations and operations related to the GPU, and let them operate in parallel. This allows for maximizing the parallelism in processing the communication between the CPU and the GPU. Some experiments lead us to confirm that our method proposed in this paper can allow for faster graphics rendering. In addition to our method of using a dedicated thread for GPU related operations, we are also proposing an algorithm for balancing the graphics pipeline using the idle time due to the bottleneck. We have implemented the two methods proposed in this paper in our networked 3D game engine and verified that our methods are effective in real systems.

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A Study on the Cut Detection System of Video Data using MSE (MSE를 이용한 동영상데이터의 컷 검출시스템에 관한 연구)

  • Kim Dan-Hwan;Joung Ki-Bong;Oh Moo-Song
    • Journal of the Korea Institute of Information and Communication Engineering
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    • 제8권7호
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    • pp.1399-1404
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    • 2004
  • The development of computer technology and the advancement of the technology of information and communications spread the technology of multimedia and increased the use of multimedia data with large capacity. Users can grasp the overall video data and they are able to play wanted video back. To grasp the overall video data it is necessary to offer the list of summarized video data information. In order to search video efficiently an index process of video data is essential and it is also indispensable skill. Therefore, this thesis suggested the effective method about the cut detection of frames which will become a basis of an index based on contents of video image data. This suggested method was detected as the unchanging pixel rotor intelligence value, classified into diagonal direction. Pixel value of color detected in each frame of video data is stored as A(i, i) matrix - i is the number of frames, i is an image height of frame. By using the stored pixel value as the method of UE(Mean Square Error) I calculated a specified value difference between frames and detected cut quickly and exactly in case it is bigger than threshold value set in advance. To carry out an experiment on the cut detection of lames comprehensively, 1 experimented on many kinds of video, analyzing and comparing efficiency of the cut detection system.

A Study on Research Data Creation and Management by Researchers in Mechanical Engineering (기계공학분야 연구자들의 연구데이터 생산과 관리에 관한 연구)

  • Park, Yunmi;Kim, Jihyun
    • Journal of Korean Society of Archives and Records Management
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    • 제21권4호
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    • pp.137-162
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    • 2021
  • This study aimed to examine the perception and experience of researchers in the field of mechanical engineering on research data creation and management, and suggest implications for research data management and services in the field. Research data management and services of domestic and foreign research institutes were investigated, and in-depth interviews were conducted with researchers belonging to domestic mechanical engineering research institutes to analyze the perception and conduction of research data creation and management according to four major categories: "research data, accountable conducting of research and compliance with research ethics, utility and effectiveness of research data management, and the value of sharing research data." To ensure effective research data management and services in mechanical engineering, it is necessary to conduct a data investigation on the process, type, and form of production to collect explicit metadata and implicit contextual information. It is also necessary to propose a plan to recognize research results using the publication of data journals and to prepare infrastructure such as a cloud-based system that supports safe data management and communication between researchers. In addition, it suggests that it is important for various officials in the research field to allocate roles and responsibilities for research data management and services at the organizational level.

A Study on the Improvement of the Effectiveness of Safety and Health Education for Supervisors (관리감독자 대상 안전보건교육의 실효성 증진 방안 연구)

  • Lee, Myeong-Gu;Jeong, Myeong-Jin;Kim, Chang-Wook
    • The Journal of the Convergence on Culture Technology
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    • 제8권4호
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    • pp.361-366
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    • 2022
  • Although safety and health education is reported to be very effective in reducing the industrial accident rate, the demand for improvement in safety and health education is also very high. The purpose of this study is to present measures to enhance effectiveness by investigating the effectiveness and demand for safety and health education for supervisors among the safety and health education systems. As a result of the study, it was found that the satisfaction and effectiveness of safety and health education were low. As the most important competency required for supervisors, it was investigated that job competency was the ability to discover harmful risk factors and formulate disaster prevention measures in the work process and work environment, and base competency was communication ability. In addition to designated safety and health education institutions, there was a high demand for recognition as education completion time even when professional education by job was completed by other professional education institutions. Therefore, in safety and health education for supervisors, it is necessary to focus on major items to improve supervisors' job competency and base competency, and to recognize that they have completed education at a wide range of educational institutions. We believe that it can increase the supervisor's capacity for safety management and improve the effectiveness of safety and health education.