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정하영(Hayoung Jeong),정원영(Wonyoung Chung),이용석(Yong-surk Lee) 한국통신학회 2011 韓國通信學會論文誌 Vol.36 No.1
본 논문에선 분산 메모리 아키텍처를 사용하는 멀티프로세서 시스템에서 메시지 전달을 지원하는 하드웨어 MPI(Message Passing Interface) 유닛을 설계하였다. 데이터 전송 동기화 및 데이터 전송, 완료까지의 과정을 하드웨어 MPI 유닛이 담당하여 동기화에 따른 오베헤드를 경감시켰다. 또한 동기화 메시지를 저장 관리하는 요청큐(Request Queue), 준비 큐(Ready Queue), 예약 큐(Reserve Queue)를 내장하여 병렬적으로 입력받은 동기화 메시지를 관리하고 비순차적 종료(out of order completion)을 지원한다. BMF(Bus Functional Medel)을 제작해 제안한 구조에서의 전송 대역폭 성능을 확인한 결과 다대다 통신에서 25%이상의 성능 향상이 있음을 확인할 수 있었다. 그후 HDL로 기술된 하드웨어를 Magnachip 0.18 공정 라이브러리에서 합성하였으며 프로토 타입 chip으로 제작하였다. 제안한 MPI 유닛은 전체 칩 사이즈의 1%이하의 크기로 높은 성능 향상을 기대할 수 있어, 저비용 설계와 확장성 측면에서 임베디드 MPSoC(Multi-Processor System-on-Chip)의 전체적인 성능을 높이는데 유용하다. In this paper, we propose a novel hardware MPI(Message Passing Interface) unit which supports message passing in multiprocessor system which use distributed memory architecture. MPI Hardware unit processes data synchronization, transmission and completion, and it supports processor non-blocking operation so it reduces overhead according to synchronization. Additionally, MPI hardware unit combines ready entry, request entry, reserve entry which save and manage the synchronized messages and performs the multiple outstanding issue and out of order completion. According to BFM(Bus Functional Model) simulation result, the performance is increased by 25% on many to many communication. After we designed MPI unit using HDL, with synopsys design compiler we synthesized, and for synthesis library we used MagnaChip 0.18㎛. And then we making prototype chip. The proposed message transmission interface hardware shows high performance for its increase in size. Thus, as we consider low-cost design and scalability, MPI hardware unit is useful in increasing overall performance of embedded MPSoC(Multi-Processor System-on-Chip).
개인용 정보 단말장치를 위한 내장형 멀티스레딩 프로세서 구조
정하영(Hayoung Jeong),정원영(Wonyoung Chung),이용석(Yong-surk Lee) 大韓電子工學會 2010 電子工學會論文誌-SD (Semiconductor and devices) Vol.47 No.9
본 논문은 스마트폰, 타블렛 PC와 같은 개인용 정보 단말장치 응용에 적합한 프로세서 구조를 제안한다. 고성능 내장형 프로세서 개발은 아키텍쳐의 변화가 필요하고, 오버헤드가 크기 때문에, 업계에서는 높은 동작 주파수의 고성능 내장형 프로세서의 개발에 전념하고 있다. 고성능 프로세서 구조 중 비순차 슈퍼스칼라(out-of-order superscalar)는 하드웨어 복잡도가 과도하게 증가하며, 그에 비해 성능 향상이 적으므로 내장형 응용에 적합하지 않다. 따라서 하드웨어 복잡도가 낮은 고성능 내장형 프로세서 구조의 개발이 필요하다. 본 논문에서는 스칼라, 슈퍼스칼라, 멀티프로세서 방식에 비하여 복잡도가 낮은 새로운 SMT(Simultaneous Multi-Threading) 구조를 제안한다. 최근의 개인용 정보단말기는 많은 작업을 동시에 수행하기 때문에, SMT나 CMP는 이에 적합한 구조라 할 수 있다. 또한, 시뮬레이션 결과 SMT는 여러 프로세서 구조 중 가장 효율이 높은 프로세서로 보인다. In this paper, we proposed a processor architecture that is suitable for next generation embedded applications, especially for personal information devices such as smart phones, tablet PC. Latest high performance embedded processors are developed to achieve high clock speed. Because increasing performance makes design more difficult and induces large overhead, architectural evolution in embedded processor field is necessary. Among more enhanced processor types, out-of-order superscalar cannot be a candidate for embedded applications due to its excessive complexity and relatively low performance gain compared to its overhead. Therefore, new architecture with moderate complexity must be designed. In this paper, we developed a low-cost SMT architecture model and compared its performance to other architectures including scalar, superscalar and multiprocessor. Because current personal information devices have a tendency to execute multiple tasks simultaneously, SMT or CMP can be a good choice. And our simulation result shows that the efficiency of SMT is the best among the architectures considered.
하이브리드차량의 연비향상을 위한 경제 운전 제어 기술 개발에 관한 연구
최용각(Yongkak Choi),정원영(Wonyoung Jeong),박일권(IlKwon Park),양채모(Chaemo Yang),강재훈(Jaehoon Kang) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
Hybrid vehicles, which have higher fuel economy and system efficiency than conventional vehicles, have been an attracting attention worldwide including various advantages. These advantages include low emissions of greenhouse gases and, little influence, on the ozone layer directly or indirectly. LPI HEV recently developed by HMC performs with torque and fuel economy of the same level as conventional gasoline hybrid vehicles by employing the world’s first liquid-state-injection system for exclusive use of LPG. In particular, control strategy improving fuel economy of the HEV is expected to help cope with future regulations relating to environmental protection from exhaust fumes
김규연 ( Kyuyeon Kim ),김시연 ( Siyeon Kim ),임대영 ( Daeyoung Lim ),하지수 ( Jisoo Ha ),정원영 ( Wonyoung Jeong ) 한국의류산업학회 2021 한국의류산업학회지 Vol.23 No.2
This study aimed to examine the appearance of heated clothing in relation to fashion trends by analyzing constructive components of clothing using product images and actual products. A total of 91 images of domestic and foreign heated clothing products were collected, and a product analysis conducted with six parameters of item classification, namely, concept and image, silhouette, color, number of heating elements, and heating parts. In addition, an in-depth analysis was carried out with 11 products among them, while focusing on further detailed components of the design and heating system. As a result, the overall exterior design of domestic products has been changed from outdoor clothing to daily clothing reflecting the current design trend. Compared with domestic products, foreign products showed a diverse assortment and a greater number of heating regions per individual item of clothing. The current heating system commonly consists of a heating element, power source, controller board, and wires, although the existence and type of switches differed from product to product. To develop a more efficiently heated clothing to expand the market, the design, ease of use, safety, consumer preference, heating functionality, and durability should be considered. Along with design recommendations for future heated clothing, this study also provides a practical guide to the technical aspects of the design of the components of heated clothing.
김시연 ( Siyeon Kim ),정다희 ( Dahee Jung ),이주영 ( Joo-young Lee ),권지현 ( Jihyun Kwon ),임대영 ( Daeyoung Lim ),정원영 ( Wonyoung Jeong ) 한국의류산업학회 2021 한국의류산업학회지 Vol.23 No.3
Gait analysis trackers have been developed to monitor daily gait patterns to improve users’ running performance and reduce the risk of injuries. A variety of gait analysis trackers are available on the market(e.g., foot pods, insoles). Depending on the type of gait analysis tracker, users’ discomfort or satisfaction as well as required properties may differ. Hence, the purpose of this study was to compare and analyze user experience of three different types of commercial shoe-mounted gait analysis trackers and their mobile applications in a laboratory environment using questionnaires based on actual experiences of each product. Ten males and ten females who regularly enjoy walking and running exercises participated in the experiment. After the participants set up the tracker and application themselves without support from researchers, ten to thirty minutes’ exercise was permitted on each product. Following this, the participants answered questionnaires containing evaluation variables on the device and mobile application, as well as satisfaction, intention to use, recommendation, and purchase. In addition, they were asked questions about the attractive features and shortcomings of each device and application. The results showed that the PRO-SPECS® smart insole was preferred over the others for ease of use, perceived durability, psychological burden of the design, and usefulness of the information provided by the application. Along with the results of questionnaire, this study also discussed strategies and recommendations for future product design and development.
Guidelines for Designing of the Smart Heated Clothing through the User Needs Survey
Min-Uk Cho(조민욱),Yong-Ku Kong(공용구),Kyeong-Hee Choi(최경희),Hyun-Ho Shim(심현호),Jae-Kyeong Kim(김재경),Sang-Won Lee(이상원),Sooyeon Leem(임수연),Wonyoung Jeong(정원영),Siyeon Kim(김시연),Chae-Won Park(박채원) 대한인간공학회 2019 대한인간공학회 학술대회논문집 Vol.2019 No.10