• Title/Summary/Keyword: 블록 정도 관리

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Low-Power Motion Estimator Architecture for Deep Sub-Micron Multimedia SoC (Deep Submicron 공정의 멀티미디어 SoC를 위한 저전력 움직임 추정기 아키텍쳐)

  • 연규성;전치훈;황태진;이성수;위재경
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.41 no.10
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    • pp.95-104
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    • 2004
  • This paper propose a motion estimator architecture to reduce the power consumption of the most-power-consuming motion estimation method when designing multimedia SoC with deep submicron technologies below 0.13${\mu}{\textrm}{m}$. The proposed architecture considers both dynamic and static power consumption so that it is suitable for large leakage process technologies, while conventional architectures consider only dynamic power consumption. Consequently, it is suitable for mobile information terminals such as mobile videophone where efficient power management is essential. It exploits full search method for simple hardware implementation. It also exploits early break-off method to reduce dynamic power consumption. To reduce static power consumption, megablock shutdown method considering power line noise is also employed. To evaluate the proposed architecture when applied multimedia SoC, system-level control flow and low-power control algorithm are developed and the power consumption was calculated based on thor From the simulation results, power consumption was reduced to about 60%. Considering the line width reduction and increased leakage current due to heat dissipation in chip core, the proposed architecture shows steady power reduction while it goes worse in conventional architectures.

Content based Video Copy Detection Using Spatio-Temporal Ordinal Measure (시공간 순차 정보를 이용한 내용기반 복사 동영상 검출)

  • Jeong, Jae-Hyup;Kim, Tae-Wang;Yang, Hun-Jun;Jin, Ju-Kyong;Jeong, Dong-Seok
    • Journal of the Institute of Electronics Engineers of Korea SP
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    • v.49 no.2
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    • pp.113-121
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    • 2012
  • In this paper, we proposed fast and efficient algorithm for detecting near-duplication based on content based retrieval in large scale video database. For handling large amounts of video easily, we split the video into small segment using scene change detection. In case of video services and copyright related business models, it is need to technology that detect near-duplicates, that longer matched video than to search video containing short part or a frame of original. To detect near-duplicate video, we proposed motion distribution and frame descriptor in a video segment. The motion distribution descriptor is constructed by obtaining motion vector from macro blocks during the video decoding process. When matching between descriptors, we use the motion distribution descriptor as filtering to improving matching speed. However, motion distribution has low discriminability. To improve discrimination, we decide to identification using frame descriptor extracted from selected representative frames within a scene segmentation. The proposed algorithm shows high success rate and low false alarm rate. In addition, the matching speed of this descriptor is very fast, we confirm this algorithm can be useful to practical application.

Access Frequency Based Selective Buffer Cache Management Strategy For Multimedia News Data (접근 요청 빈도에 기반한 멀티미디어 뉴스 데이터의 선별적 버퍼 캐쉬 관리 전략)

  • Park, Yong-Un;Seo, Won-Il;Jeong, Gi-Dong
    • The Transactions of the Korea Information Processing Society
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    • v.6 no.9
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    • pp.2524-2532
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    • 1999
  • In this paper, we present a new buffer pool management scheme designed for video type news objects to build a cost-effective News On Demand storage server for serving users requests beyond the limitation of disk bandwidth. In a News On Demand Server where many of users request for video type news objects have to be serviced keeping their playback deadline, the maximum numbers of concurrent users are limited by the maximum disk bandwidth the server provides. With our proposed buffer cache management scheme, a requested data is checked to see whether or not it is worthy of caching by checking its average arrival interval and current disk traffic density. Subsequently, only granted news objects are permitted to get into the buffer pool, where buffer allocation is made not on the block basis but on the object basis. We evaluated the performance of our proposed caching algorithm through simulation. As a result of the simulation, we show that by using this caching scheme to support users requests for real time news data, compared with serving those requests only by disks, 30% of extra requests are served without additional cost increase.

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Study on the Analysis of Spatial Structure in Jeju Island Focusing on Parking Status (주차실태를 중심으로 한 제주도 공간구조 분석 연구)

  • Hwang, Kyung-Soo;Yang, Jeong-Cheol;Jo, Hang-Woo
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.22 no.2
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    • pp.667-675
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    • 2021
  • The purpose of this study is as follows: First, to analyze the spatial structure of Jeju by analyzing the rate of parking demand and supply; Second, to determine the parking service imbalance between regions; and third, to elucidate the causes of this spatial structural parking service imbalance and provide effective measures. Due to the rapid population and tourism growth, Jeju is suffering from traffic congestion and serious parking problems. For this, the ways to efficiently utilize the existing parking spaces were identified through spatial structure analysis based on the parking demand and supply in the Jeju area. As short-term policy, the following changes were proposed: switching to small-scale eup or myeon blocks of parking space, use of shared parking system, and repairing side streets in residential areas. As mid-to-long-term policy, it is linked to other means of transportation as follows: parking demand management policy through modal share by reorganizing public transportation routes or expanding traffic facilities; securing park-and-ride lots; and different parking pricing for different time periods. To implement these policies, each area of the public sector, private sector, and private-public partnership should develop the bond of sympathy by areas and participants.