• Proceedings of the KIEE Conference
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• summer
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• pp.1534-1536
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• 2004

오늘날 대부분의 기기들은 사용하지 않는 상태에서 단지 플러그만 꼽혀 있어도 전력을 소모하는데 이를 대기전력(standby power)라고 한다. 오디오와 비디오 제품의 경우 리모콘이나 시간예약 기능이 추가되어 전력을 소모하지만 대기전력절감을 위한 EPA, GEEA, AGO, IEA 및 국내의 KEMCO의 노력으로 off-line기기의 대기전력은 기술적으로 충분히 감소시킬 수 있는 단계에 이르렀다. 지능형 home networking 또는 smart home이 차세대 성장 동력으로 추진되는 등 정보가전기기의 Network화에 의한 대기전력은 점차 증가할 전망이다. 본 논문에서는 Networked기기의 대기전력절감의 최근 동향에 대해서 기술하였다.

• Proceedings of the IEEK Conference
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• 2003.07e
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• pp.1915-1919
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• 2003

A practical method of adaptive rate allocation to source and channel codings for an independent loss channel is proposed for Internet video. It is based on the observations that the values of residual loss probabilities at the optimal code rates for different packet loss probabilities are closely clustered to the average residual loss probability for a transmission frame size n in RS(n,k) code and for a total bit rate R. These observations aye then exploited to find the code rate for maximum PSNR. Simulation results demonstrate that the proposed method achieves a near-optimal bit-rate allocation in the joint source-channel coding of H.263 and RS(n,k) codings.

• Journal of Distribution Science
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• v.7 no.1
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• pp.35-53
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• 2009

Sees the market where home appliance and network equipment, the communication service enterprises are new recently the home network market of the most which has an interest in the home network is being activated the newly-built high-class apartment in the center. The company building leads because not being option of the case last customer of newly-built market and must do a business . marketing. So newly-built market the demand grasp which is individual leads sale activation with difficult and that to creates a benefit there is a limit judges and axis market in the object hereafter demand at even the popular house the function to prepare in being magnified is simple and there is a possibility of saying that a more effort is demanded in supply style video phone market opening up where the price is cheap. Saw with like this reason from, analyzes the concept and a market trend of the video phone, grasps distribution channel forms and A/S handling systems and there is the goal finds the video phone sale revitalization plan which is suitable in all market.