• Proceedings of the IEEK Conference
• /
• 2002.06d
• /
• pp.259-262
• /
• 2002

In this paper, we present a hard disk drive embedded digital satellite receiver with scene change detection for video indexing. This receiver can store, retrieve and classify the broadcast data by implementing an interface between the conventional digital satellite receiver and digital storage media. Using this system, user can obtain more information for efficient video retrieval.

• Journal of the Korea Safety Management & Science
• /
• v.7 no.1
• /
• pp.179-198
• /
• 2005

The purpose of this study is to propose a strategic approach to improve firms competitive advantages by selecting main business body and business sector at the same time. In this study the strategy of an efficient business model for joint logistics is suggested by means of searching for a joint program. The methods applied to this study were literature survey, questionnaire and internet information as well as case studies on advanced domestics and foreign logistics enterprises. The research scope of this study has focused on the joint logistics of SMEs being in the DVD(Digital Video Disk) industry sector. The results of this study are shown as follows ; first, in short terms, main business operating body has, second, in long terms, logistics operating enterprise has a direct effect on the joint logistics operation strategy of the DVD(Digital Video Disk) industry in Korea. The conclusion of this study shows that this method as a model of consequence to increase the joint logistics implementation successfully.

• Proceedings of the Korean Magnestics Society Conference
• /
• 1996.10a
• /
• pp.7-8
• /
• 1996

• Journal of Information Processing Systems
• /
• v.14 no.5
• /
• pp.1272-1285
• /
• 2018

The paper presents a novel embedded multifunctional media sever (EMMS) for mobile devices to receive various media programs. Being different from other contemporary system research, the paper mainly studies how to design a reception solution for terrestrial digital television (DTV) on mobile devices and how to enable mobile devices can receive DTV program, enjoy video-on-demand (VOD), achieve video surveillance and relay Internet video program via local Wi-Fi simultaneously. In the system design, we integrate broadcasting-terrestrial DTV tuner, streaming media re-transmission system, VOD disk, video camera and access interface to the Internet into EMMS, which can either receive terrestrial DTV radio signals and demodulate out digital transport stream (TS), or can read streaming media bit-stream from VOD disk, surveillance camera or access interface to the Internet. The experimental results show the proposed system is stable and quality-efficient. Comparing with the other systems, the proposed system has the least packet loss rate and response time.

• Proceedings of the KIEE Conference
• /
• 2005.10b
• /
• pp.210-212
• /
• 2005

The personal video recorder is a consumer electronics device that records television shows to a hard disk in digital format. In this paper, we propose an implementation method of personal video recorder for digital TV. The proposed personal video recorder includes cpu and system control modules, graphics and display module, audio DSP module, digital I/O module, NIM module, graphic software library, and embedded software modules for providing a lot of PVR functions such as live or reserved recordings, browsing of recorded content list, trick play and time shifting. Especially, combining trick play with time shifting makes much more convenient functions such as pausing live TV, instant replay of interesting scenes, and skipping advertising.

• The Magazine of the IEIE
• /
• v.23 no.7
• /
• pp.37-43
• /
• 1996

DVD(Digital Versatile Disk)는 CD(Compact Disk)에 비해 약 9배의 저장용량(4.7GByte)을 갖는 디스크로 멀티미디어 시대를 위한 최적의 기록 매채로 그 중요성이 부각되고 있다. Player의 용도 또한 가전 영역인 audio/video system과 computer영역인 DVD-ROM모두에 적용될뿐만 아니라 기존의 모든 CD도 호환되도록 하고 있어 DVD판매 시장이 매우 크게 형성될 것으로 예측하고 있다. 여기에서는 DVD요소 기술과 동향 및 전망, 규격 내용, 그리고 DVD의 시장 동향에 관하여 기술하고자 한다.

• Proceedings of the KIEE Conference
• /
• 1999.11c
• /
• pp.652-654
• /
• 1999

This paper presents approaches to the control of the DVD(Digital Video Disk) system using DSP(Digital Signal Processor) in order to improve the precision and robustness. To improve the performance of the Pick-Up servo actuator of the digital video drive, the tracking and focusing servo control algorithms is applied to this system. Simulation results show the performance of the robust control algorithm applied the pick-up servo system comparing to the linear controller.

• Publications of The Korean Astronomical Society
• /
• v.13 no.1 s.14
• /
• pp.39-54
• /
• 1998

We have developed solar observational system in the department of Astronomy & Space Sciences of KyungHee University, in order to monitor solar activities and construct solar database for space weather forecasting at maximum of 23rd solar cycle, as well as an solar education and exercise for undergraduate students. Our solar observational system consists of the full disk monitoring system and the regional observation system for H a fine structure. Full disk monitoring system is made of an energy rejection filter, 16cm refractor, video CCD camera and monitor. Monitored data are recorded to VHS video tape and analog output of video CCD can be captured as digital images by the computer with video graphic card. Another system for regional observation of the sun is made of energy rejection filter, 21cm Schmidt-Cassegrain reflector, H a filter with 1.6A pass band width and $375\times242$ CCD camera. We can observe H a fine structure in active regions of solar disk and solar limb, by using this system. We have carried out intense solar observations for a test of our system. It is found that Quality of our H a image is as good as that of solar images provided by Space Environmental Center. In this paper, we introduce the basic characteristics of the KyungHee Solar Observation System and result of our solar observations. We hope that our data should be used for space weather forecasting with domestic data of RRL(Radio Research Laboratory) and SOFT(SOlar Flare Telescope).

• 한국정보통신설비학회:학술대회논문집
• /
• 2006.08a
• /
• pp.141-144
• /
• 2006

The personal digital recorder is a consumer electronics device that records television shows to a hard disk in digital format. In this paper, we propose an implementation method of personal digital recorder for HDTV. The proposed personal recorder includes CPU and system control modules, graphics and display module, audio DSP module, digital I/O module, NIM module, graphic software library, and embedded software modules for providing a lot of personal digital recorder functions such as live or reserved recordings, browsing of recorder content list, trick lay and time shifting. Especially, combining trick play with time shifting makes much more convenient functions such as pausing live TV, instant replay of interesting scenes, and skipping advertising.

• Proceedings of the KSME Conference
• /
• 2000.11a
• /
• pp.159-164
• /
• 2000

In this study, the deformation analysis of 80mm optical disk holder considering the creep characteristics of plastic materials has been conducted and experimentally verified. It is very important to remedy the unrecoverable creep deformation and relaxation of holding force of an optical disk holder for the reliability of DVDR-P, DVD-ROM. A disk holder inserted in a cartridge case has been kept in the chamber with $60^{\circ}C$ temperature and 90% humidity for 24 hours. After storage test, the arm span and holding force of a disk holder have been measured after 24 hours at room temperature and normal humidity. The predicted results are in good agreement with experimentally measured one.