• Journal of Korea Society of Industrial Information Systems
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• v.9 no.3
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• pp.71-79
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• 2004

Owing to the rapid increase of the number of automobiles, the traffic is being heavily crippled as time goes by. To provide drivers with better safety and convenience, a variety of CNSs(Car Navigation System) are being installed more and more specially for the vehicles which are produced in recent days. As the CNS has gained the public popularity, it has been playing a role as a component of the multimedia system in a vehicle in addition to providing the capability of route guidance service. It is, therefore, now recognized as an important unit of the vehicle interior system. As the situation has been changed as formerly described, it is necessary that not only the functions but also the usability and exterior features are to be designed to suit customers' tastes. This paper is an attempt to find out what the major sensibility factors which customers want as far as a CNS is concerned are. Because these factors can differ from a vehicle type to another that customers prefer, the analysis is based on the vehicle preference. It is proved that MDS(Multi Dimensional Scaling) is an effective method to analyze the sensibility factors for the different types of vehicles. The result shows that for the people who prefer the sedan-type vehicles, luxuriousness, harmoniousness, and texture are major factors. For people who like sports car, faminism, salience, and dynamics are major factors. For people who prefer SUV's(Sports Utility Vehicle) or MPV's(Multi Purpose Vehicle), solidity, dynamics, and convenience are important.

• Journal of the Korea Society of Computer and Information
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• v.14 no.11
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• pp.159-167
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• 2009

The vehicles play a significant role in modern people's life as economy grows. The development of car navigation system(CNS) provides various convenience because it shows the driver where they are and how to get to the destination from the point of source. However, the existing map-based CNS does not consider any environments such as traffic congestion. Given the same starting point and destination, the system always provides the same route and the required time. This paper proposes a path planning method with traffic prediction by applying historical driving information to the Fuzzy theory and Bayesian update. Fuzzy theory classifies the historical driving information into groups of leaving time and speed rate, and the traffic condition of each time zone is calculated by Bayesian update. An ellipse area including starting and destination points is restricted in order to reduce the calculation time. The accuracy and practicality of the proposed scheme are verified by several experiments and comparisons with real navigation.

• Journal of Institute of Control, Robotics and Systems
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• v.14 no.11
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• pp.1189-1195
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• 2008

We introduce a MEMS-based pedestrian dead reckoning (PDR) system. A walking navigation algorithm for pedestrians is presented and map-matching algorithm for the navigation system based on dead reckoning (DR) is proposed. The PDR is equipped on the human body and provides the position information of pedestrians. And this is able to be used in ubiquitous sensor network (USN), U-hearth monitoring system, virtual reality (VR) and etc. The PDR detects a step using a novel technique and simultaneously estimates step length. Also an azimuth of the pedestrian is calculated using a fluxgate which is the one of magnetometers. Map-matching algorithm can be formulated to integrate the positioning data with the digital road network data. Map-matching algorithm not only enables the physical location to be identified from navigation system but also improves the positioning accuracy. However most of map-matching algorithms which are developed previously are for the car navigation system (CNS). Therefore they are not appropriate to implement to pedestrian navigation system based on DR system. In this paper, we propose walking navigation system and map-matching algorithm for PDR.

• Journal of Korea Multimedia Society
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• v.7 no.2
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• pp.231-240
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• 2004

Location Based Service(LBS) system is widely used in Car Navigation Service(CNS), position tracing, tour guide, etc. Recently, the development of a mobile hardware enables us to run various application of software on small handset. Although CNS systems are widely used on personal computer, PDA and embedded machines, small display system of a mobile handset still constrains to make it difficult to developed route visualization and navigation system. In this paper, we propose a new route map visualization system on mobile handset environment for LBS system. We use modified line simplification algorithm that removes extraneous information and places more emphasis on the turning point. We also adopted level of detail route visualization technique for visualization of a detail map. This system improved turn-by-turn method and line drive system, which are widely adopted by current route visualization system.

• Proceedings of the KOR-KST Conference
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• 1998.10a
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• pp.171-180
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• 1998

본 연구의 목적은 차량주행안내시스템(CNS)이 최단거리 통행노선을 제공하였을 때 운전자 노선선택 행태를 분석하는데 있다. 본 연구에서 통행목적 및 운전자 특성에 따른 운전자의 노선선택 행태를 도출한 결과, 쇼핑통행과 레저통행시 CNS에서 제공하는 노선을 선택을 하는 경우가 많은 것으로 나타났다. 또한, CNS에서 최단거리 정보를 제공했을 경우는 운전자 특성에 따라 노선선택행태가 차이가 있으며 통행목적별로 노선선택에 영향을 미치는 운전자 특성이 달라지는 것으로 분석되었다. 본 연구의 분석을 통하여 통행목적 및 운전자 특성에 따른 운전자의노선선택 행태를 도출해 운전자 특성과 통행특성에 따른 노선선택 행태를 반영한 통행배정모형을 구출할 수 있을 것으로 기대된다.

• Proceedings of the IEEK Conference
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• 2000.07a
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• pp.249-252
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• 2000

An experimental multimodal system combining natural input modes such as speech, lip movement, and gaze is proposed in this paper. It benefits from novel human-compute. interaction (HCI) modalities and from multimodal integration for tackling the problem of the HCI bottleneck. This system allows the user to select menu items on the screen by employing speech recognition, lip reading, and gaze tracking components in parallel. Face tracking is a supplementary component to gaze tracking and lip movement analysis. These key components are reviewed and preliminary results are shown with multimodal integration and user testing on the prototype system. It is noteworthy that the system equipped with gaze tracking and lip reading is very effective in noisy environment, where the speech recognition rate is low, moreover, not stable. Our long term interest is to build a user interface embedded in a commercial car navigation system (CNS).

• Proceedings of the Korean Information Science Society Conference
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• 2005.11a
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• pp.301-303
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• 2005

최근 자동차에서 위치$\cdot$지리정보를 제공하는 CNS(Car Navigation System)분야로 많은 개발이 되고 있으며, 이를 휴대용 단말기에 적용해 개인화하여 서비스를 제공하고 있는 추세이다. 휴대 단말기에 적용해 개인화 서비스를 제공하는 것을 PNS(Personal Navigation System)라 하며, 이 시스템은 이동 중인 사용자가 휴대용 기기에 공간 데이터를 저장하고 사용자의 위치를 기반으로 목적지까지의 경로를 안내하는 서비스 유형으로 사용자가 휴대하는 기기에 의해 정보가 제공되기 때문에 개인화 정보 제공이라는 특징을 가지고 있다. 또한 위치기반 PNS 서비스는 단순 위치 정보의 활용만이 아니라 위치 정보를 근간으로 POI(Poin of Interest)가 제공되어야 한다. 이를 위해서는 위치에 부가되는 다양한 POI의 정보와 함께 개인의 성향 정보가 적용되어야 한다. 그러나 아직까지 개인의 성향이나 특성에 따른 정보를 포함하지 않고 있다. 본 논문에서는 사용자가 선 입력한 성향정보와 History 정보로부터 추출되는 사용자 선호 특성 정보를 데이터베이스로 구축하고, 개인 선호 특성 정보를 반영하여 웹 또는 모바일 기기를 통해 POI 서비스를 제공 받을 수 있는 PNS시스템을 제안하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2002.11c
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• pp.2015-2018
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• 2002

GPS는 인공위성을 이용한 범세계적 위치결정 체계로, 정확한 위치를 알고 있는 위성에서 발사한 전파를 수신하여 관측점까지의 소요시간을 관측함으로써 관측점의 위치를 구하는 체계이다. 본 논문에서는 GPS 위성을 통해 수신한 데이터를 이용하여 CNS를 구축하기 위해 표준화된 프레임워크와 규칙을 기반으로 만들어진 기능별 컴포넌트를 조립 가능하도록 하는 컴포넌트 아키텍처 기술인 마이크로소프트(MS)사의 COM(Component Omject Model) 컴포넌트를 채택하여 CNS 컴포넌트를 추출한다.

• Journal of Korea Society of Industrial Information Systems
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• v.11 no.2
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• pp.79-85
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• 2006

As the portable information appliance is developed, the demand of flat panel display equipments and parts are steeply increased. Most of all, the applications of LCD such as LCD TV, monitor, digital camera, CNS(car navigation system) and game machine become diversified. With the result that the number of BLU production enterprise is increased and the research on the design of backlight with the superior optical properties is persistently in progress. In this study we developed the pattern design tools for CCFL(cold cathode flourescent lamp) backlight to improve the conventional pattern design environment in which the pattern is designed manually from the experience and the trial and error. For the verification of our research, we designed the light reflection surface patterns for a real model of backlight and we measured the brightness uniformity using the BM-7. From the brightness uniformity measurement, the BLU designed using the presented tool showed the tolerable performance only in the first try of pattern design rather than the fifth try of pattern design in case of the conventional pattern design.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.19 no.1
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• pp.39-45
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• 2001

The design of highway in the future should be convenient using of a high-technology information, and it needs the design of alignment that is able to find the maximum vehicles inducement function fitting into Car Navigation System. Well then, the alignment of the existent highway needs to be analyzed with accuracy for improving design of existent highway, and it needs the design drawing of existent highway, and coordinates of the main point. This study gets data of the alignment of highway economically by Kinematic GPS surveying to analyze the alignment of existent highway, and horizontal alignment of highway is analyzed by this data. The result of study is included within range practical error, and alignment analysis can be known that there is practical.