• Electronics and Telecommunications Trends
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• v.23 no.1 s.109
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• pp.77-88
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• 2008

음성합성 기술은 1990년대 중반 음편접합 방법론이 출현하면서 괄목한 만한 기술적 발전을 이루어, 2000년 전후에는 전화망을 이용한 ARS, VMS, UMS 서비스를 중심으로 폭넓게 사용되면서 일반 사용자들에게 매우 친숙한 서비스를 제공하여 왔다. 그러나 최근 텔레포니 기반의 음성 기술 시장은 기업고객 위주로 그 성장이 더딘 반면, 지능형 로봇, 텔레매틱스, 홈네트워크, 차세대 PC와 같은 전략적 국가 신성장동력 산업분야나 MP3 플레이어, 휴대폰, PMP 단말기, 휴대용 단말기와 같은 임베디드 분야가 음성 기술의 새로운 시장으로 주목을 받고 있다. 임베디드 분야에서 요구하는 음성 기술은 기존 서버급 시스템에서 운영되었던 기술과는 상당히 다른 기술 특성을 가지고 있다. 이에 본 고에서는 음성 기술 중 특히 음성합성 기술에 관한 임베디드 분야의 요구사항을 고찰하고, 이를 해결하기 위한 최근의 기술적 발전 동향 및 응용 사례에 대해서 기술하고자 한다.

• Journal of the Korean Association of Geographic Information Studies
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• v.8 no.1
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• pp.63-74
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• 2005

The telematics device, which is a typical embedded system on the transportation or vehicle, requires the embedded spatial DBMS based on RTOS (Real Time Operating System) for processing the huge spatial data in real time. This spatial DBMS can be developed very easily by SQL3 functions of the ORDBMS such as UDT (user-defined type) and UDF (user-defined function). However, developing index suitable for the embedded spatial DBMS is very difficult. This is due to the fact that there is no built-in SQL3 functions to construct spatial indexes. In this study, we compare and analyze both Generalized Search Tree and Relational Indexing methods which are suggested as common ways of developing User-Defined Indexes nowadays. Two implementations of R-Tree based on each method were done and region query performance test results were evaluated for suggesting a suitable indexing method of an embedded spatial DBMS, especially for telematics devices.

• Electronics and Telecommunications Trends
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• v.19 no.5 s.89
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• pp.1-8
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• 2004

홈네트워크에서의 개방형 개념은 관련 사업자가 하나의 공통된 서비스 플랫폼을 통해 기존 및 향후 신규서비스를 용이하게 수용하며, 효율적으로 통합 관리할 수 있는 인프라를 제공한다. 본 고에서는 홈네트워크를 비롯하여 텔레매틱스, 모바일 환경 등의 임베디드 시스템 상에서 서비스 플랫폼 환경으로 제시되고있는 OSGi 기반의 개방형 서비스 플랫폼의 특징 및 구조, 표준화 및 국내외 연구 개발 동향을 기술한다

• Proceedings of the Korea Information Processing Society Conference
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• 2007.05a
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• pp.858-859
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• 2007

차량용 텔레매틱스 시스템에서의 HMI(Human-Machine Interface)는 차량 환경, 단말기, 운영 체제 등에 맞게 특화되어야 한다. 본 논문에서는 특히 운전자와 미들웨어 특성에 특화된 차량 환경을 고려한 HMI 소프트웨어를 설계하고 이에 대한 적용 사례를 살펴 보고자 한다. 본 논문에서 제시된 HMI 소프트웨어는 국제적으로 임베디드 환경에서 널리 사용되는 운영 체제에 중립적이며 Java 기술을 적용하는 OSGi 프레임워크에 기반한다.

• Journal of Advanced Navigation Technology
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• v.21 no.3
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• pp.300-305
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• 2017

It is necessary to establish a system suitable for the driving vehicle so that it can effectively search for and modify various data anywhere and anytime by effectively linking communication with the computer system in the running vehicle and to control the equipment properly for smooth operation on a limited platform do. Also, vehicle CAN communication is used to extract system engine information, and data is transmitted using ZigBee for this information transmission. Therefore, OBD-II protocol, which is provided by the vehicle itself, is used for vehicle CAN to obtain vehicle status information and exhaust gas using various sensor information of the vehicle and O2 sensor value, and transmits it to the ZigBee main control system. In this study, we implemented a system that can reduce the battery load damage to the maximum by reducing the power consumption to the maximum, and to monitor the internal state of the vehicle through ZigBee communication with the embedded system for low power vehicles.

• IEMEK Journal of Embedded Systems and Applications
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• v.1 no.2
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• pp.82-89
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• 2006

It appears that it is possible for us to make a wireless communication of even home-network system within car by integrating with the Ubiquitous such as mobile phone, wireless Internet, GPS and DMB in the future. If the present wireless surroundings within the car are connected with very high-speed wireless network as measurement system for wireless communication surroundings within this car in the future, it will develop the complicated communication conditions such as safe checkup, communication between systems within car, and wireless communication for user entertainment unlike universal communication conditions. Accordingly, there is the necessity of the device that can measure the interference of electric wave, communication speed and communication quality by a kind of each car. This paper aims at making the real measurement device to raise the reliability of each Application for inquiring into the interference about each other in the frequency band used under Telematics surroundings.

• The KIPS Transactions:PartD
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• v.15D no.5
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• pp.609-620
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• 2008

The service handling the map data in the mobile device including navigation, LBS, Telematics, and etc., becomes various. The size of map data which is stored and managed in the mobile device is growing and reaches in several GB. The conventional navigation system has used the read-only PSF (physical storage format) in order to enhance the performance of system by maximum in the mobile device which has limited resources. So though a little part of the map data is changed the whole data must be updated. In general, it takes several ten minutes to write the 2 GB map data to a flash memory of mobile device. Therefore, we have developed the mobile spatial DBMS (database management system) to solve the problem which is that the partial map data couldn't be updated in the conventional navigation system. And we suggest the policy to guarantee the performance of the navigation system which is implemented using the spatial mobile DBMS and verify this by experiment.