• Proceedings of the Acoustical Society of Korea Conference
• /
• 1998.06c
• /
• pp.59-62
• /
• 1998

본 논문에서는 한국전자통신연구원의 Handy Combi 응용 도메인을 대상으로 한 화자독립 연속음성인식 시스템 개발에 관하여 기술한다. 불특정화자가 자연스럽게 발음한 연속음성을 인식하는 기술은 펜인식 등과 더불어 멀티모달 인터페이스의 핵심 요소로서, 이동 환경에서 사용자의 다양한 요구사항을 처리하는 지능형 에이전트에 구현을 위해 필수적으로 개발되어야 하는 기술이다. 본 논문에서는 연속확률분포를 가지는 Hidden Markov Model(HMM) 기반의 연속음성인식 시스템을 구현하였다. 개발된 시스템은 음성특징벡터로 MFCC를 사용하였으며, 음소 모델의 강인한 훈련을 위해 음성학적 지식에 기반을 둔 tree-based clustering 방식을 도입하였다. 인식단계에서는 인식속도를 개선시키기 위해 beam-search 기법을 적용하였다. 인식 실험 결과, 99.7%의 어절 인식률과 98.8%의 문장 인식률을 얻었으며, 최종적인 문장의 이해도는 99% 이상이었다.

• Proceedings of the Korea Multimedia Society Conference
• /
• 2002.11b
• /
• pp.178-181
• /
• 2002

본 논문에서는 서명의 동적 특징에 기반한 구간 분할과 3단계 정합을 특징으로 하는 온라인서명 인증 시스템을 제안한다. 온라인 서명 인증을 위해 구간 분할에 이은 구간별 정합이 널리 연구, 적용되어왔다. 그러나 기존의 구간 분할법은 정적 특징인 서명의 모양에 기반하므로 모조의 단서를 제공하는 위험이 있었다. 제안한 방법은 전자 펜의 속도나 가속도 등과 같은 동적 특징을 기반으로 구간 분할을 수행하므로써 모조가 어렵게 하였다. 분할된 구간들은 모델 서명의 구간들과 보강된 동적 프로그래밍(DP) 기법으로 대응 구간들을 찾도록 하였으며, 이 과정에서 정적 특징량을 제한 조건으로 사용하므로써 안정되게 대응 구간을 추출하였다. 또한 서명 특징들에 가중치를 부여하고, 정합 단계를 세 단계로 분리하므로써 상충 관계에 있는 Type Ⅰ과 Ⅱ오류를 최소화하였다. 실험은 온라인 서명 특징들간의 비교 분석을 통해 그들의 가중치를 결정하는 근거를 보이고, 동적 특징에 기반한 구간 분할의 유효성을 보였다.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.21 no.6
• /
• pp.640-645
• /
• 2020

To produce an input device stably using the transparent electromagnetic pattern of an electromagnetic induction method, pattern inspection is required in advance in the production process. Various methods of inspecting the capacitive pattern for hand-touch have been proposed, but it is difficult to find the related technical data for the pattern inspection method of the transparent electromagnetic induction method. In this study, to develop an inspection system for a fused electromagnetic resonance pen sensor with a copper-etched metal mesh pattern, an inspection algorithm and method for measuring the antenna impedance inside the sensor was proposed by measuring only the exposed FPCB connector. The proposed method was configured as a control board consisting of a microprocessor that forms a loop between specific channels according to the command of a computer, a computer-controlled by the Windows program, an LCR meter measuring the impedance between specific channels, and transmitting the measurement results back to the computer. An evaluation of the proposed system and measurements of nine specimens showed that it could detect the defects of the sensor used in the actual product.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
• /
• v.25 no.8
• /
• pp.651-656
• /
• 2012

A study on capacitive characteristics of stylus pen for touch panel are progressed in this paper. Also the main factors for capacitive sensitivity are studied. Namely, highly sensitive stylus pen which can be applied to capacitive touch panel are studied based on the analysis of materials and process conditions regardless of pattern shapes. Stylus pen was made of PDMS(Poly-Di-Methyl-Siloxane) and conductive metal powders which does not damage the touch panel surface. We tried to get the advantages of both the properties of soft PDMS and conductive metal powders. We found that potential difference of capacitance change with conductivity of the composite materials(PDMS + metal powders) it implies that during touch process, large voltage difference can be caused by the high conductive materials of stylus pen. Stylus pen made by PDMS with mixed with Ag powders which has large conductivity shows more capacitance change of 1 pF than PDMS with other materials of Ni or C powders.

• The Inventors News
• /
• no.52
• /
• pp.1-16
• /
• 2006

'2006 여성발명인걷기대회' 성황리에 마쳐/여성의 힘을 발명으로 승화하자/건강관리휴대폰 기술, 특허출원 급증/세계적 귄위 인명사전 '마르퀴즈 후즈후' 등재/고객 감동 주는 독특한 기능성 명함 등장/각 국의 상표 디자인 동향/현장 스케치/6백만불의 사나이 현실화 되다/핸드라이팅 전자펜 국내 최초 개발/특허법원이 지금 어떤 일이/중기청, 가짜 여성기업 골라 낸다/'여성 취업.창업정보 여기에 다 있어요'/중기청 여성기업.혁신형중기.재래시장 집중지원/'코리아나화장품 식물원' 개원/국민은행 '명품 여성통장' 대박/난방비 획기적 절감, '전기온풍기' 나와/3백50년 묵은 덧간장, $1\ell$ 5백만원에 팔려/한국기술거래소, 중소기업 기술 장터로 각광/순대, 기능성 음식으로 진화/해외 화제/역사 속의 발명품/하루 10분 발명교실/특허Q&A/함씨네토종콩식품 함정희 대표/중기청연구장비공동이용알선.중개계획/가짜 '메이드 인 코리아'중동지역서 판친다/아이디어 착상 및 발명 기법/여성의 사회참여 확대와 여성발명 확산/인공감미료를 만들어 낸 사람들/'중소기업청장 조찬간담회' 열려/휴면 특허율 66.8% 지식 경쟁력 걸림돌/발명가.의사 등 '이그노벨상' 수상/한국여성발명협회 '자문위원 위촉식' 갖다/한미영 회장, 간호용품아이디어대회 특강/발명인의 전당.특허고객서비스센터 오픈/여성발명인, 산재권 교육 참가 열의 높아져/생활 아이디어/11월 '지재권 및 여성발명 창의교실' 개최 안내/한국여성발명협회 회원사 발명품 가이드

• Proceedings of the IEEK Conference
• /
• 1999.06a
• /
• pp.492-495
• /
• 1999

In this paper, a research is focused on implementation of the handwritten Korean-character recognition system using a neural coprocessor for PDA application. The proposed coprocessor is composed of a digital neural network called DMNN and a RISC-based dedicated controller in order to achieve high speed as well as compactness. Two neural networks are used for recognition, one for stroke classification out of extended 11 strokes and the other for grapheme classification. Our experimental result shows that the successful recognition rate of 92.1% over 3,000 characters written by 10 persons can be obtained. Moreover, it can be improved to 95.3% when four candidates are considered. The design verification of tile proposed neural coprocessor is conducted using the ASIC emulator for further hardware implementation.

• The KIPS Transactions:PartD
• /
• v.12D no.1 s.97
• /
• pp.159-164
• /
• 2005

In a computing environment connected pan-based computers and a server by Internet, This paper describes a language learning system evaluating the quality of a handwriting string. For the purpose of the system, this paper explains how to retrieve reference data from a database, how to evaluate the quality of a handwriting string using global and local features. The Proposed system can evaluate the qualify of a handwriting string as well as a handwriting character. The qualify can be computed in the case of different language between reference and input. Therefore, we expect that the system is very useful not only for training on handwriting but also learning a language.

• Journal of Institute of Control, Robotics and Systems
• /
• v.20 no.6
• /
• pp.647-650
• /
• 2014

Assessment and rehabilitation of patients with unilateral visual neglect has been one of the fields that require assistive technology. Paper-and-pencil tests, including the LBT (Line Bisection Test), have been one of the most commonly used visual neglect assessment methods used in a clinical setting. The key motivation of this study was to establish a computer-based real-time assessment system for the hemi-neglect patients without altering the conventional paper-and-pencil based user tools. A digital penbased assessment and rehabilitation system, the ePen System, could eliminate the manual assessment time while maintaining measurement accuracy. As a result, the proposed system may assist rehabilitation specialists to assess and diagnose patients with unilateral visual neglect. This system can be applied to a range assessment and rehabilitation modalities based on a pen and paper. It can also be applied to various patients such as those with Parkinson's disease, stroke sufferers, or those who have experienced different forms of brain lesions.

• Journal of Korea Society of Industrial Information Systems
• /
• v.17 no.6
• /
• pp.19-24
• /
• 2012

In this paper we introduce a commercial interactive whiteboard (IWB) system named ImSensorTouch by ImSensor Inc. Using this interface system, we can control our computer through the interactive whiteboard screen just by touching it with your finger or a pen. The interface interacts with Windows operating system (OS) and is adaptable to changes of surroundings especially temperature, and illumination condition. The proposed system calculates the difference between a reference image and a current image captured by a camera in the optical receptive field. And the position making the difference is used to generate the position on Windows screen. Then, we send a mouse event on the position to Windows OS. We have implemented the system using a critical section(CS) with two threads for the reference frame update process in which an adaptive thresholding technique is periodically exploited to get reliable result. We expect the system is competitive and promises a bright future in the IWB market.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.12 no.10
• /
• pp.4632-4641
• /
• 2011

The detailed production traceability information is a fundamental element in successful introduction and revitalization of traceability system. In this paper, we propose a production traceability information gathering system which is based on handwritten data digitalization technology in agro-livestock products. By the proposed system, we can effectively gather the detailed production traceability information with digital pen and the management ledger of paper document type by only writing the ledger. The server of the system generates the same digital image as the ledger and converts the handwritten data into digital text to insert the data into the database. Because the system is superior to data gathering system based on PC, PDA and touch screen in mobility, usability, data input speed, suitability in agro-livestock environment, it is possible to effectively gather traceability information of high quality by users even if they have low information ability and insufficient time to input data. We expect that the handwritten data digitalization technology is used to gather document based information in stage of manufacturing, distribution and marketing. In addition, this technology is applied to implementing advanced traceability system with RFID/USN based systems.