• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.733-736
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• 2009

In this paper, we proposed the coupon recognition system using vision techniques. In the proposed system coupon information represented by the ID in the database. We use the camera to acquire images which contains coupon information. By using the ID we get information from the database. The performance of proposed system is verified through many mobile phones.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.2
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• pp.1388-1397
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• 2015

Recently, an application business model was proposed to implement an M-coupon system using the NFC-based mobile devices. In this paper, the security requirements were surveyed for a secure M-coupon system and to analyze the threats on the existing NFC-based M-coupon protocols. After considering the implementation efficiency and security, this paper presents a novel M-coupon protocol based on the Diffie-Hellman key agreement scheme. This protocol can be an alternative to solve the security problems related to the PKI (Public Key Infrastructure) and secret key distribution. Furthermore, this M-coupon protocol is designed to provide user authentication and counteract the relay attack.

• Journal of the Korea Society of Computer and Information
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• v.18 no.10
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• pp.81-88
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• 2013

Since nowadays mobile phone messages are flourishing, the application of electronic coupon (e-coupon) will become a trend for mobile users. E-coupon for mobile commerce can provide mobility for users and distribution flexibility for issuers. In this paper, we propose a mobile e-coupon system that just applies some simple cryptographic techniques, such as one-way hash function and XOR operation. In our system, the customer can control the number of issued e-coupons and the issuer can prevent them from double-redeeming. The customer does not need to perform any exponential computation in redeeming and transferring the coupons. Our scheme uses one-way hash chains for preventing from double-spending.

• Journal of Digital Convergence
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• v.11 no.1
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• pp.267-273
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• 2013

Recently, coupons are distributed in various ways such as paper, Internet, and mobile phone, with the development of the information and communications technology. Coupon users benefit from the use of these coupons. For example, they can get a discount for the product that they wanted to buy and can be offered additional services. However, paper and Internet coupons have a risk of loss since users have to cut them out and keep them separately. Mobile coupons also don't provide users with user convenience, because coupon users first look for coupon data from their mobile phone and show it to the counterperson. To solve these problems, this study proposes a NFC-based mobile coupon system under which we can use coupon data only with mobile device access.

• Proceedings of the Korea Information Processing Society Conference
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• 2014.11a
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• pp.499-502
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• 2014

최근에는 많은 스마트폰 어플리케이션이 결제와 할인쿠폰, 적립 등 각종 기능을 제공하면서 사용자들에게 매우 간편한 거래 방식을 제공할 수 있는 NFC 서비스 시장이 성장할 것으로 전망되고 있다. 특히 스마트폰의 NFC 기능을 이용한 여러 서비스들 중 모바일 쿠폰 서비스인 mCoupon 서비스의 시장 활성화를 위해 다양한 인프라가 구축되고 있다. 하지만 mCoupon 서비스는 아직까지 관련 보안 연구가 미흡한 상태이며 보안 기술 개발 속도 또한 현재 구축되고 있는 다양한 인프라에 따라가지 못하고 있다. 따라서 본 논문에서는 NFC 환경에서의 mCoupon 서비스를 위한 안전하고 효율적인 쿠폰 시스템을 설계하고 구현한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.10a
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• pp.1061-1064
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• 2015

모바일 IT기술이 발전함에 따라 비접촉 근거리 무선 통신 기술 중 NFC가 대부분의 스마트기기에 탑재되어 빠르게 확산되고 있다. 특히 스마트폰의 NFC 기능을 이용한 서비스들 중 모바일 결제 서비스가 활성화를 위해 다양한 인프라가 구축되어 있으며 최근에는 금융과 기술이 결합한 '핀테크(Fintech)'가 주목받으면서 NFC를 사용한 모바일 결제에 대한 관심이 높아지고 있다. 기존의 NFC 모바일 결제 시스템은 쿠폰 사용, 포인트 결제 등 다양한 할인혜택을 제공한다. 하지만, 결제 시 할인혜택을 받는 과정에서 쿠폰 사용으로 인해 시간이 다소 소요되며 여러 번 통신으로 결제가 진행되어 사용자들로 하여금 불편하다는 문제가 발생한다. 따라서 본 논문에서는 NFC 환경에서의 mCoupon(mobile-coupon)을 이용한 안전하고 효율적인 통합결제 시스템을 설계하여 사용자들로 하여금 누구나 쉽게 사용할 수 있도록 구현한다.

• Journal of the Semiconductor & Display Technology
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• v.5 no.2 s.15
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• pp.33-36
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• 2006

Many issues arose to use the Pb-free solder as adhesive materials in MEMS ICs and packaging. Then this study for easy and simple sealing method using adhesive materials was carried out to maintain hermetic characteristic in MEMS Package. In this study, Hermetic characteristic using negative PR (XP SU-8 3050 NO-2) as adhesive at the interface of Si test coupon/glass substrate and Si test coupon/LTCC substrate was examined. For experiment, the dispenser pressure was 4 MPa and the $200\;{\mu}m{\Phi}$ syringe nozzle was used. 3.0 mm/sec as speed of dispensing and 0.13 mm as the gap between Si test coupon and nozzle was selected to machine condition. 1 min at $65^{\circ}C$ and 15 min at $95^{\circ}C$ as Soft bake, $200\;mj/cm^2$ expose in 365 nm wavelength as UV expose, 1 min at $65^{\circ}C$ and 6 min at $95^{\circ}C$ as Post expose bake, 60 min at $150^{\circ}C$ as hard bake were selected to activation condition of negative PR. Hermetic sealing was achieved at the Si test coupon/ glass substrate and Si test coupon/LTCC substrate. The leak rate of Si test coupon/glass substrate was $5.9{\times}10^{-8}mbar-l/sec$, and there was no effect by adhesive method. The leak rate of Si test coupon/LTCC substrate was $4.9{\times}10^{-8}mbar-l/sec$, and there was no effect by dispensing cycle. Better leak rate value could be achieved to use modified substrate which prevent PR flow, to increase UV expose energy and to use system that controls gap automatically with vision.

• Proceedings of the Korean Society of Computer Information Conference
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• 2012.07a
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• pp.235-236
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• 2012

현재 대부분의 사람들이 스마트폰을 사용하고 있다. 스마트폰 애플리케이션은 수만에서 수십만 개가 제공되고 있으며 활용 분야도 폭이 넓고 계속 발전하고 있다. 본 논문에서는 상점에서 직접 받는 기존의 종이쿠폰을 대신할 쿠펀즈(Coupon Fun Stack) 애플리케이션에 대해 제안하고 이를 개발한 내용에 대해 기술한다. 고객은 쿠펀즈 애플리케이션을 통해 자신이 방문하였거나 또는 방문할 관심있는 상점들의 쿠폰들을 등록할 수 있으며 이를 함께 관리할 수 있다. 또한 본 앱을 통해 등록된 상점의 상세정보를 볼 수 있으며, 고객은 해당 상점의 자신의 보유 쿠폰 현황과 서비스 정보를 볼 수 있다. 여러 장의 종이쿠폰을 대신할 본 앱을 통해 고객들은 간편함과 편리함을 얻게 될 것이며, 각 상점에서는 본 시스템을 갖춤으로써 고객들에게 좀 더 높은 질의 서비스를 제공할 수 있게 될 것이다.

• Journal of Korea Game Society
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• v.5 no.4
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• pp.39-48
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• 2005

The gift coupon system was introduced in the AWP(Amusement With Prize) Game Industry in February 2002 to revitalize the sluggish domestic game industry and establish the cultural industry base. Today, however, speculations regarding these coupons are fast becoming a serious social issue. Therefore, this study proposes the establishment of the MCTF Management System as a possible solution to the analysis and resolution of the problem of gift coupons aimed at promoting the AWP Game Industry and ensuring its soundness as well as bridging the gap between the domestic and international game markets in terms of the industrial structure; thus securing global competitiveness. Unlike any other measure taken to date to prevent speculations, the MCTF Management System can eradicate problems related to coupons offered for free in the AWP Game Industry. This strategic system consists of Merchandise Coupon Management, Central Management, Tripartite Guarantee Management, and Fund Management System. Finally, this system is expected to help root out the problems related to gift coupons.

• Proceedings of the Microbiological Society of Korea Conference
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• 2005.05a
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• pp.193.1-193
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• 2005