• Journal of the Institute of Electronics and Information Engineers
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• v.53 no.12
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• pp.76-81
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• 2016

The Internet of Things (IoT) interconnects every device by allowing them to communicate directly and share information with each other and has been recently applied to various industrial fields. The integration of home appliances with IoT has led to the creation of new markets by providing quick and better experience to consumers. Although IoT has been integrated into most modern day appliances, there have been few developments for kitchen appliances. This paper presents the development of integrating IoT with the blender, one of the most widely used appliance in the kitchen. A custom application was made to interact with the blender that provides three main functions: digital controller, maintenance, and defrosting alarm. The function of digital controller provides wireless control to the conventional blender. The maintenance function detects and alerts the user on blender reliability with the intent of enabling the anticipation of hardware failures. The defrost alarm alerts the user when the ingredient has reached the appropriate and desired temperature when cooking frozen food.

• Journal of Digital Contents Society
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• v.7 no.2
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• pp.103-108
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• 2006

Short-range wireless communication and networking technologies are becoming increasingly important in enabling useful mobile applications. for example, ZigBee technology is expected to provide low cost and low power connectivity for equipment that needs battery life as long as several months to several years. In addition, ZigBee can be implemented in mesh networks larger than is possible with Bluetooth. The main features of this ZigBee standard are network flexibility, low cost, very low power consumption, and low data rate in an adhoc self-organizing network among fixed, portable and moving devices. Home network/Home automation is one of the key market areas for Zigbee, with an example of a simple network This paper investigates the effect of short range wireless channel on the performance of Zigbee system and DSSS-BPSK signal transmission in AWGN, interference and Rician fading environments. And we investigate performance degradation due to interference and fading effects in short range wireless channel. In particular, the impacts of the fading and interference level on the bit error probability is shown in BER performance figures.

• Journal of Internet of Things and Convergence
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• v.2 no.2
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• pp.15-20
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• 2016

MicroSoft Windows 10 IoT version, released in August 2015, successfully drew consumer interest by introducing the familiar Windows into the IoT market, and enabled an easier system construction of IoT web servers. Meanwhile, overdiagnosis has recently emerged as a controversy in medical society. Establishment of communication between IoT servers and medical devices will send treatment results to users and activate communication between hospitals, greatly reducing this problem. The IoT server, with its limited resources, utilizes lightweight protocols that do not generate traffic and are easy to use. This paper proposes IoT networks which will enable medical devices to easily provide ubiquitous environments to their users, through utilization of the lightweight Simple Service Discovery Protocol (SSDP) and the secure Extensible Messaging and Presence Protocol (XMPP).

• International Commerce and Information Review
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• v.16 no.5
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• pp.27-47
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• 2014

Gartner mentioned IoT (Internet of Things) as one of the ten growth engines in the world in 2014. In addition, IoT has been frequently invited as a theme by participants at CES held in the early this year. Gartner predicts that the number of devices connected will reach to 26 billion and a total of economic value added will grow to 1.9 trillion dollars until 2020. The definition of IoT has been arranged in a different way by each institution. Therefore, this study arranged the concept of IoT which has been variously defined and used together with M2M and IoE. Further, forecasts presented by research institutions which stated domestic and foreign market outlook were collected and arranged. As IoT is on the uptrend and is selected as one of the ten growth engines in the world, it was found out how policies on IoT in the US, China, Japan and Korea were established and promoted as well as how recent strategies on IoT of major large companies have been carried out. Lastly, the following countermeasures of our government and companies were discussed.

• Resources Recycling
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• v.27 no.3
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• pp.16-29
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• 2018

In this study, metal and nonmetal contents and their economic values in ICT devices such as smart phones and laptop computers were evaluated. The electronic devices made by LG and Samsung were disassembled into 5 parts, which are printed circuit board assembly, battery, display, case and other electronic components. Metal and nonmetal contents in these parts were analyzed, and their economic values were calculated via multiplying the materials' contents by metal price obtained from KOMIS or nonmetal exchange price acquired from Korean recycling markets. Finally, the materials' contents and values according to each electronic parts and electronic devices were calculated. The results showed that the value of the smartphones and laptop computers of LG are 4,449.6 KRW (28,506 KRW/kg) and 6,830.2 KRW (7,053 KRW/kg), and those of Samsung are 1,849.3 KRW (13,499 KRW/kg) and 6,667.5 KRW (4,831 KRW/kg), respectively. It was also found that most of the value was concentrated in batteries and printed circuit board assemblies. In addition, Co, Au and Cu were found to be the most valuable resources in the devices.

• Journal of Digital Convergence
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• v.12 no.9
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• pp.169-175
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• 2014

The ICT (information and communication technology) paradigm shift, including the burgeoning use of mobile, SNS, and smart devices, has resulted in an explosion of data along with lifestyle changes. We have thus arrived at the age of big data. In the meantime, a number of difficulties have arisen in terms of cost or on the technical side with respect to the use of large quantities of data. However, big data has begun to receive attention with the advent of efficient big data technologies such as Hadoop. In this paper, we discuss the patent analysis of big data platform technology research and development in major countries. Especially, we analyzed 2,568 patent applications and registered patents in four countries on December 2010.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.2
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• pp.790-794
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• 2012

A output strength is limited according to the frequency used in order to protect other wireless stations from interference caused by radio waves emitted from the low power wireless installations. For receivers, unwanted spurious emission is regulated, and regulations in Korea define that additional spurious emission for receivers in the low power wireless installations under 1GHz should be -54dBm, but no regulations have been established yet for low power wireless installations over 1GHz. It is presently required to set domestic standards for devices over 1GHz on account of the expansion of the communication market and its service.

• Proceedings of the Korean Information Science Society Conference
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• 2011.06a
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• pp.170-173
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• 2011

본 논문에서는 모바일 소프트웨어 플랫폼 유지 보수성 개선 목표로 수행된 리엔지니어링 (Reengineering) 사례를 소개한다. 모바일 소프트웨어 플랫폼은 높아진 사용자 기능 요구 같은 대외적인 문제와 다양한 서비스 경쟁력 확보를 위한 제조사 내부적인 노력으로 인해 소프트웨어 규모와 복잡도가 급격히 증가하고 있는 상황이다. 기반 시스템으로서 모바일 소프트웨어 플랫폼은 기존 레거시(legacy) 시스템을 재사용하여 상품화를 수행하는 일반 임베디드 시스템 개발 특징과 이동 통신 사업자 요구사항 대응, 다양한 시장 및 다양한 하드웨어 빛 표준화 대응, 다양한 도메인 (domain) 이 하나의 기기에서 통합된 형태로 동작해야 한다는 점에서 다른 임베디드 시스템과 차별화된다고 볼 수 있다. 모바일 소프트웨어 플랫폼을 대상으로 한 성공적인 리엔지니어링 수행은 기반 시스템의 유지보수성 향상은 물론 연간 수십 개에 달하는 파생 시스템의 재사용성 및 생산성 향상을 기대할 수 있다. 본 연구에서는 사내 표준 프로세스를 재정의하고, 모바일 소프트웨어 플랫폼만의 특성을 고려하여 수행한 리엔지니어링 사례를 소개하고자 한다.

• Transactions of the KSME C: Technology and Education
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• v.5 no.1
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• pp.1-6
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• 2017

From early simple bulky detectors to show the existence of some specific material, sensor has been developed to miniature smart sensors embedded signal capabilities with a help of nano/micro engineering such as innovative nano materials and semiconductor process technologies. Due to recently fast sales of smart phones with simple telephone function plus many sensors, internet accessing capabilities, easy user downloadable "app" softwares, smart sensor industry market has expanded very fast. If driver-less cars, wearable electronic devices and smart robots will be introduced into market in near future, development of many various smart sensors will be needed.

• Journal of Korea Game Society
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• v.11 no.6
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• pp.95-102
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• 2011

At present, with the rise of smart-phone market supported the Wi-Fi, smart-phone based network content has propagated rapidly. But, network content service is difficult in feature phone and multimedia device not supporting the Wi-Fi or supporting only the bluetooth. This paper was used the zigbee technology supporting low power, low cost, availability, multi channel, broadcasting compared to the bluetooth or Wi-Fi. It will provide a variable network game development by utilizing the zigbee technology. Also, it is provide the development of variable mobile network contents using the zigbee.