• 대한인간공학회지
• /
• 제26권3호
• /
• pp.117-124
• /
• 2007

A few people are frequently using Korean text entry function in the mobile phone. To make matters worse, too many kinds of Korean text entry methods exist in the market, compelling mobile phone users to learn how to input texts all over again, whenever they purchase a new mobile phone. The purpose of this study is to propose a universal design of Korean text entry method for mobile phones. Several experiments and several questionnaire surveys were conducted in order to induce design factors for the universal design. Participants were mobile phone users with the diverse levels of text entry expertise and with the diverse ages. The results of this investigation were identical, irrespective of participants' age and expertise. The efficiency of the text entry method was not more important factor than memorability. The layout of vowels to keypad was preferred to map just 3 strokes to the 3 buttons so that users can make for themselves vowels that they want to input. The preference on the consonants layout was different according to investigation methods. According to the survey, it was preferred that consonants were arranged by alphabet order. However, the result of text entry speed measurement was that the arrangement by alphabet order was not superior to the typical arrangement. Such results may be used to design mobile phones for diverse users.

• 대한인간공학회지
• /
• 제23권2호
• /
• pp.105-120
• /
• 2004

With the new technology and the popularization of mobile phone. the functions and designs of mobile phone have been varied rapidly. However. based on the user's level of familiarity on mobile phone function and knowledge of information technology. the using behaviors of mobile phone. especially between the young users who are well acquainted with the latest function and technology and the over middle-aged users who are relatively not. would be quite different. A survey was conducted to investigate the various using behaviors of mobile phone in different age groups. The total number of six hundred and sixty-seven people from age seventeen to sixty participated in this study. The participants were divided into young group (age between 17 to 29) and the over middle-aged group (age between 40 to 60) to compare the difference group considered design. price. and function of the mobile phone as three important factors. on the other hand. the over middle-aged group considered quality of communication. price and ease of use as three important factors. All the respondents of the young group know how to use the text messaging function. however for the over middle-aged group. 40% of the respondents knows how to use the text messaging function. The over middle-aged group seemed mainly use the mobile phone for voice communication. however the young group had a tendency to communicate each other with short text message rather than through voice conversation. Twenty percentage of young group responded that they had an experience of pain or discomfort at the thumb. the thenar eminence area. or carpus area during pushing the mobile phone keypad. The excessive frequent use of keypad may cause the risk of repetitive strain injury (RSI). The results of this study could provide important information to understand the way of using mobile phone in different age groups. and also could be used to design and market the mobile phone.

• 한국정밀공학회지
• /
• 제27권11호
• /
• pp.63-71
• /
• 2010

FormFactors is one of the most critical design factors in early development of mobile phone, and proper selection of FormFactors is necessary for smoothness of product development and customer satisfaction. Especially, emergence of mobile convergence added so various functions besides its original call function that importance of selecting FormFactors has increased because multiform FormFactors are needed. However there is problem such as frequent change of decision making in existing process because established process picks out FormFactors sensibly and arbitrarily through idea pull and so forth. We proposed FormFactors selection process by Axiomatic Design, set approach method and block approach method for reasonable and systematical FormFactors selection. First of all, we set the purpose of mobile phone development, and it is examined by Axiomatic Design. FormFactors design matrix is deduced through this process, the numbers of axes and rails are proposed using set approach method, and then patterns of FormFactors are embodied by block approach method. Particularly process application was tried through case study of mobile phone development, and we ensured that new FormFactors can be presented to a designer by systematical verification if change of customer requirements occurs through our process.

• Journal of information and communication convergence engineering
• /
• 제7권4호
• /
• pp.525-529
• /
• 2009

On the limited urban area meteorological data are hard to be collected because of the cost problem. The facilities collecting the data require high installment cost. Recently, the sensor network technique comes to the fore as a solution. Furthermore a mobile phone also becomes to be recognized as a sensor. This paper studies an application to service the meteorological map using mobile phone sensor. A design results for system implementation are introduced in this paper.

• 복식문화연구
• /
• 제27권6호
• /
• pp.666-680
• /
• 2019

Prevalent usage of mobile devices among consumers has been well recognized and this is especially imperative among young adult consumers. The mobile phone became the gateway of their communication, media consumption, retail transaction, education, and (virtual) social life. However, there is little empirical research explaining the dynamics behind the psychological underpinning of young adult consumers, specifically Generation Y, to understand their usages and dependency on mobile phones. This study, therefore, aims to unveil antecedents and consequences of Gen Y consumers' mobile phone dependency from a media psychological perspective. We developed a conceptual model based on theory of self-monitoring (Snyder 1974, 1987), extended self-concept (Belk, 1988), and media dependency theory (Ball-Rokeach & Defluer, 1976). Four hundred ninety-eight students in the U.S. provided usable responses to our pencil-and-paper survey. Causal modeling analysis results demonstrated that both ability to modify one's behavior and sensitivity to cues for social appropriate behavior dimensions of the self-monitoring tendency positively predicted one's level of fashion involvement, which in turn positively predicted his/her mobile phone dependency. Individual's mobile phone dependency, fashion involvement and self-monitoring's ability dimension exhibited positive and direct impact on one's perception of the salience of mobile phone case product attributes. Based on the findings, we provided pragmatic and theoretical implications for the industry and academia.

• 한국HCI학회논문지
• /
• 제3권1호
• /
• pp.39-47
• /
• 2008

최근 몇 년 사이 중국의 경제가 발전함에 따라 소득의 증가로 인해 모바일폰이 급속하게 대중화되면서 더 좋은 제품을 사고자 하는 욕망이 중국 소비자들로 하여금 디자인에 큰 관심을 보이게 만들었다. 또한 세계화로 인한 다량의 문화적 홍수 속에서 중국 소비자들은 예전의 획일화된 제품보다는 자신이 좋아하는 제품을 선호하는 개인화로 이어진다. 이러한 경향은 개성적인 멀티 컬러 모바일폰과 모바일폰 디자인의 아트화로 이어졌다. 그에 반해 아직 중국 모바일폰 디자인 시장은 미성숙 됐고 identity 부족과 디자인 모방의 문제점 등이 있다. 이 연구에서는 전통 요소를 사용하여 특징 있는 모바일폰 디자인의 개발과 문화아이덴티티와 궁극적으로는 중국전통 요소를 가지고 있는 퍼스널아이덴티티를 잘 혼합한 중국의 모바일폰 디자인 아이덴티티의 구축에 목적을 두고 있다. 본 연구방법으로 전통문양, 색채 등 전통요소를 살펴보고 동시에 핸드폰 디자인의 발전과정과 특징을 알아봤고 전통패턴을 활용한 모바일폰 에니메이션을 연구하고 모바일폰 디자인을 개발하였다. 중국의 전통과 이미지의 특징을 활용한 문양을 사용함으로써 전통적이면서도 가장 중국의 특징이 있는 세계적인 디자인의 개발이 가능하다. 중국 전통문양을 활용한 디자인이 부족한 실정이며 전통 문양을 사용함에 따라 모바일폰 디자인이 훨씬 더 다양하고 개성적으로 될 수 있다. 색 또한 한 가지 색만 사용하는 것이 아닌 멀티컬러를 사용할 수 있으며 이러한 디자인 사례는 시크한 이미지를 보여주며 장식적인 효과가 크다. 본 연구자는 향후에 중국적인 특징의 문양뿐만 아니라 한국, 일본의 특징 있는 문양을 활용하여 모바일폰 디자인을 개발하고자 하며 다양한 문양을 사용하여 모바일폰 브랜드를 개발하고자 한다. 또한 모바일폰 내장의 영상 애니메이션을 개발하고 싶다.

• 한국디자인학회:학술대회논문집
• /
• 한국디자인학회 2003년도 가을학술발표대회
• /
• pp.92-93
• /
• 2003

• 한국디자인학회:학술대회논문집
• /
• 한국디자인학회 2004년도 추계 학술발표대회 논문집
• /
• pp.100-101
• /
• 2004

• 한국CDE학회논문집
• /
• 제15권5호
• /
• pp.325-332
• /
• 2010

A lens system for mobile phone cameras is comprised of various lenses and designed so as to satisfy design requirements for responses such as a modular transfer function (MTF). However, it is difficult to manufacture and assemble camera modules to maintain the same performance compared with the designed camera modules, because of uncertainty. We should always design a lens system by considering uncertainty that can be caused by errors in the manufacturing and assembly process of mobile phone cameras. The robust optimization offers tools of making robust decisions with the consideration of design parameters, uncontrollable parameters, and the variance of the system. Using an efficient reliability analysis method and an optimization algorithm, we obtained robust optimization results that maximize the mean of MTF and minimize the standard deviation and proposed a new robust design process for a lens system.

• 한국기계가공학회지
• /
• 제4권3호
• /
• pp.20-31
• /
• 2005

The contents of mobile phones are rapidly appended and the structures are being changed substantially. Most of the problems with mobile phones are related with the vibrations and the displacements of PCB boards. In this study, the vibration magnitudes of the boards by impulses on the case are analyzed with the variations of the selected design parameters. The result shows that the extensive suppression of the vibrations are feasible by the proper selection of the design parameters. Also the suggested relationships between the parameter selections and the magnitudes of vibrations can be applied to establish a database for improved stability of the mobile phone structure which is a critical concern considering the short life span of the mobile phone models.