• Journal of the Korea Institute of Information and Communication Engineering
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• v.5 no.7
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• pp.1195-1203
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• 2001

The tophead monitor is a dual screen monitor that concludes auxiliary monitor with size 6.4 inch on the top of monitor. The bottom monitor screen provide previous function in the same way as before and the auxiliary monitor screen is arranged contents of internet advertising icon, banner advertising icon, moving picture screen, mail icon, etc. If you click contents, contents is moved peristaltically with the bottom monitor screen. The dual monitor screen is controlled by mouse and keyboard in the same way as before.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.25 no.1
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• pp.71-77
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• 2002

This study deals with noise occurring in the process of human information transmission. Human process many kinds of information by receiving them from the outside or using their own thought and express the processed information to the outside by acting. In this process, Channel Noise ($C_N$) is defined as the characteristics of noise generating the incomplete result for the external stimulus. To evaluate $C_N$, keyboard-typing experiment has been performed to the 87 subjects. In this experiment, the subject consists of college students who have abundant experience in computer usage. In the experiment, there were some cases that typing order was unconsciously reversed. In this study, we deal with only these cases since these cases can be used as important data to study humans information transmission system.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.21 no.48
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• pp.253-262
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• 1998

The purpose of this study is to suggest prevention methods for the health of VDT workers by an ergonomic survey and analysis of body discomfort. Totally 150 VDT workers(male; 78, female; 72) were investigated with questionnaire. From the results of survey, average of the subjects age was 28.5 years(male; 29.7, female; 27.2), average working period was 5.4 years(male; 5.2, female; 5.6), average VDT working hours was 6.3 hours(male; 6.2, female; 6.4) and workers who answered that they use VDT for more than 5 hours a day were over 79%. Among the questionnaires 10.7% and 7.3% of VDT workers complained the discomfort of their neck and lower back, respectively. VDT workers responded that the height of chair, keyboard and computer monitor were the main reasons for feeling discomfort. The results suggest that the VDT syndrome prevention program should be developed for safety and health of the VDT workers.

• Journal of the Ergonomics Society of Korea
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• v.18 no.3
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• pp.105-125
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• 1999

As speech is the human being's most natural communication medium, using it gives many advantages. Currently, most user interfaces of a computer are using a mouse/keyboard type but the interface using speech recognition is expected to replace them or at least be used as a tool for supporting it. Despite the advantages, the speech recognition interface is not that popular because of technical difficulties such as recognition accuracy and slow response time to name a few. Nevertheless, it is important to optimize the human-computer system performance by improving the usability. This paper presents a set of guidelines for designing speech recognition interfaces and provides a method for evaluating the usability. A total of 113 guidelines are suggested to improve the usability of speech-recognition interfaces. The evaluation method consists of four major procedures: user interface evaluation; function evaluation; vocabulary estimation; and recognition speed/accuracy evaluation. Each procedure is described along with proper techniques for efficient evaluation.

• Proceedings of the IEEK Conference
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• 1998.06a
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• pp.839-842
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• 1998

The wide spread of multimedia system demands a large viewin gdesply device which can inform a message to many peoples in open area. This paper is about the design, simulating and testing of a large viewing LED pannel control ASIC(application specific integrated circuit). This LED pannel control ASIC runs on 16 bit microprocessor MC68EC000 and has following functions:16 line interlaced LED pannel controller, memory controller, 16 channel priority inerrupt controller, 2 channel direct memory access controller, 2 channel 12 bit clock and timer, 2 channel infrared remocon receiver, 2 channel RS-232C with 16byte FIFO, IBM PC/AT compatible keyboard interface, battery backuped real time clock, ISA bus controller, battery backuped 256 byte SRAM and watech dog timer. The 0.6micron CMOS sea of gate is used to design the ASIC in amount of about 39,000 gates.

• Proceedings of the Korean Society of Computer Information Conference
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• 2013.07a
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• pp.73-74
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• 2013

터치 디스플레이 기술이 발달함에 따라 이를 이용한 스마트 폰을 비롯한 스마트 테이블, 스마트 월 등 다양한 HW 플랫폼들이 대두되고 있다. 특히, 터치 디스플레이의 대형화가 가능해짐에 따라 이를 기반으로 다양한 서비스가 제공될 것으로 예상된다. 이를 이용하는 서비스들은 멀티 터치를 기반으로 한명 이상의 사용자 입력을 필요로 할 수 있다. 이에 따라 터치 디스플레이의 주요 입력 도구인 가상 키보드 역시 마찬가지의 요구사항이 있다. 본 논문에서는 리눅스 환경에서 차세대 윈도우즈 매니저(Wayland/Weston)을 기반으로 가상 키보드 등록, 생성 및 사용 과정에 대해 분석하고, 멀티 가상 키보드를 지원하는 윈도우 매니저를 설계 및 구현한다.

• Journal of information and communication convergence engineering
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• v.2 no.4
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• pp.233-236
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• 2004

This paper shows the easy way to composite a music for non-musicians. Namely, only select a chord and put it to special program which called "the chord composition program", and then the composition program creates the rest chords. After doing this process, non-musicians overwrite their own melodies in accordance with created chords. Finally, they can perform their own music with the sound of master-keyboard and other sound sources by using the band-in-a-box program.x program.

• 제어로봇시스템학회:학술대회논문집
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• 2001.10a
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• pp.102.2-102
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• 2001

In this study, a solid-state laser system adopting a new real time multi-discharge (RTMD) method in which three flashlamps are turned on consecutively was designed and fabricated to examine the pulse width and the pulse shape of the laser beams depending upon the changes in the lamp turn-on time. That is, this study shows a technology that makes it possible to make various pulse shapes by turning on three flashlamps consecutively on a real-time basis with the aid of a PIC one-chip microprocessor, With this technique, the lamp turn-on delay time can be varied more diversely from 0 to 10 ms and the real-time control is possible with an external keyboard, enabling various pulse shapes. In addition, longer pulses can be more widely used for industrial processing and lots of medical purposes.

• Journal of the Ergonomics Society of Korea
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• v.9 no.2
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• pp.21-28
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• 1990

The robot motion control in the industrial robot is generally executed by the teach pendant. But, it requires much teaching time and workload to the operators. This study suggests the use of the robot motion control method by the computed keyboard in the industrial robot instead of the teach pendant. TES/CCS(Teaching Expert System/Cartesian Coordinate System) and TES/WCS(Teaching Expert System/World Coordinate System) that have been proposed to improve the robot motion control are applied for this concept. This study is intended to improve the robot motion control in TES/CCS. Parameter limitation problems in getting the motion data on position and posture of the robot in macro motion control are solved by proposed geometric algorithm. This result demonstrates reduction of the average teaching task time to the teaching position.

• Journal of the Ergonomics Society of Korea
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• v.10 no.1
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• pp.3-10
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• 1991

The teach pendant and keyboard have been used as an input device of control command in human-robot sustem. But, many problems occur in case that the usef is a novice. So, speech recognition system is required to communicate between a human and the robot. In this study, Korean voice commands, eitht robot commands, and ten digits based on the broad phonetic analysis are described. Applying broad phonetic analysis, phonemes of voice commands are divided into phoneme groups, such as plosive, fricative, affricative, nasal, and glide sound, having similar features. And then, the feature parameters and their ranges to detect phoneme groups are found by minimax method. Classification rules are consisted of combination of the feature parameters, such as zero corssing rate(ZCR), log engery(LE), up and down(UD), formant frequency, and their ranges. Voice commands were recognized by the classification rules. The recognition rate was over 90 percent in this experiment. Also, this experiment showed that the recognition rate about digits was better than that about robot commands.