• 한국HCI학회:학술대회논문집
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• 2006.02b
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• pp.524-529
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• 2006

짧은 기간에 비약적으로 기술이 발전하는 시대에는 사용자의 미래환경과 그에 따른 사용자의 행태를 미리 분석할 수 있는 방법이 절실히 요구된다. 본 연구에서는 블루투스 핸즈프리 헤드셋의 UI 디자인 개발을 위해 사용된 사용자의 제품 사용행태 예측 과정을 통해 그 방법론을 제시하고자 한다. 1 차로 블루투스 핸즈프리 헤드셋 사용자가 그것을 사용하는 사용행태를 조사 분석하였으며, 조사의 결과를 인터랙티브 스토리텔링의 방법으로 구성하여 아이디어개발을 위한 보조도구로 개발하였다. 조사의 대상은 블루투스 헤드셋의 주요 사용자 층인 10 대 후반에서 20 대 중반에 속하는 사용자 그룹이며 블루투스 헤드셋으로 변용 가능한 패션 액세서리를 선정하고 선정한 액세서리를 블루투스 핸즈프리 헤드셋으로 가정하여 사용시의 그들의 사용 포즈를 분석하는 방법을 통해 주사용자 층의 사용행태를 예측하고자 하였다. 이 연구의 결과는 블루투스 헤드셋 개발팀내의 기획자, 기술자, 디자이너들이 제품의 개발 방향에 대한 아이디어 공유를 위하여 Macromedia Flash 를 사용하여 인터랙티브 스토리텔링으로 제작하여 디자인을 위한 보조 툴로 제안하였다. 본 연구는 블루투스 핸즈프리 헤드셋과 같이 사용자의 새로운 요구와 사용성이 기대되는 제품 UI 디자인을 위해서는 사용자의 미래 요구사항을 예측 할 수 있는 방법이 필요하다는 배경에서 시작되었으며, 블루투스 핸즈프리 헤드셋의 사용자의 요구 파악 및 예측을 위한 방법으로 제품과 사용자의 사용 포즈를 연계하여 분석하는 방법을 제안하였다.

• Proceedings of the IEEK Conference
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• 2000.11a
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• pp.57-60
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• 2000

In this paper, we describe the implementation of Bluetooth headset. Bluetooth headset sets up link using ACL connection between headset and audio gateway, transfers 64kbps voice using SCO connection. Bluetooth headset implemented in this paper is designed with no HCI, so all protocol stack is implemented in Bluetooth module. We verify the upper layer protocol and application program using C-language modeling on Unix environment.

• The Journal of the Korea Contents Association
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• v.16 no.9
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• pp.739-750
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• 2016

The most of virtual reality headset have the separated controllers while they put on the headset; so the users may feel the discomfort and burden for the operation. In this paper, a novel virtual reality headset system using the EOG (electro-oculogram) is proposed and it has a distinguished feature that the user does not need to control the virtual reality headset by the hands, but the displayed contents are controllable by the electrical activity of the user's brain. The proposed system consist of the mobile device, a virtual reality headset, and an EOG headset for data acquisition. The system is implemented by using the Unity3D engine for the signal processing and controller, and the concept is confirmed through the implementation that it is more interesting and easier to control the virtual reality headset.

• Journal of the Korean Society of Radiology
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• v.12 no.3
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• pp.335-341
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• 2018

With the improvement of medical state, patients' expectations for the most advanced medical equipment are increasing. Particularly, Magnetic Resonance Image (MRI) is used as one of the core image diagnosis methods in all clinical area. However, it has been reported that many of patients who go through the examination suffer from anxiety to the severe noise level during the examination. In this study, both the noise reduction evaluation of headsets with sound-blocking materials added to existing sound-absorbing materials and the existence of sound blocking materials as artifacts on the examination image are tested. An MRI test noise is recorded as a speaker by cross-ordination the sound material (sponge) and the sound material (acrylic plate, copper plate, and 3D copper plate) inside the headset made from 3D pring. A quantitative assessment of headsets showed that the average headset value was 81.8 dB. The average dB value of the most soundproof material combination(Copper, acrylic plate, sponge, sponge) headsets on headsets with added charactering material was measured at 70.4 dB, and MRI showed that the copper was diamagnetic substance and excluded. The second most soundproof headset(Sponge, acrylic plate, 3D copper plate, sponge) was measured at 70.6 dB and MRI showed no artifacts. The same simulation of the material printed with a 3D copper PLA containing approximately 40 % copper powder resulted in no artifacts, therefore, the material output as a 3D printing was better suited for use. For MRI related research, the mutual development of 3D printing is highly anticipated.

• Proceedings of the Korean Society of Computer Information Conference
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• 2015.07a
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• pp.97-98
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• 2015

본 논문에서는 자이로스코프 센서를 장착한 헤드셋 모델을 소개한다. 이 헤드셋은 교육용으로 설계 되었으며 자이로스코프 센서로 사용자의 위치 및 상태에 따라 장애물에서 송출되는 소리가 다르게 들린다. 사용자의 키 정보를 입력하면 좌우 방향은 물론 상, 하를 인식하여 충돌 반경을 더 세부적으로 조절할 수 있다. 본 논문에서 제안하는 기술을 통하여, 후천적 시각장애인의 경우 '물리적 위험'이 적은 상태에서 지형 정보와 그에 따른 행동을 학습할 수 있을 것이다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.16 no.12
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• pp.2595-2600
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• 2012

In this study, we propose the new interface system for the disabled and old people who do not well using electronic equipment that is used physical switch interface system. The proposed new interface system is consisted of speech and motion recognition system. Speech recognition system is mike in the headset, and motion recognition system is 3-axis accelerometer in the headset. In order to verify the usefulness of the proposed system, we make an experiment on new interface.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.7 no.6
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• pp.1138-1145
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• 2003

The Bluetooth wireless technology is the new short-range RF transmission standard for low-power, low-cost, short-range radio links between mobile devices and electric product. The technology can eliminate the confusion of cables, connectors and protocols confounding communications between devices. Mobile phones, pagers, laptops, PDAs, digital cameras and more, all now have a common structure for communicating across their product platforms. In this paper, we present the Bluetooth protocol stack and headset profiles for the communication between mobile phone and headset. And then, we construct application software which is embedded in the device that operates an application over the Bluetooth protocol stack Next we implement wireless headset using MSP430, not real time operating system.

• The KIPS Transactions:PartC
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• v.11C no.4
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• pp.539-544
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• 2004

This paper presents the implementation of the bluetooth headset and the audio gateway connected to the mobile Phone in the embedded environment. The bluetooth module includes the BC02 processor chip, the BCSP02 firmware and the bluelab software Including bluetooth protocol stack. The above components in the bluetooth module developed at CSR company are used as the development environment. The application program using API functions supported by bluelab is coded by C language and loaded on the flash ROM of the bluetooth module. The cail processing capacity measuring the call setup time and the clearing time between the audio gateway and the headset is considered as the performance parameter of the developed systems. As a call setup and clearing time between the audio gateway and the headset is about 88.8ms, the call processing capacity is about 11 calls per second. Therefore the performance result is satisfied in the aspect of the call processing time.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.13 no.6
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• pp.1188-1193
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• 2009

Todays, many young people suffer from noise-induced hearing loss by using wearable hearing devices, such as Bluetooth headset. This paper present hearing loss reduction and more natural volumn control algorithms considering individual hearing characteristics and threshold of feeling for Bluetooth headset. Experimental results using CSR Bluetooth headset example design board(DEV-PC-1645) show that individuals maybe able to perceive without the inconvenience at the less sound intensity and the more sensitive frequency bands. As a result, we may prevent hearing loss to reduce excessive sound energy in each frequency bands.

• The Optical Journal
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• s.168
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• pp.42-47
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• 2017