• Title, Summary, Keyword: Bluetooth

Search Result 1,389, Processing Time 0.036 seconds

Study on Sound Quality Improvement in Bluetooth Headset (블루투스 헤드셋에서의 음질 향상에 관한 연구 - 개인 청각손실 방지측면 고려 -)

  • Kim, Hyun-Tae;Park, Jang-Sik;Song, Jong-Kwan
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.13 no.6
    • /
    • pp.1188-1193
    • /
    • 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.

HC-06 Bluetooth based driver module for emergency LED Multi-Directional Indicator

  • Jung, Joonseok;Kwon, Jongman;Mfitumukiza, Joseph;Jung, Soonho;Lee, Minwoo;Cha, Jaesang
    • Journal of Satellite, Information and Communications
    • /
    • v.12 no.1
    • /
    • pp.114-119
    • /
    • 2017
  • In this paper we present the search on HC-06 Bluetooth based driver module for emergency LED Multi-Directional Indicator. Nowadays, a growing trends in which electronic displays such as LED, LCD or plasma monitors are being installed in public places like bars, stores, entertainment areas, restaurants, lobbies, etc. In this paper, the study is curried out on efficiency of HC-06 Bluetooth module based controller driver that relates generally to the field of emergency signage management systems for displaying various indicator contents remotely on electronic displays in public and privates venues. It allows user smart devices interaction remotely with digital signage by providing content for displaying on at least one display in a venue. Depending on the emergency case, HC-06 Bluetooth based driver module proves the high efficiency as well as good performance of processing and communicating remotely the indicator based message that is displayed from a venue management control system by using smart devices. The system combines smart device that linked to HC-06 Bluetooth module with ATmega168/328 embedded micro controller which result by switching the displayer containing the digital signage indicator based message.

Robotic Agent Design and Application in the Ubiquitous Intelligent Space (유비쿼터스 지능형 공간에서의 로봇 에이전트 설계 및 응용)

  • Yoon Han-Ul;Hwang Se-Hee;Kim Dae-Wook;Lee Doong-Hoon;Sim Kwee-Bo
    • Journal of Institute of Control, Robotics and Systems
    • /
    • v.11 no.12
    • /
    • pp.1039-1044
    • /
    • 2005
  • This paper presents a robotic agent design and application in the ubiquitous intelligent space. We set up an experimental environment with Bluetooth host, Bluetooth client, furniture and home appliance, and robotic agents. First, the agents basically performed patrol guard to detect unexpected penetration, and to keep home safely from gas-leakage, electric leakage, and so on. They were out to patrol fur a robbery while navigating in a living room and a private room. In this task, we used an area-based action making and a hexagon-based Q-learning to control the agents. Second, the agents communicate with Bluetooth host device to access and control a home appliance. The Bluetooth host offers a manual control to person by inquiring a client robot when one would like to check some place especially. In this exercise, we organize asynchronous connection less (ACL) between the host and the client robots and control the robot maneuver by Bluetooth host controller interface (HCI).

Development of Software Mobile Controller Contents using Bluetooth Module (블루투스 모듈을 이용한 소프트웨어 모바일 컨트롤러 컨텐츠 개발)

  • Wang, Duck-Sang;Ahn, Ju-Young;Choi, Sun;An, Beong-Ku
    • The Journal of the Institute of Internet, Broadcasting and Communication
    • /
    • v.9 no.5
    • /
    • pp.39-44
    • /
    • 2009
  • In this paper, we propose and develop software controllable mobile controller contents using bluetooth concepts. The main features of the propsed system are as follows. Bluetooth communication is used for between smart phone and bluetooth. We develop two kinds of programs, clients and server, in which clients requests bluetooth communication and server responds. It's controllable to move toward the previous page and next page, and GUI environments can give efficient user oriented services. The results of performance evaluation show relatively good performances in view points of prices, functions, and portability.

  • PDF

Study on the Transmission of Medical Information using Bluetooth Technology (블루투스를 이용한 의료정보 신호의 전송에 관한 연구)

  • 엄정규;김영길
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.5 no.2
    • /
    • pp.297-301
    • /
    • 2001
  • In this paper, a system that transmits ECG signals which get from hand baggage ECG is implemented by using Bluetooth technology. Bluetooth technology is a close range wireless communication used wireless frequency 2.4GHz bandwidth. This technology consumes very small power and provides high reliability also self error correction with high speed frequency hopping. Because every device which uses Bluetooth protocol can communicate each other. These can connect between the system implemented and any devices such as mobile telephone with Bluetooth module, notebook, and the personal mobile device. Also, the paper proposes capability of transmission to the sever of hospital through each type of wireless communication device that acquired medical information signals in mobile medical machine. The system consists of hardware parts with Bluetooth module and host part, and software parts with blutooth protocol stacks. The host precesses a connection with other device and transmits ECG signals with bluetooth frequency hopping sequence.

  • PDF

The Design of Remote Control System using Bluetooth Wireless Technology (블루투스 무선기술을 응용한 원격제어 시스템의 설계)

  • 전형준;이창희
    • Journal of the Korea Computer Industry Society
    • /
    • v.4 no.4
    • /
    • pp.547-552
    • /
    • 2003
  • In this thesis, interference phenomena of bluetooth networks requiring Security were minimized; strengthened security of piconet by assigning an identical PIN code to bluetooth devices, which was establishing a specific piconet during authentication stage. To establish a bluetooth piconet system. an unique ID was assigned to each bluetooth device, communication algorithms having different data formats between devices was designed, and an embedded hardware module using ARM processor and uCOS-II RTOS was implemented. About 30% of CPU efficiency in the module was increased by modifying functions including block parameters to work as nonblocking; by the increased efficiency of total piconet, the module could be used as an access point. The module could transmit maximum 10 frames of image and also audio signal by switching the packet effectively according to channel condition. By above-mentioned process, video, audio, and data could be well transmitted by the bluetooth managing program and the possibility of a commercial remote control system using bluetooth technology was suggested.

  • PDF

Design and Implementation of Class Structure for Bluetooth HCI Layer (블루투스 HCI 계층을 위한 클레스 구조의 설계 및 구현)

  • Kim, Sik;Ryu, Su-Hyung
    • The Journal of Information Technology
    • /
    • v.5 no.1
    • /
    • pp.69-77
    • /
    • 2002
  • The Bluetooth is expected to be one of the most popular wireless telecommunication technology in the near future, and the protocol stack is essential to providing the various services with the Bluetooth-embedding systems or devices. The Bluetooth specification is an open, global specification defining the complete system, however, the protocol stack is usually implemented partly in hardware and partly as software running on its system, with different implementations partitioning the functionality between hardware and software in different ways. I investigate how to design and implement the Bluetooth protocol stack according to its specification. I focus on the HCI and the lower layer of the software protocol stack as a basic step for the development of our own protocol stack. As a result, paper provides how to partitioning the role of HCI layer, and how to implement the relationship between HCI packets, it's functionality and the flow control. Experiments show the discovering other Bluetooth devices and their connection. Furthermore experiments demonstrate the proper operation of data communication between the Bluetooth modules.

  • PDF

Self-Diagnostic Signal Monitoring System of KWP2000 Vehicle ECU using Bluetooth

  • Choi, Kwang-Hun;Lee, Hyun-Ho;Lee, Young-Choon;Kwon, Tae-Kyu;Lee, Seong-Cheol
    • 제어로봇시스템학회:학술대회논문집
    • /
    • /
    • pp.132-137
    • /
    • 2004
  • On-Board Diagnostic(OBD) systems are in most cars and light trucks on the load today. During the 1970's and early 1980's manufacturers started using electronic means to control engine functions and diagnose engine problems. The CARB's diagnostic requirements to meet EPA emission standards have been designated as OBD with a goal of monitoring all of the emissions-related components, as well as the chassis, body, accessory devices and the diagnostic control network of the vehicle for proper operation. In this paper, we present a remote measurement system for the wireless monitoring of diagnosis signal and sensors output signals of ECU adopted KWP2000, united the OBD communication protocol, on OBD-compliant vehicle using the wirless communication technique of Bluetooth. In order to measure the ECU signals, the interface circuit is designed to communicate ECU and designed terminal wirelessly according to the ISO, SAE regulation of communication protocol standard. A microprocessor S3C3410X is used for communicating ECU signals. The embedded system's software is programmed to measure the ECU signals using the ARM compiler and ANCI C based on MicroC/OS kernel to communicate between bluetooth modules using bluetooth stack. The diagnostic system is developed using Visual C++ MFC and protocol stack of bluetooth for Windows environment. The self-diagnosis and sensor output signals of ECU is able to monitor using PC with bluetooth board connected in serial port of PC. The algorithms for measuring the ECU sensor output and self-diagnostic signals are verified to monitor ECU state. At the same time, the information to fix the vehicle's problem can be shown on the developed monitoring software. The possibility for remote measurement of self-diagnosis and sensor signals of ECU adopted KWP2000 in embedded system verified through the developed systems and algorithms.

  • PDF

A Secure on the Design Model of the Payment System on Bluetooth (블루투스를 이용한 안전한 지불 시스템 모델에 관한 연구)

  • Seo Dae-Hee;Kang Se-ll;Leem Im-Yeong;Park Hea-Ryong
    • Journal of Korea Multimedia Society
    • /
    • v.7 no.11
    • /
    • pp.1610-1619
    • /
    • 2004
  • While researches and studies on short distance wireless communications have been actively carried out, studies on many applications of short distance wireless communications focusing on user-oriented Mobile device are also in progress. Since Bluetooth has several advantages that existing short distance communication does not have, studies on standardization have been carried out focusing on SIG, and IEEE has also jointly studied on this. Bluetooth is a short distance wireless communication technology that can be usefully applied to various kinds of applications. In this regard, this thesis presents payment system using Bluetooth, out of several application technologies of Bluetooth. This payment system is based on the scenario in which secure piconet is formed focusing on the user, the user gets in the car, fill up the gas at the gas station using his own Mobile device and pay The secure payment system presented in this thesis is designed to complement the weakness of existing Bluetooth in terms of security and to secure several requirements of security required for payment using short distance wireless communication.

  • PDF

Interference Analysis based on the Monte-Carlo Method (Monte-Carlo 기반의 간섭분석에 관한 연구)

  • Kim, Seong-Kweon
    • The Journal of the Korea institute of electronic communication sciences
    • /
    • v.3 no.2
    • /
    • pp.58-64
    • /
    • 2008
  • In this paper, we proposed the methodology of interference analysis based on monte-carlo method for effective use of Industrial, Scientific, Medical (ISM) band. The interference scenario is divided according to the distance and density. The simulation of interference analysis evaluates the interference probability according to distribution density of Interfering Transmitters (It) in the Secure Interference Area (SIA). The SIA is gained from the Interference Efficiency Range that satisfied to Interference Permissible Range of Victim Receiver (Vr). Simulation result that apply the proposed interference scenario to the WLAN and bluetooth, Interference Permissible Range was 60~400m. And the WLAN was acceptable within interference permissible range to six bluetooth that exist in the SIA. In the same condition, when applied Listen Before Talk (LBT) based on Cognitive Radio (CR) to the bluetooth using Frequency Hopping (FH), interference probability was decreased sharply. The Spectrum Engineering Advanced Monte Carlo Analysis Tool (SEAMCAT) that has been developed based on the monte-carlo method by European Radio-communications Office (ERO) were used to the interference simulation.

  • PDF