• The KIPS Transactions:PartD
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• v.11D no.1
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• pp.195-202
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• 2004

This paper describes the development of a window manager based on the real time operating system, Qplus-p, for small internet appliance. Current window managers for small internet appliance are originally developed for desktop environment and then modified for embedded systems. So they have inadequate functions for small internet appliances and do not perfectly support Hangul. The Qplus-P window manager adds the Hangul processing function to Matchbox window manager, a royalty-free window manager for small Internet appliance and provides a new Hangul input method called Amikey. Input mode can be changed automatically from Hangul mode to English mode and vice versa by Amikey. In addition, Qplus-P window manager provides Hangul supported basic applications such as web browser, e-mail client, MP3 player. We developed the window manager by porting open sources to target system after adding Hangul supported functions to them.

• Journal of Korea Society of Industrial Information Systems
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• v.14 no.5
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• pp.53-59
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• 2009

In this paper, we describe the problems which can happen during multi-tasking process in the Windows operating system (OS) environment. To cope with the problems, multiple-windows manager program is proposed in this paper. If we use the proposed multiple-windows manager program with three virtual screen, we can obtain the effect like using four Windows OS and thus we can improve the tardy speed and the high complexity for multi-tasking process.

• 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 the Korea Institute of Information and Communication Engineering
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• v.13 no.5
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• pp.1022-1029
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• 2009

What Ubiquitous means "being or existing anywhere, anytime"in Latin, which is, in other words, the users are able to access the network no matter where they are, what kind of network or computer terminals they use. This paper focuses on the implementation of hardware system. The first part of the sytem is the sensor node which transmits the sensor data from node to ARM11 platform through the Zigbee network wirelessly. The other part of the system is the ARM11 platform which receives and displays the sensor data. ARM11 platform is sink node. The ARM11 platform is based on ARM11 architecture and ported with Linux OS. Qtopia is used as Window Manager in order to make applications. The highly efficient ARM11 processor, S3C6400 MPC is the main part of the ARM11 platform.

• Journal of KIISE:Computing Practices and Letters
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• v.9 no.4
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• pp.393-409
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• 2003

In this paper, we present a multi-task debugging environment for Qplus-T embedded-system such as internet information appliances. We will propose the structure and functions of a remote multi-task debugging environment supporting environment effective ross-development. And, we are going enhance the communication architecture between the host and target system to provide more efficient cross-development environment. The remote development toolset called Q+Esto consists to several independent support tools: an interactive shell, a remote debugger, a resource monitor, a target manager and a debug agent. Excepting a debug agent, all these support tools reside on the host systems. Using the remote multi-task debugger on the host, the developer can spawn and debug tasks on the target run-time system. It can also be attached to already-running tasks spawned from the application or from interactive shell. Application code can be viewed as C/C++ source, or as assembly-level code. It incorporates a variety of display windows for source, registers, local/global variables, stack frame, memory, event traces and so on. The target manager implements common functions that are shared by Q+Esto tools, e.g., the host-target communication, object file loading, and management of target-resident host tool´s memory pool and target system´s symbol-table, and so on. These functions are called OPEn C APIs and they greatly improve the extensibility of the Q+Esto Toolset. The Q+Esto target manager is responsible for communicating between host and target system. Also, there exist a counterpart on the target system communicating with the host target manager, which is called debug agent. Debug agent is a daemon task on real-time operating systems in the target system. It gets debugging requests from the host tools including debugger via target manager, interprets the requests, executes them and sends the results to the host.