한국컴퓨터정보학회논문지 (Journal of the Korea Society of Computer and Information)

  • 제19권4호
  • /
  • Pages.35-41
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  • 2014
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  • 1598-849X(pISSN)
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  • 2383-9945(eISSN)
한국컴퓨터정보학회 (Korean Society of Computer Information)
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RTOS 기반의 소프트웨어 2D BitBLT 엔진의 설계

A design of Software 2D BitBLT Engine based on RTOS

  • Kim, Bong-Joo (Department of Computer Science and Engineering, Soongsil University) ;
  • Hong, Jiman (Department of Computer Science and Engineering, Soongsil University)
  • 투고 : 2014.02.10
  • 심사 : 2014.03.20
  • 발행 : 2014.04.30
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초록

본 논문은 소프트웨어 기반의 2D BitBLT 엔진을 pSOS 운영체제에서 구현하는 것을 제안하였으며, 제안된 BitBLT엔진을 환자감시장치에서 동작을 검증하였다. 본 논문에서 제안한 방법의 검증을 위해, 환자감시장치 보드를 기반으로 하는 별도의 프로토 타입 PCB 보드를 제작하고, 동작을 검증하였다. 메인 보드는 ARM9 기반의 CPU로 설계하였으며, 하드웨어 기반의 BitBLT 모듈을 소프트웨어 기반의 모듈로 동작하면서 가중되는 CPU의 부하문제의 해결을 위해 200Mhz 프로세서 대신 400Mhz 프로세서로 변경하였다. 본 논문에서는 환자감시장치에서 GUI를 구현하는데 있어 그래픽 콘트롤러의 핵심요소 중의 하나인 2D BitBLT 모듈을 커널의 디바이스 드라이버로 구현하였다.

In this paper, we proposed the implementation of software-based 2D BitBLT engine on the pSOS operating system and the operation of the BitBLT engine on patient monitoring device was verified. To verify the proposed method on the patient monitoring device, we designed prototype PCB board, and verified the operation. We designed the motherboard by using ARM9-based CPU. Because hardware-based BitBLT module was replaced with software-based one, CPU load problem was weighted. To solve this problem, w changed 400Mhz processor instead of 200Mhz processor. We implemented 2D BitBLT kernel module as a device driver which is one of the key elements of a graphics controller GUI in patient monitoring device.

키워드

참고문헌

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