A design of Software 2D BitBLT Engine based on RTOS

김봉주; Jiman Hong

Journal of The Korea Society of Computer and Information

Abbr : JKSCI
2014, 19(4), pp.35-41
Publisher : The Korean Society Of Computer And Information
Research Area : Computer Science

김봉주 ¹, Jiman Hong ²

¹숭실대학교
²숭실대학교

ABSTRACT

In this paper, we proposed the implementation of software-based 2D BitBLT engine on thepSOS operating system and the operation of the BitBLT engine on patient monitoring device wasverified. To verify the proposed method on the patient monitoring device, we designed prototypePCB 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 problemwas 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 ofa graphics controller GUI in patient monitoring device.
KEYWORDS

BitBLT, LCD device driver, Raster operation (ROP), biosignal monitoring device
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