• Proceedings of the KIEE Conference
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• 2001.07d
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• pp.2732-2734
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• 2001

본 연구에서는 리눅스를 임베디드 시스템에 포팅하기 위한 기술을 조사하고 하드웨어를 선정하여 리눅스를 포팅하였다. 하드웨어는 Intel 사의 StrongARM SA-1110를 탑재한 Evaluation board를 사용하였다. 개발 환경은 Host computer와 Assabet board상에 RS-232C를 이용하여 프로그램 다운로드할 수 있는 환경을 구축하였다. StrongARM를 위한 Cross Compiler를 만들고, StrongARM의 하드웨어 메모리 맵을 이용하여 Linux의 메모리 맵을 설정한 후 리눅스를 컴파일하였다. 이를 RS-232C를 통해 Assabet board에 다운로드하여 리눅스를 탑재한 임베디스 시스템을 구현하였다. UCB1300 telecom codec의 device driver를 개발하여 커널에 적재하고 이를 사용하여 전화기로부터 들어오는 신호중 CID 신호를 해석하여 발신자 번호를 출력하는 시스템을 구현하였다.

• Journal of Institute of Control, Robotics and Systems
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• v.15 no.4
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• pp.420-425
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• 2009

In this paper, image detection and recognition algorithms are studied with respect to embedded carrier system. There are many suggested techniques to detect and recognize objects. But they have the propensity to need much calculation for high hit rate. Advanced and modified method needs to study for embedded systems that low power consumption and real time response are requested. The proposed methods were implemented using Intel(R) Open Source Computer Vision Library provided by Intel Corporation. And they run and tested on embedded system using a ARM920T processor by cross-compiling. They showed 1.6sec response time and 95% hit rate and supported the automated moving carrier system smoothly.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.47 no.7
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• pp.52-60
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• 2010

In this paper, we propose a dynamic power management framework for multi-core systems. We reduced the power consumption of multi-core processors such as Intel Centrino Duo and ARM11 MPCore, which have been used at the consumer electronics and personal computer market. Each processor uses a different technique to save its power usage, but there is no embedded multi-core processor which has a precise power control mechanism such as dynamic voltage scaling technique. The proposed dynamic power management framework is suitable for smart phones which have an operating system to provide multi-processing capability. Basically, our framework follows an intuitive idea that reducing the power consumption of idle cores is the most effective way to save the overall power consumption of a multi-core processor. We could minimize the energy consumption used by idle cores with application-targeted policies that reflect the characteristics of active workloads. We defined some properties of an application to analyze the performance requirement in real time and automated the management process to verify the result quickly. We tested the proposed framework with popular processors such as Intel Centrino Duo and ARM11 MPCore, and were able to find that our framework dynamically reduced the power consumption of multi-core processors and satisfied the performance requirement of each program.

• Proceedings of the IEEK Conference
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• 2005.11a
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• pp.971-974
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• 2005

In this paper, we describe photonic sensor interface in SOPC(System on a programmable chip) platform. This platform uses device that has ARM922T processor and APEX FPGA area on a chip. We use two development kits. The one is embedded kit that using Intel's Xscale device, the another is SOPC kit that using Altera's Excalibur device. We implement some device logic that DMAC, ADCC, etc. and application.

• Proceedings of the Korea Information Processing Society Conference
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• 2019.05a
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• pp.168-169
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• 2019

Trusted Execution Environment(TEE), such as Intel SGX, AMD Secure Processor and ARM TrustZone, has recently been a rising issue. Trusted Execution Environment provides a secure and independent code execution, hardware-based, environment for untrusted OS. In this paper, we show that Trusted Execution Environment's research trends on its vulnerability and attack models. We classify the previous attack models, and summarize mitigations for each TEE environment.

• Journal of the Institute of Electronics Engineers of Korea SP
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• v.46 no.3
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• pp.119-124
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• 2009

In this paper, AMR-WB+ audio coder is implemented, in real-time, using Intel 400MHz Xscale PXA250 with 32bit RISC processor ARM9E-J(R)core. The assembly code for ARM9E-J(R)core is developed through the serial process of C code optimization, cross compile, assembly code manual optimization and adjusting the optimized code to Embedded Visual C++ platform. C code is trimmed on Visual C++ platform. Cross compile and assembly code manual optimization are performed on CodeWarrior with ARM compiler. Through these stages the code for both ARM EVM board and PDA is implemented. The average complexities of the code are 160.75MHz on encoder and 33.05MHz on decoder. In case of static link library(SLL), the required memories are 65.21Kbyte, 32.01Kbyte and 279.81Kbyte on encoder, decoder and common sources, respectively. The implemented coder is evaluated using 16 test vectors given by 3GPP to verify the bit-exactness of the coder.

• Journal of IKEEE
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• v.21 no.4
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• pp.358-367
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• 2017

Advanced Driver Assistance Systems(ADAS), such as Front Collision Warning System (FCWS) are currently being developed. FCWS require high processing speed because it must operate in real time while driving. In addition, a low-power system is required to operate in an automobile embedded system. In this paper, FCWS is implemented in CPU-FPGA architecture in embedded system to enable real-time processing. The lane detection enabled the use of the Inverse Transform Perspective (IPM) and sliding window methods to operate at fast speed. To detect the vehicle, a Convolutional Neural Network (CNN) with high recognition rate and accelerated by parallel processing in FPGA is used. The proposed architecture was verified using Intel FPGA Cyclone V SoC(System on Chip) with ARM-Core A9 which operates in low power and on-board FPGA. The performance of FCWS in HD resolution is 44FPS, which is real time, and energy efficiency is about 3.33 times higher than that of high performance PC enviroment.

• Proceedings of the Korean Society of Computer Information Conference
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• 2018.07a
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• pp.466-469
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• 2018

최근 PC를 비롯한 모바일, IOT 기기 등 다양한 환경에서의 사이버 공격이 기승을 부리고 있으며, 그 방법 또한 나날이 발전하고 있다. 이러한 사이버위협으로부터 개인 및 기업의 자산을 지키기 위한 근본적인 대안이 없이는 매번 반복적인 피해를 피하기 어려운 현실이다. 다양한 환경이라고 함은, 다양한 OS(Operation System), 다양한 ISA (Instruction Set Architecture)의 조합으로 이루어지는 사이버환경을 의미한다. 이러한 조합들은 일반 사용자들에게 가장 많이 쓰이는 Windows & Intel 조합의 환경과, Linux & Intel 또는 Linux & ARM 등 기업에서 서비스를 위해 쓰이는 서버 환경 등을 예로 들 수 있다. 그밖에 최근 IOT기기나 모바일 기기와 같은 환경도 있을 수 있다. 바이너리 파일에 대한 보안은 다양한 연구가 진행되고 있지만 그 범위가 방대하고, 깊이가 필요한 영역이라 진입 장벽이 높은 실정이다. 본 논문에서는 이러한 바이너리의 취약점을 분석하기 위한 첫 번째 단계로써 다양한 바이너리 파일을 하나의 정형화된 자료구조로 변환하는 바이너리 포맷 분석기의 한 방법을 제시하고자 한다. 다양한 OS와 다양한 ISA환경에서 사용되는 바이너리들에서 공통적으로 존재하는 정보들 중, 바이너리의 취약점 분석을 위해 필요한 데이터를 보다 효율적으로 수집하고, 관리하는 것이 바이너리를 통한 사이버 위협을 탐지하는 연구에서 기초가 된다고 할 수 있기 때문이다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• v.9 no.2
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• pp.557-560
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• 2005

The purpose of this study is to realize DHCP server based on embedded system. To achieve this, embedded Linux was ported in ez Bord-M01 mounted with Intel Strong ARM SA1110 processor, and ethernet-based network was constructed for network function. In this way, this study suggests embedded DHCP server where Window and Linux client hosts are dynamically configurated as network information by dynamically assigning network information in embedded board.

• Journal of the Korea Computer Industry Society
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• v.5 no.9
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• pp.959-964
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• 2004

This study will reilize the learning device of foreign languages using voice recognition that is programmed based on three scenarios by the Conversay SDK. This device is embedd not with basic functions such as pronunciation/phrase recognition function, conversation function etc., but also with additional functions using user's voices such as timer function, alarming function, test function, learning check function etc.