• Title/Summary/Keyword: Linux Device Driver

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Designing a Embedded System for Remote Control of LDM (LDM 원격 제어를 위한 임베디드 시스템 구성)

  • Moon Cheol-Hong;Kang Sang-Woo
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.42 no.8 s.338
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    • pp.27-34
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    • 2005
  • In this paper, FPGA It/w and S/W Embedded system for LDM remote control is implemented. XScale CPU is used on developed system and in communcation ethenet and serial is used. CPU interface with H/W LDM rotation and to drive LDM FPGA logic is implemented, to transmit LDM data from long distance command packet is composed, for S/W Embedded linux is used to design linux device driver and linux application program. This S/W is run by module so by loading this module to linu)( file system it can do any movement. Also by compiling Embedded linux to the system it can lower the price of the system. By using this H/W and S/W theory it can be used on any other embedded system.

Design of the Kernel Hardening in USB Driver for Linux DLM Function (리눅스 운영체제에서 DLM을 이용한 USB 디바이스 커널 하드닝 설계)

  • Jang, Seung-Ju
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.13 no.12
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    • pp.2579-2585
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    • 2009
  • It is an important problem without system breaking. Like this, to make a computer system operate normally, various commercial fault tolerant techniques are used. Almost commercial products of fault tolerant system consume much cost. This paper proposes kernel hardening technique that are reducing panic using DLM modue in Linux USB driver. I experimented the design technique in Linux O.S. By the experiment, the suggesting technique which includes USB module with DLMis working well.

A Study on the Development of Hard Disk Recoder and Remote Control Using Embedded Linux (임베디드 리눅스를 이용한 하드디스크 레코더 및 원격 제어 구현에 관한 연구)

  • Park, Seung-Ho;Lee, Jong-Su
    • Proceedings of the KIEE Conference
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    • 2004.07d
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    • pp.2429-2431
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    • 2004
  • In this paper, we have designed a remote controlable HDR System using all embedded linux board. The system is composed of three parts - a HDR System, a PC client program for remote control and a Nameserver for registering and aquisition of the IP address. The system is built in an embedded board using a linux kernel. With the Linux the system can support networking and file system for a hard disk management In addition, the system embeds a web-server and a ftp-server for remote manipulation and file transfer. And the hardwares of the system are controlled by the linux device driver mechanism. MPEG1/2 technique is used to compress TV tuner signal and external analog video/audio signal. And compressed data is stored in a hard disk. The data stored in the system is accesable through lan or internet. And RTP protocol is used to enable the system to service live stream of instant video/audio input.

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Embedded Linux System Design for web server and study of embodiment (웹 서버를 위한 Embedded Linux 시스템 설계 및 구현에 관한 연구)

  • 최병윤;고성찬
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2003.10a
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    • pp.137-140
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    • 2003
  • 대부분의 기존 임베디드 웹 서버 시스템은 어떤 특정 기기를 제어하기 위하여 고안되고 있다. 본 논문에서는 StrongArm 계열의 SA1110 chip을 채택하여 H/W 보드를 설계하고 최적의 웹 서버를 만들었다. 최근 널리 사용되고 있는 SA1110 H/W 보드 설계 중 Ethernet Controller인 CS8900A 설계에 관한 세부 사항들과 Ethernet 관련 Kernel patch에 대한 내용을 다루었다. 그리고 CS8900A에 대한 Network device driver 모듈에 대하여 자세히 언급하며, 제작된 보드를 사용하여 웹 서버 프로그램을 작성하여 MS 익스플로러 6.0환경에서 실험하였다.

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The Implementation of uClinux Device Driver of Nios II Embedded Processor System for Multimedia Application (멀티미디어 응용을 위한 Nios II 임베디드 프로세서 시스템의 uClinux 디바이스 드라이버 구현)

  • Kim, Dong-Jin;Park, Young-Seak
    • Journal of the Institute of Convergence Signal Processing
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    • v.10 no.4
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    • pp.245-255
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    • 2009
  • Recently, embedded processor systems have been widely used in the field of information communication devices and increased its use range and influence. The embedded systems are offered variety of functions, and its operating systems have been developed to make them easy to repair and maintain. Especially embedded linux is very cheap and provide a lot of equipment drivers. Also we can set up our own system because the source code is opened. In this paper, we describe the implementation of Touch panel and TFT-LCD device driver that are widely used for multimedia application. We designed the system hardware by using Altera Nios II embedded system. And we implemented the device drivers of frame buffer, touch panel and i2s based on uClinux for multimedia application, and tested actual operations of the integrated system.

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A Study for photonic-sensor drive based on SOPC (SOPC기반 광-센서 구동에 관한 연구)

  • Son, Hong-Bum;Park, Seong-Mo
    • Proceedings of the IEEK Conference
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    • 2006.06a
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    • pp.747-748
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    • 2006
  • In this paper, we describe photonic sensor interface and driver program based on SOPC(System on a programmable chip) platform. This platform uses device that has ARM922T processor and APEX FPGA area on a chip. As for driver program development, three different methods are tried such as simple firmware, real-time OS based program and embedded Linux based program, and results are compared for SoC implementation.

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LRF-Based Servo System for a Manipulator Grasping Moving Cylinders (움직이는 원통형 물체를 잡는 매니퓰레이터를 위한 레이저 거리계 기반의 서보시스템)

  • Cheon, Hong-Seok;Kim, Byung-Kook
    • Journal of Institute of Control, Robotics and Systems
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    • v.14 no.3
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    • pp.263-272
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    • 2008
  • We implemented a real-time servo system for a manipulator based on Laser Range Finder (LRF). and established algorithms for grasping a moving cylinder. We devised a manipulator mechanism and driving hardware based on a system board equipped with Xscale Processor with real-time operating system RTAI on Linux. The manipulator motor driver is connected to the system board via CAN communication link, and LRF is connected via RS-232C. We implemented real-time software including CAN device driver, RS-232C device driver, manipulator trajectory generator, and LRF control software. A typical application experiment for grasping a cylinder with circle motion demonstrated our system's real-time performance.

The Implementation of User Image Recognition based on Embedded Linux (임베디드 리눅스 기반의 사용자 영상인식시스템 구현)

  • Park, Chang-Hee;Kang, Jin-Suk;Ko, Suk-Man;Kim, Jang-Hyung
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.11 no.2
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    • pp.239-247
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    • 2007
  • In this paper, we propose a system that the Linux is ported in embedded system with peripheral devices of CIS(CMOS Image Sensor) and GPS module. The system acquires GGA sentence from GPS module by recognizing camera and GPS is used module in Linux kernel. And then the received location information is used to include still image acquired through CIS According to this paper, We compose hardware for embedded system, attach board (including camera), port Linux BootLoader and Kernel. And. then we realize that it insert kernel in CIS control device driver and GPS module device driver.

Implementation of Dual-Kernel based Control System and Evaluation of Real-time Control Performance for Intelligent Robots (지능형 로봇을 위한 이중 커널 구조의 제어 시스템 구현 및 실시간 제어 성능 분석)

  • Park, Jeong-Ho;Yi, Soo-Yeong;Choi, Byoung-Wook
    • Journal of Institute of Control, Robotics and Systems
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    • v.14 no.11
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    • pp.1117-1123
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    • 2008
  • This paper implements dual-kernel system using standard Linux and real-time embedded Linux for the real-time control of intelligent robot systems. Such system provides more useful services including standard Linux thread that is easy to implement complicated tasks and real-time tasks for the deterministic response to velocity control. Here, an open source real-time embedded Linux, XENOMAI, is ported on embedded target board. And for interfacing with motor controller we adopted a real-time serial device driver. The real-time task was implemented with a priority to keep the cyclic control command for trajectory control. In order to validate deterministic response of the proposed system, the performance measurement of the delay in performing trajectory control with feedback loop is evaluated with non real-time standard Linux. The proposed software architecture is anticipated to take advantage of features in both standard Linux and real-time operating systems for the intelligent robot systems.