• Proceedings of the Korea Contents Association Conference
• /
• 2011.05a
• /
• pp.411-412
• /
• 2011

6축 모션시뮬레이터를 기반으로 빔 프로젝터 2대를 이용하여 3D환경을 구축하고, 6축 모션시뮬레이터에 게임용 핸들과 페달을 장착하여 입력된 신호를 PC와 PCI8134, 8132 모션카드, 제어판을 통해 제어, 분배하여 사용자의 요구에 따라 6축 모션시뮬레이터의 움직임을 표현하는 3D레이싱게임콘텐츠를 위한 인터페이스 개발을 제안한다.

• Proceedings of the KIEE Conference
• /
• 2006.07d
• /
• pp.2045-2046
• /
• 2006

본 논문에서는 고속의 멀티미디어 Streaming data를 처리하기 위한 DSP 기반의 플랫폼을 설계하였다. 개발한 하드웨어는 오디오/비디오 데이터를 처리하는데 있어서 유연성과 확장성을 부여하기위하여 DSP를 사용하였으며 기존의 DSP플랫폼과 다르게 PC에 의존하지않는 독립적인 H/W를 만들기 위하여 ARM Processor를 사용하였다. 이는 저해상도, 저비트율의 오디오/비디오가 분리된 형태의 플랫폼이아닌 DSP기반의 독립적인 유연 플랫폼 구조를 통하여 고속, 고해상도를 가능하게 한다. LAN을 통하여 전송받은 Streaming data는 PCI Interface를 이용하여 DSP로 전달되며 디코딩되어 출력된다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2007.05a
• /
• pp.931-934
• /
• 2007

멀티미디어 디스플레이 시장현황과 성장추이를 보면 현재 멀티미디어 디스플레이는 '진화 중'이라는 표현이 적당할 것으로 보인다. 다양한 종류의 시스템을 인식시키기 위한 호환성이 개선됐고 네트워크 기능 까지 추가 되는 등 계속해서 여러 가지 기술이 응집되고 있다. 무선 랜은 랜 케이블이 없어도 되기 때문에 케이블 연결을 최소화해야 하는 멀티미디어 디스플레이에 필요한 요소이다. 본 논문에서는 IEEE 802.11g wireless mini pci를 탑재한 ARM계열 임베디드 장비에서 C/C++를 사용하여 보다 효율적이고 뛰어난 uClinux기반의 멀티미디어 디스플레이 무선 랜 네트워크 사용자 인터페이스의 구현에 대해서 논의 하고자 한다.

• 제어로봇시스템학회:학술대회논문집
• /
• 2005.06a
• /
• pp.575-579
• /
• 2005

In this paper, the development of an IMM(Injection Molding Machine) controller is discussed. Presently, the Mold Close and Open Control Method of a toggle-type IMM is open-loop control. Through the development, a PC based control system was built instead of an existing controller and a closed-loop control replaced the previous control method by using PC based PLC. To control the nonlinear system of toggle type clamping unit, a fuzzy PI control algorithm was selected and it was programmed by an IL(Instruction List) and a LD(Ladder Diagram) on a PC based PLC. The application of fuzzy algorithm as the control method was also considered to change a control object like a mold replacement or an additional apparatus. For the development of an IMM controller, PC based PLC of PCI card type, distributed I/O modules with CANopen and Industrial PC and HMI (Human Machine Interface) software were used.

• Proceedings of the IEEK Conference
• /
• 2002.06b
• /
• pp.205-208
• /
• 2002

An existing ATM switch fabric uses VPI(Virtual Path Identifier) and VCI(Virtual Channel Identifier) information to route ATM cell. But AAL type 2 switch which efficiently processes delay-sensitive, low bit-rate data such as a voice routes the ATM cell by using CID(Channel Identification) field in addition to VPI and VCI. In this paper, we research the AAL type 2 switch that performs the process of CPS packet. The Receive unit extracts the CPS packet from the inputted ATM cell. The designed receive unit consists of input FIFO, r)( status table, CAM(Content Addressable Memory), new CID table and partial packet memory. Also the designed receive unit supports the PCI interface with host processor. The receive unit is implemented in Xilinx FPGA and operates at 72MHz.

• Proceedings of the IEEK Conference
• /
• 2002.07b
• /
• pp.951-954
• /
• 2002

This paper presents the implementation of hash functions for IPSEC chip. There is an increasing interest in high-speed cryptographic accelerators for IPSec applications such as VPNs (virtual private networks). Because diverse algorithms are used in Internet, various hash algorithms are required for IPSec chip. Therefore, we implemented SHA-1, HAS-160 and MD5 in one chip. These hash algorithms are designed to reduce the number of gates. SHA-1 module is combined with HAS-160 module. As the result, the required logic elements are reduced by 27%. These hash algorithms have been implemented using Altera's EP20K1000EBC652-3 with PCI bus interface.

• Proceedings of the IEEK Conference
• /
• 2003.07b
• /
• pp.871-874
• /
• 2003

본 논문에서는 디지털 데이터 내에 사용자의 정보나 저작권 정보를 나타내기 위해 삽입되는 워터마크를 추출할 때 원본 이미지나 개인 키를 필요로 하지 않는 Blind Watermarking 방법을 개선하였다. 기존의 워터마킹 방법에서는 워터마크를 추출하기 위해 원본 이미지를 사용하거나 원본 이미지를 사용하지 않는 경우에는 개인 키를 사용하여 워터마크를 추출하였다. 제안하는 워터마킹 알고리즘은 워터마크를 주파수 대역 별로 삽입하는 것으로써 수정된 DCT 계수를 기반으로 하였고, 삽입 및 추출 연산의 복잡성을 배제하여 속도가 빠르고 하드웨어의 구조가 간단하다. 또한, 워터마크를 저 주파수 대역과 고 주파수 대역에 삽입하여 압축 및 에러 환경에 강인한 성격을 가진다. 제안한 알고리즘의 FPGA와 PCI Interface 를 통한 구현 및 검증에 대해서도 논하였다.

• Proceedings of the KSR Conference
• /
• 2007.05a
• /
• pp.824-828
• /
• 2007

With increasing interest in the reduction of cost for operation and maintenance of overhead catenary system, various methods of condition monitoring have been developed and used in with high-speed analysis and advanced image processing techniques. This study utilizes a high-speed camera as inspecting system to measure the wear, stagger, hight and arc extinguishing test of overhead catenary system. All measuring image were captured by a high speed CMOS camera with PCI express output, which can acquire up to 1000 frames per second with the resolution 1024 × 1280 pixels. Line type laser source with a power equal to 300 mW and the National Instrument LabVIEW (8.0) based on vision acquisition software have been used in application programming interface for image acquisition, display, and storage. The proposed high-speed camera system is finally applied to measure the overhead catenary system showing promising on-field applications

• Proceedings of the KSR Conference
• /
• 2006.11b
• /
• pp.1483-1487
• /
• 2006

In electric railway, image monitoring using high speed camera provides reliable, timely information of wear and geometry status, important in taking decisions for overhead contact wire maintenance. The contribution of this research is the development of a simple real-time monitoring system for use in measurement subsystem of contact wire and geometry of overhead contact wire in electric railway. The system has been consists of a high speed CMOS camera with resolution $1024{\times}1280$ pixels, line type laser source and PC-based image acquisition system with PCI Express slot. Vision acquisition software have been used in application programming interface for image acquisition, display, and storage with a frequency of sampling of 500 acquisitions per second.

• The Transactions of the Korean Institute of Electrical Engineers D
• /
• v.52 no.8
• /
• pp.492-499
• /
• 2003

This paper presents the analysis and the implementation of the asynchronous communication portion of the IEEE 802.11 MAC protocol. We have used PRISM2 chipsets from INTERSIL to build baseband, IF, and RF parts and PCI controller from PLX to interface LLC Layer. We have implemented DCF(Distributed Coordination Function) service using CSMA/CA(Carrier Sense Multiple Access with Collision Acoidance) with backoff algorithm and RTS/CTS protocol. Also, we have implemented TSF(Timing Synchronization Function) which can be used for power management frequency hop synchronization, and other management function. This study can be used as a reference for the MAC protocol implementation and MAC controller design in very high speed wireless LAN which complies with the IEEE 802.11 standard.