• Title/Summary/Keyword: Pipeline Structure

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A study on the Image Edge Enhancement Detection of the Hybrid FCNN using the Morphological Operations (형태학 연산자를 이용한 하이브리드 FCNN의 영상 에지 고양 검출에 관한 연구)

  • 홍연희;변오성;조수형;문성룡
    • Proceedings of the IEEK Conference
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    • 1999.06a
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    • pp.1025-1028
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    • 1999
  • After detecting the edge which is applying the morphological operators to the hybrid FCNN, we could analyze and compare. The hybrid FCNN is completely removed to the noise in the image, and worked in order to obtain the result image which is closest to the original image. Also, the morphological operator is applied to the image as the method in order to detect more good the edge than the conventional edge. FCNN which is the pipeline type is completely suitable to detecting the image processing as well as the hardware size. In this paper. we would make the structure elements of the morphological operator the variable template and the static template, and compare with the edge enhancement of two images. After being the result which is applying the variable template morphological operator and the static template morphological operator to the image, we could know that the edge images applying the variable template is superior in a edge enhancement side.

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17$\times$17-b Multiplier for 32-bit RISC/DSP Processors (32 비트 RISC/DSP 프로세서를 위한 17 비트 $\times$ 17 비트 곱셈기의 설계)

  • 박종환;문상국;홍종욱;문병인;이용석
    • Proceedings of the IEEK Conference
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    • 1999.06a
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    • pp.914-917
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    • 1999
  • The paper describes a 17 $\times$ 17-b multiplier using the Radix-4 Booth’s algorithm. which is suitable for 32-bit RISC/DSP microprocessors. To minimize design area and achieve improved speed, a 2-stage pipeline structure is adopted to achieve high clock frequency. Each part of circuit is modeled and optimized at the transistor level, verification of functionality and timing is performed using HSPICE simulations. After modeling and validating the circuit at transistor level, we lay it out in a 0.35 ${\mu}{\textrm}{m}$ 1-poly 4-metal CMOS technology and perform LVS test to compare the layout with the schematic. The simulation results show that maximum frequency is 330MHz under worst operating conditions at 55$^{\circ}C$ , 3V, The post simulation after layout results shows 187MHz under worst case conditions. It contains 9, 115 transistors and the area of layout is 0.72mm by 0.97mm.

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A Study on the 32 bit RISC/DSP Microprocessor Appropriate for Embedded Systems (내장형 시스템에 적합한 32 비트 RISC/DSP 마이크로프로세서에 관한 연구)

  • 유동열;문병인;홍종욱;이태영;이용석
    • Proceedings of the IEEK Conference
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    • 1999.06a
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    • pp.257-260
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    • 1999
  • We have designed a 32-bit RISC microprocessor with 16/32-bit fixed-point DSP functionality. This processor, called YRD-5, combines both general-purpose microprocessor and digital signal processor (DSP) functionality using the reduced instruction set computer (RISC) design principles. It has functional units for arithmetic operation, digital signal processing (DSP) and memory access. They operate in parallel in order to remove stall cycles after DSP and load/store instructions with one or more issue latency cycles. High performance was achieved with these parallel functional units while adopting a sophisticated 5-stage pipeline structure and an improved DSP unit.

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AzTEC Submillimeter Survey of Galaxies

  • Kim, Ki-Hun;Kim, Sung-Eun;AzTEC team, AzTEC team
    • The Bulletin of The Korean Astronomical Society
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    • v.35 no.2
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    • pp.38.1-38.1
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    • 2010
  • We present the results of the survey for submillimeter galaxies in the MS0451 (04h 54m 10.8s, -03d 00m 57.0s) at z = 0.55 and PKS1138-262 (11h 40m 48.25s, -26d 29m 10.1s) at z = 2.16 with the 1.1mm bolometer array AzTEC at the James Clerk Maxwell Telescope. The samples were centered on a prominent large-scale structure overdensity. Submillimeter galaxies seem to be starburst galaxies at high redshift ($z\;\geq\;1$) with high starformation rates ($\sim1000M\odot\;yr^{-1}$) or active galactic nuclei (AGN). We have obtained AzTEC images using the AzTEC data reduction pipeline with the IDL language. Through a bayes' theorem, we determined the extragalaxy catalogue, containing the false-detection rate, completeness, flux deboosting correction, and the source positional uncertainty in this region. We compared the catalogue with HST, DSS, 2MASS observations.

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1V-2.7ns 32b self-timed parallel carry look-ahead adder with wave pipeline dclock control (웨이브 파이프라인 클럭 제어에 의한 1V-2.7ns 32비트 자체동기방식 병렬처리 덧셈기의 설계)

  • 임정식;조제영;손일헌
    • Journal of the Korean Institute of Telematics and Electronics C
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    • v.35C no.7
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    • pp.37-45
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    • 1998
  • A 32-b self-timed parallel carry look-ahead adder (PCLA) designed for 0.5.mum. single threshold low power CMOS technology is demonstrated to operate with 2.7nsec delay at 8mW under 1V power supply. Compared to static PCLA and DPL adder, the self-timed PCLA designed with NORA logic provides the best performance at the power consumption comparable to other adder structures. The wave pipelined clock control play a crucial role in achieving the low power, high performance of this adder by eliminating the unnecessary power consumption due to the short-circuit current during the precharge phase. Th enoise margin has been improved by adopting the physical design of staic CMOS logic structure with controlled transistor sizes.

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EISC pipelineing optimizations for processor speed improvements (EISC processor의 속도 향상을 위한 pipelineing 최적화)

  • Son, Mu-Chang;Kim, In-Soo;Min, Hyoung-Bok;Lee, Young-Geol
    • Proceedings of the KIEE Conference
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    • 2008.07a
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    • pp.2275-2276
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    • 2008
  • Currently the quarter prediction giga it is used SE3208 from EISC ISA [1]] where it does in base. But the prediction which is perfect is difficult improved Pipeline structures and PC the structure which is not Delay to add it decided. Even PC and IF/ID blocks, the area and expense were added, but Bubble without it will be able to control Conditional Branch doors and the possibility of decreasing a help in processor performance improvements.

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Motion Estimation and Compensation based on Advanced DCT (변환 영역에서 개선된 DCT를 기반으로 한 움직임 예측 및 보상)

  • Jang, Young;Cho, Hyo-Moon;Cho, Sang-Bock
    • Proceedings of the KIEE Conference
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    • 2007.04a
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    • pp.38-40
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    • 2007
  • In this paper, we propose a novel architecture, which is based on DCT (Discrete Cosine Transform), for ME (Motion Estimation) and MC (Motion Compensation). The traditional algorithms of ME and MC based on DCT did not suffer the advantage of the coarseness of the 2-dimensional DCT (2-D DCT) coefficients to reduce the operational time. Therefore, we derive a recursion equation for transform-domain ME and MC and design the structure by using highly regular, parallel, and pipeline processing elements. The main difference with others is removing the IDCT block by using to transform domain. Therefore, the performance of our algorithm is more efficient in practical image processing such as DVR (Digital Video Recorder) system. We present the simulation result which is compare with the spatial domain methods. it shows reducing the calculation cost. compression ratio. and peak signal to noise ratio (PSNR).

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An Implementation of High Speed Rendering to Process Touch Screen Multiple Inputs based on FPGA (FPGA 기반의 터치스크린 다중입력처리를 위한 고속 렌더링 구현)

  • Yoon, Junhan;Kim, Jin Heon
    • Journal of Korea Multimedia Society
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    • v.20 no.11
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    • pp.1803-1810
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    • 2017
  • A large amount of processing time is required if the process of detecting the touch position on the touch screen and displaying it on the display panel is performed only by software. In this paper, we propose a method to output information touched on the screen using H/W method in order to improve the response speed delay. In the FPGA module designed for the HDMI signal output to the display module, the touch information is input to the serial data signal including touch coordinate information, point size, and color information. Then the module render the image using HDMI signal input to the module and the touch information. This method has a pipeline structure so it has effect of reducing the delay time that occurs in outputting the touch information compared with the conventional software processing method.

The Design of FFT Processor for Power measurement using VHDL (VHDL을 이용한 전력 계측용 FFT processor 설계)

  • Lee Jeong-Bok;Park Hae-Won;Kim Soo-Gon;Jeon Hee-Jong
    • Proceedings of the KIPE Conference
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    • 2002.07a
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    • pp.657-660
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    • 2002
  • In this paper, the FFT processor for power measurement using VHDL (Very high-speed integrated circuit Hardware Description Language) is discussed. The proposed system relies on the FFT algorithm to compute real and reactive power. The advantage of system is that harmonic analysis is carried out on a period of the Input signal. The proposed system is based on FFT Processor which is designed using VHDL. In the design of FFT processor, $radix-2^2$ is adopted to reduce several complex multipliers for twiddle factor. And this processor adopt pipeline structure. Therefore, the system Is able to have both high hardware efficiency and high performance.

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SSR-Primer Generator: A Tool for Finding Simple Sequence Repeats and Designing SSR-Primers

  • Hong, Chang-Pyo;Choi, Su-Ryun;Lim, Yong-Pyo
    • Genomics & Informatics
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    • v.9 no.4
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    • pp.189-193
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    • 2011
  • Simple sequence repeats (SSRs) are ubiquitous short tandem duplications found within eukaryotic genomes. Their length variability and abundance throughout the genome has led them to be widely used as molecular markers for crop-breeding programs, facilitating the use of marker-assisted selection as well as estimation of genetic population structure. Here, we report a software application, "SSR-Primer Generator " for SSR discovery, SSR-primer design, and homology-based search of in silico amplicons from a DNA sequence dataset. On submission of multiple FASTA-format DNA sequences, those analyses are batch processed in a Java runtime environment (JRE) platform, in a pipeline, and the resulting data are visualized in HTML tabular format. This application will be a useful tool for reducing the time and costs associated with the development and application of SSR markers.