• Title/Summary/Keyword: 어레이 합성기법

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Design and synthesis of reed-solomon encoder and decoder using modified euclid's algorithm (수정된 유클리드 알고리듬을 적용한 리드솔로몬 부호기 및 복호기의 설계 및 합성)

  • 이상설;송문규
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.23 no.6
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    • pp.1575-1582
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    • 1998
  • Reed-Solomon(RS) code which is especially effective against burst error is studied as a forward error correction technique in this ppaer. The circuits of RS encoder and decoder for ASIC implementation are designed and presented employing modified Euclid's algorithm. The functionalities of the designed circuits are verified though C programs which simulates the circuits over the various errors and erasures. The pipelined circuits using systolic arrays are designed for ASIC realization in VHDL, and verified through the logic simulations. Finally the circuit synthesis of RS encoder and decoder can be achieved.

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Full-Search Block-Matching Motion Estimation Circuit with Hybrid Architecture for MPEG-4 Encoder (하이브리드 구조를 갖는 MPEG-4 인코더용 전역 탐색 블록 정합 움직임 추정 회로)

  • Shim, Jae-Oh;Lee, Seon-Young;Cho, Kyeong-Soon
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.46 no.2
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    • pp.85-92
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    • 2009
  • This paper proposes a full-search block-matching motion estimation circuit with hybrid architecture combining systolic arrays and adder trees for an MPEG-4 encoder. The proposed circuit uses systolic arrays for motion estimation with a small number of clock cycles and adder trees to reduce required circuit resources. The interpolation circuit for 1/2 pixel motion estimation consists of six adders, four subtracters and ten registers. We improved the circuit performance by resource sharing and efficient scheduling techniques. We described the motion estimation circuit for integer and 1/2 pixels at RTL in Verilog HDL. The logic-level circuit synthesized by using 130nm standard cell library contains 218,257 gates and can process 94 D1($720{\times}480$) image frames per second.

Studies on the Patterning of Polyimide LB Film and Its Application for Bioelectronic Device (폴리이미드 LB 필름을 이용한 패터닝 및 생물전자 소자로의 응용에 관한 연구)

  • 오세용;박준규;정찬문;최정우
    • Polymer(Korea)
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    • v.26 no.5
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    • pp.634-643
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    • 2002
  • Ultrathin film of polyamic acid having benzene and sulfonyloxyimide moieties was prepared using the Langmuir-Blodgett (LB) technique, and then photosensitive polyimide LB film was obtained by the thermal treatment of precursor polyamic acid multilayers at 200$\^{C}$ for 1 hr. The polyamic acid was synthesized by condensation polymerization under THF and pyridine cosolvent. All monomers and polymers were identified through elemental analysis, FT-IR and $^1$H-NMR spectroscopic measurements. The microarray patterning of photosensitive polyimide LB film on a gold substrate was generated with a deep UV lithography technique. The well-characterized monolayer of cytochrome c was immobilized on the microarray patterns using two different self-assembly processes. Physical and electrochemical properties of the self-assembled cytochrome c monolayer were investigated based on cyclic voltammetry and atomic force microscopy (AFM). Also, its application in bioelectronic device was examined.