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[Author] Somsak CHOOMCHUAY(2hit)

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  • An Analysis of Time Domain Reed Solomon Decoder with FPGA Implementation

    Kentaro KATO  Somsak CHOOMCHUAY  

     
    PAPER-Computer System

      Pubricized:
    2017/08/23
      Vol:
    E100-D No:12
      Page(s):
    2953-2961

    This paper analyzes the time domain Reed Solomon Decoder with FPGA implementation. Data throughput and area is carefully evaluated compared with typical frequency domain Reed Solomon Decoder. In this analysis, three hardware architecture to enhance the data throughput, namely, the pipelined architecture, the parallel architecture, and the truncated arrays, is evaluated, too. The evaluation reveals that the number of the consumed resources of RS(255, 239) is about 20% smaller than those of the frequency domain decoder although data throughput is less than 10% of the frequency domain decoder. The number of the consumed resources of the pipelined architecture is 28% smaller than that of the parallel architecture when data throughput is same. It is because the pipeline architecture requires less extra logics than the parallel architecture. To get higher data throughput, the pipelined architecture is better than the parallel architecture from the viewpoint of consumed resources.

  • New Bias Voltage Generators for TFT-LCD's Drivers

    Manabu HIRATA  Yasoji SUZUKI  Masahiro YOSHIDA  Yutaka ARAYASHIKI  Mitsuo TERAMOTO  Somsak CHOOMCHUAY  

     
    PAPER

      Vol:
    E83-C No:10
      Page(s):
    1579-1583

    New positive and negative bias voltage generators for TFT-LCD's drivers utilizing charge pump circuits are introduced. The generators can generate positive or negative voltages with various amplitude by simply changing the number of pumping stages. By using the circuit simulation program HSPICE, it is demonstrated that the introduced generators can provide enough positive or negative voltages for TFT-LCD's drivers.