Journal of the Institute of Electronics Engineers of Korea SP (대한전자공학회논문지SP)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Study for The Parallel Processing in The Polyphase Encoder

Polyphase 인코더의 병렬 처리에 대한 연구

  • Received : 2010.01.20
  • Published : 2010.09.25
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Abstract

In this paper, we proposed a polyphase encoder that consists of multiple internal encoders. The multiple internal encoders were configured in parallel. Successive frames of image were distributed to separate encoders by way of a image divider and processed in parallel. In this way, the sampling rate of the encoder was reduced by the factor of number of encoders in parallel. In our design, however, the PSNR is exactly the same as that to be achieved with the conventional single-phase encoder, which should require a much higher sampling rate.

본 연구에서는 대용량의 영상 데이터를 압축할 수 있는 polyphase 인코더를 제안한다. polyphase 인코더는 병렬로 작동하는 다수의 내부 인코더로 구성되어 있으며 입력되는 영상 데이터를 분배기에 의해 내부 인코더로 분배한 후 각각의 내부 인코더가 분배된 비디오 신호를 병렬로 압축하는 구조로 되어있다. 이 구조는 내부 인코더의 샘플링 속도를 감소시켜서 대용량의 영상 데이터를 처리할 수 있지만 PSNR이 감소하고 참조 프레임을 전송해야하는 단점을 갖는다. 본 연구에서는 polyphase 인코더의 PSNR이 감소하는 원인을 분석하였고 그 해결 방법과 참조 프레임 전송을 감소시키는 방법을 제시하였으며 시뮬레이션을 통해 polyphase 인코더가 기존의 단일 인코더와 동일한 PSNR을 발생시킴을 보였다.

Keywords

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