전자공학회논문지C (Journal of the Korean Institute of Telematics and Electronics C)
- 제35C권5호
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- Pages.25-32
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- 1998
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- 1226-5853(pISSN)
데이터패스를 이용한 SA-DCT 구현
Implementation of SA-DCT using a datapath
초록
In this paper, SA (shape adaptive)-DCT is implemented using a datapath with 4 MACs (multiplication & accumulator). DCT is a well-known bottleneck of real-time video compression using MPEG-like schemes. High-speed pipelined MACs presented here implement real-time DCT. A datapath in this paper executes DCT/IDCT algorithms for QCIF 15fps(frame per second), maximum rate of VLBV(very low bitrte video) in MPEG-4. A 32bit accumulator in a MAC prevents distortion caused by fixed-point process. It can be applied to various operations such as ME (motion estimation) and MC(motion compensation) with a absolutor and a halfer.
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