Design of application specific processor for H.264 inverse transform and quantization

Abstract

This paper proposes a new application specific processor and compiler targeting H.264 inverse transform and inverse quantization. They are based on the 6-stage pipelined dual issue VLIW+SIMD architecture, efficient instructions for inverse transform and inverse quantization, and compiler mapping techniques such as CKF (compiler known function), inline assembly and CGD (code generator description). The proposed architecture whose approximate gate count is about 130 K runs at 100 MHz. Compared to the ARM1020E processor, the proposed architecture and compiler result in about 20~46% improvement in terms of total cycles as well as smaller hardware complexity.