VLSI design to unify IDCT and IQ circuit for multistandard video decoder

We describe a design method to unify the IDCT and IQ operations for three popular video compression standards such as H.264 (up to high profile), MPEG-4 and VC-1. We use the concept of delta coefficient matrix to implement the unified IDCT circuit. Our circuit supports 4-point and 8-point IDCT's for H.264, MPEG-4 and VC-1. The unified IQ circuit uses a shared multiplier. The entire circuit was verified on the SoC platform board, synthesized into a gate-level circuit using 130 nm standard cell library and showed its efficiency in terms of the area.