Combined decoding and flexible transform designs for effective H.264/AVC decoders

Yi Chih Chao, Shih Tse Wei, Jar Ferr Yang, Bin Da Liu

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


In this paper, we propose combined decoding architecture and high-throughput flexible transform design to effectively decode the residual data for H.264/AVC decoders. The inverse quantization (IQ) procedure is combined with context-based adaptive variable length coding (CAVLC) decoder to efficiently achieve the simplification. Besides, the flexible transform architecture is also proposed for effective computation of all transforms needed in H.264/AVC decoders. Since all the transforms are realized in the same architecture, the flexible transform design with the throughput of 8 pixels/sec needs fewer logic gate counts. Simulation results show that the implemented gate count is 18.6k and the maximum operating frequency is 125 MHz. For real-time requirements, this proposed design achieves 4VGA (1280×960)@30 frames/sec in the worst case.

Original languageEnglish
Article number4253343
Pages (from-to)3135-3138
Number of pages4
JournalProceedings - IEEE International Symposium on Circuits and Systems
Publication statusPublished - 2007 Jan 1
Event2007 IEEE International Symposium on Circuits and Systems, ISCAS 2007 - New Orleans, LA, United States
Duration: 2007 May 272007 May 30

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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