Architecture Design of Low-power and Low-cost CAVLC Decoder for H.264/AVC
碩士 === 國立中興大學 === 電機工程學系所 === 95 === Context-based adaptive variable length coding (CAVLC) is a new and efficient entropy coding tool for the H.264/AVC. Although the CAVLC provides the excellent compression ratio, the computational complexity of the CAVLC decoder is higher than the traditional varia...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
2007
|
| Online Access: | http://ndltd.ncl.edu.tw/handle/27579812987333353464 |
| Summary: | 碩士 === 國立中興大學 === 電機工程學系所 === 95 === Context-based adaptive variable length coding (CAVLC) is a new and efficient entropy coding tool for the H.264/AVC. Although the CAVLC provides the excellent compression ratio, the computational complexity of the CAVLC decoder is higher than the traditional variable length decoder. This report proposes a low-power and low-cost architecture of the CAVLC decoder for the H.264/AVC baseline profile. The research derives the optimum power model for the variable length LUT of the CAVLC decoder, and then we merge the codeword length to reduce the hardware cost among the different LUT. Moreover, the design is based on the 0.18-μm TSMC CMOS technology. The experimental results show that the proposed decoder operates at the 125 MHz clock frequency with the hardware cost of 4412 gates. Furthermore, the proposed design can reduce the power consumption about 44% to 48% more than the previous low-power CAVLD schemes did.
|
|---|