A 385 MHz 13.54 K Gates Delay Balanced Two-Level CAVLC Decoder for Ultra HD H.264/AVC Video

To satisfy the heavy performance requirement in real-time high-resolution H.264/AVC, very large-scale integrated implementation of the entropy decoder is necessary since it dominates the overall decoder throughput. In this paper, we propose a high-throughput delay balanced two-level context-based ad...

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Bibliographic Details
Published in:IEEE transactions on circuits and systems for video technology Vol. 22; no. 11; pp. 1604 - 1610
Main Authors: Liao, Yuan-Hsin, Li, Gwo-Long, Chang, Tian-Sheuan
Format: Journal Article
Language:English
Published: New York, NY IEEE 01.11.2012
Institute of Electrical and Electronics Engineers
Subjects:
Applied sciences
Circuit properties
Coding, codes
Context-adaptive variable length decoder (CAVLD)
Decoding
Delay
Design. Technologies. Operation analysis. Testing
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Encoding
Exact sciences and technology
H.264
Image processing
Information, signal and communications theory
Integrated circuits
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Signal and communications theory
Signal convertors
Signal processing
Telecommunications and information theory
Throughput
Video coding
Video coding
High resolution
VLSI circuit
H.264
Information rate
Context-adaptive variable length decoder (CAVLD)
Decoding circuit
Entropy
Information transmission
Adaptive decoding
Implementation
Video signal processing
Adaptive coding
Time resolution
Performance requirement
Complementary MOS technology
Integrated circuit
Critical path
Delay time
Variable length code
Comparative study
ISSN:1051-8215, 1558-2205
Online Access:Get full text
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Description
Summary:To satisfy the heavy performance requirement in real-time high-resolution H.264/AVC, very large-scale integrated implementation of the entropy decoder is necessary since it dominates the overall decoder throughput. In this paper, we propose a high-throughput delay balanced two-level context-based adaptive variable length coding (CAVLC) decoder with 21% shorter critical path delay in comparison to the traditional two-level decoder design. Furthermore, redundant decoding processes are removed by a skipping mechanism. The proposed CAVLC decoder only needs 127.13 cycles per macroblock on average to support level 5.1 decoding with 13.54k gate counts under 90-nm CMOS technology.
ISSN:1051-8215
1558-2205
DOI:10.1109/TCSVT.2012.2202081