Title :
A real time high definition architecture for the Variable-Length Reference Frame Decoder
Author :
Silveira, Dieison ; Porto, Marcelo ; Agostini, Luciano
Author_Institution :
Group of Archit. & Integrated Circuits, Fed. Univ. of Pelotas, Pelotas, Brazil
fDate :
Feb. 27 2013-March 1 2013
Abstract :
Video coding systems, especially for high definition videos, require a large external memory bandwidth to encode a single video frame. Many modules of the current video encoders must access the external memory to read or write a huge amount of data. This process requires a large memory bandwidth, and also implies in large power consumption, since memory accesses are one of the main power demanding element in current digital systems. In this sense, this paper presents a real time high definition hardware architecture for the variable length reference frame decoder. This is the decoder used by the Reference Frame Context Adaptive Variable-Length Coder (RFCAVLC). The RFCAVLD (Decoder) was described in VHDL and synthesized to an Altera Stratix 4 FPGA. The proposed design is able to reach real-time encoding for WQSXGA (3200 × 2048 pixels) videos at 34 fps. The synthesis results achieved by the designed architecture indicate that this solution can be easily coupled to a complete video encoder system, with negligible hardware overhead and without compromising throughput.
Keywords :
field programmable gate arrays; power consumption; variable length codes; video codecs; video coding; Altera Stratix 4 FPGA; RFCAVLD; WQSXGA; high definition videos; memory accesses; memory bandwidth; power consumption; real time high definition architecture; reference frame context adaptive variable-length coder; variable-length reference frame decoder; video coding systems; video encoder system; video frame; Bandwidth; Decoding; Encoding; Hardware; Memory management; Standards; Video coding; Hardware Design; Memory Bandwidth Reduction; Motion Estimation; Real-Time Video Coding; Reference Frame Decoder;
Conference_Titel :
Circuits and Systems (LASCAS), 2013 IEEE Fourth Latin American Symposium on
Conference_Location :
Cusco
Print_ISBN :
978-1-4673-4897-3
DOI :
10.1109/LASCAS.2013.6519062