Title :
A sub 100 mW H.264/AVC MP@L4.1 integer-pel motion estimation processor VLSI for MBAFF encoding
Author :
Murachi, Yuichiro ; Mizuno, Kosuke ; Miyakoshi, Junichi ; Hamamoto, Masaki ; Iinuma, Takahiro ; Ishihara, Tomokazu ; Yin, Fang ; Lee, Jangchung ; Kamino, Tetsuya ; Kawaguchi, Hiroshi ; Yoshimoto, Masahiko
Author_Institution :
Dept. of Comput. Sci. & Syst. Eng., Kobe Univ., Kobe
Abstract :
This paper describes a sub 100-mW H.264/AVC MP@L4.1 integer-pel motion estimation processor core for a low power video encoder. It supports macro block adaptive frame field (MBAFF) encoding and bi-directional prediction for a resolution of 1920times1080 pixels at 30 fps which haven´t been realized by conventional methods. The proposed processor core features a novel hierarchical algorithm, a reconfigurable ring-connected systolic array architecture, and a segmentation- free rectangle-access search window buffer. The processor core has been designed in a 90 nm CMOS technology, and its core size is 2.5times2.5 mm2. With one core, one reference frame can be handled, and 48 mW is consumed at 1 V. Two-core configuration dissipates 96 mW for two reference frames.
Keywords :
CMOS integrated circuits; VLSI; adaptive codes; block codes; buffer circuits; image resolution; integrated circuit design; motion estimation; video coding; CMOS technology; H.264-AVC; MBAFF Encoding; bidirectional prediction; integer-pel motion estimation processor VLSI; macro block adaptive frame field encoding; pixels resolution; power 100 mW; power 48 mW; power 96 mW; power video encoder; ring-connected systolic array architecture; segmentation-free rectangle-access search; size 90 nm; voltage 1 V; window buffer; Automatic voltage control; CMOS technology; Computer architecture; Cyclic redundancy check; Encoding; Image analysis; Motion estimation; Search methods; Systolic arrays; Very large scale integration;
Conference_Titel :
Circuits and Systems, 2008. ISCAS 2008. IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-1683-7
Electronic_ISBN :
978-1-4244-1684-4
DOI :
10.1109/ISCAS.2008.4541551