A 41 mW VGA@30 fps quadtree video encoder for video surveillance systems

作者：Liu Qin^*; Hiratsuka Seiichiro; Shimizu Kazunori; Ushiki Shinsuke; Goto Satoshi; Ikenaga Takeshi

来源：IEICE - Transactions on Electronics, 2008, E91C(4): 449-456.

DOI：10.1093/ietele/e9l-c.4.449

• video surveillance system
• motion estimation
• ME-MC processor
• quadtree
• low power consumption

Video surveillance systems have a huge market, as indicated by the number of installed cameras, particularly for low-power systems. In this paper, we propose a low-power quadtree video encoder for video surveillance systems. It features a low-complexity motion estimation algorithm, an application-specific ME-MC processor, a dedicated quadtree encoder engine and a processor control-based clock-gating technique. A chip capable of encoding 30 fps VGA (640 x 480) at 80 MHz is fabricated using 0.18 mu m CMOS technology. A total of 153 K gates with 558 kbits SRAM have been integrated into a 5.0 mm x 3.5 mm die. The power consumption is 40.87 mW at 80 MHz for VGA at 30 fps and 1.97 mW at 3.3 MHz for QCIF at 15 fps.

• 出版日期2008-4