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

Qin Liu*, Seiichiro Hiratsuka, Kazunori Shimizu, Shinsuke Ushiki, Satoshi Goto, Takeshi Ikenaga

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


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,l8iim CMOS technology. A total of 153 K gates with 558 kbits SRAM have been integrated into a 5.0mm x 3.5mm die. The power consumption is 40.87mW at 80 MHz for VGA at 30 fps and 1.97 mW at 3.3 MHz for QCIF at 15 fps.

Original languageEnglish
Pages (from-to)449-456
Number of pages8
JournalIEICE Transactions on Electronics
Issue number4
Publication statusPublished - 2008 Apr


  • Low power consumption
  • ME-MC processo
  • Motion estimation
  • Quadtree
  • Video surveillance system

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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