Nancy is the name of a lightweight video codec being used to send video email in the J-Phone design in Japan. The proprietary algorithm uses something called the Structured Meta Scale Polygon to compress data with fewer MIPS than its competition. Nancy can compress and decompress 30 fps at QCIF resolution with as little as 50 MIPS, using on ly 30-49Kbytes of memory.

http://www.eet.com/story/OEG20011130S0080