Title :
A low-power minimum distance 1D-search engine using hybrid digital/analog circuit techniques
Author :
Kwon, Chang-Ki ; Lee, Kwyro
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea
Abstract :
This minimum distance 1D-search engine (MDSE) realizes a pattern-matching hardware accelerator for portable multimedia and intelligent processing systems. The chip executes highly parallel computation of L1-norms between an input key and stored multiple reference records, and search of the minimum distance among them in 1 dimensional (1D) memories. According to architectural-level power estimation, the proposed MDSE improves the power reduction by orders of magnitude as compared to the conventional systems, as the number of records increases. Two novel circuits, such as merged memory logic (MML) and digital/analog mixed winner-take-all (DAM-WTA) circuit, have been implemented with 0.6 μm CMOS technology. The simulation results of the 4bit-8word MDSE show that the power dissipation (=2.8 mW at 3 V) of the MML coincides with the estimated power within 43% error, and the worst-case delay of the DAM-WTA is less than 80 ns
Keywords :
CMOS integrated circuits; low-power electronics; mixed analogue-digital integrated circuits; multimedia computing; parallel processing; pattern matching; 0.6 micron; 2.8 mW; 3 V; 80 ns; CMOS technology; architectural-level power estimation; digital/analog mixed winner-take-all; estimated power; highly parallel computation; hybrid digital/analog circuit techniques; intelligent processing systems; low-power electronics; minimum distance 1D-search engine; pattern-matching hardware accelerator; portable multimedia; power dissipation; stored multiple reference records; worst-case delay; CMOS analog integrated circuits; CMOS digital integrated circuits; CMOS logic circuits; CMOS technology; Concurrent computing; Delay estimation; Engines; Hardware; Hybrid intelligent systems; Multimedia systems;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.777841
