Title :
Switched-current technique for video compression and quantization
Author :
Handkiewicz, Andrzej ; Kropidlowski, Marek ; Lukowiak, Marcin
Author_Institution :
Fac. of Electr. Eng., Tech. Univ. Poznan, Poland
Abstract :
Portable consumer products need low-cost, low-power chips for realization of signal processing and image compression functions. In this paper a modification of such a chip for a digital video camera is presented. The chip contains an image sensing array composed of photodiodes, a two-dimensional DCT processor and an entropy coding section. The processor is designed in a switched-current (SI) technique and contains current mirrors and memory cells. In order to examine these elementary cells, an experimental chip in AMS 0.8 μm technology was fabricated
Keywords :
CMOS digital integrated circuits; CMOS image sensors; digital signal processing chips; discrete cosine transforms; entropy codes; switched current circuits; vector quantisation; video cameras; video coding; 0.8 mum; AMS 0.8 μm technology; CMOS digital technology; current mirrors; digital video camera; entropy coding section; image sensing array; low-cost low-power chips; memory cells; quantization; switched-current technique; two-dimensional DCT processor; video compression; Array signal processing; Consumer products; Digital cameras; Discrete cosine transforms; Entropy coding; Image coding; Photodiodes; Quantization; Video compression; Video signal processing;
Conference_Titel :
ASIC/SOC Conference, 1999. Proceedings. Twelfth Annual IEEE International
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-5632-2
DOI :
10.1109/ASIC.1999.806523
