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

fYear

1999

fDate

1999

Firstpage

299

Lastpage

303

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;

fLanguage

English

Publisher

ieee

Conference_Titel

ASIC/SOC Conference, 1999. Proceedings. Twelfth Annual IEEE International

Conference_Location

Washington, DC

Print_ISBN

0-7803-5632-2

Type

conf

DOI

10.1109/ASIC.1999.806523

Filename

806523