University of Bologna

Dipartimento di Elettronica, Informatica e Sistemistica

Publication Database Query

Searched for "icassp95:Sco95"
Clicking on the number of each publication you can retrieve the bibtex entry. If available, the abstract can be accessed clicking on the title of the work.

A 2D-DCT Low-Power Architecture for H.261 Coders

E. Scopa and A. Leone and R. Guerrieri and G. Baccarani


A low-power architecture for 2D-DCT is presented. It has been designed for portable H.261-compliant video-telephone applications, but most of the results and considerations apply to MPEG systems too. The presence of quantization in the coding process has been exploited, adapting the precision of DCT calculations to the quantization noise level. The proposed architecture has the capability of dynamically controlling power consumption by reducing the precision to the minimum required level and turning off sub-systems when they are not necessary for the computation. Compared with a standard implementation, power consumption is reduced by a factor between 7 and 10, without appreciable degradation of the transmission quality.

Microelectronics Group Home Page Staff
Research Activities Teaching Activity
Publications Local Stuff
DEIS Home Page University of Bologna Home Page

External link, Local link, For local sites only, Stiil empty.