In this paper, the implementation of a Main Profile H.264 decoder based on a DM642 digital signal processor is described. An initial standard compliant raw-C decoder has been optimized in speed for the target processor. The parallelism between algorithm execution and data movement has been fully exploited using DMA. Also, critical parts of the algorithm have been encoded directly in assembly code to increase the number of instructions per cycle. The decoder has been tested in simulation with actual (transcoded) DVD and digital TV streams. According to these tests, standard definition (D1) real time decoding can be obtained with a DM642@720MHz.
Nomenclature a = defined as a = /3iH/3 0 ) C = radial clearance in journal bearings e = eccentricity h a = mean film thickness in face seals L = bearing length p = pressure p v = cavitation pressure R = bearing radius R e = exterior face seal radius R, -interior face seal radius r = radial coordinate in face seals W = defined as 3iiwL 2 /{p(L)
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.