Compression for reduction of off-chip video bandwidth

Egbert Jaspers, P.H.N. With, de

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

2 Citations (Scopus)


The architecture for block-based video applications (e.g. MPEG/JPEG coding, graphics rendering) is usually based on a processor engine, connected to an external background SDRAM memory where reference images and data are stored. In this paper, we reduce the required memory bandwidth for MPEG coding up to 67% by identifying the optimal block configuration and applying embedded data compression up to a factor four. It is shown that independent compression of fixed-sized data blocks with a fixed compression ratio can decrease the memory bandwidth for a limited set of compression factors only. To achieve this result, we exploit the statistical properties of the burst-oriented data exchange to memory. It has been found that embedded compression is particularly attractive for bandwidth reduction when a compression ratio 2 or 4 is chosen. This moderate compression factor can be obtained with a low-cost compression scheme such as DPCM with a small acceptable loss of quality.
Original languageEnglish
Title of host publicationMultimedia Processors 2002
EditorsV. Michael Bove Jr., S.I. Sudharsanan
Place of PublicationBellingham
ISBN (Print)0-8194-4416-6
Publication statusPublished - 2002
EventConf. Multimedia Processors 2002; San Jose (CA) -
Duration: 23 Jan 200225 Jan 2002

Publication series

NameProceedings of SPIE


ConferenceConf. Multimedia Processors 2002; San Jose (CA)
OtherConf. Multimedia Processors 2002; San Jose (CA)


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