System software and hardware support considerations for digital video and audio computing
- 31 December 2002
- proceedings article
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
Digital video and audio (DVA) NO presents special problems to a computer system's underlying support soft- ware and hardware. These problems are due to the high data rates and timing constraints of DVA. To address these problems, more efficient data movement (minimizing data copying wherever possible), and better control over low-level timing of It0 transfers, is required. System sofr- ware must take better advantage of It0 bus functionality such as burst-mode transfers and peer-to-peer communi- cation. While complex embedded systems are discour- aged, controllers may be equipped with special-purpose functionality which causes a reduction in data movement, such as compressionldecompression hardware. Finally, system It0 software should support separation of data transfer and It0 control.Keywords
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