2 research outputs found
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Power efficient H.264 video decoding in embedded multiprocessor
This thesis presents a novel methodology that enables power efficient video decoding
in an embedded system based on MPSoC (Multiprocessor System on Chip). This
methodology is a physical combination of parallel processing which reduces power
consumption of processors by exploiting thread-level parallelism and Dynamic
Voltage Frequency Scaling (DVFS) that allows a processor to dynamically change its
speed and voltage at run time. The video decoding process must be well optimized to
improve performance continuously due to the many complex computation units.
Since these intense computation functions have their own specific patterns, they were
mainly performed by specialized hardware device. This kind of device, one that
combines a main processor and an Intellectual Property (IP), still dominates the
multimedia market place because of its adjustable performance, power, and
convenience of manufacturing, even though the powerful multi-core embedded
processor was released the market a few years ago. Approach of this thesis exploits
inherent advantages of the multiprocessor without additional hardware
implementation, and presents a thorough analysis of video decoding process in an
embedded system. A target application is H.264/AVC, a well-adapted video coding
standard for current multimedia environments which is used for many portable
devices