Abstract
Recently, smart devices such as smart phones, smart TVs, and tablets equipped with high-performance CPUs are widely used in daily life. In particular, to support efficient interactive TV services for smart TVs with set-top boxes, importance must be given to not only system throughput but also real-time performance. That is, real-time operating systems can be used to support real-time features, so the real-time performance of the base operating systems of smart TVs with set-top boxes is very important. In this paper, we analyze the features of a Linux real-time patch, and we adapt this to a Linux set-top box based on the ARM Cortex-A9 in order to improve the real-time performance for efficient interactive TV services. According to the experimental results, the maximum scheduling latency is improved and guaranteed, while the overall system throughput is decreased.
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