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Low Power Encoding for Phase Change Memory

A novel encoding scheme that reduces battery power consumption during data storage operations, to help improve battery life.

Background

Phase change memory (PCM) utilises specific write operations to help store memory. These write operations are asymmetric depending on the data value being written to the memory. The asymmetry might increase power consumption which can have a negative impact on battery life. There are currently different data encoding types to try and improve battery life, but they do not take this asymmetry into account.

Technology Overview

This technology is an encoding scheme that takes into account the operational characteristics of PCM to reduce battery power consumption during data storage operations. Additionally, this approach reduces the cumulative number of read and write operations to the memory therefore prolonging the life of the memory unit.

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