Patent ID: 9471227
Filing Date: 2016-10-18
CPC Classification: G06F,G08B,G11C,H04L

Claim Text:
1. A method for implementing data write to phase-change-memory (PCM) comprising: starting a data write; responsive to starting the data write, reading a block of data from a prefetched read data region from the PCM prior to performing the data write to the PCM; said prefetched read data region includes a region near the data write; storing the read block of data from the prefetched read data region to a controller for the PCM, keeping a cache copy of the read block of data in said controller for the duration of the data write operation; responsive to receiving a read request to the prefetched read data region during the data write operation, performing the read request from the cached data copy in the controller, preventing read interrupt during the data write operation without a write interruption; and receiving a second read request to the pre-fetched read data region during the write operation, performing the second read request from the cached data copy in the controller, preventing read interrupt during the data write operation.