ST-Ericsson Assigned Patent

Asynchronous bad block management in NAND flash memory
By Francis Pelletier on 2016.12.02

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ST-Ericsson SA, Plan-les-Ouates, Switzerland , has been assigned a patent (9,483,395) developed by Sreekandath, Mahesh, Kerala, India, and Das Purkayastha, Saugata, Bangalore, India, for a "asynchronous bad block management in NAND flash memory."

The abstract of the patent published by the U.S. Patent and Trademark Office states: "Methods for receiving data from a file system and storing it in a flash storage medium, wherein a bad block management process comprises queuing, at a bad block manager, one or more write requests, and receiving data associated with each of the one or more write requests and storing the received data in the bad block manager buffer, and performing cache management of data in the bad block manager buffer and subsequently returning a success status to the file system, and executing the one or more queued write requests in a separate task, wherein the executing comprises programming the received data to the flash storage medium during the bad block management process. Corresponding devices are also provided."

The patent application was filed on June 1, 2011 (13/700,460).