公开(公告)号：US20170177497A1

公开(公告)日：2017-06-22

申请号：US14976537

申请日：2015-12-21

Applicant: QUALCOMM INCORPORATED

Inventor： DEXTER TAMIO CHUN ,  HYUNSUK SHIN

IPC: G06F12/10 ,  G06F12/08

CPC classification number: G06F12/1009 ,  G06F12/0246 ,  G06F12/0802 ,  G06F12/1081 ,  G06F2212/1024 ,  G06F2212/401 ,  G06F2212/70 ,  G06F2212/7201

Abstract: Systems and methods are disclosed for providing logical-to-physical address translation for a managed NAND flash storage device. One embodiment is a system comprising a system on chip (SoC) electrically coupled to a volatile memory device. A direct memory access (DMA) controller is electrically coupled to the SoC. The DMA controller receives a logical address to be translated to a physical address associated with a managed NAND flash storage device. A cache controller is configured to fetch from the volatile memory device a portion of a logical-to-physical (L2P) address table comprising a compressed version of a L2P mapping for the logical address. A compression block is configured to decompress the compressed version of the L2P mapping to determine the physical address corresponding to the logical address.

公开(公告)号：US20190272110A1

公开(公告)日：2019-09-05

申请号：US16287393

申请日：2019-02-27

Applicant: QUALCOMM Incorporated

Inventor： HYUNSUK SHIN ,  Hung VUONG

IPC: G06F3/06 ,  G06F11/30

Abstract: Methods and apparatuses to fragment data in a flash memory device are presented. The apparatus includes a host configured to request a flash memory device, via a memory bus, to fragment data stored in the flash memory device in response to a determination of a data fragmentation status of the flash memory device exceeding a threshold. The method includes determining a data fragmentation status of the flash memory device exceeding a threshold and requesting, by a host, the flash memory device to fragment data stored in the flash memory device in response to the determining the data fragmentation status exceeding the threshold.