Qualcomm Incorporated

Qualcomm Innovation Center, Inc.

Richard Patrick

Benish Babu

Nikhilesh Reddy

William Kimberly

Robert Coleman

Efrain Ortuno

William Edward Kimberly

The present disclosure provides methods for copying a data page in a flash memory device using a flash memory controller. A method may comprise receiving, at the host flash controller, a copy command from a host processor, in response to the copy command, transmitting a read command to the unmanaged flash memory storage device via a bus, wherein the read command indicates particular data, receiving the particular data from the unmanaged flash memory storage device via the bus, storing the particular data in a data buffer included in the host flash controller, and transmitting to the unmanaged flash memory storage device, via the bus, a write command to write the particular data.

Methods and apparatuses for copying a data page in an unmanaged flash memory device

A computing device and method for managing file access control policies on a computing device are disclosed. The method includes maintaining file-access policies in user space, receiving, at a kernel level, from a user in user space, a request to access a file, and directing the request from the kernel level to a file-policy manager in user space. At least one of the of the file-access policies is enforced in user space with the file-policy manager to grant or deny access to the file, and file operations are performed on the file using only kernel-level calls when access to the to the file is granted.

Stackable file system with user space policy management

Methods, systems and devices provide for refreshing a data image stored on a NAND memory device. Aspects include sequentially copying each of a series of static data partitions into a scrub portion that does not store data image partitions identified in the partition table. The sequential copying begins with a last static data partition and proceeds sequentially to a first static data partition when the scrub portion occupies higher order addresses than the last address of the last static data partition. Alternatively, the sequential copying begins with the first static data partition and proceeds sequentially to the last static data partition when the scrub portion occupies addresses that are lower than the first address of the first static data partition. The partition table may be updated as each static data partition is stored to the scrub portion. Such operations enable fail-safe scrubbing and refreshing of data in a NAND device.

Fail safe refresh of data stored in NAND memory device

Growing community of inventors

San Diego, CA, United States of America

Richard Patrick