公开(公告)号：US20210103529A1

公开(公告)日：2021-04-08

申请号：US17106206

申请日：2020-11-30

Applicant: Silicon Motion, Inc.

Inventor： Chih-Yu Lin ,  Hung-Ting Pan ,  Sung-Ling Hsu

IPC: G06F12/14 ,  G06F12/06 ,  G06F21/62 ,  G06F3/06

Abstract: A method for performing adaptive locking range management, an associated data storage device and a controller thereof are provided. The method may include: receiving a security command from outside of the data storage device, wherein the security command is related to changing an old locking range into a new locking range; obtaining a start Logical Block Address (LBA) and a length value of the new locking range according to the security command; determining whether the start LBA of the new locking range is less than an end LBA of the old locking range, and determining whether an end LBA of the new locking range is greater than a start LBA of the old locking range; and in response to both determination results being true, performing data trimming on any respective non-overlapped portions of the new locking range and the old locking range.

公开(公告)号：US10884954B2

公开(公告)日：2021-01-05

申请号：US16503591

申请日：2019-07-04

Applicant: Silicon Motion Inc.

Inventor： Chih-Yu Lin ,  Hung-Ting Pan ,  Sung-Ling Hsu

IPC: G06F13/00 ,  G06F12/14 ,  G06F12/06 ,  G06F21/62 ,  G06F3/06

Abstract: A method for performing adaptive locking range management, an associated data storage device and a controller thereof are provided. The method may include: receiving a security command from outside of the data storage device, wherein the security command is related to changing an old locking range into a new locking range; obtaining a start Logical Block Address (LBA) and a length value of the new locking range according to the security command; determining whether the start LBA of the new locking range is less than an end LBA of the old locking range, and determining whether an end LBA of the new locking range is greater than a start LBA of the old locking range; and in response to both determination results being true, performing data trimming on any respective non-overlapped portions of the new locking range and the old locking range.

公开(公告)号：US11360912B2

公开(公告)日：2022-06-14

申请号：US17106206

申请日：2020-11-30

Applicant: Silicon Motion, Inc.

Inventor： Chih-Yu Lin ,  Hung-Ting Pan ,  Sung-Ling Hsu

IPC: G06F12/00 ,  G06F12/14 ,  G06F12/06 ,  G06F21/62 ,  G06F3/06

Abstract: A method for performing adaptive locking range management, an associated data storage device and a controller thereof are provided. The method may include: receiving a security command from outside of the data storage device, wherein the security command is related to changing an old locking range into a new locking range; obtaining a start Logical Block Address (LBA) and a length value of the new locking range according to the security command; determining whether the start LBA of the new locking range is less than an end LBA of the old locking range, and determining whether an end LBA of the new locking range is greater than a start LBA of the old locking range; and in response to both determination results being true, performing data trimming on any respective non-overlapped portions of the new locking range and the old locking range.

公开(公告)号：US20200089627A1

公开(公告)日：2020-03-19

申请号：US16503591

申请日：2019-07-04

Applicant: Silicon Motion Inc.

Inventor： Chih-Yu Lin ,  Hung-Ting Pan ,  Sung-Ling Hsu

IPC: G06F12/14 ,  G06F12/06 ,  G06F21/62 ,  G06F3/06

Abstract: A method for performing adaptive locking range management, an associated data storage device and a controller thereof are provided. The method may include: receiving a security command from outside of the data storage device, wherein the security command is related to changing an old locking range into a new locking range; obtaining a start Logical Block Address (LBA) and a length value of the new locking range according to the security command; determining whether the start LBA of the new locking range is less than an end LBA of the old locking range, and determining whether an end LBA of the new locking range is greater than a start LBA of the old locking range; and in response to both determination results being true, performing data trimming on any respective non-overlapped portions of the new locking range and the old locking range.

公开(公告)号：US11204700B2

公开(公告)日：2021-12-21

申请号：US16508501

申请日：2019-07-11

Applicant: Silicon Motion, Inc.

Inventor： Sung-Ling Hsu ,  Chih-Yu Lin ,  Hung-Ting Pan

IPC: G06F3/06 ,  G06F12/02 ,  G06F21/57

Abstract: A security extension design for non-volatile memory is shown. There is an in-system program loaded into the non-volatile memory. A memory controller downloads the in-system program to a data register to provide base firmware code, a function pointer structure and security firmware code on the data register. The memory controller executes the base firmware code, and security functions of the security firmware code are called by the base firmware code through information recorded in the function pointer structure and thereby the memory controller is switched to operate the non-volatile memory at a higher security level. The security firmware code uses an application programming interface (API) and is compatible with multiple projects.