Invention Grant
- Patent Title: Flash controllers, methods, and corresponding storage devices capable of rapidly/fast generating or updating contents of valid page count table
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Application No.: US16036954Application Date: 2018-07-17
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Publication No.: US10936199B2Publication Date: 2021-03-02
- Inventor: Hsu-Ping Ou
- Applicant: Silicon Motion Inc.
- Applicant Address: TW Hsinchu County
- Assignee: Silicon Motion Inc.
- Current Assignee: Silicon Motion Inc.
- Current Assignee Address: TW Hsinchu County
- Agent Winston Hsu
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G06F13/00 ; G06F3/06
Abstract:
A method of a flash controller to be coupled between a flash memory device and a host device is provided. The flash memory device has a plurality of blocks each having a plurality of pages, and the method comprises: receiving a trim/erase/unmap command from the host device; obtaining a storage space, which is to be erased, from the trim/erase/unmap command; comparing a space size of the storage space with a threshold to determine whether the space size is larger than the threshold; and resetting valid page counts of the plurality of blocks of the flash memory device when the space size is larger than the threshold.
Public/Granted literature
Information query
