Invention Grant
- Patent Title: Data storage devices and data processing methods
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Application No.: US16704646Application Date: 2019-12-05
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Publication No.: US10942858B2Publication Date: 2021-03-09
- Inventor: Kuan-Yu Ke
- Applicant: Silicon Motion, Inc.
- Applicant Address: TW Jhubei
- Assignee: Silicon Motion, Inc.
- Current Assignee: Silicon Motion, Inc.
- Current Assignee Address: TW Jhubei
- Agency: Wang Law Firm, Inc.
- Priority: TW108105660 20190220
- Main IPC: G06F12/08
- IPC: G06F12/08 ; G06F12/0882 ; G06F12/02 ; G06F12/0873 ; G06F12/1009 ; G06F3/06

Abstract:
A data storage device includes a memory device and a memory controller. The memory controller selects a predetermined memory block to receive data and records multiple logical addresses in a first mapping table. The first mapping table records which logical page the data stored in each physical page of the predetermined memory block is directed to. A bit table is stored in a buffer memory and includes multiple fields. Each field records a bit value. When the memory controller writes data of a logical page that corresponds to a first logical address into the predetermined memory block, the memory controller records the first logical address in the first mapping table, converts the first logical address according to a predetermined function to generate a first field index of the bit table and sets the bit value corresponding to the first field index as a first value in the bit table.
Public/Granted literature
- US20200264981A1 Data Storage Devices and Data Processing Methods Public/Granted day:2020-08-20
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