Invention Grant
US08954647B2 Systems and methods for redundantly storing metadata for non-volatile memory
有权
用于冗余存储用于非易失性存储器的元数据的系统和方法
- Patent Title: Systems and methods for redundantly storing metadata for non-volatile memory
- Patent Title (中): 用于冗余存储用于非易失性存储器的元数据的系统和方法
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Application No.: US13015723Application Date: 2011-01-28
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Publication No.: US08954647B2Publication Date: 2015-02-10
- Inventor: Daniel J. Post
- Applicant: Daniel J. Post
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Van Court & Aldridge LLP
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G06F11/14

Abstract:
Systems and methods are provided for storing data to or reading data from a non-volatile memory (“NVM”), such as flash memory, using a metadata redundancy scheme. In some embodiments, an electronic device, which includes an NVM, may also include a memory interface for controlling access to the NVM. The memory interface may receive requests to write user data to the NVM. The user data from each request may be associated with metadata, such as a logical address, a directional flag, or other data. In response to a write request, the NVM interface may store the user data and its associated metadata in a first memory location (e.g., page), and may store a redundant copy of the metadata in a second memory location. The directional flag indicates the geometric relationship between the first memory location and the second memory location. Thus, if the first memory location becomes inaccessible, the memory interface can still recover the metadata from the backup copy stored in the second memory location.
Public/Granted literature
- US20120198123A1 SYSTEMS AND METHODS FOR REDUNDANTLY STORING METADATA FOR NON-VOLATILE MEMORY Public/Granted day:2012-08-02
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