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Built-in mapping message of memory device

A technology for mapping information and memory, applied in the field of semiconductor memory

Active Publication Date: 2013-01-16
MICRON TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Built-in mapping message of memory device
  • Built-in mapping message of memory device
  • Built-in mapping message of memory device

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Embodiment Construction

[0016] In the following detailed description of the present embodiments, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration specific embodiments in which the described embodiments may be practiced. These embodiments have been described in sufficient detail to enable those skilled in the art to practice the invention, and it is to be understood that other embodiments may be utilized and procedural, electrical, or mechanical changes may be made without departing from the scope of the invention. Accordingly, the following detailed description should not be viewed in a limiting sense.

[0017] 1 is a block diagram of a solid-state drive (SSD) 100 in communication with (eg, coupled to) a processor 130 and as part of an electronic system 120, according to one embodiment of the invention. Electronic system 120 can be regarded as the host of SSD 100 because it controls the operation of SSD 100 through its processor 1...

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Abstract

Memory modules and methods of operating memory modules embed mapping information within blocks of memory cells to which the mapping information pertains. In particular, when a page is written for a logical data block, that page includes a snapshot of the current mapping information for that logical data block. In this manner, the last valid physical page of a logical data block will contain a physical / logical mapping of that block. Thus, instead of scanning every valid page of the memory device to rebuild the mapping information, the memory module may scan only for the last valid physical page of each logical data block. Once the last valid physical page is discovered for a logical data block, the latest mapping information for that logical data block may be read from that page.

Description

technical field [0001] The present disclosure relates generally to semiconductor memory, and in particular, in one or more embodiments, the present disclosure relates to methods and apparatus of utilizing embedded mapping information of a memory device. Background technique [0002] Electronic devices typically have some type of mass storage available to them. A common example is a hard disk drive (HDD). HDDs are capable of providing large amounts of storage at relatively low cost, with current consumer HDDs offering capacities in excess of 1 terabyte. [0003] HDDs typically store data on rotating magnetic media or backplanes. Data is usually stored on the backplane as a flux reversal pattern. To write data to a typical HDD, the backplane spins at high speed while a write head floating above the backplane generates a series of magnetic pulses to align the magnetic particles on the backplane to represent the data. To read data from a typical HDD, a resistance change is i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/02G06F12/06
CPCG06F2212/7207G06F2212/7201G06F12/0246G06F12/02
Inventor 弗兰克·陈容圆魏昭
Owner MICRON TECH INC