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TWI346286B - Method and non-volatile memory storage system for phased garbage collection - Google Patents

Method and non-volatile memory storage system for phased garbage collection

Info

Publication number
TWI346286B
TWI346286B TW096134956A TW96134956A TWI346286B TW I346286 B TWI346286 B TW I346286B TW 096134956 A TW096134956 A TW 096134956A TW 96134956 A TW96134956 A TW 96134956A TW I346286 B TWI346286 B TW I346286B
Authority
TW
Taiwan
Prior art keywords
volatile memory
storage system
memory storage
garbage collection
phased garbage
Prior art date
Application number
TW096134956A
Other languages
Chinese (zh)
Other versions
TW200821830A (en
Inventor
Sergey Anatolievich Gorobets
Original Assignee
Sandisk Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US11/541,371 external-priority patent/US7444463B2/en
Priority claimed from US11/540,778 external-priority patent/US7464216B2/en
Application filed by Sandisk Corp filed Critical Sandisk Corp
Publication of TW200821830A publication Critical patent/TW200821830A/en
Application granted granted Critical
Publication of TWI346286B publication Critical patent/TWI346286B/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/0223—User address space allocation, e.g. contiguous or non contiguous base addressing
    • G06F12/023—Free address space management
    • G06F12/0238—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory
    • G06F12/0246—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory in block erasable memory, e.g. flash memory
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/0223—User address space allocation, e.g. contiguous or non contiguous base addressing
    • G06F12/023—Free address space management
    • G06F12/0253—Garbage collection, i.e. reclamation of unreferenced memory
    • G06F12/0269—Incremental or concurrent garbage collection, e.g. in real-time systems
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
    • G06F2212/72—Details relating to flash memory management
    • G06F2212/7203—Temporary buffering, e.g. using volatile buffer or dedicated buffer blocks
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
    • G06F2212/72—Details relating to flash memory management
    • G06F2212/7205—Cleaning, compaction, garbage collection, erase control

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)
  • Memory System (AREA)
  • Recording Measured Values (AREA)
TW096134956A 2006-09-29 2007-09-19 Method and non-volatile memory storage system for phased garbage collection TWI346286B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/541,371 US7444463B2 (en) 2006-09-29 2006-09-29 System for phased garbage collection with state indicators
US11/540,778 US7464216B2 (en) 2006-09-29 2006-09-29 Method for phased garbage collection with state indicators

Publications (2)

Publication Number Publication Date
TW200821830A TW200821830A (en) 2008-05-16
TWI346286B true TWI346286B (en) 2011-08-01

Family

ID=39198264

Family Applications (1)

Application Number Title Priority Date Filing Date
TW096134956A TWI346286B (en) 2006-09-29 2007-09-19 Method and non-volatile memory storage system for phased garbage collection

Country Status (2)

Country Link
TW (1) TWI346286B (en)
WO (1) WO2008042592A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8285970B2 (en) 2008-11-06 2012-10-09 Silicon Motion Inc. Method for managing a memory apparatus, and associated memory apparatus thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7139864B2 (en) * 2003-12-30 2006-11-21 Sandisk Corporation Non-volatile memory and method with block management system
US7315917B2 (en) * 2005-01-20 2008-01-01 Sandisk Corporation Scheduling of housekeeping operations in flash memory systems

Also Published As

Publication number Publication date
WO2008042592A2 (en) 2008-04-10
TW200821830A (en) 2008-05-16
WO2008042592A3 (en) 2008-06-12

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees