KR100914089B1 - 비휘발성 저장 시스템의 소거 카운트 유지 방법 및 장치 - Google Patents
비휘발성 저장 시스템의 소거 카운트 유지 방법 및 장치 Download PDFInfo
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- KR100914089B1 KR100914089B1 KR1020057007326A KR20057007326A KR100914089B1 KR 100914089 B1 KR100914089 B1 KR 100914089B1 KR 1020057007326 A KR1020057007326 A KR 1020057007326A KR 20057007326 A KR20057007326 A KR 20057007326A KR 100914089 B1 KR100914089 B1 KR 100914089B1
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- erase count
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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
- G06F2212/7211—Wear leveling
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- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
- Read Only Memory (AREA)
- For Increasing The Reliability Of Semiconductor Memories (AREA)
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Claims (29)
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- 비휘발성 메모리 시스템으로서,다수의 블록들(210)을 포함하는 비휘발성 메모리;(124; 174); 및시스템 메모리(454)를 포함하고,상기 시스템 메모리는 다수의 페이지들(810)을 포함하는 소거 카운트 블록(480; 800)을 포함하고;상기 메모리 시스템은, 상기 다수의 블록들에 포함된 각각의 사용 가능한 블록이 소거된 횟수들의 표시기를, 상기 표시기의 다수개가 상기 소거 카운트 블록의 동일한 페이지내에 이들의 대응하는 블록들의 물리적 주소에 따른 순서로 저장되도록, 상기 소거 카운트 블록의 페이지에 저장시키는 수단(726)을 포함하는 것을 특징으로 하는 비휘발성 메모리 시스템.
- 제 18 항에 있어서,상기 소거 카운트 블록은, 상기 다수의 물리적 블록들이 소거된 평균 횟수들의 표시기를 저장하도록 배열된 헤더(820)를 포함하며,상기 메모리 시스템은, 상기 다수의 블록들에 포함된 각각의 블록이 소거된 평균 횟수들을 상기 시스템 메모리내의 상기 소거 카운트 블록의 헤더에 저장시키기 위한 수단을 포함하는 포함하는 것을 특징으로 하는 비휘발성 메모리 시스템.
- 제 18 항에 있어서,상기 표시기를 저장시키는 수단은 사용 불가능 블록 표시기를 사용 불가능한 상기 다수의 블록들에 포함된 블록들에 대응하는 상기 소거 카운트 블록에 더 저장시키는 것을 특징으로 하는 비휘발성 메모리 시스템.
- 제 20 항에 있어서,상기 사용 불가능 블록 표시기는 상기 대응하는 블록이 제조상 결점을 포함함을 표시하기 위한 제 1 사용 불가능 블록 표시기 및 상기 대응하는 블록이 진행성 결점을 포함함을 표시하기 위한 제 2 사용 불가능 블록 표시기를 포함하는 것을 특징으로 하는 비휘발성 메모리 시스템.
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US10/281,696 | 2002-10-28 | ||
US10/281,696 US6831865B2 (en) | 2002-10-28 | 2002-10-28 | Maintaining erase counts in non-volatile storage systems |
Publications (2)
Publication Number | Publication Date |
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KR20050065632A KR20050065632A (ko) | 2005-06-29 |
KR100914089B1 true KR100914089B1 (ko) | 2009-08-27 |
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KR1020057007326A KR100914089B1 (ko) | 2002-10-28 | 2003-09-10 | 비휘발성 저장 시스템의 소거 카운트 유지 방법 및 장치 |
Country Status (10)
Country | Link |
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US (1) | US6831865B2 (ko) |
EP (1) | EP1559016B1 (ko) |
JP (1) | JP4372013B2 (ko) |
KR (1) | KR100914089B1 (ko) |
CN (1) | CN100385415C (ko) |
AT (1) | ATE388440T1 (ko) |
AU (1) | AU2003270527A1 (ko) |
DE (1) | DE60319563T2 (ko) |
TW (1) | TWI261168B (ko) |
WO (1) | WO2004040458A1 (ko) |
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KR20050065632A (ko) | 2005-06-29 |
JP4372013B2 (ja) | 2009-11-25 |
DE60319563T2 (de) | 2009-03-19 |
ATE388440T1 (de) | 2008-03-15 |
EP1559016B1 (en) | 2008-03-05 |
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DE60319563D1 (de) | 2008-04-17 |
TW200422830A (en) | 2004-11-01 |
JP2006504197A (ja) | 2006-02-02 |
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AU2003270527A1 (en) | 2004-05-25 |
CN1701308A (zh) | 2005-11-23 |
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