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1. (EP1739683) Space management for managing high capacity nonvolatile memory

Office : European Patent Office
Application Number: 06076748 Application Date: 30.03.2000
Publication Number: 1739683 Publication Date: 03.01.2007
Publication Kind : B1
IPC:
G11C 16/04
G06F 12/02
G11C 8/12
G11C 16/08
G11C 16/10
G11C 16/16
G PHYSICS
11
INFORMATION STORAGE
C
STATIC STORES
16
Erasable programmable read-only memories
02
electrically programmable
04
using variable threshold transistors, e.g. FAMOS
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
12
Accessing, addressing or allocating within memory systems or architectures
02
Addressing or allocation; Relocation
G PHYSICS
11
INFORMATION STORAGE
C
STATIC STORES
8
Arrangements for selecting an address in a digital store
12
Group selection circuits, e.g. for memory block selection, chip selection, array selection
G PHYSICS
11
INFORMATION STORAGE
C
STATIC STORES
16
Erasable programmable read-only memories
02
electrically programmable
06
Auxiliary circuits, e.g. for writing into memory
08
Address circuits; Decoders; Word-line control circuits
G PHYSICS
11
INFORMATION STORAGE
C
STATIC STORES
16
Erasable programmable read-only memories
02
electrically programmable
06
Auxiliary circuits, e.g. for writing into memory
10
Programming or data input circuits
G PHYSICS
11
INFORMATION STORAGE
C
STATIC STORES
16
Erasable programmable read-only memories
02
electrically programmable
06
Auxiliary circuits, e.g. for writing into memory
10
Programming or data input circuits
14
Circuits for erasing electrically, e.g. erase voltage switching circuits
16
for erasing blocks, e.g. arrays, words, groups
CPC:
G06F 12/0246
G11C 8/12
G11C 16/04
G11C 16/08
G11C 16/102
G11C 16/16
Applicants: LEXAR MEDIA INC
Inventors: ESTAKHRI PETRO
IMAN BERHANU
GUO MIN
Priority Data: 00920016 30.03.2000 EP
28372899 01.04.1999 US
51922600 06.03.2000 US
Title: (DE) Platzverwaltung zur Verwaltung eines nichtflüchtigen Hochleistungsspeichers
(EN) Space management for managing high capacity nonvolatile memory
(FR) Gestion de l'espace pour la gestion de la mémoire non volatile de haute capacité
Abstract: front page image
(EN) A digital system has a host coupled to at least two nonvolatile memory devices, for storing digital information in the nonvolatile memory devices and reading the stored digital information from the nonvolatile memory devices, the memory devices being organized into blocks of sectors of information. A method for erasing digital information stored within the blocks of the nonvolatile memory devices comprises: a. assigning a predetermined number of blocks, in sequential order, to each of the nonvolatile memory devices, each block having a predetermined number of sectors; b. forming 'super' blocks, each 'super' block comprising a plurality of blocks; c. selecting at least two blocks within a particular 'super' block, said at least two selected blocks including a first selected block located in a first nonvolatile memory device and a second selected block located in a second nonvolatile memory device for erasure of the particular 'super' block; and d. erasing the first and second selected blocks of the particular super block so that erasure of the second block is performed without waiting for completion of the erasure of the first block; wherein the speed of erase operations in the digital system is substantially increased thereby increasing the overall performance of the digital system.
Also published as:
EP1228510EP1729304AU2000040617WO/2000/060605