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1. (EP1548599) Faster write operations to nonvolatile memory by manipulation of frequently accessed sectors

Office : European Patent Office
Application Number: 04257701 Application Date: 10.12.2004
Publication Number: 1548599 Publication Date: 29.06.2005
Publication Kind : B1
IPC:
G06F 3/06
G06F 12/02
G06F 3/08
G06F 11/10
G06F 12/00
G11C 8/12
G11C 16/04
G11C 16/08
G11C 16/10
G11C 29/00
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
3
Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
06
Digital input from, or digital output to, record carriers
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
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
3
Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
06
Digital input from, or digital output to, record carriers
08
from or to individual record carriers, e.g. punched card
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
11
Error detection; Error correction; Monitoring
07
Responding to the occurrence of a fault, e.g. fault tolerance
08
Error detection or correction by redundancy in data representation, e.g. by using checking codes
10
Adding special bits or symbols to the coded information, e.g. parity check, casting out nines or elevens
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
12
Accessing, addressing or allocating within memory systems or architectures
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
04
using variable threshold transistors, e.g. FAMOS
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
29
Checking stores for correct operation; Testing stores during standby or offline operation
CPC:
G06F 3/0613
G06F 3/064
G06F 3/0679
G06F 11/1068
G06F 12/0246
G11C 8/12
G11C 16/08
G11C 16/102
G11C 29/765
G11C 29/82
Applicants: LEXAR MEDIA INC
Inventors: ESTAKHRI PETRO
NEMAZIE SAM
Priority Data: 10741129 19.12.2003 US
Title: (DE) Schnellere Schreibbefehle zum nichtflüchtigen Speicher durch Manipulation von Sektoren auf die häufig zugegriffen wird
(EN) Faster write operations to nonvolatile memory by manipulation of frequently accessed sectors
(FR) Opération d'écriture plus rapide à la mémoire non volatile par manipulation des secteurs à accès fréquents
Abstract: front page image
(EN) An embodiment of the present invention includes a digital equipment system having a host for sending write commands to write files having sector information and having a controller device responsive to the commands for writing and updating FSInfo sector information. The controller controls a nonvolatile memory system organized into blocks, each block including a plurality of sector locations for storing sector information, a particular free block, designated for storing FSInfo sector information. Upon updating of the FSInfo sector, the updated FSInfo sector information is written to a next free sector of the dedicated block thereby avoiding moving the sectors of the particular block to another block, hence, improving system performance.
Also published as:
JP2005182793CN1658171