Source: http://www.google.com/patents/US7747837?dq=5,941,947
Timestamp: 2015-02-02 01:07:59
Document Index: 527702799

Matched Legal Cases: ['art 4', 'art 4', 'Application No. 200680009222', 'Application No. 200680009822', 'Application No. 200680089894', 'Application No. 06734659', 'Application No. 06720547', 'Application No. 06734695', 'Application No. 06788725', 'Application No. 06734695', 'Application No. 067720547', 'Application No. 095128233']

Patent US7747837 - Method and system for accessing non-volatile storage devices - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA mass storage memory system is provided. The memory system includes, re-programmable non-volatile memory cells arranged in a plurality of blocks of memory cells; and a controller that is adapted to receive data via a first interface, and/or a second interface, and data received via the first interface...http://www.google.com/patents/US7747837?utm_source=gb-gplus-sharePatent US7747837 - Method and system for accessing non-volatile storage devicesAdvanced Patent SearchPublication numberUS7747837 B2Publication typeGrantApplication numberUS 11/313,567Publication dateJun 29, 2010Filing dateDec 21, 2005Priority dateDec 21, 2005Fee statusPaidAlso published asUS8209516, US20070143532, US20100223308Publication number11313567, 313567, US 7747837 B2, US 7747837B2, US-B2-7747837, US7747837 B2, US7747837B2InventorsSergey A. Gorobets, Alan W. SinclairOriginal AssigneeSandisk CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (103), Non-Patent Citations (103), Referenced by (7), Classifications (9), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetMethod and system for accessing non-volatile storage devicesUS 7747837 B2Abstract A mass storage memory system is provided. The memory system includes, re-programmable non-volatile memory cells arranged in a plurality of blocks of memory cells; and a controller that is adapted to receive data via a first interface, and/or a second interface, and data received via the first interface and the second interface is accessible via the first interface and the second interface even if a file name for the data is not provided by a host system or before a write operation is complete. The first interface is a file based interface and the second interface is a logical interface.
a controller that receives files of data individually via a first host-system-accessible interface of the mass storage memory system, where the files are identified by unique identifiers, wherein the received file data is stored in one or more of the blocks of memory cells and indexed based on the unique identifiers; wherein the controller assigns a plurality of logical block addresses to the received file data and updates directory and file allocation table (�FAT�) entries that are used by a host and that are stored in the one or more of the blocks of memory cells such that the file data received via the first host-system-accessible interface is accessible via a second host-system-accessible interface of the mass storage memory system;
13. The memory system of claim 12, wherein the controller assigns the plurality of logical block addresses to the received file data and updates directory and file allocation table (�FAT�) entries that are stored in blocks of memory cells such that the file data received via the first host-system-accessible interface is accessible via the second host-system-accessible interface.
a controller that receives files of data individually via a first host-system-accessible interface of the mass storage memory system, identified by unique identifiers, wherein the received file data is stored in one or more memory blocks and the controller assigns a plurality of logical block addresses to the received file data and updates directory and file allocation table (�FAT�) entries that are used by a host and that are stored in the blocks of memory cells, wherein the FAT update and logical block address assignment is performed in real time, and the file data received via the first host-system-accessible interface is accessible via second host-system-accessible interface of the mass storage memory system;
Ser. No. 11/314,842, filed on even date herewith, entitled �Dual Mode Access for Non-Volatile Storage Devices�;
Ser. No. 11/313,633, filed on even data herewith, entitled �Method and System for Accessing Non-Volatile Storage Devices�;
(the foregoing hereinafter collectively referenced as the �Direct Data File Storage Applications�).
FIELD OF THE INVENTION The present invention relates generally to the operation of re-programmable non-volatile memory systems such as semiconductor flash memory, and more particularly, to accessing the flash memory device via plural interfaces.
SUMMARY OF THE INVENTION In one aspect of the present invention, a mass storage memory system is provided. The memory system includes, re-programmable non-volatile memory cells arranged in a plurality of blocks of memory cells; and a controller that is adapted to receive data via a first interface, and/or a second interface, and data received via the first interface and the second interface is accessible via the first interface and the second interface even if a file name for the data is not provided by a host system or before a write operation is complete. The first interface is a file based interface and the second interface is a logical interface.
In one aspect of the present invention, a mass storage memory system is provided. The memory system includes, re-programmable non-volatile memory cells arranged in a plurality of blocks of memory cells; and a controller that is adapted to receive files of data individually via a first interface, identified by unique identifiers and received file data is stored in one or more memory blocks and indexed based on the unique identifiers; wherein the controller assigns a plurality of logical block addresses to the received file data and updates file allocation table (�FAT�) entries that are stored in blocks of memory cells such that file data received via the first interface is accessible via a second interface. The first interface is a file based interface and the second interface is a logical interface.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS To facilitate an understanding of the preferred embodiment, the general architecture and operation of a host system/flash device will be described. The specific architecture and operation of the preferred embodiment will then be described with reference to the general architecture.
The file pathname syntax may conform to the standard used by the DOS file system. The pathname describes a hierarchy of directories and a file within the lowest level of directory. Path segments may be delimited by �\�. A path prefixed by �\� is relative to the root directory. A path not prefixed by �\� is relative to the current directory. A segment of � . . . � indicates the parent directory of the current directory.
When data is written via file interface 300 (shown as (A)), it is accessible via logical interface 302 (shown as (D)) after a �convert to logical� operation, as described below. Also, DOS and FAT information relating to data written via file interface 300 (shown as (A)) is accessible after the convert to logical operation.
When the host writes a new file before FAT/directory update, file system 904 allocates LBAs and generates logical commands (905) to write the file data (shown as 1006 and 1008 (LF0 . . . LFx). File storage system 105 then organizes the logical fragments into internal files. The internal files are shown as file 0, file 1 and so forth (1010). A dual file ID table 1012 (same as FDIT 908) is maintained. The example in FIG. 10B shows the StartLBA_Length (100�200) and the LBA ID (100, 200) as the file identifiers.
File storage system 105 then updates FAT/directory files and merges all the internal files and associates them to the host file (�A�)(shown as 1018).
In order to update an existing host file (for example, host file �A�), host file system 904 identifies the LBAs for the fragment (shown as 1022) and generates the logical commands (shown as 1024). In this example, the LBA is 400, 100 for the update process.
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