299 results about "File allocation table" patented technology

A flash drive has increased endurance and longevity by reducing writes to flash. An Endurance Translation Layer (ETL) is created in a DRAM buffer and provides temporary storage to reduce flash wear. A Smart Storage Switch (SSS) controller assigns data-type bits when categorizing host accesses as paging files used by memory management, temporary files, File Allocation Table (FAT) and File Descriptor Block (FDB) entries, and user data files, using address ranges and file extensions read from FAT. Paging files and temporary files are never written to flash. Partial-page data is packed and sector mapped by sub-sector mapping tables that are pointed to by a unified mapping table that stores the data-type bits and pointers to data or tables in DRAM. Partial sectors are packed together to reduce DRAM usage and flash wear. A spare/swap area in DRAM reduces flash wear. Reference voltages are adjusted when error correction fails.

A flash drive has increased endurance and longevity by reducing writes to flash. An Endurance Translation Layer (ETL) is created in a DRAM buffer and provides temporary storage to reduce flash wear. A Smart Storage Switch (SSS) controller assigns data-type bits when categorizing host accesses as paging files used by memory management, temporary files, File Allocation Table (FAT) and File Descriptor Block (FDB) entries, and user data files, using address ranges and file extensions read from FAT. Paging files and temporary files are never written to flash. Partial-page data is packed and sector mapped by sub-sector mapping tables that are pointed to by a unified mapping table that stores the data-type bits and pointers to data or tables in DRAM. Partial sectors are packed together to reduce DRAM usage and flash wear. A spare/swap area in DRAM reduces flash wear. Reference voltages are adjusted when error correction fails.

A memory system comprises a flash memory and a controller comprising a control logic circuit and a working memory storing a flash translation layer. The memory system performs a merge operation by selectively copying a page from a first block of the flash memory to a second block of the flash memory. Where the page is valid and marked as allocated according to a file allocation table stored in the flash memory, the page is copied to the second block. However, where the page is valid and marked as deleted in the file allocation table, the page is not copied to the second block.

A method for efficiently controlling read/write of a flash memory is proposed, wherein two address mapping tables and an empty block FIFO mechanism are built. A zone address mapping table matched with its empty block FIFO data is used for the logical address of the file allocation table (FAT). When a host end performs read/write to a flash memory, no matter to which zone the zone address mapping table corresponds, it is not necessary to rebuild the FAT address mapping table. Moreover, a cache address mapping table and its empty block FIFO data can be added. When the logical address is not in the zone address mapping table and the FAT address mapping table, a smaller cache address mapping table is first built to increase the system speed, let control of the flash memory be more efficient, and distribute the utility rate of each block.

A method of storing files in a data storage device includes dividing a storage medium of the data storage device into identically sized storage units having a predetermined size, and indicating a status of each storage unit and relating chains of storage units storing a same file in a file allocation table on the storage medium; grouping the storage units into a plurality of groups having a predetermined number of adjacent storage units; assigning a file size classification when creating a file to be stored on the storage medium, the file size classification corresponding to an estimated amount of data in the file to be stored on the storage medium; and allocating at least one of the groups of adjacent storage units for storing the file if the file size classification is greater than a predetermined value.

A memory system includes a nonvolatile semiconductor memory and a controller which controls the semiconductor memory, the memory system being inserted into the host device. The host device further includes a file management system which allocates a cluster defined in a FAT file system to write data and manages the data allocated to the cluster by using management data including a file allocation table defined in the FAT file system and a directory entry. The directory entry includes a root directory entry serving as entry information of a root directory of an uppermost layer and a sub-directory entry serving as entry information of a sub-directory belonging to the root directory. The file system allocates the plurality of clusters in a predetermined range in which addresses are serial to the management data.

In a nonvolatile memory system, a host allocates clusters and records allocation information in a File Allocation Table that is stored in the nonvolatile memory. A controller separately allocates certain data and records allocation in a record in a volatile memory. File Allocation Table information provided to the host is modified according to the record in the volatile memory.

In a nonvolatile memory system, a host allocates clusters and records allocation information in a File Allocation Table that is stored in the nonvolatile memory. A controller separately allocates certain data and records allocation in a record in a volatile memory. File Allocation Table information provided to the host is modified according to the record in the volatile memory.

A multimedia access device, a multimedia playing system comprising the multimedia access device, and a multimedia data playing method are provided. The multimedia playing system comprises a portal web server, an interface, a multimedia access device, and a multimedia playing apparatus. The portal web server provides a file allocation table (FAT) comprising at least one file folder, each having at least one file. Each file is adapted to contain and correspond to at least one Internet data stream. The multimedia access device connects to the portal web server via the interface, selects one file from the FAT according to a selection signal, and converts the Internet data stream corresponding to this file into a USB data stream after receiving the Internet data stream via the interface.

Copy protection is provided at a mass storage device provided in or connected to a decoder for receiving digital transmissions of audio and video program material by virtual scrambling of blocks of data. Non-sequential storage locations for blocks of data are defined in accordance with a key and the file allocation table is encrypted and stored. Thus blocks of data remain intact and need not be decrypted upon playback, reducing processing time, while the program is effectively protected from reassembly without decryption of the file allocation table. The key(s) may be maintained internally within the decoder and need not be shared, thus avoiding a need for user identification and/or authentication. Software for encryption, including keys may be downloaded to the decoder through the same transmission link used for transmission of data files that may be encrypted in response to control signals or flags transmitted with data files to be protected.

This invention discloses one data transparent protection safety write system and method, which comprises hardware platform, virtual monitor and at least one operation system, wherein, the platform comprises memory device composed of data preservation area to store each data protection point MBR and file align list and status list; the virtual monitor comprises data protection module to set protection points and to store the MBR and list and point status into the preservation area for change operation on the protection point; capture operation system and the program in it visit memory device I/O operation order and directing the orders into accurate position on the memory device.

A method and system for storing files in a computer readable format using a file allocation table wherein a storage device is formatted with a single file allocation table when accessed by a system which includes means for reconstituting the file allocation table in the event of a failure. Also provided is a method for determining how many file allocation tables to write to a storage device based on a number of characteristics of the storage device such as type, data structure previously provided on the device etc, and/or on user input.

A system for protecting content includes a terminal capable of receiving content and storing the content in memory. The system also includes a first network entity capable of adding padding data to the received content, where the content and padding data form aggregate content having a size greater than a size of the content. Alternatively, the first network entity can modify a file allocation table entry of content stored by the terminal to thereby increase a perceived size of the content. A second network entity of the system is capable of accessing the aggregate content, and thereafter extracting the received content from the aggregate content upon request for the received content. Alternatively, the second network entity can extract the file allocation table entry of the received content from the modified file allocation table entry, and thereafter assemble the received content from the file allocation table entry of the received content.

Techniques for managing access to a file allocation table in an external storage device are disclosed. According to one aspect of the techniques, an accelerated apparatus, as an interface, is provided between an external storage and a device (or a host processor thereof). The accelerated apparatus comprises a center controlling unit, a FAT storage sector calculating unit, a FAT storage sector accessing unit, a buffer and a result storing unit and configured to manage the access to the FAT so that the host process is freed up to perform other tasks.

A memory storage device, a memory controller thereof, and a method for automatically creating a fill-file thereof are provided. In the present method, a plurality of logical addresses is configured and grouped into a plurality of logical blocks to be mapped to physical blocks of a memory chip in the memory storage device. When a host system is powered on, whether the logical addresses have been formatted into a partition is determined. If the logical addresses have been formatted into a partition, whether a fill-file of a predetermined file capacity exists is determined. If the fill-file does not exist, data related to the fill-file is respectively filled into a file allocation table (FAT) and a root directory of the formatted partition when the host system reads the FAT and the root directory, so as to automatically create the fill-file.

The invention discloses a method and apparatus of an assistant processor speed file operation, which comprises main processor and non-volatile storage with file allocation form area, it also comprises an assistant processor which is connected with the main processor by wire and the storage controller. When the assistant processor receives the order and the parameter of the file allocation form, it carries out the operation of the file allocation form area and gives the indicting signal of the operation and stores the operation result into the assigned stored location.