摘要:
A hybrid storage device comprises both solid-state disk (SDD) and at least one hard disk drive (HDD). The hybrid storage device has at least two operational modes: concatenation and safe. According to one aspect, the total capacity of hybrid storage device is the sum of SSD and at least one HDD in a concatenation or big mode, while the total capacity is the capacity of the HDD in a safe mode. In one embodiment, HDD is configured for storing a copy of the SSD's contents in a reserved area. In another, SSD comprises more than one identical flash memory devices controlled by a RAID controller.
摘要:
A hybrid storage device comprises both solid-state disk (SDD) and at least one hard disk drive (HDD). The hybrid storage device has at least two operational modes: concatenation and safe. According to one aspect, the total capacity of hybrid storage device is the sum of SSD and at least one HDD in a concatenation or big mode, while the total capacity is the capacity of the HDD in a safe mode.
摘要:
Methods and systems for storing and accessing data in UAS based flash memory device are disclosed. UAS based flash memory device comprises a controller and a plurality of non-volatile memories (e.g., flash memory) it controls. Controller is configured for connecting to a UAS host via a physical layer (e.g., plug and wire based on USB 3.0) and for conducting data transfer operations via two sets of logical pipes. Controller further comprises a random-access-memory (RAM) buffer configured for enabling parallel and duplex data transfer operations through the sets of logical pipes. In addition, a Smart Storage Switch configured for connecting multiple non-volatile memory devices is included in the controller. Finally, a security module/engine/unit is provided for data security via user authentication data encryption/decryption of the device. Furthermore, the flash memory device includes an optical transceiver configured for optical connection to a host also configured with an optical transceiver.
摘要:
Methods and systems for storing and accessing data in UAS based flash memory device are disclosed. UAS based flash memory device comprises a controller and a plurality of non-volatile memories (e.g., flash memory) it controls. Controller is configured for connecting to a UAS host via a physical layer (e.g., plug and wire based on USB 3.0) and for conducting data transfer operations via two sets of logical pipes. Controller further comprises a random-access-memory (RAM) buffer configured for enabling parallel and duplex data transfer operations through the sets of logical pipes. In addition, a Smart Storage Switch configured for connecting multiple non-volatile memory devices is included in the controller. Finally, a security module/engine/unit is provided for data security via user authentication data encryption/decryption of the device. Furthermore, the flash memory device includes an optical transceiver configured for optical connection to a host also configured with an optical transceiver.
摘要:
One embodiment of the present includes a electronic data storage card having a Reed Solomon (RS) decoder having a syndrome calculator block responsive to a page of information, the page being organized into a plurality of data sections and the overhead being organized into a plurality of overhead sections. The syndrome calculator generates a syndrome for each of the data sections. The decoder further includes a root finder block responsive to the calculated syndrome and for generating at least two roots, a polynomial calculator block responsive to the at least two roots and operative to generate at least one error address, identifying a location in the data wherein the error lies, and an error symbol values calculator block coupled to the root finder and the polynomial calculator block and for generating a second error address, identifying a second location in the data wherein the error(s) lie.
摘要:
An electronic data flash card is accessible by a host computer, and includes a processing unit connected to a flash memory device that stores a data file, and an input-output interface circuit activated so as to establish a communication with the host computer. In an embodiment, the electronic data flash card uses a USB input/output interface circuit for communication with the host computer. A flash memory controller includes an index for converting logical addresses sent by the host computer into physical addresses associated with sectors of the flash memory device. The index is controlled by arbitration logic referencing to values from various look up tables and valid data stored in the flash memory device. The flash memory controller further includes a first-in-first-out unit (FIFO) for recycling obsolete sectors of the flash memory device in the background process so that they are available for reprogramming.
摘要:
An electronic data flash card includes a processor and at least one flash memory device. The flash memory is partitioned such that it includes a first partition that is formatted using a file system that supports an Autorun function (e.g., CD-ROM file system (CDFS) format, fixed-disk format or Universal Disk Format (UDF)), and a disk partition that is formatted using a typical controller-based flash device file system (e.g., 16-bit File Allocation Table (FAT16) file system, 32-bit FAT (FAT32) file system, or New Technology File System (NTFS)). The electronic data flash card is produced such that Autorun-enabled application automatically executes a predetermined application or action when the electronic data flash card is installed in a host system. In one embodiment, the Autorun application includes an advertisement displayed on the host system prior to allowing access to data stored in the disk partition.
摘要:
A Bose, Ray-Chaudhuri, Hocquenghem (BCH) decoder is employed in non-volatile memory applications for determining the number of errors and locating the errors in a page of information. The decoder includes a syndrome calculator responsive to a sector of information. The sector includes data and overhead, with the data being organized into data sections and the overhead being organized into overhead sections. The syndrome calculator generates a syndrome for each of the data sections. A root finder is coupled to receive the calculated syndrome and to generate at least two roots. A polynomial calculator responds to the two roots and generates at least two error addresses, each identifying a location in the data wherein the error lies.
摘要:
A portable media player receives encrypted audio files and an encrypted content key from a central license server on the Internet. The media player supports digital rights management (DRM) by storing the encrypted audio file in its flash memory and disabling copying or playing of the audio file after a copy limit has been reached. The copy limit is a rule that is combined with the content key in a transfer key that can be encrypted together by the license server. The license server can detect cloning of the media player by reading a unique player ID from the player and detecting when too many accounts use the same unique player ID. The content key can be generated from polar coordinates of the unique player ID, player manufacturer, and song genre. A fingerprint sensor on the player can scan and compare the user's fingerprints to further detect cloning.
摘要:
A Multi-Media Card/Secure Digital (MMC/SD) single-chip flash device contains a MMC/SD flash microcontroller and flash mass storage blocks containing flash memory arrays that are block-addressable rather than randomly-addressable. MMC/SD transactions from a host MMC/SD bus are read by a bus transceiver on the MMC/SD flash microcontroller. Various routines that execute on a CPU in the MMC/SD flash microcontroller are activated in response to commands in the MMC/SD transactions. A flash-memory controller in the MMC/SD flash microcontroller transfers data from the bus transceiver to the flash mass storage blocks for storage. Rather than boot from an internal ROM coupled to the CPU, a boot loader is transferred by DMA from the first page of the flash mass storage block to an internal RAM. The flash memory is automatically read from the first page at power-on. The CPU then executes the boot loader from the internal RAM to load the control program.