摘要:
In a nonvolatile memory device of the present application, when data of each write unit is read from a nonvolatile memory, an all-clear detector detects whether the read data is already cleared, and a control portion judges whether a flag is already written into a written flag area of the data that has been descrambled by a descrambler and then corrected by an error detection and correction portion. Using a scramble pattern that is generated by a scramble pattern generator and corresponds to the written flag area, a predetermined bit pattern is scrambled to a state that differs from the cleared state.
摘要:
A nonvolatile storage device includes a nonvolatile memory for storing data such as a flash memory, and a controller for controlling writing or reading of data to or from the nonvolatile memory. The nonvolatile memory stores control information (control program, control parameter) specifying a method of controlling writing or reading of data to or from the nonvolatile memory. The controller determines a type of the nonvolatile memory, and acquires the control information from the nonvolatile memory according to an acquisition procedure corresponding to the type of the nonvolatile memory, and stores (loads) the control information.
摘要:
Power consumption required for making a nonvolatile storage device having a radio communication function operate as a file server for a radio host device is great for a host device which supplies the power. The present invention enables a user to operate a host device to which the nonvolatile storage device having the radio communication function is attached so as to activate and inactivate the radio communication function of the nonvolatile storage device. This reduces unnecessary power consumption by the radio communication function.
摘要:
To provide an image pickup apparatus with excellent optical characteristics as well as high reliability and a method of manufacturing the same, capable of efficiently manufacturing the image pickup apparatus in large quantities. The image pickup apparatus of the present invention includes a support board 10, an image pickup device 20 mounted on the support board 10, and a lens component 30 provided on the light receiving region of the image pickup device 20, wherein the lens component 30 has a protrusion part 33 provided around the lens part 31, and the height of the protrusion part 33 from the surface of image pickup device 20 is greater than that of the top 31A of lens part 31 from the surface of the image pickup device 20.
摘要:
A nonvolatile storage device can read and write data by receiving a logical address from a host. The nonvolatile storage device includes: a nonvolatile memory writing and reading data based on a physical address; a logical/physical conversion table storing information on correspondence between the logical address and the physical address for each of a plurality of data management units; a duplication table storing information on correspondence between the logical address and the physical address of data arranged over a plurality of areas in a duplicate (redundant) manner in the nonvolatile memory and having a size smaller than a size of a data management unit; and a controller controlling an operation of the nonvolatile storage device. The controller permits duplicate (redundant) writing of data having a same logical address as the data (which has been written in one data management unit in another data management unit), and the controller performs a plurality of write modes for the duplicate (redundant) writing, and selectively switches between the write modes according to situation of a logical address change designated by the host.
摘要:
In a controller (memory controller) (2) that performs drive control of first and second flash memories (nonvolatile memories) (3a, 3b) in which multilevel memory cells are used in physical blocks, 64 page groups each including physical pages (9) provided in these physical blocks (8) are defined with respect to the plurality of physical blocks (8), and the physical pages (9) of the physical blocks (8) are grouped so that the boundaries of the page groups are defined behind the physical page (9) as the n-th page.
摘要:
A method of resin sealing an electronic part, includes the steps of: providing a board where one or more of the electronic parts are mounted in an upper mold; melting a resin material received in a cavity forming part of a lower mold; and dipping the electronic part held by the upper mold into the molten resin so that the resin sealing is achieved. The resin material is received in the cavity forming part of the lower mold after the resin material is pressurized and dispersed in a sealing resin supply apparatus.
摘要:
A nonvolatile memory device has a file system manager and manages the file system of a file to be recorded. The nonvolatile memory device measures time by obtaining time information from outside in each writing file data or based on time information preliminarily obtained. At the time of writing file data, management information of the file system is configured based on the time information at the time. Thus, the time information can be stored in a file entry table, and the time information can be used as file management information. The nonvolatile memory system with high user's convenience can be provided.
摘要:
A nonvolatile memory device (101) includes a plurality of physical blocks, each of which is provide with a nonvolatile memory (103), a logic/physical address conversion table, a temporary block and a temporary table. The nonvolatile memory (103) includes a plurality of pages which are predetermined writing units, respectively. The logical-physical address conversion table (106) stores correspondence information between logic addresses and physical addresses of data to be stored in the physical blocks. The temporary block is a physical block to store data that are smaller in size than those of the page. The temporary table (107) stores correspondence information between logic addresses and physical addresses with respect to data to be stored in the temporary block.
摘要:
It is possible to eliminate the defect that a long time is required for writing into a semiconductor memory card by resulting from the fact, with enlargement of its capacity, that the external data management size is different from the internal data management size in the semiconductor memory card. A partial physical block corresponding to the size managed externally is used regardless of the size of the physical block in a non-volatile memory device. Data are written in the partial physical block unit and an erase block is assured in the physical block unit, thereby enabling the write rate to be increased.