首页>
外国专利>
DATA MANAGEMENT AND CONTROL SYSTEM IN SEMICONDUCTOR FLASH MEMORY AND SEMICONDUCTOR FLASH MEMORY ACCOMMODATION APPARATUS, MONITOR CAMERA APPARATUS, AND DATA MANAGEMENT AND CONTROL METHOD IN SEMICONDUCTOR FLASH MEMORY
DATA MANAGEMENT AND CONTROL SYSTEM IN SEMICONDUCTOR FLASH MEMORY AND SEMICONDUCTOR FLASH MEMORY ACCOMMODATION APPARATUS, MONITOR CAMERA APPARATUS, AND DATA MANAGEMENT AND CONTROL METHOD IN SEMICONDUCTOR FLASH MEMORY
A system and a method for managing/controlling data in a semiconductor flash memory, a flash memory receiving device, and a monitoring camera device are provided to promote a long lifetime by normalizing rewriting of the flash memory, and easily realize real-time data write/read by solving non-uniformity related to synchronization time. A flash memory(56) includes a data storage area(61) storing file data defined by a file system, and a space bitmap(57) representing a use state of the data storage area and comprising a plurality of partial space bitmaps(58-60) of a block unit. A system memory(47) stores information for synchronization with the space bitmap to refer to or modify the space bitmap, and temporarily stores the file data. A data manager(42) includes a data arrangement manager matching a file directory group classified by corresponding to the number of partial space bitmaps with a partial data storage area and providing a mapping rule forming a write-prohibited partial data storage area over one file directory group, and manages a UDF(Universal Disk Format) file system(43) and the space bitmap. A data controller(53) controls a data flow between the system memory and the flash memory.
展开▼