G - Physics – 06 – F
Patent
G - Physics
06
F
G06F 17/40 (2006.01) G06F 3/06 (2006.01) G11C 7/16 (2006.01) G06F 19/00 (2006.01)
Patent
CA 2305985
A portable electronic device includes a log-structured file system implemented in flash memory. The log-structured file system includes a write function for storing contiguous data records to the flash memory in the form of at least one data log, although the system may write data records to the flash memory using a plurality of data logs. The log-structured file system also includes a read function for retrieving data records from the one or more logs using a plurality of memory mapped pointers, which may be stored in an associated RAM index, or which may be implemented as an index stored in the flash memory. A clean-log function is also provided for eliminating inactive records from the log so that new data can be appended to the end of the log. The various functions associated with the log-structured file system are implemented as at least three software modules, a read module, a write module and a clean-log module, although other configurations are possible. The portable electronic device may include a two-way RF transceiver for sending and receiving data from the device, and may also include a plurality of application programs that are configured to interact with the log-structured file system, as well as other software modules for controlling the operation of the portable electronic device.
Borden Ladner Gervais Llp
Research In Motion Limited
LandOfFree
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