Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition
Reexamination Certificate
2011-07-19
2011-07-19
Patel, Kaushikkumar (Department: 2186)
Electrical computers and digital processing systems: memory
Storage accessing and control
Specific memory composition
Reexamination Certificate
active
07984231
ABSTRACT:
When moving image data or the like is recorded into an information recording medium, such as a flash memory, in real time, an influence of locations of free recording areas upon the recording speed is suppressed to ensure the real time performance of the data recording. In an access apparatus, there is provided an area management block control part that manages FAT1and FAT2, which are area management information of a nonvolatile memory, on a FAT block-by-FAT block basis, and the length of the free recording area in each FAT block is calculated. Then, area management block information, in which the free recording area length in each FAT block is recorded, is generated on a RAM. A FAT block in which the free recording area length exceeds a threshold value is assigned to the data recording, thereby suppressing the number of updates of the area management information regardless of the location of the free areas. In this way, the buffer overflow can be prevented from occurring due to a high frequency of the updating of the area management information, thereby ensuring the real time performance during the data recording.
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Inoue Shinji
Maeda Takuji
Greenblum & Bernstein P.L.C.
Panasonic Corporation
Patel Kaushikkumar
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