Storage device, memory managing device, memory managing method, and program
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Jun 14, 2007
app pub date -
Nov 9, 2006
filing date -
Nov 9, 2005
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A controller stores a BSI (Block Search Index) to specify an empty block of a lash memory. The controller determines whether a pointer indicating a physical block address of an empty block is stored. If no such pointer is stored, the controller generates a random number based on the BSI, determines the initial value of the pointer based on the generated random number, and stores a pointer indicating this initial value. When supplied with user data, which is the objective of writing, the controller writes the user data in the empty block indicated by the pointer. The controller updates the pointer to indicate an empty block having a physical block address which appears next to the address of that block, and updates the BSI such that it no longer indicates that the block in which the user data has been written is an empty block.
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