STORAGE SYSTEM FOR IMPROVING EFFICIENCY IN ACCESSING FLASH MEMORY AND METHOD FOR THE SAME
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United States of America Patent
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Issued Date -
May 21, 2009
app pub date -
Sep 16, 2008
filing date -
Nov 15, 2007
priority date (Note) -
Abandoned
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Abstract
A storage system for improving efficiency in accessing flash memory and method for the same are disclosed. The present invention provides a cache unit for temporarily storing data prior to writing in the flash memory or reading from the flash memory. In reading process, after data stored in a flash memory is accessed by a host, the cache unit holds the data. Upon subsequent read requests to read the same data, the data is cached accordingly, thereby shortening a preparation time for reading the data from the flash memory. In writing process, a host requests write a series of requests to write data into the flash memory, the data is gathered and is stored in the cache unit until the cache unit is full. A cluster of data in the cache unit is accordingly written into the flash memory, so that a preparation time for writing the data into the flash memory is also shortened.
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