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FLASH MEMORY SCATTER-WRITE METHOD

  • US 20070288685A1
  • Filed: 06/09/2006
  • Published: 12/13/2007
  • Est. Priority Date: 06/09/2006
  • Status: Abandoned Application
First Claim
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1. A flash memory scatter-write method, dividing a physical block of a flash memory into a first area and a second area, and said first area being a logical area containing data, and said first area comprising a plurality of sub areas, and said second area being an area containing no data and used for alternately writing data, such that data is written into said flash memory according to a procedure comprising the steps of:

  • (A) selecting a physical block in a non-predetermined sub area from said first area;

    (B) selecting a physical block from said second area as a write-in physical block;

    (C) determining whether or not the number of times of writing data at that particular time is a multiple of a predetermined value;

    if yes, then execute Step (D), and if no, then execute Step (E);

    (D) changing to another physical block as a physical block of said second area for writing data;

    (E) writing the data contained in said selected physical block of said first area into said physical block of said second area; and

    (F) moving said selected physical block of said first area to said second area, and moving said physical block of said second area containing the written data to said first area.

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