Patent ID: 6134628
Filing Date: 2000-10-17
Classification: G06F,G11C

Abstract:
A method for rewriting a nonvolatile rewritable memory, comprising the steps of:identifying an application program to be stored in said nonvolatile rewritable memory;writing an indicator value to a first segment of said nonvolatile memory rewritable memory, which comprises a flash memory, said indicator value indicating that data contained in an application portion of said nonvolatile memory contains invalid data;transferring an old application program from said application portion to an auxiliary memory;erasing said application portion of the second segment of said nonvolatile rewritable memory;transferring the application program to the second segment of said nonvolatile rewritable memory; anddetermining whether the application program was completely written to the nonvolatile rewritable memory; andchanging the indicator value in the nonvolatile rewritable memory to another value if in the determining step it is determined the application program is completely written to nonvolatile rewritable memory.