Patent
1992-10-03
1995-07-25
Robertson, David L.
G06F 1310
Patent
active
054370205
ABSTRACT:
A method of detecting the loss of a sector of data stored in a solid state memory disk is described. Detection is enabled by the creation of a header for each sector number during formatting. Each header includes a logical sector number equal to a sector number. Location and loss of a sector of data associated with a particular sector number is aided by a sector header translation table. The sector header translation table stores an offset, or pointer, for each sector number that points to its associated header. The method by which the sector header translation table is generated aids in the detection of lost sectors of data. Upon power-up, each offset in the sector header translation table is initialized to an initial, invalid value. Afterward, the nonvolatile semiconductor memory is scanned and the sector header translation table is modified so that for each sector number it points to the header including a logical sector number equal to the sector number. As a result, retrieving an invalid offset from the sector header translation table indicates that the sector of data associated with the sector number is lost.
Circuitry for detecting the loss of sector data stored in a solid state memory disk is also described.
Garner Richard P.
Hasbun Robert N.
Wells Steven
Intel Corporation
Robertson David L.
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