Patent ID: 7814367

Claim:
A computer comprising a processor and a storage medium, said storage medium comprising: a. instructions for causing the processor to time shift a subset of a plurality of data objects stored on the storage medium; b. one or more application programs for performing actions on files or data objects; c. a block layer for storing data generated from the one or more application programs; d. a file system through which changes made to a data object in the one or more application programs travel to, and are stored in, the block layer; e. one or more write-inverted stacks, whereby one or more data objects stored in the block layer have time-shifted but their corresponding one or more application programs are unaware that the one or more data objects have time shifted; f. an event journal containing a plurality of time-labeled events representing changes made to the plurality of data objects; g. an application program interface which includes one or more graphical user interface modules for selecting a subset of the data objects to time shift; said interface modules also operable to select a past temporal state and a forward temporal state of the subset of data objects; h. instructions for causing the processor to generate and apply a reverse event from the plurality of events operable to change the subset of data objects to the past temporal state; j. instructions for causing the processor to generate and apply a forward event from the plurality of events operable to change the subset of data objects to the forward temporal state; k. instructions for causing the processor to determine that one or more data objects stored in one or more block layers have been time shifted; l. instructions for notifying the corresponding file system and one or more application programs that the one or more data objects have been time shifted; and m. instructions for causing the corresponding file system and one or more application programs to synchronize with the one or more time-shifted data objects.