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Block file system for minimal incremental data transfer between computing devices

  • US 6,012,063 A
  • Filed: 03/04/1998
  • Issued: 01/04/2000
  • Est. Priority Date: 03/04/1998
  • Status: Expired due to Term
First Claim
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1. In a computing device, a method for a storing and transferring data, the method comprising:

  • allocating a file system comprising a plurality of blocks linked together to form a chain of blocks;

    receiving a request to store information in the file system;

    in response to the request to store information, storing variable amounts of data in the blocks such that at least one block which is not at the end of the chain retains unused storage space capable of storing additional information;

    receiving a request to modify information stored in the file system;

    in response to the request to modify information, storing new data in at least one block which is not at the end of the chain;

    receiving a request to update information stored on another device which corresponds to information stored in the file system; and

    in response to the request to update information stored on another device, transferring only those blocks which have changed since the information stored on the other device was last updated.

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