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Method and system for error-free data transfer

  • US 6,012,159 A
  • Filed: 01/17/1997
  • Issued: 01/04/2000
  • Est. Priority Date: 01/17/1996
  • Status: Expired due to Term
First Claim
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1. A method for transferring data from a host computer to at least one subscriber computer, the data comprising a plurality of k original packets, where k is a positive integer, said method comprising the steps of:

  • encoding the k original packets to form a plurality of n encoded packets, where n>

    k;

    transmitting the encoded packets from the host computer to the at least one subscriber computer; and

    decoding any combination of k correctly-received encoded packets to reconstruct the k original packets,wherein the original packets are encoded with a k×

    n code generator matrix and the left k×

    k submatrix of the k×

    n code generator matrix is the identity matrix, so that the first k encoded packets are the original k packets, and thus if the first k encoded packets are received correctly, the decoding step is not performed, and wherein n is recomputed for each transmission based on an estimate of the percentage of packets expected to be lost during that transmission.

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