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Validation of RAM-resident software programs

  • US 5,357,527 A
  • Filed: 12/31/1992
  • Issued: 10/18/1994
  • Est. Priority Date: 12/31/1992
  • Status: Expired due to Fees
First Claim
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1. A method for transmitting and verifying the accuracy of a software program transmitted to a recipient thereof, the method comprising the steps of:

  • receiving and storing a software program, expressed as an ordered set of J bits, that is to be transmitted;

    expressing a selected first forward error correction, error coding, detection and correction (ECDC) procedure as an ordered set of L1 bits plus K1 associated error check bits, and applying this first ECDC procedure and associated error check bits to the set of J bits representing the software program;

    expressing a selected second ECDC procedure as an ordered set of L2 bits plus K2 associated error check bits, and applying this second ECDC procedure and associated error check bits to the set of L1+K1 bits representing the first ECDC procedure;

    transmitting the J bits representing the software program, the L1+K1 bits representing the first ECDC procedure, and the L2+K2 bits representing the second ECDC procedure; and

    applying the second ECDC procedure to the ordered set of L1+K1 bits to verify the validity of, or correct, these L1+K1 bits; and

    applying the first ECDC procedure to the ordered set of J bits to verify the validity of, or correct, these J bits.

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