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Circuit pack system with semi-or fully-automatic upgrade capability

  • US 6,301,709 B1
  • Filed: 11/30/1998
  • Issued: 10/09/2001
  • Est. Priority Date: 11/30/1998
  • Status: Expired due to Term
First Claim
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1. A method for upgrading the contents of a circuit pack containing a memory storage device which stores data within a system comprising two circuit packs containing memory storage devices and a means for communication between said two circuit packs, comprising the steps of:

  • a. designating a first of said two circuit packs to act as a slave circuit pack;

    b. designating the second of said two circuit packs to act as a master circuit pack;

    c. sending an activation signal only to said first of said two circuit packs whereby, upon receipt by said first circuit pack of said signal, said first circuit pack is caused to act as said slave circuit pack and requests from said second circuit pack, which acts as said master circuit pack, master circuit pack version information stored in a version information storage area within a memory storage device of said master circuit pack to be transferred from said master circuit pack to said slave circuit pack; and

    d. causing said slave circuit pack to determine, based upon a calculation using said master circuit pack version information and said slave circuit pack version information stored in a version information memory storage area within a memory storage device of said slave circuit pack, whether said slave circuit pack contains within a memory storage device stored information which should be replaced with stored information that said master circuit pack contains within a memory storage device; and

    if said slave circuit pack does contain stored information which should be replaced, causing said system to perform steps to effectuate such a replacement.

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