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Bit steering apparatus and method for correcting errors in stored data, storing the address of the corrected data and using the address to maintain a correct data condition

  • US 4,608,687 A
  • Filed: 09/13/1983
  • Issued: 08/26/1986
  • Est. Priority Date: 09/13/1983
  • Status: Expired due to Fees
First Claim
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1. A system for correcting errors in stored data and for maintaining the correct condition of said data including a memory unit means responsive to a memory unit means read or write request signal for storing data and corrected data, said data being stored in a plurality of memory chips, said corrected data being stored in a plurality of spare memory chips, and error detection and correction means connected to the memory unit means for detecting the existence of errors in said data stored in said plurality of memory chips and for correcting the erroneous data stored in said memory chips, comprising:

  • error identity recording means connected to and physically separate from said memory unit means, connected to said error detection and correction means and responsive to said memory unit means read or write request signal energizing said memory unit means for storing a plurality of addresses therein indicative of a corresponding plurality of locations within said memory unit means wherein said erroneous data is stored.

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