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Data processing system with error correction

  • US 4,604,748 A
  • Filed: 01/03/1984
  • Issued: 08/05/1986
  • Est. Priority Date: 01/24/1983
  • Status: Expired due to Fees
First Claim
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1. A data processing system designed to handle a large amount of high-redundant data which allows for a low frequency of occurrence of errors, and a small amount of low-redundant data which allows for a very low frequency of occurrence of errors, which data processing system has a memory device with a large capacity for storing high-redundant and low-redundant data at an insufficiently low frequency of error, said data processing system comprising:

  • first error correction means for correcting the errors of said high- and low-redundant data, so that said high- and low-redundant data may be set within a tolerable error range when said high- and low-redundant data are read out from or written into said memory device; and

    second error correction means for double recording the low redundant data onto said memory device and for executing error correction on each item of the double-recorded low redundant data.

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