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Reader system for removable two dimensional code

  • US 5,880,453 A
  • Filed: 11/10/1997
  • Issued: 03/09/1999
  • Est. Priority Date: 01/05/1990
  • Status: Expired due to Fees
First Claim
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1. A bar code reader system, comprising:

  • a record having a substrate with an information area containing first data removably encoded on the substrate in an error-correctable machine readable format and text;

    a bar code reader for converting the first encoded data from the record into electrical signals;

    decoding means for decoding the electrical signals corresponding to the first encoded data;

    processing means for encoding second data entered through an entering means, said processing means generating transfer drive signals for controlling the transfer of said second encoded data onto said record;

    transferring means for detecting whether the record contains said first encoded data;

    erasing means, in response to said drive signals when said first encoded data is detected on the record, for subjecting the record to an erasing operation to remove said first encoded data from said record;

    bypassing means for bypassing the erasing operation performed by the erasing means when said first encoded data is not detected on the record; and

    printing means for printing said second encoded data on said record.

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