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Electronic price label having two dimensional bar code reader

  • US 5,793,029 A
  • Filed: 07/02/1997
  • Issued: 08/11/1998
  • Est. Priority Date: 09/21/1995
  • Status: Expired due to Term
First Claim
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1. An electronic price label system comprising:

  • a plurality of electronic price labels, at least a portion of said plurality electronic price labels includinga display;

    a two-dimensional bar code reader;

    an overlay having front and rear sides, wherein the rear side has a two-dimensional bar code label situated adjacent the two-dimensional bar code reader, wherein the two-dimensional bar code label includes first information identifying an item associated with the electronic price label and second information including first commands for controlling the display; and

    control circuitry couples to the display and the two-dimensional bar code reader including a switch for applying power to the two-dimensional bar code reader to cause it to read the two-dimensional bar code label, wherein the control circuitry executes the first commands following executing of a second command controlling the switch; and

    a computer which controls price information displayed by the electronic price labels and which sends a message to selected ones of the electronic price labels containing the second command so that the two-dimensional bar code readers of the selected ones of electronic price labels are selectively activated.

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