Patent ID: 6859786

Claim:
A method of displaying information about a product by an electronic price label which is driven by signals over a given bandwidth comprising: (a) dividing the information into ranges; (b) obtaining first information displayed by the electronic price label; (c) obtaining second information which is more recent than the first information; (d) determining whether the first information equals the second information; and (e) if the first information does not equal the second information, conserving the bandwidth by (e-1) obtaining a first range containing the second information; (e-2) determining whether the first information is within the first range; (e-3) if the first information is outside the first range, sending a message to the electronic price label containing the second information and a command to display the second information instead of the first information; and (e-4) if the first information is inside the first range, allowing the electronic price label to continue displaying the first information even though the first information is not so accurate as the second information.