EP0749091A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

EPL price verification system and method

Assignee: NCR International Inc

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Filing: 1996-05-24

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Granted: —

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Expires: 2016-05-24

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Abstract

Abstract The invention relates to an electronic price label (EPL) price verification system which ensures that a price for an item obtained from a price look-up (PLU) file (44) by a bar code scanner (18) is equal to another price displayed by an electronic price label (EPL) (22) for the item. The EPL price verification system includes a computer system coupled to the EPL (22), which includes a terminal (24) and a storage medium (26) coupled to the terminal (24). The storage medium (26) contains an EPL data file (32), which contains EPL identification information and an EPL price verifier. The computer terminal executes a price verification program which reads the PLU file (44) to obtain the price of the item, calculates another price verifier from the price of the item in the price file, reads EPL data file (32) to obtain the one price verifier, compares the one and the other price verifiers to determine whether they are equal, and changes the displayed price to the price in the PLU file (44) if the one and the other price verifiers are different.

Inventors

👤 John Coker Goodwinn Iii
👤 Terry Lee Zimmerman

Bibliographic Details

Application Number —

Jurisdiction EP

Data Source google_patents

Last Synchronized 2026-11-09 21:51

CPC Classifications

G; G06; G06Q; G06Q30/00; G06Q30/02; G06Q20/00; G06Q20/08; G06Q20/20; G06Q20/201; G06Q20/208; G06Q30/06; G07; G07G; G07G1/00; G07G1/12; G07G1/14; G07G1/145

Claims Analysis

Total Claims: 3

Claim 1

Independent Claim 123 words

A method of ensuring that a price for an item obtained from a price file by a bar code scanner (18) is equal to another price displayed by an electronic price label (22) for the item, comprising the steps of: reading an electronic price label data file (32) to obtain identification information and a price verifier for the item; reading the price file (44) to obtain the price of the item; calculating another price verifier from the price of the item in the price file (44); comparing the one and the other price verifiers to determine whether they are equal; and changing the displayed price to the price from said price file (44) if the one and the other price verifiers are different.

Claim 2

Independent Claim 129 words

A method for ensuring that a price for an item obtained from a price look-up (PLU) file (44) by a bar code scanner (18) is equal to another price displayed by an electronic price label (22) for the item, comprising the steps of: reading an electronic price label data file (32) to obtain identification information and a price checksum value for the item; reading the price file (44) to obtain the price of the item; calculating another price checksum value from the price of the item in the price file (44); comparing the one and the other price checksum values to determine whether they are equal; and changing the displayed price to the price from said price file if the one and the other price checksum values are different.

Claim 3

Independent Claim 174 words

A system for ensuring that a price for an item obtained from a price look-up (PLU) file (44) by a bar code scanner (18) is equal to another price displayed by an electronic price label (EPL) (22) for the item, comprising: a computer system (26) coupled to the EPL (22), including a terminal (24) and a storage medium (26) coupled to the terminal (24); wherein the storage medium (26) contains an EPL data file (32), which contains EPL identification information and an EPL price verifier; wherein the computer terminal (24) is arranged to execute a price verification program which reads the PLU file (44) to obtain the price of the item, calculate another price verifier from the price of the item in the price file (44), read EPL data file (32) to obtain the one price verifier, compare the one and the other price verifiers to determine whether they are equal, and change the displayed price to the price in the PLU file (44) if the one and the other price verifiers are different.

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