Electronic Retailing Systems International

Ers Associates Limited Partnership

Electronic Retailing Systems Int'l Inc.

John Stevens

Paul Waterhouse

George Leibman

In a system for displaying prices in a retail store, improved rail arrangements permit improved accuracy in confirming the physical location of an improved display device on one such rail arrangement. A response from the device to a host, or central computer, indicates a particular position of the device on the rail arrangement.

Technique for locating electronic labels in an electronic price display

In a system for displaying prices in a retail store, improved rail arrangements are disclosed to permit improved accuracy in confirming the physical location of an improved display device on one such rail arrangement. A response from the device to a host, or central computer, indicates a particular position of the device on the rail arrangement.

Methods and apparatus are disclosed for locating electronic price tags in an electronic pricing system for use in retail environments. A host communicates with tags via a serial data bus, with identifier or switch chips geographically located within the system, each identifier or switch chip mediating communications between the host and a subset of the tags. By particular messages exchanged between tags and identifiers or switches, and by particular messages exchanged between identifiers or switches and the host, the host is able to confirm the geographic location of a particular tag.

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Streetsville, Canada

John Stevens