Patent ID: 6497367
Filing Date: 2002-12-24
Classification: G06Q,G07G,G09B

Abstract:
A system for providing information within a site, wherein said system comprises:a plurality of barcode labels placed at a plurality of locations within said site, wherein each barcode label within said plurality of barcode labels includes a pattern of parallel markings representing a coded value, and a portable device including: a barcode reader producing electrical signals in response to patterns of said parallel markings; an audio amplifier; an audio speaker driven by said audio amplifier; data storage including a barcode location data structure having a first field containing data representing a plurality of coded values, a second field containing data representing a plurality of values of a first location coordinate, a third field containing data representing a plurality of values of a second location coordinate, wherein each coded value in said plurality of coded values is represented by a pattern of parallel markings on a barcode label within said plurality of barcode labels, wherein each first location coordinate within said second field and each corresponding second location coordinate within said third field form a set of location coordinates representing a location of a label having a corresponding coded value in said first field; and a processor programmed to generate a most recently read coded value represented by a pattern of parallel markings read by said barcode reader in response to said electrical signals produced by said barcode reader, to find a set of location coordinates within said second and third fields of said first data structure corresponding to said coded value, to generate a pattern of synthetic speech describing a location represented by said set of location coordinates, and to cause said audio amplifier to drive said speaker in response to a generated pattern of synthetic speech.